Battery case, battery and electric device

Abstract

The present application relates to the technical field of batteries. Provided are a battery case, a battery and an electric device. The battery case comprises: a plate body provided with a first opening, wherein the plate body is configured to be connected to a casing of the battery; an electrical lead-out member arranged on the side of the plate body away from the casing, wherein the electrical lead-out member has a second opening corresponding to the first opening, and the electrical lead-out member is configured to be electrically connected to a tab of the battery passing through the first opening and the second opening; and an insulating member comprising a first insulating portion, wherein the first insulating portion is arranged between the plate body and the electrical lead-out member, the insulating member has a third opening, which is in communication with the first opening and the second opening, and the first insulating portion is configured to insulate the plate body from the electrical lead-out member. The battery case provided in the present application can reduce the risk of a short circuit in the battery, thereby improving the yield of the battery.

Description

Battery shell, battery and electric device

[0001] The present disclosure claims priority to the Chinese patent application No. 202422005719.6, filed on August 16, 2024, and entitled "Battery shell, battery and electric device", the entire content of which is incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the technical field of battery, in particular to a battery shell, a battery and an electric device. BACKGROUND

[0003] The battery is a commonly used power supply device in electric devices, for example, it can be applied to an electric vehicle as a power source of the electric vehicle.

[0004] The battery mainly includes a shell, a pole core and a cover plate, the shell has an opening, the pole core is arranged in the shell, and the lead-out sheet in the cover plate is welded and connected with the pole lug on the pole core, then the cover plate covers the opening, and the sealing of the cover plate and the shell is realized through laser welding.

[0005] However, the welding slag generated in the welding process of the lead-out sheet and the pole lug in the related technology will fall into the pole core, thereby easily causing internal short circuit of the battery and reducing the yield of the battery. SUMMARY

[0006] The present application provides a battery shell, a battery and an electric device, which are used to solve the technical problem that the welding slag generated in the welding process of the lead-out sheet and the pole lug in the related technology will fall into the pole core, thereby easily causing internal short circuit of the battery and reducing the yield of the battery.

[0007] In order to achieve the above purpose, the embodiments of the present application provide the following technical solutions:

[0008] The first aspect of the embodiments of the present application provides a battery shell, which comprises:

[0009] a shell;

[0010] a plate body having a first opening, the plate body being arranged on the shell;

[0011] an electric lead-out piece arranged on a side of the plate body away from the shell, the electric lead-out piece having a second opening corresponding to the first opening;

[0012] an insulating piece comprising a first insulating part, the first insulating part being arranged between the plate body and the electric lead-out piece, the first insulating part having a third opening communicating the first opening and the second opening, the electric lead-out piece being used to electrically connect with a pole lug of a battery passing through the first opening, the third opening and the second opening;

[0013] The first insulation part is used to insulate the plate body and the electric lead-out piece.

[0014] The battery shell provided by the embodiment of the present application sets the electric lead-out piece on the side of the plate body away from the shell, makes the tab of the battery pass through the first opening on the plate body, the third opening on the first insulation part and the second opening on the electric lead-out piece in sequence, and connects the tab with the electric lead-out piece, so that the tab and the electric lead-out piece are electrically connected outside the shell, thereby reducing the probability that the welding slag generated in the welding process of the electric lead-out piece and the tab enters the interior of the pole core in the shell, reducing the risk of internal short circuit of the battery and improving the yield of the battery.

[0015] In addition, since the tab does not need to be bent for multiple times before being welded with the lead-out piece, the length of the current collector is shortened, the assembly process between the tab and the electric lead-out piece is simplified, and the assembly efficiency of the battery shell is improved.

[0016] In addition, in the thickness direction of the plate body, the first insulation part of the insulation part is arranged between the plate body and the electric lead-out piece, so that the electrical connection short circuit between the plate body and the electric lead-out piece is avoided, and the use safety of the battery is improved.

[0017] On the basis of the above technical solutions, the present application can also be improved as follows.

[0018] In a possible implementation manner, in the thickness direction of the plate body, the orthographic projections of the first opening, the second opening and the third opening at least partially coincide.

[0019] In this way, by making the orthographic projections of the first opening, the second opening and the third opening at least partially coincide in the thickness direction of the plate body, the tab can be guided to pass through the first opening, the second opening and the third opening in the thickness direction of the plate body to electrically connect the electric lead-out piece.

[0020] In a possible implementation manner, in the width direction of the electric lead-out piece, the second opening is located on the middle line of the width direction of the electric lead-out piece.

[0021] Alternatively, the second opening is arranged close to one side of the electric lead-out piece in the width direction.

[0022] In this way, when the part of the tab passing through the second opening is connected with the surface of the electric lead-out piece away from the shell, by arranging the second opening close to one side of the electric lead-out piece in the width direction, the contact area between the tab and the surface of the electric lead-out piece away from the shell can be increased, so that the connection stability between the tab and the electric lead-out piece can be increased.

[0023] In a possible implementation manner, the battery shell further comprises a terminal.

[0024] The terminal is arranged on the side of the electric lead-out piece away from the insulating piece and is electrically connected with the electric lead-out piece.

[0025] In this way, by arranging the electric lead-out piece on the side of the plate body away from the shell and connecting the terminal with the electric lead-out piece on the side of the electric lead-out piece away from the shell, not only the electrical connection between the terminal and the electric lead-out piece is achieved, but also the first insulating part of the insulating piece insulates the plate body from the electric lead-out piece and insulates the terminal from the plate body, thereby reducing the number of components of the battery shell, simplifying the structure of the battery shell and reducing the manufacturing cost of the battery shell and the battery.

[0026] In a possible implementation, the insulating piece further comprises a second insulating part;

[0027] The second insulating part covers the inner edge of the first opening, and the second insulating part has a fourth opening in communication with the third opening and the second opening.

[0028] The second insulating part is configured to insulate the plate body from the tab passing through the fourth opening.

[0029] In this way, by arranging the second insulating part of the insulating piece to cover the inner edge of the second opening and the fourth opening inside the first opening and connecting the tab with the electric lead-out piece through the fourth opening, the third opening and the second opening, the second insulating part insulates the part of the tab inside the fourth opening from the inner wall of the first opening, thereby insulating the tab from the plate body, avoiding short circuit between the battery shell and the tab and improving the safety of the battery.

[0030] In a possible implementation, the insulating piece further comprises a third insulating part:

[0031] The third insulating part is arranged on the side of the plate body facing the shell, and the third insulating part has a fifth opening in communication with the fourth opening.

[0032] The third insulating part is configured to insulate the surface of the plate body facing the shell from the tab.

[0033] In this way, by arranging the third insulating part on the side of the plate body facing the shell, the surface of the plate body facing the shell is insulated from the tab between the plate body and the shell, thereby further improving the insulation effect between the plate body and the tab, improving the practicability of the battery shell and the safety of the battery.

[0034] In a possible implementation, the plate body, the electric lead-out piece and the insulating piece are integrally formed by injection molding.

[0035] In this way, by integrally molding the plate body, the electrical lead-out piece and the insulating piece, the assembly efficiency of the battery shell can be improved, and the assembly efficiency of the battery can be improved.

[0036] In a possible implementation, the insulating piece is a plastic insulating piece, a rubber insulating piece or a ceramic insulating piece.

[0037] In this way, by setting the insulating piece as a plastic insulating piece, a rubber insulating piece or a ceramic insulating piece, the structure of the insulating piece can be simplified, the manufacturing cost of the insulating piece can be reduced, and the manufacturing cost of the battery shell can be reduced.

[0038] In a possible implementation, the side of the electrical lead-out piece away from the plate body has a groove, a groove bottom of the groove is communicated with the second opening, and the groove bottom is used to be connected with the part of the tab that passes through the second opening.

[0039] In this way, by setting the groove on the side of the electrical lead-out piece away from the plate body, and electrically connecting the part of the tab that passes through the second opening with the groove bottom, the height of the battery shell in the thickness direction can be reduced, and the space occupancy of the battery shell in the thickness direction can be reduced.

[0040] In addition, by electrically connecting the part of the tab that passes through the second opening with the groove bottom, the collision, extrusion and friction of other structures on the connection between the tab and the electrical lead-out piece can be reduced, and the connection stability between the electrical lead-out piece and the tab can be improved.

[0041] In a possible implementation, the plate body and the shell are in an integrated structure.

[0042] In this way, the assembly process of the battery shell can be simplified, and the assembly efficiency can be improved.

[0043] A second aspect of the embodiment of the application provides a battery, which comprises:

[0044] a tab, and the battery shell as described above;

[0045] The tab is arranged in the shell of the battery shell, and the tab has a tab on the side facing the mounting port.

[0046] The tab passes through the first opening of the plate body of the battery shell, the third opening of the insulating piece and the second opening of the electrical lead-out piece, and is electrically connected with the electrical lead-out piece.

[0047] The embodiment of the application provides a battery, by using the above-mentioned battery shell, and electrically connecting the electrical lead-out piece of the battery shell with the tab on the tab core, the welding slag can be avoided from falling into the tab core, the probability of short circuit of the tab core can be reduced, and the use safety and yield of the battery can be improved.

[0048] In a possible implementation, the lug comprises:

[0049] an extension section, one end of which is connected to the pole core and the other end of which is arranged in the first opening, the second opening and the third opening;

[0050] a connecting section, which is connected to one end of the extension section away from the pole core and is arranged on the surface of the electric lead-out away from the pole core;

[0051] In this way, the number of bending of the lug can be reduced, the assembly time between the lug and the electric lead-out can be shortened, the space occupied by the lug in the shell can be reduced, and the assembly efficiency of the battery can be improved.

[0052] In a possible implementation, the extension direction of the extension section is perpendicular to the extension direction of the connecting section.

[0053] A third aspect of the embodiments of the present application provides a power consumption device, which comprises a power consumption apparatus and the battery as described above, and the battery is used to provide electric energy for the power consumption apparatus.

[0054] The embodiments of the present application provide a power consumption device, which can reduce the use risk of the power supply process and improve the use safety of the power consumption device by using the above battery to provide electric energy for the power consumption apparatus. BRIEF DESCRIPTION OF DRAWINGS

[0055] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings described below are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort.

[0056] Fig. 1 is a structural schematic diagram of a battery shell provided by the embodiments of the present application;

[0057] Fig. 2 is an exploded view of the front of the plate body, the electric lead-out and the insulating piece of the battery shell provided by the embodiments of the present application;

[0058] Fig. 3 is an exploded view of the back of the plate body, the electric lead-out and the insulating piece of the battery shell provided by the embodiments of the present application;

[0059] Fig. 4 is a top view of the plate body, the electric lead-out and the insulating piece of the battery shell provided by the embodiments of the present application;

[0060] Fig. 5 is a sectional view of the plate body, the electric lead-out and the insulating piece of the battery shell provided by the embodiments of the present application;

[0061] Fig. 6 is a sectional view of a battery provided by the embodiments of the present application.

[0062] Explanation of reference signs: 10-battery shell; 20-shell; 30-pole core; 21-mounting port; 31-tab; 31a-extension section; 31b-connection section; 100-plate body; 110-first opening; 120-limiting groove; 200-electric lead-out piece; 210-second opening; 220-groove; 300-insulating piece; 310-first insulating part; 320-second insulating part; 330-third insulating part; 311-third opening; 321-fourth opening; 331-fifth opening; 400-terminal. DETAILED DESCRIPTION

[0063] As described in the background, the welding slag generated in the process of welding the lead-out tab and the tab will fall into the pole core, thus easily leading to internal short circuit of the battery and reducing the yield of the battery.

[0064] The reason for this problem is that the cover plate in the related art includes a body, a lead-out piece and a terminal, two insulating pieces, the lead-out piece is arranged on the side of the body facing the shell of the battery, the lead-out tab is welded with the tab on the pole core inside the shell, thus the welding slag generated in the process of welding the tab and the lead-out tab will fall into the pole core inside the shell, thus leading to internal short circuit of the pole core and reducing the yield of the battery.

[0065] In addition, since the lead-out piece in the related art is arranged on the side of the body facing the shell, an insulating piece needs to be arranged between the body and the lead-out piece to insulate the body and the lead-out piece. In addition, the terminal is arranged on the side of the body away from the shell, the terminal will pass through the body and be electrically connected with the lead-out tab, thus an insulating piece needs to be arranged between the terminal and the body to insulate the terminal and the body, thus increasing the number of structural components of the battery shell.

[0066] In view of the above technical problems, the embodiments of the present application provide a battery shell, a battery and an electric device, the battery shell is arranged by arranging the electric lead-out piece on the side of the plate body away from the shell, the tab of the battery passes through the first opening on the plate body, the third opening on the first insulating part and the second opening on the electric lead-out piece in sequence, and the tab is connected with the electric lead-out piece, thus the tab and the electric lead-out piece are electrically connected outside the shell, thus the probability of the welding slag generated in the process of welding the electric lead-out piece and the tab entering the pole core inside the shell can be reduced, the risk of internal short circuit of the battery can be reduced, and the yield of the battery can be improved.

[0067] In addition, since the tab does not need to be bent for multiple times and then welded with the lead-out piece, the length of the current collector is shortened, the assembly process between the tab and the electric lead-out piece is simplified, and the assembly efficiency of the battery shell is improved.

[0068] In addition, by arranging the first insulation part of the insulation member between the plate body and the electric lead-out member in the thickness direction of the plate body, the electrical connection short circuit between the plate body and the electric lead-out member can be avoided, and the use safety of the battery is improved.

[0069] In order to make the above-mentioned purposes, features and advantages of the embodiments of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be clearly and completely described 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. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0070] Referring to FIG. 1, the embodiments of the present application provide a battery shell 10, which can include a shell 20, a plate body 100, an electric lead-out member 200 and an insulation member 300. In some embodiments, the plate body 100 can be in an integrated structure with the shell 20. The shell 20 can also have a mounting port 21, and the plate body 100 can be arranged on the mounting port 21 and used to cover the mounting port 21.

[0071] Referring to FIGS. 2 and 3, the plate body 100 has a first opening 110, which communicates two surfaces in the thickness direction (such as the X direction in FIG. 2) of the plate body 100, and the tab 31 of the battery can pass through the first opening 110. The plate body 100 is used to be connected with the shell 20 of the battery. The plate body 100 can be a metal material cover plate, which can be connected with the shell 20 by welding.

[0072] Referring to FIGS. 4 and 5, the electric lead-out member 200 is arranged on the side of the plate body 100 away from the shell 20, and the electric lead-out member 200 has a second opening 210 corresponding to the first opening 110. The first opening 110 and the second opening 210 are communicated, and the electric lead-out member 200 is used to be electrically connected with the tab 31 of the battery passing through the first opening 110 and the second opening 210.

[0073] Referring to FIGS. 5 and 6, in some embodiments, the electric lead-out member 200 can also be a conductive metal member. The tab 31 passes through the first opening 110 and the second opening 210 to reach the surface of the electric lead-out member 200 away from the shell 20, and the part of the tab 31 passing out of the second opening 210 can be connected with the surface of the electric lead-out member 200 away from the shell 20 by welding. At this time, the tab 31 located at the first opening 110, the second opening 210 and the surface of the electric lead-out member 200 away from the shell 20 can be approximately in an "L" shape structure. In this way, the connection area between the electric lead-out member 200 and the tab 31 can be increased, and the connection stability between the electric lead-out member 200 and the tab 31 can be improved.

[0074] The battery shell 10 provided by the embodiments of the present application can reduce the probability that the welding slag generated in the welding process of the electric lead-out piece 200 and the tab 31 enters the interior of the pole core 30 in the shell 20, reduce the risk of internal short circuit of the battery, and improve the yield of the battery.

[0075] In addition, since the tab 31 does not need to be bent for multiple times and then welded with the lead-out piece, the length of the current collector is shortened, the assembly process between the tab 31 and the electric lead-out piece 200 is simplified, and the assembly efficiency of the battery shell 10 is improved.

[0076] Referring to FIGS. 2 and 5, the insulating piece 300 can include a first insulating portion 310 arranged between the plate body 100 and the electric lead-out piece 200, and the insulating piece 300 has a third opening 311 communicating the first opening 110 and the second opening 210, and the tab 31 can pass through the first opening 110, the third opening 311 and the second opening 210 to reach the surface of the electric lead-out piece 200 facing away from the shell 20. The first insulating portion 310 is used to insulate between the plate body 100 and the electric lead-out piece 200.

[0077] In this way, in the thickness direction of the plate body 100, by arranging the first insulating cloth of the insulating piece 300 between the plate body 100 and the electric lead-out piece 200, the electrical connection short circuit between the plate body 100 and the electric lead-out piece 200 can be avoided, and the use safety of the battery is improved.

[0078] In some embodiments, the first opening 110, the second opening 210 and the third opening 311 are all long strip-shaped openings, and the first opening 110, the second opening 210 and the third opening 311 all extend along the length direction (such as the Y direction in FIG. 2) of the plate body 100.

[0079] In this way, by arranging the first opening 110, the second opening 210 and the third opening 311 as long strip-shaped openings, the foil-shaped tab 31 can pass through conveniently, and the assembly and welding process of the battery shell 10 and the tab 31 are facilitated.

[0080] Referring to FIG. 2 and FIG. 5, in some embodiments, the side of the plate body 100 opposite to the electrical lead-out piece 200 has a limiting groove 120, the groove bottom of the limiting groove 120 is in communication with the first opening 110, and the electrical lead-out piece 200 can be arranged in the limiting groove 120 to limit the displacement of the electrical lead-out piece 200 in the horizontal direction perpendicular to the thickness direction of the plate body 100, thereby improving the connection stability between the electrical lead-out piece 200 and the plate body 100.

[0081] The first insulating part 310 of the insulating piece 300 is arranged in the limiting groove 120, and a part of the first insulating part 310 is arranged on the groove bottom of the limiting groove 120 to insulate the part of the plate body 100 corresponding to the groove bottom of the limiting groove 120 from the electrical lead-out piece 200, and a part of the first insulating part 310 is also arranged on the groove wall of the limiting groove 120 to insulate the part of the plate body 100 corresponding to the inner side wall of the limiting groove 120 from the electrical lead-out piece 200.

[0082] Referring to FIG. 5, in some embodiments, the orthographic projections of the first opening 110, the second opening 210 and the third opening 311 at least partially overlap in the thickness direction of the plate body 100 (e.g., the X direction in FIG. 5) to facilitate the tab passing through the first opening 110, the second opening 210 and the third opening 311.

[0083] In other embodiments, the orthographic projections of the first opening 110, the second opening 210 and the third opening 311 can approximately completely overlap in the thickness direction of the plate body 100 (e.g., the X direction in FIG. 5), so that the joint of the first opening 110, the second opening 210 and the third opening 311 is relatively flat, and the tab 31 will not be blocked when passing through the first opening 110, the second opening 210 and the third opening 311 due to the existence of the protrusion at the joint.

[0084] In this way, by making the orthographic projections of the first opening 110, the second opening 210 and the third opening 311 at least partially overlap in the thickness direction of the plate body 100, the tab 31 can be guided to pass through the first opening 110, the second opening 210 and the third opening 311 in the thickness direction of the plate body 100 to electrically connect the electrical lead-out piece 200.

[0085] Referring to FIG. 5, in some embodiments, in the width direction of the electrical lead-out piece 200 (e.g., the Z direction in FIG. 5), the second opening 210 is located on the center line of the width direction of the electrical lead-out piece 200. It should be noted that the center line M is only used to define the relative position of the second opening 210 on the electrical lead-out piece 200, and is not a physical structure.

[0086] In some embodiments, the first opening 110 is disposed away from the center line of the width direction of the electrical lead-out 200 (as shown by the center line M in FIG. 2), or the first opening 110 can be disposed close to one side of the electrical lead-out 200 in the width direction.

[0087] In this way, when the tab 31 is connected to the surface of the electrical lead-out 200 away from the shell 20 through the portion of the tab 31 passing through the second opening 210, by disposing the second opening 210 close to one side of the electrical lead-out 200 in the width direction, the contact area between the tab 31 and the surface of the electrical lead-out 200 away from the shell 20 can be increased, and thus the connection stability between the tab 31 and the electrical lead-out 200 can be increased.

[0088] In some embodiments, if the thickness of the battery is greater than 18 mm, the width of the battery shell 10 can also be greater than 18 mm, and the width of the electrical lead-out 200 can also be greater than 18 mm. In this case, the second opening 210 can be disposed at the center of the width direction of the electrical lead-out 200, and a relatively large connection area between the tab 31 and the surface of the electrical lead-out 200 away from the shell 20 can be ensured.

[0089] If the thickness of the battery is less than 18 mm, the width of the battery shell 10 can also be less than 18 mm, and the width of the electrical lead-out 200 can also be less than 18 mm. In this case, the width of the electrical lead-out 200 can be relatively narrow, and if the first opening 110 is disposed at the center, the connection area between the tab 31 and the surface of the electrical lead-out 200 away from the shell 20 can be relatively small, which can affect the connection stability between the tab 31 and the electrical lead-out 200.

[0090] Referring to FIGS. 2 and 5, in some embodiments, the side of the electrical lead-out 200 away from the plate body 100 has a groove 220, the groove bottom of the groove 220 is connected to the second opening 210, and the groove bottom of the groove 220 is used to be connected to the portion of the tab 31 passing through the second opening 210.

[0091] In this way, by disposing the groove 220 at the side of the electrical lead-out 200 away from the plate body 100, and electrically connecting the portion of the tab 31 passing through the second opening 210 to the groove bottom of the groove 220, the height of the battery shell 10 in the thickness direction can be reduced, and thus the space occupancy of the battery shell 10 in the thickness direction can be reduced.

[0092] In addition, by electrically connecting the portion of the tab 31 passing through the second opening 210 to the groove bottom of the groove 220, the collision, extrusion, and friction of other structures on the connection between the tab 31 and the electrical lead-out 200 can be reduced, and the connection stability between the electrical lead-out 200 and the tab 31 can be improved.

[0093] Referring to FIGS. 2 and 5, in some embodiments, the insulation member 300 can further include a second insulation portion 320 connectable to the first insulation portion 310. The second insulation portion 320 and the first insulation portion 310 can be of an integrated structure, and in some examples, the second insulation portion 320 and the first insulation portion 310 can be separately provided and connected.

[0094] The second insulation portion 320 covers the inner edge of the first opening 110, and has a fourth opening 321 in communication with the third opening 311 and the second opening 210, the fourth opening 321 being located inside the first opening 110, and the fourth opening 321 and the first opening 110 can be coaxially provided. The second insulation portion 320 is configured to insulate the tab 31 passing through the fourth opening 321 from the plate body 100.

[0095] In this way, the second insulation portion 320 of the insulation member 300 can cover the inner edge of the second opening 210, the fourth opening 321 is located inside the first opening 110, and the tab 31 is connected to the electrical lead-out member 200 by passing through the fourth opening 321, the third opening 311 and the second opening 210, and the second insulation portion 320 can insulate the portion of the tab 31 located inside the fourth opening 321 from the inner wall of the first opening 110, thereby achieving insulation between the tab 31 and the plate body 100, avoiding short circuit between the battery shell 10 and the tab 31, and improving the safety of the battery in use.

[0096] Referring to FIGS. 2 and 5, in some embodiments, the insulation member 300 can further include a third insulation portion 330 connectable to the second insulation portion 320, so that the third insulation portion 330 is connected to the first insulation portion 310 through the second insulation portion 320. Alternatively, the third insulation portion 330, the second insulation portion 320 and the first insulation portion 310 can be of an integrated structure.

[0097] The third insulation portion 330 is arranged on the side of the plate body 100 facing the shell 20, and has a fifth opening 331 in communication with the fourth opening 321, and the third insulation portion 330 is configured to insulate the surface of the plate body 100 facing the shell 20 from the tab 31 located between the plate body 100 and the shell 20.

[0098] In this way, by arranging the third insulation portion 330 on the side of the plate body 100 facing the shell 20, the surface of the plate body 100 facing the shell 20 is insulated from the tab 31 located between the plate body 100 and the shell 20, thereby further improving the insulation effect between the plate body 100 and the tab 31, and improving the practicability of the battery shell 10 and the safety of the battery in use.

[0099] In some embodiments, the third opening 311, the fourth opening 321 and the fifth opening 331 can be coincided in the normal projection in the thickness direction of the plate body 100 (X direction in FIG. 5).

[0100] Referring to FIG. 5, in some embodiments, the plate body 100, the electric lead-out piece 200 and the insulating piece 300 can be integrally formed by injection molding.

[0101] In this way, by integrally forming the plate body 100, the electric lead-out piece 200 and the insulating piece 300 by injection molding, the assembly efficiency of the battery shell 10 can be improved, and thus the assembly efficiency of the battery can be improved.

[0102] In other embodiments, the plate body 100, the electric lead-out piece 200 and the insulating piece 300 can also be connected by riveting.

[0103] In some embodiments, the insulating piece 300 can be a plastic insulating piece, a rubber insulating piece or a ceramic insulating piece.

[0104] In this way, by setting the insulating piece 300 as a plastic insulating piece, a rubber insulating piece or a ceramic insulating piece, the structure of the insulating piece 300 can be simplified, the manufacturing cost of the insulating piece 300 can be reduced, and thus the manufacturing cost of the battery shell 10 can be reduced.

[0105] In some embodiments, when the plate body 100, the electric lead-out piece 200 and the insulating piece 300 are integrally formed by injection molding, the insulating piece 300 can be an insulating plastic material for nano-injection molding. When the plate body 100, the electric lead-out piece 200 and the insulating piece 300 are connected by riveting, the insulating piece 300 can be an insulating plastic or rubber material. When the plate body 100, the electric lead-out piece 200 and the insulating piece 300 are connected by welding, the insulating piece 300 can be an insulating ceramic material.

[0106] Referring to FIG. 6, in some embodiments, the battery shell 10 can further include a terminal 400, which is arranged on the side of the electric lead-out piece 200 away from the insulating piece 300 and is electrically connected with the electric lead-out piece 200. The terminal 400 can be connected with the electric lead-out piece 200 by welding. The tab 31 extends to the side of the electric lead-out piece 200 away from the shell 20 and is electrically connected with the electric lead-out piece 200, and the terminal 400 is electrically connected with the electric lead-out piece 200, so that the electric current can be transmitted to the electric lead-out piece 200 through the tab 31, and further transmitted to the terminal 400 by the electric lead-out piece 200.

[0107] In this way, by arranging the electric lead-out piece 200 on the side of the plate body 100 away from the shell 20, and connecting the terminal 400 to the electric lead-out piece 200 directly on the side of the electric lead-out piece 200 away from the shell 20, not only can the electric connection between the terminal 400 and the electric lead-out piece 200 be achieved, but also the first insulation part 310 of the insulation piece 300 can insulate the plate body 100 from the electric lead-out piece 200, and insulate the terminal 400 from the plate body 100, thereby reducing the number of components of the battery shell 10, simplifying the structure of the battery shell 10, and reducing the manufacturing cost of the battery shell 10 and the battery.

[0108] Referring to FIGS. 1 and 6, the application also provides a battery, which can include the pole core 30 and the battery shell 10 described above.

[0109] The shell 20 in the battery shell 10 has a mounting port 21, the pole core 30 is arranged in the shell 20, the side of the pole core 30 facing the mounting port 21 has a tab 31, the tab 31 passes through the first opening 110 of the plate body 100 of the battery shell 10, the third opening 311 of the insulation piece 300, and the second opening 210 of the electric lead-out piece 200, and is electrically connected to the surface of the electric lead-out piece 200 away from the shell 20. The battery shell 10 is covered on the mounting port 21.

[0110] The application provides a battery, which can avoid the welding slag from falling into the pole core 30, reduce the probability of short circuit of the pole core 30, and improve the use safety and yield of the battery by using the battery shell 10 described above and electrically connecting the electric lead-out piece 200 of the battery shell 10 to the tab 31 on the pole core 30.

[0111] In some embodiments, the battery can further include a pole core insulation film and an explosion-proof valve. The pole core insulation film is wrapped on the outer surface of the pole core 30 to insulate the pole core 30 from the shell 20, and the explosion-proof valve can be arranged on the shell 20 to improve the use safety of the battery.

[0112] Referring to FIG. 6, in some embodiments, the tab 31 can include an extension section 31a and a connecting section 31b. One end of the extension section 31a is connected to the pole core 30, and the other end of the extension section 31a passes through the first opening 110, the second opening 210, and the third opening 311. The connecting section 31b is connected to the end of the extension section 31a away from the pole core 30, and the connecting section 31b can be arranged on the surface of the electric lead-out piece 200 away from the pole core 30. The extension direction of the extension section 31a is perpendicular to the extension direction of the connecting section 31b.

[0113] In this way, the number of bending of the tab 31 can be reduced, the assembly time between the tab 31 and the electric lead-out piece 200 can be shortened, the occupied space of the tab 31 in the shell 20 can be reduced, and the assembly efficiency of the battery can be improved.

[0114] The embodiments of the present application also provide a power-using device, which can include a power-using apparatus and the battery as above, and the battery is used to provide power for the power-using apparatus.

[0115] The embodiments of the present application provide a power-using device, which can reduce the use risk of the power supply process and improve the use safety of the power-using device by using the battery as above to provide power for the power-using apparatus.

[0116] In some embodiments, the power-using device can be a vehicle, which can be a new energy vehicle, such as a pure electric vehicle (PEV / BEV), a range extended electric vehicle (REEV), a hybrid electric vehicle (HEV), a fuel cell electric vehicle, or any vehicle with a battery.

[0117] The embodiments or implementations in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts between the embodiments can be referred to each other.

[0118] It should be noted that the terms “in a specific implementation”, “in some embodiments”, “in the present embodiment”, “exemplarily” and the like in the specification mean that the described embodiments can include specific features, structures or characteristics, but not necessarily every embodiment includes the specific features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when a specific feature, structure or characteristic is described in combination with an embodiment, it is within the knowledge of those skilled in the art to realize such feature, structure or characteristic in combination with other embodiments described explicitly or implicitly.

[0119] Generally, the terms should be understood at least partly by the use in the context. For example, at least partly according to the context, the term “one or more” used in the specification can be used to describe any feature, structure or characteristic in the singular sense, or can be used to describe a combination of features, structures or characteristics in the plural sense. Similarly, at least partly according to the context, the terms such as “a” or “said” can be understood to convey the singular usage or the plural usage.

[0120] It should be readily understood that "on," "over," and "above" in the present disclosure are to be interpreted in the broadest context, such that "on" means not only "directly on" but also includes the meaning of "on" with intervening features or layers therebetween, and "over" or "above" includes not only the meaning of "over" or "above" but also the meaning of "over" or "above" with no intervening features or layers therebetween (i.e., directly on).

[0121] In addition, spatially relative terms, such as "beneath", "below", "lower", "above", "upper" and the like, can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. The spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. The devices can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0122] Finally, it should be noted that the above-described embodiments are merely intended for describing and illustrating, not limiting, the technical solutions of the present application; even though the present application has been described in detail with reference to the above-described embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the above-described embodiments, or equivalently replace some or all of the technical features thereof; and such modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A battery housing, characterized by The battery shell comprises: a shell (20); a plate body (100) having a first opening (110), the plate body (100) being arranged in the shell (20); an electrical lead-out piece (200) arranged on a side of the plate body (100) away from the shell (20), the electrical lead-out piece (200) having a second opening (210) corresponding to the first opening (110); an insulating piece (300) comprising a first insulating portion (310), the first insulating portion (310) being arranged between the plate body (100) and the electrical lead-out piece (200), the first insulating portion (310) having a third opening (311) communicating the first opening (110) and the second opening (210), the electrical lead-out piece (200) being configured to electrically connect with a tab (31) of a battery passing through the first opening (110), the third opening (311) and the second opening (210); the first insulating portion (310) being configured to insulate the plate body (100) and the electrical lead-out piece (200).

2. The battery case of claim 1, wherein, In a thickness direction of the plate body (100), the first opening (110), the second opening (210) and the third opening (311) at least partially overlap in orthographic projection.

3. The battery case of claim 2, wherein, In a width direction of the electrical lead-out piece (200), the second opening (210) is located at a center line of the width direction of the electrical lead-out piece (200); alternatively, the second opening (210) is arranged close to one side of the electrical lead-out piece (200) in the width direction.

4. The battery housing of any one of claims 1-3, wherein, The battery shell further comprises a terminal (400); the terminal (400) being arranged on a side of the electrical lead-out piece (200) away from the insulating piece (300) and being electrically connected with the electrical lead-out piece (200).

5. The battery case according to any one of claims 1 to 3, wherein The insulating piece (300) further comprises a second insulating portion (320); the second insulating portion (320) covering an inner edge of the first opening (110), the second insulating portion (320) having a fourth opening (321) communicating with the third opening (311); the second insulating portion (320) being configured to insulate the tab (31) passing through the fourth opening (321) and the plate body (100).

6. The battery case of claim 5, wherein, The insulating piece (300) further comprises a third insulating portion (330): the third insulating portion (330) being arranged on a side of the plate body (100) facing the shell (20), the third insulating portion (330) having a fifth opening (331) communicating with the fourth opening (321); the third insulating portion (330) being configured to insulate a surface of the plate body (100) facing the shell (20) and the tab (31).

7. The battery case according to any one of claims 1 to 6, wherein The plate body (100), the electrical lead-out piece (200) and the insulating piece (300) are integrally formed by injection molding.

8. The battery case according to any one of claims 1 to 6, wherein The insulating piece (300) is a plastic insulating piece (300), a rubber insulating piece (300) or a ceramic insulating piece (300).

9. The battery case according to any one of claims 1 to 6, wherein The side of the electric lead-out piece (200) facing away from the plate body (100) has a groove (220), the groove bottom of the groove (220) communicates with the second opening (210), and the groove bottom of the groove (220) is used to connect with the part of the tab (31) that penetrates through the second opening (210).

10. The battery case of claim 1, wherein, The plate body (100) and the shell (20) are in an integrated structure.

11. A battery, characterized by The battery shell (10) as claimed in any one of claims 1 to 10 is used for the battery. The tab (31) penetrates through the first opening (110) of the plate body (100), the third opening (311) of the insulating piece (300), and the second opening (210) of the electric lead-out piece (200), and is electrically connected with the electric lead-out piece (200). The tab (31) comprises:

12. The battery of claim 11, wherein, an extension section (31a) connected with one end of the tab (31), and the other end of the extension section (31a) penetrates through the first opening (110), the second opening (210), and the third opening (311); a connecting section (31b) connected with the extension section (31a) at the end facing away from the tab (30), and the connecting section (31b) is arranged on the surface of the electric lead-out piece (200) facing away from the tab (30). The extension direction of the extension section (31a) is perpendicular to the extension direction of the connecting section (31b).

13. The battery of claim 12, wherein, The battery as claimed in any one of claims 11 to 13 is used for providing electric energy for the electric device.

14. An electrical device, characterized by ​

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