Battery box device, laminated structure of battery box device and power battery system

Abstract

The embodiment of the utility model discloses a battery box device, a battery box device laminated structure and a power battery system, the device comprises a box body, the box body comprises a bottom support, a box cover and a plurality of box walls connecting the bottom support and the box cover, the bottom support and the box cover are oppositely arranged, and the box walls are used for connecting the bottom support and the box cover; the first fixing piece is located on the side face, parallel to the box wall, of the box cover, and a plurality of first fixing points are arranged on the first fixing piece; the second fixing piece comprises a first fixing part and a second fixing part, the first fixing part is located on the side face, parallel to the box wall, of the bottom support, and the second fixing part is connected with the first fixing part and located on the box wall; the first fixing part is provided with a plurality of second fixing points, the second fixing part is provided with a plurality of openings, and the second fixing points are exposed in a one-to-one correspondence mode. The box wall strength and the space utilization rate are improved, so that the battery box is more flexible to mount.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery box technical field especially relates to a battery box device, battery box device laminated structure and power battery system. BACKGROUND

[0002] With the rapid growth of new energy automobile market, the demand for power battery system is increasing. The safety and lightweight of new energy automobile's endurance mileage become key indicators, which puts forward higher requirements for the design of battery box. As the "heart" of new energy automobile, the performance of power battery directly affects the overall performance of the automobile, therefore, the design of battery box needs to meet the multiple requirements of high energy density, long service life, high safety and lightweight.

[0003] In the design of prior art, the surrounding of standard battery box and the cover part are more considered only for the function of sealing and insulation, the space utilization is relatively poor and the strength of the wall around the cover is low. The new design will consider more on the functionality of the cover to achieve more functionality of the product. UTILITY MODEL CONTENT

[0004] The utility model provides a kind of battery box device, battery box device laminated structure and power battery system, improve the wall strength and space utilization, make the installation of battery box more flexible.

[0005] According to an aspect of the utility model, a kind of battery box device is provided, comprising:

[0006] Box body, including bottom support, cover and multiple walls connecting bottom support and cover, bottom support and cover are oppositely arranged, and wall is used to connect bottom support and cover;

[0007] First fixing part, on the side of cover and wall parallel, multiple first fixed points are provided on first fixing part;

[0008] Second fixing part, second fixing part includes first fixed part and second fixed part, first fixed part is located on the side of bottom support and wall parallel, second fixed part is connected with first fixed part, and located on wall;Multiple second fixed points are provided on first fixed part, and multiple openings are provided on second fixed part, and second fixed point is exposed one by one.

[0009] Optionally, first fixed point and second fixed point are set one by one;

[0010] First fixed point and second fixed point are coincident in the vertical projection of bottom support.

[0011] Optionally, it further includes high-voltage panel, is fixed on wall.

[0012] Optionally, the high-voltage panel comprises a substrate and a plurality of electrical connection structures, the electrical connection structures being located on the substrate.

[0013] Optionally, the box wall is multiplexed as the substrate.

[0014] Optionally, the first fixing point is a first positioning hole.

[0015] Optionally, the second fixing point is a second positioning hole.

[0016] Optionally, the first positioning hole is a waist-shaped hole; and / or the second positioning hole is a waist-shaped hole.

[0017] According to another aspect of the present application, a battery box device stacking structure is provided, comprising a plurality of vertically stacked battery box devices and the battery box device according to any of the embodiments of the present application; the direction in which the bottom support points to the box cover is the vertical stacking direction.

[0018] The plurality of vertically stacked battery box devices comprises first and second battery box devices arranged adjacently.

[0019] The first fixing point of the first battery box device and the second fixing point of the second battery box device are fixedly connected by a connecting member; or the second fixing point of the first battery box device and the first fixing point of the second battery box device are fixedly connected by a connecting member.

[0020] Optionally, the connecting member comprises a bolt.

[0021] According to another aspect of the present application, a power battery system is provided, comprising the battery box device and the battery box device stacking structure according to any of the embodiments of the present application.

[0022] The battery box device provided by the embodiments of the present application can realize multi-point fixing of the power battery or other components through the arrangement of the first and second fixing members, can directly vertically stack and fix the battery box, and can fix the fixing point on the box cover of the lower layer and the fixing point of the bottom support of the upper layer by a connecting member such as a bolt, so that the installation is more flexible, thereby improving the space utilization and the stability of the plurality of vertically stacked battery box devices. The first fixing part is located on the side surface parallel to the box wall, the second fixing part is connected with the first fixing part and is located on the box wall, the bottom support and the box cover are cooperated to adopt a fixing edge design with different heights, so as to increase the contact area, increase the stress capacity of the box wall, and enhance the strength of the box wall, so as to resist sudden events such as impact, vibration and collision, and enhance the safety.

[0023] It should be understood that the content described in this part is not intended to identify key or important features of the embodiments of the present application, nor is it used to limit the scope of the present application. Other features of the present application will become apparent through the following description. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. 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 battery box provided in an embodiment of this utility model. Detailed Implementation

[0026] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0027] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0028] This utility model provides a battery box device. Figure 1 This is a structural schematic diagram of a battery box provided in an embodiment of this utility model. (Reference) Figure 1 The battery box assembly includes:

[0029] The box body 10 includes a base 11, a box cover 12 and a plurality of box walls 13 connecting the base 11 and the box cover 12. The base 11 and the box cover 12 are arranged opposite to each other, and the box walls 13 are used to connect the base 11 and the box cover 12.

[0030] The first fixing member 20 is located on the side of the box cover 12 parallel to the box wall 13, and the first fixing member 20 is provided with a plurality of first fixing points 21;

[0031] The second fixing member 30 comprises a first fixing part 31 and a second fixing part 32, the first fixing part 31 is located on the side of the bottom support 11 parallel to the box wall 13, and the second fixing part 32 is connected with the first fixing part 31 and located on the box wall 13; a plurality of second fixing points 33 are arranged on the first fixing part 31, and a plurality of openings are arranged on the second fixing part 32, and the second fixing points 33 are exposed one by one.

[0032] Specifically, the bottom support 11, the box wall 13 and the box cover 12 are assembled into a complete structure of the battery box. During the assembly process, the box wall 13 connects the bottom support 11 and the box cover 12 to form a closed or semi-closed space for accommodating power batteries or other related components. The first fixing member 20 is installed on the side of the box cover 12 parallel to the box wall 13. A plurality of first fixing points 21 are arranged on the first fixing member 20, and the plurality of first fixing points 21 can be threaded holes, buckles or other fixing devices for fixed connection with fixing points of other battery box devices. A plurality of second fixing points 33 are arranged on the first fixing part 31, and the second fixing points 33 are similar to the first fixing points 21 and are used for fixed connection. The second fixing part 32 is located on the box wall 13 to achieve higher strength of the box wall around the box cover 12 to cope with sudden accidents such as stronger impact, vibration and collision. A plurality of openings are arranged on the second fixing part 32, and the second fixing points 33 are exposed one by one.

[0033] The battery box device provided by the embodiment of the utility model can realize multi-point fixing of power batteries or other components through the arrangement of the first fixing member 20 and the second fixing member 30, can directly vertically stack and fix the battery box, fixes the fixing points on the box cover 12 of the lower layer and the fixing points of the bottom support 11 of the upper layer battery box through a connecting member such as a bolt, makes installation more flexible, thereby improving space utilization and stability of the multiple vertically stacked battery box devices. The first fixing part 31 is located on the side of the bottom support 11 parallel to the box wall 13, and the second fixing part 32 is connected with the first fixing part 31 and located on the box wall 13, so that the bottom support 11 and the box cover 12 cooperate to adopt a fixing edge design with different height changes, thereby increasing the contact area, the stress capacity of the box wall 13 and the strength of the box wall 13 to resist sudden events such as impact, vibration and collision and enhance safety.

[0034] Optionally, the first fixing points 21 and the second fixing points 33 are arranged one by one in correspondence.

[0035] The first fixing points 21 and the second fixing points 33 are vertically projected on the bottom support 11.

[0036] Specifically, the first fixing part 20 is installed on the side of the box cover 12, the first fixing part 31 of the second fixing part 30 is installed on the corresponding position of the bottom support 11, and the second fixing point 33 is ensured to coincide with the first fixing point 21 in the vertical projection of the bottom support 11. Through reasonable design and layout of the fixing points, the space in the battery box can be maximized, and the space utilization rate can be improved. The arrangement of the first fixing point 21 and the second fixing point 33 not only enhances the fixing stability of the power battery or other components, but also enhances the strength of the battery box wall 13. It helps to protect the components in the battery box from external impact and damage, prolongs the service life of the components, and improves the safety and reliability of the battery box.

[0037] Optionally, the battery box device further comprises a high-voltage panel 40 fixed to the box wall 13.

[0038] Specifically, the high-voltage panel 40 is fixed to the box wall 13, which is compared with the scheme of fixing the high-voltage panel 40 to the bottom support 11 and the box cover 12, which helps to realize the vertical stacking of multiple battery box devices.

[0039] Optionally, the high-voltage panel 40 comprises a substrate 41 and a plurality of electrical connection structures 42, and the electrical connection structures 42 are located on the substrate 41.

[0040] Specifically, a plurality of electrical connection structures 42 are fixedly connected to the substrate 41, and the electrical connection structures 42 play a role of conducting electricity and connection on the substrate 41, and ensure the energy transmission between the power battery pack and the external load or charging equipment. During the charging process, the external power supply is input into the power battery pack through the electrical connection structures 42 of the high-voltage panel 40; during the discharging process, the power battery pack provides electric energy to the external load through the electrical connection structures 42. The design of the high-voltage panel 40 and its electrical connection structures 42 conforms to the electrical safety standard, which can effectively prevent safety hazards such as electric shock, short circuit and fire. The electrical connection structures 42 are made of high-quality materials and advanced technology, have low resistance and high conductivity, can optimize the energy transmission efficiency, reduce energy loss, and improve the overall performance of the power battery system. The high-voltage panel 40 and its electrical connection structures 42 adopt modular design, which is convenient for disassembly and replacement, reduces the system maintenance cost, and improves the maintenance efficiency.

[0041] Optionally, the box wall 13 is reused as the substrate 41.

[0042] Specifically, by reusing the box wall 13 as the base plate 41, the use of additional base plates 41 is reduced, thereby simplifying the overall structure, reducing manufacturing costs, and integrating the high-voltage panel 40 with the box wall 13, which can effectively reduce the difficulty of production and installation, reduce the number of components, and reduce material costs. The high-voltage panel 40 is installed on the more stable bottom support 11, which can make the high-voltage circuit more secure. Reusing the box wall 13 as the base plate 41 can more effectively utilize the space inside the battery box, providing more capacity or a more compact layout for the power battery system. The box wall 13 as the base plate 41 can increase the strength and rigidity of the overall structure, improving the safety of the power battery system in extreme situations such as collisions.

[0043] Optionally, the first fixing point 21 is a first positioning hole;

[0044] And / or, the second fixing point 33 is a second positioning hole.

[0045] Specifically, the first fixing point 21 is a first positioning hole; the second fixing point 33 is a second positioning hole. The design of the first positioning hole and the second positioning hole can ensure that each component in the battery box device, the stacked structure, and the power battery system can be precisely aligned during assembly, avoiding assembly errors. By fixing through the first positioning hole and the second positioning hole, the components can be more effectively prevented from loosening or shifting under external forces such as vibration or impact, enhancing the strength of the box wall 13 and safety; thereby improving the stability of the entire system. Using positioning holes for fixing can simplify the assembly process, reduce assembly time, and reduce assembly costs.

[0046] Optionally, the first positioning hole is a waist-shaped hole; and / or, the second positioning hole is a waist-shaped hole.

[0047] Specifically, the first positioning hole and the second positioning hole are both waist-shaped holes. The design of the waist-shaped hole allows for a certain position adjustment space during assembly, making the alignment and fixing between components more flexible, reducing assembly errors, and improving assembly efficiency. Since the waist-shaped hole has a certain length and width, even if there is a certain deviation during assembly, the positioning requirements can still be met by adjusting the position of the components. This reduces the requirement for assembly precision and improves the fault tolerance of assembly. The design of the waist-shaped hole can adapt to components of different sizes, allowing the same set of battery box devices, stacked structures, or power battery systems to be compatible with battery units or other components of multiple specifications, reducing production costs, and improving the versatility and flexibility of the system.

[0048] According to another aspect of the present application, a battery box device stacked structure is provided, comprising a plurality of vertically stacked battery box devices and the battery box device according to any embodiment of the present application; the direction of the bottom support pointing to the box cover is the vertical stacking direction;

[0049] The plurality of vertically stacked battery box devices comprises a first battery box device and a second battery box device arranged adjacently;

[0050] The first fixing point of the first battery box device and the second fixing point of the second battery box device are fixedly connected by a connecting piece; or the second fixing point of the first battery box device and the first fixing point of the second battery box device are fixedly connected by a connecting piece.

[0051] Specifically, a plurality of battery box devices are prepared, including a first battery box device and a second battery box device arranged adjacently; the plurality of battery box devices are stacked in a vertically stacked direction. The fixing points of adjacent battery box devices are fixedly connected by a connecting piece. Specifically, the first fixing point of the first battery box device and the second fixing point of the second battery box device can be connected by a bolt, or the second fixing point of the first battery box device and the first fixing point of the second battery box device can be connected by a bolt. After completing the stacking and fixed connection, the entire stacked structure needs to be inspected and tested. It is ensured that all battery box devices are firmly stacked together, and the connecting piece is not loose or damaged. At the same time, the stability and safety of the stacked structure also need to be tested to ensure that it can meet the use requirements. By vertically stacking, the space can be fully utilized, so that more battery box devices can be accommodated in a limited area, improving the space utilization. By connecting the fixing points of adjacent battery box devices with bolts, it can more effectively prevent the parts from loosening or displacing under the action of external forces such as vibration or impact, enhance the strength of the box wall 13, and enhance the safety; thereby improving the stability of the entire system. Since the battery box devices are vertically stacked, when maintaining or replacing, a single battery box device can be conveniently disassembled and reinstalled without disassembling the entire stacked structure, reducing the maintenance cost and time cost.

[0052] Optionally, the connecting piece comprises a bolt.

[0053] Specifically, the first fixing point of the first battery box device and the second fixing point of the second battery box device are fixedly connected by a bolt; or the second fixing point of the first battery box device and the first fixing point of the second battery box device are fixedly connected by a bolt. It can increase the space utilization of the installation scene, and the boundary value can be explored through subsequent testing to increase the number of stacked layers, making the space utilization more flexible. The bolt connection has high anti-seismic performance, which can more effectively prevent the parts from loosening or displacing under the action of external forces such as vibration or impact, enhance the strength of the box wall, and enhance the safety; thereby improving the stability of the entire system. The bolt is easy to replace, reducing the maintenance cost and making the installation and disassembly process more simple and flexible.

[0054] According to another aspect of the utility model, a kind of power battery system is provided, including the battery box device and battery box device laminated structure described in any embodiment of the utility model.

[0055] It should be understood that the steps can be reordered, added, or deleted using the various forms of flow shown above. For example, the steps described in the utility model can be executed in parallel, sequentially, or in a different order, as long as the desired results of the technical solutions of the utility model can be achieved, which is not limited herein.

[0056] The above specific embodiments do not constitute a limitation on the scope of protection of the utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included within the scope of protection of the utility model.

Claims

1. A battery case device characterized by comprising: The battery box device comprises: a box body comprising a bottom support, a box cover, and a plurality of box walls connecting the bottom support and the box cover, the bottom support and the box cover being oppositely arranged, and the box walls being used to connect the bottom support and the box cover; a first fixing member located on a side of the box cover parallel to the box wall, the first fixing member being provided with a plurality of first fixing points; a second fixing member, the second fixing member comprising a first fixing part and a second fixing part, the first fixing part being located on a side of the bottom support parallel to the box wall, the second fixing part being connected with the first fixing part and located on the box wall, the first fixing part being provided with a plurality of second fixing points, and the second fixing part being provided with a plurality of openings corresponding to the second fixing points.

2. The battery box apparatus according to claim 1, characterized by, The first fixing points and the second fixing points are one-to-one corresponding. The first fixing points and the second fixing points are vertically projected on the bottom support and coincide with each other.

3. The battery box apparatus according to claim 1, characterized by, The battery box device further comprises a high-voltage panel fixed to the box wall.

4. The battery box apparatus according to claim 3, characterized by The high-voltage panel comprises a substrate and a plurality of electrical connection structures located on the substrate.

5. The battery box apparatus according to claim 4, characterized by The box wall is multiplexed as the substrate.

6. The battery box apparatus of claim 1, wherein, The first fixing points are first positioning holes. The second fixing points are second positioning holes.

7. The battery box apparatus of claim 6, wherein, The first positioning holes are waist-shaped holes.

8. A battery case device laminated structure characterized by comprising: The second positioning holes are waist-shaped holes. The battery box device comprises: a plurality of vertically stacked battery box devices, the battery box device comprising any one of the battery box devices according to claims 1-7; a direction in which the bottom support points to the box cover is a vertical stacking direction; the plurality of vertically stacked battery box devices comprising first and second battery box devices arranged adjacently; 9. The battery pack apparatus laminate structure according to claim 8, wherein the first fixing points of the first battery box device and the second fixing points of the second battery box device being fixedly connected by a connecting member; or the second fixing points of the first battery box device and the first fixing points of the second battery box device being fixedly connected by a connecting member.

10. A power battery system, characterized in that, The connecting member comprises a bolt. The battery box device comprises any one of the battery box devices according to claims 1-7 and the battery box device stacking structure according to claims 8 or 9.

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