Battery shell and battery module with same

Abstract

The utility model provides a battery shell and a battery module with the same. Wherein the battery shell is provided with a containing cavity for containing a battery cell and comprises a shell structure, the shell structure is provided with a containing concave part, a first electric connection part and a second electric connection part, the first electric connection part is electrically connected with the second electric connection part, the second electric connection part is used for being electrically connected with electric equipment, and the first electric connection part is located on the inner wall of the containing concave part; the cover body structure covers the accommodating concave part and is provided with a third electric connection part; wherein the third electric connection part and the accommodating concave part are oppositely arranged, so that an accommodating cavity is formed between the third electric connection part and the inner wall of the accommodating concave part in a surrounding manner, and the first electric connection part and the third electric connection part are used for being electrically connected with an electrode of a battery cell. According to the utility model, the problem that the battery cell of the vehicle battery in the prior art is inconvenient to replace is effectively solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of battery for vehicle, concretely relates to a battery case and battery module with same. BACKGROUND

[0002] At present, in order to ensure the operation stability of battery for vehicle, series aluminum bar and the aluminum bar of the output of the electric core of battery for vehicle are usually connected with the electric core by welding to ensure that the connecting part has sufficient reliable connection stability.

[0003] However, the electric core cannot be continuously used after cycle attenuation, and since the bar sheet (series aluminum bar and the aluminum bar of the output of the electric core) and the electric core are mutually welded, the process of disassembling the old electric core and replacing the new electric core is difficult for the staff, which not only seriously affects the work efficiency and labor intensity of the staff, but also makes it difficult to realize the step utilization of the old electric core. UTILITY MODEL CONTENTS

[0004] The main purpose of the utility model is to provide a battery case and battery module with same to solve the problem that the electric core of battery for vehicle is inconvenient to replace in the related art.

[0005] In order to achieve the above purpose, according to one aspect of the utility model, a battery case is provided, which has a containing cavity for containing an electric core, comprising: a shell structure having a containing recess, a first electric connection part and a second electric connection part, the first electric connection part is electrically connected with the second electric connection part, the second electric connection part is used for electrically connecting with a power consumption device, and the first electric connection part is located on the inner wall of the containing recess; a cover structure, which is covered on the containing recess and has a third electric connection part; wherein the third electric connection part is arranged opposite to the containing recess to form the containing cavity by surrounding the inner wall of the containing recess and the cover structure, and the first electric connection part and the third electric connection part are used for electrically connecting with the electrode of the electric core.

[0006] Further, the cover structure comprises a cover body and a third electric connection part, and the third electric connection part is arranged in the cover body; wherein the cover body has a first avoiding gap, the first avoiding gap is located on the surface of the cover body close to the shell structure, and at least part of the third electric connection part is exposed through the first avoiding gap to form the third electric connection part.

[0007] Further, the electrode of the electric core is provided with a connecting column, the cover structure has a first through hole penetrating through the cover body and a first through hole, and the first through hole is used for penetrating the connecting column to make at least part of the connecting column extend out of the containing cavity; wherein the battery case further comprises a first locking part, the first locking part is sleeved on the connecting column and abuts against the outer surface of the cover structure away from the shell structure.

[0008] Further, the cover body has a first sub-passing hole, the first sub-passing hole has a second sub-passing hole, the first sub-passing hole and the second sub-passing hole are in communication to form a first passing hole, the first locking member abuts against the outer surface of the shell structure away from the first sub-passing hole.

[0009] Further, the first locking member is located in the first sub-passing hole, and the battery shell further comprises a first insulating member arranged on the cover structure and blocking the first sub-passing hole.

[0010] Further, the shell structure comprises a shell body having a receiving recess, and a first electrical connecting member arranged in the shell body, the shell body has a second avoiding gap, the second avoiding gap is located on the inner wall of the receiving recess, and at least part of the first electrical connecting member is exposed through the second avoiding gap to form a first electrical connecting part.

[0011] Further, the shell body further has a mounting cavity arranged apart from the receiving recess, and the shell structure further comprises a control element arranged in the mounting cavity; wherein the shell structure further has a fourth electrical connecting part located in the mounting cavity, the fourth electrical connecting part is electrically connected with the control element, and the first electrical connecting part is electrically connected with the fourth electrical connecting part.

[0012] Further, the shell body comprises a main body part having a mounting recess and a receiving recess, and the mounting recess is arranged on the outer surface of the main body part; a cover member is arranged on the main body part, and an installation cavity is formed around at least part of the inner wall of the mounting recess between the cover member and the mounting recess.

[0013] Further, the main body part has a third avoiding gap arranged on the inner wall of the mounting recess; wherein the first electrical connecting member is a plurality of, the plurality of first electrical connecting members are arranged apart along the length direction and / or the width direction of the shell body, and at least part of at least two first electrical connecting members is exposed through the third avoiding gap to form a fourth electrical connecting part.

[0014] Further, the electrode of the battery cell is provided with a connecting column, the shell body further has a second passing hole, the first electrical connecting member has a third passing hole, the second passing hole and the third passing hole are in communication, and the connecting column extends out of the receiving cavity through the second passing hole and the third passing hole; wherein the aperture of the second passing hole is larger than the aperture of the third passing hole, and the battery shell further comprises a second locking member sleeved on the connecting column, the second locking member abuts against the outer surface of the shell structure away from the first electrical connecting member.

[0015] Further, the second locking member is located in the second passing hole, and the battery shell further comprises a second insulating member arranged on the shell structure and blocking the second passing hole.

[0016] Further, the main body part further has a fourth avoiding gap and a fifth avoiding gap, the fourth avoiding gap is arranged on the inner wall of the mounting recess, the fifth avoiding gap is arranged on the outer circumferential surface of the main body part and is spaced apart from the cover part, the shell structure further comprises: a second electrical connecting part arranged in the main body part, at least a part of the second electrical connecting part is exposed through the fourth avoiding gap to form a fifth electrical connecting part, the fifth electrical connecting part is used for electrical connection with the control element, at least another part of the second electrical connecting part is exposed through the fifth avoiding gap to form a second electrical connecting part, the second electrical connecting part is electrically connected with the first electrical connecting part through the control element; and an electrical connecting column arranged on the second electrical connecting part.

[0017] According to another aspect of the present application, a battery module is provided, which comprises a battery shell and a battery cell, the battery cell is arranged in the accommodating cavity of the battery shell, and the battery shell is the battery shell described above.

[0018] According to the technical scheme of the present application, the battery shell has an accommodating cavity for accommodating the battery cell, the shell structure has an accommodating recess, a first electrical connecting part and a second electrical connecting part, the first electrical connecting part is electrically connected with the second electrical connecting part, the second electrical connecting part is used for electrical connection with the electric device, the first electrical connecting part is arranged on the inner wall of the accommodating recess, and the cover structure is arranged on the accommodating recess and has a third electrical connecting part. The third electrical connecting part is arranged opposite to the accommodating recess to form the accommodating cavity around the inner wall of the cover structure and the accommodating recess, and the first electrical connecting part and the third electrical connecting part are used for electrical connection with the electrode of the battery cell. In this way, the present application integrates the conductive part, the shell structure and the cover structure, so that the shell structure itself can form the first electrical connecting part and the second electrical connecting part, and the cover structure itself can form the third electrical connecting part. While realizing the series connection between the plurality of battery cells through the first electrical connecting part and the third electrical connecting part and realizing the current output of the battery module through the second electrical connecting part, the shell structure and the cover structure are used to fix the electrical connecting parts, so that the first electrical connecting part and the third electrical connecting part can be stably connected with the battery cell after the cover structure is arranged, thereby realizing the connection between the battery cell and the electrical connecting parts without welding, and the staff only needs to open the cover structure to replace the battery cell, which greatly reduces the replacement difficulty of the staff, improves the replacement efficiency of the staff, and solves the problem that the battery cell of the vehicle battery is not convenient to replace in the related art. BRIEF DESCRIPTION OF DRAWINGS

[0019] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application and are incorporated in and constitute a part of this application. The embodiments illustrated in the drawings, and their specification, serve to explain the application without imposing on its scope. In the drawings:

[0020] Figure 1A perspective structural schematic view of the battery shell in the embodiment of the battery shell according to the utility model is shown.

[0021] Figure 2 A perspective structural schematic view of the battery shell in the embodiment of the battery shell according to the utility model is shown. Figure 1

[0022] Figure 3 A perspective structural schematic view of the battery shell in the embodiment of the battery shell according to the utility model is shown. Figure 2

[0023] Figure 4 A perspective structural schematic view of the battery shell in the embodiment of the battery shell according to the utility model is shown. Figure 2

[0024] Figure 5 A perspective structural schematic view of the battery shell in the embodiment of the battery shell according to the utility model is shown. Figure 1

[0025] Figure 6 A perspective structural schematic view of the battery shell in the embodiment of the battery shell according to the utility model is shown. Figure 1

[0026] Figure 7 A perspective structural schematic view of the battery shell in the embodiment of the battery shell according to the utility model is shown. Figure 1

[0027] Figure 8 A perspective structural schematic view of the battery shell in the embodiment of the battery shell according to the utility model is shown. Figure 1

[0028] Figure 9 A perspective structural schematic view of the battery shell in the embodiment of the battery shell according to the utility model is shown. Figure 8

[0029] Figure 10 A perspective structural schematic view of the battery shell in the embodiment of the battery shell according to the utility model is shown. Figure 8

[0030] Figure 11 A perspective structural schematic view of the battery shell in the embodiment of the battery shell according to the utility model is shown. Figure 8

[0031] Figure 12 A perspective structural schematic view of the battery shell in the embodiment of the battery shell according to the utility model is shown. Figure 8

[0032] Wherein, the above-mentioned drawing includes the following drawing marks:

[0033] 1, electric core; 101, connecting column;

[0034] ​​​​​​​​​​​10, housing structure; 11, accommodating recess; 12, first electrical connection part; 13, second electrical connection part; 14, housing body; 141, main body part; 142, cover member; 143, second through hole; 15, first electrical connection member; 151, third through hole; 152, first sub electrical connection member; 153, second sub electrical connection member; 16, control element; 17, fourth electrical connection part; 18, second electrical connection member; 181, electrical connection post; 19, fifth electrical connection part;

[0035] 20, cover structure; 21, third electrical connection part; 22, cover body; 221, first sub through hole; 23, third electrical connection member; 231, second sub through hole;

[0036] 30, first locking member; 40, first insulating member; 50, second locking member; 60, second insulating member; 70, communication connector. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative, but not intended to limit the present application and its application or use in any way. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without any creative effort fall within the scope of the present application.

[0038] It should be noted that the terms used herein are only intended to describe specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and it should also be understood that when the terms "comprise" and / or "include" are used in the specification, there is a presence of the features, steps, operations, devices, components and / or combinations thereof.

[0039] The relative arrangement of parts and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless otherwise specified. At the same time, it should be understood that the sizes of the various parts shown in the drawings are not drawn in accordance with the actual proportional relationship for the convenience of description. The known technologies, methods and devices of the related art may not be discussed in detail, but should be considered as part of the authorized description under appropriate circumstances. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, not as a limitation. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0040] As Figures 1 to 12 shown, the battery shell has a receiving cavity for accommodating the battery cell 1, and the battery shell comprises a shell structure 10 and a cover structure 20, the shell structure 10 has a receiving recess 11, a first electrical connection part 12 and a second electrical connection part 13, the first electrical connection part 12 is electrically connected with the second electrical connection part 13, the second electrical connection part 13 is used for electrical connection with the electrical equipment, and the first electrical connection part 12 is located on the inner wall of the receiving recess 11. The cover structure 20 is covered on the receiving recess 11 and has a third electrical connection part 21. Among them, the third electrical connection part 21 is arranged opposite to the receiving recess 11 to form a receiving cavity around between the cover structure 20 and the inner wall of the receiving recess 11, and the first electrical connection part 12 and the third electrical connection part 21 are used for electrical connection with the electrode of the battery cell 1.

[0041] The battery shell has a containing cavity for containing the battery cell 1, the shell structure 10 has a containing recess 11, a first electric connection part 12 and a second electric connection part 13, the first electric connection part 12 is electrically connected with the second electric connection part 13, the second electric connection part 13 is used for electrically connecting with the electric device, the first electric connection part 12 is located on the inner wall of the containing recess 11, and the cover structure 20 is arranged on the containing recess 11 and has a third electric connection part 21. Wherein, the third electric connection part 21 is arranged opposite to the containing recess 11, so as to form the containing cavity by surrounding between the cover structure 20 and the inner wall of the containing recess 11, and the first electric connection part 12 and the third electric connection part 21 are used for electrically connecting with the electrode of the battery cell 1. In this way, the conductive part, the shell structure 10 and the cover structure 20 are actually integrated in the embodiment, so that the shell structure 10 itself can form the first electric connection part 12 and the second electric connection part 13, and the cover structure 20 itself can form the third electric connection part 21. At the same time, the shell structure 10 and the cover structure 20 are used to fix each electric connection part, so as to ensure that the first electric connection part 12 and the third electric connection part 21 can be stably connected with the battery cell 1 after the cover structure 20 is arranged, so that the battery cell 1 and each electric connection part do not need to be connected by welding, and the worker only needs to open the cover structure 20 to replace the battery cell 1. Therefore, the difficulty of replacing the worker is greatly reduced, the replacement efficiency of the worker is improved, and the problem that the battery cell of the vehicle battery is not convenient to replace in the related art is solved.

[0042] In the embodiment, the containing recess 11 is actually cylindrical, which is used for containing the cylindrical battery cell 1.

[0043] It should be noted that the structure of the containing recess 11 is not limited to this, and can be designed according to the actual structure of the battery cell 1.

[0044] In the embodiment, the containing recess 11 is four, and the four containing recesses 11 are arranged along the length direction of the shell structure 10, so that the battery shell can contain four battery cells 1.

[0045] It should be noted that the number of the containing recess 11 is not limited to this, and can be adjusted according to the working condition and use demand. Alternatively, the containing recess 11 is two, or three, or five, or six, or seven, or more.

[0046] In the embodiment, the first electric connection part 12 and the third electric connection part 21 are both four, four first electric connection parts 12 are arranged one by one with four positive poles of four electric cores 1, and four third electric connection parts 21 are arranged one by one with four negative poles of four electric cores 1. Among them, two adjacent first electric connection parts 12 are electrically connected to each other, and the other two adjacent first electric connection parts 12 are electrically connected to each other, and the middle two adjacent third electric connection parts 21 are electrically connected to each other, to form an S-shaped series connection loop between the four first electric connection parts 12, the four third electric connection parts 21 and the four electric cores 1, so as to realize the mutual series connection between the four electric cores 1.

[0047] It should be noted that the number of first electric connection parts 12 and third electric connection parts 21 is not limited to this, and can be adjusted according to the number of electric cores 1.

[0048] As shown in Figure 7 The cover structure 20 includes a cover body 22 and a third electric connection part 23, and the third electric connection part 23 is arranged in the cover body 22. Among them, the cover body 22 has a first avoiding gap, and the first avoiding gap is located on the surface of the cover body 22 close to the shell structure 10. At least part of the third electric connection part 23 is exposed through the first avoiding gap to form the third electric connection part 21. In this way, the above setting makes the formation of the third electric connection part 21 more simple, thereby reducing the processing difficulty of the staff and the processing cost of the cover structure 20.

[0049] Specifically, the cover structure 20 is actually integrally injection molded, so that the third electric connection part 23 is located in the cover body 22.

[0050] In the embodiment, the third electric connection part 23 is actually an aluminum bar, which is in the form of a plate as a whole, and one plate surface of the third electric connection part 23 is exposed to the accommodating cavity to form the third electric connection part 21.

[0051] Specifically, the two ends of the third electric connection part 23 in the form of a plate are respectively provided with a third electric connection part 21 to form two adjacent and electrically connected third electric connection parts 21.

[0052] In the embodiment, a flange is arranged on the outer circumferential surface of the cover body 22, and when the cover body 22 is covered on the shell structure 10, part of the cover body 22 will extend into the accommodating recess 11. At the same time, the flange is limited and stopped by the outer surface of the shell structure 10 close to the cover body 22, and the staff can install fasteners on the flange and the shell structure 10 to realize the fixation between the shell structure 10 and the cover structure 20.

[0053] Optionally, the fastener is a bolt.

[0054] As shown in Figures 1 to 3As shown, the electrode of the battery cell 1 is provided with a connecting post 101, and the cover structure 20 has a first through hole penetrating through the cover body 22 and the third electric connecting piece 23, and the first through hole is used for penetrating the connecting post 101, so that at least part of the connecting post 101 extends out of the accommodating cavity through the first through hole. The battery shell further comprises a first locking piece 30, which is sleeved on the connecting post 101 and abuts against the outer surface of the cover structure 20 away from the shell structure 10. In this way, the cover structure 20 and the battery cell 1 are further fixed by the first locking piece 30, so as to improve the connection stability between the battery cell 1 and the third electric connecting piece 23, and further improve the operation stability of the battery module.

[0055] Optionally, the first locking piece 30 is a bolt.

[0056] As shown in the drawings, Figures 1 to 3 the cover body 22 has a first sub-through hole 221, and the third electric connecting piece 23 has a second sub-through hole 231, the first sub-through hole 221 and the second sub-through hole 231 are in communication to form the first through hole, and the first locking piece 30 abuts against the outer surface of the third electric connecting piece 23 away from the shell structure 10. Among them, the aperture of the first sub-through hole 221 is larger than the aperture of the second sub-through hole 231. In this way, the above-mentioned arrangement of the first sub-through hole 221 and the second sub-through hole 231 enables the first locking piece 30 to abut against the third electric connecting piece 23, that is, the first locking piece 30 can directly lock the third electric connecting piece 23 on the connecting post 101, so as to further improve the electrical connection stability between the battery cell 1 and the third electric connecting piece 21.

[0057] Optionally, the first locking piece 30 is made of conductive material, so as to further improve the electrical connection stability between the third electric connecting piece 23 and the battery cell 1.

[0058] In this embodiment, the first locking piece 30 is located in the first sub-through hole 221, and the battery shell further comprises a first insulating piece 40, which is arranged on the cover structure 20 and blocks the first sub-through hole 221. In this way, the above-mentioned arrangement enables the first locking piece 30 to be located inside the cover body 22 as a whole, so that the outer surface of the cover body 22 is flat and has no protrusions, which facilitates the subsequent installation of the first insulating piece 40 and also makes the appearance of the battery shell more beautiful. At the same time, the first insulating piece 40 can avoid the user from touching the exposed live first locking piece 30, thereby improving the use safety of the battery module.

[0059] In this embodiment, the first insulating piece 40 is an insulating sheet.

[0060] As shown in the drawings, Figure 1 , Figure 2 , Figure 8 and Figure 9As shown in the figures, the shell structure 10 comprises a shell body 14 having the accommodating recess 11 and a first electrical connector 15. The first electrical connector 15 is arranged in the shell body 14, and the shell body 14 has a second avoiding gap on the inner wall of the accommodating recess 11. At least part of the first electrical connector 15 is exposed through the second avoiding gap to form the first electrical connection part 12. In this way, the above arrangement makes the formation of the first electrical connection part 12 simpler and easier to process, thereby reducing the processing difficulty of the staff and the processing cost of the shell structure 10.

[0061] Specifically, the first electrical connector 15 is actually processed inside the shell structure 10 by injection molding.

[0062] In this embodiment, the first electrical connector 15 is an aluminum bar.

[0063] As shown in the figures, Figure 10 and Figure 11 The shell body 14 further has a mounting cavity arranged separately from the accommodating recess 11, and the shell structure 10 further comprises a control element 16 arranged in the mounting cavity. The shell structure 10 further has a fourth electrical connection part 17 in the mounting cavity, the fourth electrical connection part 17 is electrically connected with the control element 16, and the first electrical connection part 12 is electrically connected with the fourth electrical connection part 17. In this way, the above arrangement actually enables the shell structure 10 to further integrate the control element 16. Since the mounting cavity is arranged separately from the accommodating recess 11 (accommodation cavity), the control element 16 can be separated from the battery cell 1, so as to avoid mutual interference between the battery cell 1 and the control element 16 during replacement, further improving the replacement efficiency of the staff. At the same time, the fourth electrical connection part 17 electrically connected with the first electrical connection part 12 can also realize the electrical connection between the control element 16 and the battery cell 1, thereby ensuring that the control element 16 can control the operating state of the battery cell 1.

[0064] In this embodiment, the control element 16 is a related structure of the BMS (Battery Management System), which will not be described here.

[0065] As shown in the figures, Figure 10 and Figure 11 The shell body 14 comprises a main body part 141 and a cover part 142. The main body part 141 has the mounting recess and the accommodating recess 11, and the mounting recess is arranged on the outer surface of the main body part 141. The cover part 142 covers the main body part 141, and the mounting cavity is formed around at least part of the inner wall between the cover part 142 and the mounting recess.

[0066] Optionally, the cover part 142 and the main body part 141 can be connected by a clamping structure, so as to facilitate the staff to disassemble the cover part 142 and overhaul the control element 16.

[0067] As shown in Figure 10 and Figure 11 , the main body 141 has a third avoiding gap, which is arranged on the inner wall of the mounting recess. Among them, the first electrical connecting piece 15 is multiple, and the multiple first electrical connecting pieces 15 are arranged in the length direction and / or the width direction of the shell body 14. At least part of the at least two first electrical connecting pieces 15 is exposed through the third avoiding gap to form the fourth electrical connecting part 17. In this way, the above arrangement of the first electrical connecting piece 15 can realize the series connection between multiple battery cells 1 and also can realize the electrical connection between the battery cell 1 and the control element 16.

[0068] In this embodiment, four first electrical connecting pieces 15 are arranged in the length direction of the shell body 14.

[0069] As shown in Figure 12 , the first electrical connecting piece 15 at both ends is a first sub-electrical connecting piece 152, and the overall structure thereof includes two plate segments connected to each other, and the two plate segments are arranged perpendicular to each other. One plate segment is exposed to the accommodating recess 11 to form the first electrical connecting part 12, and the other plate segment is exposed to the mounting cavity and has multiple connecting protrusions to form the fourth electrical connecting part 17. The connecting protrusions are inserted into the control element 16 to realize electrical connection.

[0070] As shown in Figure 12 , the first electrical connecting piece 15 between the two first sub-electrical connecting pieces 152 is a second sub-electrical connecting piece 153, and the overall structure thereof is only plate-shaped. The two ends of the second sub-electrical connecting piece 153 are respectively provided with the first electrical connecting part 12 to form two adjacent and electrically connected first electrical connecting parts 12.

[0071] It should be noted that the actual structure of the first electrical connecting piece 15 is not limited to this, and can be adjusted according to the number of battery cells 1 to be electrically connected and the structure of the control element 16.

[0072] As shown in Figure 1 , Figure 2 and Figure 4As shown, the electrode of the battery cell 1 is provided with a connecting post 101, the shell body 14 further has a second through hole 143, the first electric connecting piece 15 has a third through hole 151, the second through hole 143 and the third through hole 151 are in communication, and the connecting post 101 extends out of the accommodating cavity through the second through hole 143 and the third through hole 151. Among them, the aperture of the second through hole 143 is larger than the aperture of the third through hole 151, and the battery shell further comprises a second locking piece 50 sleeved on the connecting post 101, and the second locking piece 50 abuts against the outer surface of the shell structure 10 away from the first electric connecting piece 15. In this way, the above-mentioned arrangement of the second through hole 143 and the third through hole 151 enables the second locking piece 50 to directly lock the first electric connecting piece 15 on the connecting post 101, so as to further improve the electrical connection stability between the battery cell 1 and the first electric connecting part 12.

[0073] Optionally, the second locking piece 50 is a bolt.

[0074] Optionally, the second locking piece 50 is made of a conductive material, so as to further improve the electrical connection stability between the first electric connecting piece 15 and the battery cell 1.

[0075] As shown in the figure, Figure 5 The second locking piece 50 is located in the second through hole 143, and the battery shell further comprises a second insulating piece 60, which is arranged on the shell structure 10 and blocks the second through hole 143. In this way, the above-mentioned arrangement enables the second locking piece 50 to be located inside the main body part 141 as a whole, so that the outer surface of the main body part 141 is flat and has no protrusions, which facilitates the subsequent installation of the second insulating piece 60 and also makes the appearance of the battery shell more beautiful. At the same time, the second insulating piece 60 can avoid the user from touching the exposed live second locking piece 50, thereby improving the use safety of the battery module.

[0076] Optionally, the second insulating piece 60 is an insulating sheet.

[0077] As shown in the figure, Figure 9 and Figure 10As shown, the main body 141 further has a fourth avoiding gap and a fifth avoiding gap, the fourth avoiding gap is arranged on the inner wall of the mounting recess, the fifth avoiding gap is arranged on the outer circumferential surface of the main body 141 and is spaced apart from the cover 142, the shell structure 10 further comprises a second electrical connecting member 18 and an electrical connecting column 181, the second electrical connecting member 18 is arranged in the main body 141, at least a part of the second electrical connecting member 18 is exposed through the fourth avoiding gap to form a fifth electrical connecting part 19, the fifth electrical connecting part 19 is used for electrical connection with the control element 16, at least another part of the second electrical connecting member 18 is exposed through the fifth avoiding gap to form a second electrical connecting part 13, the second electrical connecting part 13 is electrically connected with the first electrical connecting part 12 through the control element 16. The electrical connecting column 181 is arranged on the second electrical connecting part 13. In this way, the above-mentioned arrangement on the one hand makes the formation of the fifth electrical connecting part 19 and the second electrical connecting part 13 more simple and easy to process and realize, and on the other hand, since the second electrical connecting part 13 is electrically connected with the first electrical connecting part 12 through the control element 16, the current finally output through the second electrical connecting part 13 passes through the adjustment of the control element 16, thereby improving the electrical performance of the battery module. At the same time, the electrical connecting column 181 can facilitate the connection of the battery module with external electrical equipment.

[0078] In this embodiment, the second electrical connecting member 18 is an aluminum bar.

[0079] In this embodiment, the second electrical connecting member 18 is in a plate shape, a plurality of connecting protrusions are arranged on the plate surface exposed to the mounting cavity, the connecting protrusions are used for being inserted into the control element 16 to realize electrical connection.

[0080] In this embodiment, the shell structure 10 further integrates a communication connector 70.

[0081] As can be seen, the battery shell in this embodiment realizes high integration of various components, that is, while the control element 16 is integrated through the separate mounting cavity of the shell structure 10, the first electrical connecting member 15, the second electrical connecting member 18 and the third electrical connecting member 23 for realizing the series connection of the plurality of battery cells 1 and the electrical connection between the battery cell 1 and the control element 16 are all integrated inside the shell structure 10 and the cover structure 20 through injection molding, so that in the process of disassembling the battery cell 1, the worker only needs to disassemble the cover structure 20, the first locking member 30 and the second locking member 50, without considering the welding problem, and avoiding the problem of increased disassembly difficulty caused by the complex wire arrangement and component interference in part of the battery module, greatly reducing the replacement difficulty of the worker and improving the replacement efficiency of the worker.

[0082] As Figure 1 shown, the application further provides a battery module, which comprises a battery shell and a battery cell 1, the battery cell 1 is arranged in the accommodating cavity of the battery shell, and the battery shell is the above-mentioned battery shell.

[0083] From the above description, it can be seen that the above-mentioned embodiments of the utility model realize the following technical effects:

[0084] The battery shell has a containing cavity for containing the battery cell, the shell structure has a containing recess, a first electric connection part and a second electric connection part, the first electric connection part is electrically connected with the second electric connection part, the second electric connection part is used for electrically connecting with the electric device, the first electric connection part is located on the inner wall of the containing recess, and the cover structure is arranged on the containing recess and has a third electric connection part. Wherein, the third electric connection part is arranged opposite to the containing recess to form the containing cavity around the inner wall of the cover structure and the containing recess, and the first electric connection part and the third electric connection part are used for electrically connecting with the electrode of the battery cell. In this way, the electrically conductive part, the shell structure and the cover structure are integrated in the application, so that the shell structure itself can form the first electric connection part and the second electric connection part, and the cover structure itself can form the third electric connection part. At the same time of realizing the series connection between the plurality of battery cells through the first electric connection part and the third electric connection part and realizing the current output of the battery module through the second electric connection part, the shell structure and the cover structure are used to fix the electric connection parts, so as to ensure that the first electric connection part and the third electric connection part can be stably connected with the battery cell after the cover structure is arranged, so that the battery cell and the electric connection parts do not need to be connected in the welding mode, and the worker only needs to open the cover structure to replace the battery cell, which greatly reduces the replacement difficulty of the worker, improves the replacement efficiency of the worker, and solves the problem that the battery cell of the vehicle battery is not convenient to replace in the related art.

[0085] In the description of the utility model, it is understood that the orientation words such as “front, back, up, down, left, right”, “transverse, vertical, perpendicular, horizontal” and “top, bottom” and the like indicate the orientation or position relationship generally based on the orientation or position relationship shown in the drawings, only for the convenience of describing the utility model and simplifying the description, without making the opposite statement, these orientation words do not indicate and imply that the indicated device or element must have a specific orientation or be constructed and operated in a specific orientation, therefore, it cannot be understood as the limitation of the protection scope of the utility model;The orientation words “inner, outer” refer to the inner and outer of the contour of each component itself.

[0086] For purposes of the description hereinafter, spatial relative terms, such as "above", "below", "upper", "lower", and the like, can be used to describe the relative position of one element or feature to another as illustrated in the figures. It will be understood that the spatial relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "up" other elements or features would then be oriented "below" or "down" the other elements or features. Thus, the exemplary term "above" can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatial relative descriptors used herein interpreted accordingly.

[0087] In addition, it should be noted that the use of "first", "second", and the like words of distinction do not connote any meaning of importance, but are used solely to differentiate one element from another, and are used in the context of this application without implying any specific order, or order of precedence. Accordingly, a first element that follows an operation can be performed before, after, or at the same time as a second element that precedes the operation.

[0088] The preferred embodiments of the present application have been described above with the purpose of enabling not only the best modes of practicing the application known to the inventors at this time, but also of enabling others skilled in the art to utilize the application in various embodiments and with various modifications as are suited to the particular use contemplated. Therefore, the above description is intended to be illustrative, but not restrictive, of the scope of the present application. All patents and patent applications mentioned herein are incorporated by reference in their entirety.

Claims

1. A battery case having a receiving cavity for receiving an electrode group (1), characterized by The battery shell comprises: a shell structure (10) having a receiving recess (11), a first electrical connection portion (12) and a second electrical connection portion (13), the first electrical connection portion (12) being electrically connected with the second electrical connection portion (13), the second electrical connection portion (13) being used for electrical connection with an electric device, and the first electrical connection portion (12) being located on an inner wall of the receiving recess (11); a cover structure (20) covering the receiving recess (11) and having a third electrical connection portion (21); wherein the third electrical connection portion (21) is oppositely arranged with the receiving recess (11) to form a receiving cavity by surrounding between the cover structure (20) and the inner wall of the receiving recess (11), and the first electrical connection portion (12) and the third electrical connection portion (21) are used for electrical connection with electrodes of the battery cell (1).

2. The battery shell according to claim 1, wherein: the cover structure (20) comprises a cover body (22) and a third electrical connection member (23), and the third electrical connection member (23) is arranged in the cover body (22); wherein the cover body (22) has a first avoiding gap on a surface thereof close to the shell structure (10), and at least part of the third electrical connection member (23) is exposed through the first avoiding gap to form the third electrical connection portion (21).

3. The battery case according to claim 2, characterized by a connecting column (101) is arranged at the electrode of the battery cell (1), the cover structure (20) has a first through hole penetrating through the cover body (22) and the third electrical connection member (23), and the first through hole is used for penetrating the connecting column (101) so that at least part of the connecting column (101) extends out of the receiving cavity through the first through hole; wherein the battery shell further comprises a first locking member (30), and the first locking member (30) is sleeved on the connecting column (101) and abuts against an outer surface of the cover structure (20) away from the shell structure (10).

4. The battery shell according to claim 3, wherein: the cover body (22) has a first sub-through hole (221), the third electrical connection member (23) has a second sub-through hole (231), the first sub-through hole (221) and the second sub-through hole (231) are in communication to form the first through hole, and the first locking member (30) abuts against an outer surface of the third electrical connection member (23) away from the shell structure (10); wherein a hole diameter of the first sub-through hole (221) is greater than a hole diameter of the second sub-through hole (231).

5. The battery case of claim 4, wherein, the first locking member (30) is located in the first sub-through hole (221), and the battery shell further comprises: a first insulating member (40) arranged on the cover structure (20) and sealing the first sub-through hole (221).

6. The battery case according to any one of claims 1 to 5, characterized by, the shell structure (10) comprises: a shell body (14) having the receiving recess (11); A first electrical connecting member (15) is arranged in the shell body (14), the shell body (14) has a second avoiding gap on the inner wall of the accommodating recess (11), at least part of the first electrical connecting member (15) is exposed through the second avoiding gap to form the first electrical connecting part (12).

7. The battery case of claim 6, wherein, The shell body (14) further has a mounting cavity arranged apart from the accommodating recess (11), and the shell structure (10) further comprises: A control element (16) arranged in the mounting cavity; The shell structure (10) further has a fourth electrical connecting part (17) in the mounting cavity, the fourth electrical connecting part (17) is electrically connected with the control element (16), and the first electrical connecting part (12) is electrically connected with the fourth electrical connecting part (17).

8. The battery case of claim 7, wherein, The shell body (14) comprises: A main body part (141) having a mounting recess and the accommodating recess (11), the mounting recess is arranged on the outer surface of the main body part (141); A cover member (142) covering the main body part (141), the cover member (142) and at least part of the inner wall of the mounting recess surround to form the mounting cavity.

9. The battery shell according to claim 8, wherein: The main body part (141) has a third avoiding gap arranged on the inner wall of the mounting recess; The first electrical connecting member (15) is a plurality of, the plurality of first electrical connecting members (15) are arranged apart along the length direction and / or the width direction of the shell body (14), and at least part of at least two first electrical connecting members (15) are exposed through the third avoiding gap to form the fourth electrical connecting part (17).

10. The battery case of claim 6, wherein, A connecting column (101) is arranged at the electrode of the battery cell (1), The shell body (14) further has a second through hole (143), the first electrical connecting member (15) has a third through hole (151), the second through hole (143) and the third through hole (151) are in communication, and the connecting column (101) extends out of the accommodating cavity through the second through hole (143) and the third through hole (151); The aperture of the second through hole (143) is larger than the aperture of the third through hole (151), and the battery shell further comprises a second locking member (50) sleeved on the connecting column (101), and the second locking member (50) abuts against the outer surface of the first electrical connecting member (15) away from the shell structure (10).

11. The battery case of claim 10, wherein, The second locking member (50) is located in the second through hole (143), and the battery shell further comprises: A second insulating member (60) arranged on the shell structure (10) and sealing the second through hole (143).

12. The battery case of claim 8, wherein, The main body part (141) further has a fourth avoiding gap and a fifth avoiding gap, the fourth avoiding gap is arranged on the inner wall of the mounting recess, the fifth avoiding gap is arranged on the outer circumferential surface of the main body part (141) and is spaced apart from the cover part (142), and the shell structure (10) further comprises: A second electric connecting part (18) is arranged in the main body part (141), at least a part of the second electric connecting part (18) is exposed through the fourth avoiding gap to form a fifth electric connecting part (19) for electrically connecting with the control element (16), and at least another part of the second electric connecting part (18) is exposed through the fifth avoiding gap to form the second electric connecting part (13) which is electrically connected with the first electric connecting part (12) through the control element (16); An electric connecting column (181) is arranged on the second electric connecting part (13).

13. A battery module, characterized by The battery module comprises a battery shell and a battery cell (1), the battery cell (1) is arranged in a containing cavity of the battery shell, and the battery shell is the battery shell in any one of claims 1 to 12.

Images