A battery management system

Abstract

The application relates to the technical field of battery management, in particular to a battery management system. The battery management system comprises a temperature detection unit for detecting the operation temperature of a battery; a temperature control unit for controlling the operation temperature of the battery; an evaluation unit for evaluating the health state of the battery; a prewarning unit for prewarning the health state of the battery; and a master control unit for judging whether the temperature detected by the temperature detection unit exceeds a set temperature threshold value, and controlling the temperature control unit to act when the operation temperature of the battery exceeds the set temperature threshold value; the master control unit is also used for receiving the evaluation result of the evaluation unit, and controlling the prewarning unit to act when the evaluation result exceeds a set health threshold value. Through the above, the operation temperature of the battery can be preferably controlled, and the health state of the battery can be evaluated and prewarned.

Description

Technical Field

[0001] This invention relates to the field of battery management technology, and more specifically, to a battery management system. Background Technology

[0002] Electricity is a relatively scarce resource, and its use is closely related to the patterns of human life and production, thus exhibiting typical peak-valley characteristics. Although China has implemented measures to charge different fees for peak and off-peak electricity consumption, these measures are only a partial incentive and cannot effectively solve the problem of peak-shaving at its root. Peak-shaving and valley-filling energy storage systems can store energy during off-peak hours and supply power to electrical equipment during peak hours, thereby alleviating power supply pressure and reducing electricity costs for users. The core component of peak-shaving and valley-filling energy storage devices is the battery module. The operating status of the battery module directly affects the operation of the entire system, thus requiring monitoring and management. Furthermore, considering the comprehensive utilization of energy, it is also necessary to manage and monitor the multiple power supply pathways of the battery module. Summary of the Invention

[0003] This invention provides a battery management system that overcomes one or more defects of the prior art.

[0004] A battery management system according to the present invention includes:

[0005] Temperature detection unit, which is used to detect the operating temperature of the battery;

[0006] Temperature control unit, which is used to control the operating temperature of the battery;

[0007] An evaluation unit is used to assess the health status of the battery;

[0008] A warning unit is used to provide early warnings about the battery's health status; and

[0009] The main control unit is used to determine whether the temperature detected by the temperature detection unit exceeds the set temperature threshold, and to control the temperature control unit to act when the battery operating temperature exceeds the set temperature threshold; the main control unit is also used to receive the evaluation results of the evaluation unit, and to control the warning unit to act when the evaluation results exceed the set health threshold.

[0010] Through the above methods, it is possible to better control the operating temperature of the battery, as well as assess and warn of the battery's health status.

[0011] Preferably, the temperature control unit includes a battery storage device and a constant temperature system. The battery storage device is used to place the battery assembly, and the constant temperature system is used to provide a constant temperature medium. The battery storage device has a battery assembly placement cavity inside for placing the battery assembly. A heating channel and a cooling channel, both connected to the battery assembly placement cavity, are formed on the side wall of the battery storage device. A first heat transfer component is provided in the heating channel, and a second heat transfer component is provided in the cooling channel. The first heat transfer component and the second heat transfer component have a first flow channel and a second flow channel inside for the flow of the constant temperature medium, respectively. The first heat transfer component is used to transfer the heat of the constant temperature medium in the first flow channel to the battery assembly placement cavity, and the second heat transfer component is used to transfer the heat in the battery assembly placement cavity to the constant temperature medium in the second flow channel.

[0012] The temperature detection unit includes a temperature sensor located in the battery pack placement cavity. The temperature sensor is used to detect the internal temperature of the battery pack placement cavity. The main control unit includes a processing unit for receiving the data detected by the temperature sensor.

[0013] The first flow channel forms a first inlet and a first outlet at its two ends, and the second flow channel forms a second inlet and a second outlet at its two ends. The first inlet and the second inlet, as well as the first outlet and the second outlet, are connected to the corresponding interfaces of the constant temperature system through different three-way solenoid valves.

[0014] The processing unit is used to control the operation of the corresponding three-way solenoid valve to achieve circulation of the constant temperature medium between the first flow channel and the constant temperature system when the internal temperature of the battery pack placement cavity is lower than the set threshold; the processing unit is also used to control the operation of the corresponding three-way solenoid valve to achieve circulation of the constant temperature medium between the second flow channel and the constant temperature system when the internal temperature of the battery pack placement cavity is higher than the set threshold.

[0015] Through the above methods, the operating temperature of the battery module can be better controlled, thereby ensuring that the battery module can operate within the optimal temperature range, and thus better guaranteeing the performance and lifespan of the battery module.

[0016] Preferably, the temperature control unit also includes a heat dissipation frame located at the photovoltaic module. The heat dissipation frame includes multiple horizontal heat dissipation pipes that are spaced apart and parallel to each other and connected to the outside of the photovoltaic module, and multiple vertical heat dissipation pipes that are spaced apart and parallel to each other and connected to the outside of the photovoltaic module. The horizontal heat dissipation pipes and the vertical heat dissipation pipes are interconnected.

[0017] Preferably, the photovoltaic module is encapsulated by photovoltaic glass, a first photovoltaic encapsulant film, solar cells, a second photovoltaic encapsulant film, and a photovoltaic backsheet, with a heat dissipation frame located between the second photovoltaic encapsulant film and the photovoltaic backsheet.

[0018] Preferably, the horizontal heat dissipation pipe includes a first heat dissipation pipe, a second heat dissipation pipe and a third heat dissipation pipe arranged in sequence, and the vertical heat dissipation pipe includes a fourth heat dissipation pipe, a fifth heat dissipation pipe and a sixth heat dissipation pipe arranged in sequence. A first piston chamber communicating with both the second heat dissipation pipe and the fifth heat dissipation pipe is provided at the intersection of the second heat dissipation pipe and the fifth heat dissipation pipe.

[0019] The first piston chamber is equipped with a first electric telescopic rod that is connected to the photovoltaic module and is used to cooperate with the first piston chamber to realize the absorption and discharge of airflow in the first piston chamber;

[0020] The temperature detection unit includes a photovoltaic temperature sensor located at the heat dissipation frame. The photovoltaic temperature sensor is used to detect the internal temperature of the photovoltaic module. The main control unit includes a control module for receiving the data detected by the photovoltaic temperature sensor.

[0021] The control module is used to control the first electric telescopic rod to move when the temperature data detected by the photovoltaic temperature sensor exceeds the set photovoltaic module temperature threshold.

[0022] Therefore, it can achieve better temperature control at the photovoltaic module.

[0023] Preferably, the first heat sink is provided with two second piston chambers, both of which are connected to the first heat sink and respectively connected to the fourth heat sink and the sixth heat sink. The two second piston chambers are respectively located at the intersection of the first heat sink and the fourth heat sink, and the first heat sink and the sixth heat sink.

[0024] The third heat sink is provided with two third piston chambers, which are both connected to the third heat sink and are also connected to the fourth and sixth heat sinks respectively. The two third piston chambers are respectively located at the intersection of the third heat sink and the fourth heat sink, and the third heat sink and the sixth heat sink.

[0025] The second piston chamber and the third piston chamber are respectively equipped with a second electric telescopic rod and a third electric telescopic rod that are connected to the photovoltaic module and are used to realize the intake and discharge of airflow in the second piston chamber and the third piston chamber.

[0026] The control module is used to control the first, second, and third electric telescopic rods to work together when the temperature data detected by the photovoltaic temperature sensor exceeds the set photovoltaic module temperature threshold.

[0027] Therefore, it can achieve better temperature control at the photovoltaic module.

[0028] Preferably, the evaluation unit includes a data acquisition module and a processing module. The data acquisition module is used to collect the battery's operating parameters, and the processing module is used to process the battery's operating parameters to obtain the battery's health status. Therefore, it can better achieve the evaluation of the battery's health status.

[0029] Preferably, the processing module processes the battery's operating parameters to obtain the battery's health status by constructing a health status assessment model. Therefore, it can better realize the function of the health status assessment model. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the system block diagram of the hybrid power supply system in Example 1; Figure 2 This is a schematic diagram of the system framework of an energy storage battery thermal management system in Example 1; Figure 3 This is a schematic diagram of the battery storage device in Example 1; Figure 4 This is a cross-sectional schematic diagram of the battery storage device in Example 1; Figure 5 This is a schematic diagram of the coil structure in Example 1; Figure 6 This is a schematic diagram of the drive mechanism in Example 1; Figure 7 This is a cross-sectional schematic diagram of the drive mechanism in Example 1; Figure 8 This is a schematic diagram of the cover plate in Example 1; Figure 9 This is a schematic diagram of the impeller structure in Example 1; Figure 10 This is a schematic diagram of the mounting block in Example 1; Figure 11 This is a half-cut schematic diagram of the drive mechanism in Example 1; Figure 12 for Figure 11 An enlarged schematic diagram of part A in the diagram; Figure 13 This is a schematic diagram of the slider in Example 1; Figure 14 This is a schematic diagram of the limiting block in Example 1. Figure 15 This is a schematic diagram of the photovoltaic module in Example 1; Figure 16 This is a schematic diagram of the heat dissipation frame in Example 1; Figure 17 This is a schematic diagram of the first piston chamber and the first electric telescopic rod in Example 1; Figure 18 This is a partial cross-sectional view of the first piston chamber and the first electric telescopic rod in Embodiment 1; Figure 19 This is a schematic diagram of the first housing and the second electric telescopic rod in Embodiment 1; Figure 20 This is a schematic diagram of the second housing and the second electric telescopic rod in Embodiment 1; Figure 21 This is a partial cross-sectional view of the first housing and the second electric telescopic rod in Embodiment 1; Figure 22 This is a partial cross-sectional view of the first housing and the second electric telescopic rod in Embodiment 1; Figure 23 This is a schematic diagram of the third housing and the third electric telescopic rod in Example 1; Figure 24 This is a schematic diagram of the fourth housing and the third electric telescopic rod in Example 1; Figure 25 This is a partial cross-sectional view of the third housing and the third electric telescopic rod in Embodiment 1; Figure 26 This is a partial cross-sectional view of the third housing and the third electric telescopic rod in Embodiment 1; Figure 27 This is a schematic diagram of the mounting base, rotating ring, fan, and spring in Example 1; Figure 28 This is a schematic diagram of the check valve in Example 1; Figure 29 This is a cross-sectional view of the check valve in Example 1; Figure 30 This is a partial cross-sectional view of the heat dissipation frame in Example 1; Figure 31 for Figure 30 A magnified view of a section at point A in the middle; Figure 32 for Figure 30 A magnified view of a section at point B. Detailed Implementation

[0031] To further understand the content of this invention, a detailed description of the invention will be provided in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments are merely illustrative and not limiting of the invention.

[0032] Example 1

[0033] Combination Figure 1 As shown, this embodiment constructs a hybrid power supply system for battery modules. This system includes battery modules and photovoltaic modules, and the battery modules can obtain the electrical energy required for charging from the power grid and the photovoltaic modules through corresponding power supply circuits. It is understood that this hybrid power supply circuit is a relatively mature existing technology, and therefore will not be described in detail in this embodiment.

[0034] To address the issues existing in this hybrid power supply system, such as monitoring the health status of battery modules, monitoring the temperature of battery modules, and monitoring the temperature of photovoltaic modules, the following solutions are provided in this embodiment.

[0035] Considering that when the operating temperature of a battery module is low, the movement of the electrolyte inside is slow, which affects the transfer activity of lithium ions between the positive and negative electrodes, thus leading to problems such as decreased discharge performance; while when the operating temperature of a battery module is high, it will cause irreversible damage to the internal separator, and may even lead to battery scrapping or fire accidents.

[0036] Therefore, one of the contributions of this embodiment compared to the prior art is that it provides an energy storage battery thermal management system, such as... Figure 2-14 As shown.

[0037] This embodiment of an energy storage battery thermal management system includes a battery storage device 2100 and a temperature control system. The battery storage device 2100 is used to place battery modules, and the temperature control system is used to provide a temperature-controlled medium. The battery storage device 2100 has a battery module placement cavity 2110 inside for placing the battery modules. A heating channel and a cooling channel, both communicating with the battery module placement cavity 2110, are formed on the side wall of the battery storage device 2100. A first heat transfer component 2121 is provided in the heating channel, and a second heat transfer component 2122 is provided in the cooling channel. The first heat transfer component 2121 and the second heat transfer component 2122 respectively form a first flow channel and a second flow channel for the flow of the temperature-controlled medium. The first heat transfer component 2121 is used to transfer heat from the temperature-controlled medium in the first flow channel to the battery module placement cavity 2110, and the second heat transfer component 2122 is used to transfer heat from the battery module placement cavity 2110 to the temperature-controlled medium in the second flow channel. A temperature sensor is also installed inside the placement cavity 2110 to detect its internal temperature. The temperature sensor sends the detected data to a processing unit. A first inlet 2221 and a first outlet 2131 are formed at the two ends of the first flow channel, and a second inlet 2222 and a second outlet 2132 are formed at the two ends of the second flow channel. The first inlet 2221 and the second inlet 2222, as well as the first outlet 2131 and the second outlet 2132, are connected to the corresponding interfaces of the constant temperature system through different three-way solenoid valves. When the internal temperature of the battery pack placement cavity 2110 is lower than a set threshold, the processing unit controls the action of the corresponding three-way solenoid valve 2140 to realize the circulation of the constant temperature medium between the first flow channel and the constant temperature system. The processing unit also controls the action of the corresponding three-way solenoid valve 2140 to realize the circulation of the constant temperature medium between the second flow channel and the constant temperature system when the internal temperature of the battery pack placement cavity 2110 is higher than the set threshold.

[0038] With the configuration in this embodiment, when the temperature sensor detects that the internal temperature of the battery assembly placement cavity 2110 is lower than a set threshold, i.e., when the battery assembly temperature is too low, the processing unit controls the corresponding three-way solenoid valve 2140 to open, allowing the higher-temperature constant-temperature medium to circulate between the first flow channel and the constant-temperature system. Further explanation: when the constant-temperature medium flows into the first flow channel, the first heat transfer component 2121 functions. That is, during the process of the constant-temperature medium flowing from the first inlet 2221 to the first outlet 2131, the first heat transfer component 2121 can transfer the heat of the constant-temperature medium in the first flow channel to the battery assembly placement cavity 2110. In other words, the heat of the constant-temperature medium in the first flow channel is transferred along the heating channel to the interior of the battery assembly placement cavity 2110, thus better achieving the heating of the battery assembly. When the temperature sensor detects that the internal temperature of the battery assembly placement cavity 2110 is higher than a set threshold, i.e., when the battery assembly temperature is too high, the processing unit controls the corresponding three-way solenoid valve 2140 to open. This allows the lower-temperature constant-temperature medium to circulate between the second flow channel and the constant-temperature system. Further explanation is that when the constant-temperature medium flows into the second flow channel, the second heat transfer component 2122 functions. That is, during the flow of the constant-temperature medium from the second inlet 2222 to the second outlet 2132, the second heat transfer component 2122 can transfer heat from the battery assembly placement cavity 2110 to the constant-temperature medium in the second flow channel. In other words, the heat in the battery assembly placement cavity 2110 is transferred along the cooling channel to the constant-temperature medium in the second flow channel, thus achieving better cooling of the battery assembly. In summary, this embodiment can reasonably utilize the constant-temperature system to control the temperature of the battery assembly, thereby better maintaining the battery assembly at a normal operating temperature and avoiding the impact of extreme weather on the battery assembly's lifespan. Furthermore, when the battery assembly operates at a normal temperature, the battery assembly's electrochemical conversion rate can be maintained at a high level, thus reducing the loss of chemical substances inside the battery assembly and extending its service life.

[0039] Combination Figure 3 , 4As shown, in this embodiment, the battery storage device 2100 includes a battery case 2210, which is housed within a casing 2220. The outer wall of the battery case 2210 and the inner wall of the casing 2220 are spaced apart, forming a cavity 2211 between them. A temperature sensor is disposed within the cavity 2211. The first heat transfer component 2121 and the second heat transfer component 2122 have the same structure. The first heat transfer component 2121 includes a coil 2230 disposed at the casing 2220. The outer end of the coil 2230 is a first outlet 2131 and communicates with the side wall of the casing 2220. A drive is provided at the inner end of the coil 2230. The mechanism 2240 includes a mounting block 2310 coaxially arranged and communicating with the coil 2230. The mounting block 2310 has a mounting cavity 2610, and an impeller coaxially arranged with the mounting cavity 2610 is rotatably arranged in the mounting cavity 2610. A cover plate 2320 is provided at the opening of the mounting cavity 2610, and a first water inlet 2221 is provided on the cover plate 2320. The impeller has a rotating shaft 2470 extending out of the mounting block 2310. A fan 2260 is provided at one end of the rotating shaft 2470 extending out of the mounting block 2310. The coil 2230 is coaxially arranged outside the fan 2260.

[0040] Through the arrangement of the coil 2230, mounting block 2310, cover plate 2320, impeller, and fan 2260 in this embodiment, when the temperature sensor detects that the temperature inside the battery assembly placement cavity 2110 is too low, the lower-temperature constant temperature medium flows from the first inlet 2221 into the mounting block 2310, thereby causing the constant temperature medium to drive the impeller to rotate. This, in turn, causes the impeller to drive the rotating shaft 2470 to rotate, thus enabling the fan 2260 to rotate. This allows the fan 2260 to transfer the heat from the constant temperature medium flowing into the first flow channel to the heating channel, thereby increasing the temperature of the battery assembly. When the battery module temperature rises to a set threshold, the processing unit controls the corresponding three-way solenoid valve 2140 to shut off. Similarly, when the battery module temperature is too high, the fan 2260 can transfer the heat inside the battery module placement cavity 2110 from the cooling channel to the constant temperature medium in the second flow channel, so that the battery module temperature drops to the set threshold, and the processing unit controls the corresponding three-way solenoid valve 2140 to shut off. As described above, this better enables the battery module to operate at a normal temperature, so that the battery module's electrochemical conversion efficiency can be maintained at a high level, thereby extending the battery module's service life.

[0041] Combination Figures 6-11As shown, in this embodiment, the impeller includes an annular plate 2420 whose end face is flush with the opening end face of the mounting cavity 2610, a circular plate 2430 whose end face is slidably attached to the bottom wall of the mounting cavity 2610, and blades 2440 disposed between the annular plate 2420 and the circular plate 2430 and evenly spaced along the circumference of the circular plate 2430. The blades 2440 are arc-shaped. The cover plate 2320 includes a sealing block for sealing the mounting cavity 2610 and a cylindrical block 2410 extending into the middle of the impeller. The two sides of the blades 2440 can respectively abut against the side wall of the mounting cavity 2610 and the side wall of the cylindrical block 2410. The impeller, the outer wall of the cylindrical block 2410 and the side wall of the mounting cavity 2610 slide and seal against each other, forming a joint structure formed by adjacent blades 2440. The driving cavity 2630 formed by the 440 is provided with a water injection cavity 2330 extending into the cylindrical block 2410 on the sealing block. The first water inlet 2221 is the opening end of the water injection cavity 2330. The cylindrical block 2410 is provided with a first guide port 2331 that is inclined and connects the water injection cavity 2330 and the driving cavity 2630. The mounting block 2310 is provided with a second guide port 2311 that connects the driving cavity 2630 and the inner end of the coil 2230. The first guide port 2331 and the second guide port 2311 are arranged opposite to each other. The first water inlet 2221, the water injection cavity 2330, the first guide port 2331, the second guide port 2311, the coil 2230 and the first water outlet 2131 together constitute the first flow channel.

[0042] Through the arrangement of blades 2440, cover plate 2320, drive cavity 2630, first guide port 2331, and second guide port 2311 in this embodiment, the constant temperature medium is injected into the water injection cavity 2330 from the first water inlet 2221, and then flows from the first guide port 2331 to the drive cavity 2630. The first guide port is inclined, so that the drive cavity 2630 is subjected to circumferential thrust, which causes the impeller to rotate in the mounting cavity 2610, thereby enabling the impeller to drive the rotating shaft 2470 to rotate, thus realizing the rotation of the fan 2260. During the rotation of the impeller, the drive chamber 2630 rotates to the second guide port 2311, and the constant temperature medium in the drive chamber 2630 can flow from the second guide port 2311 to the coil 2230, and then flow into the constant temperature system from the first outlet 2131 along the coil 2230, thus realizing the circulation of the constant temperature medium between the first flow channel and the constant temperature system. As mentioned above, controlling the flow rate of the constant temperature medium into the first flow channel, that is, controlling the speed of the impeller, and then controlling the speed of the fan 2260, thus realizing the rapid heating or cooling of the battery assembly.

[0043] In this embodiment, a protrusion is raised in the middle of the side surface of the mounting block 2310 away from the cover plate 2320. The protrusion is provided with a rotating cavity 2620 that communicates with the mounting cavity 2610. A rotating block 2450 is provided on the circular plate 2430 that extends into the rotating cavity 2620. A rotating shaft 2470 is coaxially mounted on the rotating block 2450. A bearing 2460 is provided between the side wall of the rotating block 2450 and the inner wall of the rotating cavity 2620.

[0044] The arrangement of the rotating cavity 2620, rotating block 2450, and bearing 2460 in this embodiment allows the rotating block 2450 to rotate within the rotating cavity 2620, which in turn facilitates the impeller to drive the fan 2260 to rotate.

[0045] Combination Figures 11-14 As shown, in this embodiment, both the inner wall of the mounting block 2310 and the outer wall of the cylindrical block 2410 are provided with sealing mechanisms for sliding sealing of the blade 2440. A sliding cavity 2510 is provided in the inner wall of the mounting block 2310 or the outer wall of the cylindrical block 2410. A slidable slider 2710 is provided in the sliding cavity 2510. The end face of the slider 2710 facing the opening end of the sliding cavity 2510 is arc-shaped. When the slider 2710 moves to its maximum stroke towards the opening end of the sliding cavity 2510, one side wall edge of the slider 2710 coincides with the corresponding side wall edge of the opening end of the sliding cavity 2510, and the other side wall edge extends out of the sliding cavity 2510. Both sides of the blade 2440 can abut against the side wall of the slider 2710 extending out of the sliding cavity 2710 and form a sealing surface.

[0046] With the sealing mechanism configured in this embodiment, when the slider 2710 moves to its maximum stroke toward the opening end of the sliding cavity 2510, the side wall of the blade 2440 abuts against the side wall of the slider 2710 extending out of the sliding cavity 2510. The side wall of the blade 2440 and the slider 2710 abut against each other form a sealing surface. Thus, before the impeller rotates, the slider 2710 can keep the drive cavity 2630 blocked. When the constant temperature medium is injected into the water injection cavity 2330, the constant temperature medium flows into the drive cavity 2630 from the first guide port 2331. This allows the drive cavity 2630 at the corresponding first guide port 2331 to be filled with the constant temperature medium, thereby driving the impeller to rotate. When the impeller starts to rotate, the side wall of the blade 2440 can move along the arc surface of the slider 2710. When the impeller rotates at high speed, the slider 2710 is kept retracted into the sliding cavity 2510 under the action of the impeller rotation, so it does not affect the rotation of the impeller.

[0047] The purpose of the sealing mechanism is to ensure that the constant temperature medium drives the impeller to rotate, and to prevent the constant temperature medium from flowing directly to the second guide port 2311 due to gaps between the blade 2440 and the cylindrical block 2410 and the mounting cavity 2610. In addition, since the slider 2710 extends out of the sliding cavity 2510, the slider 2710 can suppress the reverse rotation of the impeller, that is, ensure the unidirectional rotation of the impeller in the mounting cavity 2610. Therefore, this measure can control the rotation direction of the impeller. So when heating the battery pack, the fan 2260 blows towards the cavity 2211, that is, quickly heats the battery pack to the set threshold. When cooling the battery pack, the fan 2260 blows away from the cavity 2211, that is, quickly cools the battery pack to the set threshold.

[0048] In this embodiment, a first spring 2720 is provided between the slider 2710 and the bottom wall of the sliding cavity 2510 to keep the slider 2710 moving toward the opening of the sliding cavity 2510.

[0049] By setting the first spring 2720 in this embodiment, before the impeller rotates, the slider 2710 is kept at its maximum stroke toward the opening end of the sliding cavity 2510 under the action of the first spring 2720, that is, a seal is formed between the side wall of the slider 2710 and the side wall of the blade 2440.

[0050] In this embodiment, a corresponding groove 2520 is provided on the side wall of the sliding cavity 2510, and a strip groove 2810 is provided through the slider 2710. Two limiting blocks 2910 are provided in the strip groove 2810, which can extend out of the openings at both ends of the strip groove 2810 respectively. A second spring 2920 is provided between the two limiting blocks 2910. The ends of the limiting blocks 2910 extending out of the strip groove 2810 extend into the corresponding groove 2520.

[0051] With the arrangement of the slide groove 2520, the strip groove 2810, the limiting block 2910, and the second spring 2920 in this embodiment, the limiting block 2910 slides within the slide groove, thus ensuring the stability of the slider 2710 sliding within the slide cavity 2510. The second spring 2920 allows the operator to press the limiting block 2910 into the strip groove 2810, thereby installing the slider 2710 within the slide cavity 2510, which is more convenient.

[0052] In this embodiment, at least two sets of sealing mechanisms are provided on the inner wall of the mounting block 2310 and the outer wall of the cylindrical block 2410.

[0053] The purpose of setting the number of sealing mechanisms in this embodiment is to ensure that when the impeller rotates any number of revolutions, there are at least two sets of sealing mechanisms that allow the sidewall of the slider 2710 to seal against the sidewall of the blade 2440, thereby ensuring that the constant temperature medium drives the impeller to rotate.

[0054] In this embodiment, filter screens 2150 are provided on both sides of the housing 2220, and the filter screens 2150 are provided with water inlets that connect to the first water inlet 2221 or the second water inlet 2222.

[0055] The filter 2150 in this embodiment is designed to better prevent damage to the first heat transfer component 2121 and the second heat transfer component 2122 due to external forces, while providing air vents for heating and cooling channels.

[0056] In this embodiment, heat dissipation fins 2250 are uniformly arranged in the cavity 2211, and the heat dissipation fins 2250 are spaced apart and form a heating channel or a cooling channel.

[0057] By setting the heat dissipation fins 2250 in this embodiment, the internal temperature of the battery module placement cavity 2110 is preferably transferred to the heat dissipation fins 2250, which facilitates the first heat transfer component 2121 or the second heat transfer component 2122 to heat up or cool down the inside of the battery module placement cavity 2110, thereby achieving constant temperature control of the battery module.

[0058] In a specific application of the energy storage battery thermal management system of this embodiment, when the temperature sensor detects that the internal temperature of the battery assembly placement cavity 2110 is lower than a set threshold, that is, when the battery assembly temperature is too low, the processing unit controls the corresponding three-way solenoid valve 2140 to open, so that the higher temperature constant temperature medium circulates between the first flow channel and the constant temperature system. To further explain, the higher temperature constant temperature medium is injected into the water injection cavity 2330 from the first water inlet 2221, and then flows from the first guide port 2331 to the drive cavity 2630. The first guide port 2331 is inclined, so that the drive cavity 2630 is subjected to thrust, that is, the impeller rotates within the mounting cavity 2610, and then the impeller drives the rotating shaft 2470 to rotate, so that the fan 2260 rotates, thereby quickly transferring the heat of the constant temperature medium flowing into the first flow channel to the heat dissipation fins 2250, thereby raising the temperature of the battery assembly to the set threshold.

[0059] When the temperature sensor detects that the internal temperature of the battery pack placement cavity 2110 is higher than the set threshold, that is, when the battery pack temperature is too high, the processing unit controls the corresponding three-way solenoid valve 2140 to open, so that the lower temperature constant temperature medium circulates between the second flow channel and the constant temperature system. To further explain, the lower temperature constant temperature medium is injected into the water injection cavity 2330 from the second water inlet 2222, and then flows from the first guide port 2331 to the drive cavity 2630. The first guide port 2331 is inclined, so that the drive cavity 2630 is pushed, which causes the impeller to rotate in the mounting cavity 2610. The impeller drives the rotating shaft 2470 to rotate, which causes the fan 2260 to rotate, thereby quickly transferring the heat on the heat dissipation fins 2250 to the constant temperature medium flowing into the second flow channel, thereby cooling the battery pack to the set threshold.

[0060] In summary, this embodiment can effectively utilize a constant temperature system to control the temperature of the battery module, thereby better enabling the battery module to operate at a normal temperature and avoiding the impact of extreme weather on the battery module's lifespan. In addition, when the battery module operates at a normal temperature, the electrochemical conversion efficiency of the battery module can be maintained at a high level, thus reducing the loss of chemical substances inside the battery module and extending its service life.

[0061] In this embodiment, the constant temperature system may also include, for example, a constant temperature medium supply device. The constant temperature medium supply device may be, for example, an existing temperature control system (such as water heating), to achieve better acquisition of the circulating constant temperature medium. Therefore, the energy storage battery thermal management system of this embodiment has strong applicability.

[0062] Furthermore, although there are existing devices that cool photovoltaic modules from the outside, the temperature of the photovoltaic modules is generated inside them. The high temperature still needs to be transferred through the photovoltaic modules to the heat dissipation and cooling devices. During this process, the photovoltaic modules will still be working in a high-temperature environment, which will still result in a high temperature of the photovoltaic modules, thereby affecting the working efficiency of the photovoltaic modules and shortening their service life.

[0063] Considering that excessively high internal temperature of photovoltaic modules can affect their conversion efficiency and lifespan, another contribution of this embodiment to the prior art is to provide a hybrid power supply device, especially a technical solution for internally controlling the temperature of photovoltaic modules.

[0064] like Figure 15-32 As shown, this embodiment provides a hybrid power supply device, which includes a photovoltaic module 1100. The photovoltaic module 1100 is formed by encapsulating a photovoltaic glass 1110, a first photovoltaic encapsulant film 1120, a solar cell 1130, a second photovoltaic encapsulant film 1140, and a photovoltaic backsheet 1150.

[0065] The photovoltaic module 1100 also includes a heat dissipation frame 1160 disposed between the second photovoltaic encapsulant film 1140 and the photovoltaic backsheet 1150;

[0066] The heat dissipation frame 1160 includes multiple horizontal heat dissipation pipes that are spaced apart from each other and arranged in parallel and are connected to the outside of the photovoltaic module 1100, and multiple vertical heat dissipation pipes that are spaced apart from each other and arranged in parallel and are connected to the outside of the photovoltaic module 1100. The horizontal heat dissipation pipes and the vertical heat dissipation pipes are interconnected.

[0067] In this embodiment, the hybrid power supply device includes an energy storage device and a photovoltaic module 1100 electrically connected to the energy storage device; the energy storage device is electrically connected to the power grid and the electrical equipment respectively; the power grid and the photovoltaic module 1100 are used to provide power to the energy storage device, and the energy storage device is used to provide power to the electrical equipment.

[0068] By setting the heat dissipation frame 1160 in this embodiment, the heat dissipation frame 1160 can directly transfer heat from the inside of the photovoltaic module 1100 to the outside of the photovoltaic module 1100, which can prevent the high temperature generated in the photovoltaic module 1100 from being transferred inside the photovoltaic module 1100, thereby effectively preventing the photovoltaic module 1100 from reducing its working efficiency and lifespan due to high temperature.

[0069] The heat dissipation frame 1160 is designed to allow for the direct cooling of the photovoltaic module 1100 by introducing a heat-absorbing medium into it. This results in a significant cooling effect. Furthermore, the heat-absorbing medium introduced from the outside will not contaminate the photovoltaic module 1100 or cause damage to it due to the isolation provided by the heat dissipation frame 1160, thus protecting the interior of the photovoltaic module 1100.

[0070] In this embodiment, the horizontal heat dissipation pipe includes a first heat dissipation pipe 1210, a second heat dissipation pipe 1220 and a third heat dissipation pipe 1230 arranged in sequence, and the vertical heat dissipation pipe includes a fourth heat dissipation pipe 1240, a fifth heat dissipation pipe 1250 and a sixth heat dissipation pipe 1260 arranged in sequence. A first piston chamber 1270 is provided at the intersection of the second heat dissipation pipe 1220 and the fifth heat dissipation pipe 1250, which is connected to both the second heat dissipation pipe 1220 and the fifth heat dissipation pipe 1250. A first electric telescopic rod 1271 is provided in the first piston chamber 1270, which is connected to the photovoltaic module 1100 and is used to cooperate with the first piston chamber 1270 to realize the absorption and discharge of airflow by the first piston chamber 1270.

[0071] In this embodiment, the photovoltaic module 1100 can also directly provide power to the first electric telescopic pole 1271;

[0072] Through the arrangement of the first piston chamber 1270 in this embodiment, when the photovoltaic module 1100 starts working and generates electrical energy, the photovoltaic module 1100 provides electrical energy to the first electric telescopic rod 1271, thereby enabling the first electric telescopic rod 1271 to start working. The drive shaft of the first electric telescopic rod 1271 is sealed to the first piston chamber 1270. Therefore, when the output shaft of the first electric telescopic rod 1271 moves towards the first piston chamber 1270, the airflow within the first piston chamber 1270 is squeezed out under the pressure of the output shaft. When the output shaft moves outward toward the first piston chamber 1270, the airflow is drawn inward by the first piston chamber 1270. The absorption and discharge of airflow by the first piston chamber 1270 promotes better airflow within the heat dissipation frame 1160. When the first piston chamber 1270 draws in air, the low-temperature air outside the photovoltaic module 1100 enters the horizontal and vertical heat dissipation pipes and absorbs the heat inside the photovoltaic module 1100. When the first piston chamber 1270 exhausts air outward, the high-temperature air in the heat dissipation frame 1160 is discharged from the horizontal and vertical heat dissipation pipes, thereby achieving the effect of cooling the inside of the photovoltaic module 1100.

[0073] In this embodiment, the first heat sink 1210 is provided with two second piston chambers 1710, which are both connected to the first heat sink 1210 and respectively connected to the fourth heat sink 1240 and the sixth heat sink 1260. The two second piston chambers 1710 are respectively located at the intersection of the first heat sink 1210 and the fourth heat sink 1240 and the first heat sink 1210 and the sixth heat sink 1260.

[0074] The third heat sink 1230 is provided with two third piston chambers 1a10, which are both connected to the third heat sink 1230 and respectively connected to the fourth heat sink 1240 and the sixth heat sink 1260. The two third piston chambers 1a10 are respectively located at the intersection of the third heat sink 1230 and the fourth heat sink 1240 and the third heat sink 1230 and the sixth heat sink 1260.

[0075] The second piston chamber 1710 and the third piston chamber 1a10 are respectively provided with a second electric telescopic rod 1280 and a third electric telescopic rod 1290, which are connected to the photovoltaic module 1100 and are used to realize the absorption and discharge of airflow in the second piston chamber 1710 and the third piston chamber 1a10. A first housing 1281 is provided at the intersection of the first heat dissipation pipe 1210 and the fourth heat dissipation pipe 1240, and a second housing 1282 is provided at the intersection of the first heat dissipation pipe 1210 and the sixth heat dissipation pipe 1260. The second piston chamber 1710 is formed inside the first housing 1281 and the second housing 1282. The second electric telescopic rod 1280 is provided at the bottom of the first housing 1281 and the second housing 1282, and the output shaft of the second electric telescopic rod 1280 extends into the second piston chamber 1710 and can move along the extension direction of the second piston chamber 1710.

[0076] The first housing 1281 and the second housing 1282 are each provided with two first vent holes 1720 and two second vent holes 1510. The first vent holes 1720 are located on the side walls of the first housing 1281 and the second housing 1282 near the second heat dissipation pipe 1220 and the fifth heat dissipation pipe 1250, and the second vent holes 1510 are located on the side walls of the first housing 1281 and the second housing 1282 away from the second heat dissipation pipe 1220 and the fifth heat dissipation pipe 1250. The two first vent holes 1720 are respectively connected to the second piston. The cavity 1710 is connected to the second heat dissipation pipe 1220, the second piston cavity 1710, and the fifth heat dissipation pipe 1250; two second vent holes 1510 located on the first housing 1281 are respectively connected to the second piston cavity 1710 and the first heat dissipation pipe 1210, and the second piston cavity 1710 and the fourth heat dissipation pipe 1240; two second vent holes 1510 located on the second housing 1282 are respectively connected to the second piston cavity 1710 and the first heat dissipation pipe 1210, and the second piston cavity 1710 and the sixth heat dissipation pipe 1260;

[0077] Both the first vent 1720 and the second vent 1510 are provided with a first valve for cooperating with the second electric telescopic rod 1280 to block the first vent 1720 and the second vent 1510. When the second electric telescopic rod 1280 draws air into the second piston chamber 1710, the first vent 1720 opens and the second vent 1510 closes. When the second electric telescopic rod 1280 exhausts air from the second piston chamber 1710, the first vent 1720 closes and the second vent 1510 opens.

[0078] A third housing 1291 is provided at the intersection of the third heat dissipation pipe 1230 and the fourth heat dissipation pipe 1240, and a fourth housing 1292 is provided at the intersection of the third heat dissipation pipe 1230 and the sixth heat dissipation pipe 1260. A third piston chamber 1a10 is formed inside the third housing 1291 and the fourth housing 1292. A third electric telescopic rod 1290 is provided at the bottom of the third housing 1291 and the fourth housing 1292, and the output shaft of the third electric telescopic rod 1290 extends into the third piston chamber 1a10 and can move along the extension direction of the third piston chamber 1a10.

[0079] Both the third housing 1291 and the fourth housing 1292 are provided with two third vent holes 1a20 and two fourth vent holes 1910. The third vent holes 1a20 are located on the side walls of the third housing 1291 and the fourth housing 1292 near the second heat dissipation pipe 1220 and the fifth heat dissipation pipe 1250, and the fourth vent holes 1910 are located on the side walls of the third housing 1291 and the fourth housing 1292 away from the second heat dissipation pipe 1220 and the fifth heat dissipation pipe 1250. The two third vent holes 1a20 are respectively connected to the third piston. Cavity 1a10 is connected to the second heat dissipation pipe 1220, the third piston cavity 1a10, and the fifth heat dissipation pipe 1250; two fourth vent holes 1910 located on the third housing 1291 are respectively connected to the third piston cavity 1a10 and the third heat dissipation pipe 1230 and the third piston cavity 1a10 and the fourth heat dissipation pipe 1240; two fourth vent holes 1910 located on the fourth housing 1292 are respectively connected to the third piston cavity 1a10 and the third heat dissipation pipe 1230 and the third piston cavity 1a10 and the sixth heat dissipation pipe 1260;

[0080] Both the third vent 1a20 and the fourth vent 1910 are equipped with a second valve for cooperating with the third electric telescopic rod 1290 to seal the third vent 1a20 and the fourth vent 1910. When the third electric telescopic rod 1290 draws air into the third piston chamber 1a10, the third vent 1a20 opens and the fourth vent 1910 closes. When the third electric telescopic rod 1290 exhausts air from the third piston chamber 1a10, the third vent 1a20 closes and the fourth vent 1910 opens.

[0081] In this embodiment, the photovoltaic module 1100 provides electrical energy to the second electric telescopic rod 1280 and the third electric telescopic rod 1290; the first electric telescopic rod 1271 moves in the opposite direction to the second electric telescopic rod 1280 and the third electric telescopic rod 1290.

[0082] When the output shaft of the first electric telescopic rod 1271 moves toward the inside of the first piston chamber 1270, the output shafts of the second electric telescopic rod 1280 and the third electric telescopic rod 1290 move toward the outside of the second piston chamber 1710 and the third piston chamber 1a10, respectively. That is, when the first piston chamber 1270 exhausts air, the second piston chamber 1710 and the third piston chamber 1a10 draw in air. When the output shaft of the first electric telescopic rod 1271 moves toward the outside of the first piston chamber 1270, the output shafts of the second electric telescopic rod 1280 and the third electric telescopic rod 1290 move toward the inside of the second piston chamber 1710 and the third piston chamber 1a10, respectively. That is, when the first piston chamber 1270 draws in air, the second piston chamber 1710 and the third piston chamber 1a10 exhaust air.

[0083] When the second piston chamber 1710 draws in air, that is, when the output shaft of the second electric telescopic rod 1280 moves outward from the second piston chamber 1710, the first vent holes 1720 on the first housing 1281 and the second housing 1282 open under the action of the first valve, and the second vent holes 1510 on the first housing 1281 and the second housing 1282 close under the action of the first valve, so that the second piston chamber 1710 can absorb hot air from the heat dissipation frame 1160 through the first vent holes 1720; when the second piston chamber 1710 exhausts air... That is, the output shaft of the second electric telescopic rod 1280 moves toward the second piston chamber 1710. At this time, the first vent hole 1720 on the first housing 1281 and the second housing 1282 is closed under the action of the first valve, and the second vent hole 1510 on the first housing 1281 and the second housing 1282 is opened under the action of the first valve. This allows the second piston chamber 1710 to discharge the hot air absorbed in the second piston chamber 1710 to the outside through the second vent hole 1510, thereby allowing the hot air to be discharged outside the photovoltaic module 1100.

[0084] When the third piston chamber 1a10 draws in air, that is, when the output shaft of the third electric telescopic rod 1290 moves outward from the third piston chamber 1a10, the third vent hole 1a20 on the third housing 1291 and the fourth housing 1292 opens under the action of the second valve, and at the same time, the fourth vent hole 1910 on the third housing 1291 and the fourth housing 1292 closes under the action of the second valve, so that the third piston chamber 1a10 can absorb the hot air in the heat dissipation frame 1160 through the third vent hole 1a20; when the third piston chamber 1a10 exhausts air... When the output shaft of the third electric telescopic rod 1290 moves toward the third piston chamber 1a10, the third vent 1a20 on the third housing 1291 and the fourth housing 1292 is closed by the action of the second valve, and the fourth vent 1910 on the third housing 1291 and the fourth housing 1292 is opened by the action of the second valve, so that the third piston chamber 1a10 can discharge the hot air absorbed in the third piston chamber 1a10 to the outside through the fourth vent 1910, so that the hot air can be discharged outside the photovoltaic module 1100.

[0085] The purpose of the above structure is that when the first piston chamber 1270 draws cold air into the heat dissipation frame 1160 through the second heat dissipation pipe 1220 and the fifth heat dissipation pipe 1250, the cold air absorbs the heat generated inside the photovoltaic module 1100 within the heat dissipation frame 1160. At this time, the second piston chamber 1710 and the third piston chamber 1a10 discharge the hot air absorbed from the heat dissipation frame 1160 to the outside. When the first piston chamber 1270 discharges the hot air to the outside, the second piston chamber 1710 and the third piston chamber 1a10 absorb the hot air discharged from the first piston chamber 1270. This process is repeated, so that the heat generated inside the photovoltaic module 1100 is absorbed and discharged through the cooperation of the first piston chamber 1270 and the second piston chamber 1710.

[0086] In this embodiment, the first valve includes a first rotating groove 1520 on the first housing 1281 and the second housing 1282, located below the first vent hole 1720. A first active plate 1521 is rotatably disposed within the first rotating groove 1520, with one end extending into the second piston chamber 1710 to cooperate with the second electric telescopic rod 1280 and the other end extending out of the first housing 1281 and the second housing 1282. A first driven plate 1522 is disposed on the outside of both the first housing 1281 and the second housing 1282, with one end hinged to the other end of the first active plate 1521. A first sealing plate 1523 is hinged to the other end of the first driven plate 1522. Two first limiting blocks 1524, with an L-shaped cross-section, are symmetrically disposed on the first housing 1281 and the second housing 1282, into which the first sealing plate 1523 extends vertically. The first sealing plate 1523 can move along the extending direction of the first limiting block 1524 and seal the first vent hole 1720.

[0087] The second valve includes a second rotating groove 1920 located on the third housing 1291 and the fourth housing 1292 and below the third vent hole 1a20. A second active plate 1921 is rotatably disposed within the second rotating groove 1920, with one end extending into the third piston chamber 1a10 to cooperate with the third electric telescopic rod 1290 and the other end extending out of the third housing 1291 and the fourth housing 1292. A second driven plate 1922 is disposed on the outside of both the third housing 1291 and the fourth housing 1292, with one end hinged to the other end of the second active plate 1921. A third sealing plate 1923 is hinged to the other end of the second driven plate 1922. Two second limiting blocks 1924, with an L-shaped cross-section, are symmetrically disposed on the third housing 1291 and the fourth housing 1292, into which the third sealing plate 1923 extends vertically. The third sealing plate 1923 can move along the extending direction of the second limiting blocks 1924 and seal the third vent hole 1a20.

[0088] The output shaft of the second electric telescopic rod 1280 is provided with a first extrusion groove 1730 into which one end of the first active plate 1521 extends. The first extrusion groove 1730 moves outward toward the second piston chamber 1710 to extrude the first active plate 1521 and drive the first active plate 1521 to rotate so as to block the first vent hole 1720 by the first sealing plate 1523. The first extrusion groove 1730 moves inward toward the second piston chamber 1710 to extrude the first active plate 1521 and drive the first active plate 1521 to rotate so as to open the first vent hole 1720 by the first sealing plate 1523.

[0089] The output shaft of the third electric telescopic rod 1290 is provided with a third extrusion groove 1a30 into which one end of the second active plate 1921 extends. The third extrusion groove 1a30 moves outward toward the third piston chamber 1a10 to extrude the second active plate 1921 and drive the second active plate 1921 to rotate so as to block the third vent hole 1a20 by the third sealing plate 1923. The third extrusion groove 1a30 moves inward toward the third piston chamber 1a10 to extrude the second active plate 1921 and drive the second active plate 1921 to rotate so as to open the third vent hole 1a20 by the third sealing plate 1923.

[0090] The side walls of the first housing 1281 and the second housing 1282 are provided with a first movable groove 1740 extending vertically and communicating with the second vent hole 1510; both the upper and lower ends of the first movable groove 1740 are connected to the second piston chamber 1710; a second sealing plate 1741 that can move along the extension direction of the first movable groove 1740 is provided in the first movable groove 1740; a fifth vent hole 1742 communicating with the second vent hole 1510 is provided on the second sealing plate 1741; the second sealing plate 1741 is used to cooperate with the second electric telescopic rod 1280 to seal the second vent hole 1510;

[0091] The side walls of the third housing 1291 and the fourth housing 1292 are provided with a second movable groove 1a40 extending vertically and communicating with the fourth vent hole 1910; both the upper and lower ends of the second movable groove 1a40 are connected to the third piston chamber 1a10; a fourth sealing plate 1a41 that can move along the extension direction of the second movable groove 1a40 is provided in the second movable groove 1a40; a sixth vent hole 1a42 that communicates with the fourth vent hole 1910 is provided on the fourth sealing plate 1a41; the fourth sealing plate 1a41 is used to cooperate with the third electric telescopic rod 1290 to seal the fourth vent hole 1910;

[0092] The upper end of the second sealing plate 1741 is provided with a first pressing plate 1743 that passes through the first movable groove 1740 and extends into the second piston chamber 1710, and the lower end of the second sealing plate 1741 is provided with a second pressing plate 1810 that passes through the first movable groove 1740 and extends into the second piston chamber 1710; the output shaft of the second electric telescopic rod 1280 is provided with a second pressing groove 1820 into which the second pressing plate 1810 extends; the first pressing plate 1743 is used to press against the end of the output shaft of the second electric telescopic rod 1280 to realize the sealing of the second vent hole 1510 by the second sealing plate 1741, and the second pressing plate 1810 is used to press against the second pressing groove 1820 to realize the connection between the second vent hole 1510 and the third vent hole 1a20;

[0093] The upper end of the fourth sealing plate 1a41 is provided with a third extrusion plate 1a43 that passes through the second movable groove 1a40 and extends into the third piston chamber 1a10. The lower end of the fourth sealing plate 1a41 is provided with a fourth extrusion plate 1b10 that passes through the second movable groove 1a40 and extends into the third piston chamber 1a10. The output shaft of the third electric telescopic rod 1290 is provided with a fourth extrusion groove 1b20 for the fourth extrusion plate 1b10 to extend into. The third extrusion plate 1a43 is used to press against the end of the output shaft of the third electric telescopic rod 1290 to achieve the sealing of the fourth vent hole 1910 by the fourth sealing plate 1a41. The fourth extrusion plate 1b10 is used to press against the fourth extrusion groove 1b20 to achieve the connection between the fourth vent hole 1910 and the sixth vent hole 1a42.

[0094] With the construction of the first valve in this embodiment, when the output shaft of the second electric telescopic rod 1280 moves toward the second piston chamber 1710, it is the exhaust stage. At this time, the first extrusion groove 1730 moves toward the second piston chamber 1710. During the movement of the first extrusion groove 1730, the side wall of the first extrusion groove 1730 near the outer end of the second piston chamber 1710 will contact one end of the first active plate 1521 and extrude pressure on one end of the first active plate 1521 as the first extrusion groove 1730 continues to move, thereby causing the first active plate 1521 to rotate. Thus, driven by the other end of the first active plate 1521, the first driven plate 1522 drives the first sealing plate 1523 toward the second electric telescopic rod 1280. The output shaft of the 0 moves in the opposite direction to the direction of movement, thereby opening the first vent 1720. During the movement of the output shaft of the second electric telescopic rod 1280, the end of the output shaft of the second electric telescopic rod 1280 will contact the first pressing plate 1743 and press the first pressing plate 1743 as the output shaft of the second electric telescopic rod 1280 continues to move, causing the first pressing plate 1743 to move toward the inner end of the second piston chamber 1710, thereby causing the second sealing plate 1741 to move toward the inner end of the second piston chamber 1710, thereby causing the third vent 1a20 to move away from the second vent 1510, thereby achieving the sealing of the second vent 1510 under the action of the second sealing plate 1741.

[0095] When the output shaft of the second electric telescopic rod 1280 moves outward toward the second piston chamber 1710, it is the intake stage. At this time, the first extrusion groove 1730 moves outward toward the second piston chamber 1710. During the movement of the first extrusion groove 1730, the side wall of the first extrusion groove 1730 away from the outer end of the second piston chamber 1710 will contact one end of the first active plate 1521 and extrude pressure on one end of the first active plate 1521 as the first extrusion groove 1730 continues to move, thereby causing the first active plate 1521 to rotate, thereby causing the first sealing plate 1523 to move in the opposite direction, thus achieving... The first vent 1720 is blocked; at this time, the second extrusion groove 1820 moves outward toward the second piston cavity 1710, and the side wall of the second extrusion groove 1820 away from the outer end of the second piston cavity 1710 will contact the second extrusion plate 1810 and extrude the second extrusion plate 1810 as the second extrusion groove 1820 continues to move, thereby causing the second sealing plate 1741 to move in the opposite direction, thereby causing the third vent 1a20 to move toward the second vent 1510, thereby connecting the second vent 1510 and the third vent 1a20, thereby opening the second vent 1510;

[0096] With the construction of the second valve in this embodiment, when the output shaft of the third electric telescopic rod 1290 moves toward the third piston chamber 1a10, it is the exhaust stage. At this time, the third extrusion groove 1a30 moves toward the third piston chamber 1a10. During the movement of the third extrusion groove 1a30, the side wall of the third extrusion groove 1a30 near the outer end of the third piston chamber 1a10 will contact one end of the second active plate 1921 and extrude pressure on one end of the second active plate 1921 as the third extrusion groove 1a30 continues to move, thereby causing the second active plate 1921 to rotate. Thus, driven by the other end of the second active plate 1921, the second driven plate 1922 drives the third sealing plate 1923 toward the third electric telescopic rod 1290. The output shaft of 0 moves in the opposite direction to the direction of movement, thereby opening the third vent 1a20. During the movement of the output shaft of the third electric telescopic rod 1290, the end of the output shaft of the third electric telescopic rod 1290 will contact the third extrusion plate 1a43 and extrude the third extrusion plate 1a43 as the output shaft of the third electric telescopic rod 1290 continues to move, causing the third extrusion plate 1a43 to move toward the inner end of the third piston chamber 1a10, thereby causing the fourth sealing plate 1a41 to move toward the inner end of the third piston chamber 1a10, thereby causing the sixth vent 1a42 to move away from the fourth vent 1910, thereby achieving the sealing of the fourth vent 1910 under the action of the fourth sealing plate 1a41.

[0097] When the output shaft of the third electric telescopic rod 1290 moves outward toward the third piston chamber 1a10, it is the intake stage. At this time, the third extrusion groove 1a30 moves outward toward the third piston chamber 1a10. During the movement of the third extrusion groove 1a30, the side wall of the third extrusion groove 1a30 away from the outer end of the third piston chamber 1a10 will contact one end of the second active plate 1921 and extrude pressure on one end of the second active plate 1921 as the third extrusion groove 1a30 continues to move, thereby causing the second active plate 1921 to rotate, thereby causing the third sealing plate 1923 to move in the opposite direction, thus achieving... The third vent 1a20 is blocked; at this time, the fourth extrusion groove 1b20 moves outward toward the third piston cavity 1a10, and the side wall of the fourth extrusion groove 1b20 away from the outer end of the third piston cavity 1a10 will contact the fourth extrusion plate 1b10 and extrude the fourth extrusion plate 1b10 as the fourth extrusion groove 1b20 continues to move, thereby causing the fourth sealing plate 1a41 to move in the opposite direction, thereby causing the sixth vent 1a42 to move toward the fourth vent 1910, thereby connecting the fourth vent 1910 with the sixth vent 1a42, thereby opening the fourth vent 1910.

[0098] In this embodiment, the cross-sections of both the horizontal and vertical heat dissipation pipes are square and the angle between the pipe wall and the photovoltaic glass 1110 is 45°. Both the horizontal and vertical heat dissipation pipes are provided with multiple mounting seats 1c10. A rotating ring 1c20 is rotatably provided on the inner side wall of the mounting seat 1c10, and a fan 1c30 is mounted on the rotating ring 1c20.

[0099] The horizontal and vertical heat dissipation pipes are equipped with baffles 1e10, and the baffles 1e10 are provided with through holes 1e11; the mounting base 1c10 can move along the length direction of the horizontal and vertical heat dissipation pipes; the mounting base 1c10 is connected to the baffles 1e10 by a spring 1c40, and the spring 1c40 is used to maintain the tendency of the mounting base 1c10 to move away from the baffles 1e10.

[0100] In this embodiment, both the horizontal and vertical heat pipes are made of glass.

[0101] By setting up horizontal and vertical heat dissipation pipes in this embodiment, when light shines into the photovoltaic module 1100, it is refracted under the action of the horizontal and vertical heat dissipation pipes, so that the light can be reused in the photovoltaic module 1100, thereby improving the working efficiency of the photovoltaic module 1100.

[0102] By configuring the fan 1c30, the airflow in the first piston chamber 1270, the second piston chamber 1710, and the third piston chamber 1a10 during the intake and exhaust processes causes the fan 1c30 to rotate. This effectively promotes airflow within the heat dissipation frame 1160, ensuring that the cool air entering the heat dissipation frame 1160 is evenly distributed within it. This allows for uniform absorption of heat from the photovoltaic module 1100, preventing excessively high local temperatures within the photovoltaic module 1100 and improving heat dissipation efficiency.

[0103] The first and second valves are designed so that the sizes of the first vent 1720, second vent 1510, third vent 1a20, and fourth vent 1910 gradually change when they are opened and closed. This causes the gas pressure in the first piston chamber 1270, second piston chamber 1710, and third piston chamber 1a10 to gradually increase during intake and exhaust, thereby increasing the thrust of the gas on the fan 1c30. This increases the speed of the fan 1c30, further promoting airflow inside the heat sink frame 1160, improving heat dissipation efficiency, and ultimately increasing the working efficiency and lifespan of the photovoltaic module 1100.

[0104] With the arrangement of baffle 1e10, spring 1c40, and mounting base 1c10, during the intake and exhaust processes of the first piston chamber 1270, the second piston chamber 1710, and the third piston chamber 1a10, the fan 1c30 will drive the mounting base 1c10 to move along the length of the transverse and longitudinal heat dissipation pipes under the elastic action of the spring 1c40, thereby further promoting the airflow within the heat dissipation frame 1160 and improving the heat dissipation efficiency inside the photovoltaic module 1100.

[0105] In this embodiment, one-way valves 1d10 are provided at both ends of the second heat sink 1220 and the fifth heat sink 1250 to allow airflow to enter the second heat sink 1220 and the fifth heat sink 1250.

[0106] The purpose of the one-way valve 1d10 in this embodiment is to ensure that the low-temperature air from the outside can only enter the heat dissipation frame 1160 through the two ends of the second heat dissipation pipe 1220 and the fifth heat dissipation pipe 1250, while the high-temperature air inside the heat dissipation frame 1160 can only be discharged through the second piston chamber 1710 and the third piston chamber 1a10, so that the air can circulate along a certain route, thereby achieving the purpose of heat dissipation.

[0107] First, low-temperature air is drawn into the heat dissipation frame 1160 by the first piston chamber 1270. When the first piston chamber 1270 exhausts air, the one-way valve 1d10 closes. At this time, the gas in the heat dissipation frame 1160 diffuses within the heat dissipation frame 1160 under the action of the first piston chamber 1270, so that the low-temperature air is evenly distributed within the heat dissipation frame 1160 and does not move outside the heat dissipation frame 1160. This allows for better heat dissipation of the photovoltaic module 1100, thereby improving the heat dissipation efficiency of the photovoltaic module 1100.

[0108] Considering the monitoring of the health status of battery modules, and the fact that the health status of battery modules can be reflected in the heat generated during operation, this embodiment further contributes to the prior art by providing a method for assessing the health status of energy storage devices.

[0109] The method for assessing the health status of an energy storage device according to this embodiment includes the following steps:

[0110] Step S1: Collect the battery's operating parameters, and then construct the diagnostic input sequence S;

[0111] Step S2: Construct a health status assessment model and process the diagnostic input sequence S;

[0112] Step S3: Output the battery health status.

[0113] Through the above steps S1-S3, the health status of the battery based on the health status assessment model can be better evaluated. Therefore, the advantages of the algorithm can be better utilized to achieve a better evaluation of the battery's health status.

[0114] Step S1 in this embodiment specifically includes the following steps.

[0115] Step S11: Obtain the battery's operating status M, operating voltage U, operating current I, operating duration T, and internal temperature K. o And ambient temperature (K);

[0116] In this step, M=1 when the battery is in a discharging state and M=0 when the battery is in a charging state.

[0117] Step S12: Set the operating voltage U, operating current I, operating time T, and internal temperature K. o The ambient temperature K is then dimensionlessly reduced to obtain the dimensionless operating voltage U. * Operating current I * Working hours T * Internal temperature (K) o* and ambient temperature K * ;

[0118] Step S13: Construct the diagnostic input sequence S, S = [M, U * ,I * ,T * ,K o* ,K * ].

[0119] Step S11 allows for a better comprehensive consideration of the battery's operating state, operating voltage, operating current, operating time, internal temperature, and ambient temperature, thereby enabling the construction of a better correlation sequence between internal temperature, battery operating state, and external environment. Steps S12 and S13 achieve better removal of dimensions, thus facilitating the processing of the health status assessment model.

[0120] In this embodiment, the operating state M, operating voltage U, operating current I, operating duration T, and internal temperature K are specified. o The operating voltage U and operating current I can be obtained through existing BMS systems. These refer to the instantaneous data at the time of acquisition. The operating duration T refers to the time from the moment the battery module starts operating to the moment of acquisition. The internal temperature K... o This refers to the temperature of the battery cell in the battery module. The cell temperature can be used as a parameter to evaluate the heat generation of the battery module.

[0121] Since the battery assembly in this embodiment is disposed within the battery assembly placement cavity 2110, the measurement data from the temperature sensor can be directly used as the ambient temperature K. * .

[0122] In this embodiment, in step S12,

[0123]

[0124]

[0125]

[0126]

[0127]

[0128] Among them, U max I max T max K o ax and K max These are the maximum operating voltage, maximum operating current, maximum operating time, maximum internal temperature, and maximum ambient temperature.

[0129] The above methods can effectively achieve the acquisition of dimensionless parameters. Among them, U... max Imax and T max The operating time, K, can be calculated using the rated voltage (distinguishing between discharge and charge states), rated current (distinguishing between discharge and charge states), and rated power (distinguishing between discharge and charge states) and nominal capacity of the battery module. o max and K max It can be manually set based on experience, for example, 60℃ and 40℃ respectively.

[0130] The health status assessment model in step S2 of this embodiment is constructed through the following steps.

[0131] Step S21: Construct a health status assessment model;

[0132] Step S22: Construct a sample set P and train the health status assessment model.

[0133] Through the above methods, a better health status assessment model can be constructed.

[0134] In step S21 of this embodiment, a health status assessment model is constructed based on a neural network. The health status assessment model has an input layer, a fully connected layer, and an output layer. The input layer is used to input the diagnostic input sequence S, the fully connected layer is used to process the diagnostic input sequence S, and the output layer is used to receive the processing result of the fully connected layer.

[0135] The fully connected layer can have N layers connected sequentially, with each subsequent fully connected layer using the output of the previous fully connected layer as its input; for the i-th fully connected layer among the N layers, its output sequence y i With input sequence x i The following relationship exists between them.

[0136] y i =ω i x i +b i ;

[0137] Where, ω i b is the weight term of the i-th fully connected layer. i For the bias term of the i-th fully connected layer, the weight term ω i and bias term b i Obtained through step S22.

[0138] Through the above methods, we can make better use of existing mature neural network algorithms to construct a health status assessment model.

[0139] In step S22 of this embodiment, the sample set P has multiple sample sequences, which are collected from batteries in different operating states and with different cycle counts; each sample sequence is tagged with the battery's capacity decay value Q.

[0140] For the j-th sample, its label Q i The calculation formula is as follows: Q ia Let Q be the actual fully charged amount of the battery corresponding to the j-th sample in its current state. ic The nominal fully charged charge of the battery corresponding to the j-th sample;

[0141] For the j-th sample, its sample sequence is: M j , and These represent the working state, dimensionless working voltage, dimensionless working current, dimensionless working duration, dimensionless internal temperature, and dimensionless ambient temperature of the j-th sample, respectively.

[0142] Through the above, a better sample database can be obtained. In particular, since the capacity decay value Q is used as the label, the final output of the health status assessment model can be a specific numerical value, rather than the classification data output by the classifier. This makes it easier to determine the threshold and handle early warnings.

[0143] Based on the hybrid power supply system constructed above, this embodiment also proposes a battery management system, including:

[0144] Temperature detection unit, which is used to detect the operating temperature of the battery;

[0145] Temperature control unit, which is used to control the operating temperature of the battery;

[0146] An evaluation unit is used to assess the health status of the battery;

[0147] A warning unit is used to provide early warnings about the battery's health status; and

[0148] The main control unit is used to determine whether the temperature detected by the temperature detection unit exceeds the set temperature threshold, and to control the temperature control unit to act when the battery operating temperature exceeds the set temperature threshold; the main control unit is also used to receive the evaluation results of the evaluation unit, and to control the warning unit to act when the evaluation results exceed the set health threshold.

[0149] Through the above methods, it is possible to better control the operating temperature of the battery, as well as assess and warn of the battery's health status.

[0150] In this embodiment, the temperature control unit may include the battery storage device 2100 and the constant temperature system described above, the temperature detection unit may include the temperature sensor described above, and the main control unit may include a processing unit for receiving data detected by the temperature sensor. The processing unit is used to control the operation of the corresponding three-way solenoid valve 2140 to realize the circulation of the constant temperature medium between the first flow channel and the constant temperature system when the internal temperature of the battery assembly placement cavity 2110 is lower than a set threshold. The processing unit is also used to control the operation of the corresponding three-way solenoid valve 2140 to realize the circulation of the constant temperature medium between the second flow channel and the constant temperature system when the internal temperature of the battery assembly placement cavity 2110 is higher than the set threshold.

[0151] Through the above methods, the operating temperature of the battery module can be better controlled, thereby ensuring that the battery module can operate within the optimal temperature range, and thus better guaranteeing the performance and lifespan of the battery module.

[0152] In this embodiment, the temperature control unit may further include the aforementioned heat dissipation frame 1160, and the temperature detection unit may further include a photovoltaic temperature sensor disposed at the heat dissipation frame 1160. The photovoltaic temperature sensor is used to detect the internal temperature of the photovoltaic module 1100. The main control unit may further include a control module for receiving the data detected by the photovoltaic temperature sensor. The control module is used to control the first electric telescopic rod 1271 to move when the temperature data detected by the photovoltaic temperature sensor exceeds a set photovoltaic module temperature threshold. Therefore, temperature control at the photovoltaic module can be better achieved.

[0153] Furthermore, the control module can also be used to control the first electric telescopic rod 1271, the second electric telescopic rod 1280, and the third electric telescopic rod 1290 to operate in coordination when the temperature data detected by the photovoltaic temperature sensor exceeds the set photovoltaic module temperature threshold. Therefore, it can achieve better temperature control at the photovoltaic module.

[0154] The evaluation unit in this embodiment includes a data acquisition module and a processing module. The data acquisition module is used to acquire the battery's operating parameters, and the processing module is used to process the battery's operating parameters to obtain the battery's health status. Therefore, it can better achieve the evaluation of the battery's health status. In this embodiment, the data acquisition module is used to acquire the battery's operating parameters from the temperature sensor and the BMS system.

[0155] In addition, the processing module is used to implement the data input, data processing, and data output functions of the health status assessment model. Therefore, it can better realize the functions of the health status assessment model.

[0156] Furthermore, this embodiment also provides a management method for an intelligent connected energy storage device in the aforementioned hybrid power supply system, which includes temperature management and health status management. Temperature management includes temperature management of the battery modules and the photovoltaic modules, while health status management includes management of the health status of the battery modules. This enables better management of both the temperature and health status of the battery modules and the temperature of the photovoltaic modules.

[0157] In this embodiment, the temperature of the battery pack is detected by a temperature sensor within the battery storage device 2100. A processing unit receives the data detected by the temperature sensor and controls the temperature control system to operate when the detected data exceeds a set threshold, thereby achieving temperature control of the battery pack. Therefore, it can effectively manage the temperature of the battery pack.

[0158] In this embodiment, the internal temperature of the photovoltaic module 1100 is detected by a photovoltaic temperature sensor, and the control module receives the data detected by the photovoltaic temperature sensor. When the temperature data detected by the photovoltaic temperature sensor exceeds the set photovoltaic module temperature threshold, the control module controls the heat dissipation frame to operate, thereby achieving temperature control of the photovoltaic module 1100. Therefore, it can achieve better temperature management of the photovoltaic module.

[0159] In this embodiment, the management of the battery module's health status includes an evaluation unit for assessing the battery's health status and an early warning unit for issuing warnings about the battery's health status. A main control unit receives the evaluation results from the evaluation unit and controls the early warning unit to activate when the evaluation results exceed a set health threshold. This enables better management of the battery module's health status.

[0160] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A battery management system, comprising: a temperature detection unit configured to detect an operating temperature of a battery; a temperature control unit configured to control the operating temperature of the battery; an evaluation unit configured to evaluate a state of health of the battery; a pre-warning unit configured to pre-warn the state of health of the battery; and a master control unit configured to determine whether the temperature detected by the temperature detection unit exceeds a set temperature threshold, and to control the temperature control unit to act when the operating temperature of the battery exceeds the set temperature threshold, and to receive an evaluation result of the evaluation unit, and to control the pre-warning unit to act when the evaluation result exceeds a set health threshold; the temperature control unit comprises a battery storage device (2100) and a constant temperature system, the battery storage device (2100) is configured to place a battery assembly, and the constant temperature system is configured to provide a constant temperature medium; a battery assembly placement cavity (2110) for placing the battery assembly is formed inside the battery storage device (2100), and a heating passage and a cooling passage that are both in communication with the battery assembly placement cavity (2110) are formed at a side wall of the battery storage device (2100); a first heat transfer assembly (2121) is arranged at the heating passage, and a second heat transfer assembly (2122) is arranged at the cooling passage; a first flow channel and a second flow channel for the flow of the constant temperature medium are respectively formed inside the first heat transfer assembly (2121) and the second heat transfer assembly (2122), the first heat transfer assembly (2121) is configured to transfer heat of the constant temperature medium in the first flow channel to the battery assembly placement cavity (2110), and the second heat transfer assembly (2122) is configured to transfer heat in the battery assembly placement cavity (2110) to the constant temperature medium in the second flow channel; the temperature detection unit comprises a temperature sensor arranged in the battery assembly placement cavity (2110), the temperature sensor is configured to detect an internal temperature of the battery assembly placement cavity (2110), and the master control unit comprises a processing unit configured to receive data detected by the temperature sensor; two ends of the first flow channel respectively form a first water inlet (2221) and a first water outlet (2131), two ends of the second flow channel respectively form a second water inlet (2222) and a second water outlet (2132), and the first water inlet (2221) and the second water inlet (2222) and the first water outlet (2131) and the second water outlet (2132) are respectively connected to corresponding interfaces of the constant temperature system through different three-way electromagnetic valves (2140); the processing unit is configured to control the action of the corresponding three-way electromagnetic valve (2140) to realize the circulation of the constant temperature medium between the first flow channel and the constant temperature system when the internal temperature of the battery assembly placement cavity (2110) is lower than a set threshold, and the processing unit is also configured to control the action of the corresponding three-way electromagnetic valve (2140) to realize the circulation of the constant temperature medium between the second flow channel and the constant temperature system when the internal temperature of the battery assembly placement cavity (2110) is higher than the set threshold. ​ The battery storage device (2100) comprises a battery box (2210), the battery box (2210) is covered in a shell (2220), the outer wall of the battery box (2210) is spaced apart from the inner wall of the shell (2220) and a cavity (2211) is formed between them, and a temperature sensor is arranged in the cavity (2211); the first heat transfer assembly (2121) and the second heat transfer assembly (2122) are the same structure, the first heat transfer assembly (2121) comprises a coil pipe (2230) arranged at the shell (2220), the outer end of the coil pipe (2230) is a first water outlet (2131) and is communicated to the side wall of the shell (2220), the inner end of the coil pipe (2230) is provided with a driving mechanism (2240), the driving mechanism (2240) comprises a mounting block (2310) coaxially arranged with the coil pipe (2230) and communicated with the coil pipe (2230), the mounting block (2310) is provided with a mounting cavity (2610) therein, the mounting cavity (2610) is rotatably provided with an impeller coaxially arranged with the mounting cavity (2610), the mounting cavity (2610) is provided with a cover plate (2320) at the opening, and a first water inlet (2221) is arranged on the cover plate (2320); the impeller is provided with a rotating shaft (2470) extending out of the mounting block (2310), one end of the rotating shaft (2470) extending out of the mounting block (2310) is provided with a fan (2260), and the coil pipe (2230) is coaxially arranged outside the fan (2260); The impeller comprises a ring plate (2420) with an end face flush with an opening end of the mounting cavity (2610), a circular plate (2430) with an end face slidingly attached to a bottom wall of the mounting cavity (2610), and blades (2440) arranged between the ring plate (2420) and the circular plate (2430) and uniformly spaced along a circumference of the circular plate (2430), the blades (2440) being in the shape of arc-shaped sheets; the cover plate (2320) comprises a blocking block for blocking the mounting cavity (2610) and a cylindrical block (2410) extending into a middle portion of the impeller, two sides of the blades (2440) being capable of abutting against side walls of the mounting cavity (2610) and the cylindrical block (2410) respectively, the impeller, an outer wall of the cylindrical block (2410) and the side walls of the mounting cavity (2610) slidingly sealing each other to jointly form a driving cavity (2630) composed of adjacent blades (2440), the blocking block being provided with a water injection cavity (2330) extending into the cylindrical block (2410), the first water inlet (2221) being an opening end of the water injection cavity (2330), the cylindrical block (2410) being provided with a first flow guide opening (2331) obliquely arranged and communicating the water injection cavity (2330) and the driving cavity (2630), the mounting block (2310) being provided with a second flow guide opening (2311) communicating the driving cavity (2630) and an inner end of the coil pipe (2230), the first flow guide opening (2331) and the second flow guide opening (2311) being oppositely arranged; the first water inlet (2221), the water injection cavity (2330), the first flow guide opening (2331), the second flow guide opening (2311), the coil pipe (2230) and the first water outlet (2131) jointly form a first flow channel.

2. The battery management system of claim 1, wherein: The temperature control unit further comprises a heat dissipation framework (1160) arranged at the photovoltaic module (1100), the heat dissipation framework (1160) comprising a plurality of transverse heat dissipation pipes arranged in parallel and spaced apart from each other and communicating with the outside of the photovoltaic module (1100), and a plurality of longitudinal heat dissipation pipes arranged in parallel and spaced apart from each other and communicating with the outside of the photovoltaic module (1100), the transverse heat dissipation pipes and the longitudinal heat dissipation pipes being in communication with each other.

3. The battery management system of claim 2, wherein: The photovoltaic module (1100) is packaged by a photovoltaic glass (1110), a first photovoltaic adhesive film (1120), a cell sheet (1130), a second photovoltaic adhesive film (1140) and a photovoltaic back plate (1150), and the heat dissipation framework (1160) is arranged between the second photovoltaic adhesive film (1140) and the photovoltaic back plate (1150).

4. The battery management system of claim 3, wherein: The transverse heat dissipation pipes comprise a first heat dissipation pipe (1210), a second heat dissipation pipe (1220) and a third heat dissipation pipe (1230) arranged in sequence, and the longitudinal heat dissipation pipes comprise a fourth heat dissipation pipe (1240), a fifth heat dissipation pipe (1250) and a sixth heat dissipation pipe (1260) arranged in sequence, a first piston cavity (1270) in communication with the second heat dissipation pipe (1220) and the fifth heat dissipation pipe (1250) being arranged at an intersection of the second heat dissipation pipe (1220) and the fifth heat dissipation pipe (1250); The first piston cavity (1270) is provided with a first electric telescopic rod (1271) connected with the photovoltaic module (1100) and used for cooperating with the first piston cavity (1270) to realize the suction and discharge of the first piston cavity (1270) to the airflow; The temperature detection unit comprises a photovoltaic temperature sensor arranged at the heat dissipation framework (1160), and the photovoltaic temperature sensor is used for detecting the internal temperature of the photovoltaic module (1100); and the main control unit comprises a control module used for receiving the detection data of the photovoltaic temperature sensor. The control module is used for controlling the first electric telescopic rod (1271) to act when the temperature data detected by the photovoltaic temperature sensor exceeds the set photovoltaic module temperature threshold.

5. The battery management system of claim 4, wherein: The first heat dissipation pipe (1210) is provided with two second piston cavities (1710) which are both in communication with the first heat dissipation pipe (1210) and are respectively in communication with the fourth heat dissipation pipe (1240) and the sixth heat dissipation pipe (1260), and the two second piston cavities (1710) are respectively arranged at the intersection of the first heat dissipation pipe (1210) and the fourth heat dissipation pipe (1240) and the intersection of the first heat dissipation pipe (1210) and the sixth heat dissipation pipe (1260); The third heat dissipation pipe (1230) is provided with two third piston cavities (1a10) which are both in communication with the third heat dissipation pipe (1230) and are respectively in communication with the fourth heat dissipation pipe (1240) and the sixth heat dissipation pipe (1260), and the two third piston cavities (1a10) are respectively arranged at the intersection of the third heat dissipation pipe (1230) and the fourth heat dissipation pipe (1240) and the intersection of the third heat dissipation pipe (1230) and the sixth heat dissipation pipe (1260); The second piston cavities (1710) and the third piston cavities (1a10) are respectively provided with a second electric telescopic rod (1280) and a third electric telescopic rod (1290) connected with the photovoltaic module (1100) and used for realizing the suction and discharge of the second piston cavities (1710) and the third piston cavities (1a10) to the airflow; The control module is used for controlling the first electric telescopic rod (1271), the second electric telescopic rod (1280) and the third electric telescopic rod (1290) to act cooperatively when the temperature data detected by the photovoltaic temperature sensor exceeds the set photovoltaic module temperature threshold.

6. The battery management system of claim 1, wherein: The evaluation unit comprises a data acquisition module and a processing module, the data acquisition module is used for acquiring the operation parameters of the battery, and the processing module is used for processing the operation parameters of the battery to obtain the health state of the battery.

7. The battery management system of claim 6, wherein: The processing module processes the operation parameters of the battery to obtain the health state of the battery by constructing a health state evaluation model.

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