Liquid cooling assembly, liquid cooling mechanism and battery module

Abstract

The utility model provides a liquid cooling component, a liquid cooling mechanism and a battery module. The liquid cooling component includes a liquid cooling plate tube, a water outlet component and a water inlet component. At least one liquid cooling plate tube is provided. The two ends of the liquid cooling plate tube are connected to the water outlet component and the water inlet component respectively. The liquid cooling plate tube is provided as a flat pipe. The liquid cooling component is made of plastic material. The liquid cooling mechanism also includes a first tap, a second tap, a water inlet joint and a water outlet joint. The liquid cooling component, the first tap and the second tap are provided with a plurality of them. Each first tap and the second tap connects each liquid cooling component to each other. The first tap is provided with a water outlet joint, and the second tap is provided with a water inlet joint. The utility model sets the shape and material of the liquid cooling plate tube. The plastic material is lighter than aluminum, has higher strength, does not require reinforcing rib support, and has a large contact area between the flat pipe and the battery cell. Therefore, the heat exchange efficiency can be improved while ensuring a simple structure.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a liquid cooling component, a liquid cooling mechanism and a battery module. Background Art

[0002] Nowadays, competition in the electric vehicle market is becoming increasingly fierce. As one of the most expensive components in electric vehicles, the market price of power batteries is also the focus of attention of various battery manufacturers. As users demand faster and faster charging speeds for battery packs, the requirements for battery thermal management are getting higher and higher.

[0003] Existing liquid cooling components are usually made of serpentine pipes and are usually made of aluminum materials. They have a small heat exchange area and low heat exchange efficiency. The aluminum material is soft and requires a supporting structure to be installed during installation, which makes the structure complex and the cost high. Utility Model Content

[0004] The technical problem to be solved by the utility model is how to make the liquid cooling component not only simple in structure but also high in heat exchange efficiency.

[0005] The utility model solves the above technical problems through the following technical means:

[0006] A liquid cooling component comprises a liquid cooling plate tube (111), a water outlet component (112), and a water inlet component (113); the liquid cooling plate tube (111) is provided with at least one, and the two ends of the liquid cooling plate tube (111) are respectively connected to the water outlet component (112) and the water inlet component (113); the liquid cooling plate tube (111) is provided as a flat pipe, and the liquid cooling component is made of plastic material.

[0007] Beneficial effects: Through the setting of the shape and material of the liquid cooling plate tube, the plastic material is lighter than aluminum, has higher strength, does not require reinforcing ribs for support, and the flat tube has a large contact area with the battery cell, so it can improve its heat exchange efficiency while ensuring a simple structure.

[0008] Furthermore, the liquid cooling component is made of one of PA66+GF30 material, PPS material, and PPA material.

[0009] Beneficial effects: Through the setting of the material, it is lighter than aluminum, has lower cost, higher strength, and does not require reinforcing ribs for support.

[0010] Furthermore, the liquid cooling plate tube (111) is a flat pipe extruded integrally from a plastic material.

[0011] Furthermore, a plurality of the liquid cooling plate tubes (111) are provided, and each of the liquid cooling plate tubes (111) is arranged flush along the Z axis; the water outlet assembly (112) and the water inlet assembly (113) are provided with mutually connected installation grooves matching the number of the liquid cooling plate tubes (111) on one side close to the liquid cooling plate tube (111), and the liquid cooling plate tube (111) is fixed in the installation groove.

[0012] The utility model also discloses a liquid cooling mechanism comprising the liquid cooling component described in any of the above technical solutions, and further comprising a first tap (12), a second tap (13), a water inlet joint (14), and a water outlet joint (15). The liquid cooling component, the first tap (12), and the second tap (13) are all provided in plurality, and each of the first tap (12) and the second tap (13) connects the liquid cooling components to each other. The first tap (12) is provided with a water outlet joint (15), and the second tap (13) is provided with a water inlet joint (14).

[0013] Beneficial effect: Through the cooperation of the liquid cooling assembly, the first tap, the second tap, the water inlet joint and the water outlet joint, the battery cell can be heat exchanged by using externally supplied heating or cooling liquid.

[0014] Furthermore, the first tap (12) located at the end is provided with a water outlet joint (15), and the second tap (13) located at the end is provided with a water inlet joint (14).

[0015] Furthermore, each of the first tap joints (12), the second tap joint (13) and each of the liquid cooling components is detachably connected, and the first tap joint (12), the second tap joint (13) and the water inlet joint (14), the water outlet joint (15) are detachably connected.

[0016] Beneficial effect: Through the setting of detachable connection, the battery module can be disassembled and installed according to the number of layers of specifications.

[0017] Furthermore, a first clamping tube (115) is fixedly connected to the water outlet assembly (112) near the adjacent liquid cooling assembly, and a second clamping tube (114) is fixedly connected to the water inlet assembly (113) near the adjacent liquid cooling assembly; the free ends of the first clamping tubes (115) are detachably connected to the first tap joints (12), and the free ends of the second clamping tubes (114) are detachably connected to the second tap joints (13); and a third clamping tube (121) is fixedly connected to the middle of the first tap joint (12) and the second tap joint (13), respectively, and each of the third clamping tubes (121) is detachably connected to the water outlet joint (15) and the water inlet joint (14), respectively.

[0018] Furthermore, each of the first clamping tubes (115) and the second clamping tubes (114) is provided with a circle of grooves, and the clamping springs on each of the first tap joints (12) and the second tap joints (13) are clamped together with the first clamping tubes (115) and the second clamping tubes (114) through the grooves; each of the third clamping tubes (121) is provided with a circle of grooves, and the clamping springs on the water outlet joint (15) and the water inlet joint (14) are clamped together with the third clamping tubes (121) through the grooves.

[0019] Beneficial effect: The reliability and sealing during use are ensured through the clamping of the groove and the clamping spring.

[0020] The utility model also discloses a liquid cooling mechanism comprising the liquid cooling assembly described in any one of the above technical solutions, and also comprising a plurality of battery cells (2), wherein each of the liquid cooling assemblies is spaced apart from each of the battery cells (2).

[0021] Beneficial effect: By setting the interval between the liquid cooling component and the battery cell, the contact area between the liquid cooling component and the battery cell can be increased, further improving the heat exchange efficiency.

[0022] The advantages of the utility model are:

[0023] The utility model sets the shape and material of the liquid cooling plate tube. The plastic material is lighter than aluminum, has higher strength, does not require reinforcing rib support, and has a large contact area between the flat tube and the battery cell. Therefore, the heat exchange efficiency can be improved while ensuring a simple structure.

[0024] The utility model is lighter than aluminum, has lower cost, higher strength and does not require reinforcing rib support through material setting.

[0025] The utility model can utilize externally supplied heating or cooling liquid to perform heat exchange on the battery core through the mutual cooperation of the liquid cooling component, the first tap, the second tap, the water inlet joint and the water outlet joint.

[0026] The utility model can be disassembled and installed according to the specification and number of layers of the battery module through the detachable connection arrangement.

[0027] The utility model ensures reliability and sealing during use through the clamping of the groove and the clamping spring.

[0028] The utility model can increase the contact area between the liquid cooling component and the battery core by setting the interval between the liquid cooling component and the battery core, thereby further improving the heat exchange efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a three-dimensional diagram of a battery module according to a first embodiment of the present utility model;

[0030] Figure 2This is a three-dimensional diagram of a liquid cooling assembly in a battery module according to a first embodiment of the present utility model;

[0031] Figure 3 This is a three-dimensional diagram of a first connecting member in a battery module according to a first embodiment of the present utility model;

[0032] Figure 4 This is a three-dimensional diagram of a liquid cooling plate tube in a battery module according to a first embodiment of the utility model;

[0033] Figure 5 This is an assembly diagram of the second tap and the water inlet connector in the battery module according to the first embodiment of the utility model. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model will be clearly and completely described below in combination with the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] Embodiment 1

[0036] like Figure 1 As shown, this embodiment provides a battery module, including a liquid cooling mechanism 1 and a plurality of battery cells 2.

[0037] like Figure 1 As shown, the liquid cooling mechanism 1 includes a liquid cooling component 11, a first tap 12, a second tap 13, a water inlet joint 14, and a water outlet joint 15. The liquid cooling component 11, the first tap 12, and the second tap 13 are all provided in plurality. The adjacent left sides of each liquid cooling component 11 are detachably connected with the first tap 12, and the adjacent right sides of each liquid cooling component 11 are detachably connected with the second tap 13. The first taps 12 and the second taps 13 interconnect the liquid cooling components 11. In this embodiment, the first tap 12 located at the end is detachably connected with the water outlet joint 15, and the second tap 13 located at the end is detachably connected with the water inlet joint 14, which can be disassembled and installed according to the specification and number of layers of the battery module. Each liquid cooling component 11 is arranged at intervals from each battery cell 2.

[0038] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5As shown, the liquid cooling assembly 11 includes a liquid cooling plate tube 111, a water outlet assembly 112, and a water inlet assembly 113. At least one liquid cooling plate tube 111 is provided. In this embodiment, two liquid cooling plate tubes 111 are provided flush along the height direction of the battery core 2. The left and right ends of the liquid cooling plate tube 111 are respectively connected and fixed with the water outlet assembly 112 and the water inlet assembly 113. The water outlet assembly 112 and the water inlet assembly 113 are both provided with mutually connected mounting grooves matching the number of the liquid cooling plate tubes 111 on one side of the liquid cooling plate tube 111. The liquid cooling plate tube 111 is fixed in the mounting groove. In this embodiment, The example liquid cooling plate tube 111 is welded and fixed to the water outlet assembly 112 and the water inlet assembly 113. The water outlet assembly 112 and the water inlet assembly 113 connect the liquid cooling plate tubes 111 to each other. A first clamping tube 115 is connected and fixed to each water inlet assembly 113 near the adjacent liquid cooling assembly 11. A second clamping tube 114 is connected and fixed to each water outlet assembly 112 near the adjacent liquid cooling assembly 11. The free end of each first clamping tube 115 is detachably connected to each second tap 13, and the free end of each second clamping tube 114 is detachably connected to each first tap 12.

[0039] like Figure 1 , Figure 3 , Figure 5 As shown, specifically, each of the first clamping tube 115 and the second clamping tube 114 is provided with a circle of grooves, and the clamping springs on each of the first tap joints 12 and the second tap joints 13 are clamped together with each of the first clamping tube 115 and the second clamping tube 114 through the grooves. The smooth cylindrical surfaces on the clamping surfaces of each of the first clamping tube 115 and the second clamping tube 114 are sealing surfaces, which can be sealed along the radial direction, thereby ensuring reliability and sealing during use; the middle parts of the first tap joints 12 and the second tap joints 13 at the ends are connected and fixed with the third clamping tube 121, and the third clamping tube 121 is provided with a circle of grooves, and the clamping springs on the water outlet joint 15 and the water inlet joint 14 are clamped together with the third clamping tube 121 through the grooves.

[0040] like Figure 1 , Figure 2 As shown, the liquid cooling component 11 is made of a plastic material with high thermal conductivity and high strength, specifically one of PA66+GF30 material, PPS material, and PPA material. The liquid cooling component 11 in this embodiment is made of PA66+GF30 material. Through the setting of the material, it is lighter than aluminum, has low cost, high strength, and does not require reinforcing ribs for support; the liquid cooling plate tube 111 is an integrally extruded flat pipe with high heat exchange efficiency. The wall thickness of the flat pipe is 0.8mm-1.5mm, the overall thickness of the cross section of the flat pipe is 4mm-6mm, the cross-sectional width of the flat pipe is 25mm-35mm, and the length of the flat pipe is set according to the arrangement of the battery cell 2; the connector needs to be matched according to the cross section of the flat pipe so that the flat pipe just penetrates into the connector and is fixed by laser welding.

[0041] During use, when the battery module is in a charging state, the battery core 2 is heated by passing hot liquid into the flat pipe. When the temperature of the battery core 2 is too high, the battery core 2 is cooled by passing cooling liquid into the flat pipe. The flat pipe is bonded to the battery core 2 by using a heat-conducting structural adhesive, so that the flat pipe and the battery core 2 can fit tightly. There are water outlet components 112 and water inlet components 113 at both ends of the flat pipe. The water outlet components 112 and the water inlet components 113 are respectively connected with the first tap 12 and the second tap 13 by quick plugging. The first tap 12 and the second tap 13 are respectively connected with the water outlet connector 15 and the water inlet connector 14 by quick plugging. One end is used for water inlet and the other end is used for water outlet. The battery core 2 is heat exchanged by using the heated or cooled liquid supplied from the outside of the battery module.

[0042] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A liquid cooling component, characterized in that: It comprises a liquid cooling plate tube (111), a water outlet component (112), and a water inlet component (113); At least one liquid cooling plate tube (111) is provided, and two ends of the liquid cooling plate tube (111) are respectively connected with a water outlet component (112) and a water inlet component (113). The liquid cooling plate tube (111) is provided as a flat pipe, and the liquid cooling component is made of plastic material.

2. A liquid cooling assembly according to claim 1, characterized in that: The liquid cooling component is made of one of PA66+GF30 material, PPS material and PPA material.

3. A liquid cooling assembly according to claim 1, characterized in that: The liquid cooling plate tube (111) is a flat pipe extruded in one piece from a plastic material.

4. A liquid cooling assembly according to claim 3, characterized in that: A plurality of the liquid cooling plate tubes (111) are provided, and the liquid cooling plate tubes (111) are arranged flush along the Z axis; the water outlet assembly (112) and the water inlet assembly (113) are provided with mutually connected installation grooves matching the number of the liquid cooling plate tubes (111) on one side close to the liquid cooling plate tubes (111), and the liquid cooling plate tubes (111) are fixed in the installation grooves.

5. A liquid cooling mechanism, characterized in that: The liquid cooling component comprises any one of claims 1 to 4, and further comprises a first tap (12), a second tap (13), a water inlet joint (14), and a water outlet joint (15), wherein the liquid cooling component, the first tap (12), and the second tap (13) are provided in plurality, and each of the first tap (12) and the second tap (13) interconnects each of the liquid cooling components, a water outlet joint (15) is provided on the first tap (12), and a water inlet joint (14) is provided on the second tap (13).

6. A liquid cooling mechanism according to claim 5, characterized in that: The first tap (12) located at the end is provided with a water outlet joint (15), and the second tap (13) located at the end is provided with a water inlet joint (14).

7. A liquid cooling mechanism according to claim 5, characterized in that: Each of the first tap joints (12) and the second tap joint (13) is detachably connected to each of the liquid cooling components, and the first tap joint (12) and the second tap joint (13) are detachably connected to the water inlet joint (14) and the water outlet joint (15).

8. A liquid cooling mechanism according to claim 7, characterized in that: A first clamping tube (115) is fixedly connected to the water outlet assembly (112) near the adjacent liquid cooling assembly, and a second clamping tube (114) is fixedly connected to the water inlet assembly (113) near the adjacent liquid cooling assembly. The free ends of the first clamping tubes (115) are detachably connected to the first tap joints (12), and the free ends of the second clamping tubes (114) are detachably connected to the second tap joints (13). A third clamping tube (121) is fixedly connected to the middle of the first tap joint (12) and the second tap joint (13), respectively, and each of the third clamping tubes (121) is detachably connected to the water outlet joint (15) and the water inlet joint (14).

9. A liquid cooling mechanism according to claim 8, characterized in that: Each of the first clamping tubes (115) and the second clamping tubes (114) is provided with a circle of grooves, and the clamping springs on each of the first tap joints (12) and the second tap joints (13) are clamped together with the first clamping tubes (115) and the second clamping tubes (114) through the grooves; each of the third clamping tubes (121) is provided with a circle of grooves, and the clamping springs on the water outlet joints (15) and the water inlet joints (14) are clamped together with the third clamping tubes (121) through the grooves.

10. A battery module, characterized in that: It comprises the liquid cooling mechanism as claimed in claim 5, and also comprises a plurality of battery cells (2), wherein each of the liquid cooling components is spaced apart from each of the battery cells (2).

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