Double-layer water-cooling energy storage battery pack

Abstract

The utility model discloses a double-layer water-cooling energy storage battery pack, which is characterized in that a sheet metal part is welded on the inner bottom surface of a box body, a square tube beam is welded on the inner surface of the left side wall of the box body, a two-layer bracket is fixed on the square tube beam, two cushions are separated from each other up and down, a water-cooling plate is adhered on each cushion, and the water-cooling plate is fixed on the square tube beam. The left tail ends of the upper water cooling plate and the lower water cooling plate are connected through a left water cooling pipeline, the right tail ends of the upper water cooling plate and the lower water cooling plate are connected through a right water cooling pipeline, heat conduction silica gel pads are placed on the upper water cooling plate and the lower water cooling plate respectively, a buffering pad located on the lower portion is pasted on the sheet metal part, and a first module is placed on the heat conduction silica gel pad located on the lower portion. The first module is fixed with the sheet metal part together, a buffer pad located on the upper portion is pasted on the second-layer support, a second module is placed on the heat conduction silica gel pad located on the upper portion, and the second module is fixed with the second-layer support together. According to the utility model, the metal plate box body is adopted, so that the structural strength is ensured, and the condition of low cost is also ensured.

Description

Technical field:

[0001] The utility model relates to a double-layer water-cooled energy storage battery pack, which belongs to the technical field of new energy storage technology. Background technology:

[0002] With the development of new energy, electric vehicles and energy storage have become two development routes of new energy. Energy storage has become an indispensable industry, using new energy such as solar energy, wind energy, and ocean energy to convert them into electrical energy and store them, which has become the development direction of an era.

[0003] Existing water-cooled energy storage battery packs are all single-layer battery packs with profile structures, which are always unavoidable shortcomings in terms of energy density integration and structural strength.

[0004] Therefore, it is necessary to improve the existing technology to solve the shortcomings of the existing technology. Utility model content:

[0005] The utility model provides a double-layer water-cooled energy storage battery pack in order to solve the problems existing in the above-mentioned prior art. The utility model uses a lighter box, integrates a higher energy density, and also uses a water cooling solution to ensure the consistency of the battery cells.

[0006] The technical scheme adopted by the utility model includes: a double-layer water-cooled structure energy storage battery system, including a box body, a box cover, a second-layer bracket, a first module, a second module, a thermal conductive silicone pad, a water-cooling plate, a buffer pad, a left water-cooling pipeline, a right water-cooling pipeline, an electrical plug-in installed on the front side wall of the box body, and a fastener for fixing the box body and the box cover together, a sheet metal part is welded on the inner bottom surface of the box body, a square tube beam is welded on the inner surface of the left side wall of the box body, the second-layer bracket is fixed on the square tube beam, the buffer pad includes two spaced apart from each other, and a water Cold plate, the left ends of the upper and lower water-cooling plates are connected by a left water-cooling pipeline, and the right ends of the upper and lower water-cooling plates are connected by a right water-cooling pipeline, and thermally conductive silicone pads are respectively placed between the left water-cooling pipeline and the right water-cooling pipeline on the upper and lower water-cooling plates, and a buffer pad located below is pasted on the sheet metal, and a first module is placed on the thermally conductive silicone pad located below, and the first module is fixed to the sheet metal together, and a buffer pad located above is pasted on the second-layer bracket, and a second module is placed on the thermally conductive silicone pad located above, and the second module is fixed to the second-layer bracket.

[0007] Furthermore, the left water-cooling pipeline includes a first left SAE quick-connect connector and a second left SAE quick-connect connector respectively welded to the left ends of the upper and lower water-cooling plates, and a first left PVC water pipe and a second left PVC water pipe respectively connected to the first left SAE quick-connect connector and the second left SAE quick-connect connector, the other end of the first left PVC water pipe is connected to a third left SAE quick-connect connector, the other end of the second left PVC water pipe is connected to a left three-way water-cooling connector, and the third left SAE quick-connect connector and the left three-way water-cooling connector are plugged and installed together.

[0008] Furthermore, the right water-cooling pipeline includes a first right SAE quick-plug connector and a second right SAE quick-plug connector respectively welded to the right ends of the upper and lower water-cooling plates, and a first right PVC water pipe and a second right PVC water pipe respectively connected to the first right SAE quick-plug connector and the second right SAE quick-plug connector, the other end of the first right PVC water pipe is connected to a third right SAE quick-plug connector, the other end of the second right PVC water pipe is connected to a right three-way water-cooling connector, and the third right SAE quick-plug connector and the right three-way water-cooling connector are plugged and installed together.

[0009] Furthermore, a mounting ear is welded to the right end of the bottom wall of the box body, and a lifting ear is welded on the outer surface of the right side wall of the box body and at a position above the mounting ear.

[0010] Furthermore, the left three-way water-cooling joint and the right three-way water-cooling joint both extend beyond the front side wall of the box body.

[0011] Furthermore, the second-layer bracket is formed by splicing and welding a square tube mounting beam and a sheet metal reinforcement rib.

[0012] Furthermore, the sheet metal part has the same structure as the second-layer bracket.

[0013] Furthermore, the thermal conductivity of the thermally conductive silicone pad is 1.5 (W / (m·K).

[0014] The utility model has the following beneficial effects:

[0015] 1. Lightweight: Using skin and square tube structural parts, compared with profile structure, it uses less materials, has lower cost and concentrated energy density;

[0016] 2. Reliability: Add water cooling to ensure the operating temperature and consistency of the battery module, extend the service life of the battery module, and be suitable for outdoor high-temperature energy storage;

[0017] 3. Sheet metal parts and two-layer brackets are used as support parts to accommodate double-layer modules. Description of the drawings:

[0018] Figure 1This is a schematic diagram of the exploded view of the double-layer water-cooled structure energy storage battery system of the utility model.

[0019] Figure 2 This is a schematic diagram of the assembly of the double-layer water-cooled structure energy storage battery system of the utility model.

[0020] Figure 3 This is a schematic diagram of the box.

[0021] Figure 4 It is a partial schematic diagram of the double-layer water-cooled structure energy storage battery system of the utility model.

[0022] Figure 5 This is a schematic diagram of the second-layer bracket. Specific implementation method:

[0023] The utility model is further described below in conjunction with the accompanying drawings.

[0024] The utility model discloses a double-layer water-cooled structure energy storage battery system, comprising a box body 1, a box cover 2, a second-layer bracket 3, a first module 4, a second module 5, a thermal conductive silicone pad 6, a water-cooling plate 7, a buffer pad 8, a left water-cooling pipeline 9, a right water-cooling pipeline 10, an electrical plug-in 11 installed on the front side wall of the box body 1, and a fastener 16 for fixing the box body 1 and the box cover 2 together.

[0025] The box body 1 is a frame structure formed by welding a box body skin 17. A sheet metal part 12 is welded on the inner bottom surface of the box body 1, a square tube beam 15 is welded on the inner surface of the left side wall of the box body 1, a mounting ear 13 is welded at the right end of the bottom wall of the box body 1, and a lifting ear 14 is welded on the outer surface of the right side wall of the box body 1 and at a position above the mounting ear 13.

[0026] The buffer pad 8 includes two buffer pads spaced apart from each other, and a water cooling plate 7 is adhered to each buffer pad 8. The left ends of the upper and lower water cooling plates 7 are connected by a left water cooling pipeline 9, and the right ends of the upper and lower water cooling plates 7 are connected by a right water cooling pipeline 10.

[0027] The left water cooling pipeline 9 includes a first left SAE quick-plug connector 90 and a second left SAE quick-plug connector 94 respectively welded to the left ends of the upper and lower water cooling plates 7, and a first left PVC water pipe 93 and a second left PVC water pipe 95 respectively connected to the first left SAE quick-plug connector 90 and the second left SAE quick-plug connector 94. The other end of the first left PVC water pipe 93 is connected to a third left SAE quick-plug connector 92, and the other end of the second left PVC water pipe 95 is connected to a left three-way water cooling connector 91, and the third left SAE quick-plug connector 92 and the left three-way water cooling connector 91 are plugged and installed together.

[0028] The right water cooling pipeline 10 includes a first right SAE quick-plug connector 100 and a second right SAE quick-plug connector 104 respectively welded to the right ends of the upper and lower water cooling plates 7, and a first right PVC water pipe 103 and a second right PVC water pipe 105 respectively connected to the first right SAE quick-plug connector 100 and the second right SAE quick-plug connector 104. The other end of the first right PVC water pipe 103 is connected to a third right SAE quick-plug connector 102, and the other end of the second right PVC water pipe 105 is connected to a right three-way water cooling connector 101, and the third right SAE quick-plug connector 102 and the right three-way water cooling connector 101 are plugged and installed together.

[0029] The left three-way water-cooling joint 91 and the right three-way water-cooling joint 101 both extend beyond the front of the front side wall of the box body 1 .

[0030] Thermally conductive silicone pads 6 are placed between the left water cooling pipeline 9 and the right water cooling pipeline 10 on the upper and lower water cooling plates 7 .

[0031] The second-layer bracket 3 is formed by splicing and welding a square tube mounting beam 31 and a sheet metal reinforcing rib 32, wherein both sides of the sheet metal reinforcing rib 32 play a supporting role.

[0032] The sheet metal part 12 has the same structure as the second-layer bracket 3, wherein the sheet metal part 12 is welded to the inner bottom surface of the box body 1, and a buffer pad 8 is pasted on the sheet metal part 12. The first module 4 is placed on the thermal conductive silicone pad 6 located below, and the first module 4 is fixed to the sheet metal part 12 by bolts.

[0033] The second-layer bracket 3 is fixed to the square tube beam 15 by bolts. A buffer pad 8 is pasted on the second-layer bracket 3 and a second module 5 is placed on the thermal conductive silicone pad 6.

[0034] In the double-layer water-cooled energy storage battery system of the utility model, cooling water flows in from the left three-way water-cooling joint 91, and then flows into the first left PVC water pipe 93 and the second left PVC water pipe 95 respectively. The cooling water flowing into the first left PVC water pipe 93 flows into the first right PVC water pipe 103 after passing through the water-cooling plate 7 located at the upper layer, and then converges to the right three-way water-cooling joint 101 and flows out. The cooling water flowing into the second left PVC water pipe 95 flows into the second right PVC water pipe 105 after passing through the water-cooling plate 7 at the lower layer, and then converges to the right three-way water-cooling joint 101 and flows out.

[0035] The utility model adopts a sheet metal box body, which ensures structural strength and low cost. At the same time, the utility model adopts cold-rolled square tubes and sheet metal steel as the box body support and reinforcement structure, which can accommodate double-layer modules.

[0036] The above is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements without departing from the principle of the present invention, and these improvements should also be regarded as within the protection scope of the present invention.

Claims

1. A double-layer water-cooled energy storage battery pack, characterized in that: The invention comprises a box body (1), a box cover (2), a second-layer bracket (3), a first module (4), a second module (5), a thermally conductive silicone pad (6), a water-cooling plate (7), a buffer pad (8), a left water-cooling pipeline (9), a right water-cooling pipeline (10), an electrical plug-in (11) installed on the front side wall of the box body (1), and a fastener (16) for fixing the box body (1) and the box cover (2) together. A sheet metal part (12) is welded on the inner bottom surface of the box body (1), a square tube beam (15) is welded on the inner surface of the left side wall of the box body (1), the second-layer bracket (3) is fixed on the square tube beam (15), the buffer pad (8) comprises two buffer pads (8) spaced apart from each other, a water-cooling plate (7) is adhered to each buffer pad (8), and the upper and lower water-cooling plates (7) are welded to each buffer pad (8). The left end of the cold plate (7) is connected via a left water cooling pipe (9), and the right ends of the upper and lower water cooling plates (7) are connected via a right water cooling pipe (10). A thermally conductive silicone pad (6) is placed between the left water cooling pipe (9) and the right water cooling pipe (10) on the upper and lower water cooling plates (7), respectively. A buffer pad (8) located below is adhered to the sheet metal (12), and a first module (4) is placed on the thermally conductive silicone pad (6) located below. The first module (4) is fixed to the sheet metal (12). An upper buffer pad (8) is adhered to the second-layer bracket (3), and a second module (5) is placed on the upper thermally conductive silicone pad (6). The second module (5) is fixed to the second-layer bracket (3).

2. The double-layer water-cooled energy storage battery pack according to claim 1, characterized in that: The left water cooling pipeline (9) comprises a first left SAE quick-connect joint (90) and a second left SAE quick-connect joint (94) respectively welded to the left ends of the upper and lower water cooling plates (7), and a first left PVC water pipe (93) and a second left PVC water pipe (95) respectively connected to the first left SAE quick-connect joint (90) and the second left SAE quick-connect joint (94); the other end of the first left PVC water pipe (93) is connected to a third left SAE quick-connect joint (92); the other end of the second left PVC water pipe (95) is connected to a left three-way water cooling joint (91); the third left SAE quick-connect joint (92) and the left three-way water cooling joint (91) are plugged and installed together.

3. The double-layer water-cooled energy storage battery pack according to claim 2, characterized in that: The right water cooling pipeline (10) comprises a first right SAE quick-connect joint (100) and a second right SAE quick-connect joint (104) respectively welded to the right ends of the upper and lower water cooling plates (7), and a first right PVC water pipe (103) and a second right PVC water pipe (105) respectively connected to the first right SAE quick-connect joint (100) and the second right SAE quick-connect joint (104); the other end of the first right PVC water pipe (103) is connected to a third right SAE quick-connect joint (102); the other end of the second right PVC water pipe (105) is connected to a right three-way water cooling joint (101); the third right SAE quick-connect joint (102) and the right three-way water cooling joint (101) are plugged and installed together.

4. The double-layer water-cooled energy storage battery pack according to claim 1, characterized in that: A mounting ear (13) is welded to the right end of the bottom wall of the box body (1), and a lifting ear (14) is welded to the outer surface of the right side wall of the box body (1) at a position above the mounting ear (13).

5. The double-layer water-cooled energy storage battery pack according to claim 2, characterized in that: The left three-way water cooling joint (91) and the right three-way water cooling joint (101) both extend beyond the front of the front side wall of the box body (1).

6. The double-layer water-cooled energy storage battery pack according to claim 1, characterized in that: The second-layer bracket (3) is formed by splicing and welding a square tube mounting beam (31) and a sheet metal reinforcing rib (32).

7. The double-layer water-cooled energy storage battery pack according to claim 1, characterized in that: The sheet metal part (12) has the same structure as the second-layer bracket (3).

8. The double-layer water-cooled energy storage battery pack according to claim 1, characterized in that: The thermal conductivity of the thermally conductive silica gel pad (6) is 1.5 (W / (m·K)).

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