Battery module

Abstract

The utility model belongs to the technical field of power batteries, and particularly relates to a battery module. Comprising a battery box, a liquid cooling box and a cooling cover plate, the battery box 1 is provided with a naked battery cell, the upper surface of the naked battery cell is provided with a positive pole lug and a negative pole lug, the positive pole lug and the negative pole lug are mutually symmetrical about the midpoint of the upper surface of the naked battery cell, the upper surface of the naked battery cell is provided with a short pin hole, and the liquid cooling box is provided with a cooling cover plate. And a honeycomb partition plate is arranged in the battery box. The utility model provides the battery module which is convenient to disassemble, can improve the stability of the battery cell, effectively insulates heat and cools the battery cell, and is in zero contact with the battery cell.

Description

Technical Field

[0001] The utility model belongs to the technical field of power batteries, and specifically refers to a battery module. Background Art

[0002] At present, battery modules are usually composed of multiple single battery cells. At present, square batteries are widely used in the field of electric vehicles because of their high capacity, simple structure, high safety and stability. However, during the use of the battery, the battery will gradually loosen due to the high-speed movement of the car, causing the battery cell to be damaged. The damaged battery cell is not easy to disassemble and maintain. At the same time, the battery cell will cause thermal runaway due to excessive temperature, so the battery cell needs to be insulated and cooled. Therefore, the utility model provides a battery module that is easy to disassemble, can also improve the stability of the battery cell, effectively insulate and cool the battery cell, and has zero contact with the battery cell. Utility Model Content

[0003] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a battery module which is easy to disassemble, can also improve the stability of the battery cell, effectively insulate and cool the battery cell, and has zero contact with the battery cell.

[0004] The technical solution adopted by the utility model is as follows: a battery module proposed by the utility model includes a battery box, a liquid cooling box, and a cooling cover plate. The battery box is provided with a bare battery cell, a positive electrode ear is provided on the upper surface of the bare battery cell, a negative electrode ear is provided on the upper surface of the bare battery cell, the positive electrode ear and the negative electrode ear are symmetrical to each other at the midpoint of the upper surface of the bare battery cell, a short pin hole is provided on the upper surface of the bare battery cell, a honeycomb partition is provided inside the battery box, a triangular prism is fixedly connected to the inner wall of the battery box, a long pin hole is provided on the upper surface of the triangular prism, and the long pin hole and the short pin hole are provided with a fixed A fixing pin, a cover plate is provided on the upper surface of the bare battery cell, a fixing block extending downward is provided on one side of the cover plate, a locking block extending downward is provided on the end of the cover plate away from the fixing block, the cover plate is movably connected to the locking block, a rotating bolt is fixedly connected to the cover plate, the locking block is movably connected to the rotating bolt, a positive pole is provided on the upper surface of the cover plate, a negative pole is provided on the upper surface of the cover plate, the positive pole and the negative pole are symmetrically arranged with respect to the center of the cover plate, a fixing hole is provided on the side wall of the battery box close to the fixing block, and a locking hole is provided on the side wall of the battery box close to the locking block.

[0005] A battery box groove is provided inside the liquid cooling box, and the battery box groove is the same size as the battery box base. A liquid inlet hole is provided on the upper surface of the liquid cooling box, a liquid discharge hole is provided on the side wall of the liquid cooling box, a cover plate rotating column is fixedly connected to the upper surface of the liquid cooling box, and a magnetic strip is provided on the upper surface of the liquid cooling box.

[0006] The cooling cover plate is provided with a cooling hole, and the cooling hole penetrates the cooling cover plate. The cooling cover plate is movably connected to the cooling cover plate rotating column, and a fan is fixedly connected to the cooling cover plate on the side away from the cooling cover plate rotating column.

[0007] The liquid cooling box is provided with a cavity, and a high temperature resistant and heat absorbing liquid is filled inside. The liquid cooling box is a special die-cast aluminum box body, and the surface is more convenient for temperature dissipation.

[0008] The bare cell is provided with a concave triangular side on one side close to the triangular prism. When the bare cell is inserted into the battery box, the bare cell fits completely with the triangular prism, which limits both the front-to-back displacement and the left-to-right displacement of the bare cell.

[0009] Furthermore, the positive electrode tab, the negative electrode tab and the positive electrode column, the negative electrode column are symmetrical in two up and down directions, and the fixing pin has three pins, two short and one long, the short ones play a fixing role, and the long ones play a positioning role.

[0010] Furthermore, the width of the interior of the liquid cooling box is the same as the length of the cover plate, and the length of the interior of the liquid cooling box is the same as the length of the exterior of the battery box.

[0011] Preferably, the magnetic strip is fixedly connected to the upper surface of the liquid cooling box and is of the same size. The cooling holes penetrate the cooling cover plate transversely and longitudinally, and are connected to each other for more effective heat dissipation and cooling.

[0012] The beneficial effects achieved by the utility model using the above structure are as follows: the utility model provides a battery module that is easy to disassemble, can also improve the stability of the battery cell, effectively insulate and cool the battery cell, and has zero contact with the battery cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of a battery module structure proposed by the utility model;

[0014] Figure 2 This is a schematic diagram of a battery module battery box structure proposed by the utility model;

[0015] Figure 3 This is a schematic diagram of the structure of a battery module liquid cooling box proposed by the utility model;

[0016] Figure 4 This is a schematic diagram of a battery module battery box structure proposed by the utility model;

[0017] Figure 5 This is a rear view of a battery module battery box proposed by the utility model;

[0018] Figure 6 This is a schematic diagram of the honeycomb partition structure proposed by the utility model;

[0019] Figure 7 This is a schematic diagram of the fixing pin structure proposed by the utility model.

[0020] Among them, 1. battery box, 2. liquid cooling box, 3. cooling cover, 4. bare battery cell, 401. positive pole ear, 402. negative pole ear, 403. short pin hole, 5. honeycomb partition, 6. triangular column, 7. long pin hole, 701. fixing pin, 8. cover, 801. fixing block, 802. locking block, 803. rotating bolt, 804. positive pole, 805. negative pole, 9. fixing hole, 10. locking hole, 11. battery box groove, 12. liquid inlet hole, 13. liquid discharge hole, 14. cooling cover rotating column, 15. magnetic strip, 16. cooling hole, 17. fan.

[0021] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0023] like Figure 1-Figure 7As shown, a battery module proposed by the utility model includes the battery box 1, the liquid cooling box 2, and the cooling cover plate 3. The battery box 1 is provided with a bare battery cell 4. The upper surface of the bare battery cell 4 is provided with a positive pole ear 401. The upper surface of the bare battery cell 4 is provided with a negative pole ear 402. The positive pole ear 401 and the negative pole ear 402 are symmetrical with each other at the midpoint of the upper surface of the bare battery cell 4. The upper surface of the bare battery cell 4 is provided with a short pin hole 403. The battery box 1 is provided with a honeycomb partition 5. The inner wall of the battery box 1 is fixedly connected with a triangular prism 6. The upper surface of the triangular prism 6 is provided with a long pin hole 7. The long pin hole 7 and the short pin hole 403 are provided with a fixing pin 701. The upper surface of the bare battery cell 4 is provided with a A cover plate 8, wherein a fixing block 801 extending downward is provided on one side of the cover plate 8, a locking block 802 extending downward is provided on one end of the cover plate 8 away from the fixing block 801, the cover plate 8 is movably connected to the locking block 802, a rotating bolt 803 is fixedly connected to the cover plate 8, the locking block 802 is movably connected to the rotating bolt 803, a positive pole 804 is provided on the upper surface of the cover plate 8, a negative pole 805 is provided on the upper surface of the cover plate 8, the positive pole 804 and the negative pole 805 are symmetrically arranged with respect to the center of the cover plate 8, a fixing hole 9 is provided on the side wall of the battery box 1 close to the fixing block 801, and a locking hole 10 is provided on the side wall of the battery box 1 close to the locking block 802.

[0024] The liquid cooling box 2 of the utility model is provided with a battery box 1 groove inside, and the battery box 1 groove is the same size as the battery box 1 base, the upper surface of the liquid cooling box 2 is provided with a liquid inlet hole 12, the side wall of the liquid cooling box 2 is provided with a liquid discharge hole 13, the upper surface of the liquid cooling box 2 is fixedly connected to a cover plate 8 rotating column, and the upper surface of the liquid cooling box 2 is provided with a magnetic strip 15.

[0025] The cooling cover plate 3 of the utility model is provided with a cooling hole 16, and the cooling hole 16 passes through the cooling cover plate 3. The cooling cover plate 3 is movably connected to the cooling cover plate rotating column 14. The cooling cover plate 3 is fixedly connected to a fan 17 on the side away from the cooling cover plate rotating column 14.

[0026] The liquid cooling box 2 of the utility model is provided with a cavity, and a high temperature resistant and heat absorbing liquid is filled inside. The liquid cooling box 2 is a special die-cast aluminum box body, and the surface is more convenient for temperature dissipation.

[0027] The bare battery cell 4 of the utility model is provided with a concave triangular side edge on one side close to the triangular prism 6. When the bare battery cell 4 is inserted into the battery box 1, the bare battery cell 4 is completely fitted with the triangular prism 6, which limits the front and rear displacement of the bare battery cell 4 as well as the left and right displacement.

[0028] The positive pole ear 401, the negative pole ear 402 and the positive pole column 804, the negative pole column 805 of the utility model are symmetrical in pairs. The fixing pin 701 has three pins, two short and one long. The short pins play a fixing role, and the long pins play a positioning role.

[0029] The width of the interior of the liquid cooling box 2 of the utility model is the same as the length of the cover plate 8 , and the length of the interior of the liquid cooling box 2 is the same as the length of the exterior of the battery box 1 .

[0030] The magnetic strip 15 of the utility model is fixedly connected to the upper surface of the liquid cooling box 2 and has the same size. The cooling hole 16 penetrates the cooling cover plate 3 horizontally and vertically, and is connected to each other for more effective heat dissipation and cooling.

[0031] When in use, the operator first inserts the bare battery cell 4 into the battery box 1 along the triangular column 6, then inserts the fixing pin 701 into the corresponding short pin hole 403 and the long pin hole 7, then connects the positive pole column 804 and the negative pole column 805 on the cover plate 8 with the positive pole ear 401 and the negative pole ear 402 in pairs, then puts the fixing block 801 into the corresponding fixing hole 9 for positioning, and then rotates the bolt 803 in a circular motion to put the locking block 802 into the locking hole 10 for locking, and then The installed battery box 1 is placed into the battery box groove 11 inside the liquid cooling box 2 for fixing. Finally, the cooling cover 3 and the liquid cooling box 2 are closed by the circular motion of the cooling cover rotating column 14. The magnetic strip 15 on the upper surface of the liquid cooling box 2 is attracted to the cooling cover 3. Finally, the fan 17 is used to make the high-temperature gas flow quickly in the cooling hole 16. The high-temperature resistant and heat-absorbing liquid in the liquid cooling box 2 will also absorb the high temperature in the battery box 1. At the same time, the liquid is separated from the battery cell, making the battery module safer and more stable.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

[0034] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A battery module, characterized in that: The invention comprises a battery box (1), a liquid cooling box (2), and a cooling cover plate (3), wherein the battery box (1) is provided with a bare battery cell (4), the upper surface of the bare battery cell (4) is provided with a positive pole ear (401), the upper surface of the bare battery cell (4) is provided with a negative pole ear (402), the positive pole ear (401) and the negative pole ear (402) are symmetrical with each other at the midpoint of the upper surface of the bare battery cell (4), the upper surface of the bare battery cell (4) is provided with a short pin hole (403), the battery box (1) is provided with a honeycomb partition plate (5), the inner wall of the battery box (1) is fixedly connected with a triangular prism (6), the upper surface of the triangular prism (6) is provided with a long pin hole (7), the long pin hole (7) and the short pin hole (403) are provided with a fixing pin (701), the upper surface of the bare battery cell (4) is provided with a cover plate (8), and the cover plate ( A fixing block (801) extending downward is provided on one side of the cover plate (8), a locking block (802) extending downward is provided on one end of the cover plate (8) away from the fixing block (801), the cover plate (8) is movably connected to the locking block (802), a rotating bolt (803) is fixedly connected to the cover plate (8), the locking block (802) is movably connected to the rotating bolt (803), a positive pole (804) is provided on the upper surface of the cover plate (8), a negative pole (805) is provided on the upper surface of the cover plate (8), the positive pole (804) and the negative pole (805) are symmetrically arranged with respect to the center of the cover plate (8), a fixing hole (9) is provided on the side wall of the battery box (1) close to the fixing block (801), and a locking hole (10) is provided on the side wall of the battery box (1) close to the locking block (802).

2. A battery module according to claim 1, characterized in that: The liquid cooling box (2) is provided with a battery box (1) groove inside, the battery box (1) groove is the same size as the battery box (1) base, the upper surface of the liquid cooling box (2) is provided with a liquid inlet hole (12), the side wall of the liquid cooling box (2) is provided with a liquid discharge hole (13), the upper surface of the liquid cooling box (2) is fixedly connected to a cover plate (8) rotating column, and the upper surface of the liquid cooling box (2) is provided with a magnetic strip (15).

3. A battery module according to claim 2, characterized in that: The cooling cover plate (3) is provided with a cooling hole (16), the cooling hole (16) passes through the cooling cover plate (3), the cooling cover plate (3) is movably connected to the cooling cover plate rotating column (14), and a fan (17) is fixedly connected to the side of the cooling cover plate (3) away from the cooling cover plate rotating column (14).

4. A battery module according to claim 3, characterized in that: The liquid cooling box (2) is provided with a cavity, and a high-temperature resistant and heat-absorbing liquid is filled inside. The liquid cooling box (2) is a specially made die-cast aluminum box body, and the surface is more convenient for temperature dissipation.

5. A battery module according to claim 4, characterized in that: The bare battery cell (4) is provided with an inwardly concave triangular side edge on one side close to the triangular prism (6); when the bare battery cell (4) is inserted into the battery box (1), the bare battery cell (4) and the triangular prism (6) are completely fitted together, thus limiting both the front-to-back displacement of the bare battery cell (4) and the left-to-right displacement of the bare battery cell (4).

6. A battery module according to claim 5, characterized in that: The positive electrode tab (401), the negative electrode tab (402), the positive electrode column (804), and the negative electrode column (805) are symmetrical in pairs. The fixing pin (701) has three pins, two short and one long. The short pins play a fixing role, and the long pins play a positioning role.

7. A battery module according to claim 6, characterized in that: The width of the interior of the liquid cooling box (2) is the same as the length of the cover plate (8), and the length of the interior of the liquid cooling box (2) is the same as the length of the exterior of the battery box (1).

8. A battery module according to claim 7, characterized in that: The magnetic strip (15) is fixedly connected to the upper surface of the liquid cooling box (2) and has the same size. The cooling holes (16) penetrate the cooling cover plate (3) transversely and penetrate the cooling cover plate (3) longitudinally. They are connected to each other to more effectively dissipate heat and cool down.

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