Immersed battery liquid cooling box body and immersed liquid cooling battery

Abstract

The utility model discloses an immersed battery liquid cooling box body and an immersed liquid cooling battery, the immersed battery liquid cooling box body comprises a box body used for being connected with a battery core and a sealing element, the sealing element is connected with the upper part of the box body, so that the box body can be connected with the battery core in a sealing manner, and the box body, the sealing element and the battery core can form a cooling cavity together; a cooling liquid inlet is formed in one end of the box body, and a cooling liquid outlet is formed in the other end of the box body. The liquid cooling box has the effects of improving the heat exchange rate of the liquid cooling box body of the immersed battery, optimizing the cooling rate control convenience of the battery core and reducing the production cost.

Description

Technical Field

[0001] This application relates to the field of battery cooling technology, and in particular to an immersion-type liquid-cooled battery housing and an immersion-type liquid-cooled battery. Background Technology

[0002] Current battery water cooling methods primarily employ pipe-based devices, placing pipes around or at the bottom of the battery and using flowing liquid for heat conduction. This type of device has the following drawbacks:

[0003] 1. It increased structural costs to some extent;

[0004] 2. The pipeline has bends and the water pressure requirement is high, so a larger pump or similar device is needed;

[0005] 3. The coolant and battery are separated by pipes, resulting in low heat exchange efficiency. Utility Model Content

[0006] In view of this, this application provides an immersion battery liquid cooling box and an immersion liquid-cooled battery, which allows the battery cell to directly contact the coolant, with a large contact area, high heat exchange efficiency, and a large liquid exchange channel throughout the box, making flow rate control relatively simple. It also eliminates the need for other pipes and has a lower production cost.

[0007] In summary, in order to improve the heat exchange rate of the immersion battery liquid cooling box, optimize the convenience of battery cell cooling rate control, and reduce production costs, this application proposes an immersion battery liquid cooling box and an immersion liquid-cooled battery.

[0008] The immersion battery liquid-cooled housing provided in this application adopts the following technical solution:

[0009] An immersion battery liquid cooling box includes a box for connecting to a battery cell and a sealing element. The sealing element is connected to the upper part of the box, so that the box can be sealed to the battery cell. The box, the sealing element and the battery cell can form a cooling cavity together. One end of the box is provided with a coolant inlet and the other end of the box is provided with a coolant outlet.

[0010] By adopting the above technical solution, after the battery cell is connected to the housing, the sealing component seals the connection gap between the battery cell and the housing. This allows the portion of the battery cell inside the housing, the housing, and the sealing component to jointly form a cooling chamber. Coolant flows into the cooling chamber through the coolant inlet. Inside the cooling chamber, the coolant washes over the lower part of the battery cell to cool it. The washed-over coolant then flows out through the coolant outlet. This direct contact between the battery cell and the coolant results in a larger contact area and higher heat exchange efficiency. For many battery cells with thicker bottoms (especially lead-acid / lead-carbon batteries), heat dissipation relies on side heating, and bottom heat exchange alone is ineffective. Furthermore, the direct connection between the coolant inlet, coolant outlet, and the cooling chamber creates a larger coolant exchange channel, simplifying coolant flow rate control. This eliminates the need for large pumps and reduces piping, effectively lowering production costs.

[0011] Preferably, the housing includes a bottom plate, side plates, and connecting blocks. The side plates are connected to the bottom plate, and the connecting blocks are connected to the side plates. The connecting blocks are located in the middle or upper part of the side plates. A cavity is formed between the connecting blocks, the side plates, and the bottom plate. A battery cell for connecting to the battery cells is provided on the connecting blocks. The battery cells are connected to each other only partially by connecting blocks, which are called partition plates.

[0012] By adopting the above technical solution, the battery cell is inserted into the battery grid 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. The battery cell and the connecting block are sealed by a sealing element, so that the lower part of the battery cell and the box together form a cooling cavity. By making the battery grid only have partition plates, the partition plates can effectively separate the battery cells from each other and the battery cells from the side plates. The partition plates are also relatively thin, so that more battery cells can be connected to the connecting block. The coolant flows into the cooling cavity through the coolant inlet. In the cooling cavity, the coolant washes the lower part of the battery cell to cool the battery cell. The washed coolant then flows out through the coolant outlet.

[0013] Preferably, the sealing element includes a first sealing element and a second sealing element. The first sealing element includes a sealing horizontal plate and a sealing vertical plate. The sealing horizontal plate is connected to the sealing vertical plate and is located on the connecting block. The sealing vertical plate is in contact with the outer wall of the battery cell. The second sealing element has a second groove that cooperates with the partition plate.

[0014] By adopting the above technical solution, the first seal is L-shaped and seals the gap between the battery cell and the connecting block near the side plate. By sealing the battery cell and the connecting block, the upper part of the battery liquid cooling box is sealed, allowing the coolant to enter from the coolant inlet, flow through the coolant cavity, and flow out through the coolant outlet, without escaping from the upper part of the battery cell and contaminating the upper part of the battery cell and the electrode area. The second seal is inserted into the upper part of the partition plate between the battery cells through the second groove. During the process of inserting the battery cell into the battery cell, the battery cell squeezes the second seal on the partition plate. After the battery cell is inserted, the second seal seals around the battery cell, thereby preventing the coolant from escaping from the gap between the battery cell and the connecting block.

[0015] Preferably, the connecting block has a first groove near the side plate, the first groove is in communication with the cooling cavity, and the first grooves are in communication with each other.

[0016] By adopting the above technical solution, in addition to the battery cell being immersed in the lower part of the coolant, the battery cell located at the connecting block can also indirectly contact the coolant through the first groove, so that the battery cell located at the connecting block can be indirectly cooled, thus expanding the cooling range of the battery cell.

[0017] Preferably, the connecting block has a first groove near the battery cell, the first groove is connected to the cooling cavity, and the first grooves are interconnected.

[0018] By adopting the above technical solution, in addition to the battery cell being immersed in the lower part of the coolant, the battery cell located at the connecting block can also indirectly contact the coolant through the first groove, so that the battery cell located at the connecting block can be indirectly cooled, thus expanding the cooling range of the battery cell.

[0019] Preferably, the cross-sectional width of the first groove is much larger than the cross-sectional width of the partition plate.

[0020] By adopting the above technical solution, the separator plate is made thinner and lighter, and the first groove can hold more coolant, so that the coolant in the first groove can better cool the battery cell through the separator plate.

[0021] Preferably, the coolant inlet and the coolant outlet are arranged diagonally.

[0022] By adopting the above technical solution, the coolant in the cooling cavity can cool all areas of the cooling cavity.

[0023] An immersion liquid-cooled battery includes a battery cell and an immersion liquid-cooled housing as described above, wherein the battery cell is connected to the immersion liquid-cooled housing.

[0024] By adopting the above technical solution, after the battery cell is connected to the casing in the immersion liquid-cooled battery, the sealing component seals the connection gap between the battery cell and the casing, so that the part of the battery cell inside the casing, the casing, and the sealing component together form a cooling chamber. The coolant flows into the cooling chamber through the coolant inlet. In the cooling chamber, the coolant washes over the lower part of the battery cell to cool it. The washed coolant then flows out through the coolant outlet. At the same time, the battery cell and the coolant are in direct contact, resulting in a large contact area between the coolant and the battery cell and a high heat exchange efficiency. For many battery cells with a thick bottom (especially lead-acid lead-carbon batteries), they rely on side heating for heat dissipation, but the heat exchange effect of the bottom alone is too poor. Furthermore, the direct connection between the coolant inlet, coolant outlet, and cooling chamber makes the coolant exchange channel larger, which simplifies the control of the coolant flow rate, eliminates the need for large pump devices, and reduces the number of pipes, effectively reducing production costs.

[0025] Preferably, the immersion battery liquid cooling box includes a box body, the box body includes a connecting block, the height of the upper end of the battery cell is less than the height of the upper side of the box body, and the height of the upper end of the battery cell is greater than the height of the upper side of the connecting block.

[0026] By adopting the above technical solution, the part of the battery cell with electrodes at the top can be far away from the cooling cavity of the casing, and the lower part of the battery cell is in direct contact with the coolant, so that the coolant can effectively and quickly reduce the temperature of the lower part of the battery cell. Moreover, the entire battery cell is located inside the casing, making the immersion liquid-cooled battery more regular and aesthetically pleasing.

[0027] Preferably, there is a second gap between the lower end of the battery cell and the bottom end of the housing.

[0028] By adopting the above technical solution, the lower end of the battery cell is also in direct contact with the coolant, effectively reducing the temperature at the bottom of the battery cell.

[0029] In summary, this application includes at least one of the following beneficial technical effects:

[0030] 1. After the battery cell is connected to the housing, the sealing component seals the connection gap between the battery cell and the housing. This allows the portion of the battery cell inside the housing, the housing, and the sealing component to together form a cooling chamber. Coolant flows into the cooling chamber through the coolant inlet. Inside the cooling chamber, the coolant washes over the lower part of the battery cell to cool it. The washed-over coolant then flows out through the coolant outlet. This direct contact between the battery cell and the coolant results in a larger contact area and higher heat exchange efficiency. For many battery cells with thicker bottoms (especially lead-acid / lead-carbon batteries), heat dissipation relies on side heating, but bottom heat exchange alone is ineffective. Furthermore, the direct connection between the coolant inlet, coolant outlet, and the cooling chamber creates a larger coolant exchange channel, simplifying coolant flow rate control. This eliminates the need for large pumps and reduces piping, effectively lowering production costs.

[0031] 2. The first seal is L-shaped. It seals the gap between the battery cell and the connecting block near the side plate. By sealing the battery cell and the connecting block, the upper part of the liquid-cooled battery is sealed, allowing the coolant to enter from the coolant inlet, flow through the coolant cavity, and exit through the coolant outlet, without escaping from the upper part of the battery cell and contaminating the upper part of the battery cell and the electrode area. The second seal is inserted into the upper part of the partition plate between the battery cells through the second groove. During the insertion of the battery cell into the battery cell, the battery cell squeezes the second seal on the partition plate. After the battery cell is inserted, the second seal seals around the battery cell, thereby preventing the coolant from escaping from the gap between the battery cell and the connecting block.

[0032] 3. The electrodes of the battery cell are far from the cooling chamber of the casing, and the lower part of the battery cell is in direct contact with the coolant. This allows the coolant to effectively and quickly reduce the temperature of the lower part of the battery cell. The entire battery cell is still located inside the casing, making the immersion liquid-cooled battery more regular and aesthetically pleasing. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the submersible liquid-cooled battery in this embodiment;

[0034] Figure 2 This is a schematic diagram of the box structure in this embodiment;

[0035] Figure 3 This is a cross-sectional view of the box in this embodiment;

[0036] Figure 4 This is a schematic diagram of the seal in this embodiment;

[0037] Figure 5 This is a cross-sectional view of the submersible liquid-cooled battery in this embodiment.

[0038] Reference numerals: 1. Housing; 2. Seal; 3. Battery cell; 4. Bottom plate; 5. Side plate; 6. Connecting block; 7. Cavity; 8. Coolant inlet; 9. Coolant outlet; 10. Battery compartment; 11. Cooling chamber; 12. Divider plate; 13. First groove; 14. First seal; 15. Sealing horizontal plate; 16. Sealing vertical plate. Detailed Implementation

[0039] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0040] Example 1

[0041] This application discloses an immersion battery liquid cooling box.

[0042] Reference Figures 1-5 The system includes a housing 1 and a sealing element 2. The housing 1 includes a bottom plate 4, four side plates 5, and a connecting block 6. The four side plates 5 are integrally formed to form a rectangular structure. The connecting block 6 is integrally formed and located in the middle of the four side plates 5. Rectangular battery grids 10 are evenly distributed on the upper side of the connecting block 6. The battery grids 10 are used to connect with the battery cells 3. After the battery cells 3 are connected to the connecting block 6, the lower part of the battery cells 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 can jointly form a cooling cavity 11. 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 can jointly form a cavity 7. A coolant inlet 8 is welded on the side plates 5. The coolant inlet 8 communicates with the cavity 7. The housing 1 also welds a coolant outlet 9 on the inner wall of the cavity 7. 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.

[0043] The seal 2 is located between the connecting block 6 and the battery cell 10, so that after the battery cell 3 is connected to the connecting block 6, the seal 2 seals the gap between the battery cell 3 and the connecting block 6 in the battery cell 10, preventing coolant from escaping from the connection gap between the battery cell 3 and the connecting block 6. The seal 2 is a common sealing method in the prior art.

[0044] After the user inserts the battery cell 3 to be cooled into the connecting block 6, the coolant flows into the cooling chamber 11 through the coolant inlet 8. Inside the cooling chamber 11, the coolant washes over the outer wall of the battery cell 3 located within the cooling chamber 11. Then, the coolant flows out through the coolant outlet 9. By allowing the battery cell 3 to directly contact the coolant, the contact surface between the coolant and the battery cell 3 is large, resulting in high heat exchange efficiency. For many battery cells with thick bottoms (especially lead-acid and lead-carbon batteries), they rely on side heating for heat dissipation, but the heat exchange effect of simply relying on the bottom is too poor. Direct contact between the coolant and the lower side of the battery cell 3 can achieve an effective and rapid cooling effect. Furthermore, the direct connection between the coolant inlet 8, the coolant outlet 9, and the cooling chamber 11 results in a large coolant exchange channel, making coolant flow rate control simpler. There is no need to add large pump devices for stable operation of the pipeline fluid. Moreover, by reducing the setting of pipes, guide plates, etc., production costs are effectively reduced. At the same time, the simple structure of the housing 1 reduces the structural cost of the housing 1, which also helps to reduce production costs.

[0045] Furthermore, in this embodiment, after the battery cell 3 is connected to the connecting block 6, the upper height of the battery cell 3 is lower than the upper height of the side plate 5, and the upper height of the battery cell 3 is lower than the upper height of the connecting block 6. The electrode position of the battery cell 3 is located at the upper end of the battery cell 3, so that the battery cell 3 is located inside the housing 1, and the battery liquid cooling housing is generally in the shape of the housing 1, which is more regular and beautiful. In addition, the battery cell 3 can also be easily detached from the connecting block 6, so that the electrode on the upper side of the battery cell 3 is far away from the connecting block 6 and the coolant.

[0046] Furthermore, in this embodiment, the battery cells 10 on the connecting block 6 are relatively dense, so that the battery cells 10 are connected to each other only partially by the connecting blocks 6. This part of the connecting block 6 is plate-shaped and is called the partition plate 12. The connecting block 6 has a first groove 13 on its lower side near the side plate 5. The first groove 13 is connected to the cooling cavity 11, and the cross-sectional width of the first groove 13 is much larger than the cross-sectional width of the partition plate 12. 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 each other and the battery cells 3 from the side plate 5. The partition plates 12 are also relatively thin, so that more battery cells 3 can be connected on the connecting block 6. This allows the battery liquid cooling box to cool more battery cells 3. The first groove 13 allows coolant to be contained between the battery cells 3 and the side plate 5, so that the outer wall of the battery cells 3 near the side plate 5 can also be cooled.

[0047] Furthermore, in this embodiment, the connecting block 6 has multiple battery cells 10. The connecting block 6 has a first groove 13 on its lower side near the side plate 5. The connecting block 6 also has a first groove 13 on the lower side between the battery cells 10, so that there is a partition plate 12 between the first groove 13 and the battery cells 10. The first grooves 13 are interconnected with each other. The first groove 13 is also connected to the cooling cavity 11. Coolant flows into the cooling cavity 11 and the first groove 13 through the coolant inlet 8. In the cooling cavity 11, the coolant washes the outer wall of the battery cell 3 located in the cooling cavity 11. In the first groove 13, the coolant cools the part of the battery cell 3 located in the battery cell 10 through the partition plate 12, expanding the cooling range of the battery cell 3. After that, the coolant flows out through the coolant outlet 9.

[0048] Furthermore, in this embodiment, the sealing element 2 includes a first sealing element 14 and a second sealing element. The first sealing element 14 includes a sealing horizontal plate 15 and a sealing vertical plate 16. The lower side of the sealing vertical plate 16 is integrally formed with the sealing horizontal plate 15. The first sealing element 14 is L-shaped, so that the sealing horizontal plate 15 is placed on the upper side of the connecting block 6 and the sealing vertical plate 16 fits against the side wall of the battery cell 3, thereby achieving the sealing of the battery cell 3 near the side plate 5 by the first sealing element 14. The lower side of the second sealing element has a second groove. The second sealing element is inserted into the upper end of the partition plate 12 through the second groove, so that the second sealing element seals the gaps between the battery cells 10, allowing the coolant to enter from the coolant inlet 8, flow through the coolant cavity, and flow out through the coolant outlet 9, without escaping from the upper part of the battery cell 3 and contaminating the upper part of the battery cell 3 and the electrode area, etc.

[0049] Furthermore, in this embodiment, the inner side length of the upper part of the battery cell 10 is greater than the inner side length of the lower part of the battery cell 10, so that when the battery cell 3 is fitted with the battery cell 10, there is a gap between the bottom of the battery cell 3 and the inner end of the housing 1. The coolant flows into the cooling chamber 11 through the coolant inlet 8. In the cooling chamber 11, the coolant washes over the side wall and bottom of the battery cell 3 to cool the battery cell 3. The washed coolant then flows out through the coolant outlet 9.

[0050] Furthermore, in this embodiment, the side of the battery cell 3 may be provided with a protrusion, 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 housing 1. The coolant flows into the cooling chamber 11 through the coolant inlet 8. In the cooling chamber 11, the coolant washes over the side wall and bottom of the battery cell 3 to cool the battery cell 3. The washed coolant then flows out through the coolant outlet 9.

[0051] Furthermore, in this embodiment, the axial length of the connecting block 6 should be much smaller than the axial length of the battery cell 3.

[0052] Furthermore, in this embodiment, a pump is connected to the coolant inlet 8, a control mechanism is provided on the pump, the pump is connected to the coolant inlet 8 pipe, and the coolant outlet 9 is connected to the coolant outlet 9 pipe.

[0053] Furthermore, in this embodiment, a sealed connection can also be achieved by direct contact between the battery cell 3 and the separator plate 12.

[0054] Furthermore, in this embodiment, the present invention does not particularly limit the specific position of the connecting block 6. It can be any method known to those skilled in the art that enables the connection between the connecting block 6 and the battery cell 3, and that most of the battery cell 3, except for the electrodes, can be immersed in the coolant. Those skilled in the art can select and adjust according to the specific application and product requirements. Preferably, it is the middle or upper part of the side plate 5.

[0055] Furthermore, in this embodiment, the present invention does not impose any particular limitation on the shape of the battery grid 10 and the battery cell 3. Any method known to those skilled in the art that can achieve the cooperation between the battery cell 3 and the battery grid 10 is acceptable. The shape of the first groove can change with the shape of the battery grid. Those skilled in the art can select and adjust it according to the specific application and product requirements. Preferably, it is rectangular.

[0056] Furthermore, in this embodiment, the present invention does not particularly limit the specific positions of the coolant inlet 8 and the coolant outlet 9. Any method known to those skilled in the art that can realize the replacement and flow of coolant in the cooling cavity 11 is acceptable. Those skilled in the art can select and adjust according to specific application conditions and product requirements. Preferably, they are symmetrically arranged in the lower part of the cooling cavity 11, more preferably arranged in the diagonal position of the cooling cavity 11, and most preferably arranged in the spatial diagonal position of the cooling cavity 11.

[0057] Furthermore, in this embodiment, the present invention does not have any particular restrictions on the specific materials of the housing 1 and the connecting block 6. Any material known to those skilled in the art that can accommodate coolant can be used. Those skilled in the art can select and adjust according to specific application conditions and product requirements. The bottom plate 4 is preferably made of a heat-conducting material.

[0058] Example 2

[0059] This application discloses an immersion liquid-cooled battery.

[0060] Reference Figures 1-5The device includes a housing 1, a sealing element 2, and a battery cell 3. The housing 1 includes a bottom plate 4, four side plates 5, and a connecting block 6. The four side plates 5 are integrally formed to form a rectangular structure. The connecting block 6 is integrally formed and located in the middle of the four side plates 5. Rectangular battery cells 10 are evenly provided 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 wall of the four side plates 5 together form a cavity 7. A coolant inlet 8 is welded on the side plate 5, and the coolant inlet 8 communicates with the cavity 7. The housing 1 also has a coolant outlet 9 welded on the inner wall of the cavity 7, and the coolant outlet 9 is diagonally arranged with the coolant inlet 8, so that the coolant in the cooling cavity 11 can cool all areas of the cooling cavity 11.

[0061] The battery cell 3 is inserted into the battery grid 10 on the connecting block 6. The bottom end of the battery cell 3 contacts the upper side of the base plate 4, so that the lower part of the battery cell 3, the lower side of the connecting block 6, the upper side of the base plate 4, and the inner walls of the four side plates 5 together form a cooling cavity 11. This makes the upper height of the battery cell 3 lower than the upper height of the side plate 5 and the upper height of the battery cell 3 lower than the upper height of the connecting block 6. The battery cell 3 has electrodes, which are located at the upper end of the battery cell 3. This makes the battery cell 3 located inside the housing 1, so that the liquid-cooled battery is in the shape of the housing 1, which is more regular and beautiful. The battery cell 3 can also be easily detached from the connecting block 6, so that the electrodes on the upper side of the battery cell 3 are away from the connecting block 6 and the coolant.

[0062] 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 grid 10, preventing coolant from escaping from the connection gap between the battery grid 10 and the battery cell 3. The seal 2 is a common sealing method in the prior art.

[0063] Coolant flows into the cooling chamber 11 through coolant inlet 8. Inside the cooling chamber 11, the coolant washes over the outer wall of the battery cell 3 located within the cooling chamber 11. Then, the coolant flows out through coolant outlet 9. By allowing the battery cell 3 to directly contact the coolant, the contact surface between the coolant and the battery cell 3 is large, resulting in high heat exchange efficiency. For many battery cells with thick bottoms (especially lead-acid and lead-carbon batteries), they rely on side heating for heat dissipation, but the heat exchange effect of simply relying on the bottom is too poor. Direct contact between the coolant and the lower side of the battery cell 3 can achieve an effective and rapid cooling effect. Furthermore, the direct connection between the coolant inlet 8, the coolant outlet 9, and the cooling chamber 11 results in a large coolant exchange channel, making coolant flow rate control simpler. It eliminates the need for large pump devices to ensure stable operation of the fluid in the pipeline. By reducing the number of pipes and guide plates, production costs are effectively reduced. At the same time, the simple structure of the housing 1 reduces the structural cost of the housing 1, which also helps to reduce production costs.

[0064] Furthermore, in this embodiment, the battery cells 10 on the connecting block 6 are relatively dense, so that the battery cells 10 have partial connecting blocks 6 between each other. The partial connecting blocks 6 between the battery cells 10 are plate-shaped and are called partition plates 12. The connecting block 6 has a first groove 13 on its lower side near the side plate 5. The first groove 13 communicates with the cooling cavity 11. There is a partition plate 12 between the battery cells 10 and the first groove 13. The cross-sectional width of the first groove 13 is much larger than the cross-sectional width of the partition plate 12. 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 each other and the battery cells 3 from the side plate 5. The partition plates 12 are also relatively thin, so that more battery cells 3 can be connected on the connecting block 6. This allows the liquid-cooled battery to cool more battery cells 3. The setting of the first groove 13 allows coolant to be contained between the battery cells 3 and the side plate 5, so that the outer wall of the battery cells 3 near the side plate 5 can also be cooled.

[0065] Furthermore, in this embodiment, the connecting block 6 has multiple battery cells 10. The connecting block 6 has a first groove 13 on its lower side near the side plate 5. The connecting block 6 also has a first groove 13 on the lower side between the battery cells 10, so that there is a first groove 13 between the battery cells 10 and the side plate 5. There is a partition plate 12 between the first groove 13 and the battery cells 10. The first grooves 13 are interconnected with each other. The first grooves 13 are also connected to the cooling cavity 11. Coolant flows into the cooling cavity 11 and the first groove 13 through the coolant inlet 8. In the cooling cavity 11, the coolant washes the outer wall of the battery cell 3 located in the cooling cavity 11. In the first groove 13, the coolant cools the part of the battery cell 3 located in the battery cell 10 through the partition plate 12, expanding the coolable range of the battery cell 3. After that, the coolant flows out through the coolant outlet 9.

[0066] Furthermore, in this embodiment, the sealing element 2 includes a first sealing element 14 and a second sealing element. The first sealing element 14 includes a sealing horizontal plate 15 and a sealing vertical plate 16. The lower side of the sealing vertical plate 16 is integrally formed with the sealing horizontal plate 15. The first sealing element 14 is L-shaped, so that the sealing horizontal plate 15 is placed on the upper side of the connecting block 6 and the sealing vertical plate 16 fits against the side wall of the battery cell 3, thereby achieving the sealing of the battery cell 3 near the side plate 5 by the first sealing element 14. The lower side of the second sealing element has a second groove. The second sealing element is inserted into the upper end of the partition plate 12 through the second groove, so that the second sealing element seals the gaps between the battery cells 10, allowing the coolant to enter from the coolant inlet 8, flow through the coolant cavity, and flow out through the coolant outlet 9, without escaping from the upper part of the battery cell 3 and contaminating the upper part of the battery cell 3 and the electrode area, etc.

[0067] Furthermore, in this embodiment, the inner side length of the upper part of the battery cell 10 is greater than the inner side length of the lower part of the battery cell 10, so that when the battery cell 3 is fitted with the battery cell 10, there is a gap between the bottom of the battery cell 3 and the inner end of the housing 1. The coolant flows into the cooling chamber 11 through the coolant inlet 8. In the cooling chamber 11, the coolant washes over the side wall and bottom of the battery cell 3 to cool the battery cell 3. The washed coolant then flows out through the coolant outlet 9.

[0068] Furthermore, in this embodiment, the side of the battery cell 3 is provided with a protrusion, 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 housing 1. The coolant flows into the cooling chamber 11 through the coolant inlet 8. In the cooling chamber 11, the coolant washes over the side wall and bottom of the battery cell 3 to cool the battery cell 3. The washed coolant then flows out through the coolant outlet 9.

[0069] Furthermore, in this embodiment, the axial length of the connecting block 6 should be much smaller than the axial length of the battery cell 3.

[0070] Furthermore, in this embodiment, a pump is connected to the coolant inlet 8, a control mechanism is provided on the pump, the pump is connected to the coolant inlet 8 pipe, and the coolant outlet 9 is connected to the coolant outlet 9 pipe.

[0071] Furthermore, in this embodiment, a sealed connection can also be achieved by direct contact between the battery cell 3 and the separator plate 12.

[0072] Furthermore, in this embodiment, the present invention does not particularly limit the specific position of the connecting block 6. It can be any method known to those skilled in the art that enables the connection between the connecting block 6 and the battery cell 3, and that most of the battery cell 3, except for the electrodes, can be immersed in the coolant. Those skilled in the art can select and adjust according to the specific application and product requirements. Preferably, it is the middle or upper part of the side plate 5.

[0073] Furthermore, in this embodiment, the present invention does not impose any particular limitation on the shape of the battery grid 10 and the battery cell 3. Any method known to those skilled in the art that can achieve the cooperation between the battery cell 3 and the battery grid 10 is acceptable. Those skilled in the art can select and adjust according to specific application conditions and product requirements, and a rectangle is preferred.

[0074] Furthermore, in this embodiment, the present invention does not particularly limit the specific positions of the coolant inlet 8 and the coolant outlet 9. Any method known to those skilled in the art that can realize the replacement and flow of coolant in the cooling cavity 11 is acceptable. Those skilled in the art can select and adjust according to specific application conditions and product requirements. Preferably, they are symmetrically arranged in the lower part of the cooling cavity 11, more preferably arranged in the diagonal position of the cooling cavity 11, and most preferably arranged in the spatial diagonal position of the cooling cavity 11.

[0075] Furthermore, in this embodiment, the present invention does not have any particular restrictions on the specific materials of the housing 1 and the connecting block 6. Any material known to those skilled in the art that can accommodate coolant can be used. Those skilled in the art can select and adjust according to specific application conditions and product requirements. The bottom plate 4 is preferably made of a heat-conducting material.

[0076] It should be noted that the various embodiments of this application can be arbitrarily combined into new embodiments, provided that the solutions do not conflict and the technical solutions can coexist.

[0077] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An immersion battery liquid-cooled enclosure, characterized by: It includes a housing (1) for connecting to the battery cell (3) and a seal (2). The seal (2) is connected to the upper part of the housing (1) so that the housing (1) can be sealed to the battery cell (3). The housing (1) and the seal (2) together form a cooling cavity (11) with the battery cell (3). One end of the housing (1) is provided with a coolant inlet (8) and the other end of the housing (1) is provided with a coolant outlet (9).

2. The immersion battery liquid-cooled tank according to claim 1, characterized in that: The housing (1) includes a bottom plate (4), a side plate (5) and a connecting block (6). The side plate (5) is connected to the bottom plate (4), and 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). A cavity (7) is formed between the connecting block (6), the side plate (5) and the bottom plate (4). A battery cell (10) for connecting to the battery cell (3) is provided on the connecting block (6). The battery cell (10) is connected to the cavity (7). The connecting blocks (6) between the battery cells (10) are called partition plates (12).

3. The immersion battery liquid-cooled cabinet according to claim 2, characterized in that: The sealing element (2) includes a first sealing element (14) and a second sealing element. The first sealing element (14) includes a sealing horizontal plate (15) and a sealing vertical plate (16). The sealing horizontal plate (15) is connected to the sealing vertical plate (16). The sealing horizontal plate (15) is located on the connecting block (6). The sealing vertical plate (16) fits against the outer wall of the battery cell (3). The second sealing element has a second groove, which cooperates with the partition plate (12).

4. The immersion battery liquid-cooled cabinet according to claim 2, characterized in that: The connecting block (6) has a first groove (13) near the side plate (5). The first groove (13) communicates with the cooling cavity (11) and the first grooves (13) communicate with each other.

5. The immersion battery liquid-cooled cabinet according to claim 2, characterized in that: The connecting block (6) has a first groove (13) between the battery cells (10) and the first groove (13) communicates with the cooling cavity (11) and the first groove (13) communicates with each other.

6. The immersion battery liquid-cooled cabinet according to claim 4 or 5, characterized in that: The cross-sectional width of the first groove (13) is much larger than the cross-sectional width of the partition plate (12).

7. The immersion battery liquid-cooled cabinet according to claim 1, characterized in that: The coolant inlet (8) and the coolant outlet (9) are arranged diagonally on the housing (1).

8. An immersion liquid-cooled battery, characterized by: It includes a battery cell (3) and an immersion battery liquid cooling box as described in any one of claims 1-7, wherein the battery cell (3) is connected to the immersion battery liquid cooling box.

9. The submersible liquid-cooled battery of claim 8, wherein: The immersion battery liquid cooling box includes a box body (1), the box body (1) includes a connecting block (6), the height of the upper end of the battery cell (3) is less than the height of the upper side of the box body (1), and the height of the upper end of the battery cell (3) is greater than the height of the upper side of the connecting block (6).

10. The submersible liquid-cooled battery of claim 9, wherein: There is a second gap between the lower end of the battery cell (3) and the bottom end of the housing (1).

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