Thermoelectric separation top liquid cooling module and energy storage system

Abstract

The utility model relates to the technical field of batteries, and particularly discloses a thermoelectric separation top liquid cooling module and an energy storage system.The liquid cooling module is used for being arranged on a battery pack in a battery pack, the battery pack comprises a plurality of closely-attached batteries located in the same straight line direction, and the liquid cooling module comprises a cold row plate and a heat dissipation plate, the cold row plate is arranged at the top of the battery and extends along the arrangement direction of the battery, and a first flow channel for circulating flow of cooling liquid is arranged in the cold row plate; the positive and negative electrode connecting piece is used for being connected with a battery tab; and a plurality of heat conduction assemblies are arranged along the arrangement direction of the batteries, one end of each heat conduction assembly is connected with the positive and negative electrode connecting piece, and the other end of each heat conduction assembly is connected with the cold row plate. The possibility that the temperature of the end face of the battery rises sharply can be reduced.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a top liquid cooling module and energy storage system with thermal and electrical separation. Background Art

[0002] With the popularity of new energy vehicles, more and more safety accidents are caused by thermal diffusion of vehicle battery packs, which even endanger the lives of people. Thermal diffusion of battery packs is mostly caused by thermal runaway of one or more cells in a local area, which makes the vaporized high-temperature electrolyte in the battery freely spray and diffuse from the explosion-proof valve to other modules in the battery pack, resulting in large-scale thermal runaway in the battery pack, and finally causing the battery pack to catch fire or explode.

[0003] In this regard, in the related art, a Chinese patent with announcement number CN218896774U discloses a battery module liquid cooling plate thermal runaway exhaust flue structure and a battery pack, the technical highlights of which are: including a battery module, an explosion-proof valve and a liquid cooling plate, the battery module having an end face, and the explosion-proof valve is arranged on the end face; the liquid cooling plate is provided with a circulation flow channel, a water inlet and a water outlet; the liquid cooling plate is arranged on one side of the end face of the battery module, and the liquid cooling plate cover is arranged on the explosion-proof valve, and a guide flue is formed between the liquid cooling plate and the end face, and the guide flue is used to communicate with the exhaust channel on the battery pack shell to discharge the thermal runaway ejected material to the external environment.

[0004] In the above structure, the heat-conducting structure is arranged on the end face of the battery module, the guide smoke cooling plate is arranged on the outside of the heat-conducting structure, and a coolant circulates in the guide smoke cooling plate; the heat on the battery module can be transferred to the guide smoke cooling plate through the heat-conducting structure, thereby cooling down. Since the heat-conducting structure is a slender plate-shaped structure, the heat-conducting structure covers the end face of the battery module, and the battery end face is blocked by the heat-conducting structure, and the heat is more likely to accumulate rapidly at the end face, resulting in a rapid rise in temperature at the end face of the battery module and the surface of the heat-conducting structure, which is easy to cause a fire and a safety hazard. Utility Model Content

[0005] In order to reduce the possibility of a sudden increase in temperature at the end surface of the battery, the present application provides a top liquid cooling module and energy storage system with thermal and electrical separation.

[0006] The present application provides a thermoelectrically separated top liquid cooling module and energy storage system adopting the following technical solutions:

[0007] A thermoelectrically separated top liquid cooling module and energy storage system, which is used to be arranged on a battery pack in a battery pack, wherein the battery pack includes a plurality of tightly fitted batteries located in the same straight line direction, and the liquid cooling module includes:

[0008] A cooling plate is arranged on the top of the battery and extends along the battery arrangement direction, wherein a first flow channel for circulating coolant is arranged in the cooling plate;

[0009] Positive and negative electrode connectors, used to connect to the battery tabs;

[0010] A plurality of heat-conducting components are arranged along the battery arrangement direction, and one end of each heat-conducting component is connected to the positive and negative electrode connectors, and the other end is connected to the cold row plate.

[0011] By adopting the above technical solution, coolant circulates in the first flow channel in the cold plate, and the heat-conducting component can transfer the heat on the battery ear to the cold plate, thereby cooling the battery. Since multiple groups of heat-conducting components are provided, while ensuring the cooling effect on the battery, part of the heat at the battery end can be dissipated through the air, thereby reducing the possibility of rapid temperature rise at the battery end, which helps to improve the safety of the battery.

[0012] Optionally, the heat-conducting assembly includes a heat-conducting gasket and a heat-conducting piece, the heat-conducting gasket is attached to the surface of the positive and negative electrode connectors, one end of the heat-conducting piece is connected to the heat-conducting gasket, and the other end is connected to the cold row plate.

[0013] By adopting the above technical solution, the positive and negative electrode connectors are arranged on the battery ears, and the thermal conductive gaskets are attached to the surfaces of the positive and negative electrode connectors. Therefore, the arrangement of the thermal conductive gaskets can increase the contact area between the thermal conductive parts and the battery ears, thereby accelerating the heat transfer and helping to enhance the cooling effect.

[0014] Optionally, the heat conductive component includes a heat conductive pipe, and the heat conductive pipe includes a connected gasket surface connecting section and a row plate top surface connecting section, the gasket surface connecting section is detachably connected to the surface of the thermal conductive gasket, and the row plate top surface connecting section is connected to the top surface of the cold row plate.

[0015] By adopting the above technical solution, the heat pipe is respectively against the top wall of the heat conductive gasket and the cold row plate, which helps to ensure the contact area between the heat conductive pipe and the heat conduction component, thereby ensuring the heat exchange effect.

[0016] Optionally, the heat conductive component includes a heat conductive pipe, and the heat conductive pipe includes a connected gasket surface connecting section and a row plate side connecting section, the gasket surface connecting section is detachably connected to the thermal conductive gasket surface, and the row plate side connecting section is connected to the side of the cold row plate.

[0017] By adopting the above technical solution, the heat pipe is respectively against the side wall of the heat conductive gasket and the cold row plate, which helps to ensure the contact area between the heat conductive pipe and the heat conduction component, thereby ensuring the heat exchange effect.

[0018] Optionally, a cavity is provided in the heat conducting member, and heat conducting liquid is stored in the heat conducting member.

[0019] By adopting the above technical solution, the thermal conductivity of the thermal conductive liquid is strong, which helps to accelerate the transfer of heat and thus improve the cooling effect on the battery.

[0020] Optionally, an explosion-proof component is also included, which includes an explosion-proof valve and a pressure relief valve. The explosion-proof valve is arranged at one end where the battery pole ear is located, and the pressure relief valve is arranged on the battery pack. An exhaust duct is opened on the cold plate along its own length direction, the outlet of the explosion-proof valve is connected to the exhaust duct, and the outlet of the exhaust duct is connected to the pressure relief valve.

[0021] By adopting the above technical solution, a large amount of vaporized electrolyte gas will be generated before the battery thermal runaway, and then the explosion-proof valve will explode, and the electrolyte gas will enter the exhaust duct. When the pressure in the exhaust duct is greater than the external pressure, the pressure relief valve will open to discharge the high-temperature combustible gas or flame in the exhaust duct into the external environment, thereby reducing the heat generated before the battery thermal runaway occurs, reducing the possibility of thermal runaway, and ensuring safety.

[0022] Optionally, a flexible support pad is provided between the cold row plate and the battery pack, and the support pad is provided with perforations, and the perforations are respectively connected to the outlet of the explosion-proof valve and the exhaust duct of the cold row plate.

[0023] By adopting the above technical solution, the support pad is flexibly configured, so that a better sealing effect can be achieved, thereby reducing the possibility of high-temperature gas being discharged from the gap between the radiator plate and the battery pack, and avoiding the discharged high-temperature gas from damaging other battery packs.

[0024] Optionally, it includes a battery pack and a battery group arranged in the battery pack, and the battery group is provided in plurality. It also includes a liquid cooling module as described in any of the above items, and the liquid cooling module is provided in plurality corresponding to the battery group.

[0025] By adopting the above technical solution, each liquid cooling module can cool the corresponding battery pack, and each battery pack is provided with an explosion-proof component. When the heat generation rate of one battery pack is higher than the heat dissipation rate, the high-temperature gas will be discharged to the outside of the battery pack along the exhaust duct and the pressure relief valve, thereby avoiding the discharged high-temperature gas from damaging other battery packs in the battery pack and helping to reduce losses.

[0026] Optionally, a buffer pad is provided between two adjacent batteries.

[0027] By adopting the above technical solution, after the battery expands due to heat, the buffer pad can be deformed, thereby avoiding mutual squeezing between adjacent batteries and ensuring normal use of the battery.

[0028] Optionally, it also includes a liquid cooling system located at the bottom of the battery pack, and the liquid cooling system is connected to the first flow channel.

[0029] By adopting the above technical solution, the liquid cooling system can cool the bottom and top of the battery pack at the same time, which helps to enhance the cooling effect on the battery pack.

[0030] In summary, the present application includes at least one of the following beneficial technical effects:

[0031] 1. Coolant circulates in the cold plate, and the heat-conducting components can transfer the heat on the battery tabs to the cold plate. Therefore, the coolant in the cold plate can exchange heat with the battery tabs through the heat-conducting components, thereby cooling the battery pack. Since multiple groups of heat-conducting components are arranged at intervals, the ends of the battery pack can be prevented from being excessively blocked, resulting in heat accumulation and a sharp increase in temperature.

[0032] 2. When the heat generation rate of one battery pack is greater than the heat dissipation rate, the high-temperature gas in this battery pack will open the explosion-proof valve, and the high-temperature gas will flow into the exhaust duct and then flow out to the outside of the battery pack through the pressure relief valve, thereby reducing the possibility of fire caused by thermal runaway.

[0033] 3. When one of the battery packs discharges the high-temperature gas inside through the exhaust duct, the discharged high-temperature gas is less likely to cause damage to other battery packs inside the battery pack, which helps to reduce losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 is a schematic diagram of the structure of the battery pack in Example 1 of the present application;

[0035] Figure 2 is a schematic diagram of the structure of Example 1 of the present application without the battery pack;

[0036] Figure 3 This is a cross-sectional view of Example 1 of the present application for showing the internal structure of the radiator;

[0037] Figure 4 is a cross-sectional view of Example 1 of the present application for showing an explosion-proof component;

[0038] Figure 5 This is a cross-sectional view of Example 2 of the present application for showing the internal structure of the radiator.

[0039] Figure numerals: 1. battery pack; 2. battery; 21. battery tab; 3. cold plate; 31. first flow channel; 32. exhaust duct; 4. positive and negative electrode connectors; 5. heat-conducting component; 51. thermally conductive gasket; 52. heat-conducting pipe; 521. gasket surface connecting section; 522. plate top surface connecting section; 523. plate side connecting section; 6. explosion-proof component; 61. explosion-proof valve; 62. pressure relief valve; 7. support pad; 71. perforation; 8. buffer pad; 9. liquid cooling plate; 10. connecting pipe. DETAILED DESCRIPTION

[0040] The following is combined with Figure 1-5 This application is described in further detail.

[0041] The embodiment of the present application discloses a top liquid cooling module with thermal and electrical separation.

[0042] Example 1

[0043] Reference Figure 1 , and the application of the battery pack in the battery pack is used as an example for explanation. A plurality of battery packs are arranged in the battery pack 1, and the battery packs include a plurality of tightly fitted batteries 2 located in the same straight line direction; a battery pole ear 21 is arranged at the top of the battery 2, and there are two battery pole ears 21, one of which corresponds to the positive electrode of the battery 2, and the other corresponds to the negative electrode of the battery 2.

[0044] Reference Figure 2 and Figure 3 The top liquid cooling module of thermoelectric separation includes a cold row plate 3, positive and negative electrode connectors 4 and a heat conducting component 5. The cold row plate 3 is arranged on the top of the battery pack, and the cold row plate 3 is arranged along the arrangement direction of the battery 2, and the cold row plate 3 is located between the battery ears 21 on both sides of the battery 2. A first flow channel 31 for circulating the coolant is provided in the cold row plate 3, and the first flow channel 31 is arranged along the length direction of the cold row plate 3; in this embodiment, two first flow channels 31 are provided, and they are arranged at intervals, and more may be provided in other embodiments.

[0045] A liquid cooling system for driving the circulation of coolant is also provided on the cold plate 3. A plurality of positive and negative connectors 4 are provided, each of which is fixedly provided between two adjacent batteries 2; one end of the positive and negative connector 4 is fixedly connected to the battery pole ear 21 of the positive electrode of one of the batteries 2, and the other end of the positive and negative connector 4 is fixedly connected to the battery pole ear 21 of the negative electrode of the adjacent battery 2, so that a plurality of batteries 2 can be connected into a whole through the positive and negative connectors 4.

[0046] In this embodiment, the positive and negative electrode connectors 4 are battery cell tabs, which can be aluminum tabs or copper tabs.

[0047] There are multiple heat-conducting components 5 corresponding to the positive and negative connectors 4, and they are evenly spaced and distributed along the arrangement direction of the battery 2; each heat-conducting component 5 corresponds to a positive and negative connector 4. The heat-conducting component 5 includes a heat-conducting gasket 51 and a heat-conducting member. The heat-conducting gasket 51 is an insulating heat-conducting pad with a high thermal conductivity. The heat-conducting pad preferably uses a silicon cloth heat-conducting pad with a thermal conductivity greater than 2w / (m·k), and can also use an open-pored alumina ceramic sheet. The heat-conducting gasket 51 is attached to the top surface of the positive and negative connectors 4. The heat-conducting member is a heat-conducting pipe 52, which is a sintered copper pipe; the heat-conducting pipe 52 includes a gasket surface connection section 521 and a row plate top surface connection section 522. The gasket surface connection section 521 and the row plate top surface connection section 522 are fixedly connected, and the end of the gasket surface connection section 521 is embedded in the interior of the heat-conducting gasket 51, and the end of the row plate top surface connection section 522 is welded to the top wall of the cold row plate 3. Therefore, the heat on the battery tab 21 can be transferred to the thermal pad 51 through the positive and negative connectors 4, and the thermal pad 51 then transfers the heat to the cold plate 3 through the heat pipe 52. The coolant circulating in the cold plate 3 takes away the heat, thereby achieving cooling of the battery 2. In this embodiment, the coolant is a 50% ethylene glycol solution.

[0048] Among them, the positive electrode of battery 2 is an aluminum foil bus, and the negative electrode is a copper foil bus, both of which are metal materials with high thermal conductivity. Since the inside of the battery tab 21 of the negative electrode of battery 2 is made of copper foil, it has better thermal conductivity. Therefore, installing the heat pipe 52 on the battery tab 21 of the negative electrode of battery 2 helps to enhance the thermal conductivity effect.

[0049] One end of the row plate top surface connection section 522 away from the gasket surface connection section 521 is welded to the top wall of the cold row plate 3, and the gasket surface connection section 521 and the thermal conductive gasket 51 are detachably connected by a plastic buckle; thus, it is convenient to quickly complete the installation of the heat pipe 52.

[0050] In this embodiment, a positive and negative electrode connector 4 is connected to a heat pipe 52, and the heat pipe 52 constitutes a heat conduction channel. In other embodiments, a positive and negative electrode connector 4 can also be connected to multiple heat pipes 52, and the number of heat pipes 52 can be selected according to the heat transfer efficiency.

[0051] Furthermore, a cavity is defined in the heat-conducting pipe 52 , and heat-conducting liquid is stored in the cavity, thereby further enhancing the heat-conducting performance of the heat-conducting pipe 52 .

[0052] Reference Figure 4In addition, the liquid cooling module also includes an explosion-proof component 6, which includes an explosion-proof valve 61 and a pressure relief valve 62. The number of explosion-proof valves 61 is the same as the number of batteries 2, and each explosion-proof valve 61 corresponds to a battery 2; the explosion-proof valve 61 is arranged on the top surface of the corresponding battery 2, and the explosion-proof valve 61 is connected to the inside of the battery 2. The pressure relief valve 62 is arranged on the wall of the battery pack 1, and there are multiple pressure relief valves 62, and the number is the same as the number of battery packs; each pressure relief valve 62 corresponds to a battery pack. The bottom of the cold plate 3 is provided with an exhaust duct 32 along its own length direction. The exhaust duct 32 is located directly above the explosion-proof valve 61, and the exhaust duct 32 is connected to the outlet of the explosion-proof valve 61. One end of the exhaust duct 32 in the length direction is closed, and the other end is connected to a connecting pipe 10, and the end of the connecting pipe 10 away from the exhaust duct 32 is connected to the corresponding pressure relief valve 62.

[0053] Reference Figure 3 In one embodiment, the exhaust duct 32 is located in the middle of the cold row plate 3, and the first flow channel 31 is located on both sides of the exhaust duct 32. The cross-section of the exhaust duct 32 is set in a trapezoidal shape. The cross-section size of the exhaust duct 32 is larger than the cross-section size of the first flow channel 31, so that the explosion-proof performance of the cold row plate 3 is better.

[0054] Reference Figure 5 In another embodiment, the exhaust duct 32 is located in the middle of the cold row plate 3, and the first flow channel 31 is located on both sides of the exhaust duct 32. The cross-section of the exhaust duct 32 is arranged in a long strip shape, and the cross-sectional size of the exhaust duct 32 is close to the cross-sectional size of the first flow channel 31, so that the cooling performance of the cold row plate 3 is better.

[0055] Therefore, when the heat generation rate of the battery 2 is greater than the heat dissipation rate, the internal temperature of the battery 2 increases, the electrolyte vaporizes, and the internal pressure of the battery 2 increases, and the high-temperature gas rushes out from the explosion-proof valve 61 and then flows into the exhaust duct 32; as the pressure in the exhaust duct 32 increases, when the pressure in the exhaust duct 32 is higher than the pressure outside the battery pack 1, the pressure relief valve 62 opens, so that the high-temperature gas in the exhaust duct 32 is discharged from the exhaust valve, thereby avoiding the temperature of the battery 2 from continuing to rise, resulting in thermal runaway.

[0056] Furthermore, in order to enhance the sealing effect between the cold row plate 3 and the top surface of the battery pack, a support pad 7 is bonded between the bottom wall of the cold row plate 3 and the top wall of the battery pack. The support pad 7 is a flexible foam pad made of high temperature resistant EPDM material with double-sided adhesive.

[0057] In one embodiment, the support pad 7 is arranged in a long strip shape, and the support pad 7 is arranged along the arrangement direction of the battery 2; a plurality of perforations 71 are provided on the support pad 7 along its length direction, and a plurality of perforations 71 are provided corresponding to the explosion-proof valve 61, and each perforation 71 is located directly above the corresponding explosion-proof valve 61. The bottom of the perforation 71 is connected to the outlet of the explosion-proof valve 61, and the top of the perforation 71 is connected to the exhaust duct 32 in the cold row plate 3. Therefore, the support pad 7 can make the cold row plate 3 and the top surface of the battery pack fit more closely, thereby reducing the possibility of high-temperature gas leaking from the gap between the cold row plate 3 and the battery pack.

[0058] In another embodiment, a plurality of support pads 7 are arranged along the arrangement direction of the battery 2; the number of the support pads 7 is the same as the number of the explosion-proof valves 61, and each support pad 7 corresponds to an explosion-proof valve 61; each support pad 7 is provided with a through hole 71, and the through hole 71 is respectively connected to the outlet of the explosion-proof valve 61 and the exhaust duct 32 in the cold plate 3.

[0059] The implementation principle of Example 1 is as follows: coolant circulates in the cold plate 3, and the heat generated by the battery 2 during operation is accumulated on the battery ear 21. The heat on the battery ear 21 is transferred to the thermal pad 51 through the positive and negative connectors 4. The thermal pad 51 transfers the heat to the cold plate 3 through the heat pipe 52, and then the coolant flowing in the cold plate 3 takes away the heat, thereby cooling the battery 2 and controlling the temperature of the battery 2 at 15-30°C.

[0060] When the battery 2 operates abnormally and causes the internal temperature to rise, the high-temperature gas in the battery 2 rushes out of the explosion-proof valve 61 and flows into the exhaust duct 32. When the pressure in the exhaust duct 32 is greater than the pressure outside the battery pack 1, the high-temperature gas in the exhaust duct 32 is discharged through the pressure relief valve 62, thereby reducing the heat in the battery 2 and reducing the possibility of fire caused by thermal runaway.

[0061] Example 2

[0062] Reference Figure 5 , the difference between this embodiment and embodiment 1 is that the heat conducting member in this embodiment includes a heat conducting pipe 52, and the heat conducting pipe 52 includes a gasket surface connecting section 521 and a row plate side connecting section 523. The gasket surface connecting section 521 is connected to the top surface of the heat conducting gasket 51 by a snap, the row plate side connecting section 523 and the side wall of the cold row plate 3 are tightly fitted, and the row plate side connecting section 523 and the side wall of the cold row plate 3 are welded and fixed. Therefore, the contact area between the heat conducting pipe 52 and the cold row plate 3 can be increased, the heat exchange efficiency can be improved, and thus the cooling effect on the battery 2 can be enhanced. The angle between the gasket surface connecting section 521 and the row plate side connecting section 523 is 90°, which together constitute an L-shaped structure, so it is easy to process.

[0063] Reference Figure 2 and Figure 4 The present application also discloses an energy storage system, which includes a battery pack 1 and a plurality of battery groups arranged in the battery pack 1. Each battery group includes a plurality of tightly fitted batteries 2 arranged along the same straight line direction, and a buffer pad 8 is arranged between two adjacent batteries 2. The buffer pad 8 is made of aerogel material, and in other embodiments, it can also be made of rubber material. The setting of the buffer pad 8 can provide a certain buffer space for the deformation of the battery 2 after heating, thereby avoiding squeezing between two adjacent batteries 2 and affecting the normal use of the battery 2.

[0064] A liquid cooling system is provided at the bottom of each battery pack. The liquid cooling system includes a liquid cooling plate 9 and a circulation component. The liquid cooling plate 9 is a strip plate. The liquid cooling plate 9 is arranged along the arrangement direction of the battery 2. The liquid cooling plate 9 is fixedly attached to the bottom wall of the battery pack, and a second flow channel for circulating the coolant is provided in the liquid cooling plate 9. The circulation component is used to drive the coolant to circulate. Furthermore, the second flow channel in the liquid cooling plate 9 is connected to the first flow channel 31 in the cold row plate 3, so that after the circulation component is started, the coolant can circulate in both the liquid cooling plate 9 and the cold row plate 3, thereby cooling both ends of the battery pack and enhancing the cooling effect.

[0065] The present invention dissipates heat from the battery lugs through the cold row plate. According to test data, under the same working conditions, the maximum temperature in the entire battery pack is less than 33.5°C, which is better than the 43°C of products with only bottom liquid cooling. In the thermal runaway scenario, the battery thermal runaway time is significantly extended, at least more than 28 minutes. If the fire warning is activated, the battery can avoid thermal runaway.

[0066] The above are optional embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A thermoelectrically separated top liquid cooling module, used for being arranged on a battery pack in a battery pack (1), the battery pack comprising a plurality of tightly fitted batteries (2) located in the same straight line direction, characterized in that: The liquid cooling module includes: A cooling plate (3) is arranged on the top of the battery (2) and extends along the arrangement direction of the battery (2), wherein a first flow channel (31) for circulating a coolant is arranged in the cooling plate (3); Positive and negative electrode connectors (4) for connecting to battery tabs (21); A plurality of heat-conducting components (5) are arranged along the arrangement direction of the batteries (2), and each of the heat-conducting components (5) has one end connected to the positive and negative electrode connectors (4) and the other end connected to the cold row plate (3).

2. A top liquid cooling module with thermal and electrical separation according to claim 1, characterized in that: The heat-conducting assembly (5) comprises a heat-conducting gasket (51) and a heat-conducting piece, wherein the heat-conducting gasket (51) is attached to the surface of the positive and negative electrode connectors (4), one end of the heat-conducting piece is connected to the heat-conducting gasket (51), and the other end is connected to the cold row plate (3).

3. A top liquid cooling module with thermal and electrical separation according to claim 2, characterized in that: The heat conducting member comprises a heat conducting pipe (52), the heat conducting pipe (52) comprising a connected gasket surface connection section (521) and a row plate top surface connection section (522), the gasket surface connection section (521) being detachably connected to the surface of the heat conducting gasket (51), and the row plate top surface connection section (522) being connected to the top surface of the cold row plate (3).

4. A top liquid cooling module with thermal and electrical separation according to claim 2, characterized in that: The heat conducting member comprises a heat conducting pipe (52), the heat conducting pipe (52) comprising a connected gasket surface connection section (521) and a row plate side connection section (523), the gasket surface connection section (521) being detachably connected to the surface of the heat conducting gasket (51), and the row plate side connection section (523) being connected to the side of the cold row plate (3).

5. A top liquid cooling module with thermal and electrical separation according to claim 2, characterized in that: A cavity is provided in the heat conducting member, and heat conducting liquid is stored in the heat conducting member.

6. A top liquid cooling module with thermal and electrical separation according to claim 1, characterized in that: The battery pack (1) further comprises an explosion-proof component (6), wherein the explosion-proof component (6) comprises an explosion-proof valve (61) and a pressure relief valve (62), wherein the explosion-proof valve (61) is arranged at one end where the battery pole ear (21) is located, and the pressure relief valve (62) is arranged on the battery pack (1), and an exhaust duct (32) is provided on the cold plate (3) along its length direction, wherein the outlet of the explosion-proof valve (61) is connected to the exhaust duct (32), and the outlet of the exhaust duct (32) is connected to the pressure relief valve (62).

7. A top liquid cooling module with thermal and electrical separation according to claim 6, characterized in that: A flexible support pad (7) is provided between the cold plate (3) and the battery pack, and a perforation (71) is provided on the support pad (7), and the perforation (71) is respectively connected to the outlet of the explosion-proof valve (61) and the exhaust duct (32) of the cold plate (3).

8. An energy storage system, comprising a battery pack (1) and a battery group arranged in the battery pack (1), wherein a plurality of battery groups are arranged, characterized in that: It also includes a liquid cooling module as described in any one of claims 1-7, and a plurality of the liquid cooling modules are provided corresponding to the battery pack.

9. An energy storage system according to claim 8, characterized in that: A buffer pad (8) is provided between two adjacent batteries (2).

10. An energy storage system according to claim 8, characterized in that: It also includes a liquid cooling system located at the bottom of the battery pack, the liquid cooling system being in communication with the first flow channel (31).

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