Liquid-cooled battery

Abstract

The liquid-cooled battery comprises a box body, a sealing element and a battery cell, the box body comprises a bottom plate, a side plate and a connecting block, the side plate is connected with the bottom plate, the connecting block is connected with the side plate, the connecting block is located in the middle or the upper portion of the side plate, the connecting block, the side plate and the bottom plate jointly form a cavity, and the sealing element is arranged in the cavity. A cooling liquid inlet is formed in the side plate, and a cooling liquid outlet is also formed in the side plate; the connecting block is provided with a battery grid, the battery cell can be placed at the battery grid, the battery cell is provided with an electrode, the electrode is located at the upper end of the battery cell, so that at least part of the battery cell is located in the cavity, and the electrode is located above the battery grid; the lower part of the battery cell and the box body jointly form a cooling cavity, and a sealing piece is arranged between the battery cell and the connecting block. The liquid-cooled battery has the effects of improving the heat exchange rate of the liquid-cooled battery and optimizing the production cost of the liquid-cooled battery.

Description

Technical Field

[0001] The present application relates to the field of battery cooling technology, and in particular to a liquid-cooled battery. Background Art

[0002] The authorization announcement number of the prior art is CN220086179U, and its name is a battery module liquid cooling structure and battery box, including a water-cooled plate, a thermally conductive adhesive layer and a battery module, wherein the thermally conductive adhesive layer is coated on the water-cooled plate; the battery module is arranged on the thermally conductive adhesive layer; and further comprising a diaphragm, which is laid between the thermally conductive adhesive layer and the battery module, and the diaphragm has thermal conductivity. For example, the above structure has a diaphragm between the battery module and the thermally conductive adhesive layer, and the diaphragm has thermal conductivity. In this way, the battery module does not need to directly contact the thermally conductive adhesive layer. When a problem occurs and rework is required, the battery module can be easily separated from the water-cooled plate, thereby improving the convenience of repair and disassembly.

[0003] In the prior art, a thermally conductive adhesive layer is provided in the battery module to indirectly contact the water cooling plate, so that the cooling effect of the battery module is limited, and the provision of the thermally conductive adhesive layer increases the production cost. In the prior art, there are also technical means for heat conduction through pipes. Heat conduction through pipes also has the problems of low heat exchange efficiency and high cost, and thus there is room for improvement. Summary of the invention

[0004] In view of this, the present application provides a liquid-cooled battery, which can make the battery core directly contact with the cooling liquid, with a large contact area, high heat exchange efficiency, and a large liquid exchange channel in the whole box. The flow rate control is relatively simple, and no other pipelines are required, which has a lower production cost.

[0005] In summary, in order to improve the heat exchange rate of the liquid-cooled battery and optimize the production cost of the liquid-cooled battery, the present application proposes a liquid-cooled battery.

[0006] The liquid-cooled battery provided in this application adopts the following technical solution:

[0007] A liquid-cooled battery comprises a box, a seal and a battery cell, the box comprising a bottom plate, a side plate and a connecting block, the side plate is connected to the bottom plate, the connecting block is connected to the side plate, the connecting block is located in the middle or upper part of the side plate, the connecting block, the side plate and the bottom plate jointly form a cavity, the side plate is provided with a coolant inlet, and the side plate is also provided with a coolant outlet; a battery grid is opened on the connecting block, the battery cell can be placed in the battery grid, the battery cell has an electrode, the electrode is located at the upper end of the battery cell, so that the battery cell is at least partially located in the cavity, and the electrode is located above the battery grid, the lower part of the battery cell and the box jointly form a cooling cavity, and the seal is arranged between the battery cell and the connecting block.

[0008] By adopting the above technical solution, the battery cell is plugged into the battery cell of the connecting block, so that the bottom end of the battery cell contacts the inner end of the box, the lower part or most of the battery cell is located in the cavity, and the battery cell and the connecting block are sealed by a seal, so that the lower part of the battery cell and the box together form a cooling cavity, and the coolant flows into the cooling cavity through the coolant inlet. In the cooling cavity, the coolant flushes the lower part of the battery cell to cool the battery cell, and the flushed coolant flows out through the coolant outlet. By directly contacting the battery cell with the coolant, the contact surface between the coolant and the battery cell is larger, and the heat exchange efficiency is higher. For many battery cells with thick bottoms (especially lead-acid and lead-carbon batteries), they rely on the sides to generate heat and dissipate heat, but the heat exchange effect of the bottom alone is too poor. The coolant directly contacts the side of the lower part of the battery cell, which can effectively and quickly cool the battery cell. In addition, the coolant inlet, the coolant outlet and the cooling cavity are directly connected, so that the exchange channel of the coolant is larger, and the flow rate control of the coolant is simpler. There is no need to add a larger pump device for the stable operation of the pipeline fluid. By reducing the settings of pipelines, guide plates, etc., the production cost is effectively reduced. At the same time, the structure of the box is simple, which reduces the structural cost of the box, and is also conducive to reducing production costs.

[0009] Preferably, two or more battery cells are provided on the connection block, and a first groove is provided on the connection block at a position close to the side plate, so that the first groove is located between the side plate and the battery cells.

[0010] By adopting the above technical solution, by evenly and orderly opening the battery grids, the connecting block can be connected to more battery cells in an orderly manner, and by setting the first groove, there is a space for accommodating coolant between the battery cell and the side plate, so that the outer wall of the battery cell close to the side plate can also be cooled.

[0011] Preferably, the portion of the connecting blocks between the battery cells is called a partition plate, and the cross-sectional width of the first groove is much larger than the cross-sectional width of the partition plate.

[0012] By adopting the above technical solution, by evenly and orderly opening the battery grids, the partitions between the battery grids can not only effectively separate the battery cells from the battery cells, and the battery cells from the side panels, but also make the partitions thinner, so that more battery cells can be connected to the connecting block, and thus the liquid-cooled battery can cool more battery cells.

[0013] Preferably, two or more battery cells are provided on the connecting block, and a first groove is provided on the connecting block near the side panel so that the first groove is located between the side panel and the battery cell, and first grooves are also provided between the battery cells, and the portion of the connecting block between the battery cell and the first groove is called a partition plate, and the cross-sectional width of the first groove is much larger than the cross-sectional width of the partition plate.

[0014] By adopting the above technical solution, in addition to the battery cells being immersed in the lower part of the coolant, the battery cells located at the connecting block can also be indirectly in contact with the coolant through the partition plate, so that the battery cells located at the connecting block can be indirectly cooled, expanding the cooling range of the battery cells.

[0015] Preferably, the sealing member includes a first sealing member, the first sealing member includes a sealing transverse plate and a sealing vertical plate, the sealing transverse plate is connected to the sealing vertical plate, the sealing transverse plate is located on the connecting block, and the sealing vertical plate is in contact with the outer wall of the battery core.

[0016] By adopting the above technical solution, the first seal is in an "L" shape, and the first seal seals the gap between the battery cell and the connecting block. By sealing the battery cell and the connecting block, the upper part of the liquid-cooled battery is sealed, so that the coolant enters from the coolant inlet, flows through the coolant cavity, and flows out through the coolant outlet, without escaping from the upper part of the battery cell to pollute the upper part of the battery cell and the electrode area, etc.

[0017] Preferably, the sealing member includes a second sealing member, the second sealing member is provided with a second groove, and the second groove cooperates with the partition plate.

[0018] By adopting the above technical solution, when there is only a partition plate between the battery cells, since the partition plate is relatively thin, the second seal is sealed and inserted into the upper end of the partition plate through the second groove, so that when the battery cell is inserted into the battery grid, the battery cell squeezes the second seal on the partition plate, and after the battery cell is inserted, the second seal is sealed around the battery cell, thereby preventing the coolant from escaping from the gap between the battery cell and the connecting block.

[0019] Preferably, the inner side length of the upper portion of the battery compartment is greater than the inner side length of the lower portion of the battery compartment, the battery core is matched with the battery compartment, and a gap is provided between the bottom of the battery core and the inner end of the box body.

[0020] By adopting the above technical solution, the battery core is plugged into the battery grid so that a second gap is formed between the bottom of the battery core and the inner end of the box body, and the coolant flows into the cooling cavity through the coolant inlet. In the cooling cavity, the coolant flushes the side walls and the bottom end of the battery core to cool the battery core, and the flushed coolant then flows out through the coolant outlet.

[0021] Preferably, a protrusion is provided on the side of the battery core, and the protrusion is located on the upper side of the connecting block, so that there is a gap between the bottom of the battery core and the inner end of the box body.

[0022] By adopting the above technical solution, the battery core can be intercepted on the upper side of the battery grid, so that the coolant flushes the side wall and bottom end of the battery core to cool the battery core, thereby expanding the cooling area of ​​the battery core.

[0023] Preferably, the height of the upper end of the battery core is smaller than the height of the upper side of the box body, and the height of the upper side of the battery core is greater than the height of the upper side of the connecting block.

[0024] By adopting the above technical solution, the battery core is located in the box, so that the liquid-cooled battery is generally in the shape of the box, which is more regular and beautiful, and the battery core can be easily detached from the connecting block, so that the electrodes on the upper side of the battery core are away from the connecting block and the coolant.

[0025] Preferably, the coolant inlet and the coolant outlet are arranged diagonally.

[0026] By adopting the above technical solution, the coolant in the cooling cavity can cool all areas of the cooling cavity.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. The battery cell and the battery grid of the connecting block are plugged in, so that the bottom end of the battery cell contacts the inner end of the box, the lower part or most of the battery cell is located in the cavity, and the battery cell and the connecting block are sealed by a seal, so that the lower part of the battery cell and the box together form a cooling cavity, and the coolant flows into the cooling cavity through the coolant inlet. In the cooling cavity, the coolant flushes the lower part of the battery cell to cool the battery cell, and the flushed coolant flows out through the coolant outlet. By directly contacting the battery cell with the coolant, the contact surface between the coolant and the battery cell is larger, and the heat exchange efficiency is higher. For many battery cells with thick bottom thickness (especially lead-acid lead-carbon batteries), they rely on the side to generate heat and dissipate heat, but the heat exchange effect of the bottom alone is too poor. The coolant directly contacts the side of the lower part of the battery cell, which can effectively and quickly cool the battery cell. In addition, the coolant inlet, the coolant outlet and the cooling cavity are directly connected, so that the exchange channel of the coolant is larger, and the flow rate control of the coolant is relatively simple. There is no need to add a larger pump device for the stable operation of the pipeline fluid. In addition, by reducing the setting of pipelines, guide plates, etc., the production cost is effectively reduced. At the same time, the structure of the box is simple, which reduces the structural cost of the box, and is also conducive to reducing the production cost.

[0029] 2. By evenly and orderly opening the battery grids, the partition plates between the battery grids can effectively separate the battery cells from each other and the battery cells from the side plates, and the partition plates between the battery grids are relatively thin, so that more battery cells can be connected to the connecting block, thereby allowing the liquid-cooled battery to cool more battery cells. By setting the first groove, there is a space between the battery cell and the side plate for accommodating the coolant, thereby allowing the outer wall of the battery cell near the side plate to be cooled;

[0030] 3. The first seal is in an "L" shape, and the first seal seals the gap between the battery cell and the connecting block. By sealing the battery cell and the connecting block, the upper part of the liquid-cooled battery is sealed, so that the coolant enters from the coolant inlet, flows through the coolant cavity, and flows out through the coolant outlet, and will not escape from the upper part of the battery cell to pollute the upper part of the battery cell and the electrode area, etc.; in the case where there is only a partition plate between the battery cells, since the partition plate is relatively thin, the second seal is sealed and inserted into the upper end of the partition plate through the second groove, so that when the battery cell is inserted into the battery grid, the battery cell squeezes the second seal on the partition plate, and after the battery cell is inserted, the second seal is sealed around the battery cell, thereby preventing the coolant from escaping from the gap between the battery cell and the connecting block. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the structure of the liquid-cooled battery in this embodiment;

[0032] Figure 2Schematic diagram of the structure of the box in this embodiment;

[0033] Figure 3 is a cross-sectional view of the box body in this embodiment;

[0034] Figure 4 is a cross-sectional view of the liquid-cooled battery in this embodiment;

[0035] Figure 5 Schematic diagram of the structure of the sealing member in this embodiment.

[0036] Figure numerals: 1. box body; 2. seal; 3. battery cell; 4. bottom plate; 5. side plate; 6. connecting block; 7. cavity; 8. coolant inlet; 9. coolant outlet; 10. battery grid; 11. cooling cavity; 12. partition plate; 13. first groove; 14. first seal; 15. sealing horizontal plate; 16. sealing vertical plate. DETAILED DESCRIPTION

[0037] The following is combined with Figure 1-5 This application is described in further detail.

[0038] The embodiment of the present application discloses a liquid-cooled battery.

[0039] Reference Figure 1-Figure 5 , including a box body 1, a seal 2 and a battery core 3, the box body 1 includes a bottom plate 4, four side plates 5 and a connecting block 6, the four side plates 5 are integrally formed with each other to form a rectangular structure, the connecting block 6 is integrally formed and located in the middle of the four side plates 5, and a rectangular battery grid 10 is evenly opened on the upper side of the connecting block 6, the bottom plate 4 is welded to the lower end of the four side plates 5, so that the lower side of the connecting block 6, the upper side of the bottom plate 4 and the inner walls of the four side plates 5 form a cavity 7 together, a coolant inlet 8 is welded on the side plate 5, and the coolant inlet 8 is connected to the cavity 7, and the box body 1 is also welded with a coolant outlet 9 on the inner wall of the cavity 7, and the coolant outlet 9 and the coolant inlet 8 are arranged diagonally, so that the coolant in the cooling cavity 11 can cool all areas of the cooling cavity 11.

[0040] The battery core 3 is inserted into the battery grid 10 on the connecting block 6, and the bottom end of the battery core 3 contacts the upper side of the bottom plate 4, so that the lower part of the battery core 3, the lower side of the connecting block 6, the upper side of the bottom plate 4 and the inner walls of the four side plates 5 together form a cooling cavity 11, so that the height of the upper side of the battery core 3 is lower than the height of the upper side of the side plate 5, and the height of the upper side of the battery core 3 is lower than the height of the upper side of the connecting block 6, and the battery core 3 has an electrode, and the position of the electrode is located at the upper end of the battery core 3, so that the battery core 3 is located in the box body 1, so that the liquid-cooled battery is generally in the shape of the box body 1, which is more regular and beautiful, and the battery core 3 can also be easily detached from the connecting block 6, so that the electrode on the upper side of the battery core 3 is away from the connecting block 6 and the cooling liquid.

[0041] The seal 2 is located between the connecting block 6 and the battery cell 3 , so that the seal 2 seals the gap between the battery cell 3 and the battery cell 10 to prevent the coolant from escaping from the connecting gap between the battery cell 10 and the battery cell 3 . The seal 2 is a common sealing means in the prior art.

[0042] The coolant flows into the cooling cavity 11 through the coolant inlet 8. In the cooling cavity 11, the coolant washes the outer wall of the battery core 3 located in the cooling cavity 11. After that, the coolant flows out through the coolant outlet 9. By making the battery core 3 directly contact with the cooling liquid, the contact surface between the coolant and the battery core 3 is larger, and the heat exchange efficiency is higher. For many battery cells with thick bottom thickness (especially lead-acid lead-carbon batteries), they rely on the side to generate heat and dissipate heat, and the simple bottom heat exchange effect is too poor. By directly contacting the side of the lower part of the battery core 3 with the coolant, an effective and quick cooling effect of the battery core 3 can be achieved. In addition, by directly connecting the coolant inlet 8, the coolant outlet 9 and the cooling cavity 11, the exchange channel of the cooling liquid is larger, which makes the flow rate control of the cooling liquid relatively simple, and there is no need to add a larger pump device for the stable operation of the pipeline fluid. By reducing the setting of pipelines, guide plates, etc., the production cost is effectively reduced. At the same time, the structure of the box 1 is simple, which reduces the structural cost of the box 1 and is also conducive to reducing the production cost.

[0043] Furthermore, in the present embodiment, the battery cells 10 provided on the connection block 6 are densely packed, so that there are partial connection blocks 6 between the battery cells 10, and the partial connection blocks 6 between the battery cells 10 are in plate shape, which are called partition plates 12; the connection block 6 is provided with a first groove 13 on the lower side near the side plate 5, the first groove 13 is communicated with the cooling cavity 11, and there is a partition plate 12 between the battery cells 10 and the first groove 13, and the cross-sectional width of the first groove 13 is much larger than the cross-sectional width of the partition plate 12, and through the uniformly designed layout of the battery cells 10, the partition plates 12 between the battery cells 10 can effectively separate the battery cells 3 from the battery cells 3, and the battery cells 3 from the side plate 5, and also make the partition plates 12 relatively thin, so that more battery cells 3 can be connected to the connection block 6, and then the liquid-cooled battery can cool more battery cells 3, and through the setting of the first groove 13, the cooling liquid can be accommodated between the battery cells 3 and the side plate 5, and then the outer wall of the battery cells 3 near the side plate 5 can also be cooled.

[0044] Furthermore, in the present embodiment, a plurality of battery cells 10 are provided on the connecting block 6, a first groove 13 is provided on the lower side of the connecting block 6 near the side plate 5, and a first groove 13 is also provided on the lower side of the connecting block 6 between the battery cells 10, so that a first groove 13 is provided between the battery cell 10 and the side plate 5, a partition plate 12 is provided between the first groove 13 and the battery cell 10, the first grooves 13 are connected to each other, and the first groove 13 is also connected to the cooling cavity 11, and the coolant flows into the cooling cavity 11 and the first groove 13 through the coolant inlet 8. In the cooling cavity 11, the coolant flushes the outer wall of the battery core 3 located in the cooling cavity 11, and in the first groove 13, the coolant cools the portion of the battery core 3 located in the battery cell 10 through the partition plate 12, thereby expanding the cooling range of the battery core 3, and then the coolant flows out through the coolant outlet 9.

[0045] Furthermore, in the present embodiment, the seal 2 comprises a first seal 14 and a second seal, the first seal 14 comprises a sealing transverse plate 15 and a sealing vertical plate 16, the lower side of the sealing vertical plate 16 is integrally formed with the sealing transverse plate 15, the first seal 14 is in an "L" shape, so that the sealing transverse plate 15 is sealed and placed on the upper side of the connecting block 6, and the sealing vertical plate 16 fits the side wall of the battery core 3, thereby realizing the sealing of the battery core 3 close to the side plate 5 by the first seal 14, and a second groove is provided on the lower side of the second seal, and the second seal is plugged into the upper end of the partition plate 12 through the second groove, so that the second seal seals the gap between the battery cells 10, so that the coolant enters from the coolant inlet 8, flows through the coolant cavity, and flows out through the coolant outlet 9, without escaping from the upper part of the battery core 3 to pollute the upper part of the battery core 3 and the electrode area, etc.

[0046] Furthermore, in the present embodiment, the inner side length of the upper portion of the battery cell 10 is greater than the inner side length of the lower portion of the battery cell 10, so that when the battery cell 3 is matched with the battery cell 10, there is a gap between the bottom of the battery cell 3 and the inner end of the box body 1, and the coolant flows into the cooling cavity 11 through the coolant inlet 8. In the cooling cavity 11, the coolant flushes the side walls and the bottom end of the battery cell 3 to cool the battery cell 3, and the flushed coolant then flows out through the coolant outlet 9.

[0047] Furthermore, in the present embodiment, a protrusion is provided on the side of the battery cell 3, so that the battery cell 3 is intercepted on the upper side of the connecting block 6 through the protrusion, thereby creating a gap between the bottom of the battery cell 3 and the inner end of the box body 1, and the coolant flows into the cooling cavity 11 through the coolant inlet 8. In the cooling cavity 11, the coolant flushes the side wall and the bottom end of the battery cell 3 to cool the battery cell 3, and the flushed coolant then flows out through the coolant outlet 9.

[0048] Furthermore, in this embodiment, the axial length of the connecting block 6 should be much smaller than the axial length of the battery core 3 .

[0049] Furthermore, in this embodiment, the coolant inlet 8 is connected to a pump, a control mechanism is provided on the pump, the pump is connected to a coolant inlet 8 pipeline, and the coolant outlet 9 is connected to a coolant outlet 9 pipeline.

[0050] Furthermore, in this embodiment, the battery core 3 and the partition plate 12 may be in direct contact to achieve a sealed connection.

[0051] Furthermore, in this embodiment, the present invention has no special restriction on the specific position of the connecting block 6, and the connection between the connecting block 6 and the battery cell 3 can be achieved in a manner well known to those skilled in the art, and most of the positions of the battery cell 3 except the electrodes can be immersed in the coolant. Those skilled in the art can select and adjust according to the specific application conditions and product requirements, preferably the middle and upper parts of the side panels 5.

[0052] Furthermore, in this embodiment, the present invention has no particular limitation on the shapes of the battery cell 10 and the battery core 3. The shapes may be in a manner known to those skilled in the art that enables the battery core 3 to cooperate with the battery cell 10. Those skilled in the art may select and adjust the shapes according to the specific application and product requirements, preferably a rectangle.

[0053] Furthermore, in this embodiment, the present invention has no special restrictions on the specific positions of the coolant inlet 8 and the coolant outlet 9. It can be in a manner familiar to those skilled in the art that can achieve the replacement and flow of the coolant in the cooling cavity 11. Those skilled in the art can select and adjust according to the specific application conditions and product requirements. It is preferably symmetrically arranged in the lower part of the cooling cavity 11, more preferably arranged at the diagonal position of the cooling cavity 11, and most preferably arranged at the spatial diagonal position of the cooling cavity 11.

[0054] Furthermore, in this embodiment, the present invention has no particular restrictions on the specific materials of the box body 1 and the connecting block 6. Any material that is familiar to those skilled in the art and capable of containing the coolant can be used. Those skilled in the art can select and adjust according to specific application conditions and product requirements. Among them, the bottom plate 4 is preferably made of a heat-conductive material.

[0055] It should be noted that the various embodiments of the present application can be arbitrarily combined into a new embodiment if the solutions do not conflict and the technical solutions can coexist.

[0056] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A liquid-cooled battery, characterized in that: The invention comprises a box body (1), a sealing member (2) and a battery core (3), wherein the box body (1) comprises a bottom plate (4), a side plate (5) and a connecting block (6), wherein the side plate (5) is connected to the bottom plate (4), the connecting block (6) is connected to the side plate (5), the connecting block (6) is located in the middle or upper part of the side plate (5), the connecting block (6), the side plate (5) and the bottom plate (4) jointly form a cavity (7), the side plate (5) is provided with a coolant inlet (8), and the side plate (5) is also provided with a coolant outlet (9); The connecting block (6) is provided with a battery compartment (10), the battery core (3) can be placed in the battery compartment (10), the battery core (3) has an electrode, the electrode is located at the upper end of the battery core (3), so that the battery core (3) is at least partially located in the cavity (7), and the electrode is located above the battery compartment (10), the lower part of the battery core (3) and the box (1) together form a cooling cavity (11), and the sealing member (2) is arranged between the battery core (3) and the connecting block (6).

2. The liquid-cooled battery according to claim 1, characterized in that: The connection block (6) is provided with two or more battery cells (10), and the connection block (6) is provided with a first groove (13) at a position close to the side plate (5), so that the first groove (13) is located between the side plate (5) and the battery cells (10).

3. The liquid-cooled battery according to claim 2, characterized in that: The portion of the connecting block (6) between the battery cells (10) is called a partition plate (12), and the cross-sectional width of the first groove (13) is much larger than the cross-sectional width of the partition plate (12).

4. The liquid-cooled battery according to claim 1, characterized in that: The connecting block (6) is provided with two or more battery cells (10), and the connecting block (6) is provided with a first groove (13) at a position close to the side plate (5), so that the first groove (13) is located between the side plate (5) and the battery cells (10), and the battery cells (10) are also provided with first grooves (13) between each other, and the portion of the connecting block (6) between the battery cells (10) and the first groove (13) is called a partition plate (12), and the cross-sectional width of the first groove (13) is much greater than the cross-sectional width of the partition plate (12).

5. The liquid-cooled battery according to claim 1, characterized in that: The sealing member (2) comprises a first sealing member (14), wherein the first sealing member (14) comprises a sealing transverse plate (15) and a sealing vertical plate (16), wherein the sealing transverse plate (15) is connected to the sealing vertical plate (16), the sealing transverse plate (15) is located on the connecting block (6), and the sealing vertical plate (16) is in contact with the outer wall of the battery core (3).

6. The liquid-cooled battery according to claim 3, characterized in that: The sealing member (2) comprises a second sealing member, on which a second groove is formed, and the second groove cooperates with the partition plate (12).

7. The liquid-cooled battery according to claim 1, characterized in that: The inner side length of the upper portion of the battery compartment (10) is greater than the inner side length of the lower portion of the battery compartment (10); the battery core (3) cooperates with the battery compartment (10); and a gap is provided between the bottom of the battery core (3) and the inner end of the box body (1).

8. The liquid-cooled battery according to claim 1, characterized in that: A protrusion is provided on the side of the battery core (3), and the protrusion is located on the upper side of the connecting block (6), so that a gap exists between the bottom of the battery core (3) and the inner end of the box body (1).

9. The liquid-cooled battery according to claim 1, characterized in that: The height of the upper end of the battery core (3) is smaller than the height of the upper side of the box body (1), and the height of the upper end of the battery core (3) is greater than the height of the upper side of the connecting block (6).

10. The liquid-cooled battery according to claim 1, characterized in that: The cooling liquid inlet (8) and the cooling liquid outlet (9) are arranged diagonally.

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