Battery module and vehicle

Abstract

The utility model discloses a battery module and a vehicle, and belongs to the technical field of batteries. The battery module comprises a battery body, a liquid cooling plate and a plurality of connecting pipes, due to the fact that the end, away from the connecting pipe body, of the connecting bent pipe is directly fixed to the first connecting flange, a vertical short pipe arranged on the first connecting flange can be omitted, and use of a quick connector is omitted. In this way, the occupied space of the whole connecting pipe in the direction perpendicular to the liquid cooling plate can be remarkably reduced, the distance between the connecting pipe and the liquid cooling plate is reduced, and then the packaging size of the battery is effectively reduced.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery module and a vehicle. Background Art

[0002] As the main energy storage element in electric vehicles, batteries are key components of electric vehicles and directly affect the performance of electric vehicles.

[0003] Batteries typically generate heat during operation, raising their internal temperature. If heat isn't dissipated promptly, the accumulated heat can cause leakage, gassing, and smoking, and in severe cases, even violent combustion or explosion. Existing technology uses liquid cooling plates to cool batteries. These plates are connected to the vehicle's liquid cooling system via pipes and quick-connect connectors, allowing the coolant to exchange heat within the plates, thereby lowering the battery temperature.

[0004] However, the distance between the interface of the liquid cooling plate and the interface of the vehicle's liquid cooling system is usually fixed, and the height of the quick-connect connector is usually large, which will increase the distance between the pipe and the liquid cooling plate, and thus increase the volume of the battery package. Utility Model Content

[0005] The present application provides a battery module and a vehicle. This solves the problem of large battery packaging volume in the prior art. The technical solution is as follows:

[0006] In one aspect, a battery module is provided, comprising:

[0007] Battery body, liquid cooling plate and multiple connecting pipes;

[0008] The battery body and the liquid cooling plate are stacked, and the liquid cooling plate has a plurality of fluid inlets and outlets;

[0009] The plurality of connecting pipes correspond to the plurality of fluid inlets and outlets one by one, and each of the connecting pipes comprises: a connecting pipe body, a connecting elbow and a first connecting flange;

[0010] Among them, in the same connecting pipe, the first end of the connecting pipe body is fixedly connected to the liquid cooling plate at the corresponding fluid inlet and outlet, the second end of the connecting pipe body is connected to one end of the connecting elbow, and the end of the connecting elbow facing away from the connecting pipe body is directly fixed on the first connecting flange.

[0011] Optionally, the connecting elbow includes: an elbow body and an annular boss, one end of the elbow body is fixedly connected to the annular boss, and the annular boss is fixedly connected to the first connecting flange.

[0012] Optionally, the annular boss is welded to the first connecting flange.

[0013] Optionally, the first connecting flange has a first opening, and the first opening is located in the area surrounded by the annular boss.

[0014] Optionally, the connecting elbow further comprises: a clamping pipe, which is detachably connected to an end of the elbow body away from the annular boss.

[0015] Optionally, the outer wall of the clamping tube has a plurality of annular clamping portions;

[0016] Wherein, after the clamping tube extends into the second end of the connecting tube body, the plurality of clamping portions abut against the inner wall of the connecting tube body.

[0017] Optionally, in the thickness direction of the liquid cooling plate, the maximum distance between the connecting pipe body and the first connecting flange ranges from 20 mm to 40 mm.

[0018] Optionally, each of the connecting pipes further comprises: a second connecting flange and a cooling pipe;

[0019] The second connecting flange is connected to the first connecting flange, and the cooling pipe is connected to a side of the second connecting flange facing away from the first connecting flange;

[0020] Wherein, the cooling pipe is connected to the connecting elbow through the second connecting flange and the first connecting flange, and the cooling pipe is used to communicate with the liquid cooling system.

[0021] Optionally, the multiple fluid inlets and outlets are distributed on a side of the liquid cooling plate that supports the battery body;

[0022] In a direction perpendicular to the liquid cooling plate, a maximum distance between the connecting pipe body and the liquid cooling plate is smaller than a maximum distance between a side of the battery body facing away from the liquid cooling plate and the liquid cooling plate.

[0023] In another aspect, a vehicle is provided, comprising:

[0024] A vehicle body and a battery module and a liquid cooling system installed in the vehicle body, wherein the liquid cooling plate in the battery module is connected to the liquid cooling system via a connecting pipe, wherein the battery module is any of the battery modules described above.

[0025] The beneficial effects of the technical solutions provided in the embodiments of the present application include at least:

[0026] Because the end of the connecting elbow facing away from the connecting pipe body is directly fixed to the first connecting flange, the vertical short pipe provided on the first connecting flange can be eliminated, eliminating the need for quick-connect connectors. This significantly reduces the space occupied by the entire connecting pipe in the direction perpendicular to the liquid cooling plate, shortens the distance between the connecting pipe and the liquid cooling plate, and effectively reduces the volume of the battery package. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0028] Figure 1 This is a schematic diagram of a battery module structure provided in an embodiment of the present application;

[0029] Figure 2 This is a schematic diagram of the structure of a liquid cooling plate provided in an embodiment of the present application;

[0030] Figure 3 This is a structural diagram of a connecting elbow and a first connecting flange provided in an embodiment of the present application;

[0031] Figure 4 yes Figure 3 An exploded view of the connecting elbow and the first connecting flange is shown;

[0032] Figure 5 This is a structural diagram of a connecting pipe provided in an embodiment of the present application;

[0033] Figure 6 This is a structural diagram of a connecting pipe, a second connecting flange, and a cooling pipe provided in an embodiment of the present application;

[0034] Figure 7 This is another schematic diagram of a battery module structure provided in an embodiment of the present application;

[0035] Figure 8 yes Figure 1 A partial exploded view is shown. DETAILED DESCRIPTION

[0036] In order to make the objectives, technical solutions and advantages of this application clearer, the implementation methods of this application will be further described in detail below with reference to the accompanying drawings.

[0037] Please refer to Figure 1 , Figure 1The battery module 000 may include a battery body 100 , a liquid cooling plate 200 , and a plurality of connecting pipes 300 .

[0038] Please refer to Figure 2 , Figure 2 The figure is a schematic diagram of a liquid cooling plate structure provided in an embodiment of the present application. The battery body 100 and the liquid cooling plate 200 in the battery module 000 are stacked, and the liquid cooling plate 200 in the battery module 000 may have multiple fluid inlets and outlets K. The multiple fluid inlets and outlets K are used to connect to an external cooling system to circulate the coolant within the liquid cooling plate 200, thereby achieving the purpose of dissipating heat from the battery body 100.

[0039] The multiple connecting pipes 300 in the battery module 000 correspond one-to-one with the multiple fluid inlets and outlets K. Each connecting pipe 300 may include a connecting pipe body 301, a connecting elbow 302, and a first connecting flange 303. For example, there are two of each of the multiple fluid inlets and outlets K and the multiple connecting pipes 300, and the two fluid inlets and outlets K correspond to the two connecting pipes 300.

[0040] Among them, in the same connecting pipe 300, the first end of the connecting pipe body 301 is fixedly connected to the liquid cooling plate 200 at the corresponding fluid inlet and outlet K, the second end of the connecting pipe body 301 is connected to one end of the connecting elbow 302, and the end of the connecting elbow 302 facing away from the connecting pipe body 301 is directly fixed on the first connecting flange 303.

[0041] In the present application, the side of the first connecting flange 303 facing away from the connecting elbow 302 is used to connect to an external liquid cooling system, and the liquid cooling plate 200 in the battery module 000 can be connected to the external cooling system through multiple connecting pipes 300.

[0042] For example, the multiple fluid inlets and outlets K may include: a fluid inlet K1 and a fluid outlet K2, and the liquid cooling plate 200 may have liquid cooling channels connected to the fluid inlet K1 and the fluid outlet K2, respectively, and the liquid cooling channels are evenly distributed inside the liquid cooling plate 200. Among them, the connecting pipe 300 connected to the fluid inlet K1 can be called a liquid inlet pipe, and the connecting pipe 300 connected to the fluid outlet K2 can be called a liquid outflow pipe. The liquid inflow pipe and the liquid outflow pipe are respectively connected to the external liquid cooling system, and the external liquid cooling system can be injected into the liquid cooling channel of the liquid cooling plate 200 through the liquid inflow pipe and the fluid inlet K1. Since the liquid cooling channels are evenly distributed inside the liquid cooling plate 200, the liquid cooling plate 200 can dissipate heat from the battery body 100 on the liquid cooling plate 200.

[0043] Typically, because the vertical distance between the first connecting flange 303 and the liquid cooling plate 200 is fixed, the width of the connecting tube 300 on the side of the first connecting flange 303 facing away from the liquid cooling plate 200 needs to be further reduced. However, currently, a short vertical tube is typically provided on the side of the first connecting flange facing away from the liquid cooling plate, and the short vertical tube is connected to the end of the connecting tube via a quick-connect connector. However, the quick-connect connector is typically quite high, which increases the distance between the connecting tube and the liquid cooling plate, and in turn increases the volume of the battery package.

[0044] In this embodiment, the end of the connecting elbow 302 facing away from the connecting pipe body 301 is directly fixed to the first connecting flange 303, eliminating the need for a short vertical pipe on the first connecting flange 303 and the need for a quick-connect connector. This significantly reduces the space occupied by the entire connecting pipe 300 in a direction perpendicular to the liquid cooling plate 200, shortens the distance between the connecting pipe 300 and the liquid cooling plate 200, and effectively reduces the volume of the battery package.

[0045] In summary, this application proposes a battery module comprising a battery body, a liquid cooling plate, and multiple connecting tubes. Because the end of the connecting elbow facing away from the connecting tube body is directly fixed to the first connecting flange, the vertical short tube provided on the first connecting flange can be eliminated, eliminating the need for quick-connect connectors. This significantly reduces the space occupied by the entire connecting tube in a direction perpendicular to the liquid cooling plate, shortens the distance between the connecting tube and the liquid cooling plate, and effectively reduces the volume of the battery package.

[0046] In the examples of this application, please refer to Figure 3 , Figure 3 This is a schematic diagram of the structure of a connecting elbow and a first connecting flange provided in an embodiment of the present application. The connecting elbow 302 in the connecting pipe 300 may include: an elbow body 3021 and an annular boss 3022. One end of the elbow body 3021 is fixedly connected to the annular boss 3022, and the annular boss 3022 is fixedly connected to the first connecting flange 303.

[0047] In this case, the fixed connection between the annular boss 3022 and the first connecting flange 303 improves the structural strength and sealing performance of the connecting pipe 300 .

[0048] For example, the annular boss 3022 in the connecting elbow 302 is welded to the first connecting flange 303. In this way, the sealing performance and mechanical strength between the connecting elbow 302 and the first connecting flange 303 can be further improved by welding.

[0049] In the examples of this application, please refer to Figure 4 , Figure 4 yes Figure 3The first connecting flange 303 in the connecting pipe 300 may have a first opening M1 , and the first opening M1 is located in the area surrounded by the annular boss 3022 .

[0050] In this case, the design of the first opening M1 ensures that the coolant can flow smoothly into the connecting elbow 302 , thereby improving the heat dissipation efficiency of the liquid cooling plate 200 .

[0051] In the embodiments of this application, Figure 4 As shown, the connecting elbow 302 in the battery module 000 may further include a clamping tube 3023 , wherein the clamping tube 3023 is detachably connected to the end of the elbow body 3021 away from the annular boss 3022 .

[0052] Because the connecting elbow 302 and the first connecting flange 303 are welded together, they function as a single unit. During assembly, the connecting pipe body 301 can be first assembled to the liquid cooling plate 200, followed by the first connecting flange 303 being assembled to the external liquid cooling system. Finally, the connecting pipe body 301, the connecting elbow 302, and the first connecting flange 303 can be assembled together using the clamping tube 3023. This not only facilitates assembly of the connecting pipe body 301 and the connecting elbow 302, but also facilitates subsequent maintenance and replacement.

[0053] Furthermore, conventional connecting pipes are typically assembled with the vertical short pipe provided on the first connecting flange in a direction perpendicular to the liquid cooling plate. However, in this embodiment, since the vertical short pipe is no longer required on the first connecting flange 303, the first connecting flange 303 is provided with a connecting elbow 302. Therefore, the connecting pipe body 301 and the clamping pipe 3023 in the connecting elbow 302 can be assembled parallel to the liquid cooling plate 200. By switching from vertical assembly to horizontal assembly, the distance between the connecting pipe 300 and the liquid cooling plate 200 can be further reduced.

[0054] In the embodiments of this application, Figure 4 As shown, the outer wall of the clamping tube 3023 in the connecting elbow 302 has a plurality of annular clamping portions 30231 .

[0055] After the clamping tube 3023 in the connecting elbow 302 extends into the second end of the connecting tube body 301 , the plurality of clamping portions 30231 abut against the inner wall of the connecting tube body 301 .

[0056] In this case, the abutment of the multiple clamping portions 30231 against the inner wall of the connecting pipe body 301 can ensure a secure connection between the connecting elbow 302 and the connecting pipe body 301, thereby improving the reliability of the connection. In addition, the design of the clamping portions 30231 also helps to improve the sealing between the connecting elbow 302 and the connecting pipe body 301, reducing the risk of leakage.

[0057] In the examples of this application, please refer to Figure 5 , Figure 5 Schematic diagram of a connecting pipe structure provided by an embodiment of the present application. In the thickness direction of the liquid cooling plate 200, the maximum distance d1 between the connecting pipe body 301 and the first connecting flange 303 in the connecting pipe 300 ranges from 20 mm to 40 mm.

[0058] For example, in a direction perpendicular to the liquid cooling plate 200 , the maximum distance d1 between the connecting pipe body 301 and the first connecting flange 303 in the connecting pipe 300 is in the range of 28 mm.

[0059] In this way, it can be ensured that the width of the connecting pipe 300 is small in the direction perpendicular to the liquid cooling plate 200, thereby further reducing the volume of the battery package and improving space utilization.

[0060] For example, please refer to Figure 6 , Figure 6 Schematic diagram of a connecting pipe, a second connecting flange, and a cooling pipe provided in an embodiment of the present application. Each connecting pipe 300 in the battery module 000 may further include: a second connecting flange 304 and a cooling pipe 305.

[0061] The second connecting flange 304 in the connecting pipe 300 is connected to the first connecting flange 303 , and the cooling pipe 305 in the connecting pipe 300 is connected to a side of the second connecting flange 304 facing away from the first connecting flange 303 .

[0062] The cooling pipe 305 in the connecting pipe 300 is connected to the connecting elbow 302 through the second connecting flange 304 and the first connecting flange 303 , and the cooling pipe 305 is used to communicate with the liquid cooling system.

[0063] In this case, it can be ensured that the external liquid cooling system can be connected to the liquid cooling plate 200 through the connecting pipe 300, so that the external liquid cooling system can inject coolant into the liquid cooling plate 200 through the connecting pipe 300, thereby achieving effective cooling of the battery body 100.

[0064] In the examples of this application, please refer to Figure 7 and Figure 8 , Figure 7 This is another schematic diagram of a battery module structure provided in an embodiment of the present application. Figure 8 yes Figure 1 The multiple fluid inlets and outlets K in the liquid cooling plate 200 are distributed on the side of the liquid cooling plate 200 that supports the battery body 100.

[0065] In the direction perpendicular to the liquid cooling plate 200 , the maximum distance d2 between the connecting tube body 301 in the connecting tube 300 and the liquid cooling plate 200 is smaller than the maximum distance d3 between the side of the battery body 100 facing away from the liquid cooling plate 200 and the liquid cooling plate 200 .

[0066] In this case, by reducing the maximum distance d2 between the connecting tube body 301 and the liquid cooling plate 200, the connecting tube 300 as a whole does not extend beyond the side of the battery body 100 away from the liquid crystal panel 200, thereby helping to further reduce the volume of the battery package and improve space utilization.

[0067] In summary, this application proposes a battery module comprising a battery body, a liquid cooling plate, and multiple connecting tubes. Because the end of the connecting elbow facing away from the connecting tube body is directly fixed to the first connecting flange, the vertical short tube provided on the first connecting flange can be eliminated, eliminating the need for quick-connect connectors. This significantly reduces the space occupied by the entire connecting tube in a direction perpendicular to the liquid cooling plate, shortens the distance between the connecting tube and the liquid cooling plate, and effectively reduces the volume of the battery package.

[0068] The present application also provides a vehicle, which can be a hybrid vehicle, a gasoline-powered vehicle, or a range-extended electric vehicle. The vehicle can include a vehicle body, a battery module 000 mounted within the vehicle body, and a liquid cooling system. A liquid cooling plate 200 in the battery module 000 is connected to the liquid cooling system via a connecting pipe 300. The battery module 000 can be any of the aforementioned battery modules 000.

[0069] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The term "plurality" refers to two or more than two, unless expressly limited otherwise.

[0070] The above description is merely an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A battery module, characterized in that: include: A battery body (100), a liquid cooling plate (200), and a plurality of connecting pipes (300); The battery body (100) and the liquid cooling plate (200) are stacked, and the liquid cooling plate (200) has a plurality of fluid inlets and outlets (K); The plurality of connecting pipes (300) correspond to the plurality of fluid inlets and outlets (K) one by one, and each connecting pipe (300) comprises: a connecting pipe body (301), a connecting elbow (302) and a first connecting flange (303); Wherein, in the same connecting pipe (300), the first end of the connecting pipe body (301) is fixedly connected to the liquid cooling plate (200) at the corresponding fluid inlet and outlet (K), the second end of the connecting pipe body (301) is connected to one end of the connecting elbow (302), and the end of the connecting elbow (302) facing away from the connecting pipe body (301) is directly fixed to the first connecting flange (303).

2. The battery module according to claim 1, wherein: The connecting elbow (302) comprises: an elbow body (3021) and an annular boss (3022); one end of the elbow body (3021) is fixedly connected to the annular boss (3022); and the annular boss (3022) is fixedly connected to the first connecting flange (303).

3. The battery module according to claim 2, characterized in that: The annular boss (3022) is welded to the first connecting flange (303).

4. The battery module according to claim 2, wherein: The first connecting flange (303) has a first opening (M1), and the first opening (M1) is located in the area surrounded by the annular boss (3022).

5. The battery module according to claim 2, characterized in that: The connecting elbow (302) further comprises a clamping pipe (3023), wherein the clamping pipe (3023) is detachably connected to an end of the elbow body (3021) that is away from the annular boss (3022).

6. The battery module according to claim 5, characterized in that: The outer wall of the clamping tube (3023) is provided with a plurality of annular clamping portions (30231); After the clamping tube (3023) extends into the second end of the connecting tube body (301), the plurality of clamping portions (30231) abut against the inner wall of the connecting tube body (301).

7. The battery module according to any one of claims 1 to 6, characterized in that: In the thickness direction of the liquid cooling plate (200), a maximum distance d1 between the connecting pipe body (301) and the first connecting flange (303) ranges from 20 mm to 40 mm.

8. The battery module according to any one of claims 1 to 6, characterized in that: Each of the connecting pipes (300) further comprises: a second connecting flange (304) and a cooling pipe (305); The second connecting flange (304) is connected to the first connecting flange (303), and the cooling pipe (305) is connected to a side of the second connecting flange (304) facing away from the first connecting flange (303); The cooling pipe (305) is connected to the connecting elbow (302) through the second connecting flange (304) and the first connecting flange (303), and the cooling pipe (305) is used to communicate with the liquid cooling system.

9. The battery module according to any one of claims 1 to 6, characterized in that: The multiple fluid inlets and outlets (K) are all distributed on a side of the liquid cooling plate (200) that supports the battery body (100); In a direction perpendicular to the liquid cooling plate (200), a maximum distance d2 between the connecting tube body (301) and the liquid cooling plate (200) is smaller than a maximum distance d3 between a side of the battery body (100) facing away from the liquid cooling plate (200) and the liquid cooling plate (200).

10. A vehicle, characterized in that: include: A vehicle body, a battery module (000) installed in the vehicle body, and a liquid cooling system, wherein a liquid cooling plate (200) in the battery module (000) is connected to the liquid cooling system via a connecting pipe (300), wherein the battery module (000) is a battery module according to any one of claims 1 to 9.

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