A mobile energy storage integrated device, discharge method and storage medium thereof

Abstract

The present application relates to the field of new energy storage, and in particular to a mobile energy storage device, a discharge method, and a storage medium thereof. The device comprises a main body, a plurality of chambers provided on the main body, energy storage components for storing energy disposed within the chambers, a socket for plugging in and drawing power from electrical equipment disposed on the energy storage components, a track assembly for movement disposed on the lower end of the main body, a drive assembly for driving the track assembly for transmission, and a photovoltaic assembly disposed on the main body for photovoltaic power generation and transmitting the electrical energy to the energy storage components for storage. The present application facilitates power supply for disaster relief operations.

Description

Technical Field

[0001] The present application relates to the field of new energy storage, and in particular to a mobile energy storage device, a discharge method and a storage medium thereof. Background Art

[0002] Current energy storage devices are typically fixed to the ground, such as discharge piles, and are difficult to move. However, when faced with major natural disasters or emergencies like fires, they can easily lead to regional power outages. Failure to provide timely power not only impacts people's lives but also hinders emergency relief efforts, such as equipment becoming unusable due to difficulty discharging. Summary of the Invention

[0003] In order to improve the problem that energy storage and discharge devices are difficult to move, the present application provides a mobile energy storage all-in-one device, a discharge method and a storage medium thereof.

[0004] This application provides a mobile energy storage integrated device, which adopts the following technical solutions:

[0005] A mobile energy storage integrated machine includes a main body, a plurality of chambers are provided on the main body, energy storage components for storing energy are provided in the chambers, socket components are provided on the energy storage components for plugging in and drawing power from electrical equipment, a crawler assembly for movement is provided on the lower end of the main body, a drive assembly is provided on the main body for driving the crawler assembly for transmission, and a photovoltaic assembly is provided on the main body for performing photovoltaic power generation and transmitting electrical energy to the energy storage component for storage.

[0006] By adopting the above technical solution, the main body is placed on a transport vehicle and transported to the site, and then the main body is transported to a more accurate position through the drive assembly and the track assembly. The electrical equipment draws electricity from the energy storage component through the socket component, which is convenient for the use of the electrical equipment, and the photovoltaic component can store energy and supply power to the energy storage component.

[0007] Optionally, a protective groove is provided on the energy storage component, the socket component is arranged on the bottom wall of the protective groove, a protective plug-in is slidably provided in the protective groove, the protective plug-in is inserted into the socket component, and the protective plug-in is used for plugging in the plug of the electrical equipment, a pop-up elastic component is provided between the bottom wall of the protective groove and the protective plug-in for popping out the protective plug-in to the outside of the protective groove, a clamping component for clamping and limiting the protective plug-in is movably provided on the inner wall of the protective plug-in, and an acceleration detection component is provided on the main body, and the acceleration detection component is used to detect acceleration to obtain an acceleration signal and output it.

[0008] By adopting the above technical solution, when an aftershock occurs, for example, causing the main body to topple over, while the electrical device is still connected to the energy storage component, the protective plug-in will be ejected by the pop-up elastic member, thereby actively releasing the connection between the electrical device and the energy storage component, thereby reducing the probability of leakage of the electrical device or leakage of the connecting wire between the electrical device and the energy storage component, thereby affecting the energy storage component, protecting the energy storage component and the main body, and also protecting other electrical devices connected to other energy storage components on the same main body.

[0009] Optionally, the clamping member includes an electromagnet and a limit block, the limit block is used to clamp and limit the protective plug-in in the protective groove, and the electromagnet is energized to attract the limit block to move to release the clamping limit on the protective plug-in. A driving member is provided on the main body, and a sealing plate is provided on the output shaft of the driving member. The driving member is used to control the movement of the sealing plate to seal the opening of the protective groove.

[0010] By adopting the above technical solution, the protective plug-in is released from the limit by energizing the electromagnet, so that the protective plug-in can be ejected, thereby realizing the ejection of the plug of the electrical device, and then the opening surface of the protective groove is sealed by the sealing plate, thereby reducing the probability of external water contacting the socket component and causing leakage, and also reducing the probability of deformation of the socket component due to vibration, tipping and other collisions, thereby protecting the socket component.

[0011] Optionally, the energy storage component includes a battery module, the battery module includes a battery Q, the positive pole and the negative pole of the battery Q are electrically connected to the socket component, and at least a switch K1 and a switch K2 are electrically connected between the positive pole and the negative pole of the battery Q of the adjacent battery module, and the switch K1 and the switch K2 are connected in parallel to the positive pole or the negative pole of the battery Q of the adjacent battery module, and further includes a switch K3, one end of the switch K3 is connected in parallel to the switch K2 and the negative pole of the battery Q, and the other end of the switch K3 is connected in parallel to the negative pole of the battery Q of the adjacent battery module, and the individual output, parallel output or series output of the battery Q of the adjacent battery module is controlled by turning on and off the switches K1, K2 and K3.

[0012] By adopting the above technical solution, switching between individual output, series output, and parallel output of multiple batteries can be achieved, greatly improving the adaptability of energy storage components.

[0013] The present application provides a method for discharging a mobile energy storage device, which adopts the following technical solution:

[0014] A method for discharging a mobile energy storage device, comprising:

[0015] Get the charging agreement;

[0016] Determine and output a discharge signal through the charging protocol and a preset permission protocol;

[0017] Obtaining energy storage voltage;

[0018] Determine the discharge signal based on the energy storage voltage and a preset damage voltage threshold and output the discharge signal;

[0019] An emergency power supply signal is received, and the discharge signal is determined and outputted based on the emergency power supply signal.

[0020] By adopting the above technical solution, it is automatically determined whether discharge is allowed, the capacity of the battery is protected, and in an emergency, more discharge is allowed at the expense of the battery capacity.

[0021] Optional, including:

[0022] Acquire the acceleration signal and obtain timing data;

[0023] determining vibration data using the acceleration signal and the timing data;

[0024] Get discharge status data;

[0025] Determining an ejection signal to the electromagnet based on the vibration data, a preset warning threshold, and the discharge state data;

[0026] Determine a protection signal based on the vibration data, the warning threshold, and the discharge state data and output it to the driving member; receive a transport signal;

[0027] The early warning threshold is temporarily modified according to the transport signal, the preset alarm threshold, and the preset transport time data.

[0028] By adopting the above technical solution, the vibration size is judged by the acceleration signal and timing data, so that it is possible to automatically judge that a large displacement is about to occur, thereby automatically protecting the socket parts. This is convenient and fast, reduces the probability of secondary damage caused by equipment failure during emergency rescue and disaster relief, and greatly improves safety.

[0029] Optional, including:

[0030] receiving discharge mode data;

[0031] Determine a discharge mode signal based on the discharge mode data and a preset mode threshold and output the signal to the battery module to control the switch K1, the switch K2, and the switch K3;

[0032] Determine a protection circuit signal based on the vibration data and the warning threshold;

[0033] The discharge mode signal is determined and outputted according to the protection circuit signal and the mode threshold, and the protection circuit signal has a higher priority than the discharge mode data.

[0034] By adopting the above technical solution, in dangerous situations, the connection between adjacent batteries will be disconnected. For example, if multiple batteries are outputting in parallel or in series, they will be automatically cut off to make them output separately, reducing the probability of affecting other batteries when one battery is impacted and leaks, overloads, or opens a circuit, thereby improving safety and protecting other electrical equipment.

[0035] This application provides a computer-readable storage medium that uses the following technical solution:

[0036] A computer-readable storage medium stores a computer program capable of being loaded and executed by a processor for a discharging method of a mobile energy storage device.

[0037] By adopting the above technical solution, the computer program is stored in a computer-readable storage medium.

[0038] In summary, this application includes at least one of the following beneficial technical effects:

[0039] 1. Facilitate the use of electrical equipment at emergency rescue sites.

[0040] 2. Reduce the probability of leakage of electrical equipment or leakage of connecting wires between electrical equipment and energy storage devices, thereby affecting the energy storage devices, protect the energy storage devices and the main body, and also protect other electrical equipment connected to other energy storage devices on the same main body. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a schematic diagram of the overall structure of a mobile energy storage integrated machine in an embodiment of the present application.

[0042] Figure 2 It is along Figure 1 Schematic diagram of the cross section along line AA.

[0043] Figure 3 This is a circuit diagram of the battery module.

[0044] Figure 4 It is a flow chart of a discharge method of a mobile energy storage integrated machine in an embodiment of the present application.

[0045] Figure 5 It is a flowchart of step S2.

[0046] Figure 6 It is a flowchart of step S3.

[0047] Explanation of the accompanying drawings: 1. Main body; 11. Chamber; 12. Energy storage component; 13. Socket component; 14. Track assembly; 15. Drive assembly; 16. Photovoltaic assembly; 2. Protective groove; 21. Protective plug-in; 22. Pop-up elastic component; 221. Make way groove; 23. Snap-fit ​​component; 231. Snap-fit ​​groove; 24. Acceleration detection component; 3. Electromagnet; 31. Limit block; 32. Drive component; 33. Sealing plate; 4. Battery module. DETAILED DESCRIPTION

[0048] The following is combined with Figure 1-6 This application is described in further detail.

[0049] The embodiment of the present application discloses a mobile energy storage integrated machine. Figure 1 The mobile energy storage integrated machine includes a main body 1, which is provided with a plurality of chambers 11. The chambers 11 penetrate the main body 1 in a height direction perpendicular to the main body 1. Energy storage components 12 for energy storage are installed in the chambers 11. The energy storage components 12 correspond one-to-one with the chambers 11. The energy storage components 12 can be batteries or circuit module components with batteries as the core. They can also include circuit components such as switches and wires. A track assembly 14 for movement is installed on the side wall of the lower end of the main body 1. The track assembly 14 includes a track for contacting the ground and a track wheel for supporting the track and driving the track transmission. A drive assembly 15 for driving the track assembly 14 for transmission is installed on the main body 1. The drive assembly 15 can be a motor or a motor and a gear set, that is, a motor and a gear set are used to simultaneously drive all the track wheels in a track to rotate. A photovoltaic assembly 16 for generating photovoltaic power and transmitting electrical energy to the energy storage device 12 for energy storage is installed on the upper end surface of the main body 1. The photovoltaic assembly 16 includes multiple photovoltaic panels and may also include equipment for unfolding the photovoltaic panels, that is, multiple photovoltaic panels are folded together by rotating and storing, and then rotated and unfolded after arriving at the destination.

[0050] Reference Figure 2 A protective groove 2 is provided on the outer shell of the energy storage component 12, and a socket component 13 for plugging in and drawing power to an electrical device is embedded on the bottom wall of the protective groove 2 facing its own opening surface. The socket component 13 can be a two-hole socket or a three-hole socket. A protective plug-in 21 slides in the protective groove 2, and the side walls of the protective plug-in 21 slide in contact with the inner wall of the protective groove 2. A plug for plugging into the socket component 13 to achieve electrical connection is installed on the end of the protective plug-in 21 facing the socket component 13. A socket for plugging in an electrical device is provided on the end of the protective plug-in 21 facing the opening surface of the protective groove 2. The end of the protective plug-in 21 facing away from the socket component 13 can be a two-hole socket or a three-hole socket.

[0051] Reference Figure 2A spring-loaded member 22 is installed between the bottom wall of the protective recess 2 and the protective insert 21, for ejecting the protective insert 21 out of the protective recess 2. A clearance groove 221 is defined on the bottom wall of the protective recess 2, and the spring-loaded member 22 is installed within the clearance groove 221. The protective insert 21 is fitted onto the socket 13, and the spring-loaded member 22 is completely compressed within the clearance groove 221. The spring-loaded member 22 then expands and contracts in the direction that ejects the protective insert 21 out of the protective recess 2. A plurality of engaging grooves 231 are defined on the inner wall of the protective insert 21, and the plurality of engaging grooves 231 are circumferentially distributed on the inner wall of the protective insert 21. Engaging members 23 are movable within the engaging grooves 231, for engaging and limiting the protective insert 21.

[0052] Reference Figure 2 The clamping member 23 includes an electromagnet 3 and a limit block 31. The limit block 31 slides in the clamping groove 231. The opening surface of the clamping groove 231 is configured to be constricted. The end of the limit block 31 is adapted to the constricted clamping groove 231. The limit block 31 slides in the direction away from or into the protective groove 2. The electromagnet 3 is embedded in the bottom wall of the clamping groove 231 facing its own opening surface. After the electromagnet 3 is energized, it is used to attract the limit block 31 to slide in the direction of deepening into the clamping groove 231 to exit the protective groove 2. The limit block 31 is used to clamp and contact the side wall of the protective plug-in 21 facing away from the socket component 13 to limit the protective plug-in 21 in the protective groove 2.

[0053] Reference Figure 1 and Figure 2 , a plurality of driving members 32 are installed on the main body 1, and each energy storage member 12 corresponds to a driving member 32. The driving member 32 is installed and embedded in the upper end of the outer shell of the energy storage member 12, or the driving member 32 can also be installed and embedded in the inner wall of the chamber 11 at the upper end of the energy storage member 12. A sealing plate 33 is fixedly connected to the end of the output shaft of the driving member 32. The output shaft of the driving member 32 extends outward to push the sealing plate 33 to move and seal the opening of the protective groove 2. The sealing plate 33 is made of an insulating material with a certain flexibility on the surface, such as a rigid insulating glass or other material on the inside, and a flexible material such as rubber is wrapped on the outside. An acceleration detection member 24 is installed on the main body 1. The acceleration detection member 24 is used to detect acceleration, obtain acceleration signals and output them. The acceleration detection member 24 can use an acceleration sensor. The diameter of the sealing plate 33 is larger than the diameter of the opening surface of the protective groove 2, and the inner wall of the protective groove 2 is recessed inward for adaptation to increase the creepage distance.

[0054] Reference Figure 3For ease of understanding, the present embodiment includes two energy storage components 12. Each energy storage component 12 includes a battery module 4. Each battery module 4 includes a battery Q and three switches K. The first battery module 4 includes a battery Q1, a switch K1, a switch K2, and a switch K3. The second battery module 4 includes a battery Q2, a switch K4, a switch K5, and a switch K6. The positive and negative electrodes of the battery Q are electrically connected to the socket component 13. One end of the switch K1 is connected in parallel to the positive electrode of the battery Q1. One end of the switch K2 is connected in parallel to the other end of the switch K1, and the other end of the switch K2 is connected in parallel to the negative electrode of the battery Q1. Switches K1 and K2 are connected in parallel to the positive electrode of the battery Q2. One end of the switch K3 is connected in parallel between the switch K2 and the negative electrode of the battery Q, and the other end of the switch K3 is connected in parallel to the negative electrode of the battery Q2. When switches K1 and K3 are on and switch K2 is off, batteries Q1 and Q2 are connected in parallel to output a high current. When switches K1, K2, and K3 are all off, batteries Q1 and Q2 each output their own current. When switches K1 and K3 are off and switch K2 is on, batteries Q1 and Q2 are connected in series to output a high voltage. If more energy storage components 12 are needed, they can be connected in the same manner as the first battery module 4 and the second battery module 4.

[0055] The energy storage component 12 or the acceleration detection component 24 may include a processor and a database. The database is used to store various threshold data such as the allowed protocol, damage voltage threshold, warning threshold, mode threshold, etc. The processor is used to receive data such as the charging protocol, energy storage voltage, acceleration signal, discharge mode data, etc., and call the corresponding threshold data from the database and perform calculations to obtain the discharge signal, protection signal, and protection circuit signal and output them.

[0056] A processor can include a central processing unit (CPU) or MPU, or a host system built around a CPU or MPU, including both hardware and software. Once a meter is equipped with a processor, people can freely control the metering instrument through programming, making it operate as desired. The processor can control local measurement transmission, remote measurement transmission, and remote communication through internal protocols. Internal protocols broadly refer to all protocols that enable intercommunication or links within the same metering instrument or system, including some or all of the following: human-computer interaction protocols, software / hardware (interface) protocols, chip bus (C-Bus) protocols, and internal bus (I-Bus) protocols. With the advancement of integrated circuit technology, some protocols that were considered external bus (E-Bus) protocols have also become internal protocols after the external bus (E-Bus) has been integrated into the chip.

[0057] The implementation principle of a mobile energy storage integrated machine in an embodiment of the present application is as follows: when power is supplied in an earthquake-stricken area, the acceleration detection component 24 detects that the energy storage component 12 is subjected to aftershocks, and then the electromagnet 3 is energized to attract the limit block 31 to slide, and the limit block 31 slides to release the limit on the protective plug-in 21. The protective plug-in 21 will be ejected to the outside of the protective groove 2 under the elastic force of the pop-up elastic component 22, and then the driving component 32 controls the sealing plate 33 to close the opening surface of the protective groove 2 for protection.

[0058] The present application embodiment discloses a method for discharging a mobile energy storage device. Figure 4 The discharging method of the mobile energy storage device includes the following steps:

[0059] S1. Obtain charging agreement;

[0060] S11, determining and outputting a discharge signal through a charging protocol and a preset permission protocol;

[0061] S12, obtaining energy storage voltage;

[0062] S13, determining a discharge signal based on the energy storage voltage and a preset damage voltage threshold and outputting the signal;

[0063] S14: Receive an emergency power supply signal, determine a discharge signal based on the emergency power supply signal, and output the discharge signal.

[0064] In detail, after the user connects the electrical device to the energy storage device 12, the charging protocol is first communicated. The energy storage device 12 reads the protocol of the electrical device to obtain the charging protocol, and then compares it with its own allowed protocol. If the protocols are consistent, a discharge signal is determined to discharge, and the energy storage device 12 discharges to supply power to the electrical device. If they are inconsistent, a discharge signal is determined not to discharge. The energy storage device 12 obtains its own energy storage voltage in real time, and the damage voltage threshold is set to 3.2V. If the voltage inside the energy storage device 12 is less than 3.2V, it means that the remaining power is too low. If charging continues, the maximum capacity will be permanently damaged. At this time, a discharge signal not to discharge is output to the energy storage device 12, and the user can output an emergency power supply signal. For example, in an emergency, even if the maximum capacity of the energy storage device 12 is damaged, the emergency power supply signal can be input to ignore the calculation in step S13 and continue to discharge and supply power.

[0065] Reference Figure 5 , further comprising the following steps:

[0066] S2. Obtain acceleration signal and timing data;

[0067] S21, determining vibration data through the acceleration signal and timing data;

[0068] S22, obtaining discharge status data;

[0069] S23, determining an ejection signal to electromagnet 3 based on vibration data, a preset warning threshold, and discharge status data;

[0070] S24, determining a protection signal based on the vibration data, the warning threshold, and the discharge status data and outputting the signal to the driver 32;

[0071] S25, receiving a transport signal;

[0072] S26. Temporarily modify the warning threshold value based on the transport signal, the preset alarm threshold value, and the preset transport time data.

[0073] Detailed: If the acceleration signal is from 0 to 10m / s 2 to -10m / s 2 If the timing data is 0.1s and 0.1s, it means that the acceleration of subject 1 increases from 0 to 10m / s within 0.1s. 2 , and then from 10m / s in 0.1s 2 Dropped to -10m / s 2 , then the vibration data is [10 / 0.1, (10-(-10)) / 0.1] = [100, 200], and the vibration data can also be the calculated speed. For example, if the acceleration signal is 10 and the time is 2s, it means that the vibration data at this time is 20m / s. When the speed is too high, there is also a threat to judge the protection socket component 13; the discharge status data is whether the socket component 13 is discharging. For example, the discharge status data can be 1 to indicate that the high level is discharging, and 0 to indicate that the low level is not discharging. If the discharge status data is 1, if the vibration data is [100, 200], the warning threshold is set to 150, 100<150<200, it means that the acceleration at the second 0.1s is too large, and aftershocks or the main body 1 may fall may occur. In such cases, a pop-up signal will be triggered to the electromagnet 3 to power the electromagnet 3, and then the protective plug-in 21 will be popped out, and then a protection signal will be triggered to the driving member 32 to close the opening surface of the protective groove 2; if the user is carrying the main body 1, due to the uneven ground, and the user wants to allow bumps, a carrying signal can be input to increase the warning threshold in a short time. The alarm threshold is set to 300, and the carrying time data is set to 600s, which means that the original warning threshold of 150 will be temporarily replaced by the alarm threshold of 300 to participate in the calculation of step S23 and step S24, and the replacement time is 600s of the carrying data. If the vibration data exceeds 300, it means that the acceleration is too large, which will pose a greater threat to the energy storage component, and the calculation of step S23 and step S24 will be triggered.

[0074] Reference Figure 6 , further comprising the following steps:

[0075] S3, receiving discharge mode data;

[0076] S31, determining a discharge mode signal based on the discharge mode data and a preset mode threshold and outputting the signal to the battery module 4 to control the switches K1, K2, and K3;

[0077] S32, determining a protection circuit signal based on vibration data and a warning threshold;

[0078] S33 , determining and outputting a discharge mode signal based on the protection circuit signal and the mode threshold, wherein the protection circuit signal has a higher priority than the discharge mode data.

[0079] Detailed: The discharge mode data can be high current discharge mode, high voltage discharge mode, and normal discharge mode. The user can select one of the three modes to input, and then the mode threshold will convert the input discharge mode data into the corresponding data signal. The mode threshold is set to [high current discharge mode, switch K1 is on, switch K2 is off, switch K3 is on], [high voltage discharge mode, switch K1 is off, switch K2 is on, switch K3 is off], [normal discharge mode, switch K1 is off, switch K2 is off, switch K3 is off], [protection circuit signal, switch K1 is off] , switch K2 is disconnected, switch K3 is disconnected], for example, if the user selects the high current discharge mode, the corresponding discharge mode signal indicating that switch K1 is turned on, switch K2 is disconnected, and switch K3 is turned on is obtained to control switch K; when the vibration data exceeds the warning threshold, a protection circuit signal indicating that the energy storage component 12 needs to be protected is obtained. At this time, the discharge mode signals corresponding to switch K1 being disconnected, switch K2 being disconnected, and switch K3 being disconnected are obtained and switch K is controlled, and the priority of the discharge mode signal calculated in this step S33 is higher than the discharge mode signal calculated in step S31.

[0080] The embodiment of the present application discloses a computer-readable storage medium storing a computer program capable of being loaded by a processor and executing a method for discharging a mobile energy storage device.

[0081] Computer-readable storage media include, for example, various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0082] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A mobile energy storage integrated machine, characterized by: The invention comprises a main body (1), wherein a plurality of chambers (11) are provided on the main body (1), an energy storage component (12) for storing energy is provided in the chamber (11), a socket component (13) for plugging in and drawing power from an electrical device is provided on the energy storage component (12), a crawler assembly (14) for movement is provided on the lower end of the main body (1), a driving assembly (15) for driving the crawler assembly (14) for transmission is provided on the main body (1), and a photovoltaic assembly (16) for generating photovoltaic power and transmitting electrical energy to the energy storage component (12) for energy storage is provided on the main body (1); The energy storage component (12) is provided with a protection groove (2), the socket component (13) is arranged on the bottom wall of the protection groove (2), a protection plug-in (21) is slidably arranged in the protection groove (2), the protection plug-in (21) is plugged into the socket component (13), and the protection plug-in (21) is used for plugging in a plug of an electrical device, a pop-up elastic component (22) is provided between the bottom wall of the protection groove (2) and the protection plug-in (21) for popping out the protection plug-in (21) to the outside of the protection groove (2), a clamping component (23) is movably provided on the inner wall of the protection plug-in (21) for clamping and limiting the protection plug-in (21), and an acceleration detection component (24) is provided on the main body (1), and the acceleration detection component (24) is used to detect acceleration, obtain an acceleration signal, and output it.

2. The mobile energy storage integrated device according to claim 1, characterized in that: The clamping member (23) comprises an electromagnet (3) and a limiting block (31), wherein the limiting block (31) is used to clamp and limit the protection plug-in (21) in the protection groove (2), and the electromagnet (3) is energized to attract the limiting block (31) to move and release the clamping limit on the protection plug-in (21). A driving member (32) is provided on the main body (1), and a sealing plate (33) is provided on the output shaft of the driving member (32). The driving member (32) is used to control the movement of the sealing plate (33) to seal the opening of the protection groove (2).

3. The mobile energy storage integrated device according to claim 2, characterized in that: Each of the energy storage components (12) includes a battery module (4), the battery module (4) including a battery Q, the positive electrode and the negative electrode of the battery Q being electrically connected to the socket component (13), at least a switch K1 and a switch K2 being electrically connected between the positive electrode and the negative electrode of the battery Q, the switch K1 being connected between the positive electrode of the battery Q of the battery module (4) and one end of the switch K2; the other end of the switch K2 being connected to the negative electrode of the battery Q of the battery module (4); the connected end of the switch K1 and the switch K2 being simultaneously connected to the positive electrode of the battery Q of the adjacent battery module; and further including a switch K3, one end of the switch K3 being connected to the connection between the other end of the switch K2 and the negative electrode of the battery Q of the battery module (4), the other end of the switch K3 being connected to the negative electrode of the battery Q of the adjacent battery module, and the switching of the switch K1, the switch K2 and the switch K3 being on and off to control the output of the battery Q of the battery module alone, or the output of the battery Q of the battery module in parallel or in series with the battery Q of the adjacent battery module.

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