Battery devices and power-consuming devices

Abstract

The present application discloses a battery device and an electric device, which relates to the technical field of new energy devices, wherein the battery device comprises a box body, a box cover and a battery cell assembly, the box body comprises a supporting member, a first side plate and a second side plate, the supporting member is used to support the battery cell assembly; the supporting member is provided with a first limiting groove and a second limiting groove, the first limiting groove and the second limiting groove are respectively arranged at the two ends of the supporting member; one end of the first side plate is provided with a first clamping part, the first clamping part is clamped into the first limiting groove; one end of the second side plate is provided with a second clamping part, the second clamping part is clamped into the second limiting groove; the box cover is arranged on the side of the box body away from the supporting member, the box cover is respectively connected with the supporting member, the first side plate and the second side plate to form a closed space; the battery cell assembly is arranged on the supporting member, and the battery cell assembly is located in the closed space. The technical solution provided by the present application can not only provide protection for the battery cell assembly, but also reduce the time required for the traditional bolt or welding connection method.

Description

Technical Field

[0001] The present application relates to the technical field of new energy devices, and in particular to a battery device and an electrical device. Background Art

[0002] Energy conservation and emission reduction are the key to the sustainable development of the automobile industry. Electric vehicles have become an important part of the sustainable development of the automobile industry due to their advantages of energy conservation and environmental protection. For electric vehicles, battery technology is an important factor related to their development. The battery device includes a box for accommodating battery cells. In the traditional box structure, it is necessary to use positioning tools to pre-position the panels of the box before welding to ensure that the box has sufficient structural strength; however, the above box structure has the problems of difficult assembly and low assembly efficiency. Utility Model Content

[0003] The main purpose of the present application is to propose a battery device and an electrical device, which aims to solve the problem that the existing box body needs to use a positioning tool to pre-position the panels of the box body before welding, resulting in assembly troubles and low assembly efficiency.

[0004] To achieve the above objectives, the battery device proposed in this application includes:

[0005] A box body, the box body comprising a supporting member, a first side plate and a second side plate, the supporting member is used to support a battery monomer assembly; the supporting member is provided with a first limiting groove and a second limiting groove, the first limiting groove and the second limiting groove are respectively provided at two ends of the supporting member; one end of the first side plate is provided with a first clamping portion, the first clamping portion is clamped into the first limiting groove; one end of the second side plate is provided with a second clamping portion, the second clamping portion is clamped into the second limiting groove;

[0006] A box cover, the box cover is arranged on a side of the box body away from the supporting member, and the box cover is respectively connected to the supporting member, the first side plate and the second side plate to form a closed space;

[0007] A battery cell assembly is arranged on the supporting member, and the battery cell assembly is located in the closed space.

[0008] The battery device provided in this embodiment includes a box body, a box cover and a battery cell assembly, wherein the box cover is arranged on a side of the box body away from the supporting member, and the box cover is respectively connected to the supporting member, the first side plate and the second side plate to form a closed space; the battery cell assembly is arranged on the supporting member, and the battery cell assembly is located in the closed space; the battery cell assembly is supported by the supporting member, and a first limiting groove and a second limiting groove are respectively provided at both ends of the supporting member, and then the first clamping portion of the first side plate is clamped into the first limiting groove, so that the first side plate is stably installed on the supporting member; and the second clamping portion of the second side plate is clamped into the second limiting groove, so that the second side plate is stably installed on the supporting member; the battery device provides sufficient mechanical strength to protect the battery cell assembly through the clamping of the supporting member with the first side plate and the second side plate respectively, and at the same time reduces the time and complexity required for the traditional bolt or welding connection method when the first side plate, the second side plate and the supporting member are connected, and has the advantages of simple assembly operation, high assembly efficiency and high connection stability.

[0009] In one embodiment, the supporting member is provided with a groove, and a first limiting protrusion and a second limiting protrusion are provided in the groove, and the first limiting protrusion and the second limiting protrusion are respectively located at opposite ends of the groove; the first limiting groove is formed between the first limiting protrusion and an inner wall of one side of the groove, and the second limiting groove is formed between the second limiting protrusion and an inner wall of a side of the groove away from the first limiting protrusion.

[0010] By forming a groove on the supporting member for accommodating the battery monomer assembly, and the first limiting protrusion and the second limiting protrusion are respectively located at opposite ends of the groove, the first limiting groove can be formed between the first limiting protrusion and the inner wall of one side of the groove, providing a positioning and fixing structure for the installation of the first side plate and the supporting member; and by forming the second limiting protrusion and the inner wall of one side of the groove away from the first limiting protrusion, the second limiting groove can be formed, providing a positioning and fixing structure for the installation of the second side plate and the supporting member. During the assembly process, the first clamping portion of the first side plate is clamped into the first limiting groove, and the second clamping portion of the second side plate is clamped into the second limiting groove, which not only improves the assembly efficiency, but also enhances the structural stability of the entire battery device.

[0011] In one embodiment, the battery device further includes a first locking member, one end of which passes through the first limiting protrusion and is detachably connected to the first side plate; the first locking member is used to lock the first side plate to the first limiting protrusion.

[0012] By adding a first locking member and allowing the first locking member to pass through the first limiting protrusion and be detachably connected to the first side plate, the strength of the connection structure between the first side plate and the supporting member can be enhanced, thereby enhancing the stability of the battery device; at the same time, it is convenient to quickly disassemble the first side plate and the supporting member when necessary to maintain and repair the battery device.

[0013] In one embodiment, the battery device further includes a second locking member, one end of which passes through the second limiting protrusion and is detachably connected to the second side plate.

[0014] Similarly, by adding a second locking member and making the second locking member pass through the second limiting protrusion and realize a detachable connection with the second side plate, the connection structural strength between the second side plate and the supporting member can be enhanced, thereby enhancing the stability of the battery device; at the same time, it is convenient to quickly disassemble the second side plate and the supporting member when necessary, so as to maintain and repair the battery device.

[0015] In one embodiment, a first mounting hole is provided on the first limiting protrusion, and a second mounting hole is provided on the first side plate; one end of the first locking member passes through the first mounting hole and is threadedly connected to the second mounting hole; the first locking member is used to lock the first side plate to the first limiting protrusion.

[0016] The first locking component is a key component for realizing the connection between the first side panel and the first limiting protrusion, wherein one end of the first locking component passes through the first mounting hole on the first limiting protrusion and is threadedly connected with the second mounting hole on the first side panel, and the first locking component is utilized to realize the locking connection between the first side panel and the first limiting protrusion; the first locking component not only provides a strong fixing force, but also allows easy disassembly when needed, so as to facilitate maintenance and replacement.

[0017] In one embodiment, a third mounting hole is provided on the second limiting protrusion, a fourth mounting hole is provided on the second side plate, one end of the second locking member passes through the third mounting hole and is threadedly connected to the fourth mounting hole; the second locking member is used to lock the second side plate to the second limiting protrusion.

[0018] Similarly, the second locking component is a key component for realizing the connection between the second side panel and the second limiting protrusion, wherein one end of the second locking component passes through the third mounting hole on the second limiting protrusion and is threadedly connected with the fourth mounting hole on the second side panel. The second locking component is utilized to realize the locking connection between the second side panel and the second limiting protrusion. The first locking component not only provides a strong fixing force, but also allows easy disassembly when needed, thus facilitating maintenance and replacement.

[0019] In one embodiment, a first avoidance groove is provided on the first limiting protrusion, and an end of the first locking member away from the first side plate is located in the first avoidance groove.

[0020] By adding a first avoidance groove on the first limiting protrusion and positioning the end of the first locking component away from the first side plate in the first avoidance groove, it is ensured that the first locking component will not conflict with other components during installation and use, thereby reducing possible wear and damage, and at the same time ensuring that the first locking component will not occupy additional space or affect the overall layout of the battery device.

[0021] In one embodiment, a second avoidance groove is provided on the second limiting protrusion, and an end of the second locking member away from the second side plate is located in the second avoidance groove.

[0022] Similarly, by adding a second avoidance groove on the second limiting protrusion and positioning the end of the second locking component away from the second side plate in the second avoidance groove, it is ensured that the second locking component will not conflict with other components during installation and use, thereby reducing possible wear and damage, and at the same time ensuring that the second locking component will not occupy additional space or affect the overall layout of the battery device.

[0023] In one embodiment, a fifth mounting hole is further provided on the first limiting protrusion; a first end plate and a second end plate are respectively provided at both ends of the battery cell assembly, and the fifth mounting hole is used for detachable connection with the first end plate; a sixth mounting hole is provided on the second limiting protrusion, and the sixth mounting hole is used for detachable connection with the second end plate.

[0024] By adding the fifth mounting hole, the first limiting protrusion can be detachably connected to the first end plate of the battery cell assembly, which increases the flexibility and applicability of the structure, and at the same time improves the installation stability of the battery cell assembly, and the battery cell assembly can be quickly disassembled or replaced when necessary, which improves the maintenance and upgrade efficiency of the battery device. Similarly, by adding the sixth mounting hole, the second limiting protrusion can be detachably connected to the second end plate of the battery cell assembly, which increases the flexibility and applicability of the structure. At the same time, the fifth mounting hole and the sixth mounting hole are respectively used to connect to the first end plate and the second end plate on both sides of the battery cell assembly, which can further improve the installation stability of the battery cell assembly, and the battery cell assembly can be quickly disassembled or replaced when necessary, which improves the maintenance and upgrade efficiency of the battery device.

[0025] In one embodiment, the first limiting protrusion, the second limiting protrusion and the supporting member are an integrally formed structure.

[0026] In order to improve the stability of the structure and reduce the number of assembly steps, the first limiting protrusion, the second limiting protrusion and the supporting member are arranged as an integrally formed structure. All key parts are formed through a one-time manufacturing process, which reduces the connection points between components. The integrity and continuity of the structure are ensured, which helps to disperse stress when subjected to external forces and reduce the risk of structural failure. Furthermore, since no additional components are required for connection, the manufacturing and assembly processes are simplified.

[0027] In one embodiment, a first adhesive layer is provided between the outer surface of the first clamping portion and the inner wall of the first limiting groove.

[0028] The first clamping portion of the first side plate is clamped into the first limiting groove, and the first adhesive layer between the outer surface of the first clamping portion and the inner wall of the first limiting groove is used to stably mount the first side plate on the supporting member; the clamping of the first side plate and the first limiting groove and the cooperation of the first adhesive layer form a stable sandwich structure; it not only provides sufficient mechanical strength to protect the battery cell assembly, but also reduces the time and complexity required for connecting the first side plate to the supporting member using traditional bolts or welding.

[0029] In one embodiment, a second adhesive layer is provided between the outer surface of the second clamping portion and the inner wall of the second limiting groove.

[0030] The second clamping portion of the second side plate is clamped into the second limiting groove, and the second adhesive layer between the outer surface of the second clamping portion and the inner wall of the second limiting groove is used to stably mount the second side plate on the supporting member; the clamping of the second side plate and the second limiting groove and the cooperation of the second adhesive layer form a stable sandwich structure; it not only provides sufficient mechanical strength to protect the battery cell assembly, but also reduces the time and complexity required for connecting the second side plate to the supporting member using traditional bolts or welding.

[0031] In one embodiment, the width of the first limiting groove gradually increases from the bottom to the groove opening; the width change of the first clamping portion is adapted to the width change of the first limiting groove.

[0032] The width of the first limit groove gradually increases from the bottom to the notch, that is, it has a trapezoidal feature; in order to make the first clamping part adapt to the width change of the first limit groove, the first clamping part on the first side plate is also provided with a corresponding width change, ensuring that the first clamping part can be smoothly inserted into the first limit groove; and the purpose of gradual locking can be achieved during the process of the first clamping part being inserted into the first limit groove, thereby improving the stability and reliability of the connection between the first clamping part and the first limit groove. When the first clamping part is inserted into the first limit groove, due to the gradual increase in the width of the first limit groove, the first clamping part can be gradually locked in the first limit groove to prevent accidental falling off or displacement; therefore, an effective insertion and locking mechanism is formed through the matching of the first limit groove and the first clamping part.

[0033] In one embodiment, the width of the second limiting groove gradually increases from the bottom to the groove opening; the width change of the second clamping portion is adapted to the width change of the second limiting groove.

[0034] Similarly, the width of the second limiting groove gradually increases from the bottom to the notch, that is, it has a trapezoidal feature; in order to make the second clamping part adapt to the width change of the second limiting groove, the second clamping part on the second side plate is also provided with a corresponding width change, ensuring that the second clamping part can be smoothly inserted into the second limiting groove; and the purpose of gradual locking can be achieved during the insertion of the second clamping part into the second limiting groove, thereby improving the stability and reliability of the connection between the second clamping part and the second limiting groove. When the second clamping part is inserted into the first limiting groove, due to the gradual increase in the width of the second limiting groove, the second clamping part can be gradually locked in the second limiting groove to prevent accidental falling off or displacement; therefore, an effective insertion and locking mechanism is formed through the matching of the second limiting groove and the second clamping part.

[0035] In one embodiment, the bottom edge of the first limiting groove and the bottom edge of the second limiting groove are both provided with inner chamfers, the end of the first clamping portion and the end of the second clamping portion are both provided with outer chamfers, and the inner chamfers match the outer chamfers.

[0036] In order to improve the matching accuracy and assembly convenience between the first side plate and the supporting member, and between the second side plate and the supporting member, inner chamfers are provided at the bottom edges of the first limiting groove and the second limiting groove, and outer chamfers are provided at the ends of the first clamping part and the second clamping part, so that the first clamping part can be more easily inserted into the first limiting groove, and the second clamping part can be more easily inserted into the second limiting groove, and better guidance is provided during the assembly process. At the same time, the matching of the inner chamfer and the outer chamfer can ensure a tight fit between the first clamping part and the first limiting groove or the second clamping part and the limiting groove, reduce the gap or looseness caused by improper assembly, and thus improve the structural stability of the entire battery device. In addition, since a more uniform contact surface is provided between the inner chamfer and the outer chamfer, it helps to disperse stress and reduce the risk of local excessive deformation or damage.

[0037] In one embodiment, the supporting member is provided with a first extension portion and a second extension portion on both sides along the length direction of the first limiting groove or the second limiting groove, respectively; the battery device also includes a first support member and a second support member, the first support member abuts against the bottom of the first extension portion, and the second support member abuts against the bottom of the second extension portion.

[0038] In order to further enhance the structural stability and supporting capacity of the supporting member, a first extension portion and a second extension portion are added so that the first supporting member abuts against the bottom of the first extension portion, and the second supporting member abuts against the bottom of the second extension portion. This enhances the structural strength of the supporting member, helps to disperse stress when subjected to external forces, reduces the risk of structural failure, and improves the stability of the battery device in the vertical direction.

[0039] In one embodiment, the length of the first side plate along the length direction of the first limiting groove is greater than the length of the first clamping portion along the length direction of the first limiting groove; the first side plate is provided with a first abutting portion and a second abutting portion on both sides along the length direction of the first limiting groove respectively; the first abutting portion abuts against the top of the first extension portion, and the second abutting portion abuts against the top of the second extension portion.

[0040] In order to enhance the fit between the first side panel and the supporting member and the stability of the overall structure, a first abutment portion and a second abutment portion are respectively provided on both sides of the first side panel along the length direction of the first limiting groove or the second limiting groove, so that the first side panel can fit closely with the first extension portion and the second extension portion of the supporting member to provide additional support and fixing.

[0041] In one embodiment, the second side plate is provided with a third abutment portion and a fourth abutment portion on both sides along the length direction of the first limiting groove or the second limiting groove, respectively; the third abutment portion abuts against the top of the first extension portion, and the fourth abutment portion abuts against the top of the second extension portion.

[0042] In one embodiment, the length of the second side plate along the length direction of the second limiting groove is greater than the length of the second clamping portion along the length direction of the second limiting groove; the second side plate is provided with a third abutting portion and a fourth abutting portion on both sides of the length direction of the second limiting groove respectively; the third abutting portion abuts against the top of the first extension portion, and the fourth abutting portion abuts against the top of the second extension portion.

[0043] Similarly, in order to enhance the fit between the second side panel and the supporting member and the stability of the overall structure, a third abutment portion and a fourth abutment portion are respectively provided on both sides of the second side panel along the length direction of the first limiting groove or the second limiting groove, so that the second side panel can fit closely with the first extension portion and the second extension portion of the supporting member to provide additional support and fixing.

[0044] In one embodiment, the box cover includes a top plate, a third side plate and a fourth side plate, and opposite sides of the top plate are respectively connected to the third side plate and the fourth side plate, one end of the top plate is connected to an end of the first side plate away from the supporting member, and the other end of the top plate is connected to an end of the second side plate away from the supporting member; the third side plate and the fourth side plate are respectively located in the first limiting groove; and / or, at both ends of the second limiting groove along the length direction, the two ends of the third side plate are respectively connected to the first side plate and the second side plate; the side of the third side plate away from the top plate is connected to one side of the supporting member; the two ends of the fourth side plate are respectively connected to the first side plate and the second side plate, and the side of the fourth side plate away from the top plate is connected to the side of the supporting member away from the third side plate.

[0045] In order to further protect the battery cell assembly and provide a complete closed space, a box cover is added to cover the support, the first side plate and the second side plate, wherein the opposite sides of the top plate are connected to the third side plate and the fourth side plate respectively, one end of the top plate is connected to the end of the first side plate away from the support, and the other end of the top plate is connected to the end of the second side plate away from the support; the third side plate and the fourth side plate are respectively located in the first limiting groove; and / or, the two ends of the second limiting groove along the length direction, the two ends of the third side plate are respectively connected to the first side plate and the second side plate; the side of the third side plate away from the top plate is connected to the side of the support; the two ends of the fourth side plate are respectively connected to the first side plate and the second side plate, and the side of the fourth side plate away from the top plate is connected to the side of the support away from the third side plate, so as to ensure the integrity and airtightness of the battery device, thereby protecting the battery cell assembly inside the battery device from the influence of the external environment, such as preventing the intrusion of dust, moisture and other pollutants. In addition, the box cover and the box body also help to maintain the temperature stability inside the battery, reduce heat loss, and improve the performance and safety of the battery device.

[0046] In one embodiment, a side of the first side panel away from the supporting member is set as a first side panel, and both sides of the first side panel along the length direction of the first limiting groove or the second limiting groove are set as a second side panel and a third side panel; a side of the second side panel away from the supporting member is set as a fourth side panel, and both sides of the second side panel along the length direction of the first limiting groove or the second limiting groove are set as a fifth side panel and a sixth side panel; a side of the first supporting member away from the supporting member is set as a seventh side panel, and a side of the second supporting member away from the supporting member is set as an eighth side panel; a sealing layer is provided on the first side panel, the second side panel, the third side panel, the fourth side panel, the fifth side panel, the sixth side panel, the seventh side panel and the eighth side panel; and the inner wall surface of the box cover abuts against the sealing layer.

[0047] In order to improve the overall sealing performance of the battery device and protect the battery cell assembly from the influence of the external environment, the first side plate and the second side plate and each side surface of the first support member and the second support member are designed to be provided with a sealing layer, and the inner wall surface of the box cover is designed to abut against these sealing layers to form a closed protective space, thereby preventing moisture, dust and other external impurities from entering the interior of the battery device, thereby protecting the battery cell assembly and electrical connections from corrosion and damage, and also helping to maintain a stable environment inside the battery and extend the battery life.

[0048] In one embodiment, the material of the supporting member includes a thermosetting resin-based composite material.

[0049] Thermosetting resin-based composite materials not only provide excellent mechanical properties, but also have natural insulation properties. By utilizing the insulation properties of the support itself, additional insulation surface treatment can be effectively avoided, thereby reducing production costs.

[0050] The present application also provides an electrical device, comprising the battery device as described above.

[0051] The electrical device includes a battery device, wherein the battery device includes a box body, a box cover and a battery cell assembly, wherein the box cover is arranged on a side of the box body away from the supporting member, and the box cover is respectively connected to the supporting member, the first side plate and the second side plate to form a closed space; the battery cell assembly is arranged on the supporting member, and the battery cell assembly is located in the closed space; the battery cell assembly is supported by the supporting member, and a first limiting groove and a second limiting groove are respectively provided at both ends of the supporting member, and then the first clamping portion of the first side plate is clamped into the first limiting groove, so that the first side plate is stably installed on the supporting member; and the second clamping portion of the second side plate is clamped into the second limiting groove, so that the second side plate is stably installed on the supporting member; the battery device provides sufficient mechanical strength to protect the battery cell assembly through the clamping of the supporting member with the first side plate and the second side plate respectively, and at the same time reduces the time and complexity required for the traditional bolt or welding connection method when the first side plate, the second side plate and the supporting member are connected, and has the advantages of simple assembly operation, high assembly efficiency and high connection stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0053] Figure 1 A schematic diagram of an exploded structure of an embodiment of a battery device provided in the present application;

[0054] Figure 2 A schematic structural diagram of a box body and a battery cell assembly of an embodiment of a battery device provided in the present application;

[0055] Figure 3 A schematic diagram of the structure of a box body of an embodiment of a battery device provided in the present application;

[0056] Figure 4 A schematic diagram of the exploded structure of a box body of an embodiment of a battery device provided in the present application;

[0057] Figure 5 A schematic structural diagram of a supporting member of an embodiment of a battery device provided in the present application;

[0058] Figure 6 A schematic diagram of the top view of the box body of an embodiment of the battery device provided in the present application;

[0059] Figure 7 for Figure 6 Schematic diagram of the cross section at AA in FIG.

[0060] Figure 8 Another schematic diagram of the top view of the box body of an embodiment of the battery device provided in the present application;

[0061] Fig. 9 for Figure 8 Schematic diagram of the cross section at BB in FIG.

[0062] Fig.10 for Figure 8 Schematic diagram of the cross section at CC in FIG.

[0063] Fig.11 A schematic top view of the structure of an embodiment of a battery device provided in the present application;

[0064] Fig.12 for Fig.11 Schematic diagram of the cross section at DD in FIG.

[0065] Description of Figure Numbers:

[0066] 1. Supporting member; 11. First limiting groove; 12. Second limiting groove; 13. Recess; 14. First limiting protrusion; 141. First mounting hole; 142. First avoidance groove; 143. Fifth mounting hole; 15. Second limiting protrusion; 151. Third mounting hole; 152. Second avoidance groove; 153. Sixth mounting hole; 16. First extension portion; 17. Second extension portion;

[0067] 2. first side plate; 21. first clamping portion; 22. first abutting portion; 23. second abutting portion; 24. first side surface; 25. second side surface; 26. third side surface;

[0068] 3. second side plate; 31. second clamping portion; 32. fourth mounting hole; 33. third abutting portion; 34. fourth abutting portion; 35. fourth side surface; 36. fifth side surface; 37. sixth side surface;

[0069] 4. The first locking member;

[0070] 5. Second locking member;

[0071] 6. A first support member;

[0072] 7. Second support member; 71. Eighth side surface;

[0073] 8. Box cover; 81. Top plate; 82. Third side plate; 83. Fourth side plate;

[0074] 9. Battery cell assembly; 91. First end plate; 911. Seventh mounting hole; 92. Second end plate; 921. Eighth mounting hole;

[0075] 101, fourth locking member;

[0076] 102. Fifth locking member;

[0077] 103. Seventh locking component.

[0078] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0079] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0080] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0081] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0082] Energy conservation and emission reduction are the key to the sustainable development of the automobile industry. Electric vehicles have become an important part of the sustainable development of the automobile industry due to their advantages of energy conservation and environmental protection. For electric vehicles, battery technology is an important factor related to their development. The battery device includes a box for accommodating battery cells. In the traditional box structure, it is necessary to use positioning tools to pre-position the panels of the box before welding to ensure that the box has sufficient structural strength; however, the above box structure has the problems of difficult assembly and low assembly efficiency.

[0083] Based on the above problems, in order to ensure that the battery device has sufficient structural strength, reduce assembly steps and improve assembly efficiency, the present application provides a battery device. Figures 1 to 12 , the battery device comprising:

[0084] The box body includes a supporting member 1, a first side plate 2 and a second side plate 3. The supporting member 1 is used to support the battery monomer assembly 9; the supporting member 1 is provided with a first limiting groove 11 and a second limiting groove 12, and the first limiting groove 11 and the second limiting groove 12 are respectively arranged at both ends of the supporting member 1; one end of the first side plate 2 is provided with a first clamping portion 21, and the first clamping portion 21 is clamped into the first limiting groove 11; one end of the second side plate 3 is provided with a second clamping portion 31, and the second clamping portion 31 is clamped into the second limiting groove 12;

[0085] A box cover 8, which is disposed on a side of the box body away from the supporting member 1, and is respectively connected to the supporting member 1, the first side plate 2 and the second side plate 3 to form a closed space;

[0086] The battery cell assembly 9 is arranged on the supporting member 1, and the battery cell assembly 9 is located in a closed space.

[0087] The battery device mentioned in the embodiment of the present application includes a box body and a battery cell assembly 9. The box body may include a box body and a box cover 8. The box body and the box cover 8 are buckled together to form a closed space inside the box body to accommodate the battery cell assembly 9. The supporting member 1, the first side plate 2, and the second side plate 3 are connected to form the box body. The closed here means covering or closing, which can be sealed or unsealed.

[0088] The battery apparatus mentioned in the embodiment of the present application may include one or more battery cell assemblies 9 for providing voltage and capacity. The battery cell assembly 9 may include a plurality of battery cells, which are connected in series, in parallel or in mixed connection through a busbar.

[0089] In some embodiments, the battery cell assembly 9 may include a plurality of battery cells, which are connected in series, in parallel, or in mixed series via a busbar. As an example, the battery cell assembly 9 is formed by arranging and fixing a plurality of battery cells to form an independent module. As an example, the battery cell assembly 9 may be formed by bundling a plurality of battery cells by a cable tie.

[0090] It can be seen that the battery device provided in this embodiment includes a box body, a box cover 8 and a battery cell assembly 9, wherein the box cover 8 is arranged on a side of the box body away from the supporting member 1, and the box cover 8 is respectively connected to the supporting member 1, the first side plate 2 and the second side plate 3 to form a closed space; the battery cell assembly 9 is arranged on the supporting member 1, and the battery cell assembly 9 is located in the closed space; by using the supporting member 1 to support the battery cell assembly 9, and respectively providing the first limiting groove 11 and the second limiting groove 12 at both ends of the supporting member 1, and then the first clamping portion 21 of the first side plate 2 is clamped into the first limiting groove 11 , so that the first side plate 2 is stably mounted on the supporting member 1; and the second clamping portion 31 of the second side plate 3 is clamped into the second limiting groove 12, so that the second side plate 3 is stably mounted on the supporting member 1; the battery device provides sufficient mechanical strength to protect the battery monomer assembly 9 through the clamping of the supporting member 1 with the first side plate 2 and the second side plate 3 respectively, while reducing the time and complexity required for the traditional bolt or welding connection method when connecting the first side plate 2, the second side plate 3 and the supporting member 1, and has the advantages of simple assembly operation, high assembly efficiency and high connection stability.

[0091] In one embodiment, a groove 13 is provided on the supporting member 1, and a first limiting protrusion 14 and a second limiting protrusion 15 are provided in the groove 13, and the first limiting protrusion 14 and the second limiting protrusion 15 are respectively located at opposite ends of the groove 13; a first limiting groove 11 is formed between the first limiting protrusion 14 and an inner wall of one side of the groove 13, and a second limiting groove 12 is formed between the second limiting protrusion 15 and an inner wall of the groove 13 on a side away from the first limiting protrusion 14.

[0092] By forming a groove 13 on the supporting member 1 for accommodating the battery cell assembly 9, the groove 13 provides an installation positioning function for the battery cell assembly 9, and the design of the groove 13 enhances the structural strength of the supporting member 1, making the entire battery device more solid and able to withstand greater mechanical stress; and the first limiting protrusion 14 and the second limiting protrusion 15 are respectively located at opposite ends of the groove 13, so that a first limiting groove 11 is formed between the first limiting protrusion 14 and the inner wall of one side of the groove 13, providing a positioning and fixing structure for the installation of the first side plate 2 and the supporting member 1; and by forming a second limiting groove 12 between the second limiting protrusion 15 and the inner wall of one side of the groove 13 away from the first limiting protrusion 14, a positioning and fixing structure is provided for the installation of the second side plate 3 and the supporting member 1. During the assembly process, the first clamping portion 21 of the first side plate 2 is clamped into the first limiting groove 11, and the second clamping portion 31 of the second side plate 3 is clamped into the second limiting groove 12, which not only improves the assembly efficiency, but also enhances the structural stability of the entire battery device.

[0093] In one embodiment, see Figure 4 , Figure 7The battery device further includes a first locking member 4 , one end of which passes through the first limiting protrusion 14 and is detachably connected to the first side plate 2 ; the first locking member 4 is used to lock the first side plate 2 onto the first limiting protrusion 14 .

[0094] By adding the first locking member 4, and making the first locking member 4 pass through the first limiting protrusion 14 and realize a detachable connection with the first side plate 2, and using the first locking member 4 to realize a locking connection between the first side plate 2 and the first limiting protrusion 14, the strength of the connection structure between the first side plate 2 and the supporting member 1 can be enhanced, thereby enhancing the stability of the battery device; at the same time, it is convenient to quickly disassemble the first side plate 2 and the supporting member 1 when necessary, and to maintain and repair the battery device. As an example, the first locking member 4 can be a bolt, which is a commonly used fastener that can provide stable shear and bending bearing capacity in high-strength bolt connections of steel structures; the use of bolts can replace traditional welding connections, and has the advantages of fast construction speed, reliable quality, and low cost. Therefore, using bolts as the first locking member 4 in the battery device can provide a connection method that is both firm and easy to disassemble, which helps to improve the stability and maintainability of the battery device.

[0095] It should be noted that a plurality of first locking members 4 can be provided along the length direction of the first limiting protrusion 14 (i.e., the length direction of the first limiting groove 11), which can more evenly distribute the stress at the connection, thereby improving the stability and bearing capacity of the overall structure, and helping to prevent structural damage caused by local stress concentration. Using a plurality of first locking members 4 can also increase the rigidity of the structure and reduce the relative displacement between the first side plate 2 and the supporting member 1.

[0096] In one embodiment, see Figure 4 , Figure 7 The battery device further includes a second locking member 5 , one end of which passes through the second limiting protrusion 15 and is detachably connected to the second side plate 3 ; the second locking member 5 is used to lock the second side plate 3 onto the second limiting protrusion 15 .

[0097] Similarly, by adding a second locking member 5, and making the second locking member 5 pass through the second limiting protrusion 15 and realize a detachable connection with the second side plate 3, and using the second locking member 5 to realize a locking connection between the second side plate 3 and the second limiting protrusion 15, the strength of the connection structure between the second side plate 3 and the supporting member 1 can be enhanced, thereby enhancing the stability of the battery device; at the same time, it is convenient to quickly disassemble the second side plate 3 and the supporting member 1 when necessary, and to maintain and repair the battery device. As an example, the second locking member 5 can be bolted or rivet, which can replace the traditional welding connection, and has the advantages of fast construction speed, reliable quality, and low cost.

[0098] Correspondingly, a plurality of second locking members 5 can be provided along the length direction of the second limiting protrusion 15 (i.e., the length direction of the second limiting groove 12), which can more evenly distribute the stress at the connection, thereby improving the stability and bearing capacity of the overall structure, and helping to prevent structural damage caused by local stress concentration. Using a plurality of second locking members 5 can also increase the rigidity of the structure and reduce the relative displacement between the second side plate 3 and the supporting member 1.

[0099] In one embodiment, a first mounting hole 141 is provided on the first limiting protrusion 14 , and a second mounting hole is provided on the first side plate 2 ; one end of the first locking member 4 passes through the first mounting hole 141 and is threadedly connected to the second mounting hole.

[0100] The first locking component 4 is a key component for realizing the connection between the first side panel 2 and the first limiting protrusion 14, wherein one end of the first locking component 4 passes through the first mounting hole 141 of the first limiting protrusion 14 and is threadedly connected with the second mounting hole on the first side panel 2; the first locking component 4 not only provides a strong fixing force, but also allows easy disassembly when necessary, which is convenient for maintenance and replacement.

[0101] In one embodiment, the second limiting protrusion 15 is provided with a third mounting hole 151 , the second side plate 3 is provided with a fourth mounting hole 32 , and one end of the second locking member 5 passes through the third mounting hole 151 and is threadedly connected to the fourth mounting hole 32 .

[0102] Similarly, the second locking member 5 is a key component for connecting the second side plate 3 with the second limiting protrusion 15, wherein one end of the second locking member 5 passes through the third mounting hole 151 of the second limiting protrusion 15 and is threadedly connected with the fourth mounting hole 32 on the second side plate 3; the first locking member 4 not only provides a strong fixing force, but also allows easy disassembly when necessary, which is convenient for maintenance and replacement. According to different load conditions and use environments, the number and distribution of the first locking member 4 and the second locking member 5 can be adjusted to meet different structural requirements.

[0103] In one embodiment, see Figures 5 and 6 A first avoidance groove 142 is formed on the first limiting protrusion 14 , and one end of the first locking member 4 away from the first side plate 2 is located in the first avoidance groove 142 .

[0104] Among them, a first avoidance groove 142 is added to the first limiting protrusion 14, and one end of the first locking component 4 away from the first side plate 2 is located in the first avoidance groove 142; the first avoidance groove 142 is provided with a first groove wall on the side facing the first side plate 2, and a first mounting hole 141 is provided on the first groove wall. The first locking component 4 passes through the first mounting hole 141, and a part of the first locking component 4 is located in the first avoidance groove 142, and another part of the first locking component 4 passes through the third mounting hole 151 and extends into the fourth mounting hole 32, so as to ensure that the first locking component 4 will not conflict with other components during installation and use, thereby reducing possible wear and damage, and at the same time, the first locking component 4 will not occupy additional space or affect the overall layout of the battery device.

[0105] In one embodiment, see Figures 5 and 6 A second avoidance groove 152 is provided on the second limiting protrusion 15 , and one end of the second locking member 5 away from the second side plate 3 is located in the second avoidance groove 152 .

[0106] Similarly, by adding a second avoidance groove 152 on the second limiting protrusion 15, and making the end of the second locking member 5 away from the second side plate 3 be located in the second avoidance groove 152; the second avoidance groove 152 is provided with a second groove wall on the side facing the second side plate 3, and the third mounting hole 151 is provided on the second groove wall, the second locking member 5 passes through the third mounting hole 151, and a part of the second locking member 5 is located in the second avoidance groove 152, and the other part of the second locking member 5 passes through the fourth mounting hole 32 and extends into the fifth mounting hole 143, so as to ensure that the second locking member 5 will not conflict with other components during installation and use, thereby reducing possible wear and damage, and at the same time, the second locking member 5 will not occupy additional space or affect the overall layout of the battery device. As an example, during the installation of the battery cell, the exposed bolt head may interfere with the placement of the battery cell assembly 9, so by adding the first avoidance groove 142 and the second avoidance groove 152, the protrusion of the bolt head can be avoided, ensuring the smooth installation of the battery cell assembly 9.

[0107] In one embodiment, see Figure 6 , Figure 8 , Fig. 9 A fifth mounting hole 143 is also provided on the first limiting protrusion 14; a first end plate 91 and a second end plate 92 are respectively provided at both ends of the battery cell assembly 9, and the fifth mounting hole 143 is used for detachable connection with the first end plate 91; a sixth mounting hole 153 is provided on the second limiting protrusion 15, and the sixth mounting hole 153 is used for detachable connection with the second end plate 92.

[0108] The battery cell assembly 9 is composed of a plurality of battery cells arranged and fixed to form an independent module, wherein the first end plate 91 and the second end plate 92 are provided at both ends of the battery cell assembly 9 along the arrangement direction; wherein, when the battery cell assembly 9 is installed in the box, the first end plate 91 and the second end plate 92 are used to connect with the box; specifically, by adding a fifth mounting hole 143 on the first limiting protrusion 14, and providing a seventh mounting hole 911 corresponding to the position of the fifth mounting hole 143 on the first end plate 91, that is, the fifth mounting hole 143 and the seventh mounting hole 911 are coaxially arranged; then, by using the third locking member, one end of the third locking member passes through the seventh mounting hole 911 of the first end plate 91 and is threadedly connected to the fifth mounting hole 143 of the first limiting protrusion 14, so that the first limiting protrusion 14 can be connected with the battery cell assembly The first end plate 91 of 9 is detachably connected, and a sixth mounting hole 153 is added to the second limiting protrusion 15, and an eighth mounting hole 921 corresponding to the position of the sixth mounting hole 153 is provided on the second end plate 92, that is, the sixth mounting hole 153 is coaxially arranged with the eighth mounting hole 921; then, by using the fourth locking member 101, one end of the fourth locking member 101 is passed through the eighth mounting hole 921 of the second end plate 92 and is threadedly connected to the sixth mounting hole 153 of the second limiting protrusion 15, so that the second limiting protrusion 15 can be detachably connected to the second end plate 92 of the battery cell assembly 9; the installation stability of the battery cell assembly 9 can be improved, the fixation and safety of the battery during operation can be ensured, and the battery cell assembly 9 can be quickly disassembled or replaced when necessary, thereby improving the maintenance and upgrade efficiency of the battery device.

[0109] As an example, a plurality of fifth mounting holes 143 may be provided on the first limiting protrusion 14, a plurality of seventh mounting holes 911 may be provided on the first end plate 91, and the setting position and setting number of the seventh mounting holes 911 correspond to the fifth mounting holes 143; and a plurality of sixth mounting holes 153 may be provided on the second limiting protrusion 15, a plurality of sixth mounting holes 153 may be provided on the second limiting protrusion 15, a plurality of eighth mounting holes 921 may be provided on the second end plate 92, and the setting position and setting number of the eighth mounting holes 921 correspond to the sixth mounting holes 153; it can not only improve the strength of the connection structure between the battery cell assembly 9 and the supporting member, but also help prevent structural damage caused by local stress concentration, so as to ensure that the battery device can operate stably for a long time. At the same time, the fifth mounting hole 143 and the sixth mounting hole 153 are respectively used to connect with the two sides of the battery cell assembly 9, which can further improve the installation stability of the battery cell assembly 9, and the battery cell assembly 9 can be quickly disassembled or replaced when necessary, thereby improving the maintenance and upgrade efficiency of the battery device.

[0110] In one embodiment, see Figure 5 The first limiting protrusion 14, the second limiting protrusion 15 and the supporting member 1 are an integrally formed structure.

[0111] In order to improve the stability of the structure and reduce the number of assembly steps, the first limiting protrusion 14, the second limiting protrusion 15 and the supporting member 1 are set as an integrally formed structure, and all key parts are formed through a one-time manufacturing process, which reduces the connection points between the components, and the integrity and continuity of the structure are guaranteed, which helps to disperse stress when subjected to external forces and reduce the risk of structural failure; and because no additional parts are required for connection, the manufacturing and assembly process is simplified. As an example, the first limiting protrusion 14, the second limiting protrusion 15 and the supporting member 1 can be formed into an integrated structure through related processes such as casting molding and die-casting molding, and the most suitable molding technology can be selected according to production conditions.

[0112] In addition, both ends of the first limiting protrusion 14 extend to the side walls of the groove 13, and both ends of the second limiting protrusion 15 extend to the side walls of the groove 13, which helps to disperse the force, reduce local stress concentration, and enhance the structural stability of the entire battery device.

[0113] In one embodiment, a first adhesive layer is disposed between the outer surface of the first clamping portion 21 and the inner wall of the first limiting groove 11 .

[0114] In the above structure, the first side plate 2 is stably mounted on the supporting member 1 by inserting the first clamping portion 21 of the first side plate 2 into the first limiting groove 11 and utilizing the first adhesive layer between the outer surface of the first clamping portion 21 and the inner wall of the first limiting groove 11; the clamping of the first side plate 2 and the first limiting groove 11 and the cooperation of the first adhesive layer form a stable sandwich structure; it not only provides sufficient mechanical strength to protect the battery cell assembly 9, but also reduces the time and complexity required for connecting the first side plate 2 and the supporting member 1 using traditional bolts or welding.

[0115] In one embodiment, a second adhesive layer is provided between the outer surface of the second clamping portion 31 and the inner wall of the second limiting groove 12 .

[0116] In the above structure, the second side plate 3 is stably mounted on the supporting member 1 by inserting the second clamping portion 31 of the second side plate 3 into the second limiting groove 12 and utilizing the second adhesive layer between the outer surface of the second clamping portion 31 and the inner wall of the second limiting groove 12; the clamping of the second side plate 3 with the second limiting groove 12 and the cooperation of the second adhesive layer form a stable sandwich structure; it not only provides sufficient mechanical strength to protect the battery cell assembly 9, but also reduces the time and complexity required for connecting the second side plate 3 with the supporting member 1 by using traditional bolts or welding.

[0117] The first adhesive layer and the second adhesive layer are both made of structural adhesive, which is used to replace traditional connection forms such as welding, riveting, and bolting. The structural adhesive can withstand large loads and has the characteristics of aging resistance, fatigue resistance, and corrosion resistance, and has stable performance within the expected service life; the first adhesive layer and the second adhesive layer can respectively make the stress distribution of the joint surface of the first clamping part 21 and the first limiting groove 11, the second clamping part 31 and the second limiting groove 12 uniform, which is conducive to reducing thermal effects and installation deformation. As an example, the structural adhesive includes epoxy resin adhesive, polyurethane adhesive, acrylate adhesive, silicone adhesive and other types.

[0118] In one embodiment, see Figure 7 The width of the first limiting groove 11 gradually increases from the bottom to the groove opening; the width change of the first clamping portion 21 is adapted to the width change of the first limiting groove 11.

[0119] The width of the first limiting groove 11 gradually increases from the bottom to the notch, that is, it has a trapezoidal feature; in order to make the first clamping portion 21 adapt to the width change of the first limiting groove 11, the first clamping portion 21 on the first side plate 2 is also provided with a corresponding width change, ensuring that the first clamping portion 21 can be smoothly inserted into the first limiting groove 11; and the purpose of gradual locking can be achieved during the process of the first clamping portion 21 being inserted into the first limiting groove 11, thereby improving the stability and reliability of the connection between the first clamping portion 21 and the first limiting groove 11. When the first clamping portion 21 is inserted into the first limiting groove 11, due to the gradual increase in the width of the first limiting groove 11, the first clamping portion 21 can be gradually locked in the first limiting groove 11 to prevent accidental falling off or displacement; therefore, through the matching of the first limiting groove 11 and the first clamping portion 21, an effective insertion and locking mechanism is formed.

[0120] In one embodiment, see Figure 7 , the width of the second limiting groove 12 gradually increases from the bottom to the groove opening; the width change of the second clamping portion 31 is adapted to the width change of the second limiting groove 12 .

[0121] Similarly, the width of the second limiting groove 12 gradually increases from the bottom to the notch, that is, it has a trapezoidal feature; in order to make the second clamping portion 31 adapt to the width change of the second limiting groove 12, the second clamping portion 31 on the second side plate 3 is also provided with a corresponding width change, ensuring that the second clamping portion 31 can be smoothly inserted into the second limiting groove 12; and the purpose of gradual locking can be achieved during the insertion of the second clamping portion 31 into the second limiting groove 12, thereby improving the stability and reliability of the connection between the second clamping portion 31 and the second limiting groove 12. When the second clamping portion 31 is inserted into the first limiting groove 11, due to the gradual increase in the width of the second limiting groove 12, the second clamping portion 31 can be gradually locked in the second limiting groove 12 to prevent accidental falling off or displacement; therefore, an effective insertion and locking mechanism is formed through the matching of the second limiting groove 12 and the second clamping portion 31.

[0122] In addition, although the connection between the first clamping portion 21 and the first limiting groove 11 and the connection between the second clamping portion 31 and the second limiting groove 12 are relatively firm, when it is necessary to maintain or replace the first side plate 2 or the second side plate 3, the structure with gradually changing width can still be quickly disassembled. The first clamping portion 21 or the second clamping portion 31 can be easily removed by simply reversing the operation, so as to achieve replacement of the first side plate 2 or the second side plate 3.

[0123] In one embodiment, see Figure 7 The bottom edge of the first limiting groove 11 and the bottom edge of the second limiting groove 12 are both provided with inner chamfers, and the end of the first clamping portion 21 and the end of the second clamping portion 31 are both provided with outer chamfers, and the inner chamfers and the outer chamfers match each other.

[0124] In order to improve the matching accuracy and assembly convenience between the first side plate 2 and the supporting member 1, and between the second side plate 3 and the supporting member 1, an inner chamfer is provided at the bottom edge of the first limiting groove 11 and the second limiting groove 12, and an outer chamfer is provided at the end of the first clamping portion 21 and the second clamping portion 31, so that the first clamping portion 21 can be more easily inserted into the first limiting groove 11, and the second clamping portion 31 can be more easily inserted into the second limiting groove 12, and better guidance is provided during the assembly process, reducing the resistance and damage to the structure during the assembly process. At the same time, the matching of the inner chamfer and the outer chamfer can ensure that the first clamping portion 21 and the first limiting groove 11 or the second clamping portion 31 and the limiting groove are closely matched, reducing the gap or looseness caused by improper assembly, thereby improving the structural stability of the entire battery device. In addition, since a more uniform contact surface is provided between the inner chamfer and the outer chamfer, it is helpful to disperse stress and reduce the risk of local excessive deformation or damage of the first clamping portion 21, the first limiting groove 11, the second clamping portion 31 and the second limiting groove 12.

[0125] In one embodiment, see Figure 3 to Figure 4 , Figure 8 , Fig.10 The supporting member 1 is provided with a first extension portion 16 and a second extension portion 17 on both sides along the length direction of the first limiting groove 11 or the second limiting groove 12; the battery device also includes a first support member 6 and a second support member 7, the first support member 6 is detachably connected to the bottom of the first extension portion 16, and the second support member 7 is detachably connected to the second extension portion 17.

[0126] In order to further enhance the structural stability and supporting capacity of the supporting member 1, by adding the first extension 16 and the second extension 17, the first support member 6 is abutted against the bottom of the first extension 16, and the second support member 7 is abutted against the bottom of the second extension 17, thereby enhancing the structural strength of the supporting member 1, helping to disperse stress when bearing external forces, reducing the risk of structural failure, and improving the stability of the battery device in the vertical direction. As an example, the first support member 6 can adopt the fifth locking member 102 to connect with the first extension 16 by bolts or rivets, and the second support member 7 can adopt the sixth locking member to connect with the second extension 17 by bolts or rivets; the first support member 6 can be connected to the first extension by an adhesive layer. It should be noted that the first extension 16 and the second extension 17 are flange structures arranged at the opening of the groove 13 of the supporting member 1, that is, the first extension 16 and the second extension 17 are an integrally formed structure with the supporting member 1.

[0127] In one embodiment, see Figure 4 The length of the first side plate 2 along the length direction of the first limiting groove 11 is greater than the maximum length of the first clamping portion 21 along the length direction of the first limiting groove 11; the first side plate 2 is provided with a first abutting portion 22 and a second abutting portion 23 on both sides along the length direction of the first limiting groove 11; the first abutting portion 22 abuts against the top of the first extension portion 16, and the second abutting portion 23 abuts against the top of the second extension portion 17.

[0128] The length of the first clamping portion 21 gradually increases along the length direction of the first limiting groove 11, from the end of the first clamping portion 21 close to the bottom of the first limiting groove 11 to the notch direction close to the first limiting groove 11, that is, it has a trapezoidal feature; therefore, the end of the notch of the first clamping portion 21 close to the first limiting groove 11 is the maximum size area of ​​the first clamping portion 21, and the length of the first side plate 2 along the length direction of the first limiting groove 11 is greater than the length of the end of the notch of the first clamping portion 21 close to the first limiting groove 11; in order to enhance the fit between the first side plate 2 and the supporting member 1 and the stability of the overall structure, by providing a first abutting portion 22 and a second abutting portion 23 on both sides of the first side plate 2 along the length direction of the first limiting groove 11 or the second limiting groove 12, the first side plate 2 can be closely matched with the first extension portion 16 and the second extension portion 17 of the supporting member 1 to provide additional support and fixing.

[0129] In one embodiment, see Figure 4 The length of the second side plate 3 along the length direction of the second limiting groove 12 is greater than the maximum length of the second clamping portion 31 along the length direction of the second limiting groove 12; the second side plate 3 is provided with a third abutting portion 33 and a fourth abutting portion 34 on both sides of the length direction of the second limiting groove 12; the third abutting portion 33 abuts against the top of the first extension portion 16, and the fourth abutting portion 34 abuts against the top of the second extension portion 17.

[0130] Similarly, the second clamping portion 31 gradually increases in length along the length direction of the second limiting groove 12, from the end of the second clamping portion 31 close to the bottom of the second limiting groove 12 to the length in the direction of the notch close to the second limiting groove 12, that is, it has a trapezoidal feature; therefore, the end of the second clamping portion 31 close to the notch of the second limiting groove 12 is the maximum size area of ​​the second clamping portion 31, and the length of the first side panel 2 along the length direction of the second limiting groove 12 is greater than the length of the second clamping portion 31 close to the notch of the second limiting groove 12; in order to enhance the fit between the second side panel 3 and the supporting member 1 and the stability of the overall structure, a third abutting portion 33 and a fourth abutting portion 34 are respectively provided on both sides of the second side panel 3 along the length direction of the first limiting groove 11 or the second limiting groove 12, so that the second side panel 3 can be closely matched with the first extension portion 16 and the second extension portion 17 of the supporting member 1 to provide additional support and fixing.

[0131] In one embodiment, reference Figure 1 , Fig.11 , Fig.12 The box cover 8 includes a top plate 81, a third side plate 82 and a fourth side plate 83, and the opposite sides of the top plate 81 are respectively connected to the third side plate 82 and the fourth side plate 83, one end of the top plate 81 is connected to an end of the first side plate 2 away from the supporting member 1, and the other end of the top plate 81 is connected to an end of the second side plate 3 away from the supporting member 1; the third side plate 82 and the fourth side plate 83 are respectively located at the two ends of the first limiting groove 11 and / or the second limiting groove 12 along the length direction, and the two ends of the third side plate 82 are respectively connected to the first side plate 2 and the second side plate 3; the side of the third side plate 82 away from the top plate 81 is connected to one side of the supporting member 1; the two ends of the fourth side plate 83 are respectively connected to the first side plate 2 and the second side plate 3, and the side of the fourth side plate 83 away from the top plate 81 is connected to the side of the supporting member 1 away from the third side plate 82.

[0132] In order to further protect the battery cell assembly 9 and provide a complete closed space, a box cover 8 is added to cover the support member 1, the first side plate 2 and the second side plate 3, and the box cover 8 is detachably connected to the support member 1, the first side plate 2 and the second side plate 3 through the seventh locking member 103, so that the support member 1, the first side plate 2, the second side plate 3 and the box cover 8 form a closed box to ensure the integrity and airtightness of the battery device, thereby protecting the components inside the battery device from the influence of the external environment, such as preventing the intrusion of dust, moisture and other pollutants. In addition, the box cover 8 also helps to maintain the temperature inside the battery stable, reduce heat loss, and improve the performance and safety of the battery device.

[0133] In one embodiment, see Figure 3 The side of the first side plate 2 away from the supporting member 1 is set as the first side surface 24, and the two sides of the first side plate 2 along the length direction of the first limiting groove 11 or the second limiting groove 12 are set as the second side surface 25 and the third side surface 26; the side of the second side plate 3 away from the supporting member 1 is set as the fourth side surface 35, and the two sides of the second side plate 3 along the length direction of the first limiting groove 11 or the second limiting groove 12 are set as the fifth side surface 36 and the sixth side surface 37; the side of the first support member 6 away from the supporting member 1 is set as the seventh side surface, and the side of the second support member 7 away from the supporting member 1 is set as the eighth side surface 71; the first side surface 24, the second side surface 25, the third side surface 26, the fourth side surface 35, the fifth side surface 36, the sixth side surface 37, the seventh side surface and the eighth side surface 71 are all provided with a sealing layer; the inner wall surface of the box cover 8 abuts against the sealing layer.

[0134] In order to improve the sealing performance of the battery device as a whole and protect the battery cell assembly 9 from the influence of the external environment, the first side plate 2 and the second side plate 3 and each side surface of the first support member 6 and the second support member 7 are designed to be provided with a sealing layer, and the inner wall surface of the box cover 8 is designed to abut against these sealing layers to form a closed protective space, thereby preventing moisture, dust and other external impurities from entering the interior of the battery device, thereby protecting the battery cell assembly 9 and the electrical connection from corrosion and damage, and also helping to maintain a stable environment inside the battery and extend the service life of the battery. The box cover 8 can be detachably connected to the supporting member 1, the first side plate 2 and the second side plate 3 by means of threaded connection, riveting, locking, snap connection, etc., and the sealing connection between the box cover 8 and the supporting member 1, the first side plate 2 and the second side plate 3 can be achieved by providing a sealing layer at the connection.

[0135] In one embodiment, the material of the supporting member 1 includes a thermosetting resin-based composite material.

[0136] The support member 1 is made of a thermosetting resin-based composite material, which not only provides excellent mechanical properties, but also has natural insulation properties. By utilizing the insulation properties of the support member 1 itself, additional insulation surface treatment can be effectively avoided, thereby reducing production costs. Thermosetting resin-based composite materials are composited with thermosetting resin materials and fiber materials, wherein the thermosetting resin material has the characteristics of excellent mechanical strength, heat resistance and chemical corrosion resistance, making the support member 1 suitable for environments that need to withstand mechanical stress and chemical erosion. Fiber materials are added to thermosetting resins to enhance their mechanical properties. The addition of fiber materials can significantly improve the strength and rigidity of the support member 1 while also reducing weight. Therefore, the support member 1 uses a thermosetting resin-based composite material, which can provide excellent strength, rigidity, heat resistance and chemical resistance, so that the support member 1 can remain stable under various environmental conditions while reducing the weight of the overall battery device.

[0137] As an example, the thermosetting resin material may include polyurethane, epoxy resin, phenolic resin, melamine formaldehyde resin, furan resin, etc. The fiber material may include glass fiber, carbon fiber, boron fiber, aramid fiber, silicon carbide fiber, alumina fiber, etc.

[0138] Please refer to Figures 1 to 12In one embodiment of the present application, the battery device includes a box body, a box cover 8 and a battery cell assembly 9. The box body includes a supporting member 1, a first side plate 2 and a second side plate 3. The supporting member 1 is used to support the battery cell assembly 9; the supporting member 1 is provided with a first limiting groove 11 and a second limiting groove 12, and the first limiting groove 11 and the second limiting groove 12 are respectively arranged at both ends of the supporting member 1; one end of the first side plate 2 is provided with a first clamping portion 21, and the first clamping portion 21 is clamped into the first limiting groove 11; one end of the second side plate 3 is provided with a second clamping portion 31, and the second clamping portion 31 is clamped into the second limiting groove 12; the box cover 8 is arranged on a side of the box body away from the supporting member 1, and the box cover 8 is respectively connected to the supporting member 1, the first side plate 2 and the second side plate 3 to form a closed space; the battery cell assembly 9 is arranged on the supporting member 1, and the battery cell assembly 9 is located in the closed space. Secondly, a groove 13 is provided on the supporting member 1, and a first limiting protrusion 14 and a second limiting protrusion 15 are provided in the groove 13. The first limiting protrusion 14 and the second limiting protrusion 15 are respectively located at the opposite ends of the groove 13; a first limiting groove 11 is formed between the first limiting protrusion 14 and an inner wall of one side of the groove 13, and a second limiting groove 12 is formed between the second limiting protrusion 15 and an inner wall of the groove 13 on a side away from the first limiting protrusion 14. Again, the battery device further comprises a first locking member 4, one end of which passes through the first limiting protrusion 14 and is detachably connected to the first side plate 2; and the battery device further comprises a second locking member 5, one end of which passes through the second limiting protrusion 15 and is detachably connected to the second side plate 3; a first mounting hole 141 is provided on the first limiting protrusion 14, and a second mounting hole is provided on the first side plate 2; one end of the first locking member 4 passes through the first mounting hole 141 and is threadedly connected to the second mounting hole; a third mounting hole 151 is provided on the second limiting protrusion 15, and a fourth mounting hole 32 is provided on the second side plate 3, and one end of the second locking member 5 passes through the third mounting hole 151 and is threadedly connected to the fourth mounting hole 32; a first avoiding groove 142 is provided on the first limiting protrusion 14, and one end of the first locking member 4 is away from the first side plate 2 The end is located in the first avoidance groove 142; the first locking member 4 is used to lock the first side plate 2 with the first limiting protrusion 14; the second limiting protrusion 15 is provided with a second avoidance groove 152, and the end of the second locking member 5 away from the second side plate 3 is located in the second avoidance groove 152; the second locking member 5 is used to lock the second side plate 3 with the second limiting protrusion 15; the first limiting protrusion 14 is also provided with a fifth mounting hole 143; the two ends of the battery monomer assembly 9 are respectively provided with a first end plate 91 and a second end plate 92, and the fifth mounting hole 143 is used for detachable connection with the first end plate 91; the second limiting protrusion 15 is provided with a sixth mounting hole 153, and the sixth mounting hole 153 is used for detachable connection with the second end plate 92; the first limiting protrusion 14, the second limiting protrusion 15 and the supporting member 1 are an integrally formed structure.In addition, a first adhesive layer is provided between the outer surface of the first clamping portion 21 and the inner wall of the first limiting groove 11; a second adhesive layer is provided between the outer surface of the second clamping portion 31 and the inner wall of the second limiting groove 12; the width of the first limiting groove 11 gradually increases from the bottom to the slot; the width change of the first clamping portion 21 is adapted to the width change of the first limiting groove 11; the width of the second limiting groove 12 gradually increases from the bottom to the slot; the width change of the second clamping portion 31 is adapted to the width change of the second limiting groove 12; the first limiting groove 1 The bottom edge of the first limiting groove 11 and the bottom edge of the second limiting groove 12 are both provided with inner chamfers, the end of the first clamping portion 21 and the end of the second clamping portion 31 are both provided with outer chamfers, and the inner chamfers and the outer chamfers cooperate with each other; the supporting member 1 is provided with a first extension portion 16 and a second extension portion 17 on both sides along the length direction of the first limiting groove 11 or the second limiting groove 12 respectively; the battery device also includes a first support member 6 and a second support member 7, the first support member 6 is fixedly connected to the bottom of the first extension portion 16, and the second support member 7 is fixedly connected to the bottom of the second extension portion 17. Furthermore, the length of the first side plate 2 along the length direction of the first limiting groove 11 is greater than the maximum length of the first clamping portion 21 along the length direction of the first limiting groove 11; the first side plate 2 is respectively provided with a first abutting portion 22 and a second abutting portion 23 on both sides along the length direction of the first limiting groove 11; the maximum length of the second side plate 3 along the length direction of the second limiting groove 12 is greater than the maximum length of the second clamping portion 31 along the length direction of the second limiting groove 12; the first abutting portion 22 abuts against the top of the first extension portion 16, and the second abutting portion 23 abuts against the top of the second extension portion 17; the second side plate 3 is respectively provided with a third abutting portion 33 and a fourth abutting portion 34 on both sides along the length direction of the first limiting groove 11 or the second limiting groove 12; the third abutting portion 33 abuts against the top of the first extension portion 16, and the fourth abutting portion 34 abuts against the second extension The top of the part 17 abuts; furthermore, the box cover 8 includes a top plate 81, a third side plate 82 and a fourth side plate 83, and the opposite sides of the top plate 81 are respectively connected to the third side plate 82 and the fourth side plate 83, one end of the top plate 81 is connected to an end of the first side plate 2 away from the supporting member 1, and the other end of the top plate 81 is connected to an end of the second side plate 3 away from the supporting member 1; the third side plate 82 and the fourth side plate 83 are respectively located at the two ends of the first limiting groove 11 and / or the second limiting groove 12 along the length direction, and the two ends of the third side plate 82 are respectively connected to the first side plate 2 and the second side plate 3; the side of the third side plate 82 away from the top plate 81 is connected to one side of the supporting member 1; the two ends of the fourth side plate 83 are respectively connected to the first side plate 2 and the second side plate 3, and the side of the fourth side plate 83 away from the top plate 81 is connected to the side of the supporting member 1 away from the third side plate 82.Further, the side of the first side plate 2 away from the supporting member 1 is set as the first side 24, and the two sides of the first side plate 2 along the length direction of the first limiting groove 11 or the second limiting groove 12 are set as the second side 25 and the third side 26; the side of the second side plate 3 away from the supporting member 1 is set as the fourth side 35, and the two sides of the second side plate 3 along the length direction of the first limiting groove 11 or the second limiting groove 12 are set as the fifth side 36 and the sixth side 37; the side of the first support member 6 away from the supporting member 1 is set as the seventh side, and the side of the second support member 7 away from the supporting member 1 is set as the eighth side 71; the first side 24, the second side 25, the third side 26, the fourth side 35, the fifth side 36, the sixth side 37, the seventh side, and the eighth side 71 are all provided with a sealing layer; the inner wall surface of the box cover 8 is in contact with the sealing layer. Finally, the material of the supporting member 1 includes a thermosetting resin-based composite material.

[0139] The present application also proposes an electrical device, which includes a battery device. The specific structure of the battery device refers to the above-mentioned embodiments. Since the electrical device adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0140] The technical solutions described in the embodiments of the present application are applicable to various electrical devices using battery devices, such as electric vehicles, electric toys, electric tools, vehicles, ships and spacecraft, for example, spacecraft include airplanes, rockets, space shuttles and spacecraft, etc.

[0141] For the specific structure of the battery device, please refer to the above embodiments. Since the battery device adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, that is, by using the supporting member 1 to support the battery monomer assembly, and providing the first limiting groove 11 and the second limiting groove 12 at both ends of the supporting member 1, the first side plate 2 is installed on the supporting member 1 by inserting the first clamping portion 21 of the first side plate 2 into the first limiting groove 11, and using the first adhesive layer between the outer surface of the first clamping portion 21 and the inner wall of the first limiting groove 11; and the second clamping portion 31 of the second side plate 3 is inserted into the second limiting groove 12, and using the second adhesive layer between the outer surface of the second clamping portion 31 and the inner wall of the second limiting groove 12, so that the second side plate 3 is installed on the supporting member 1; the battery device forms a stable sandwich structure through the clamping and bonding cooperation of the supporting member 1, the first side plate 2 and the second side plate 3, which not only provides sufficient mechanical strength to protect the battery monomer, but also reduces the time and complexity required for traditional bolts or welding, and has the advantages of simple assembly operation, high assembly efficiency and high connection stability.

[0142] The above description is only an exemplary embodiment of the present application and does not limit the patent scope of the present application. All equivalent structural changes made by using the contents of the present application specification and drawings under the technical concept of the present application, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A battery device, characterized in that: include: A box body, the box body comprising a supporting member, a first side plate and a second side plate, the supporting member is used to support the battery monomer assembly; the supporting member is provided with a first limiting groove and a second limiting groove, the first limiting groove and the second limiting groove are respectively provided at two ends of the supporting member; one end of the first side plate is provided with a first clamping portion, the first clamping portion is clamped into the first limiting groove; A second side plate, wherein a second clamping portion is provided at one end of the second side plate, and the second clamping portion is clamped into the second limiting groove; A box cover, the box cover is arranged on a side of the box body away from the supporting member, and the box cover is respectively connected to the supporting member, the first side plate and the second side plate to form a closed space; A battery cell assembly is arranged on the supporting member, and the battery cell assembly is located in the closed space.

2. The battery device according to claim 1, characterized in that The supporting member is provided with a groove, and the groove is provided with a first limiting protrusion and a second limiting protrusion, and the first limiting protrusion and the second limiting protrusion are respectively located at opposite ends of the groove; the first limiting groove is formed between the first limiting protrusion and an inner wall of one side of the groove, and the second limiting groove is formed between the second limiting protrusion and an inner wall of a side of the groove away from the first limiting protrusion.

3. The battery device according to claim 2, characterized in that: It also includes a first locking member, one end of which passes through the first limiting protrusion and is detachably connected to the first side plate; and / or, It also includes a second locking member, one end of which passes through the second limiting protrusion and is detachably connected to the second side plate.

4. The battery device according to claim 3, characterized in that: The first limiting protrusion is provided with a first mounting hole, and the first side plate is provided with a second mounting hole; one end of the first locking member passes through the first mounting hole and is threadedly connected to the second mounting hole; and / or, The second limiting protrusion is provided with a third mounting hole, the second side plate is provided with a fourth mounting hole, and one end of the second locking member passes through the third mounting hole and is threadedly connected to the fourth mounting hole.

5. The battery device according to claim 3, characterized in that: The first limiting protrusion is provided with a first avoidance groove, and one end of the first locking member away from the first side plate is located in the first avoidance groove; the first locking member is used to lock the first side plate to the first limiting protrusion; and / or, The second limiting protrusion is provided with a second avoidance groove, and one end of the second locking member away from the second side plate is located in the second avoidance groove; the second locking member is used to lock the second side plate to the second limiting protrusion.

6. The battery device according to claim 2, characterized in that: A fifth mounting hole is also provided on the first limiting protrusion; a first end plate and a second end plate are respectively provided at both ends of the battery cell assembly, and the fifth mounting hole is used for detachable connection with the first end plate; a sixth mounting hole is provided on the second limiting protrusion, and the sixth mounting hole is used for detachable connection with the second end plate.

7. The battery device according to claim 2, characterized in that: The first limiting protrusion, the second limiting protrusion and the supporting member are an integrally formed structure.

8. The battery device according to any one of claims 1 to 7, characterized in that: A first adhesive layer is provided between the outer surface of the first clamping portion and the inner wall of the first limiting groove; and / or, A second adhesive layer is provided between the outer surface of the second clamping portion and the inner wall of the second limiting groove.

9. The battery device according to any one of claims 1 to 7, characterized in that: The width of the first limiting groove gradually increases from the bottom to the groove opening; the width change of the first clamping portion is adapted to the width change of the first limiting groove; and / or, The width of the second limiting groove gradually increases from the bottom to the groove opening; the width change of the second clamping portion is adapted to the width change of the second limiting groove.

10. The battery device according to any one of claims 1 to 7, characterized in that: The bottom edge of the first limiting groove and the bottom edge of the second limiting groove are both provided with inner chamfers, and the end of the first clamping portion and the end of the second clamping portion are both provided with outer chamfers, and the inner chamfers match the outer chamfers.

11. The battery device according to any one of claims 1 to 7, characterized in that: The supporting member is provided with a first extension part and a second extension part on both sides along the length direction of the first limiting groove or the second limiting groove respectively; the battery device also includes a first support member and a second support member, the first support member is fixedly connected to the bottom of the first extension part, and the second support member is fixedly connected to the bottom of the second extension part.

12. The battery device according to claim 11, characterized in that The length of the first side plate along the length direction of the first limiting groove is greater than the maximum length of the first clamping portion along the length direction of the first limiting groove; the first side plate is provided with a first abutting portion and a second abutting portion on both sides along the length direction of the first limiting groove, respectively; the first abutting portion abuts against the top of the first extending portion, and the second abutting portion abuts against the top of the second extending portion; and / or, The length of the second side plate along the length direction of the second limiting groove is greater than the maximum length of the second clamping portion along the length direction of the second limiting groove; the second side plate is respectively provided with a third abutting portion and a fourth abutting portion on both sides of the length direction of the second limiting groove; the third abutting portion abuts against the top of the first extension portion, and the fourth abutting portion abuts against the top of the second extension portion.

13. The battery device according to claim 12, characterized in that: The box cover includes a top plate, a third side plate and a fourth side plate, and opposite sides of the top plate are respectively connected to the third side plate and the fourth side plate, one end of the top plate is connected to an end of the first side plate away from the supporting member, and the other end of the top plate is connected to an end of the second side plate away from the supporting member; the third side plate and the fourth side plate are respectively located at the two ends of the first limiting groove and / or the second limiting groove along the length direction, and the two ends of the third side plate are respectively connected to the first side plate and the second side plate; the side of the third side plate away from the top plate is connected to one side of the supporting member; the two ends of the fourth side plate are respectively connected to the first side plate and the second side plate, and the side of the fourth side plate away from the top plate is connected to the side of the supporting member away from the third side plate.

14. The battery device according to claim 13, characterized in that: A side of the first side panel away from the supporting member is set as a first side panel, and both sides of the first side panel along the length direction of the first limiting groove or the second limiting groove are set as a second side panel and a third side panel; a side of the second side panel away from the supporting member is set as a fourth side panel, and both sides of the second side panel along the length direction of the first limiting groove or the second limiting groove are set as a fifth side panel and a sixth side panel; a side of the first supporting member away from the supporting member is set as a seventh side panel, and a side of the second supporting member away from the supporting member is set as an eighth side panel; a sealing layer is provided on the first side panel, the second side panel, the third side panel, the fourth side panel, the fifth side panel, the sixth side panel, the seventh side panel and the eighth side panel; and an inner wall surface of the box cover abuts against the sealing layer.

15. The battery device according to any one of claims 1 to 7, characterized in that: The material of the supporting member includes a thermosetting resin-based composite material.

16. An electrical device, characterized in that: A battery device comprising the battery device as claimed in any one of claims 1 to 15.

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