Liquid cooling assembly and battery

Abstract

The utility model provides a liquid cooling component and battery, belongs to battery technical field, liquid cooling component includes liquid cooling plate, said liquid cooling plate is provided with a plurality of recess that is used for placing the piece on the surface that faces the battery cell group, the side wall and bottom wall of recess are all suitable for the piece contact, the piece is used for connecting the battery cell pole in the battery cell group, and the battery cell pole is used for connecting the battery cell pole in the battery cell group. The liquid cooling plate is internally provided with a cooling flow channel, and the cooling flow channel is internally provided with a cooling medium used for cooling the chips. The grooves are formed in the side walls of the liquid cooling plate, when the chip is cooled, the chip is placed in the grooves, the other side faces of the chip except the side face connected with the pole are all arranged in the grooves, the contact area of the chip and the liquid cooling plate is large, namely, the large heat dissipation area is achieved, and the good cooling effect on the chip is achieved; and during installation, the liquid cooling plate is directly arranged above the battery cell group in a covering manner, so that a relatively large space is not occupied, and the installation is convenient.

Description

Technical Field

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

[0002] In the battery system, BUSBAR refers to the electrical connector between module cells, which is used to connect the cell poles, conduct the cells and transmit electrical energy.

[0003] During the operation of the battery, the bar will have a large overcurrent and serious heat generation problem. Currently, a liquid cooling plate is generally set on the battery cell, and part of the structure of the bar is overlapped on the liquid cooling plate for heat dissipation. Since the contact area between the bar and the liquid cooling plate is small, the heat dissipation effect is affected. Utility Model Content

[0004] Therefore, the technical problem to be solved by the utility model is to overcome the defect in the prior art that the heat is dissipated from the bar by a liquid cooling plate, the contact area between the bar and the liquid cooling plate is small, and the heat dissipation effect is affected, thereby providing a liquid cooling component and a battery.

[0005] In order to solve the above technical problems, the utility model provides a liquid cooling component, including:

[0006] A liquid cooling plate, wherein a plurality of grooves for placing tabs are arranged on the surface of the liquid cooling plate facing the battery cell group, wherein the tabs are used to connect the battery cell poles in the battery cell group, wherein the side walls and bottom walls of the grooves are suitable for contacting with the tabs, and wherein a cooling channel is arranged inside the liquid cooling plate, wherein the cooling channel contains a cooling medium for cooling the tabs.

[0007] Optionally, the liquid cooling plate comprises:

[0008] A first side plate, on which the cooling channel is arranged, and the cooling channel has a liquid inlet and a liquid outlet;

[0009] The second side plate is arranged opposite to the first side plate, and the second side plate has a first surface and a second surface arranged opposite to each other, the first surface is provided with the groove, and the second surface is sealed and connected to the first side plate.

[0010] Optionally, the second side plate and the groove are formed by an injection molding process.

[0011] Optionally, the first side plate and the second side plate are connected by welding.

[0012] Optionally, the cooling channel protrudes from the surface of the first side plate in a direction away from the second side plate.

[0013] Optionally, the cooling medium is an insulating material.

[0014] Optionally, the size of the groove matches the size of the tab.

[0015] Optionally, the liquid cooling plate is made of insulating material.

[0016] The utility model also provides a battery, comprising:

[0017] Battery cell group;

[0018] A plurality of tabs connected to the cell poles of the cell group;

[0019] The liquid cooling assembly described in any of the above items is arranged above the battery cell group, and the bar is arranged in a groove of the liquid cooling assembly.

[0020] Optionally, the tabs are connected to the cell poles of the cell group by welding.

[0021] The technical solution of the utility model has the following advantages:

[0022] The liquid cooling assembly provided by the utility model comprises a liquid cooling plate, wherein a plurality of grooves for placing tabs are arranged on the surface of the liquid cooling plate facing the battery cell group, the tabs are used to connect the battery cell poles in the battery cell group, the side walls and bottom walls of the grooves are suitable for contacting with the tabs, a cooling channel is arranged inside the liquid cooling plate, and a cooling medium for cooling the tabs is contained in the cooling channel.

[0023] By setting a groove on the side wall of the liquid cooling plate, the bar is placed in the groove when cooling the bar. Except for the side connected to the pole, the other sides of the bar are set in the groove. The contact area is large, that is, it has a large heat dissipation area, thereby achieving a better cooling effect on the bar. During installation, the liquid cooling plate cover is directly placed above the battery cell group, which will not take up a large space and is easy to install. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 This is a schematic diagram of an exploded structure of an implementation of a liquid cooling assembly provided in Example 1 of the utility model;

[0026] Figure 2 for Figure 1 Schematic diagram of the explosion structure in another direction;

[0027] Figure 3This is a schematic structural diagram of an implementation of a battery provided in Example 2 of the utility model;

[0028] Figure 4 for Figure 3 Schematic diagram of the structure of the CMB and liquid cooling plate;

[0029] Figure 5 for Figure 3 Schematic diagram of the explosion structure.

[0030] Description of reference numerals:

[0031] 1. Liquid cooling plate; 2. Bar plate; 3. Groove; 4. Cooling channel; 5. First side plate; 6. Second side plate; 7. First surface; 8. Second surface; 9. Battery cell group. DETAILED DESCRIPTION

[0032] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. 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.

[0033] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0036] Example 1

[0037] The liquid cooling assembly provided in this embodiment is used to cool the bar inside the battery to prevent the bar from heating up and seriously affecting the battery quality.

[0038] like Figure 1 and Figure 2 As shown, a specific implementation of the liquid cooling component provided in this embodiment includes a liquid cooling plate 1, and a plurality of grooves 3 for placing the tabs 2 are arranged on the surface of the liquid cooling plate 1 facing the battery cell group 9. The tabs 2 are used to connect the battery cell poles in the battery cell group 9, and the side walls and bottom walls of the grooves 3 are suitable for contacting with the tabs 2. A cooling channel 4 is arranged inside the liquid cooling plate 1, and the cooling channel 4 has a cooling medium for cooling the tabs 2.

[0039] By setting a groove 3 on the surface of the liquid cooling plate 1, the bar 2 is placed in the groove 3 when cooling the bar 2. Except for the side connected to the pole, the other sides of the bar 2 are all set in the groove 3. The contact area is large, that is, it has a large heat dissipation area, and a better cooling effect for the bar 2 is achieved; and when installing, the liquid cooling plate 1 is directly covered on the top of the battery cell group 9, which will not take up a large space and is easy to install. The liquid cooling plate 1 does not need to be fixed by gluing or the like. The liquid cooling plate 1 is fixed by clamping the bar 2 and other components inside the battery, such as the upper cover, so that it is easy to disassemble.

[0040] Specifically, the groove 3 is a non-through groove, and has a bottom wall; the specific shape of the cooling channel 4 is not limited, and it can be a spiral structure, an S-shaped structure or a linear structure, etc.; the cooling medium is generally a coolant.

[0041] Specifically, the size of the liquid cooling plate 1 is greater than or equal to the plane size of the battery cell group 9 , and can not only cool the bar 2 but also cool the upper part of the battery cell group 9 .

[0042] like Figure 1 and Figure 2 As shown, the liquid cooling assembly provided in this embodiment, the liquid cooling plate 1 includes a first side plate 5 and a second side plate 6, the first side plate 5 is provided with the cooling channel 4, the cooling channel 4 has a liquid inlet and a liquid outlet; the second side plate 6 is arranged opposite to the first side plate 5, the second side plate 6 has a first surface 7 and a second surface 8 arranged opposite to each other, the first surface 7 is provided with the groove 3, and the second surface 8 is sealed and connected to the first side plate 5. That is, the cooling medium can be accommodated between the first side plate 5 and the second side plate 6, so that the cooling medium can only enter and exit from the liquid inlet and the liquid outlet.

[0043] The liquid cooling plate 1 is a split arrangement of a first side plate 5 and a second side plate 6, which facilitates the production of the groove 3 and the cooling channel 4. In addition, as an alternative embodiment, the first side plate 5 and the second side plate 6 are an integrally formed structure.

[0044] Specifically, the first side plate 5 and the second side plate 6 are of the same size and are butt-jointed to form an integral structure; the liquid inlet and the liquid outlet of the cooling channel 4 are both arranged on the first side plate 5, and the specific positions of the liquid inlet and the liquid outlet are not limited.

[0045] In the liquid cooling assembly provided in this embodiment, the second side plate 6 and the groove 3 are formed by an injection molding process. Specifically, after the production of the bar piece 2 is completed, the bar piece 2 is placed in an injection mold, and a plastic flat plate is made around and above the bar piece 2 by the injection molding process. After the flat plate and the bar piece mold are integrated by injection molding, the flat plate and the bar piece mold are separated to obtain a flat plate with a groove 3 that fits the shape of the bar piece, that is, the second side plate 6, which is produced by the injection molding process, has high production efficiency, and the groove 3 is accurately positioned, which is convenient for accurate docking with the bar piece 2 during installation.

[0046] Specifically, the first side panel 5 can also be manufactured by injection molding.

[0047] In the liquid cooling assembly provided in this embodiment, the first side plate 5 and the second side plate 6 are welded and connected firmly. Specifically, the welding method is laser welding. In addition, as an alternative implementation, the first side plate 5 and the second side plate 6 can also be connected by means of glue or the like.

[0048] like Figure 1 As shown, in the liquid cooling assembly provided in this embodiment, the cooling channel 4 protrudes from the surface of the first side plate 5 in the direction away from the second side plate 6, and the cooling channel 4 is protrudingly arranged to reduce the overall weight and thickness of the liquid cooling plate 1. The thickness of the liquid cooling plate 1 is the sum of the thickness of the first side plate 5 and the thickness of the second side plate 6. In addition to the protruding cooling channel 4, the rest of the outer side of the first side plate 5 can also be utilized, which can further compress the height of the overall battery.

[0049] In addition, as an alternative embodiment, the cooling channel 4 is arranged between the first side plate 5 and the second side plate 6, and there is a cavity between the two side plates. The cooling channel 4 is arranged in the cavity, that is, the outer side surface of the first side plate 5 is a plane. In this embodiment, the thickness of the liquid cooling plate 1 is the sum of the thickness of the first side plate 5, the second side plate 6 and the cavity therebetween.

[0050] The liquid cooling assembly provided in this embodiment, the cooling medium is an insulating material. The cooling medium of the insulating material can not only perform cooling, but also avoid the danger of the cooling medium and the liquid cooling plate 1 being electrically conductive or the cooling medium leaking into the battery to conduct electricity. It should be noted that the present application does not limit the specific material of the cooling medium, and any known material oil with strong insulating and thermal conductive properties in the prior art can be used, such as a synthetic liquid-based insulating coolant.

[0051] The liquid cooling assembly provided in this embodiment, the liquid cooling plate 1 is made of insulating material, specifically, plastic material, which can not only be insulated but also conduct heat. After using this material, there is no need to set an additional insulating sheet between the liquid cooling plate 1 and the battery cell group 9, thus saving space. Since the density of plastic is much lower than that of aluminum, the weight of the integrated battery system will be reduced, so that the battery system can achieve the purpose of weight reduction.

[0052] In the liquid cooling assembly provided in this embodiment, the size of the groove 3 is adapted to the size of the bar 2. That is, the length, width and thickness of the groove 3 are substantially consistent with those of the bar 2, so that the bar 2 is just accommodated in the groove 3, and the top wall and outer side wall of the bar 2 are in contact with the bottom wall and side wall of the groove 3. Specifically, the groove 3 is a rectangular groove, and its thickness is consistent with the thickness of the bar 2.

[0053] Example 2

[0054] like Figures 3 to 5 As shown, a specific implementation of the battery provided in this embodiment includes a battery cell group 9, a plurality of bars 2 and the liquid cooling assembly described in Example 1, wherein the liquid cooling assembly is arranged above the battery cell group 9, and the bars 2 are arranged in the groove 3 of the liquid cooling assembly.

[0055] In the battery provided in this embodiment, the bar sheet 2 and the cell poles of the cell group 9 are welded and connected.

[0056] Installation process: first weld the bar 2 to the pole of the battery cell group 9, then cover the liquid cooling plate 1 on the top of the battery cell group 9, and lock the bar 2 in the groove 3.

[0057] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the scope of protection of the present utility model.

Claims

1. A liquid cooling component, characterized in that: include: A liquid cooling plate (1), wherein a plurality of grooves (3) for placing tabs (2) are arranged on a surface of the liquid cooling plate (1) facing the battery cell group (9), wherein the tabs (2) are used to connect the battery cell poles in the battery cell group (9), and the side walls and bottom walls of the grooves (3) are suitable for contacting the tabs (2), and a cooling channel (4) is arranged inside the liquid cooling plate (1), wherein the cooling channel (4) contains a cooling medium for cooling the tabs (2).

2. The liquid cooling assembly according to claim 1, characterized in that: The liquid cooling plate (1) comprises: A first side plate (5) on which the cooling channel (4) is arranged, and the cooling channel (4) has a liquid inlet and a liquid outlet; The second side plate (6) is arranged opposite to the first side plate (5), the second side plate (6) having a first surface (7) and a second surface (8) arranged opposite to each other, the first surface (7) being provided with the groove (3), and the second surface (8) being sealedly connected to the first side plate (5).

3. The liquid cooling assembly according to claim 2, characterized in that: The second side plate (6) and the groove (3) are formed by an injection molding process.

4. The liquid cooling assembly according to claim 2, characterized in that: The first side plate (5) and the second side plate (6) are connected by welding.

5. The liquid cooling assembly according to claim 2, characterized in that: The cooling channel (4) protrudes from the surface of the first side plate (5) in a direction away from the second side plate (6).

6. The liquid cooling assembly according to claim 1, characterized in that: The cooling medium is made of insulating material.

7. The liquid cooling assembly according to claim 1, characterized in that: The size of the groove (3) is adapted to the size of the tab (2).

8. The liquid cooling assembly according to claim 1, characterized in that: The liquid cooling plate (1) is made of insulating material.

9. A battery, characterized in that: include: Battery cell group (9); A plurality of tabs (2) connected to the cell poles of the cell group (9); The liquid cooling component according to any one of claims 1 to 8, wherein the liquid cooling component is arranged above the battery cell group (9), and the bar (2) is arranged in a groove (3) of the liquid cooling component.

10. The battery according to claim 9, characterized in that The bar (2) and the cell poles of the cell group (9) are welded and connected.

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