具体实施方式

下面详细描述本发明的实施方式，所述实施方式的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施方式是示例性的，仅用于解释本发明，而不能理解为对本发明的限制。

在本发明的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”、“顺时针”、“逆时针”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个所述特征。在本发明的描述中，“多个”的含义是两个或两个以上，除非另有明确具体的限定。

在本发明的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接或可以相互通讯；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。

在本发明中，除非另有明确的规定和限定，第一特征在第二特征之“上”或之“下”可以包括第一和第二特征直接接触，也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且，第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正下方和斜下方，或仅仅表示第一特征水平高度小于第二特征。

下文的公开提供了许多不同的实施方式或例子用来实现本发明的不同结构。为了简化本发明的公开，下文中对特定例子的部件和设置进行描述。当然，它们仅仅为示例，并且目的不在于限制本发明。此外，本发明可以在不同例子中重复参考数字和/或参考字母，这种重复是为了简化和清楚的目的，其本身不指示所讨论各种实施方式和/或设置之间的关系。此外，本发明提供了的各种特定的工艺和材料的例子，但是本领域普通技术人员可以意识到其他工艺的应用和/或其他材料的使用。

参考附图1，本发明一种基于超级电容的不间断电源系统，包括供电电路和微控制单元U1（即MCU），供电电路与微控制单元U1连接且用于为微控制单元U1供电，还包括：

超级电容组C1，超级电容组C1并接到供电电路且与供电电路之间设置有开关S1；

超级电容控制电路100，超级电容控制电路100的输入端与微控制单元U1连接且输出端与开关S1连接；超级电容控制电路100用于接收微控制单元U1发送的信号以控制开关S1闭合或断开。

本实施例中，在实际应用时，供电电路为微控制单元U1供电使微控制单元U1正常工作，同时也为超级电容组C1供电使超级电容组C1充电，当供电电路出现异常（例如意外掉电、出现波动等）导致其无法正常为微控制单元U1供电时，超级电容组C1作为备用电源通过放电为微控制单元U1正常供电，由于超级电容组C1具有一定容值，作为储能单元能够存储一定电量，因此微控制单元U1能够在一段时间内维持正常工作状态，而微控制单元U1检测到供电电路掉电时，将会在超级电容组C1能量耗尽前执行预设操作（例如保存数据），当微控制单元U1执行预设操作后，再通过向超级电容控制电路100发送信号，以控制开关S1断开，从而切断超级电容组C1的供电回路，进而控制微控制单元U1的关机。有效避免因供电异常导致微控制单元U1数据丢失；进一步的，由于超级电容组C1寿命长且抗干扰能力强，使其具有足够的可靠性，因此在供电电路出现异常时能够为微控制单元U1提供稳定供电；进一步的，超级电容组C1容量大，使得微控制单元U1拥有足够的时间执行预设操作，确保不间断电源系统稳定运行；进一步的超级电容组C1允许大电流充放，进而达到充电时间短且能源转换效率高的效果。

同理，当供电电路重新为微控制单元U1供电时，微控制单元U1向超级电容控制电路100发送信号，以控制开关S1闭合，从而使超级电容组C1接入供电电路进行充电。

在某些实施例中，参考附图1，基于超级电容的不间断电源系统还包括第一升降压电路200，第一升降压电路200设置在供电电路上，第一升降压电路200的输入端与电源连接且输出端与微控制单元U1电连接；

第一升降压电路200的输出端还通过从供电电路分岔出的供电支路与超级电容组C1的输入端连接。

在实际应用时，不同的电源作为前级供电系统会有不同的输出电压，例如5V、12V、24V和48V等，本实施例通过设置第一升降压电路200调控电源输出电压，使得输出电压符合微控制单元U1和超级电容组C1正常工作的额定电压，有利于避免过低电压无法正常驱动微控制单元U1和超级电容组C1，或过高电压导致微控制单元U1和超级电容组C1烧损。

具体的，第一升降压电路200具有升压和降压两种功能，两种功能能够切换使用。例如电源输出电压为Vin，微控制单元U1的额定电压为Vout，超级电容组C1的额定电压为Vc；当Vin>Vout=Vc时，控制第一升降压电路200切换到降压，由此降低电源输出电压；同理，当Vin

在某些实施例中，参考附图1，第一升降压电路200的输出端与供电电路的分岔口之间设置有第一二极管D1；第一二极管D1用于防止电流倒灌至第一升降压电路200中，当供电电路掉电后，第一二极管D1能够避免超级电容组C1放电时电流流入电源导致电源烧毁。

在某些实施例中，参考附图1，基于超级电容的不间断电源系统还包括第二升降压电路300，第二升降压电路300设置在供电电路上且位于供电电路的分岔口与微控制单元U1之间，第二升降压电路300的输入端与第一升降压电路200的输出端电连接且输出端与微控制单元U1连接；

超级电容组C1的输出端通过开关S1与第二升降压电路300连接。

在实际应用时，不同的微控制单元U1会有不同的额定电压，例如5V、12V、24V和48V等，本实施例通过设置第二升降压电路300调控微控制单元U1的输入电压，使得输入电压符合微控制单元U1正常工作的额定电压，有利于避免低电压无法正常驱动微控制单元U1，或过高电压导致微控制单元U1烧损。

具体的，第二升降压电路300具有升压和降压两种功能，两种功能能够切换使用。结合第一升降压电路200使用时，当Vin>Vc>Vout时，控制第一升降压电路200和第二升降压电路300均切换到降压，由此将电源输出电压降低至超级电容组C1的额定电压，使得超级电容组C1正常工作，而无论是供电电路还是超级电容组C1为微控制单元U1供电，都经过第二升降压电路300再次降压至微控制单元U1的额定电压，使得微控制单元U1正常工作；同理，当Vin>Vout>Vc时，控制第一升降压电路200切换到降压且第二升降压电路300切换到升压；当Vout>Vin>Vc时，控制第一升降压电路200切换到降压且第二升降压电路300切换到升压；当Vout>Vc>Vin时，控制第一升降压电路200和第二升降压电路300均切换到升压；当Vc>Vout>Vin时，控制第一升降压电路200切换到升压且第二升降压电路300切换到降压；通过设置第二升降压电路300使得不间断电源系统能够搭配多种微控制单元U1进行使用，进一步提高不间断电源系统的适用性。

进一步的，参考附图3，以Vin>Vc>Vout为例（其它情况类似，在此不再赘述）对本实施例的不间断电源系统的工作流程进行如下说明：

Vin接入第一升降压电路200后，判断Vin>Vc，则控制第一升降压电路200切换成降压，此时第一升降压电路200输出Vc为超级电容组充电（开关S1正常情况下为闭合状态）；Vc接入第二升降压电路300后，判断Vc>Vout，则控制第二升降压电路300切换成降压，此时第二升降压电路300输出Vout为MCU供电；当MCU检测到供电电路掉电时，超级电容组开始为MCU放电，超级电容组输出Vc并通过第二升降压电路300降压为Vout，使得MCU维持正常供电并进行数据保存，待数据保存完毕后，MCU向超级电容控制电路100发送信号控制开关S1断开，超级电容组停止放电，MCU关机。

在某些实施例中，参考附图1，超级电容组C1的输出端与开关S1之间设置有第二二极管D2；第二二极管D2用于防止电流倒灌至超级电容组C1中，当供电电路掉电后，第二二极管D2能够限制超级电容组C1放电时的电流流向，确保超级电容组C1能够正常为微控制单元U1供电。

在某些实施例中，参考附图1，超级电容组C1的输入端与供电电路之间设置有第一电阻R1；第一电阻R1用于限制流入超级电容组C1的电流以使超级电容组C1在恒流状态下充电，设置第一电阻R1能够使超级电容组C1可以在恒流模式下进行充电，确保超级电容组C1充电过程稳定且安全。

在某些实施例中，超级电容组C1包括1个超级电容。

在某些实施例中，参考附图2，超级电容组C1包括多个超级电容，多个超级电容分为多个区块，每个区块包括至少1个超级电容，相邻两个区块相互并接。

在实际应用时，不同的应用场景下微控制单元U1执行预设操作所需的时间不同，同时对超级电容组C1的耐压要求也不同，因此本实施例通过多个超级电容的组合，构成不同容值和不同耐压值的超级电容组C1，以此满足实际需求。

进一步的，参考附图2，每个区块包括多个超级电容，同一区块中的多个超级电容相互串接。

例如，超级电容并接的数量越多则超级电容组C1的容值越大，超级电容组C1能够存储更多能量因此能够延长放电时长，以此满足不同微控制单元U1执行预设操作所需的时间。

又例如，超级电容串接的数量越多则超级电容组C1的工作电压越大，进而提升了超级电容组C1的耐压值，以此满足不同耐压要求。

进一步的，参考附图2，每个超级电容均并接有对应的一个第二电阻，设置第二电阻能够使每个超级电容都尽可能均衡地进行充电。

具体的，超级电容组C1包括6个超级电容，分别为第一超级电容Cx、第二超级电容Cy、第三超级电容Cz、第四超级电容Co、第五超级电容Cp和第六超级电容Cq；

其中第一超级电容Cx、第二超级电容Cy和第三超级电容Cz串接构成第一区块，且第一超级电容Cx上并接有第三电阻Rx，第二超级电容Cy上并接有第四电阻Ry，第三超级电容Cz上并接有第五电阻Rz；第四超级电容Co、第五超级电容Cp和第六超级电容Cq串接构成第二区块，且第四超级电容Co上并接有第六电阻Ro，第五超级电容Cp上并接有第七电阻Rp，第六超级电容Cq上并接有第八电阻Rq；第一区块和第二区块并接。

需要说明的是，上述第三电阻Rx、第四电阻Ry、第五电阻Rz、第六电阻Ro、第七电阻Rp和第八电阻Rq均属于上述的第二电阻。

在本说明书的描述中，参考术语“一个实施方式”、“某些实施方式”、“示意性实施方式”、“示例”、“具体示例”、或“一些示例”等的描述意指结合所述实施方式或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施方式或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施方式或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施方式或示例中以合适的方式结合。

以上所述的仅是本发明的一些实施方式。对于本领域的普通技术人员来说，在不脱离本发明创造构思的前提下，还可以做出若干变形和改进，这些都属于本发明的保护范围。

The specific embodiment

An embodiment of the present invention is described in detail below, and examples of said embodiments are shown in the drawings where the same or similar designations from beginning to end indicate the same or similar elements or elements having the same or similar functions. The embodiments described below by reference to the drawings are illustrative and are intended to explain the invention only and should not be construed as limiting the invention.

In the description of the present invention, it is necessary to understand that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" The orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implying the number of technical features indicated. Thus, the features that are defined as "first" and "second" may explicitly or implicitly include one or more of the features described. In the description of the present invention, "plurality" means two or more of them, unless otherwise expressly and specifically qualified.

In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted", "connected" and "connected" shall be understood broadly, for example, they may be fixed, detachable, or integrally connected, mechanically connected, electrically connected or can communicate with each other, they may be directly connected or indirectly connected through an intermediate medium, and they may be connected internally or interacted between two elements. For a person of ordinary skill in the art, the specific meaning of the above terms in the present invention may be understood according to the specific circumstances.

In the present invention, unless otherwise expressly specified or qualified, the first feature "above" or "below" the second feature may include direct contact between the first and second features, or the first and second features are not in direct contact but through additional feature contact between them. Moreover, the first feature is "above", "above", and "above" the second feature includes the first feature directly above and obliquely above the second feature, or simply indicates that the first feature is horizontally higher than the second feature. The first feature is "below", "below", and "below" the second feature, including the first feature directly below and diagonally below the second feature, or simply indicating that the horizontal height of the first feature is less than that of the second feature.

The following disclosure provides a number of different embodiments or examples for the different structures used to realize the invention. In order to simplify the disclosure of the present invention, the parts and settings of a particular example are described below. Of course, they are only examples and are not intended to limit the invention. In addition, the present invention may repeat reference numbers and/or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, which in itself does not indicate the relationship between the various embodiments and/or settings in question. In addition, the present invention provides examples of various specific processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and/or the use of other materials.

Referring to accompanying drawing 1, the present invention is an uninterruptible power supply system based on supercapacitors, comprising a power supply circuit and a microcontrol unit U1 (i.e., MCU), the power supply circuit is connected with the microcontrol unit U1 and is used for supplying power to the microcontrol unit U1, and further comprises:

supercapacitor group C1, supercapacitor group C1 is connected to the power supply circuit and is provided with a switch S1 between the power supply circuit and the power supply circuit;

the supercapacitor control circuit 100 is used for receiving the signal sent by the microcapacitor control unit U1 to control the switch S1 to control the switch S1 to close or disconnect.

In this embodiment, in practical application, the power supply circuit supplies power to the microcontrol unit U1 so that the microcontrol unit U1 works normally, and also supplies power to the supercapacitor group C1 to charge the supercapacitor group C1, when the power supply circuit is abnormal (such as accidental power failure, When fluctuation occurs, etc.), the supercapacitor group C1 is used as a standby power supply to supply the microcontrol unit U1 normally through discharge, because the supercapacitor group C1 has a certain capacitance value, as an energy storage unit can store a certain amount of electricity, so the microcapacitor unit U1 can maintain a normal working state for a period of time, and when the microcontrol unit U1 detects that the power supply circuit is powered off, it will perform a preset operation (such as saving data) before the energy of the supercapacitor group C1 is exhausted, and when the microcapacitor unit U1 performs the preset operation, then send a signal to the supercapacitor control circuit 100 to control the switch S1 to be disconnected, thereby cutting off the power supply circuit of the supercapacitor group C1, and then controlling the shutdown of the microcontrol unit U1. Effectively avoid the data loss of the microcontrol unit U1 due to the abnormal power supply;Furthermore, because the supercapacitor group C1 has long life and strong anti-interference ability, it has sufficient reliability, so it can provide stable power supply for the microcontrol unit U1 when the power supply circuit is abnormal; furthermore, the supercapacitor group C1 has a large capacity, so that the microcontrol unit U1 has enough time to perform the preset operation, and ensures the stable operation of the uninterruptible power supply system; furthermore, the supercapacitor group C1 allows high-current charging and discharging, so as to achieve the effect of short charging time and high energy conversion efficiency。

In the same way, when the power supply circuit supplies power to the microcontrol unit U1 again, the microcontrol unit U1 sends a signal to the supercapacitor control circuit 100 to control the switch S1 to close, so that the supercapacitor group C1 is connected to the power supply circuit for charging.

In some embodiments, with reference to accompanying drawing 1, the uninterruptible power supply system based on supercapacitor further comprises a first buck-boost circuit 200, the first buck-boost circuit 200 is arranged on the power supply circuit, the input end of the first buck-boost circuit 200 is connected with the power supply, and the output end is electrically connected with the microcontrol unit U1;

The output end of the first buck-boost circuit 200 is also connected with the input end of supercapacitor bank C1 through a power supply branch that is bifurcated from the power supply circuit.

In practical application, different power supply as a pre-power supply system will have different output voltages, such as 5V, 12V, 24V and 48V etc., the present embodiment regulates the output voltage of the power supply by setting up a first buck-boost circuit 200, so that the output voltage conforms to the rated voltage of the normal operation of the microcontrol unit U1 and the supercapacitor group C1, is conducive to avoiding that the microcontrol unit U1 and the supercapacitor group C1 cannot be driven normally by too low voltage, or the microcontrol unit U1 and the supercapacitor group C1 are burned out due to excessive voltage.

Specifically, the first step-boost circuit 200 has two functions of step-up and step-down, and the two functions can be switched to use. For example, the output voltage of the power supply is Vin, the rated voltage of the microcontrol unit U1 is Vout, and the rated voltage of the supercapacitor group C1 is Vc; when Vin>Vout=Vc, the first buck-boost circuit 200 is controlled to switch to a step-down, thereby reducing the output voltage of the power supply; in the same way, when Vin

In some embodiments, referring to accompanying drawing 1, a first diode D1 is arranged between the output end of the first buck-boost circuit 200 and the bifurcation of the power supply circuit; the first diode D1 is used for preventing the current from being backfilled into the first buck-boost circuit 200, and when the power supply circuit is powered off, the first diode D1 can avoid the current flowing into the power supply when the supercapacitor group C1 is discharged, causing the power supply to burn out.

In some embodiments, with reference to accompanying drawing 1, the uninterruptible power supply system based on supercapacitor further comprises a second buck-boost circuit 300, the second buck-boost circuit 300 is arranged on the power supply circuit and is located between the bifurcation of the power supply circuit and the microcontrol unit U1, the input end of the second buck-boost circuit 300 is electrically connected with the output end of the first buck-boost circuit 200 and the output end is connected with the microcontrol unit U1;

The output terminal of the supercapacitor bank C1 is connected with the second buck-boost circuit 300 through a switch S1.

In practical application, different microcontrol unit U1 will have different rated voltages, such as 5V, 12V, 24V and 48V etc., and the present embodiment regulates the input voltage of microcontrol unit U1 by setting up a second buck-boost circuit 300, so that the input voltage conforms to the rated voltage of microcontrol unit U1 normal operation, is conducive to avoiding low voltage can not drive microcontrol unit U1 normally, or excessive voltage causes microcontrol unit U1 to burn out.

Specifically, the second step-boost circuit 300 has two functions of step-up and step-down, and the two functions can be switched and used. When used in combination with the first buck-boost circuit 200, when Vin>Vc > When Vout, the first step-up circuit 200 and the second buck-boost circuit 300 are switched to step-down, thereby reducing the output voltage of the power supply to the rated voltage of the supercapacitor group C1, so that the supercapacitor group C1 works normally, and whether the power supply circuit or the supercapacitor group C1 supplies power to the microcontrol unit U1, the voltage is lowered to the rated voltage of the microcontrol unit U1 again through the second step-up circuit 300, so that the microcontrol unit U1 works normally>; When Vc is >, the first buck-boost circuit 200 is controlled to be switched to a step-down and the second buck-boost circuit 300 is switched to a step-down; when Vout> Vout> Vc, the first buck-boost circuit 200 is switched to a step-down and the second buck-boost circuit 300 is switched to a step-up; when Vout> Vc>Vin, the first buck-boost circuit 200 and the second buck-boost circuit 300 are both switched to a step-up; and when Vc > Vout> Vout Vin, the first buck-boost circuit 200 is controlled to switch to boost and the second buck-boost circuit 300 is switched to step-down, and the uninterruptible power supply system can be used with a variety of microcontrol units U1 by arranging the second buck-boost circuit 300, so that the applicability of the uninterruptible power supply system is further improved.

Further, with reference to accompanying drawing 3, the workflow of the uninterruptible power supply system of the present embodiment is described as follows by taking Vin>Vc>Vout as an example (other situations are similar and will not be repeated here):

After Vin is connected to the first buck-boost circuit 200, it is judged that Vin > Vc, then the first buck-boost circuit 200 is controlled to switch to a step-down, and the output Vc of the first buck-boost circuit 200 is charged by the supercapacitor group (the switch S1 is closed under normal conditions); after Vc is connected to the second buck-boost circuit 300, Vc is judged to be > Vout, then control the second buck-boost circuit 300 to switch to step-down, and the second buck-boost circuit 300 outputs Vout to supply power to MCU at this moment; when MCU detects that the power supply circuit is power-off, the supercapacitor group begins to discharge for MCU, and the supercapacitor group outputs Vc and step-down to Vout through the second buck-boost circuit 300, so that the MCU maintains normal power supply and carries out data saving, after the data is saved, the MCU sends a signal to the supercapacitor control circuit 100 to control the switch S1 to be disconnected, the supercapacitor group stops discharging, and the MCU shuts down。

In some embodiments, referring to accompanying drawing 1, a second diode D2 is arranged between the output terminal of supercapacitor group C1 and the switch S1; the second diode D2 is used for preventing current from being backfilled into supercapacitor group C1, and when the power supply circuit is power-off, the second diode D2 can limit the current flow direction when supercapacitor group C1 is discharged, and ensure that supercapacitor group C1 can normally supply power to microcontrol unit U1.

In some embodiments, referring to accompanying drawing 1, a first resistor R1 is arranged between the input terminal of supercapacitor group C1 and the power supply circuit; the first resistor R1 is used for limiting the current flowing into supercapacitor group C1 so that supercapacitor group C1 can be charged in a constant current state, and the first resistor R1 is arranged so that supercapacitor group C1 can be charged in constant current mode, so as to ensure that the charging process of supercapacitor group C1 is stable and safe.

In some embodiments, the supercapacitor group C1 comprises 1 supercapacitor.

In some embodiments, with reference to accompanying drawing 2, supercapacitor group C1 comprises a plurality of supercapacitors, the supercapacitors are divided into a plurality of blocks, each block comprises at least one supercapacitor, and two adjacent blocks are connected in parallel with each other.

In practical application, the time required for the microcontrol unit U1 to perform the preset operation is different in different application scenarios, and the withstand voltage requirements for supercapacitor group C1 are also different simultaneously, so the embodiment forms supercapacitor group C1 with different capacitance values and different withstand voltage values through the combination of a plurality of supercapacitors, so as to meet the actual demand.

Further, with reference to Figure 2, each block comprises a plurality of supercapacitors, and a plurality of supercapacitors in the same block are connected in series with each other.

For example, the larger the number of supercapacitors, the larger the capacitance of supercapacitor group C1, which can store more energy and thus extend the discharge time to meet the time required for different microcontrol unit U1 to perform preset operations.

For example, the larger the number of supercapacitors connected in series, the greater the working voltage of supercapacitor bank C1, which increases the withstand voltage value of supercapacitor bank C1 to meet different withstand voltage requirements.

Further, with reference to Figure 2, each supercapacitor is connected with a corresponding second resistor, and the second resistor can be arranged so that each supercapacitor can be charged as evenly as possible.

Specifically, the supercapacitor group C1 comprises six supercapacitors, namely the first supercapacitor Cx, the second supercapacitor Cy, the third supercapacitor Cz, the fourth supercapacitor Co, the fifth supercapacitor Cp and the sixth supercapacitor Cq;

Wherein the first supercapacitor Cx, the second supercapacitor Cy and the third supercapacitor Cz are connected in series to form the first block, and the first supercapacitor Cx is connected with a third resistor Rx, the second supercapacitor Cy is connected with a fourth resistor Ry, the third supercapacitor Cz is connected with a fifth resistor Rz; the fourth supercapacitor Co, The fifth supercapacitor Cp and the sixth supercapacitor Cq are connected in series to form the second block, and the fourth supercapacitor Co is connected with a sixth resistor Ro, the fifth supercapacitor Cp is connected with a seventh resistor Rp, and the sixth supercapacitor Cq is connected with an eighth resistor Rq, and the first block and the second block are connected in parallel.

It should be noted that the above third resistor Rx, the fourth resistor Ry, the fifth resistor Rz, the sixth resistor Ro, the seventh resistor Rp and the eighth resistor Rq all belong to the above second resistor.

In the description of this specification, references to the terms "one embodiment", "some embodiment", "schematic embodiment", "example", "specific example", or "some examples", etc., are intended to be included in at least one embodiment or example of the present invention in conjunction with the specific features, structure, materials or features described in the embodiments or examples. In this specification, indicative representations of the above terms do not necessarily refer to the same embodiments or examples. Further, the specific features, structures, materials, or features described may be combined in an appropriate manner in any one or more embodiments or examples.

The above are only some embodiments of the present invention. For a person skilled in the art, under the premise of not departing from the idea of the present invention, a number of deformations and improvements can also be made, which all belong to the scope of protection of the present invention.