Battery box and electric equipment

Abstract

The utility model discloses a battery box and electric equipment, the battery box comprises a box body and a battery assembly, the battery assembly is detachably installed in the box body, the battery assembly comprises a battery cell group and a frame, and the frame is provided with an accommodating cavity for accommodating the battery cell group. According to the battery box disclosed by the utility model, the battery cell group and the frame are assembled into the battery assembly in advance, and then the battery assembly is assembled into the box body, so that the process difficulty of assembling the battery cell group into the box body is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a battery box and electrical equipment. Background Technology

[0002] In related technologies, the battery box has a crossbeam structure, and the crossbeam is pre-welded to the battery box, becoming an integral part of it. The battery cells need to be extruded into groups using extrusion fixtures before being assembled into the box. Due to the small gap between the battery cells and the crossbeams of the battery box, the installation is difficult, the investment cost of process equipment is high, and the assembly efficiency is low. Utility Model Content

[0003] This utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of this utility model is to provide a battery box in which the battery cells and frame are pre-assembled into a battery assembly, and then the battery assembly is assembled into the box body, thereby reducing the technological difficulty of assembling the battery cells into the box body and improving production efficiency.

[0004] This utility model also proposes an electrical device having the above-mentioned battery box.

[0005] A battery box according to a first aspect of the present invention includes: a box body; a battery assembly, the battery assembly being detachably installed in the box body, the battery assembly including a cell assembly and a frame, the frame having a receiving cavity for accommodating the cell assembly.

[0006] According to the battery box of this utility model embodiment, the battery cell pack and frame are pre-assembled into a battery assembly, and then the battery assembly is assembled into the box body, which reduces the process difficulty of assembling the battery cell pack into the box body and improves production efficiency.

[0007] According to some embodiments of the present invention, the frame is interference-fitted with the battery cell assembly.

[0008] According to some embodiments of the present invention, the frame includes a horizontal plate and a side plate. The horizontal plate includes a first horizontal plate and a second horizontal plate, and the side plate includes a first side plate and a second side plate. The first horizontal plate, the first side plate, the second horizontal plate, and the second side plate are connected end to end in sequence. The first horizontal plate and the second horizontal plate are respectively located on both sides of the cell assembly in a first direction, and the first side plate and the second side plate are respectively located on both sides of the cell assembly in a second direction. The first direction is perpendicular to the second direction.

[0009] According to some embodiments of the present invention, the horizontal plate further includes a third horizontal plate, and multiple battery cell groups are provided. The multiple battery cell groups are arranged along the first direction. The third horizontal plate is located between two adjacent battery cell groups, and the two ends of the third horizontal plate along the second direction are respectively connected to the first side plate and the second side plate.

[0010] According to some embodiments of the present invention, the horizontal plate has mounting grooves at both ends along the second direction, and a portion of the side plate is located within the mounting grooves.

[0011] According to some embodiments of the present invention, the end faces of the horizontal plate at both ends along the second direction each include two first end faces and two second end faces. The two first end faces are respectively located on both sides of the mounting groove along the third direction. The second end face is the bottom wall of the mounting groove. The side of the side plate away from the battery pack is the first side face. The first end face and the first side face are coplanar. The first direction, the second direction and the third direction are perpendicular to each other.

[0012] According to some embodiments of this utility model, the side of the horizontal plate away from the battery cell assembly is the second side, and the end faces of the side plate at both ends along the first direction are the third end faces, and the second side and the third end faces are coplanar.

[0013] According to some embodiments of the present invention, the horizontal plate is provided with a mounting post extending toward the side plate, the mounting post is located in the mounting groove, and the side plate is provided with a first positioning hole opposite to the mounting post.

[0014] According to some embodiments of the present invention, the battery box further includes: a fastener, the box body has a second positioning hole opposite to the first positioning hole, and the mounting post passes through the first positioning hole and the second positioning hole and is fixedly connected to the fastener.

[0015] The electrical equipment according to a second aspect of the present invention includes: a battery box according to the first aspect of the present invention.

[0016] According to the embodiments of the present utility model, the electrical equipment, by setting the above-mentioned battery box, pre-assembles the battery cell group and the frame into a battery assembly, and then assembles the battery assembly into the box, which reduces the process difficulty of assembling the battery cell group into the box and improves production efficiency.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0019] Figure 1 This is an exploded view of a battery box according to some embodiments of the present invention;

[0020] Figure 2 yes Figure 1 Exploded view of the battery module;

[0021] Figure 3 yes Figure 1 Diagram showing the assembly of the battery module and the housing.

[0022] Figure label:

[0023] 100. Battery box; 101. Top cover; 102. Fasteners;

[0024] 10. Housing; 11. Second positioning hole;

[0025] 20. Battery assembly; 2. Cell assembly; 21. Cell; 3. Frame; 311. First horizontal plate; 312. Second horizontal plate; 313. Third horizontal plate; 314. Mounting groove; 3151. First end face; 3152. Second end face; 316. Second side face; 317. Mounting post; 321. First side plate; 322. Second side plate; 323. First side face; 324. Third end face; 325. First positioning hole. Detailed Implementation

[0026] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0027] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," and "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] The following is for reference. Figures 1-3 The battery box 100 according to an embodiment of the present utility model is described.

[0030] According to a first aspect embodiment of the present invention, the battery box 100 includes a box body 10 and a battery assembly 20. The battery assembly 20 is detachably installed inside the box body 10, and the box body 10 can protect the battery assembly 20 from external impacts. The battery assembly 20 includes a cell group 2 and a frame 3. The frame 3 has a receiving cavity for accommodating the cell group 2. By directly fixing the cell group 2 into the frame 3, the module structure of the battery is eliminated, and the battery assembly 20 is directly fixed into the box body, which can reduce the number of manufacturing process steps.

[0031] In related technologies, the frame 3 is fixed inside the housing 10, and the battery cell 21 needs to be extruded into a battery module using an extrusion fixture. Simultaneously, the battery module is assembled into the housing 10. Due to the small gap between the battery module and the frame 3 of the housing 10, installation is difficult, resulting in high investment costs for process equipment and low assembly efficiency. This application eliminates the step of extruding the battery cell 21 into a battery module using an extrusion fixture. Instead, the battery cell group 2 and frame 3 are pre-assembled into a battery assembly 20, which is then assembled into the housing 10. This reduces the difficulty of assembling the battery cell group 2 into the housing 10, improves production efficiency, and eliminates the step of assembling the battery assembly 20 into the housing 10 using an extrusion fixture, reducing production costs and further improving production efficiency.

[0032] When the battery cell assembly 2 has a problem and needs to be repaired or replaced, the battery assembly 20 can be removed from the housing 10 to repair or replace the battery cell assembly 2. The detachable battery assembly 20 provides great convenience for removing the battery assembly 20 from the housing 10.

[0033] Battery cell assembly 2 includes multiple battery cells 21, which can be arranged along a first direction (e.g., refer to the attached diagram). Figure 1 There are multiple arrangements in the e1 direction, or along the second direction (for example, refer to the appendix). Figure 1The cells are arranged in multiple columns in the e2 direction, and the frame 3 can be used to fix the cell group 2.

[0034] The battery box 100 also includes a top cover 101, which can be installed on top of the box 10 after the battery assembly 20 is placed inside the box 10 to close the box 10.

[0035] According to the battery box 100 of this utility model embodiment, the battery cell group 2 and the frame 3 are pre-assembled into a battery assembly 20, and then the battery assembly 20 is assembled into the box body 10, which reduces the process difficulty of assembling the battery cell group 2 into the box body 10 and improves production efficiency.

[0036] According to some embodiments of this utility model, refer to Figures 1-2 The frame 3 and the battery cell assembly 2 are interference-fitted. The interference fit method is used to fix the battery cell assembly 2 in the receiving cavity of the frame 3, which makes the assembly method of fixing the battery cell assembly 2 in the frame 3 simple.

[0037] According to some embodiments of this utility model, refer to Figures 1-2 The frame 3 includes a horizontal plate and a side plate. The horizontal plate includes a first horizontal plate 311 and a second horizontal plate 312. The side plate includes a first side plate 321 and a second side plate 322. The first horizontal plate 311, the first side plate 321, the second horizontal plate 312 and the second side plate 322 are connected end to end in sequence. The first horizontal plate 311 is connected between one end of the first side plate 321 and the second side plate 322 in a first direction. The second horizontal plate 312 is connected between the other end of the first side plate 321 and the second side plate 322 in a second direction.

[0038] The first horizontal plate 311 and the second horizontal plate 312 are located on both sides of the first direction of the cell assembly 2, and the first side plate 321 and the second side plate 322 are located on both sides of the second direction of the cell assembly 2, with the first direction perpendicular to the second direction.

[0039] The first horizontal plate 311 and the second horizontal plate 312 are respectively placed on both sides of the cell assembly 2 in the first direction, and the first side plate 321 and the second side plate 322 are respectively placed on both sides of the cell assembly 2 in the second direction. Then, the first horizontal plate 311, the second horizontal plate 312, the first side plate 321 and the second side plate 322 are pressed to the side of the cell assembly 2 using a pressing tool. Then, the first horizontal plate 311, the first side plate 321, the second horizontal plate 312 and the second side plate 322 are fixedly connected, which simplifies the assembly method of the frame 3 and the cell assembly 2.

[0040] According to some embodiments of this utility model, refer to Figures 1-3The horizontal plate also includes a third horizontal plate 313. Multiple battery cell groups 2 are provided and arranged along the first direction. The third horizontal plate 313 is located between two adjacent battery cell groups 2, and the two ends of the third horizontal plate 313 along the second direction are respectively connected to the first side plate 321 and the second side plate 322. The third horizontal plate 313 is used to fix both sides of the battery cell group 2 in the first direction within the frame 3, thereby improving the stability of the frame 3 in fixing the battery cell group 2.

[0041] For example, there are two battery cell groups 2, and one third horizontal plate 313 is located between the two battery cell groups 2 in the first direction.

[0042] According to some embodiments of this utility model, refer to Figures 1-2 The horizontal plate has mounting grooves 314 at both ends along the second direction. Part of the side plate is located in the mounting grooves 314. The mounting grooves 314 can play a role in pre-positioning the side plate and can limit the width of the side plate.

[0043] The horizontal plate includes a first horizontal plate 311, a second horizontal plate 312, and a third horizontal plate 313. Each of the first horizontal plate 311, the second horizontal plate 312, and the third horizontal plate 313 has a mounting groove 314 at both ends along the second direction. The side plate includes a first side plate 321 and a second side plate 322. The ends of the first side plate 321 along the first direction are respectively located in the mounting groove 314 on the same side of the first horizontal plate 311 and the second horizontal plate 312 along the second direction. The middle part of the first side plate 321 is located in the mounting groove 314 on one side of the third horizontal plate 313 along the second direction. The ends of the second side plate 322 along the first direction are respectively located in the mounting groove 314 on the other side of the first horizontal plate 311 and the second horizontal plate 312 along the second direction. The middle part of the second side plate 322 is located in the mounting groove 314 on the other side of the third horizontal plate 313 along the second direction.

[0044] According to some embodiments of this utility model, refer to Figures 1-2 The end faces of the horizontal plate at both ends along the second direction each include two first end faces 3151 and two end faces 3152. The two first end faces 3151 are respectively located along the third direction of the mounting groove (for example, refer to the attached diagram). Figure 1 On both sides of the side plate (in the e3 direction), the second end face 3152 is the bottom wall of the mounting groove 314. The side of the side plate away from the cell assembly 2 is the first side face 323. The first end face 3151 and the first side face 323 are coplanar. When the side plate is installed into the mounting groove 314, the coplanarity of the first end face 3151 and the first side face 323 can prevent the side plate from protruding from the mounting groove 314 along the second direction, which facilitates the assembly of the battery assembly 20 into the housing 10.

[0045] The horizontal plate includes a first horizontal plate 311, a second horizontal plate 312 and a third horizontal plate 313. The end faces of the first horizontal plate 311, the second horizontal plate 312 and the third horizontal plate 313 along the second direction each include two first end faces 3151 and two end faces 3152. The side plate includes a first side plate 321 and a second side plate 322. The sides of the first side plate 321 and the second side plate 322 that are away from the battery cell assembly 2 are both first side faces 323. Part of the first side plate 321 is installed into the mounting groove 314 on one side of the first horizontal plate 311, the second horizontal plate 312 and the third horizontal plate 313 in the second direction. Part of the second side plate 322 is installed into the mounting groove 314 on the other side of the first horizontal plate 311, the second horizontal plate 312 and the third horizontal plate 313 in the second direction. The first end face 3151 is coplanar with the first side face 323, which can prevent the side plate from protruding from the mounting groove 314 along the second direction, and also makes the battery assembly 20 look neater, while facilitating the assembly of the battery assembly 20 into the housing 10.

[0046] According to some embodiments of this utility model, refer to Figures 1-2 The side of the horizontal plate away from the cell assembly 2 is the second side plate 316, and the end faces of the side plate at both ends along the first direction are the third end faces 324. The second side plate 316 and the third end faces 324 are coplanar, which can prevent the side plate from extending out of the mounting groove 314 along the first direction, making it easier for the battery assembly 20 to be assembled into the housing 10.

[0047] The horizontal plates include a first horizontal plate 311, a second horizontal plate 312, and a third horizontal plate 313. The sides of the first horizontal plate 311, the second horizontal plate 312, and the third horizontal plate 313 facing away from the cell assembly 2 are all second side plates 316. The side plates include a first side plate 321 and a second side plate 322. The end faces of the first side plate 321 and the second side plate 322 along the first direction are all third end faces 324. A portion of the first side plate 321 is installed into a mounting groove 314 on one side of the first horizontal plate 311, the second horizontal plate 312, and the third horizontal plate 313 in the second direction. A portion of the second side plate 322 is installed into a mounting groove 314 on the other side of the first horizontal plate 311, the second horizontal plate 312, and the third horizontal plate 313 in the second direction. The second side plate 316 and the third end face 324 are coplanar, which can prevent the side plates from protruding from the mounting groove 314 along the first direction, making the battery assembly 20 look neater and facilitating the assembly of the battery assembly 20 into the housing 10.

[0048] According to some embodiments of this utility model, refer to Figures 1-2The horizontal plate has mounting posts 317 extending toward the side plate. The mounting posts 317 are located in the mounting groove 314. The side plate has a first positioning hole 325 opposite to the mounting posts 317, and the mounting posts 317 pass through the first positioning hole 325. The horizontal plate includes a first horizontal plate 311, a second horizontal plate 312, and a third horizontal plate 313, all of which have mounting posts 317. The side plate includes a first side plate 321 and a second side plate 322, both of which have first positioning holes 325.

[0049] The first horizontal plate 311 and the second horizontal plate 312 are respectively placed on both sides of the cell assembly 2 in the first direction, and the third horizontal plate 313 is placed between the two cell assemblies 2. The first side plate 321 and the second side plate 322 are respectively placed on both sides of the cell assembly 2 in the second direction. The mounting posts 317 of the first horizontal plate 311 along both sides of the first direction are respectively inserted into the first positioning holes 325 of the first side plate 321 and the first positioning holes 325 of the second side plate 322. The mounting posts 317 of the second horizontal plate 312 along both sides of the first direction are respectively inserted into the first positioning holes 325 of the first side plate 321 and the first positioning holes 325 of the second side plate 322. The mounting posts 317 of the third horizontal plate 313 along both sides of the first direction are respectively inserted into the first positioning holes 325 of the first side plate 321 and the first positioning holes 325 of the second side plate 322. The first positioning hole 325 of the first side plate 321 and the first positioning hole 325 of the second side plate 322 are then pressed into the side of the battery cell assembly 2 by a pressing tool. As the battery cell assembly 2 expands, it expands along the first direction. Under the action of the expansion force of the battery cell assembly 2, the first horizontal plate 311 and the second horizontal plate 312 move in the first direction toward a direction away from each other, and at the same time drive the mounting post 317 to move. At this time, the mounting post 317 and the first positioning hole 325 generate a force, making it difficult for the mounting post 317 to move out of the first positioning hole 325, so that the battery cell assembly 2 can be fixed in the frame 3.

[0050] For example, two mounting posts 317 are provided on both sides of the first horizontal plate 311, the second horizontal plate 312 and the third horizontal plate 313 along the second direction. Correspondingly, six first positioning holes 325 are provided on the first side plate 321 and the second side plate 322.

[0051] According to some embodiments of this utility model, refer to Figure 1 , Figure 3 The battery box 100 also includes a fastener 102. The box body 10 has a second positioning hole 11 opposite to the first positioning hole 325. The mounting post 317 passes through the first positioning hole 325 and the second positioning hole 11 and is fixedly connected to the fastener 102. The fastener 102 is located on the outside of the box body 10. The battery assembly 20 can be initially fixed to the box body 10 by the cooperation of the fastener 102 and the mounting post 317.

[0052] For example, the mounting post 317 has external threads, and the fastener 102 is a nut with internal threads, which can be used to fix the battery assembly 20 to the housing 10 in a threaded manner.

[0053] In a specific example, a sealing gasket is provided between the first horizontal plate 311, the second horizontal plate 312 and the third horizontal plate 313 and the housing 10. The sealing gasket is used to seal the gap between the horizontal plate and the housing 10, which can ensure the airtightness of the battery box 100.

[0054] The electrical equipment according to a second aspect of the present invention includes: a battery box 100 according to the first aspect of the present invention described above.

[0055] According to the embodiment of the present utility model, by setting up the battery box 100, the battery cell group 2 and the frame 3 are pre-assembled into a battery assembly 20, and then the battery assembly 20 is assembled into the box 10, which reduces the process difficulty of assembling the battery cell group 2 into the box 10 and improves the production efficiency.

[0056] In the description of this specification, references to terms such as "some embodiments," "optionally," "furthermore," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0057] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery box, characterized in that, include: Box; A battery assembly, detachably mounted within the housing, the battery assembly including a cell assembly and a frame, the frame having a receiving cavity for accommodating the cell assembly; The frame includes a horizontal plate and side plates. The horizontal plate includes a first horizontal plate and a second horizontal plate. The side plates include a first side plate and a second side plate. The first horizontal plate, the first side plate, the second horizontal plate, and the second side plate are connected end to end in sequence. The first horizontal plate and the second horizontal plate are located on both sides of the cell assembly in a first direction. The first side plate and the second side plate are located on both sides of the cell assembly in a second direction. The first direction is perpendicular to the second direction.

2. The battery box according to claim 1, characterized in that, The frame is interference-fitted with the battery cell assembly.

3. The battery box according to claim 1, characterized in that, The horizontal plate also includes a third horizontal plate. The battery cell group is provided in multiple ways. The multiple battery cell groups are arranged along the first direction. The third horizontal plate is located between two adjacent battery cell groups, and the two ends of the third horizontal plate along the second direction are respectively connected to the first side plate and the second side plate.

4. The battery box according to claim 3, characterized in that, The horizontal plate has mounting grooves at both ends along the second direction, and a portion of the side plate is located within the mounting grooves.

5. The battery box according to claim 4, characterized in that, The end faces of the horizontal plate at both ends along the second direction each include two first end faces and two second end faces. The two first end faces are respectively located on both sides of the mounting groove along the third direction. The second end face is the bottom wall of the mounting groove. The side of the side plate away from the battery pack is the first side face. The first end face and the first side face are coplanar. The first direction, the second direction and the third direction are perpendicular to each other.

6. The battery box according to claim 4, characterized in that, The side of the horizontal plate away from the battery cell assembly is the second side, and the end faces of the side plate at both ends along the first direction are the third end faces. The second side and the third end faces are coplanar.

7. The battery box according to claim 4, characterized in that, The horizontal plate is provided with a mounting post extending toward the side plate, the mounting post is located in the mounting groove, and the side plate is provided with a first positioning hole opposite to the mounting post.

8. The battery box according to claim 7, characterized in that, Also includes: The fastener has a second positioning hole opposite to the first positioning hole, and the mounting post passes through the first positioning hole and the second positioning hole and is fixedly connected to the fastener.

9. An electrical appliance, characterized in that, include: The battery box according to any one of claims 1-8.

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