Energy storage special large-capacity battery cell liquid cooling plate

Abstract

The utility model belongs to liquid cooling plate technical field especially, it is a kind of large capacity electric core liquid cooling plate of energy storage special, including liquid cooling plate subassembly, the lower surface fixed mounting of liquid cooling plate subassembly is the load-bearing structure subassembly with the plane of lower surface, the load-bearing structure subassembly realizes the action of load bearing to liquid cooling plate subassembly, increases structural strength and protection. This large capacity electric core liquid cooling plate of energy storage special, liquid cooling plate subassembly can play heat exchange, isothermal and the heat performance effect such as uniform flow to battery module, and by setting the load-bearing structure subassembly, liquid cooling plate subassembly can play load bearing, increase structural strength and protect the effect of liquid cooling plate flow channel, while whole adopts all-aluminum integral brazing process, realizes the effect of lightweight and compact structure, more can reduce the weight of entire liquid cooling plate, more without such as steel structure easy to appear structural separation failure, corrosion and other defects, to improve the safety of entire energy storage battery from side.

Description

Technical Field

[0001] This utility model relates to the field of liquid cooling plate technology, and in particular to a liquid cooling plate for large-capacity battery cells for energy storage. Background Technology

[0002] A battery pack refers to a complete power system that integrates one or more battery modules, along with corresponding battery management systems, thermal management systems, electrical systems, structural components, and housings, to form a specific voltage, capacity, and function.

[0003] As a core component of the battery pack, the liquid cooling plate is a metal plate-shaped device with an internal flow channel structure. The coolant flows within the flow channel and exchanges heat with the battery through the metal plate wall, thereby removing the heat generated by the battery or heating the battery to a suitable temperature.

[0004] Existing battery pack brackets, most of which are conventional cold-plate structures, are composed of steel / iron brackets and aluminum cold-plates. They contain a lot of iron parts, which cannot meet the requirements of long-term sea transport environments. They are prone to rust and vibration cracking, and are particularly heavy, which is not conducive to the overall lightweight energy storage assembly and use of battery packs. Utility Model Content

[0005] Based on existing technical problems, this utility model proposes a liquid cooling plate for large-capacity battery cells specifically for energy storage.

[0006] This utility model proposes a liquid cooling plate for large-capacity battery cells specifically for energy storage, including a liquid cooling plate assembly.

[0007] A load-bearing structural component with a flat lower surface is fixedly installed on the lower surface of the liquid cooling plate assembly. The load-bearing structural component performs the functions of bearing the load of the liquid cooling plate assembly, increasing the structural strength, and protecting it.

[0008] Preferably, the liquid cooling plate assembly consists of an upper cover plate and a flow channel plate arranged from top to bottom, and the upper cover plate and the flow channel plate are fixedly connected by hexagonal nut posts with rivets arranged at the four perimeter.

[0009] The above technical solution uses hexagonal nut posts with rivets to fix the four edges, which can not only ensure the sealing, but also prevent the liquid holding plate from loosening due to vibration.

[0010] Preferably, a crossbeam is also fixedly installed on the upper surface of the cover plate in the width direction by means of rivet nuts and rivet screws.

[0011] With the above technical solution, the crossbeam can be installed at both ends or in the middle of the upper cover plate. These two positions are exactly on the front and rear seats of the vehicle body, without affecting the overall height of the vehicle or the installation height of the seats.

[0012] Preferably, the load-bearing structure component consists of load-bearing fins and a base plate arranged from top to bottom. The load-bearing fins are fixed to the upper surface of the base plate, and then the flow channel plate is sleeved and pressed tightly. Finally, the hexagonal nut post extends from the periphery of the upper cover plate to the lower surface of the base plate and is then riveted and locked.

[0013] With the above technical solution, the load-bearing fins are fixed on the base plate, which makes it easy to fix them. Then, the flow channel plate is placed on the load-bearing fins and finally riveted and locked.

[0014] Preferably, the upper cover plate is provided with an inlet and an outlet on both sides of one end. After the heat exchange medium enters from the inlet, it flows through the flow channel on the upper surface of the flow channel plate to complete the heat exchange action and then flows out from the outlet.

[0015] The above technical solutions facilitate the integrated control of heat exchange.

[0016] Preferably, the load-bearing fins are arranged in a cross pattern to form a corrugated shape.

[0017] Through the above technical solutions, corrugated load-bearing fins have the advantages of load-bearing capacity, increased structural strength, protection of liquid cooling plates, lightweight, compact structure, and high reliability.

[0018] The beneficial effects of this utility model are as follows: The liquid cooling plate assembly plays a role in heat exchange, temperature equalization, and current equalization for the battery module. By setting the load-bearing structure assembly, the liquid cooling plate assembly can bear the load, increase the structural strength, and protect the liquid cooling plate flow channel. At the same time, the whole assembly adopts an all-aluminum integrated brazing process, which achieves the effects of lightweight and compact structure, further reducing the weight of the entire liquid cooling plate. It is also free from defects such as structural separation failure and corrosion that are prone to occur in steel structures, thereby improving the safety of the entire energy storage battery. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a large-capacity battery cell liquid cooling plate for energy storage proposed in this utility model; Figure 2 This is an exploded perspective view of a liquid cooling plate for a large-capacity battery cell specifically for energy storage, as proposed in this utility model. Figure 3 This is a perspective view of the upper cover plate of a large-capacity liquid cooling plate for energy storage proposed in this utility model. Figure 4 This is a three-dimensional view of the flow channel plate of a large-capacity battery cell liquid cooling plate for energy storage proposed in this utility model; Figure 5 A three-dimensional view of the load-bearing fins of a large-capacity liquid cooling plate for energy storage proposed in this utility model; Figure 6 This is a perspective view of the base plate of a large-capacity liquid cooling plate for energy storage proposed in this utility model.

[0020] In the diagram: 1. Liquid cooling plate assembly; 11. Top cover plate; 12. Flow channel plate; 13. Crossbeam; 14. Liquid inlet; 15. Liquid outlet; 2. Load-bearing structure assembly; 21. Load-bearing fins; 22. Bottom support plate. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Reference Figure 1-6 A liquid cooling plate for high-capacity battery cells for energy storage, comprising a liquid cooling plate assembly 1.

[0023] The liquid cooling plate assembly 1 has a load-bearing structure assembly 2 with a flat lower surface fixedly installed on its lower surface. The load-bearing structure assembly 2 performs the functions of bearing the load of the liquid cooling plate assembly 1, increasing the structural strength, and protecting it.

[0024] Specifically, the liquid cooling plate assembly 1 consists of an upper cover plate 11 and a flow channel plate 12 arranged from top to bottom. To increase the strength of the top of the liquid cooling plate, a crossbeam 13 is also fixedly installed on the upper surface of the upper cover plate 11 in the width direction by rivet nuts and rivet screws. The crossbeam 13 can be installed at both ends or in the middle of the upper cover plate 11, which are located at the front and rear seats of the vehicle body, without affecting the overall height of the vehicle or the installation height of the seats.

[0025] To ensure the liquid cooling plate is securely fixed and to prevent loosening, the upper cover plate 11 and the flow channel plate 12 are fixedly connected by hexagonal rivet nuts at their four perimeters. The hexagonal rivet nuts at the four perimeters ensure sealing and prevent the liquid cooling plate from loosening due to vibration.

[0026] Furthermore, the upper cover plate 11 is provided with an inlet 14 and an outlet 15 on both sides of one end. After the heat exchange medium enters through the inlet 14, it flows through the flow channel on the upper surface of the flow channel plate 12 to complete the heat exchange action and then flows out through the outlet 15. This facilitates integrated control of heat exchange.

[0027] The liquid cooling plate assembly 1 can perform thermal performance functions such as heat exchange, temperature equalization, and current equalization for the battery module.

[0028] To provide lightweight load-bearing support for the liquid cooling plate assembly 1, the load-bearing structural assembly 2 consists of load-bearing fins 21 arranged from top to bottom and a base plate 22. The load-bearing fins 21 are fixed to the upper surface of the base plate 22, and then the flow channel plate 12 is fitted and pressed tightly onto it. Finally, the hexagonal nut studs extend from the periphery of the upper cover plate 11 to the lower surface of the base plate 22 and are riveted and locked. The load-bearing fins 21 are fixed to the base plate 22 for easy fixation. The flow channel plate 12 is then placed over the load-bearing fins 21 and finally riveted and locked.

[0029] To achieve heat exchange while increasing the overall strength of the liquid cooling plate, the surface of the load-bearing fins 21 is arranged in a cross-shaped pattern to form a corrugated shape. The corrugated load-bearing fins 21 have the advantages of load-bearing capacity, increased structural strength, protection of the liquid cooling plate, lightweight, compact structure, and high reliability. They also protect the flow channels of the liquid cooling plate.

[0030] The liquid-cooled plate assembly adopts an all-aluminum integrated brazing process, which has the advantages of lightweight, compact structure, and high reliability, and avoids the defects of structural separation failure or corrosion. Currently, this liquid-cooled plate is specifically used in liquid cooling solutions for heat dissipation and load-bearing of large-capacity battery cells such as 500AH+, 600AH+, 700AH+, and 1000AH+ in the current energy storage market.

[0031] By setting the load-bearing structure component 2, the liquid cooling plate component 1 can be loaded, the structural strength can be increased, and the flow channel plate 12 can be protected. At the same time, the whole adopts the all-aluminum integrated brazing process, which achieves the effects of lightweight and compact structure, and can reduce the weight of the entire liquid cooling plate. It is also not as prone to structural separation failure, corrosion and other defects as steel structures, thereby improving the safety of the entire energy storage battery from the side.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A liquid-cooled plate for large-capacity battery cells for energy storage, comprising a liquid-cooled plate assembly (1); Its features are: The lower surface of the liquid cooling plate assembly (1) is fixedly installed with a load-bearing structure assembly (2) whose lower surface is flat. The liquid cooling plate assembly (1) consists of an upper cover plate (11) and a flow channel plate (12) arranged from top to bottom. The upper cover plate (11) and the flow channel plate (12) are fixedly connected by rivet hexagonal nut posts arranged at the four perimeter. The upper surface of the cover plate (11) is also fixed with a crossbeam (13) in the width direction by rivet nut posts and rivet screws. The load-bearing structure component (2) consists of load-bearing fins (21) arranged from top to bottom and a base plate (22). The load-bearing fins (21) are fixed on the upper surface of the base plate (22) and then the flow channel plate (12) is sleeved and pressed. Finally, the hexagonal nut column extends from the four periphery of the upper cover plate (11) to the lower surface of the base plate (22) and is then riveted and locked. The load-bearing structural component (2) performs the functions of bearing the load, increasing the structural strength, and protecting the liquid cooling plate component (1).

2. The liquid cooling plate for large-capacity battery cells for energy storage according to claim 1, characterized in that: The upper cover plate (11) is provided with an inlet (14) and an outlet (15) on both sides of one end. After the heat exchange medium enters from the inlet (14), it flows through the flow channel on the upper surface of the flow channel plate (12) to complete the heat exchange action and then flows out from the outlet (15).

3. The liquid cooling plate for large-capacity battery cells for energy storage according to claim 1, characterized in that: The load-bearing fins (21) are arranged in a cross shape to form a corrugated shape.

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