Quickly assembled and disassembled three-sided liquid-cooled battery module

Abstract

The utility model discloses a quick assembly and disassembly type three-surface liquid-cooled battery module which comprises a box body, a battery core assembly and sealing and pouring glue, the box body is of a top opening type structure, and steps are arranged at the bottoms of the inner walls of the two sides of the bottom. The battery cell assembly comprises a plurality of battery cells which are arranged in sequence, a gap is formed between every two adjacent battery cells, a rubber blocking strip for blocking the gap is arranged at the bottom between every two adjacent battery cells, the battery cell assembly is placed in the box body from the top opening of the box body, the bottom of the battery cell assembly is placed on the step, and a cavity is formed in the bottom of the box body; the box body is also provided with an air tap which is communicated with the cavity and the outside; and the sealing and filling glue is filled between the adjacent battery cells. According to the quick assembly and disassembly type three-surface liquid-cooled battery module, the battery cells and the box body can be conveniently and quickly assembled and disassembled in a negative pressure fixing manner, and damage is not caused during disassembly, so that the recycling rate is increased.

Description

Technical Field

[0001] This utility model relates to the field of power battery structure technology, specifically to a quick-installation and removal three-sided liquid-cooled battery module. Background Technology

[0002] With the rapid development of new energy vehicles, a large number of used battery packs have appeared on the market. Due to the environmental pollution caused by batteries, the need for recycling and reuse of retired battery packs is becoming increasingly urgent.

[0003] In existing technologies, power batteries mostly use structural adhesives or potting compounds to fix the cells to the casing. Therefore, the cells cannot be disassembled without damage, and the disassembly process is complex and requires specialized disassembly equipment. This is not only time-consuming and labor-intensive, but also easily leads to the scrapping of the cells or the need for rework and repair. In addition, the mainstream cooling solutions for battery packs are currently bottom liquid cooling or two-sided liquid cooling. Their heat dissipation path is singular and their heat exchange efficiency is limited, making it difficult to meet the cooling efficiency requirements of high-rate discharge scenarios and posing a risk of heat accumulation. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model proposes a quick-installation and disassembly three-sided liquid-cooled battery module, which facilitates the installation and disassembly of battery cells and housing.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a quick-installation and removal three-sided liquid-cooled battery module, including a housing, a cell assembly, and a sealing potting compound;

[0006] The box has an open top structure, and steps are provided at the bottom of the inner walls on both sides of the bottom.

[0007] The battery cell assembly includes multiple battery cells arranged in sequence, with gaps between adjacent battery cells, and a sealing strip is provided at the bottom of the adjacent battery cells to seal the gaps. The battery cell assembly is inserted into the housing through the top opening of the housing and placed on a step at the bottom, forming a cavity at the bottom of the housing. The housing is also provided with a connecting cavity and an external air nozzle.

[0008] The sealing adhesive is applied between adjacent battery cells and between the battery cell and the side wall of the housing.

[0009] The battery cell assembly is placed into the housing from the top. After the bottom of the battery cell assembly is placed on the step, the gap between adjacent battery cells is blocked by the sealant strip, and a cavity is formed between the step and the bottom of the housing. By injecting sealing glue between adjacent battery cells and between the battery cells and the side wall of the housing, a sealing effect can be achieved, and the bottom cavity forms a sealed cavity. By evacuating air through the air nozzle, the battery cell assembly can be fixed in the housing by negative pressure.

[0010] The advantages of the above-mentioned quick-installation and disassembly three-sided liquid-cooled battery module are: by fixing it with negative pressure, the battery cells and the casing can be installed and disassembled conveniently and quickly without causing damage during disassembly, thus improving the recycling rate.

[0011] Furthermore, the enclosure wall includes a bottom plate at the bottom, two end plates and two side plates arranged around the perimeter, the two end plates being located at the two battery cells at the beginning and end respectively, the two side plates being located on both sides of the plurality of battery cells respectively, and the steps being arranged on the side plates.

[0012] The structure of the box consists of a bottom plate and is surrounded by two opposite end plates and two opposite side plates.

[0013] Furthermore, the housing is also provided with a liquid cooling water channel, which is opened inside the bottom plate and the side plate, arranged in an S-shape and reciprocating, passing through one side plate, the bottom plate and the other side plate in sequence. The inlet and outlet of the liquid cooling water channel are respectively located on the two side plates.

[0014] After the coolant enters the liquid cooling channel through the inlet, it passes through the side plate, bottom plate, and side plate in sequence, thus forming a three-sided liquid cooling structure. This structure can simultaneously exchange heat with the bottom and two sides of the cell, reducing the cell temperature more quickly during high-rate discharge, ensuring cell safety, and reducing the risk of thermal runaway.

[0015] Furthermore, a thermally conductive pad is provided at the bottom of the battery cell assembly, and the thermally conductive pad is in contact with the base plate.

[0016] The bottom thermal pads allow for seamless heat transfer between the bottom of the battery cell assembly and the base plate.

[0017] Furthermore, a blocking strip is provided at the connection between the end plate and the side plate.

[0018] Sealing strips are used to improve the sealing performance during glue application. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of this utility model, the accompanying drawings used in the specific embodiments will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to scale.

[0020] Figure 1 This is a schematic diagram of a quick-installation and removal three-sided liquid-cooled battery module according to an embodiment of the present invention;

[0021] Figure 2 for Figure 1 The image shown is a cross-sectional view of a quick-release three-sided liquid-cooled battery module.

[0022] Figure 3 for Figure 1 An exploded view of a quick-release, three-sided liquid-cooled battery module is shown.

[0023] Figure 4 for Figure 1 The diagram shown is an exploded view of the casing of a quick-load, three-sided liquid-cooled battery module.

[0024] Figure label:

[0025] 10-Box body, 11-Bottom plate, 12-End plate, 13-Side plate, 131-Step, 14-Air nozzle, 15-Liquid cooling water channel, 151-Water inlet, 152-Water outlet, 16-Plug, 17-Cavity;

[0026] 20-Battery cell assembly, 21-Battery cell, 22-Insulating strip, 23-Thermal conductive pad;

[0027] 30 - Sealing and potting adhesive. Detailed Implementation

[0028] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0029] Please see Figures 1 to 4 This utility model provides a quick-installation and removal three-sided liquid-cooled battery module, including a housing 10, a cell assembly 20 and a sealing glue 30. The cell assembly 20 is installed inside the housing 10, and the housing 10 and the cell assembly 20 are fixed by negative pressure.

[0030] Specifically, the housing 10 has a top-opening structure, and the bottom of the inner walls on both sides is provided with steps 131. The battery cell assembly 20 includes multiple battery cells 21 arranged sequentially, with gaps between adjacent battery cells 21, and a sealing strip 22 is provided at the bottom between adjacent battery cells 21 to seal the gaps. The battery cell assembly 20 can be inserted into the housing 10 through the top opening, and the bottom rests on the steps 131, forming a cavity 17 at the bottom of the housing 10. The bottom of the housing 10 is also provided with a connecting cavity 17 and an external air nozzle 14. Encapsulating glue 30 is filled between adjacent battery cells 21 and between the battery cells 21 and the side walls of the housing 10.

[0031] After placing the battery cell assembly 20 into the housing 10, sealing glue 30 is injected between adjacent battery cells 21 and between the battery cell 21 and the housing 10. The sealing glue 30 mainly serves a sealing function rather than a fixing function, forming a sealed cavity in the bottom cavity 17. The air nozzle 14 is equipped with a two-way control valve; by drawing air through the air nozzle 14, negative pressure is applied to fix the battery cell assembly 20 inside the housing 10. This structure allows for convenient and quick installation and removal of the battery cell 21 from the housing 10. Removal only requires inflating the air nozzle 14, preventing damage and improving the recycling rate.

[0032] Specifically, the enclosure wall of the housing 10 includes a bottom plate 11, two end plates 12 and two side plates 13 surrounding the enclosure. The two end plates 12 are located at the two battery cells 21 at the beginning and end, respectively, and the two side plates 13 are located on both sides of the multiple battery cells 21. Steps 131 are provided at the junction of the bottom of the side plates 13 and the bottom plate 11. Furthermore, the connection between the end plates 12 and the side plates 13 is provided with sealing strips 16 to improve the sealing during glue application.

[0033] Specifically, the housing 10 is also provided with a liquid cooling water channel 15. The liquid cooling water channel 15 is opened inside the bottom plate 11 and the side plate 13, arranged in an S-shape and reciprocating, and passes through one side plate 13, the bottom plate 11 and the other side plate 13 in sequence. The inlet 151 and outlet 152 of the liquid cooling water channel 15 are respectively located on the top of the two side plates 13.

[0034] After the coolant enters the liquid cooling channel 15 through the inlet 151, it passes through the side plate 13, the bottom plate 11 and the side plate 13 in sequence, and exits through the outlet 152, thus forming a three-sided liquid cooling structure. This structure can simultaneously exchange heat with the bottom and two sides of the battery cell 21, and can reduce the temperature of the battery cell 21 more quickly during high-rate discharge, ensuring the safety of the battery cell 21 and reducing the risk of thermal runaway.

[0035] In this embodiment, a thermally conductive pad 23 is also provided at the bottom of the battery cell assembly 20. The thermally conductive pad 23 contacts the base plate 11, which allows the bottom of the battery cell assembly 20 to be without gaps with the base plate 11, thereby enabling efficient heat transfer.

[0036] The working principle of the aforementioned quick-installation and removal three-sided liquid-cooled battery module is as follows: The battery cell assembly 20 is placed inside the housing 10. Sealing glue 30 is injected between adjacent battery cells 21 and between the battery cells 21 and the housing 10, forming a sealed cavity in the bottom chamber 17. Air is drawn through the air nozzle 14, and the negative pressure is used to fix the battery cell assembly 20 inside the housing 10. During use, coolant enters the liquid cooling channel 15 through the inlet 151, flows through the side plate 13-bottom plate 11-side plate 13, and exits through the outlet 152, exchanging heat with the bottom and two sides of the battery cells 21 to form a three-sided liquid-cooled structure.

[0037] Using the aforementioned quick-installation, three-sided liquid-cooled battery module, the cell assembly is fixed in the casing using negative pressure, enabling convenient and rapid installation as well as free and damage-free disassembly. This not only improves production efficiency but also increases recycling rates. Furthermore, the three-sided liquid-cooling structure can reduce cell temperature more quickly during high-rate discharge, ensuring cell safety and reducing the risk of thermal runaway.

[0038] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model 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 or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A quick-mounting and dismounting three-side liquid-cooled battery module, characterized in that: This includes the enclosure, battery cell assembly, and potting compound; The box has an open top structure, and steps are provided at the bottom of the inner walls on both sides of the bottom. The battery cell assembly includes multiple battery cells arranged in sequence, with gaps between adjacent battery cells, and a sealing strip is provided at the bottom of the adjacent battery cells to seal the gaps. The battery cell assembly is inserted into the housing through the top opening of the housing and placed on a step at the bottom, forming a cavity at the bottom of the housing. The housing is also provided with a connecting cavity and an external air nozzle. The sealing adhesive is applied between adjacent battery cells and between the battery cell and the side wall of the housing.

2. The quick-mounting and dismounting three-side liquid-cooled battery module according to claim 1, characterized in that: The enclosure wall includes a bottom plate at the bottom, two end plates and two side plates arranged around the perimeter. The two end plates are located at the two battery cells at the beginning and end, respectively, and the two side plates are located on both sides of the multiple battery cells. The steps are arranged on the side plates.

3. The quick-mounting and dismounting three-side liquid-cooled battery module according to claim 2, characterized in that: The box is also equipped with a liquid cooling water channel, which is opened inside the bottom plate and the side plate. It is arranged in an S-shape and reciprocates, passing through one side plate, the bottom plate and the other side plate in sequence. The inlet and outlet of the liquid cooling water channel are respectively located on the two side plates.

4. The quick-mounting and dismounting three-side liquid-cooled battery module according to claim 3, characterized in that: The bottom of the battery cell assembly is also provided with a thermal pad, which is in contact with the base plate.

5. The quick-mounting and dismounting three-side liquid-cooled battery module according to claim 2, characterized in that: A blocking strip is provided at the connection between the end plate and the side plate.

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