A flying car power solid-state battery and its power supply system

Abstract

The present invention relates to the technical field of low-altitude economy, specifically to a flying car power solid-state battery and its power supply system, comprising a main shell, a top cover connected to the top of the main shell, a plurality of battery slots arranged in the main shell, battery blocks installed inside the battery slots, the battery blocks installed in the battery slots through fixing components, a plurality of air ducts arranged at the bottom of the main shell, dust-proof cooling components arranged in the air ducts. The flying car power solid-state battery and its power supply system proposed by the present invention, due to the setting of fixing components, the operation is simpler and more convenient when installing and disassembling the battery blocks, by setting structures such as a central processing unit module, a collection module, and a protection module, the battery can be monitored in real time when the power battery is working, the temperature control module can keep it within the optimal working temperature range, and the protection module can keep its voltage normal to prevent voltage abnormalities such as output overload, which is safer.

Description

Technical Field

[0001] The present invention relates to the field of low-altitude economic technology, specifically to a solid-state power battery for a flying car and a power supply system thereof. Background Art

[0002] The low-altitude economy is a comprehensive economic form that is driven by various low-altitude flight activities of various manned and unmanned aircraft, and radiates to promote the integrated development of related fields [1]. The low-altitude economy is widely reflected in the primary, secondary, and tertiary industries, and plays an increasingly important role in promoting economic development, strengthening social security, and serving national defense. "Low-altitude economy" refers to economic activities based on low-altitude airspace and dominated by the general aviation industry. It involves industries and applied industries such as low-altitude flight, aviation tourism, scientific research and education, and products include drones and helicopters. As a strategic emerging industry, the low-altitude economy has a long industrial chain and strong driving force. It is widely used in the fields of medicine, meteorology, agriculture, etc. At present, the main products in the low-altitude field include the highly popular eVTOL (electric vertical take-off and landing vehicle), drones (consumer and industrial), helicopters, and traditional fixed-wing aircraft.

[0003] At present, flying cars, as an important new part of the low-altitude economy and as a development trend of future transportation, can alleviate road congestion to a certain extent and improve the efficiency of transportation. Among them, power batteries play an extremely important role as the power source of automobiles. However, power batteries now have certain shortcomings. For example, the working efficiency of power batteries will decrease under high or low temperatures, which will affect the normal use of the vehicle. Therefore, improvements are needed. Summary of the invention

[0004] The purpose of the present invention is to provide a solid-state power battery and a power supply system for a flying car to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: A solid-state power battery for a flying car, comprising a main shell, a top cover connected to the top of the main shell, a plurality of battery slots arranged in the main shell, battery blocks installed inside the battery slots, the battery blocks installed in the battery slots through fixing components, a plurality of air ducts arranged at the bottom of the main shell, and a dustproof cooling component arranged in the air ducts.

[0006] Preferably, an array of docking plates are provided on the top cover and the side walls of the main shell, and the docking plates are fixedly connected by screws. A plurality of heat dissipation ports are provided on the top cover, and protective filters are installed in the heat dissipation ports.

[0007] Preferably, a plurality of air slots are arranged on the side wall of the battery slot, a temperature sensor is arranged on the inner wall of the battery slot, and a heating resistor network is arranged inside the side wall of the battery slot.

[0008] Preferably, the fixing assembly includes a lifting rod, which is movably arranged inside the main shell body, an array of side rods is arranged on the side wall of the lifting rod, a downward pressing inclined block is arranged at the bottom of the downward pressing inclined block, two driving blocks are arranged on the lifting rod, a threaded cylinder is arranged on the driving block, a torsion column is rotatably installed on the upper surface of the main shell body, the lower section of the torsion column is a threaded rod and is connected with the threaded cylinder, the fixing assembly also includes a bottom rod, the bottom rod is located below the side rod, a force-bearing inclined block corresponding to the downward pressing inclined block is arranged on the upper surface of the bottom rod, a second spring is connected to one side of the bottom rod, and an array of positioning columns is arranged at the other end of the bottom rod, the positioning columns extend into the battery slot and are inserted into the positioning holes on the side wall of the battery block.

[0009] Preferably, a protective net is provided at the opening of the air duct, and a hole is connected between the air duct and the battery slot.

[0010] Preferably, the cooling assembly includes a cooling fan installed at the air duct port, a dustproof part is arranged next to the cooling fan, and the dustproof part is connected to the dust removal assembly.

[0011] Preferably, the dustproof part comprises a central block, a plurality of sealing plates are arranged on the side wall of the central block, filter plates are arranged between the sealing plates, and a connecting column is arranged on the surface of the central block;

[0012] The dust removal assembly includes a movable ring, which is movably sleeved on a connecting column, a first spring is connected between the movable ring and the center block, a plurality of side plates are arranged on one side surface of the movable ring, the side plates correspond to the filter plates, a ejector pin is arranged on one side surface of the side plate, the ejector pin and the filter holes on the filter plate correspond one to one, a telescopic rod is connected to the other side surface of the side plate, the telescopic rod is mounted on the mounting column through a support rod, the mounting column is rotatably mounted in the air duct, the end of the mounting column is connected to a central shaft, a driven gear is arranged in the middle of the central shaft, an adjusting motor is arranged inside the air duct, the output end of the adjusting motor is connected to a driving gear, and the driving gear and the driven gear are meshed and connected.

[0013] A power supply system for a flying car power solid-state battery includes a central processing unit module, a collection module, a data analysis module, a temperature control module and a protection module. The input end of the central processing unit module is connected to the output end of the collection module, the central processing unit module is bidirectionally connected to the data analysis module, the temperature control module and the protection module, and the temperature control module is bidirectionally connected to the comparison module.

[0014] The temperature control module includes a heating module and a cooling module;

[0015] The protection module includes an alarm unit, a control unit, an execution unit and a driving unit.

[0016] Preferably, the acquisition module is used to collect data on the output voltage and battery temperature of the battery, and upload the collected data to the central processing unit module, which organizes the data;

[0017] The data analysis module determines the safety range and elastic range according to the factory status of the battery itself. The data analysis module is also used to analyze the data organized in the central processing unit module, compare it with the set value, and determine whether corresponding measures need to be taken. After integrating all the data, the real-time status of the battery is calculated in combination with the battery usage time, and the remaining service life of the battery is calculated.

[0018] Preferably, the comparison module is provided with an optimal operating temperature range value of the battery. When the temperature value collected by the collection module is higher than the optimal operating temperature range value, the cooling module works to cool the battery. When the temperature value collected is lower than the optimal operating temperature range value, the heating module works to heat the battery.

[0019] The control unit acquires the voltage data and status data acquired by the acquisition module, and outputs a corresponding control signal. The control unit is provided with an early warning value and a protection start value; the drive unit acquires the control signal, and outputs a corresponding drive signal according to the control signal; the execution unit acquires the drive signal, and executes a corresponding battery power-on and power-off operation according to the drive signal; when the voltage value received by the control unit is lower than the protection start value, the drive unit is controlled to drive the execution unit to disconnect the battery circuit; the alarm unit is connected to the control unit, and is used to send an alarm signal according to the control of the control unit. When the voltage value received by the control unit is lower than the early warning value, the alarm degree is controlled to control the alarm unit to alarm.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The present invention proposes a flying car power solid-state battery and a power supply system thereof. Because fixed components are provided, the operation is simpler and more convenient when installing and disassembling the battery block. By providing a central processing unit module, an acquisition module, a protection module and other structures, the battery can be monitored in real time when the power battery is working. The temperature control module can keep it within the optimal operating temperature range. The protection module can keep its voltage normal and prevent voltage abnormalities such as output overload, which is safer.

[0022] 2. When installing the battery blocks, place each battery block into the corresponding battery slot, and then rotate the torsion column to allow the driving block to drive the lifting rod and the side rod to descend, so that the downward pressing inclined block presses against the force-bearing inclined block to move it, and the bottom rod moves accordingly. The force-bearing inclined block is inserted into the positioning hole on the side wall of the battery block, and the battery block can be stably installed.

[0023] 3. When the actual operating temperature of the battery exceeds the optimal operating temperature, the cooling fan starts, allowing the external low-temperature gas to enter from the air duct, and then enter the battery slot through the hole. The air flowing through the battery block can take out the heat and discharge it from the heat dissipation port. When the air is circulating, the dustproof parts can play a dustproof role to prevent dust from entering the inside of the equipment. After the equipment has been working for a long time, a large amount of dust may adhere to the surface of the filter plate. If blockage occurs, it will affect the cooling of the equipment, so it is necessary to remove the dust; when removing dust, the driving gear is driven to rotate by controlling the start adjustment motor, and then the central axis and the mounting column are driven to rotate by the driven gear. The side plate rotates a certain angle, and the side plate changes from the original alignment with the sealing plate to the alignment with the filter plate, and then the telescopic rod is controlled to extend, and the side plate moves so that the ejector pin passes through the filter hole on the filter plate, which can eject the internal clogged dust, and then the dust can be knocked away by the cooling fan in the opposite direction, so as to keep the dustproof parts transparent and avoid affecting the heat dissipation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the device of the present invention.

[0025] Figure 2 This is a schematic diagram of the battery pack installation of the present invention.

[0026] Figure 3 This is a structural diagram of the fixing assembly of the present invention.

[0027] Figure 4 It is a schematic diagram of the lifting rod structure of the present invention.

[0028] Figure 5 It is a schematic diagram of the bottom rod structure of the present invention.

[0029] Figure 6 It is a cross-sectional view of the air duct structure of the present invention.

[0030] Figure 7 for Figure 6 Enlarged view of point A in the middle.

[0031] Figure 8 This is a structural diagram of the dustproof part of the present invention.

[0032] Fig. 9 This is a structural diagram of the dust removal component of the present invention.

[0033] Fig.10 Schematic diagram of the system structure of the present invention.

[0034] Fig.11 It is a schematic diagram of the protection module structure in the present invention.

[0035] In the figure: main shell 1, top cover 2, heat dissipation port 3, battery slot 4, battery block 5, air duct 6, protective net 7, cooling fan 8, dustproof part 9, center block 901, filter plate 902, sealing plate 903, connecting column 904, movable ring 10, first spring 11, side plate 12, ejector pin 1201, telescopic rod 13, mounting column 14, center shaft 15, driven gear 16, adjusting motor 17, driving gear 18, threaded cylinder 19, lifting rod 20, driving block 21, torsion column 22, side rod 23, downward pressing inclined block 24, bottom rod 25, force-bearing inclined block 26, second spring 27, positioning column 28. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] See also Figures 1 to 11 The present invention provides a technical solution: a flying car power solid-state battery, comprising a main housing 1, a top cover 2 connected to the top of the main housing 1, a plurality of docking plates arranged on the top cover 2 and the side wall of the main housing 1, the docking plates are fixedly connected by screws, a plurality of heat dissipation ports 3 are arranged on the top cover 2, and a protective filter is installed in the heat dissipation port 3. A plurality of battery slots 4 are arranged in the main housing 1, a battery block 5 is installed inside the battery slot 4, and a connection contact is arranged at the bottom of the battery block 5. When the battery block 5 is inserted into the battery slot 4, it can be electrically connected to the main housing 1, and a plurality of individual battery blocks 5 form a larger battery pack. A plurality of air slots are arranged on the side wall of the battery slot 4, and the battery block 5 is not tightly fitted with the side wall of the battery slot 4, and the air permeability is good. The high-speed circulation of air can achieve a good cooling effect. A temperature sensor is arranged on the inner wall of the battery slot 4, and a heating resistor network is arranged inside the side wall of the battery slot 4. When the actual temperature of the battery block 5 is too low, the heating resistor network is turned on to heat the battery block 5.

[0038] The battery block 5 is installed in the battery slot 4 through a fixing assembly, and the fixing assembly includes a lifting rod 20, which is movably arranged inside the main shell 1, and an array of side rods 23 are arranged on the side wall of the lifting rod 20, and a downward pressing inclined block 24 is arranged at the bottom of the downward pressing inclined block 24, and two driving blocks 21 are arranged on the lifting rod 20, and a threaded barrel 19 is arranged on the driving block 21. A torsion column 22 is rotatably installed on the upper surface of the main shell 1, and the lower section of the torsion column 22 is a threaded rod and is connected with the threaded barrel 19. By rotating the torsion column 22, The lifting rod 20 can be moved up and down. The fixing assembly also includes a bottom rod 25. The bottom rod 25 is located below the side rod 23. A force-bearing inclined block 26 corresponding to the downward pressing inclined block 24 is arranged on the upper surface of the bottom rod 25. The inclined surfaces of the two are pressed together. When the downward pressing inclined block 24 descends, the force-bearing inclined block 26 can be squeezed and pushed to one side. A second spring 27 is connected to one side of the bottom rod 25. An array of positioning columns 28 is arranged at the other end of the bottom rod 25. The positioning columns 28 extend into the battery slot 4 and are inserted into the positioning holes on the side wall of the battery block 5. When installing the battery block 5, each battery block 5 is placed in the corresponding battery slot 4, and then the torsion column 22 is rotated, so that the driving block 21 can drive the lifting rod 20 and the side rod 23 to descend, so that the downward pressing inclined block 24 presses against the force-bearing inclined block 26 to move it, and the bottom rod 25 moves accordingly. The force-bearing inclined block 26 is inserted into the positioning hole on the side wall of the battery block 5, and the battery block 5 can be stably installed.

[0039] A plurality of air ducts 6 are arranged at the bottom of the main housing 1 , a protective net 7 is arranged at the opening of the air duct 6 , a hole is connected between the air duct 6 and the battery slot 4 , and a dustproof cooling component is arranged in the air duct 6 .

[0040] The cooling assembly includes a cooling fan 8 installed at the port of the air duct 6, a dustproof member 9 is arranged next to the cooling fan 8, and the dustproof member 9 is connected to the dust removal assembly, and the dustproof member 9 includes a central block 901, and a plurality of sealing plates 903 are arranged on the side wall of the central block 901, and a filter plate 902 is arranged between the sealing plates 903, and a connecting column 904 is arranged on the surface of the central block 901; the dust removal assembly includes a movable ring 10, and the movable ring 10 is movably sleeved on the connecting column 904, and a first spring 11 is connected between the movable ring 10 and the central block 901, and a plurality of side plates 12 are arranged on the side surface of the movable ring 10, and the side plates 12 are provided on the side surface of the movable ring 10. The plate 12 corresponds to the filter plate 902, and a ejector pin 1201 is provided on one side surface of the side plate 12. The ejector pin 1201 corresponds to the filter hole on the filter plate 902 one by one. A telescopic rod 13 is connected to the other side surface of the side plate 12. The telescopic rod 13 is installed on the mounting column 14 through a support rod. The mounting column 14 is rotatably installed in the air duct 6. The end of the mounting column 14 is connected to a central axis 15, and a driven gear 16 is provided in the middle of the central axis 15. An adjusting motor 17 is provided inside the air duct 6, and a driving gear 18 is connected to the output end of the adjusting motor 17. The driving gear 18 and the driven gear 16 are meshed and connected.

[0041] A power supply system for a flying car power solid-state battery includes a central processing unit module, a collection module, a data analysis module, a temperature control module and a protection module. The input end of the central processing unit module is connected to the output end of the collection module. The central processing unit module is bidirectionally connected to the data analysis module, the temperature control module and the protection module. The temperature control module is bidirectionally connected to the comparison module. The data analysis module determines the safety range and elastic range according to the factory status of the battery itself. The data analysis module is also used to analyze the data sorted in the central processing unit module, compare it with the set value, and determine whether corresponding measures need to be taken. After integrating all the data, the real-time status of the battery is calculated in combination with the battery usage time, and the remaining service life of the battery is calculated. The collection module is used to collect data on the output voltage and battery temperature of the battery, and upload the collected data to the central processing unit module, which sorts the data. The comparison module is set with the optimal operating temperature range of the battery. When the temperature value collected by the collection module is higher than the optimal operating temperature range, the cooling module works to cool the battery. When the collected temperature value is lower than the optimal operating temperature range, the heating module works to heat the battery.

[0042] The temperature control module includes a heating module and a cooling module, the heating module includes a heating resistor network, and the cooling module includes a cooling fan 8;

[0043] The protection module includes an alarm unit, a control unit, an execution unit and a drive unit. The control unit obtains the voltage data and status data collected by the collection module and outputs a corresponding control signal. The control unit is provided with an early warning value and a protection start value; the drive unit obtains the control signal and outputs a corresponding drive signal according to the control signal; the execution unit obtains the drive signal and performs a corresponding battery power-on and power-off operation according to the drive signal; when the voltage value received by the control unit is lower than the protection start value, the drive unit is controlled to drive the execution unit to disconnect the battery circuit; the alarm unit is connected to the control unit and is used to send an alarm signal according to the control of the control unit. When the voltage value received by the control unit is lower than the early warning value, the alarm degree is controlled to control the alarm unit to alarm.

[0044] The present invention proposes a flying car power solid-state battery and a power supply system thereof. Because a fixed component is provided, the operation is simpler and more convenient when installing and removing the battery block 5. By providing a central processing unit module, an acquisition module, a protection module and other structures, the battery can be monitored in real time when the power battery is working. The temperature control module can keep it within the optimal operating temperature range. The protection module can keep its voltage normal and prevent voltage abnormalities such as output overload, which is safer.

[0045] When installing the battery blocks 5, each battery block 5 is placed in the corresponding battery slot 4, and then the torsion column 22 is rotated, so that the driving block 21 can drive the lifting rod 20 and the side rod 23 to descend, and then the downward pressing inclined block 24 presses against the force-bearing inclined block 26 to move it, and the bottom rod 25 moves accordingly, and the force-bearing inclined block 26 is inserted into the positioning hole on the side wall of the battery block 5, so that the battery block 5 can be stably installed. When the actual working temperature of the battery exceeds the optimal working temperature, the cooling fan 8 is started, so that the external low-temperature gas enters from the air duct 6, and then enters the battery slot 4 through the hole. The air flows through the battery block 5 to take out the heat and discharge it from the heat dissipation port 3. When the air is circulating, the dustproof part 9 can play a dustproof role to prevent dust from entering the inside of the device. After the device has been working for a long time, a large amount of dust may adhere to the surface of the filter plate 902. If blockage occurs, it will affect the cooling of the device, so it is necessary to remove the dust; when removing dust, the driving gear 18 is driven to rotate by controlling the start-up adjustment motor 17, and then the central axis 15 and the mounting column 14 are driven to rotate by the driven gear 16, and the side plate 12 is rotated by a certain angle. The side plate 12 changes from the original alignment state with the sealing plate 903 to the alignment with the filter plate 902, and then the telescopic rod 13 is controlled to extend, and the side plate 12 moves so that the ejector pin 1201 passes through the filter hole on the filter plate 902, which can eject the internal clogged dust, and then the dust can be knocked away by the cooling fan 8 in the opposite direction, so as to keep the dustproof part 9 transparent and avoid affecting the heat dissipation of the device.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A solid-state power battery for a flying car, comprising a main housing (1), characterized in that: The top of the main shell (1) is connected to a top cover (2), a plurality of battery slots (4) are arranged inside the main shell (1), a battery block (5) is installed inside the battery slot (4), and the battery block (5) is installed in the battery slot (4) through a fixing assembly, the fixing assembly comprises a lifting rod (20), the lifting rod (20) is movably arranged inside the main shell (1), a plurality of side rods (23) are arranged on the side wall of the lifting rod (20), a downward pressing inclined block (24) is arranged at the bottom of the downward pressing inclined block (24), two driving blocks (21) are arranged on the lifting rod (20), a threaded cylinder (19) is arranged on the driving block (21), and a torsion column (22) is rotatably installed on the upper surface of the main shell (1), The lower section of the torsion column (22) is a threaded rod and is connected to the threaded cylinder (19). The fixing assembly also includes a bottom rod (25). The bottom rod (25) is located below the side rod (23). A force-bearing inclined block (26) corresponding to the downward pressing inclined block (24) is arranged on the upper surface of the bottom rod (25). A second spring (27) is connected to one side of the bottom rod (25). An array of positioning columns (28) is arranged at the other end of the bottom rod (25). The positioning columns (28) extend into the battery slot (4) and are inserted into positioning holes on the side wall of the battery block (5). A plurality of air ducts (6) are arranged at the bottom of the main housing (1). A dustproof cooling assembly is arranged in the air duct (6). The cooling assembly includes a cooling element installed at the end of the air duct (6). A cooling fan (8) is disposed at the opening of the cooling fan (8), and a dustproof member (9) is arranged next to the cooling fan (8), the dustproof member (9) comprising a central block (901), a plurality of sealing plates (903) are arranged on the side wall of the central block (901), filter plates (902) are arranged between the sealing plates (903), and a connecting column (904) is arranged on the surface of the central block (901), the dustproof member (9) is connected to a dust removal component, and the dust removal component comprises a movable ring (10), the movable ring (10) is movably sleeved on the connecting column (904), a first spring (11) is connected between the movable ring (10) and the central block (901), and a plurality of side plates (12) are arranged on the surface of one side of the movable ring (10), and the side plates (12) and the filter plates (902) are connected to the central block (901). The side plate (902) corresponds to the side plate (902), a pin (1201) is arranged on one side surface of the side plate (12), the pin (1201) and the filter hole on the filter plate (902) correspond to each other, a telescopic rod (13) is connected to the other side surface of the side plate (12), the telescopic rod (13) is mounted on a mounting column (14) through a support rod, the mounting column (14) is rotatably mounted in the air duct (6), the end of the mounting column (14) is connected to a central shaft (15), a driven gear (16) is arranged in the middle of the central shaft (15), an adjusting motor (17) is arranged inside the air duct (6), the output end of the adjusting motor (17) is connected to a driving gear (18), and the driving gear (18) and the driven gear (16) are meshingly connected.

2. The solid-state power battery for a flying car according to claim 1, characterized in that: An array of docking plates are provided on the top cover (2) and the side wall of the main shell (1), and the docking plates are fixedly connected by screws. A plurality of heat dissipation openings (3) are provided on the top cover (2), and protective filters are installed in the heat dissipation openings (3).

3. The solid-state power battery for a flying car according to claim 1, characterized in that: A plurality of air passage slots are arranged on the side wall of the battery slot (4), a temperature sensor is arranged on the inner side wall of the battery slot (4), and a heating resistance network is arranged inside the side wall of the battery slot (4).

4. The solid-state power battery for a flying car according to claim 1, characterized in that: A protective net (7) is provided at the opening of the air duct (6), and a hole is connected between the air duct (6) and the battery slot (4).

5. A power supply system for a flying car power solid-state battery according to any one of claims 1 to 4, characterized in that: It includes a central processing unit module, a collection module, a data analysis module, a temperature control module and a protection module. The input end of the central processing unit module is connected to the output end of the collection module. The central processing unit module is bidirectionally connected to the data analysis module, the temperature control module and the protection module. The temperature control module is bidirectionally connected to the comparison module. The temperature control module includes a heating module and a cooling module; The protection module includes an alarm unit, a control unit, an execution unit and a driving unit.

6. The power supply system of a solid-state battery for a flying car according to claim 5, characterized in that: The acquisition module is used to collect data on the output voltage and battery temperature of the battery, and upload the collected data to the central processing unit module, which organizes the data; The data analysis module determines the safety range and elastic range according to the factory status of the battery itself. The data analysis module is also used to analyze the data organized in the central processing unit module, compare it with the set value, and determine whether corresponding measures need to be taken. After integrating all the data, the real-time status of the battery is calculated in combination with the battery usage time, and the remaining service life of the battery is calculated.

7. The power supply system of a solid-state battery for a flying car according to claim 5, characterized in that: The comparison module is provided with an optimal operating temperature range value of the battery. When the temperature value collected by the collection module is higher than the optimal operating temperature range value, the cooling module works to cool the battery. When the temperature value collected is lower than the optimal operating temperature range value, the heating module works to heat the battery. The control unit acquires the voltage data and status data acquired by the acquisition module, and outputs a corresponding control signal. The control unit is provided with an early warning value and a protection start value; the drive unit acquires the control signal, and outputs a corresponding drive signal according to the control signal; the execution unit acquires the drive signal, and executes a corresponding battery power-on and power-off operation according to the drive signal; when the voltage value received by the control unit is lower than the protection start value, the drive unit is controlled to drive the execution unit to disconnect the battery circuit; the alarm unit is connected to the control unit, and is used to send an alarm signal according to the control of the control unit. When the voltage value received by the control unit is lower than the early warning value, the alarm degree is controlled to control the alarm unit to alarm.

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