Heat dissipation device for battery energy storage

Abstract

The utility model discloses a heat dissipation device for battery energy storage, which comprises an integrated frame, a high-voltage box, a battery module and a liquid cooling circulating pump are arranged in the integrated frame, a water cooling plate is arranged on the outer surface of the battery module, two adapter pipes are mounted on one side of the water cooling plate, and the adapter pipes are connected with the integrated frame. A water outlet end and a water inlet end of the liquid cooling circulating pump are respectively provided with a circulating pipe I and a circulating pipe II, and the circulating pipe I and the circulating pipe II are respectively provided with a plurality of branch pipes. According to the utility model, the eight battery modules are connected in series, each battery module consists of 52 battery cells which are connected in series, the capacity of 280Ah and 314Ah of the compatible battery cells are compatible, the battery cells with higher rate capability are used, the output power of the battery is improved to 1C, the power is improved, the heat is also improved, the heat generated by the battery modules is quickly taken away by the liquid cooling circulating pump through liquid circulation, and the battery module is more energy-saving and environment-friendly. And therefore, the output power is improved, and the safety risk caused by high temperature is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of battery energy storage technology, and in particular relates to a heat dissipation device for battery energy storage. Background Technology

[0002] The energy storage capacity of a single lithium battery cell is limited, and it often cannot meet the power supply requirements of electrical products when used alone. By connecting several to hundreds of lithium battery cells in series and parallel to form one or more battery modules, the power of multiple lithium batteries can be collected and integrated together for output, which can greatly improve the energy storage and power supply of lithium batteries and meet the power needs of products.

[0003] When multiple lithium batteries are integrated together, the heat generated during operation is difficult to dissipate in time. Prolonged exposure to high temperatures will shorten the lifespan of the battery module and may even cause safety issues due to excessive temperature. Utility Model Content

[0004] This utility model addresses the problems in the prior art by proposing the following technical solution:

[0005] A heat dissipation device for battery energy storage includes an integrated frame. The integrated frame houses a high-voltage box, a battery module, and a liquid-cooled circulation pump. A water-cooled plate is installed on the outer surface of the battery module. Two adapter pipes are installed on one side of the water-cooled plate. Circulation pipe one and circulation pipe two are installed at the outlet and inlet of the liquid-cooled circulation pump, respectively. Both circulation pipe one and circulation pipe two are equipped with several branch pipes. The water-cooled plate is connected to circulation pipe one and circulation pipe two through the two adapter pipes and the branch pipes, respectively. Two mutually closed protective covers are installed at the connection points.

[0006] As a preferred embodiment of the above technical solution, a slot is provided on one side of the protective cover, and a sealing gasket that matches the slot is fixedly connected to the other side. A fixing seat is fixedly connected to the outer surface of the protective cover, and a fixing bolt is threaded onto the fixing seat.

[0007] As a preferred embodiment of the above technical solution, the inner wall of the protective cover is fixedly connected with a retaining seat, and the outer rings of the adapter pipe and the branch pipe are respectively fixedly fitted with retaining ring one and retaining ring two, and retaining ring one and retaining ring two are respectively inserted into the two retaining seats.

[0008] As a preferred embodiment of the above technical solution, the inner wall of the card holder is provided with a second sealing gasket, and the two second sealing gaskets are respectively attached to the first retaining ring and the second retaining ring.

[0009] As a preferred embodiment of the above technical solution, a sleeve is snapped between the two protective covers. One end of the sleeve located inside the protective cover has a through-hole, and a piston is installed inside the sleeve. A connecting rod is fixedly connected to one side of the piston, and a baffle is fixedly connected to one end of the connecting rod through the sleeve.

[0010] The beneficial effects of this utility model are as follows:

[0011] 1. This utility model consists of 8 battery modules connected in series. Each battery module consists of 52 cells connected in series, and is compatible with cell capacities of 280Ah and 314Ah. At the same time, it uses cells with higher rate performance to increase the battery output power to 1C. With the increase in power, the heat generation will also increase. The liquid cooling circulation pump quickly removes the heat generated by the battery module through liquid circulation, so that it will not operate in a high-temperature environment for a long time. While increasing the output power, it reduces the safety risks caused by high temperature.

[0012] 2. This utility model reduces the footprint of lithium batteries by integrating them into parallel applications, thereby reducing land use costs.

[0013] 3. With the cooperation of the two card holders and the first and second retaining rings, the protective cover will form a cavity at the connection between the adapter pipe and the branch pipe. When a leak occurs at the connection, the coolant will not leak to the battery module immediately, thus avoiding a short circuit. When the coolant leaks into the cavity, the pressure inside the cavity will push the piston to move away from the connection, which will then push the baffle away from the sleeve through the connecting rod. This makes it easier for maintenance personnel to find the leak point in time and repair it. Attached Figure Description

[0014] Figure 1 The diagram shown is a structural schematic of the heat dissipation device for battery energy storage in the embodiment;

[0015] Figure 2 The diagram shown is a structural schematic of the battery module in the embodiment;

[0016] Figure 3 The diagram shown is a schematic representation of the branch pipe in the embodiment;

[0017] Figure 4 The diagram shown is a structural schematic of the protective cover in the embodiment.

[0018] Explanation of reference numerals in the attached figures:

[0019] 10. Integrated frame; 12. High voltage box; 13. Battery module; 131. Water-cooled plate; 132. Adapter pipe; 133. Retaining ring one; 14. Liquid-cooled circulating pump; 15. Circulation pipe one; 16. Circulation pipe two; 17. Branch pipe; 171. Retaining ring two; 20. Protective cover; 21. Slot; 22. Sealing gasket one; 23. Card seat; 24. Sealing gasket two; 25. Fixing seat; 26. Sleeve; 27. Piston; 28. Connecting rod; 29. ​​Baffle. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0021] Example

[0022] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the battery energy storage heat dissipation device includes an integrated frame 10. The integrated frame 10 is equipped with a high-voltage box 12, a battery module 13 and a liquid-cooled circulation pump 14. The outer surface of the battery module 13 is provided with a water-cooled plate 131. Two adapter pipes 132 are installed on one side of the water-cooled plate 131. The outlet and inlet of the liquid-cooled circulation pump 14 are respectively equipped with circulation pipe one 15 and circulation pipe two 16. Both circulation pipe one 15 and circulation pipe two 16 are equipped with several branch pipes 17. The water-cooled plate 131 is connected to circulation pipe one 15 and circulation pipe two 16 through the two adapter pipes 132 and the branch pipes 17 respectively, and two mutually closed protective covers 20 are installed at the connection.

[0023] Specifically, an integrated rack 10 consists of 8 battery modules 13 connected in series to form a 1331.2V battery system with a total capacity of 372.7KWh or 417.9KWh. A battery module 13 consists of 52 cells connected in series to form a 166.4V battery module, compatible with cell capacities of 280Ah and 314Ah. At the same time, it uses cells with higher rate performance to increase the battery output power to 1C. With the increase in power, its heat generation will also increase. The liquid-cooled circulation pump 14 removes the heat of the battery module 13 through liquid circulation. The high-voltage box 12 contains protection devices such as pre-charge, fuses, and circuit breakers, as well as acquisition devices such as Hall effect sensors and NTC sensors. It is also equipped with a DC power supply module to supply power to the BMS to maintain BMS operation.

[0024] like Figure 3 As shown, a slot 21 is provided on one side of the protective cover 20, and a sealing gasket 22 that is compatible with the slot 21 is fixedly connected to the other side. A fixing seat 25 is fixedly connected to the outer surface of the protective cover 20, and a fixing bolt is threaded onto the fixing seat 25.

[0025] Specifically, the two protective covers 20 can be easily disassembled and assembled by removing and installing the fixing bolts.

[0026] like Figure 3 and Figure 4 As shown, the inner wall of the protective cover 20 is fixedly connected to the card seat 23, and the outer rings of the adapter pipe 132 and the branch pipe 17 are respectively fixedly fitted with retaining ring 133 and retaining ring 271, which are respectively inserted into the two card seats 23.

[0027] Specifically, with the cooperation of the two card holders 23 with the retaining ring 133 and the retaining ring 271, the protective cover 20 will form a cavity at the connection between the adapter pipe 132 and the branch pipe 17. When a leak occurs at the connection, the coolant will not leak to the battery module 13 immediately, thus avoiding a short circuit.

[0028] like Figure 3 As shown, the inner wall of the card holder 23 is provided with a second sealing gasket 24, and the two sealing gaskets 24 are respectively attached to the first retaining ring 133 and the second retaining ring 171.

[0029] Specifically, sealing gasket 22 and sealing gasket 24 prevent coolant from leaking out of the gaps after leakage, ensuring the airtightness of the two protective covers 20.

[0030] like Figure 3 and Figure 4 As shown, a sleeve 26 is snapped between the two protective covers 20. One end of the sleeve 26 inside the protective cover 20 has a through-hole, and a piston 27 is installed inside the sleeve 26. A connecting rod 28 is fixedly connected to one side of the piston 27, and a baffle 29 is fixedly connected to one end of the connecting rod 28 through the sleeve 26.

[0031] Specifically, when coolant leaks into the cavity, the pressure inside the cavity will push the piston 27 to move away from the connection point, which in turn will push the baffle 29 away from the sleeve 26 through the connecting rod 28, making it easier for maintenance personnel to find the leak point in time and repair it.

[0032] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. Heat sink for battery energy storage comprising an integrated rack (10), characterized in that: The inside of the integrated frame (10) is provided with a high-pressure box (12), a battery module (13) and a liquid cooling circulating pump (14), the outer surface of the battery module (13) is provided with a water cooling plate (131), one side of the water cooling plate (131) is mounted with two adapter pipes (132), the water outlet end and the water inlet end of the liquid cooling circulating pump (14) are respectively mounted with circulating pipe one (15) and circulating pipe two (16), the circulating pipe one (15) and the circulating pipe two (16) are both mounted with a plurality of branch pipes (17), the water cooling plate (131) is communicated with the circulating pipe one (15) and the circulating pipe two (16) through the two adapter pipes (132) and the branch pipes (17), and two protective covers (20) which are closed to each other are mounted at the connection.

2. The heat dissipating device for battery energy storage according to claim 1, characterized by, One side of the protective cover (20) is provided with a clamping groove (21), the other side is fixedly connected with a sealing gasket one (22) matched with the clamping groove (21), and the outer surface of the protective cover (20) is fixedly connected with a fixing seat (25), and the fixing seat (25) is screwed with a fixing bolt.

3. The heat dissipating device for battery energy storage according to claim 1, characterized in that, The inner wall of the protective cover (20) is fixedly connected with a clamping seat (23), the outer circle of the adapter pipe (132) and the branch pipe (17) is respectively fixedly sleeved with a retainer one (133) and a retainer two (171), and the retainer one (133) and the retainer two (171) are respectively inserted with two clamping seats (23).

4. The heat dissipating device for battery energy storage according to claim 3, characterized in that, The inner wall of the clamping seat (23) is provided with a sealing gasket two (24), and two sealing gaskets two (24) are respectively attached to the retainer one (133) and the retainer two (171).

5. The heat dissipating device for battery energy storage according to claim 1, wherein The sleeve (26) is clamped between the two protective covers (20), one end of the sleeve (26) inside the protective cover (20) is provided with a through hole, and the inside of the sleeve (26) is provided with a piston (27), one side of the piston (27) is fixedly connected with a connecting rod (28), one end of the connecting rod (28) penetrates the sleeve (26) and is fixedly connected with a baffle (29).

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