Battery pack and electric device

Abstract

The application provides a battery pack and an electric device, the battery pack comprising a box body, an output assembly and a sealing piece, the box body comprising a cover plate, the cover plate comprising a recess; the output assembly being located in the box body and comprising an output terminal and an output base, the output terminal being fixedly connected with the output base and extending out of the box body from the recess; the sealing piece being located in the box body and sleeved on the output terminal, the sealing piece being in abutment with the output base and the recess respectively. The battery pack and the electric device provided by the application can ensure that the cooling medium in the box body does not flow out (liquid leakage) from the position where the output assembly is located.

Description

Technical Field

[0001] This application relates to the field of battery technology, specifically to battery packs and electrical equipment. Background Technology

[0002] Most connectors on the market require the plug and socket to be properly matched to achieve a waterproof effect, and they are all connected by bolt fastening. This design has the following drawbacks: when the liquid cooling solution inside the battery pack adopts an immersion solution, it is impossible to make a single socket (output component) waterproof, which will cause the cooling medium inside the box to flow out from the output component location (leakage). Utility Model Content

[0003] Embodiments of this application provide a battery pack and an electrical device, wherein the output component of the battery pack can ensure that the cooling medium inside the housing does not flow out from the location of the output component.

[0004] In a first aspect, embodiments of this application provide a battery pack, the battery pack comprising:

[0005] The housing includes a cover plate, the cover plate including a recess;

[0006] An output component, located within the housing and including an output terminal and an output base, wherein the output terminal is fixedly connected to the output base and extends from the recess to the outside of the housing; and

[0007] A sealing element is located inside the housing and sleeved on the output terminal; the sealing element is located between the output base and the recess and is respectively sealed to the output base and the recess.

[0008] In some embodiments of this application, the connection between the output base and the output terminal is integrally formed or welded.

[0009] In some embodiments of this application, the output terminal includes a first connection surface for connecting to an external device;

[0010] The output assembly further includes an insulating element that covers the surfaces of the output base and the output terminal, excluding the first connecting surface, and the sealing element is in contact with the insulating element.

[0011] In some embodiments of this application, the insulating element is integrally injection molded with the output base and the output terminal.

[0012] In some embodiments of this application, the output component further includes a limiting part, which is fixedly connected to the output base and spaced apart from the output terminal;

[0013] The end of the seal that is away from the recess is connected to the limiting part.

[0014] In some embodiments of this application, the limiting portion is part of the insulating member.

[0015] In some embodiments of this application, the end of the seal facing the limiting portion has a first receiving groove, and the limiting portion is received within the first receiving groove; and / or

[0016] The end of the seal facing the recess has a second receiving groove.

[0017] In some embodiments of this application, the sealing element includes a first sealing portion, a second sealing portion, and a third sealing portion, wherein the first sealing portion and the second sealing portion are spaced apart, and the third sealing portion connects the first sealing portion and the second sealing portion;

[0018] The first receiving groove and / or the second receiving groove are formed by the first sealing part, the second sealing part and the third sealing part surrounding it.

[0019] In some embodiments of this application, the battery pack further includes a battery module and a CCS connector, the output component further includes a connecting part, the connecting part is connected to the output base, and the CCS connector connects the battery module and the connecting part.

[0020] In some embodiments of this application, the connecting portion includes a second connecting surface, and the insulating member further covers the surface of the connecting portion other than the second connecting surface.

[0021] In some embodiments of this application, the battery module includes a plurality of batteries, and the extension direction of the output terminal is the same as the extension direction of the batteries.

[0022] In some embodiments of this application, the battery pack is cooled by immersion cooling, and the cover plate is a cooling plate.

[0023] In some embodiments of this application, the housing further includes a shell, and the cover plate is sealed to the shell to form a cavity, wherein the output component and the seal are located within the cavity; the cover plate further includes a main body portion, and the recess is connected to the main body portion and extends from the main body portion into the shell.

[0024] In some embodiments of this application, the housing further includes a support member, which is located within the cavity and fixedly connected to the housing.

[0025] The output base is disposed on the support member, and the output base and the sealing member are located between the support member and the recess.

[0026] In some embodiments of this application, the seal abuts against the recess and the output base, respectively.

[0027] Secondly, this application also provides an electrical device, which includes the battery pack described above.

[0028] The battery pack and electrical equipment provided in this application include a housing, an output component, and a seal. The housing includes a cover plate with a recess. The output component is located inside the housing and includes an output terminal and an output base. The output terminal is fixedly connected to the output base and extends from the recess to the outside of the housing. The seal is located inside the housing and sleeved on the output terminal. The seal is located between the output base and the recess and abuts against both the output base and the recess. The housing provides upward support to the output component. The partially concave cover plate can compress the seal downward. After the cover plate, the seal, and the output base of the output component are properly fitted, a good seal is achieved between them, thereby ensuring that the cooling medium inside the housing does not flow out from the location of the output component. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a perspective view of a battery pack provided in some embodiments of this application.

[0031] Figure 2 for Figure 1 The image shows a partial exploded view of the battery pack.

[0032] Figure 3 for Figure 2 Enlarged view of the components of the battery pack (excluding the casing).

[0033] Figure 4 for Figure 2 An exploded view of the components of the battery pack (excluding the casing).

[0034] Figure 5 for Figure 1 The battery pack shown is a top view.

[0035] Figure 6 For along Figure 5The three-dimensional sectional view of AA is shown.

[0036] Figure 7 For along Figure 6 Enlarged view of point B.

[0037] Figure 8 A schematic diagram of the electrical equipment provided in this application.

[0038] Explanation of reference numerals in the attached figures:

[0039] 1000 Electrical equipment; 100 Battery pack; 10 Housing; 20 Output component; 30 Seal; 40 Battery module; 50 CCS connector; X, First direction; Y, Second direction; Z, Third direction;

[0040] 11. Cover plate; 12. Shell; 13. Supporting component; 111. Recess; 112. Main body; 113. Groove; 14. Cavity;

[0041] 21. Output terminal; 211. First connecting surface; 22. Output base; 23. Connecting part; 231. Second connecting surface; 24. Limiting part; 25. Insulating component;

[0042] 31. First receiving groove; 32. Second receiving groove; 33. First sealing part; 34. Second sealing part; 35. Third sealing part;

[0043] 41. Battery; 411. Terminal; 42. Electrode. Detailed Implementation

[0044] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of this application and are not intended to limit this application. In this application, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0045] In related technologies, connectors mostly require the plug and socket to be properly matched to achieve a waterproof effect, and the output terminals and output base are generally connected by bolts. This design has the following drawbacks: when the liquid cooling solution in the battery pack adopts an immersion solution, it is impossible to make a single socket (output component) waterproof, which will cause the cooling medium inside the box to not flow out from the location of the output component (leakage).

[0046] To improve the above problems, firstly, please refer to [link / reference needed]. Figures 1 to 7 This application provides a battery pack 100, which includes a housing 10, an output component 20, and a sealing element 30. The housing 10 includes a cover plate 11, which includes a recess 111. The output component 20 is located inside the housing 10 and includes an output terminal 21 and an output base 22. The output terminal 21 is fixedly connected to the output base 22 and extends from the recess 111 to the outside of the housing 10. The sealing element 30 is located inside the housing 10 and is sleeved on the output terminal 21. The sealing element 30 abuts against the output base 22 and the recess 111, respectively.

[0047] In this application, the housing 10 of the battery pack 100 can provide upward support to the output component 20. The cover plate 11 is partially concave (recess 111), which can compress the sealing member 30 downward. After the cover plate 11, the sealing member 30 and the output base 22 of the output component 20 are in place, a good seal is achieved between the cover plate 11, the sealing member 30 and the output base 22 of the output component 20, thereby ensuring that the cooling medium inside the housing 10 will not flow out from the location of the output component 20.

[0048] In some embodiments of this application, the battery pack 100 is cooled by immersion cooling. The cover plate 11 is a cooling plate, and the cooling medium can flow from the cover plate 11 into the housing 10 to cool the battery module.

[0049] The housing 10 further includes a shell 12, and the cover plate 11 is sealed to the shell 12 to form a cavity 14. The output component 20 and the sealing element 30 are located in the cavity 14. The cover plate 11 also includes a main body 112, and the recess 111 is connected to the main body 112 and extends from the main body 112 into the shell 12.

[0050] The recess 111 forms a groove 113, and the end of the output terminal 21 that protrudes from the cover plate 11 is received in the groove 113.

[0051] In some embodiments of this application, the housing 10 further includes a support member 13, which is located within the cavity 14 and fixedly connected to the housing 12. The output base 22 is disposed on the support member 13, and the output base 22 and the sealing member 30 are located between the support member 13 and the recess 111. The sealing member 30 abuts against both the recess 111 and the output base 22.

[0052] This application eliminates the connector and uses the cover plate 11 and the support member 13 to compress the seal 30, so that the cover plate 11, the seal 30 and the output base 22 of the output assembly 20 are properly fitted together to achieve a good seal between the cover plate 11, the seal 30 and the output base 22 of the output assembly 20. This ensures that the cooling medium inside the housing 10 will not flow out from the location of the output assembly 20, thereby preventing leakage of the immersion liquid inside the battery pack in the immersion solution and solving the problem of the high-voltage connector socket not being waterproof.

[0053] In some embodiments of this application, the output component 20 is a high-voltage output component.

[0054] In some embodiments of this application, the number of output components 20 is two, one being a positive output component and the other a negative output component.

[0055] In some embodiments of this application, the two output components 20 are respectively located on opposite sides of the housing 10 in the first direction X, and the two output terminals 21 are also respectively located at opposite ends of the housing 10 in the second direction Y, wherein the first direction X and the second direction Y intersect. In this embodiment, the first direction X and the second direction Y are perpendicular to each other.

[0056] In some embodiments of this application, the connection between the output base 22 and the output terminal 21 is integrally formed or welded.

[0057] In the prior art, bolts are often used to connect the output terminal and the output base. In the immersion liquid, the bolts may loosen or other risks. This application improves the reliability of the connection between the output base 22 and the output terminal 21 by making the connection between the output base 22 and the output terminal 21 integrally formed or welded, without the need for bolts or other external objects.

[0058] In some embodiments of this application, the output terminal 21 includes a first connection surface 211 for connecting an external device (not shown). The output assembly 20 also includes an insulating member 25, which covers the surfaces of the output base 22 and the output terminal 21 except for the first connection surface 211, and the sealing member 30 is in contact with the insulating member 25.

[0059] In this embodiment, the recess 111 also contacts the insulating member 25.

[0060] This application provides insulation protection for the output base 22 and the output terminal 21 by forming the insulating member 25 on the surface of the output assembly 20. This not only reduces the risk of short circuits caused by contact between the cooling medium (e.g., water) and the output base 22 and the output terminal 21, but also reduces the probability of leakage of the cooling medium (e.g., water) through the gap between the output base 22 and the output terminal 21.

[0061] In some embodiments of this application, the insulating member 25 is integrally injection molded with the output base 22 and the output terminal 21.

[0062] In this application, the insulating component 25 is integrally injection molded onto the output base 22 and the output terminal 21, which allows the insulating component 25 to be tightly bonded to the output base 22 and the output terminal 21, thereby further reducing the probability of cooling medium (e.g., water) overflowing (leaking) through the gap between the output base 22 and the output terminal 21.

[0063] In some embodiments of this application, the output component 20 further includes a connecting portion 23, which is connected to the output base 22 and is used to connect the CCS connector. The length of the connecting portion 23 is greater than the length of the output base 22. The length of the connecting portion 23, as referred to herein, refers to its dimension in the arrangement direction of the plurality of batteries 41 of the battery module 40.

[0064] In some embodiments of this application, the connecting portion 23 includes a second connecting surface 231, and the insulating member 25 also covers the surface of the connecting portion 23 other than the second connecting surface 231.

[0065] In some embodiments of this application, the output component 20 further includes a limiting portion 24, which is fixedly connected to the output base 22 and spaced apart from the output terminal 21. The end of the sealing member 30 away from the recess 111 is connected to the limiting portion 24.

[0066] In this application, a limiting portion 24 is provided around the output terminal 21 of the output assembly 20. The limiting portion 24 is spaced around the output terminal 21 to form a groove (not shown) between the limiting portion 24 and the output terminal 21. One end of the first sealing portion 33 (see below) of the sealing member 30 is received in the groove, and one end of the second sealing portion 34 (see below) of the sealing member 30 is received on the side of the limiting portion 24 away from the output terminal 21. The limiting portion 24 is received in the first receiving groove 31 (see below) of the sealing member 30. The limiting portion 24 serves to limit and fix the sealing member 30.

[0067] In some embodiments of this application, the limiting part 24 is made of plastic.

[0068] In other embodiments, the limiting part 24 may be made of materials other than plastic, and is not limited to plastic.

[0069] In some embodiments of this application, the limiting portion 24 is part of the insulating member 25.

[0070] In some embodiments of this application, the end of the sealing member 30 facing the limiting part 24 has a first receiving groove 31, and the limiting part 24 is received in the first receiving groove 31.

[0071] This application increases the reliability (sealing performance) of the connection between the seal 30 and the limiting part 24 by providing the first receiving groove 31 on the seal 30 and receiving the limiting part 24 in the first receiving groove 31, thereby further increasing the difficulty of the cooling medium flowing to the outside through the gap between the seal 30 and the limiting part 24 (leakage).

[0072] In some embodiments of this application, the end of the seal 30 away from the output base 22 has a second receiving groove 32.

[0073] This application, by having a second receiving groove 32 at the end of the seal 30 facing the recess 111, not only ensures that the thickness of the first sub-seal 33 (see below) and the second sealing portion 34 (see below) is uniform when the seal 30 is manufactured using a mold, thus reducing deformation of the first sealing portion 33 and the second sealing portion 34 (see below) due to uneven wall thickness, but also accommodates external moisture or cooling medium overflowing from between the recess 111 and the seal 30. Furthermore, because the thickness of the first sub-seal 33 (see below) and the second sealing portion 34 (see below) is uniform, it is not necessary to specifically distinguish the two ends of the seal 30 during installation, providing convenience for installation.

[0074] In some embodiments of this application, the seal 30 includes a first sealing portion 33, a second sealing portion 34, and a third sealing portion 35. The first sealing portion 33 and the second sealing portion 34 are spaced apart, and the third sealing portion 35 connects the first sealing portion 33 and the second sealing portion 34. The first receiving groove 31 and / or the second receiving groove 32 are formed by the first sealing portion 33, the second sealing portion 34, and the third sealing portion 35 surrounding it.

[0075] In some embodiments of this application, the battery pack 100 further includes a battery module 40 and a CCS connector 50, wherein the CCS connector 50 connects the battery module 40 and the second connection surface 231 of the connection portion 23.

[0076] In some embodiments of this application, the battery module 40 includes a plurality of batteries 41. The batteries 41 are electrically connected to the connection portion 23 of the output assembly 20 via the CCS connector 50. The extension direction of the output terminal 21 is the same as the extension direction of the batteries 41. Both the output terminal 21 and the batteries 41 extend along a third direction Z, which intersects the first direction X and the second direction Y, respectively. In this embodiment, the third direction Z is perpendicular to both the first direction X and the second direction Y, respectively.

[0077] This application designs the extension direction of the output terminal 21 to be the same as the extension direction of the battery 41, so that the end of the output terminal 21 exposed by the cover plate 11 is received in the groove 113 formed by the recess 111. The output terminal 21 occupies relatively little space and does not need to reserve space for the insertion and removal of the connector, which can effectively solve the problem of insufficient space in the first direction X and the second direction Y in the battery pack.

[0078] In some embodiments of this application, the battery 41 has terminals 411, one of the CCS connectors 50 being electrically connected to the terminal 411 (positive or negative), and the other CCS connector 50 being electrically connected to the battery casing (negative or positive).

[0079] In some embodiments of this application, the battery module 40 further includes a plate 42 for connecting multiple batteries 41 in parallel or in series.

[0080] Secondly, please refer to Figure 8 This application also provides an electrical device 1000, which includes a battery pack 100 as described above.

[0081] The specific structure of the battery pack 100 is as described in the above embodiments. Since the electrical device 1000 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0082] It is understood that the electrical equipment 1000 includes, but is not limited to, electric toys, power tools, electric vehicles, automobiles, ships, spacecraft, etc. Electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc. Automobiles can be gasoline-powered vehicles, natural gas-powered vehicles, and new energy vehicles.

[0083] The embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A battery pack, characterized in that, include: The housing includes a cover plate, the cover plate including a recess; An output component, located inside the housing, includes an output terminal and an output base. The output terminal is fixedly connected to the output base and extends from the recess to the outside of the housing. and A sealing element is located inside the housing and sleeved on the output terminal; the sealing element is located between the output base and the recess and is respectively sealed to the output base and the recess.

2. The battery pack as described in claim 1, characterized in that, The connection between the output base and the output terminal is either integrally formed or welded.

3. The battery pack as described in claim 1, characterized in that, The output terminal includes a first connection surface, which is used to connect to an external device. The output assembly further includes an insulating element that covers the surfaces of the output base and the output terminal, excluding the first connecting surface, and the sealing element is in contact with the insulating element.

4. The battery pack as described in claim 3, characterized in that, The insulating component is integrally injection molded with the output base and the output terminal.

5. The battery pack as described in claim 3, characterized in that, The output component also includes a limiting part, which is fixedly connected to the output base and spaced apart from the output terminal; The end of the seal that is away from the recess is connected to the limiting part.

6. The battery pack as described in claim 5, characterized in that, The limiting part is part of the insulating element.

7. The battery pack as described in claim 5, characterized in that, The sealing member has a first receiving groove at one end facing the limiting portion, and the limiting portion is received within the first receiving groove; and / or The end of the seal facing the recess has a second receiving groove.

8. The battery pack as described in claim 7, characterized in that, The sealing element includes a first sealing part, a second sealing part and a third sealing part, wherein the first sealing part and the second sealing part are spaced apart, and the third sealing part is connected to the first sealing part and the second sealing part; The first receiving groove and / or the second receiving groove are formed by the first sealing part, the second sealing part and the third sealing part surrounding it.

9. The battery pack as described in claim 3, characterized in that, The battery pack also includes a battery module and a CCS connector. The output component also includes a connecting part, which is connected to the output base. The CCS connector connects the battery module and the connecting part.

10. The battery pack as claimed in claim 9, characterized in that, The connecting portion includes a second connecting surface, and the insulating member further covers the surface of the connecting portion other than the second connecting surface.

11. The battery pack as claimed in claim 9, characterized in that, The battery module includes multiple batteries, and the extension direction of the output terminal is the same as the extension direction of the batteries.

12. The battery pack according to any one of claims 1-11, characterized in that, The battery pack is cooled by immersion cooling, and the cover plate is a cooling plate.

13. The battery pack according to any one of claims 1-11, characterized in that, The enclosure also includes a shell, and the cover plate is sealed to the shell to form a cavity, wherein the output component and the sealing element are located within the cavity; The cover plate also includes a main body portion, and the recess is connected to the main body portion and extends from the main body portion into the housing.

14. The battery pack as claimed in claim 13, characterized in that, The housing also includes a support member, which is located within the cavity and is fixedly connected to the housing. The output base is disposed on the support member, and the output base and the sealing member are located between the support member and the recess.

15. The battery pack according to any one of claims 1-11, characterized in that, The sealing element abuts against the recess and the output base respectively.

16. An electrical appliance, characterized in that, Includes the battery pack as described in any one of claims 1-15.

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