Liquid cooling plate and battery pack

Abstract

The utility model relates to the technical field of batteries, and provides a liquid cooling plate and a battery pack, the liquid cooling plate comprises a liquid cooling plate body, the liquid cooling plate body comprises a first plate body and a second plate body, the peripheral sides of the first plate body and the second plate body are correspondingly connected, and a liquid cooling flow channel is enclosed between the first plate body and the second plate body; and the plurality of fixing pieces penetrate through the first plate body, one end of each fixing piece is located between the first plate body and the second plate body, the other end of each fixing piece penetrates through the first plate body and extends in the direction away from the first plate body, and the parts, located outside the first plate body, of the fixing pieces are used for being connected with electrical components of the battery. The liquid cooling plate and the battery pack provided by the utility model aim at solving the problems that in the prior art, the liquid cooling plate is single in function, and elements of the battery pack are relatively complicated to mount.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a liquid cooling plate and a battery pack. Background Technology

[0002] The new energy vehicle industry is developing rapidly and is showing a trend of gradually replacing gasoline vehicles. However, at present, the cost of new energy vehicles is generally higher than that of gasoline vehicles. Before the battery chemistry system is iterated and a technological breakthrough is achieved, in the context of increasingly fierce competition among domestic and foreign automakers, lightweight and cost-reduction design of battery packs is the basic development path for the entire industry.

[0003] Currently, many components in battery packs have a single function, each performing its own purpose, and cannot achieve the effect of one device being multifunctional. Utility Model Content

[0004] This invention provides a liquid cooling plate and a battery pack, aiming to solve the problems of limited functionality of liquid cooling plates and complex installation of battery pack components in traditional technologies.

[0005] To address the problems existing in the prior art, this utility model provides a liquid cooling plate for a battery, the liquid cooling plate comprising:

[0006] The liquid-cooled plate body includes a first plate and a second plate, the first plate and the second plate being connected peripherally to each other, and a liquid-cooled flow channel being formed between the first plate and the second plate; and...

[0007] Several fasteners are disposed in the first plate. One end of each fastener is located between the first plate and the second plate, and the other end extends through the first plate in a direction away from the first plate. The part of the fastener outside the first plate is used to connect electrical components of the battery.

[0008] According to the present invention, a liquid cooling plate is provided on the first plate body, the fixing member includes a limiting plate and a stud, the stud is inserted through the mounting hole, the limiting plate is disposed at the end of the stud and abuts against the inner wall of the first plate body, and the stud is used to connect the electrical components.

[0009] According to the present invention, the inner wall of the first plate body protrudes in a direction away from the second plate body to form a convex bulge, and the convex bulge is provided corresponding to the mounting hole.

[0010] According to the present invention, the surface of the convex bulge is arranged parallel to the surface of the first plate body.

[0011] According to the present invention, the liquid cooling plate includes a threaded bushing, which is threadedly connected to the stud and conforms to the outer wall of the first plate.

[0012] According to the present invention, a liquid cooling plate is provided, wherein the fixing member further includes a nut, the nut being threadedly connected to the stud and located on the threaded bushing, and the threaded bushing and the nut being used to connect and lock the electrical components.

[0013] According to the present invention, a liquid cooling plate is provided in which the stud extends in a direction perpendicular to the surface of the first plate.

[0014] According to the present invention, when the fixing member locks the electrical components, there is a gap between the limiting plate and the inner wall of the second plate.

[0015] This utility model also provides a battery pack, including a liquid cooling plate and electrical components. The electrical components include a component frame and a component assembly disposed on the component frame. The liquid cooling plate is the liquid cooling plate as described in any of the above claims.

[0016] The component assembly is provided with a number of mating parts, and each mating part is provided in correspondence with each fixing part.

[0017] According to the present invention, a battery pack is provided, wherein the fixing member includes a limiting plate, a stud, a threaded bushing and a nut, and the mating member includes a plurality of connecting holes provided on the component frame, each of the connecting holes being used to pass through the corresponding stud.

[0018] The liquid cooling plate provided by this utility model not only has the effect of heat dissipation for the battery cell, but also, due to the presence of a fixing component that can connect electrical components, eliminates the need for the complex installation frame with numerous electrical components in traditional technology. This achieves the same function as the liquid cooling plate while being lightweight, simplifying the process and reducing costs. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in 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 from these drawings without creative effort.

[0020] Figure 1 This is a partial structural schematic diagram of the battery pack provided by this utility model;

[0021] Figure 2 yes Figure 1A partial sectional view of the structure;

[0022] Figure 3 This is a schematic diagram of the structure of the liquid cooling plate provided by this utility model.

[0023] Reference numerals: 1. Liquid cooling plate body; 11. First plate; 12. Second plate; 13. Mounting hole; 2. Fixing component; 21. Stud; 22. Limiting plate; 23. Protrusion; 24. Threaded bushing; 25. Nut; 3. Electrical component; 31. Component frame; 32. Component assembly; 33. Connecting hole. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions 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 scope of protection of this utility model.

[0025] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model based on the specific circumstances.

[0026] In the description of the embodiments of this utility model, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0027] Furthermore, 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0028] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0029] The following disclosure provides numerous different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention; however, those skilled in the art will recognize the applicability of other processes and / or the use of other materials.

[0030] The following is combined with Figures 1-3 This invention describes the liquid cooling plate and battery pack provided by this utility model.

[0031] In view of the problems of limited functionality of liquid cooling plates and complex installation of battery pack components in traditional technologies, this utility model provides a liquid cooling plate, including a liquid cooling plate body 1 and several fixing components 2, to address the problems existing in the prior art.

[0032] The liquid cooling plate body 1 includes a first plate 11 and a second plate 12, which are connected peripherally to each other, forming a liquid cooling channel between them. In actual use, coolant flows within the liquid cooling channel to cool the battery cell. A fixing member 2 is disposed within the first plate 11, with one end located between the first plate 11 and the second plate 12, and the other end extending through the first plate 11 away from it. It should be noted that the portion of the fixing member 2 outside the first plate 11 is used to connect the battery's electrical components 3. This design retains the cooling function of the liquid cooling plate while also serving as a structural mounting base for the electrical components 3, eliminating the need for numerous mounting frames on the electrical components 3. This achieves the same functionality as the liquid cooling plate while reducing weight, simplifying the manufacturing process, and lowering costs.

[0033] There are various implementations of the fastener 2. The fastener 2 can be welded to or detachably connected to the electrical component 3. A detachable connection is naturally more convenient for the installation and disassembly of the structure. When the fastener 2 is detachably connected to the electrical component 3, the connection between the fastener 2 and the electrical component 3 can be selected by plugging, snapping, threading, etc. Therefore, in optional embodiments, one end of the fastener 2 can be fixedly connected to or detachably connected to the first plate 11, and the other end can be plugged, snapped, or threaded to the electrical component 3. Plug-in connection can be a combination of a protrusion and a slot, snap-in connection can be a snap-fit ​​connection, and threaded connection can be a nut and a stud. This utility model does not limit the specific implementation of these methods.

[0034] In one implementation, please refer to Figures 1-3 The first plate 11 has a mounting hole 13, and the fastener 2 includes a limiting plate 22 and a stud 21. Specifically, the stud 21 passes through the mounting hole 13, and the limiting plate 22 is located at the end of the stud 21 and abuts against the inner wall of the first plate 11. The limiting plate 22 can be welded or riveted to the bottom end of the stud 21, and the diameter of the limiting plate 22 is larger than the diameter of the mounting hole 13 to prevent the stud 21 from falling out of the mounting hole 13. Furthermore, the stud 21 is used to connect electrical components 3. Nuts can be provided on the electrical components 3 to cooperate with the stud 21, so that the two can achieve efficient and convenient disassembly through threaded connection.

[0035] There are several ways to set the limiting plate 22. In one optional embodiment, the limiting plate 22 is set against the inner wall of the first plate 11. In other optional embodiments, the limiting plate 22 can also be set against the inner wall of the second plate 12, but this may put pressure on the second plate 12 and affect its strength. In another optional embodiment, the limiting plate 22 can also be sandwiched between the first plate 11 and the second plate 12, but this may also put pressure on both the first plate 11 and the second plate 12. Therefore, in the technical solution provided by this utility model, the inner wall of the first plate 11 protrudes in a direction away from the second plate 12 to form a protrusion 23, and the protrusion 23 is set corresponding to the mounting hole 13. By setting the protrusion 23, a gap can be formed between the first plate 11 and the second plate 12 to prevent the limiting plate 22 from putting pressure on the second plate 12. Furthermore, in the technical solution provided by this utility model, when the fixing member 2 locks the electrical component 3, there is a gap between the limiting plate 22 and the inner wall of the second plate 12.

[0036] It should be noted that a thickened area is formed at the convex 23. The wall of the first plate 11 located at the convex 23 can be thickened or not, and this utility model does not limit this.

[0037] Furthermore, the surface of the protrusion 23 is set parallel to the surface of the first plate 11, so that the surface of the protrusion 23 forms a stable mounting area, which facilitates the contact between the electrical components 3 and the first plate 11, or the mounting connection between other mounting parts and the protrusion 23, such as the contact between nuts and the first plate 11, making the mounting connection more stable.

[0038] In the technical solution provided by this utility model, the fixing member 2 further includes a threaded bushing 24, which is threadedly connected to the stud 21 and conforms to the outer wall of the first plate 11. Further, the fixing member 2 also includes a nut 25, which is threadedly connected to the stud 21 and located above the threaded bushing 24. It should be noted that both the threaded bushing 24 and the nut 25 can be made of steel. The steel threaded bushing 24 improves the anti-loosening capability of the stud 21. Each electrical component 3 is assembled to the threaded bushing 24 and then tightened with the nut 25. Both the upper and lower ends of the electrical component 3 connection pair are made of steel, with high yield strength, avoiding torque attenuation. Furthermore, the self-locking property of the nut 25 structure prevents bolt loosening.

[0039] Furthermore, the stud 21 extends in a direction perpendicular to the surface of the first plate 11 to ensure that the mounting direction of the electrical components 3 is perpendicular to the plane of the liquid cooling plate, which facilitates standardized assembly.

[0040] It should also be noted that the convex hull 23 should be positioned far away from the liquid cooling channel to avoid affecting the structural strength of the liquid cooling channel and to prevent coolant leakage.

[0041] Please see Figure 1 This utility model also provides a battery pack, including a liquid cooling plate and electrical components 3. The electrical components 3 include a component frame 31 and a component assembly 32 disposed on the component frame 31. The component assembly 32 is provided with a plurality of mating parts, each mating part corresponding to a fixing part 2. The fixing part 2 and the mating parts can be plugged in, snapped in, snapped together, or threaded together; this utility model does not limit this connection.

[0042] Furthermore, for ease of installation, when the fastener 2 is set as a stud 21, the mating part includes a connecting hole 33 on the component assembly 32. Each connecting hole 33 is used to pass through the corresponding stud 21, and the connecting hole 33 is set one-to-one with the mounting hole 13.

[0043] It should be noted that traditional component frames 31 have numerous mounting frames for fixing component assemblies 32 and other components, resulting in a complex structure and increased weight. This invention eliminates the need for mounting frames on the component frame 31 by incorporating fasteners 2 on the liquid cooling plate. These fasteners 2 connect and secure the component assembly 32, thereby reducing the need for mounting frames on the component frame 31, lowering costs and reducing the weight of the component frame 31. The number and position of the fasteners 2 can be determined based on the mounting positions of the components in the component assembly 32, and this invention does not impose any limitations on this.

[0044] This invention provides a liquid cooling plate and battery pack that achieves the same functionality with a simpler structure, lighter weight, simpler manufacturing process, and lower cost. It eliminates a large portion of the frame structure, allowing electrical components to be directly assembled onto the liquid cooling plate, which replaces the function of the mounting frame. Furthermore, to avoid torque attenuation and bolt loosening at mounting points due to the low strength of the aluminum alloy material in the liquid cooling plate, steel bushings are installed at the high-stress mounting points. Ultimately, the function of the lower housing assembly of the battery pack remains unaffected, simplifying the manufacturing process and reducing weight, thus achieving the goals of lightweighting and low cost.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not 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 of the technical features. Such 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 this utility model.

Claims

1. A liquid cooling plate for a battery pack, characterized in that, The liquid cooling plate includes: The liquid-cooled plate body includes a first plate and a second plate, the first plate and the second plate being connected peripherally to each other, and a liquid-cooled flow channel being formed between the first plate and the second plate; and... Several fasteners are disposed in the first plate. One end of each fastener is located between the first plate and the second plate, and the other end extends through the first plate in a direction away from the first plate. The part of the fastener outside the first plate is used to connect electrical components of the battery.

2. The liquid cooling plate according to claim 1, characterized in that, The first plate has a mounting hole. The fixing member includes a limiting plate and a stud. The stud passes through the mounting hole. The limiting plate is located at the end of the stud and abuts against the inner wall of the first plate. The stud is used to connect the electrical components.

3. The liquid cooling plate according to claim 2, characterized in that, The inner wall of the first plate protrudes in a direction away from the second plate to form a bulge, and the bulge is provided corresponding to the mounting hole.

4. The liquid cooling plate according to claim 3, characterized in that, The surface of the convex bulge is arranged parallel to the surface of the first plate.

5. The liquid cooling plate according to claim 3, characterized in that, The fastener also includes a threaded bushing, which is threadedly connected to the stud and fitted to the outer wall of the first plate.

6. The liquid cooling plate according to claim 5, characterized in that, The fastener also includes a nut, which is threaded to the stud and located on the threaded bushing. The threaded bushing and the nut are used to connect and lock the electrical components.

7. The liquid cooling plate according to claim 6, characterized in that, The stud extends in a direction perpendicular to the surface of the first plate.

8. The liquid cooling plate according to claim 6, characterized in that, When the fastener locks the electrical component, there is a gap between the limiting plate and the inner wall of the second plate.

9. A battery pack, characterized in that, It includes a liquid cooling plate and electrical components, wherein the electrical components include a component frame and a component assembly disposed on the component frame, and the liquid cooling plate is the liquid cooling plate as described in any one of claims 1-8; The component assembly is provided with a number of mating parts, and each mating part is provided in correspondence with each fixing part.

10. The battery pack according to claim 9, characterized in that, The fastener includes a limiting plate, a stud, a threaded bushing, and a nut. The mating component includes multiple connecting holes on the component frame, each connecting hole being used to pass through the corresponding stud.

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