Novel liquid cooling side plate battery

Abstract

The utility model belongs to the field of batteries, and particularly relates to a novel liquid-cooled side plate battery which comprises a battery box, a battery cell module and liquid-cooled side plates, the battery cell module and the liquid-cooled side plates are arranged in the battery box, the liquid-cooled side plates are provided with bosses, and the liquid-cooled side plates are arranged on two opposite sides of the battery cell module. The bosses of the liquid cooling side plates are all arranged between adjacent battery cells of the battery cell module and located between two adjacent battery cells, the bosses are connected with aerogel, the two opposite ends of the aerogel are both connected to the bosses, and the thickness of the bosses is larger than that of the aerogel. According to the utility model, the use of aerogel is reduced, and the cost is reduced; and an enough expansion space is provided for the battery cell.

Description

Technical Field

[0001] This utility model belongs to the field of batteries, specifically relating to a novel liquid-cooled side plate battery. Background Technology

[0002] To maintain consistent battery temperatures, existing technologies employ methods such as natural cooling, forced air cooling, and liquid cooling to achieve reasonable control over cell temperatures, thus effectively managing the temperature of cells within the vehicle's battery system.

[0003] A battery mainly consists of a cell module, which is composed of multiple connected cells. To prevent heat transfer between cells and avoid thermal runaway, aerogel is connected between adjacent cells. However, if the aerogel is too thin, the cells will expand as their temperature rises. A thin aerogel cannot provide enough space for the cells to expand. Therefore, the thickness of the aerogel in this structure must be at least greater than the original thickness required to meet the heat insulation requirements, which greatly increases the cost.

[0004] In view of the above, this utility model is hereby proposed. Utility Model Content

[0005] In order to solve the technical problems existing in the prior art, this utility model provides a novel liquid-cooled side plate battery. This utility model not only reduces the use of aerogel and lowers the cost, but also provides sufficient expansion space for the battery cell.

[0006] This utility model includes the following technical solution:

[0007] This utility model provides a novel liquid-cooled side-plate battery, including a battery box and a cell module disposed within the battery box, and also includes a liquid-cooled side plate. The liquid-cooled side plate is provided with bosses. The liquid-cooled side plate is disposed on opposite sides of the cell module. The bosses of the liquid-cooled side plate are all disposed between adjacent cells of the cell module, located between two adjacent cells. The bosses are connected to aerogel, and the opposite ends of the aerogel are connected to the bosses. The thickness of the bosses is greater than the thickness of the aerogel.

[0008] Furthermore, the boss is provided with a first liquid cooling channel.

[0009] Furthermore, the thickness of the boss is 3.5-6mm.

[0010] Furthermore, the thickness of the aerogel is 1-3 mm.

[0011] Furthermore, the width of the boss is equal to 10% of the cell width.

[0012] Furthermore, the liquid-cooled side plate includes a liquid-cooled plate and the boss. The liquid-cooled plate is provided with an inlet channel, an outlet channel and a second liquid-cooled channel. The second liquid-cooled channel has a harmonica tube structure. The inlets of the second liquid-cooled channel are all connected to the inlet channel, and the outlets of the second liquid-cooled channel are all connected to the outlet channel.

[0013] Furthermore, the inlet and outlet of the first liquid cooling channel are both connected to the second liquid cooling channel.

[0014] Furthermore, the inlet pipes of at least two liquid-cooled side plates are connected in parallel; the outlet pipes of at least two liquid-cooled side plates are connected in parallel.

[0015] Furthermore, the outer surface of the liquid-cooled side plate is coated with a flame-retardant insulating material.

[0016] Furthermore, the battery box includes a battery box and a box cover, and the battery box and the box cover are detachably connected.

[0017] By adopting the above technical solution, this utility model has the following advantages:

[0018] 1. This utility model not only reduces the use of aerogel and lowers costs, but also provides sufficient expansion space for the battery cell.

[0019] 2. This utility model effectively utilizes the cooling function of the liquid-cooled side plate to ensure temperature uniformity between battery cells.

[0020] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained through the structures pointed out in the description and the accompanying drawings. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of the battery cell module and the liquid-cooled side plate in an embodiment of this utility model;

[0023] Figure 2 This is an exploded view of the battery cell module and liquid-cooled side plate in an embodiment of this utility model;

[0024] Figure 3 This is a schematic diagram of the liquid-cooled side plate structure in an embodiment of this utility model;

[0025] Figure 4 This is a front view of the liquid-cooled side plate in an embodiment of this utility model;

[0026] In the diagram: 10-liquid cooling side plate, 101-boss, 102-liquid cooling plate, 103-liquid inlet, 104-liquid outlet, 20-cell module, 21-cell, 30-aerogel. Detailed Implementation

[0027] The following description provides many different embodiments or examples for implementing various features of the present invention. The elements and arrangements described in the specific examples below are only for concise expression of the present invention and are merely examples, not intended to limit the present invention.

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0029] This embodiment provides a novel liquid-cooled side-plate battery, including a battery case and a cell module 20 disposed within the battery case, such as... Figure 1 As shown, it also includes a liquid-cooled side plate 10, which is provided with a boss 101. The liquid-cooled side plate 10 is provided on opposite sides of the cell module 20. The bosses 101 of the liquid-cooled side plate 10 are all located between adjacent cells 21 of the cell module 20. The bosses 101 are designed to prevent the side of the cell 21 from expanding and squeezing the surrounding cells after the cell 21 overheats and runs away from thermal control. The surrounding cells are at risk of thermal runaway. Figure 2 As shown, between two adjacent battery cells 21, the boss 101 is connected to an aerogel 30, with both ends of the aerogel 30 connected to the boss 101. The thickness of the boss 101 is greater than the thickness of the aerogel 30. This difference in thickness introduces air thermal resistance, reducing the amount of aerogel 30 and lowering costs. Furthermore, it provides breathing space for the battery cell 21 to expand and contract. It should be noted that the thickness of the aerogel 30 should be understood as... Figure 2 The length in the X direction is shown.

[0030] The liquid-cooled side plate 10 of this invention improves the lateral heat dissipation of the battery cell module 20, alleviating the problem of large temperature difference between the top and bottom of the battery cell module 20. At the same time, the flow channel design of the boss 101 provided on the liquid-cooled side plate 10 enhances the heat dissipation between the connected battery cells 21 and increases the cooling area of ​​the battery cells 21. In addition, due to the design of the boss 101 structure, the aerogel 30 can be fixedly connected through the boss 101. The aerogel 30 does not need to be fixed by connecting to the battery cell 21. While ensuring that expansion space is provided, the thickness of the aerogel 30 can be reduced, saving the aerogel 30 and reducing costs.

[0031] In some embodiments, the boss 101 is provided with a first liquid cooling channel. By providing the first liquid cooling channel, coolant can pass through each boss 101, thereby improving the heat dissipation effect of the battery cell 21.

[0032] In some embodiments, the thickness of the boss 101 is 6 mm.

[0033] In some embodiments, the thickness of the aerogel 30 is 2 mm.

[0034] In some embodiments, the width of the boss 101 is equal to 10% of the width of the battery cell 21. This design ensures sufficient expansion space while keeping the volume of the battery cell module 20 relatively small. The width should be understood as... Figure 2 The length in the Y direction is shown.

[0035] In some embodiments, such as Figure 3 , Figure 4 As shown, the liquid-cooled side plate 10 includes a liquid-cooled plate 102 and a boss 101. The liquid-cooled plate 102 is provided with an inlet channel, an outlet channel and a second liquid-cooled channel. The second liquid-cooled channel has a harmonica tube structure. The inlets of the second liquid-cooled channel are all connected to the inlet channel, and the outlets of the second liquid-cooled channel are all connected to the outlet channel.

[0036] In some embodiments, the inlet and outlet of the first liquid cooling channel are both connected to the second liquid cooling channel.

[0037] To simplify the liquid cooling flow path, such as Figure 3 As shown, the second liquid cooling channel in the liquid cooling plate 102 is connected through the first liquid cooling channel in the boss, that is, the first liquid cooling channel between adjacent bosses is connected through the second liquid cooling channel. Figure 3 If the inlet channel is located on the left, the coolant enters through the inlet channel, then enters the second liquid cooling channel in the liquid cooling plate, then enters the first liquid cooling channel in the first boss, then enters the second liquid cooling channel, until it is discharged through the outlet channel on the right.

[0038] Because a battery contains one or more cell modules 20, and each cell module 20 has at least two liquid-cooled side plates 10, and coolant needs to be introduced into the liquid-cooled side plates 10 during operation, in some embodiments, the inlet pipes of at least two liquid-cooled side plates 10 are connected in parallel; and the outlet pipes of at least two liquid-cooled side plates 10 are connected in parallel. This ensures the uniformity of coolant flow into different liquid-cooled side plates 10 and improves the uniformity of heat dissipation of the cell 21.

[0039] The coolant can be a liquid that can effectively dissipate heat, such as ethylene glycol. The connection methods of the first cooling channel, the second cooling channel, the outlet channel and the inlet channel in the liquid-cooled side plate 10 include, but are not limited to, welding and integral molding.

[0040] like Figure 3 As shown, the liquid cooling plate 102 is provided with an inlet 103 and an outlet 104. One end of the inlet pipe is connected to an external coolant tank and pump, and the other end is connected to the inlet 103. The coolant enters the inlet channel through the inlet 103. One end of the outlet pipe is connected to an external coolant tank and pump, and the other end is connected to the outlet 104. The coolant in the outlet channel flows out through the outlet 104.

[0041] In some embodiments, the outer surface of the liquid-cooled side plate 10 is coated with a flame-retardant insulating material to prevent insulation and flame-retardant failure.

[0042] In some embodiments, the battery box includes a battery compartment and a cover, wherein the battery compartment and the cover are detachably connected for easy disassembly and replacement.

[0043] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0044] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A novel liquid-cooled side-plate battery, comprising a battery case and a cell module (20) disposed within the battery case, characterized in that, It also includes a liquid-cooled side plate (10), which is provided with a boss (101). The liquid-cooled side plate (10) is provided on opposite sides of the cell module (20). The boss (101) of the liquid-cooled side plate (10) is provided between adjacent cells (21) of the cell module (20) and located between two adjacent cells (21). The boss (101) is connected to an aerogel (30), and the opposite ends of the aerogel (30) are connected to the boss (101). The thickness of the boss (101) is greater than the thickness of the aerogel (30).

2. The novel liquid-cooled side-plate battery according to claim 1, characterized in that, The boss (101) is provided with a first liquid cooling channel.

3. A novel liquid-cooled side-plate battery according to claim 1 or 2, characterized in that, The thickness of the boss (101) is 3.5-6mm.

4. A novel liquid-cooled side-plate battery according to claim 3, characterized in that, The thickness of the aerogel (30) is 1-3 mm.

5. A novel liquid-cooled side-plate battery according to claim 1, characterized in that, The width of the boss (101) is equal to the width of the cell (21) x 10%.

6. A novel liquid-cooled side-plate battery according to claim 2, characterized in that, The liquid-cooled side plate (10) includes a liquid-cooled plate (102) and the boss (101). The liquid-cooled plate (102) is provided with an inlet channel, an outlet channel and a second liquid-cooled channel. The second liquid-cooled channel has a harmonica tube structure. The inlets of the second liquid-cooled channel are all connected to the inlet channel, and the outlets of the second liquid-cooled channel are all connected to the outlet channel.

7. A novel liquid-cooled side-plate battery according to claim 6, characterized in that, The inlet and outlet of the first liquid cooling channel are both connected to the second liquid cooling channel.

8. A novel liquid-cooled side-plate battery according to claim 7, characterized in that, The inlet pipes of at least two liquid-cooled side plates (10) are connected in parallel; the outlet pipes of at least two liquid-cooled side plates (10) are connected in parallel.

9. A novel liquid-cooled side-plate battery according to claim 1, characterized in that, The outer surface of the liquid-cooled side plate (10) is coated with flame-retardant insulating material.

10. A novel liquid-cooled side-plate battery according to claim 1, characterized in that, The battery box includes a battery box and a box cover, and the battery box and the box cover are detachably connected.

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