Battery box and battery pack

Abstract

The application discloses a battery box and a battery pack. The battery box comprises a box body comprising at least one edge beam structure, wherein a sliding groove is arranged on the edge beam structure along a first direction; a lifting lug assembly comprises a lifting lug body and a bushing connecting structure; the lifting lug body is slidingly installed in the sliding groove and is adjustable in position along the first direction; a waist-shaped hole is arranged on the lifting lug body along a second direction, and the bushing connecting structure is installed in the waist-shaped hole and is adjustable in position along the second direction; the bushing connecting structure has a connecting hole arranged along a third direction for mounting a whole vehicle connecting piece, and the length of the bushing connecting structure is adjustable in the third direction, wherein the first direction is the length direction of the box body, the third direction is the height direction of the box body, and the second direction intersects the first direction. Through the application, the technical problem of how to meet the quick mounting requirements of different vehicle models is solved.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a battery box and battery pack. Background Technology

[0002] In recent years, the new energy vehicle industry has developed rapidly. As the power source for new energy vehicles, the performance of the power battery directly affects the assembly process and user experience of the vehicles. During installation, the mounting points on the power battery must be connected one-to-one with the mounting points on the vehicle body.

[0003] With the increasing popularity of developing different vehicle models, existing solutions can only re-mold and manufacture new housings and redesign the hanging point positions on the housings to adapt to the different installation points of the vehicle when power batteries are installed in different models. This results in low compatibility of power battery installation and cannot meet the needs of rapid installation in different vehicle models. Utility Model Content

[0004] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a battery box and battery pack to solve the technical problem of how to meet the rapid installation requirements of different vehicle models.

[0005] In a first aspect, this application provides a battery box, comprising: The box body includes at least one side beam structure, and the side beam structure is provided with a sliding groove along a first direction; A lifting lug assembly, comprising a lifting lug body and a bushing connection structure; the lifting lug body is slidably installed in the slide groove and its position is adjustable along the first direction; The main body of the lifting lug is provided with a waist-shaped hole along the second direction, and the bushing connection structure is installed in the waist-shaped hole and its position is adjustable along the second direction; the bushing connection structure has a connection hole for installing the vehicle connector provided along the third direction, and the length of the bushing connection structure is adjustable in the third direction, wherein the first direction is the length direction of the box body, the third direction is the height direction of the box body, and the second direction intersects with the first direction.

[0006] In at least some embodiments of this application, The bushing connection structure includes a bushing shaft and a bushing. The bushing shaft passes through the oblong hole along the third direction. The bushing is installed at one end of the bushing shaft. The connecting hole passes through the bushing shaft and the bushing. The bushing shaft is adapted to bushings of different lengths in a third direction.

[0007] In at least some embodiments of this application, The waist-shaped hole has a stepped hole extending outward at the third-party upward end; The bushing shaft has a boss structure extending outward from the bushing at one end away from the bushing. The boss structure is disposed in the stepped hole and cooperates with the stepped hole to prevent rotation.

[0008] In at least some embodiments of this application, The outer diameter of the bushing shaft is less than or equal to the width of the oblong hole in the first direction; The boss structure has a straight section extending along the second direction on both sides in the first direction, and the distance between the straight sections is equal to the width of the stepped hole in the first direction.

[0009] In at least some embodiments of this application, The boss structure is waist-shaped, and the semicircular diameter of the boss structure is equal to the semicircular diameter of the stepped hole.

[0010] In at least some embodiments of this application, The lifting lug body includes a sliding mounting part and a bushing mounting part extending along the second direction; the sliding mounting part is slidably mounted in the slide groove and its position is adjustable along the first direction. The bushing mounting portion is disposed on the sliding mounting portion, and the waist-shaped hole is disposed on the bushing mounting portion.

[0011] In at least some embodiments of this application, The slide groove is provided with a first through hole in the first direction; the sliding mounting part is provided with a second through hole corresponding to the first through hole; the sliding mounting part is fixed in the slide groove by a fastener passing through the mutually cooperating first through hole and second through hole.

[0012] In at least some embodiments of this application, The corner where the sliding mounting part contacts the sliding groove is chamfered.

[0013] In at least some embodiments of this application, The enclosure includes a base plate and a frame, the frame being arranged along the second direction, and the side beam structure being arranged along the first direction; the base plate, the frame, and the side beam structure together enclose the enclosure.

[0014] In a second aspect, this application provides a battery pack, including a battery box and battery cells as described in any one of the first aspects; a plurality of said battery cells are stacked along a first direction and a second direction to form a battery module disposed in said box.

[0015] The above-described one or more embodiments of this application have at least one or more of the following beneficial effects: This application achieves positional adjustment of the lifting lug assembly along the length of the battery box by setting a sliding groove on the side beam structure, thereby driving the bushing connection structure used to connect the vehicle's connecting parts to adjust its position in the corresponding direction. Furthermore, by setting a slotted hole on the lifting lug assembly, the positional adjustment of the bushing connection structure in the direction intersecting the length of the battery box is achieved. Adjustment in the height of the battery box is also achieved through the bushing connection structure itself. The entire battery box, through the combination of the side beams and the lifting lug structure, can achieve positional adjustment in different directions, thus meeting the installation requirements of different vehicle models and installation points. This improves the battery box's installation adaptability, shortens the battery box manufacturing cycle, and saves development costs and mold investment. Simultaneously, the lifting lug assembly is easy to replace and disassemble, facilitating after-sales maintenance.

[0016] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0017] The disclosure of this application will become more readily understood with reference to the accompanying drawings. It will be readily understood by those skilled in the art that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of this application. Furthermore, similar numbers in the drawings are used to denote similar components, wherein: Figure 1 This is a schematic diagram of the overall structure of the battery box according to one embodiment of this application; Figure 2 This is a schematic diagram of the overall installation structure of the side beam structure and the lifting lug assembly according to one embodiment of this application; Figure 3 This is a structural schematic diagram of the lug body according to one embodiment of this application; Figure 4 This is a structural schematic diagram of the side beam structure according to one embodiment of this application; Figure 5 This is an exploded structural diagram of a bushing connection structure according to one embodiment of this application; Figure 6 This is a structural schematic diagram of the lug body from another perspective according to one embodiment of this application; Figure 7 This is a schematic diagram of the installation of the lug body and the bushing connection structure according to one embodiment of this application.

[0018] The markings in the diagram are: 100, box body; 101, side beam structure; 102, slide groove; 103, first through hole; 104, bottom plate; 105, frame; 200. Lifting lug assembly; 201. Lifting lug body; 2011. Waist-shaped hole; 2012. Stepped hole; 2013. Sliding mounting part; 2014. Bushing mounting part; 2015. Second through hole; 300, Bushing connection structure; 301, Bushing shaft; 3011, Connecting hole; 3012, Boss structure; 302, Bushing; 400, Fastener. Detailed Implementation

[0019] Some embodiments of this application are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of this application and are not intended to limit the scope of protection of this application.

[0020] As described in the background section, the current battery box mounting lug positions cannot meet the installation requirements of different vehicle models, necessitating the production of different battery boxes for each model. However, manufacturing new battery boxes increases production time and development costs, failing to meet the demand for rapid and cost-effective production. Therefore, this application proposes a battery box with adjustable and quickly replaceable mounting lug components to meet the assembly requirements of different vehicle models, thereby improving production efficiency and saving production costs.

[0021] See appendix Figure 1 and Figure 2 In one or more embodiments, a battery box according to this application includes a box body 100 and a lifting lug assembly 200; the box body 100 includes at least one side beam structure 101, and a sliding groove 102 is provided on the side beam structure 101 along a first direction (X direction in the figure); the lifting lug assembly 200 includes a lifting lug body 201 and a bushing connection structure 300; the lifting lug body 201 is slidably installed in the sliding groove 102 and its position is adjustable along the first direction; The main body 201 of the lifting lug has a waist-shaped hole 2011 along the second direction (Y direction in the figure). The bushing connection structure 300 is installed in the waist-shaped hole 2011 and its position is adjustable along the second direction. The bushing connection structure 300 has a connection hole for installing the vehicle connector along the third direction (Z direction in the figure). The length of the bushing connection structure 300 in the third direction is adjustable. Figure 1 and Figure 2 It can be seen that the first direction is the length direction of the box 100, the third direction is the height direction of the box 100, and the second direction intersects with the first direction.

[0022] The mounting points between the box body 100 and the vehicle assembly inevitably have certain dimensional tolerances and assembly errors during manufacturing and welding. Based on the above implementation method, refer to... Figure 1 and Figure 2One possible usage process of a battery box according to this application is as follows: Position A of the box body 100 corresponding to the vehicle mounting point in a first direction is determined, and the lifting lug body 201 within the slide groove 102 is fixed at position A; Position B of the lifting lug body 201 corresponding to the vehicle mounting point in a second direction is determined, and the position of the bushing connection structure 300 within the oblong hole 2011 is adjusted so that the bushing connection structure 300 is at position B and fixed; The distance between the bushing connection structure 300 and the vehicle mounting point in a third direction is determined, and bushing connection structures 300 of different lengths are selected based on this distance to adapt the bushing connection structure 300 to the vehicle mounting point in the third direction. Through adjustments in three directions, dimensional tolerances and assembly tolerances are absorbed and compensated, making the entire battery box fully suitable for installation at different vehicle mounting points, avoiding forced installation, stress concentration, or installation failure due to dimensional deviations. Furthermore, by adjusting the position of the lifting lug assembly 200, the same box body can meet the installation requirements of different vehicle models, increasing the flexibility of box body and vehicle installation.

[0023] In the embodiments of this application, by providing a sliding groove 102 on the side beam structure 101, the position of the lifting lug assembly 200 in the length direction of the housing 100 can be adjusted, thereby driving the bushing connection structure 300 used to connect the vehicle connecting parts to adjust its position in the corresponding direction; by providing a waist-shaped hole 2011 on the lifting lug assembly 200, the position of the bushing connection structure 300 in another direction intersecting with the length direction of the housing 100 can be adjusted; the bushing connection structure 300 itself can be adjusted in the height direction of the housing 100; the entire housing 100 can be adjusted in different directions through the combination of the side beam and the setting of the lifting lug structure, thereby meeting the corresponding installation of different models and different installation points. Due to the degree of adjustment freedom, when installing the housing 100, it is not necessary for the lifting lug assembly 200 and the vehicle body hanging point to achieve extremely high positional accuracy. Operators can first roughly position the battery box 100, and then adjust the position of the lifting lug body 201 in the slide groove 102 and the position of the bushing connection structure 300 in the oblong hole 2011 to achieve installation. This improves the battery box's installation adaptability, simplifies the assembly process, increases assembly efficiency, and reduces assembly difficulty and error rate. It also shortens the battery box manufacturing cycle, saving development costs and mold investment. Furthermore, when the battery box 100 needs to be disassembled for maintenance or replacement, the design of the side beam structure 101 and the lifting lug assembly 200 makes disassembly smoother, facilitating replacement and disassembly, and simplifying after-sales maintenance.

[0024] In one embodiment, reference Figure 1The housing 100 also includes a base plate 104 and a frame 105. The frame 105 is arranged along a second direction, and the side beam structure 101 is arranged along a first direction. The base plate 104, frame 105, and side beam structure 101 together enclose the housing 100. From the structure of the housing 100, it can be understood that the side beam structure 101 is arranged along the length of the housing 100, and the sliding groove 102 on the side beam structure 101 extends along the length of the housing 100 and is through-connected at both ends. The lifting lug body 201 can move within the sliding groove 102 to adjust its position along the length of the housing 100. The through-connected sliding groove 102 makes it easy to install and remove the lifting lug assembly from the side beam structure 101. Furthermore, the side beam structure 101 can also be arranged along the width of the housing, and the sliding groove 102 can be blocked at one end and open at the other. This embodiment is not limited to this.

[0025] Among them, the side beam structure 101 can be an aluminum profile structure, and the material can be aluminum alloy or other equivalent materials to ensure the rigidity of the box body.

[0026] In one embodiment, reference Figures 1-3 The lifting lug body 201 includes a sliding mounting portion 2013 and a bushing mounting portion 2014 extending along a second direction. The sliding mounting portion 2013 is slidably mounted in the slide groove 102 and its position is adjustable along a first direction, thereby driving the entire lifting lug body 201 to adjust its position in the first direction. The bushing mounting portion 2014 is disposed on the sliding mounting portion 2013, and a waist-shaped hole 2011 is disposed on the bushing mounting portion 2014. The waist-shaped hole 2011 is used to install the bushing connecting structure 300, which enables connection with the vehicle. Since the waist-shaped hole 2011 has a certain length in the second direction, the bushing connecting structure 300 can be adjusted in position along the second direction within the waist-shaped hole 2011. Therefore, by fixing the bushing connecting structure 300 at different positions in the waist-shaped hole 2011, the position matching with the vehicle mounting point in the second direction can be achieved.

[0027] In one possible implementation, refer to Figures 1-4The slide groove 102 has a first through hole 103 in the first direction; the sliding mounting part 2013 has a second through hole 2015 corresponding to the first through hole 103; the sliding mounting part 2013 is fixed in the slide groove 102 by a fastener 400 passing through the mutually cooperating first through hole 103 and second through hole 2015, so as to achieve the overall fixation of the lifting lug assembly 200 in the slide groove 102. It should be understood that the setting of the first through hole 103 can be determined according to the actual vehicle installation position where the battery box needs to be installed. That is, by moving the lifting lug assembly 200 along the direction of the slide groove 102, the first through hole 103 is designed at the required installation position to meet the needs of different hanging point positions of the vehicle. There can also be multiple first through holes 103, arranged at different positions in the first direction of the slide groove 102. When installing the battery box with the vehicle, the first through hole 103 corresponding to the vehicle installation point position is selected, the lifting lug assembly 200 is slid to the position of the corresponding first through hole 103, and then fixed by the fastener 400.

[0028] The first through hole 103 and the second through hole 2015 are bolt holes, and the fastener 400 can be a bolt that matches the first through hole 103 and the second through hole 2015. The fastener 400 can also be other connection structures with a fixing function, and this application does not impose specific limitations on them.

[0029] The sliding mounting part 2013 and the bushing mounting part 2014 are either integral aluminum profile structures or separately formed, and can be assembled and installed by welding, snap-fitting, plugging, etc. This application does not impose specific restrictions on this.

[0030] In one possible implementation, the corner where the sliding mounting part 2013 contacts the slide groove 102 is chamfered. This facilitates the movement of the sliding mounting part 2013 within the slide groove 102, reduces friction, guides the sliding mounting part 2013 more smoothly into the correct position in the slide groove 102, and reduces the possibility of hard scraping or jamming with the edge of the groove wall during movement. Simultaneously, it facilitates manufacturing, simplifies assembly operations, and improves the efficiency of installation and subsequent maintenance.

[0031] In one embodiment, reference Figures 1-5 The bushing connection structure 300 includes a bushing shaft 301 and a bushing 302. The bushing shaft 301 passes through the oblong hole 2011 along the third direction (Z direction in the figure). The bushing 302 is installed at one end of the bushing shaft 301. The connecting hole 3011 passes through the bushing shaft 301 and the bushing 302. The connecting hole 3011 is used for connection and installation with the vehicle mounting point. The bushing shaft 301 is adapted to bushings 302 of different lengths in the third direction. It can be understood that the bushing shaft 301 can be installed on bushings 302 of different heights to achieve adjustment of the installation point in the third direction, that is, to match the vehicle mounting point in the third direction.

[0032] In one possible implementation, refer to Figures 5-7 The waist-shaped hole 2011 has a stepped hole 2012 extending outward at one end in the third direction; the bushing shaft 301 has a boss structure 3012 extending outward at one end away from the bushing 302. The boss structure 3012 is disposed in the stepped hole 2012 and cooperates with the stepped hole 2012 to prevent rotation. That is to say, while the bushing shaft 301 can be adjusted and moved in the second direction in the waist-shaped hole 2011, it can prevent the entire bushing connection structure 300 from rotating in the first direction by cooperating with the boss structure 3012 of the bushing 302 through the stepped hole 2012.

[0033] Specifically, in order to enable the bushing shaft 301 to move in the second direction within the waist-shaped hole 2011, the outer diameter of the bushing shaft 301 is less than or equal to the width of the waist-shaped hole 2011 in the first direction, thereby allowing the bushing shaft 301 to move along the two sides of the waist of the waist-shaped hole 2011.

[0034] Specifically, the boss structure 3012 has straight sections extending along the second direction on both sides in the first direction. That is, the boss structure 3012 has straight ends on both sides in the width direction that are consistent with the waist direction of the waist-shaped hole 2011, and the distance between the straight sections is equal to the width of the stepped hole 2012 in the first direction. It can be understood that the bushing shaft 301 and the boss structure 3012 form a T-shaped structure. The width of the boss structure 3012 is equal to the width of the stepped hole 2012, and the two sides of the boss structure 3012 in the width direction are straight, so that the boss structure 3012 cannot rotate in the stepped hole 2012, thereby preventing the bushing shaft 301 connected to the boss structure 3012 from rotating and maintaining stability. Furthermore, the boss structure 3012 is waist-shaped, and the stepped hole 2012 is also a waist-shaped groove extending outward from the waist-shaped hole 2011. The semi-circular diameters at both ends of the boss structure 3012 are equal to the semi-circular diameters of the stepped hole 2012. It can be understood that the two ends of the boss structure 3012 and the two ends of the stepped hole 2012 are completely fitted, so that the bushing shaft 301 connected to the boss structure 3012 can have a relatively large range of movement within the waist-shaped hole 2011 and can ensure that the bushing shaft 301 does not rotate during connection and installation.

[0035] The bushing shaft 301 and the boss structure 3012 can be integral aluminum alloy structures. The bushing 302 can be a rubber bushing that is matched and connected to one end of the bushing shaft 301.

[0036] Based on the above implementation methods, refer to Figures 1-7Another possible usage process of a battery box according to this application: Position A of the box body 100, corresponding to the vehicle's mounting point in a first direction, is determined. The lifting lug body 201 moves to position A within the slide groove 102 via the sliding mounting part 2013, aligning the second through hole 2015 with the first through hole 103 at position A. A fixing member 400 passes through the first through hole 103 and the second through hole 2015 at position A, fixing the entire lifting lug body 201 to the side beam structure 101. Position B of the lifting lug body 201, corresponding to the vehicle's mounting point in a second direction, is determined. The bushing shaft 301 passes through the oblong hole 2011, aligning its boss structure 3012 with the step. Inside hole 2012, adjust the position of bushing shaft 301 in waist-shaped hole 2011 to position B. Then, fix bushing shaft 301 in position B by installing bushing 302 on the end of bushing shaft 301 away from boss structure 3012. Observe the distance between bushing 302 and the vehicle mounting point in the height direction at this time, and select a bushing 302 with a height matching the distance to replace it, so that bushing 302 adapts to the vehicle mounting point in the third direction. By adjusting in three directions, the entire battery box can be fully adapted to the installation of different vehicle mounting points. That is, by adjusting the position of the lifting lug assembly 200, the same box can meet the installation of different models.

[0037] Furthermore, refer to Figures 1-7 This application proposes a battery pack, including a battery box and battery cells as described above; multiple battery cells are stacked along a first direction and a second direction to form a battery module disposed in the box 100. The first direction is the length direction of the box 100, and the second direction may be the width direction of the box 100.

[0038] It needs to be understood that, although Figure 1 The diagram only shows the structure of the battery box, but the battery pack also includes other components not shown in the diagram, such as battery modules, other electrical components of the battery (BMS and BDU), and various connecting devices.

[0039] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0040] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0041] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A battery box characterized by, include: The box body (100) includes at least one side beam structure (101), and the side beam structure (101) is provided with a sliding groove (102) along a first direction. A lifting lug assembly (200) includes a lifting lug body (201) and a bushing connection structure (300); the lifting lug body (201) is slidably installed in the slide groove (102) and its position is adjustable along the first direction; The main body (201) of the lifting lug is provided with a waist-shaped hole (2011) along the second direction. The bushing connection structure (300) is installed in the waist-shaped hole (2011) and its position is adjustable along the second direction. The bushing connection structure (300) has a connection hole (3011) for installing the vehicle connector along the third direction. The bushing connection structure (300) is adjustable in length along the third direction. The first direction is the length direction of the box (100), the third direction is the height direction of the box (100), and the second direction intersects with the first direction.

2. The battery box according to claim 1, characterized in that, The bushing connection structure (300) includes a bushing shaft (301) and a bushing (302). The bushing shaft (301) passes through the waist-shaped hole (2011) along the third direction. The bushing (302) is installed at one end of the bushing shaft (301). The connecting hole (3011) passes through the bushing shaft (301) and the bushing (302). The bushing shaft (301) is adapted to bushings (302) of different lengths in a third direction.

3. The battery pack of claim 2, wherein, The waist-shaped hole (2011) has a stepped hole (2012) extending outward at one end of the third direction. The bushing shaft (301) has a boss structure (3012) extending outward at one end away from the bushing (302). The boss structure (3012) is disposed in the stepped hole (2012) and cooperates with the stepped hole (2012) to prevent rotation.

4. The battery pack of claim 3, wherein, The outer diameter of the bushing shaft (301) is less than or equal to the width of the waist-shaped hole (2011) in the first direction; The boss structure (3012) has a straight section extending along the second direction on both sides in the first direction, and the distance between the straight sections is equal to the width of the stepped hole (2012) in the first direction.

5. The battery pack of claim 4, wherein, The boss structure (3012) is waist-shaped, and the semicircular diameter of the boss structure (3012) is equal to the semicircular diameter of the stepped hole (2012).

6. The battery box according to any one of claims 1 to 5, characterized in that, The lifting lug body (201) includes a sliding mounting part (2013) and a bushing mounting part (2014) extending along the second direction; the sliding mounting part (2013) is slidably mounted in the slide groove (102) and its position is adjustable along the first direction; The bushing mounting part (2014) is disposed on the sliding mounting part (2013), and the waist-shaped hole (2011) is disposed on the bushing mounting part (2014).

7. The battery pack of claim 6, wherein, The slide groove (102) is provided with a first through hole (103) in the first direction; the sliding mounting part (2013) is provided with a second through hole (2015) corresponding to the first through hole (103); the sliding mounting part (2013) is fixed in the slide groove (102) by a fastener (400) passing through the mutually cooperating first through hole (103) and second through hole (2015).

8. The battery pack of claim 6, wherein, The corner where the sliding mounting part (2013) contacts the slide groove (102) is chamfered.

9. The battery pack of claim 1, wherein, The box (100) includes a bottom plate (104) and a frame (105), the frame (105) is arranged along the second direction, and the side beam structure (101) is arranged along the first direction; the bottom plate (104), the frame (105) and the side beam structure (101) together enclose the box (100).

10. A battery pack, characterized by, Includes a battery box and battery cells as described in any one of claims 1-9; a plurality of said battery cells are stacked along a first direction and a second direction to form a battery module disposed in the box (100).

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