Battery pack and electric device

Abstract

The utility model discloses a battery pack and a power utilization device, and belongs to the technical field of batteries, and the battery pack comprises a box body, a bracket, a plurality of electrical elements and a liquid cooling pipeline, the box body comprises a plurality of side plates, and one of the side plates is provided with an opening; the support covers the opening and is connected with the side plates, and the support is provided with a plurality of assembly holes and ports; the plurality of electrical elements are respectively connected with the bracket through the plurality of assembly holes; and the liquid cooling pipeline is connected with the port. According to the embodiment of the invention, the electrical elements and the liquid cooling pipeline are integrated on one bracket, so that the number of openings can be reduced, and the control on the sealing performance of the opening positions is reduced, the single batteries in the box body can be protected from being influenced by external environments such as dust and water vapor, the sealing performance and the protection grade of the battery pack are ensured, and the service life of the battery pack is prolonged. And the overall performance and safety of the battery pack are ensured.

Description

Technical Field

[0001] This application belongs to the field of battery technology, specifically relating to a battery pack and an electrical device. Background Technology

[0002] With the rapid development of new energy vehicles, the automotive industry has increasingly higher requirements for the safety and stability of batteries, as well as for the sealing and protection levels of battery packs. Current battery packs cannot guarantee sealing. Utility Model Content

[0003] Purpose of the utility model: The embodiments of this application provide a battery pack and an electrical device, which aim to solve the technical problem that the sealing performance of the battery pack cannot be guaranteed.

[0004] Technical solution: This application provides a battery pack, including:

[0005] The enclosure includes multiple side panels, one of which has an opening;

[0006] The bracket has an opening sealed by a cover and connected to the side plate; the bracket has multiple mounting holes and ports.

[0007] Multiple electrical components are connected to the bracket through multiple mounting holes;

[0008] Liquid cooling piping, liquid cooling piping connection port.

[0009] In some embodiments, the housing further includes a bottom plate, which is connected to and encloses a plurality of side plates to form a receiving cavity;

[0010] The battery pack includes a limiting assembly located between the bracket and the base plate and connected to the bracket and the base plate respectively.

[0011] In some embodiments, the limiting component includes an elastic element, a fixing element, and a connecting element. The elastic element is connected to the bracket, the fixing element is connected to the base plate, and the connecting element is connected to both the elastic element and the fixing element.

[0012] In some embodiments, the bracket includes a bracket body and a folded edge portion, the folded edge portion having a groove;

[0013] The elastic element includes a guide portion, a first limiting portion, and a second limiting portion. The guide portion is located between the first limiting portion and the second limiting portion and is connected to the first limiting portion and the second limiting portion respectively. The guide portion passes through the groove, and the first limiting portion and the second limiting portion clamp the folded edge portion.

[0014] In some embodiments, the bracket includes a bracket body and a folded edge portion, the folded edge portion having a plurality of grooves;

[0015] The number of limiting components is multiple, and the multiple limiting components are arranged at intervals along the first direction. The elastic elements of the multiple limiting components are respectively inserted into the groove and connected to the folded edge.

[0016] In some embodiments, the fastener has a rectangular cross-sectional shape and a through hole extending along a first direction.

[0017] In some embodiments, the bracket includes a bracket body and a protrusion, the bracket body surrounding the protrusion, the protrusion protruding from the connection with the bracket body toward a side away from the receiving cavity, the protrusion passing through an opening, and the bracket body being connected to a side plate.

[0018] In some embodiments, the bracket body has multiple fixing holes, and the bracket body is connected to the side plate by fasteners passing through the fixing holes.

[0019] In some embodiments, the plurality of electrical components include a first connector and a second connector, wherein the first connector and the second connector are arranged at intervals;

[0020] The battery pack includes a conductive busbar, with the copper busbar connected to at least one of a first connector and a second connector.

[0021] Accordingly, this application provides an electrical device including the battery pack described above.

[0022] Beneficial Effects: The battery pack of this application embodiment includes a housing, a bracket, multiple electrical components, and liquid cooling pipes. The housing includes multiple side plates, one of which has an opening. The bracket covers the opening and is connected to the side plate, and has multiple mounting holes and multiple ports. The multiple electrical components are connected to the bracket through the multiple mounting holes. The liquid cooling pipes are connected to the ports. By integrating the electrical components and liquid cooling pipes onto a single bracket, this application embodiment reduces the number of openings on the side plates, reduces the need for strict control over the sealing of the openings, and thus protects the individual batteries inside the housing from external environmental influences such as dust and moisture, ensuring the battery pack's sealing and protection level, and guaranteeing the overall performance and safety of the battery pack.

[0023] The electrical device in this application includes the battery pack described above. Therefore, the electrical device can have all the technical features and beneficial effects of the battery pack described above, which will not be repeated here. Attached Figure Description

[0024] 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.

[0025] Figure 1 This is a schematic diagram of the structure of a lithium-ion battery pack for electric vehicles in the prior art;

[0026] Figure 2 This is a schematic diagram of the structure of the box in the prior art;

[0027] Figure 3 This is a schematic diagram of a support structure provided with electrical components and liquid cooling pipelines according to an embodiment of this application;

[0028] Figure 4 This is a schematic diagram of a support structure provided with electrical components and liquid cooling pipelines according to another embodiment of this application;

[0029] Figure 5 This is a schematic diagram of the structure of a bracket according to an embodiment of this application;

[0030] Figure 6 This is a schematic diagram of the structure of a bracket according to another embodiment of this application;

[0031] Figure 7 This is a schematic diagram of the structure of an elastic element according to an embodiment of this application.

[0032] Explanation of reference numerals in the attached figures:

[0033] 10. Housing; 11. Base plate; 12. First long side plate; 13. Second long side plate; 14. First short side plate; 15. Second short side plate; 141. Maintenance switch; 142. Low-voltage input interface; 143. High-voltage input interface; 144. Battery positive terminal interface; 145. Battery negative terminal interface; 146. Water inlet; 147. Water outlet; 2. Bracket; 3. Electrical components; 4. Liquid cooling pipeline; 5. Limiting assembly; 6. Conductive busbar; 20. Assembly hole; 21. Port; 22. Bracket body; 23. Folded edge; 24. Protrusion; 30. First connector; 31. Second connector; 50. Elastic element; 51. Fixing element; 52. Connecting element; 220. Fixing hole; 230. Channel; 500. Guide part; 501. First limiting part; 502. Second limiting part; 510. Through hole; X, First direction. Detailed Implementation

[0034] The technical solutions of 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. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0035] In the description of this application, it should be understood that the terms "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application 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, and therefore should not be construed as a limitation on this application. 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 indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, and "at least one" can mean one, two, or more, unless otherwise explicitly specified. In the description of this application, "perpendicular" means completely perpendicular to 90° or almost completely perpendicular, for example, the range of included angles from 80° to 100° is considered perpendicular. Similarly, "parallel" means completely parallel or almost completely parallel, for example, the range of completely parallel angles from 10° is considered parallel.

[0036] The applicant noted that with the rapid development of new energy vehicles, the automotive industry has increasingly higher requirements not only for the safety and stability of batteries, but also for the sealing and protection level of battery packs. Current battery packs cannot guarantee sealing.

[0037] In existing technologies, such as Figure 1 As shown, the battery pack includes a housing 10, which is rectangular in shape. The housing 10 includes a bottom plate 11, a first long side plate 12, a second long side plate 13, a first short side plate 14, and a second short side plate 15. The bottom plate 11, the first long side plate 12, the second long side plate 13, the first short side plate 14, and the second short side plate 15 form a cuboid space for accommodating the lithium-ion battery module.

[0038] In existing technologies, such as Figure 2 The first short side plate 14 is provided with a maintenance switch 141, a low-voltage input interface 142, a high-voltage input interface 143, a battery positive terminal interface 144, a battery negative terminal interface 145, a water inlet 146, and a water outlet 147 in its upper middle part. In the prior art, multiple openings need to be made on the side plate, which cannot guarantee the sealing of the battery pack.

[0039] In view of this, this application provides a battery pack including a housing, a bracket 2, multiple electrical components 3, and a liquid cooling pipeline 4; the housing includes multiple side panels, one of which has an opening; the bracket 2 covers the opening and is connected to the side panel, and the bracket 2 has multiple mounting holes 20 and multiple ports 21; the multiple electrical components 3 are respectively connected to the bracket 2 through the multiple mounting holes 20; the liquid cooling pipeline 4 is connected to the ports 21. This application integrates the electrical components 3 and the liquid cooling pipeline 4 onto a single bracket 2, thereby reducing the number of side panel openings and reducing the control over the sealing of the openings. This protects the individual batteries inside the housing from external environmental influences such as dust and moisture, ensuring the battery pack's sealing and protection level, and guaranteeing the overall performance and safety of the battery pack.

[0040] The battery pack and power supply device of this application will now be described in detail with reference to the accompanying drawings. Unless otherwise specified, the features of the following embodiments and implementations can be combined with each other.

[0041] Figure 3 This is a schematic diagram of a support 2 provided with electrical components 3 and liquid cooling pipes 4 according to an embodiment of this application; Figure 4 This is a schematic diagram of the structure of a bracket 2 provided with electrical components 3 and liquid cooling pipes 4 according to another embodiment of this application; Figure 5 This is a schematic diagram of the structure of a bracket 2 according to an embodiment of this application; Figure 6 This is a schematic diagram of the structure of a bracket 2 according to another embodiment of this application; Figure 7 This is a schematic diagram of the structure of an elastic element 50 according to an embodiment of this application.

[0042] refer to Figure 3 The battery pack of this embodiment includes a housing, a bracket 2, multiple electrical components 3, and liquid cooling pipes 4. The housing includes multiple side panels, one of which has an opening. The housing is used to house multiple individual batteries, a liquid cooling assembly, and multiple electrical components 3. The liquid cooling assembly is used to regulate the temperature of the individual batteries. (Refer to...) Figure 5The bracket 2 covers the opening and connects to the side plate. The bracket 2 has multiple mounting holes 20 and multiple ports 21. Multiple electrical components 3 are connected to the bracket 2 through the mounting holes 20. The liquid cooling assembly includes a liquid cooling pipe 4, which is connected to the ports 21 and is used to circulate the coolant. The electrical components 3 are used to transmit and control the power of the battery pack. The bracket 2 provides physical support for the electrical components 3 and the liquid cooling pipe 4. In this embodiment, by integrating the electrical components 3 and the liquid cooling pipe 4 onto a single bracket 2, the number of openings can be reduced, and the control over the sealing of the openings can be reduced. This protects the individual batteries inside the enclosure from external environmental influences such as dust and moisture, ensuring the sealing and protection level of the battery pack and guaranteeing the overall performance and safety of the battery pack.

[0043] In some embodiments, refer to Figure 3 The housing also includes a bottom plate, which is connected to multiple side plates and encloses a receiving cavity. The battery pack includes a limiting component 5, which is located between the bracket 2 and the bottom plate and connected to both the bracket 2 and the bottom plate. The limiting component 5 can limit the bracket 2, preventing displacement during assembly and ensuring the stability of the entire battery pack structure. In some embodiments, multiple electrical components 3 and liquid cooling pipes 4 need to be installed on the bracket 2 first, and then the bracket 2 is fixed to the side plate. In this embodiment, the limiting component 5 can pre-fix the bracket 2, facilitating the subsequent precise installation of the bracket 2 and the side plate, thereby improving assembly efficiency and ensuring the assembly quality and structural stability of the battery pack.

[0044] In some embodiments, refer to Figure 4 The limiting component 5 includes an elastic element 50, a fixing element 51, and a connecting element 52. The elastic element 50 is connected to the bracket 2, the fixing element 51 is connected to the base plate, and the connecting element 52 is connected to both the elastic element 50 and the fixing element 51. The elastic element 50 has a certain elasticity and tolerance allowance, and can adapt to different working conditions through deformation such as compression and tension. For example, there may be certain errors in the installation of the bracket 2 and the side plate. The tolerance allowance of the elastic element 50 can compensate for these dimensional errors to ensure that the bracket 2 and the side plate can fit together smoothly during assembly and complete the assembly process.

[0045] In some embodiments, refer to Figure 5 The bracket 2 includes a bracket body 22 and a folded edge portion 23, the folded edge portion 23 having a groove 230; the bracket body 22 is connected to the side plate, the folded edge portion 23 is connected to the bracket body 22 and extends towards the receiving cavity, the folded edge portion 23 is provided with a groove 230 for positioning the elastic element 50. (Refer to...) Figure 4 and Figure 7The elastic element 50 includes a guide portion 500, a first limiting portion 501, and a second limiting portion 502. The guide portion 500 is located between and connected to the first limiting portion 501 and the second limiting portion 502. The guide portion 500 passes through the groove 230, and the first limiting portion 501 and the second limiting portion 502 clamp the folded edge portion 23. With this configuration, the guide portion 500 can be movably inserted into the groove 230. During assembly, the elastic element 50 can move and deform within the groove 230 to a certain extent, ensuring smooth assembly.

[0046] In some embodiments, the bracket 2 includes a bracket body 22 and a folded edge portion 23, the folded edge portion 23 having a plurality of grooves 230; the number of limiting components 5 is plurality of, the plurality of limiting components 5 are arranged at intervals along a first direction X, and the elastic elements 50 of the plurality of limiting components 5 are respectively inserted into the grooves 230 and connected to the folded edge portion 23. (Refer to...) Figure 5 The number of groove 230 and limiting component 5 are two, and the two limiting components 5 are arranged at intervals along the first direction X, so as to more comprehensively limit and buffer the bracket 2, and further improve the structural stability of the battery pack.

[0047] In some embodiments, refer to Figure 4 The fixing member 51 has a rectangular cross-sectional shape and a through hole 510 extending along the first direction X. The rectangular cross-section of the fixing member 51 improves its structural strength and increases the contact area between it and the base plate, thereby ensuring that the limiting assembly 5 provides better support for the bracket 2. The through hole 510 extending along the first direction X in the fixing member 51 facilitates subsequent wiring and reduces its overall weight, saving material costs and achieving a lightweight battery pack.

[0048] In some embodiments, refer to Figure 3 The bracket 2 includes a bracket body 22 and a protrusion 24. The bracket body 22 surrounds the protrusion 24, and the protrusion 24 protrudes from its connection with the bracket body 22 toward a side away from the receiving cavity. The protrusion 24 passes through an opening. The bracket body 22 is connected to a side plate, and the bracket body 22 surrounds the protrusion 24 and is connected to the side plate. The bracket body 22 and the side plate have the same inclination angle, ensuring that at least a portion of the bracket body 22 can fit tightly with the side plate, thus ensuring the sealing performance between the bracket body 22 and the side plate. The protrusion 24 has multiple mounting holes 20 and multiple ports 21 for installing multiple electrical components 3 and liquid cooling pipes 4. The protrusion 24 protrudes from its connection with the bracket body 22 toward a side away from the receiving cavity, which can reduce the space occupied inside the battery pack, so that the installation positions of the electrical components 3 and liquid cooling pipes 4 will not excessively encroach on the space for placing individual batteries in the receiving cavity, thereby improving space utilization.

[0049] In some embodiments, refer to Figure 6 The bracket body 22 has multiple fixing holes 220, and the bracket body 22 is connected to the side plate by fasteners passing through the fixing holes 220. The multiple fixing holes 220 are arranged at intervals around the bracket body 22, and the bracket body 22 and the side plate are connected by fasteners passing through the fixing holes 220, thereby ensuring the stability of the connection between the bracket 2 and the side plate.

[0050] In some embodiments, the plurality of electrical components 3 include a first connector 30 and a second connector 31, which are arranged at intervals; the battery pack includes a conductive busbar 6, which is connected to at least one of the first connector 30 and the second connector 31. The first connector 30 and the second connector 31 can be low-voltage connectors or high-voltage connectors, with the high-voltage connector connected to the copper busbar. Figure 3 In the embodiment shown, the first connector 30 is a low-voltage connector, the second connector 31 is a high-voltage connector, and the second connector 31 is connected to the copper busbar.

[0051] In some embodiments, the battery pack assembly sequence is as follows: First, the liquid cooling pipe 4 is passed through port 21 and connected and fixed to the bracket 2; then, the first connector 30 and the second connector 31 are passed through the assembly hole 20 and connected and fixed to the bracket 2, and the copper busbar is locked to the second connector 31. After completing the above steps, the bracket 2 can be pre-fixed by the copper busbar and the limiting component 5, and the bracket 2 is locked to the side plate of the housing by fasteners. With this configuration, the design of the limiting component 5 gives the bracket 2 a certain degree of stability while still leaving a certain tolerance space, thereby facilitating the subsequent precise installation of the bracket 2 and the side plate, improving assembly efficiency, and ensuring the assembly quality and structural stability of the battery pack.

[0052] Accordingly, this application provides an electrical device including the aforementioned battery pack. Therefore, it can possess all the technical features and effects of the battery pack described above, which will not be repeated here. The electrical device can be a mobile phone, portable device, laptop computer, electric vehicle, electric car, ship, spacecraft, electric toy, and power tool, etc. For example, spacecraft include airplanes, rockets, space shuttles, and spacecraft; electric toys include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys; power tools include metal cutting power tools, grinding power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, etc.

[0053] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0054] The battery pack and power device provided in the embodiments of this application have been described in detail above, and 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 technical solutions and core ideas of this application. Those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A battery pack, characterized in that, include: The enclosure includes multiple side panels, one of which is provided with an opening; A bracket that covers the opening and is connected to the side plate, the bracket having multiple mounting holes and ports; Multiple electrical components are connected to the bracket through multiple mounting holes; Liquid cooling piping, which is connected to the port.

2. The battery pack according to claim 1, characterized in that, The enclosure also includes a bottom plate, which is connected to and encloses multiple side plates to form a receiving cavity; The battery pack includes a limiting component located between the bracket and the base plate and connected to both the bracket and the base plate.

3. The battery pack according to claim 2, characterized in that, The limiting component includes an elastic element, a fixing element, and a connecting element. The elastic element is connected to the bracket, the fixing element is connected to the base plate, and the connecting element is connected to both the elastic element and the fixing element.

4. The battery pack according to claim 3, characterized in that, The bracket includes a bracket body and a folded edge portion, the folded edge portion having a groove; The elastic element includes a guide portion, a first limiting portion, and a second limiting portion. The guide portion is located between the first limiting portion and the second limiting portion and is connected to the first limiting portion and the second limiting portion respectively. The guide portion passes through the groove body, and the first limiting portion and the second limiting portion clamp the folded edge portion.

5. The battery pack according to claim 3, characterized in that, The bracket includes a bracket body and a folded edge portion, the folded edge portion having multiple grooves; The number of limiting components is multiple, and the multiple limiting components are arranged at intervals along the first direction. The elastic elements of the multiple limiting components are respectively inserted into the groove and connected to the folded edge.

6. The battery pack according to claim 5, characterized in that, The fastener has a rectangular cross-sectional shape and a through hole extending along the first direction.

7. The battery pack according to claim 2, characterized in that, The bracket includes a bracket body and a protrusion. The bracket body surrounds the protrusion. The protrusion protrudes from the connection point with the bracket body toward a side away from the receiving cavity. The protrusion passes through the opening. The bracket body is connected to the side plate.

8. The battery pack according to claim 7, characterized in that, The bracket body has multiple fixing holes, and the bracket body is connected to the side plate by fasteners passing through the fixing holes.

9. The battery pack according to claim 8, characterized in that, The plurality of electrical components include a first connector and a second connector, the first connector and the second connector being arranged at intervals; The battery pack includes a conductive busbar, with the copper busbar connected to at least one of the first connector and the second connector.

10. An electrical appliance, characterized in that, The battery pack includes any one of claims 1 to 9.

Images