Chassis, battery and vehicle

Abstract

The application relates to a base, a battery and a vehicle. The base comprises a seat body for fixing a copper bar, a clamping piece comprising a hook part and a connecting part, one end of the connecting part being connected with the seat body, the other end of the connecting part away from the seat body being connected with the hook part, and the hook part extending in a direction away from the seat body. When the base is matched with a box body, the hook part is used for clamping the seat body on the box body. The clamping piece is used instead of a conventional plastic screw, on one hand, damage to the box body caused by directly fixing the seat body on the box body by using the plastic screw is avoided, and on the other hand, the fixing can be facilitated, the base is only needed to be inserted into a reserved groove on the box body, and the installation can be completed. The whole process is simple and convenient, and the installation procedure and working hours can be greatly reduced. Moreover, based on the above arrangement, after the base is inserted into the groove, the hook part is hooked at the edge of the groove, and the base is prevented from falling off, so that the stability of the base matched with the box body is improved.

Description

Technical Field

[0001] This application relates to the field of batteries, and more particularly to a base, a battery, and a vehicle. Background Technology

[0002] New energy batteries consist of cells, casings, battery management systems, thermal management systems, and safety devices, forming a complete unit. These components work together to ensure the safe, efficient, and long-term operation of the power battery in new energy vehicles. Among these, the output stage copper busbar connection of the battery module is a crucial link in ensuring stable power transmission. Traditional copper busbar fixing methods involve complex assembly processes, requiring additional plastic screws, which increases overall cost and labor time. Utility Model Content

[0003] The purpose of this application is to provide a base, a battery, and a vehicle to address some or all of the shortcomings of the related technologies.

[0004] According to a first aspect of the embodiments of this application, a base is provided, the base comprising:

[0005] The base body is used to fix the copper busbar;

[0006] A snap-fit ​​component, comprising a hook and a connecting portion, wherein one end of the connecting portion is connected to the base body, and the end of the connecting portion facing away from the base body is connected to the hook, and the hook extends in a direction away from the base body.

[0007] When the base is engaged with the housing, the hook is used to secure the base body onto the housing.

[0008] The above design uses snap-fit ​​connectors instead of traditional plastic screws. This avoids the damage to the enclosure that would occur if the base were directly fixed to the enclosure with plastic screws. It also simplifies installation; simply insert the base into the pre-drilled groove on the enclosure. The entire process is simple and convenient, greatly reducing installation steps and time. Furthermore, based on this design, after the base is inserted into the groove, the hook engages with the edge of the groove, preventing the base from falling off and increasing the stability of the fit between the base and the enclosure.

[0009] In some alternative embodiments, the hook portion includes a first hook end and a second hook end, the second hook end being connected to the connecting portion, the first hook end being disposed away from the connecting portion, and the hook portion gradually increasing in size along the direction from the first hook end to the second hook end.

[0010] That is, the hook gradually increases in size from bottom to top, forming an inverted triangle shape. This design allows the smaller part to enter the groove first, facilitating the overall entry of the base. Then, due to the slope of the inverted triangle, a certain amount of pressure is applied towards the base body, pressing the connecting part and the hook inward, allowing the entire base to smoothly enter the groove. At this point, the inverted triangle hooks onto the edge of the groove, making it difficult for the base to detach, thus increasing the stability of the fit between the base and the housing.

[0011] In some alternative embodiments, the latching member may be located in a first position and a second position. The latching member may move from the first position to the second position under pressure. When the latching member is located in the first position, there is a spring-back space between the outer wall of the seat body and the latching member. When the latching member is located in the second position, the latching member is located within the spring-back space.

[0012] The first position described above represents the base in its normal state or after installation. The second position is formed by the inverted triangular slope, which, under pressure, compresses the connecting part and hook inwards. A spring-loaded space is provided here to allow for sufficient internal compression of the connecting part and hook, enabling them to smoothly rotate into the second position. This ensures the base can be successfully installed into the groove.

[0013] In some alternative embodiments, the outer wall of the seat body and the snap-fit ​​member are set at an angle, wherein the angle is greater than or equal to 10° and less than or equal to 45°.

[0014] Within this range, on the one hand, the springback space is not too small, which would prevent the snap-fit ​​component from being moved to the corresponding springback space, and also allow the base to be smoothly inserted into the groove on the cabinet. On the other hand, it will not occupy too much space, thus ensuring the installation space for the copper busbar.

[0015] In some alternative embodiments, the base body is provided with a fixing hole, the base includes a fixing member, the fixing hole includes at least two hole units and the hole units are spaced apart, the fixing member includes at least two fixing units and the fixing units are configured to cooperate with the hole units.

[0016] Based on the above configuration, the presence of multiple hole units and multiple fixing units provides greater clamping force, resulting in a more stable fixation of the copper busbar. Furthermore, the spacing between the hole units prevents rotation of the copper busbar, thus increasing its stability.

[0017] In some alternative embodiments, the fixing unit includes a top subunit and a connecting subunit connected to each other. The cross-section of the top subunit is larger than that of the connecting subunit. The connecting subunit passes through the copper busbar and extends into the hole unit. The copper busbar is fixed between the base body and the top subunit.

[0018] With this configuration, the connection to the base body can be achieved through the connecting sub-unit, and the copper busbar can be pressed onto the base body through the top sub-unit, thereby effectively fixing the copper busbar and preventing the fixing unit from loosening.

[0019] In some alternative embodiments, the base further includes a cover that covers the surface of the base body having a fixing hole and forms an installation space with the base body, and the copper busbar is disposed within the installation space.

[0020] The aforementioned installation space effectively prevents external debris from contacting the copper busbar and also prevents operators from directly touching it, thus ensuring overall safety. Furthermore, the cover obstructs the copper busbar, forcing current from the busbar to travel along the cover, increasing the creepage distance and preventing leakage.

[0021] In some alternative embodiments, the seat body includes a first side and a second side disposed opposite to each other;

[0022] The first side portion is larger than the second side portion, or the first side portion is smaller than the second side portion.

[0023] The first side portion is larger than the second side portion, or the first side portion is smaller than the second side portion. That is, the first side portion and the second side portion are different sizes. The first side portion and the second side portion can be any one of the front, back, left, or right sides, as long as there is a difference in size, it is within the scope of this application. Because of the difference in size, if the seat body cannot be correctly aligned when matching with the groove, it is difficult to install directly, thereby preventing the installer from making mistakes during the installation process. In other words, it achieves the function of foolproof installation.

[0024] According to a second aspect of the embodiments of this application, a battery is provided, comprising:

[0025] Box;

[0026] The base as described in any of the above embodiments is disposed on the housing.

[0027] According to a third aspect of the embodiments of this application, a vehicle is provided, including a battery as described in the above embodiments.

[0028] The beneficial technical effects of the technical solutions provided in this application are:

[0029] The system consists of a base body and a snap-fit ​​connector. The base body is used to secure the copper busbar. The snap-fit ​​connector includes a hook and a connecting part. One end of the connecting part is connected to the base body, and the end of the connecting part away from the base body is connected to the hook. The hook extends in the direction away from the base body. When the base is fitted with a housing, the hook is used to snap the base body onto the housing.

[0030] The above design uses snap-fit ​​connectors instead of traditional plastic screws. This avoids the damage to the enclosure that would occur if the base were directly fixed to the enclosure with plastic screws. It also simplifies installation; simply insert the base into the pre-drilled groove on the enclosure. The entire process is simple and convenient, greatly reducing installation steps and time. Furthermore, based on this design, after the base is inserted into the groove, the hook engages with the edge of the groove, preventing the base from falling off and increasing the stability of the fit between the base and the enclosure.

[0031] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this application. Attached Figure Description

[0032] 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.

[0033] Figure 1 This is a schematic diagram of the structure of a base according to an embodiment of this application.

[0034] Figure 2 This is a structural schematic diagram of the base from another angle according to an embodiment of this application.

[0035] Figure 3 This is a cross-sectional schematic diagram of a base according to an embodiment of this application.

[0036] Figure 4 This is a structural schematic diagram of the base at another angle according to an embodiment of this application.

[0037] Figure 5 This is a schematic diagram of the structure of a base with the cover removed according to an embodiment of this application.

[0038] Explanation of reference numerals in the attached figures

[0039] Base 10

[0040] Base body 100

[0041] Fixing hole 110

[0042] Hole unit 111

[0043] Fastener 200

[0044] Fixed unit 210

[0045] Top subunit 211

[0046] Connecting subunit 212

[0047] Card connector 300

[0048] Hook 310

[0049] First hook 311

[0050] Second hook end 312

[0051] Connecting part 320

[0052] 400 rebound space

[0053] Cover 500

[0054] Installation space 510 Detailed Implementation

[0055] The technical solutions in the embodiments (or "implementations") of this application will be clearly and completely described herein with reference to the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0056] If the embodiments of this application contain terms relating to directional indications or positional relationships (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationships and movements between components in a specific posture (as shown in the attached figures); if the specific posture changes, the directional indications or positional relationships will also change accordingly. Furthermore, the terms "first" and "second" used in the embodiments of this application are only for descriptive convenience and should not be construed as indicating or implying relative importance.

[0057] New energy batteries include cells, housings, battery management systems, thermal management systems, and safety devices, and these components form a complete unit.

[0058] The battery cell is the most basic electrochemical energy storage unit in a battery system. It consists of a positive electrode, a negative electrode, a separator, an electrolyte, and a casing. The casing is the external structural framework and outer shell of the battery system, typically made of high-strength metal or composite materials. It provides robust physical protection for the internal cells, modules, and electrical components, resisting external forces such as collisions, compression, and vibration, ensuring the structural safety of the battery during vehicle operation. The battery management system (BMS) is an electronic control system composed of a master control unit (BCU), slave control units (BMU, used to collect cell data), and related circuits. It features real-time monitoring, state estimation, battery equalization, safety protection, and communication functions. The thermal management system is a system used to regulate battery temperature, mainly divided into air-cooled and liquid-cooled types. Safety devices are a series of physical or electronic devices specifically designed to ensure the safety of personnel and vehicles in extreme conditions. Examples include pressure relief valves, explosion-proof valves, emergency power-off switches, and fuses.

[0059] All of the above components work together to ensure the safe, efficient, and long-term operation of the power battery in new energy vehicles. Among them, the output stage copper busbar connection of the battery module is a key link in ensuring stable power transmission. Traditional copper busbar fixing methods involve complex assembly processes, requiring the additional installation of plastic screws, which increases the overall cost and labor time.

[0060] In this application, references Figures 1-5 As shown, a base 10 is proposed, comprising a base body 100 and a snap-fit ​​member 300. The base body 100 is used to fix copper busbars, and the snap-fit ​​member 300 includes a hook portion 310 and a connecting portion 320. One end of the connecting portion 320 is connected to the base body 100, and the end of the connecting portion 320 away from the base body 100 is connected to the hook portion 310, with the hook portion 310 extending in a direction away from the base body 100. When the base 10 is engaged with a housing, the hook portion 310 is used to snap the base body 100 onto the housing.

[0061] It should be noted that screws can be used here, and fixing hole 110 can be a screw hole. The two work together to fix the copper busbar.

[0062] The above design uses snap-fit ​​connectors 300 instead of traditional plastic screws. This avoids damage to the housing caused by directly fixing the base body 100 to the housing with plastic screws. Furthermore, it simplifies installation; simply insert the base 10 into the pre-drilled groove on the housing to complete the installation. The entire process is simple and convenient, greatly reducing installation steps and time.

[0063] Furthermore, based on the above configuration, after the base 10 is inserted into the groove, the hook 310 hooks onto the edge of the groove, thereby preventing the base 10 from falling off and increasing the stability of the fit between the base 10 and the housing.

[0064] In one embodiment, reference Figures 1-5 As shown, the hook portion 310 includes a first hook end 311 and a second hook end 312. The second hook end 312 is connected to the connecting portion 320. The first hook end 311 is disposed away from the connecting portion 320. The hook portion 310 is gradually increased in size along the direction from the first hook end 311 to the second hook end 312.

[0065] That is, the hook portion 310 is designed to gradually increase in size from bottom to top, forming an inverted triangle shape. This design allows the smaller portion to enter the groove first, facilitating the overall entry of the base 10. Then, due to the slope of the inverted triangle, a certain amount of pressure is applied towards the base body 100, pressing the connecting portion 320 and the hook portion 310 inwards, thus allowing the base 10 to smoothly enter the groove. At this point, the inverted triangle hooks onto the edge of the groove, making it difficult for the base 10 to detach, thereby increasing the stability of the fit between the base 10 and the housing.

[0066] In one embodiment, reference Figures 1-5 As shown, the snap-fit ​​connector 300 can be located in a first position and a second position. Figures 1-5 The position of the middle locking component 300 is the first position. The locking component 300 can move from the first position to the second position under pressure. When the locking component 300 is in the first position, there is a spring space 400 between the outer wall of the seat body 100 and the locking component 300. When the locking component 300 is in the second position, the locking component 300 is located within the spring space 400.

[0067] The first position described above is the normal state of the base 10 or its state after installation. The second position is formed by the inverted triangular slope pressing the connecting part 320 and the hook part 310 together inward under pressure.

[0068] A springback space 400 is provided here, which allows the connecting part 320 and the hook part 310 to have a certain amount of space to accommodate the overall internal pressure, so that the connecting part 320 and the hook part 310 can be smoothly rotated into the second position. This ensures that the base 10 can be smoothly installed into the groove.

[0069] When the angle α1 between the outer wall of the base body 100 and the snap-fit ​​component 300 is too small, the springback space 400 will be too small, preventing the snap-fit ​​component 300 from moving into the corresponding springback space 400, and consequently preventing the base 10 from fitting into the groove on the housing. When the angle α1 between the outer wall of the base body 100 and the snap-fit ​​component 300 is too large, the springback space 400 will be too large, resulting in the springback space 400 occupying too much space. This, in turn, encroaches on the space for installing the copper busbar.

[0070] In this embodiment, the outer wall of the base body 100 and the snap-fit ​​member 300 are set at an angle, and the angle α1 is greater than or equal to 10° and less than or equal to 45°. Within this range, on the one hand, the snap-fit ​​member 300 will not be able to move to the corresponding spring-loaded space 400 due to the spring-loaded space 400 being too small, and the base 10 can be smoothly inserted into the groove on the housing. On the other hand, it will not occupy too much space, thus ensuring the installation space for the copper busbar. For example, the angle α1 can be 10°, 15°, 20°, 25°, 30°, 35°, 40°, or 45°.

[0071] In one embodiment, the base body 100 is provided with a fixing hole 110, and the base 10 includes a fixing member (not shown in the figure). The fixing member can be installed in the fixing hole 110 and is used to fix the copper busbar. The fixing hole 110 includes at least two hole units 111, and the hole units 111 are spaced apart. The fixing member includes at least two fixing units, and the fixing units are configured to cooperate with the hole units 111.

[0072] Based on the above configuration, the presence of multiple hole units 111 and multiple fixing units provides greater clamping force, thus ensuring more stable fixation of the copper busbar. Furthermore, when the copper busbar rotates, the spaced holes 111 prevent rotation, thereby increasing its stability.

[0073] In one embodiment, the fixing unit includes a top sub-unit (not shown) and a connecting sub-unit (not shown) connected to each other. The cross-section of the top sub-unit is larger than that of the connecting sub-unit. The connecting sub-unit passes through the copper busbar and extends into the hole unit 111. The copper busbar is fixed between the base body 100 and the top sub-unit.

[0074] With this configuration, the connection to the base body 100 can be achieved through the connecting sub-unit, and the copper busbar can be pressed onto the base body 100 through the top sub-unit, thereby effectively fixing the copper busbar and preventing the fixing unit from loosening.

[0075] In one embodiment, reference Figures 1-5 As shown, the base 10 also includes a cover 500, which covers the surface of the base body 100 having the fixing hole 110 and forms an installation space 510 with the base body 100. The copper busbar is disposed in the installation space 510.

[0076] The aforementioned installation space 510 effectively prevents external debris from contacting the copper busbar and also prevents operators from directly touching it, thus ensuring overall safety. Furthermore, the cover 500 covers the copper busbar, causing current flowing from it to travel along the cover 500, thereby increasing the creepage distance and preventing leakage.

[0077] In one embodiment, reference Figures 1-5 As shown, the seat body 100 includes a first side portion and a second side portion disposed opposite to each other. The first side portion is larger than the second side portion, or the first side portion is smaller than the second side portion. It should be noted that the size of the recessed area in this case is similar to that of the seat body 100.

[0078] The first side portion is larger than the second side portion, or the first side portion is smaller than the second side portion. That is, the first side portion and the second side portion are different in size. The first side portion and the second side portion can be any one of the front, back, left, or right sides, as long as they are different in size, they are within the scope of this application.

[0079] Because of the different sizes, if the base body 100 is not correctly aligned when matching the groove, it will be difficult to install directly, thus preventing the installer from making mistakes during the installation process. In other words, it achieves the function of foolproof installation.

[0080] This application also proposes a battery including a housing and a base 10 disposed on the housing.

[0081] This application also proposes a vehicle comprising the battery described in any of the foregoing embodiments. The vehicle can be a passenger car, truck, van, SUV, or any other type of vehicle equipped with a battery. In one embodiment, the vehicle is a high-voltage traction battery-powered electric vehicle (e.g., a battery electric vehicle (BEV), a hybrid electric vehicle (HEV), a plug-in hybrid electric vehicle (PHEV), etc.). In another embodiment, the vehicle is an autonomous vehicle, wherein the vehicle's motor functions are controlled without direct input from a human driver.

[0082] It should be noted that the technical solutions or features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the accompanying drawings; all modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A base, characterized in that, The base includes: The base body is used to fix the copper busbar; A snap-fit ​​component, comprising a hook and a connecting portion, wherein one end of the connecting portion is connected to the base body, and the end of the connecting portion facing away from the base body is connected to the hook, and the hook extends in a direction away from the base body. When the base is engaged with the housing, the hook is used to secure the base body onto the housing.

2. The base as described in claim 1, characterized in that, The hook portion includes a first hook end and a second hook end, the second hook end being connected to the connecting portion, the first hook end being disposed away from the connecting portion, and the hook portion gradually increasing in size along the direction from the first hook end to the second hook end.

3. The base as described in claim 1, characterized in that, The latching member can be located in a first position and a second position. The latching member can move from the first position to the second position under pressure. When the latching member is located in the first position, there is a spring-back space between the outer wall of the seat body and the latching member. When the latching member is located in the second position, the latching member is located within the spring-back space.

4. The base as described in claim 3, characterized in that, The outer wall of the seat body and the snap-fit ​​component are set at an angle, and the angle is greater than or equal to 10° and less than or equal to 45°.

5. The base as described in claim 1, characterized in that, The base body is provided with fixing holes, the base includes a fixing member, the fixing hole includes at least two hole units, and the hole units are spaced apart, the fixing member includes at least two fixing units, and the fixing units are configured to cooperate with the hole units.

6. The base as described in claim 5, characterized in that, The fixing unit includes a top sub-unit and a connecting sub-unit that are connected to each other. The cross-section of the top sub-unit is larger than that of the connecting sub-unit. The connecting sub-unit passes through the copper busbar and extends into the hole unit. The copper busbar is fixed between the base body and the top sub-unit.

7. The base as described in claim 1, characterized in that, The base also includes a cover, which covers the surface of the base body with fixing holes and forms an installation space with the base body, and the copper busbar is disposed in the installation space.

8. The base as described in claim 1, characterized in that, The seat body includes a first side and a second side disposed opposite to each other; The first side portion is larger than the second side portion, or the first side portion is smaller than the second side portion.

9. A battery, characterized in that, include: Box; The base as described in any one of claims 1-8, wherein the base is disposed on the housing.

10. A vehicle, characterized in that, Includes the battery as described in claim 9.

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