Leading-out piece, cover plate assembly, battery and electric equipment

Abstract

According to the lead-out piece, the cover plate assembly, the battery and the electric equipment, the lead-out piece comprises the positioning part, the positioning part is suitable for being connected with a pole lug and limiting the pole lug, and by arranging the positioning part, the positioning part is suitable for being connected with the pole lug and limiting the pole lug, so that the pole lug cannot be folded and inversely inserted into a pole core under the limiting action of the positioning part; and the accommodating space for accommodating the pole core in the shell is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and particularly relates to a lead-out piece, a cover plate assembly, a battery and an electrical device. Background Art

[0002] The battery connects the electrode core and the lead-out piece through the tab, and the lead-out piece is charged and discharged through the pole column. In the prior art, the tab in the battery has the problem of being easily inserted backward into the electrode core. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a lead-out piece, a cover plate assembly, a battery and an electrical device, so as to solve the problem that the tab in the prior art is folded in the battery and is easily inserted backward into the electrode core.

[0004] To achieve the purpose of the utility model, the following technical solutions are provided:

[0005] In the first aspect, the utility model provides a lead-out piece, including a positioning part, which is adapted to be connected to the tab and limit the tab.

[0006] In an implementation manner, the positioning part includes a first surface and a second surface opposite to each other in a first direction, and a through hole is formed in the positioning part and penetrates through the first surface and the second surface, and the through hole is adapted to allow the tab to pass through.

[0007] In an implementation manner, the through hole has surrounding side walls connected end to end.

[0008] In an implementation manner, the positioning part further includes a third surface, the third surface connects the first surface and the second surface, and the through hole also penetrates through the third surface.

[0009] In an implementation manner, the lead-out piece further includes: a main body part, having a first surface in the first direction; a protruding part, connected to one end of the main body part and protruding from the first surface in the first direction, and at least part of the protruding part is the positioning part.

[0010] In an implementation manner, the protruding part includes a first plate, a second plate and a third plate, the first plate and the second plate are respectively connected to two ends of the third plate, and the first plate and the second plate are arranged opposite to each other, and the main body part is connected to one end of the first plate and / or the second plate far away from the third plate; wherein, any one of the first plate, the second plate and the third plate is the positioning part, or any two of the first plate, the second plate and the third plate are the positioning part, or the first plate, the second plate and the third plate are all the positioning part.

[0011] In one embodiment, the main body portion further includes a second surface opposite to the first surface, and the main body portion is provided with a first pole hole that penetrates through the first surface and the second surface.

[0012] In one embodiment, there is at least one main body portion and at least two protruding portions, and the main body portions and the protruding portions are arranged alternately; alternatively, there are at least two main body portions and at least one protruding portion, and the main body portions and the protruding portions are arranged alternately.

[0013] In one embodiment, the lead-out member further includes a limiting portion, and the limiting portion is connected to one end of the protruding portion away from the main body portion.

[0014] In a second aspect, the present invention further provides a cover plate assembly, including a cover plate and the lead-out member described in the various embodiments of the first aspect.

[0015] In one embodiment, the cover plate is provided with a first through hole, and at least part of the positioning portion is received in the first through hole.

[0016] In one embodiment, the cover plate assembly further includes an insulating member. The insulating member is provided with a second through hole. The insulating member is connected to one side surface of the cover plate. The first through hole and the second through hole are communicated, and at least part of the positioning portion passes through the second through hole.

[0017] In one embodiment, the lead-out member is provided with a first pole hole. The cover plate assembly further includes a pole. The cover plate is further provided with a second pole hole, and the insulating member is further provided with a third pole hole. The pole sequentially passes through the second pole hole, the third pole hole, and the first pole hole.

[0018] In one embodiment, at least part of the positioning portion passes through the first through hole.

[0019] In one embodiment, the cover plate assembly further includes a cap. The cap has a receiving space with an open end. The cap is connected to the cover plate, and at least part of the positioning portion is received in the receiving space.

[0020] In a third aspect, the present invention further provides a battery, including a housing, a tab, and the cover plate assembly described in the various embodiments of the second aspect. The cover plate is connected to the housing. A part of the tab is received in the housing, and another part of the tab extends out of the housing and is connected to the positioning portion.

[0021] In one embodiment, the battery further includes a core, the tab includes an extension portion and a bent portion, the core is received in the housing, the bent portion is connected to the extension portion, one end of the extension portion away from the bent portion is connected to the core, and one end of the bent portion away from the extension portion extends out of the housing and is connected to the positioning portion.

[0022] In one embodiment, there are a plurality of the bent portions, and all the plurality of bent portions are connected to the positioning portion.

[0023] In a fourth aspect, the present invention further provides an electrical device, including an electrical device and the battery as described in the various embodiments of the third aspect, and the battery is adapted to supply power to the electrical device.

[0024] By providing the positioning portion, the positioning portion is adapted to be connected to the tab, so that the tab extends out of the housing of the battery, and the tab will not be folded and inserted into the core under the limiting action of the positioning portion, thereby increasing the accommodation space in the housing for receiving the core. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0026] Figure 1 is a structural diagram of a lead-out member of an embodiment;

[0027] Figure 2 is a structural diagram of a lead-out member of another embodiment;

[0028] Figure 3 is a structural diagram of a lead-out member of another embodiment;

[0029] Figure 4 is a structural diagram of a lead-out member of another embodiment;

[0030] Figure 5 is an exploded view of a cover assembly of an embodiment;

[0031] Figure 6 is a structural diagram of a cover assembly of an embodiment;

[0032] Figure 7 is a structural diagram of the positive electrode of a battery of an embodiment;

[0033] Figure 8 is a structural diagram of the negative electrode of a battery of an embodiment;

[0034] Figure 9 It is a structural diagram of a battery of an embodiment.

[0035] Explanation of reference numerals:

[0036] 1000 - Battery;

[0037] 100 - Cover assembly;

[0038] 10 - Lead - out piece, 11 - Main body part, 111 - First surface, 112 - Second surface, 113 - First pole - column hole, 12 - Protruding part, 121 - First plate, 122 - Second plate, 123 - Third plate, 13 - Limiting part, 131 - Third surface, 132 - Fourth surface, 14 - Positioning part, 141 - First face, 142 - Second face, 143 - Through - hole, 144 - Third face;

[0039] 20 - Cover plate, 21 - First through - hole, 22 - First liquid - injection port, 23 - Second pole - column hole;

[0040] 30 - Insulating part, 31 - Second through - hole, 32 - Second liquid - injection port, 33 - Third pole - column hole;

[0041] 40 - Explosion - proof valve;

[0042] 50 - Pole column, 51 - Conductor, 52 - Insulating spacer;

[0043] 60 - Cap;

[0044] 200 - Tab, 201 - Extension part, 202 - Bent part;

[0045] 300 - Housing, 301 - Accommodating cavity;

[0046] 400 - Electrode core;

[0047] Z - First direction. Detailed implementation manners

[0048] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0049] It should be noted that when a component is referred to as being "fixed to" another component, it can be directly on the other component or there may also be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component at the same time.

[0050] Unless otherwise defined, all technical and scientific terms used in the present utility model have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the description of the present utility model in the specification are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. The term "and / or" used in the present utility model includes any and all combinations of one or more of the related listed items.

[0051] The following will describe in detail some embodiments of the present utility model with reference to the accompanying drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0052] Please refer to Figure 1 and Figure 5 , the present utility model provides a lead-out member 10, including a positioning portion 14, and the positioning portion 14 is adapted to be connected to the tab 200 and is adapted to limit the tab 200.

[0053] Optionally, the positioning portion 14 limits the tab 200 by stretching the tab 200. Optionally, the tab 200 can extend out of the housing 300 of the battery 1000 under the stretching of the positioning portion 14, or can continue to be received in the housing 300, without limitation. Optionally, the tab 200 can be straightened by the positioning portion 14, and the tab 200 can also be bent and extended, without limitation.

[0054] Optionally, the lead-out member 10 can be disposed at the positive electrode of the battery 1000, or can be disposed at the negative electrode of the battery 1000, without limitation. Optionally, the lead-out member 10 can be made of a material that meets the requirements of structural strength, good electrical conductivity, and easy processing and forming, and can specifically be stainless steel, nickel, aluminum-nickel alloy, iron-nickel alloy, etc., without limitation.

[0055] Optionally, please refer to Figure 5 , the lead-out member 10 is used to connect to the tab 200 of the battery 1000 to be electrically connected to the electrode core 400 of the battery 1000. Optionally, the tab 200 and the positioning portion 14 can be connected and fixed by welding, bonding, screwing, clamping, etc., without limitation.

[0056] By providing the positioning portion 14, the positioning portion 14 is adapted to be connected to the tab 200 and is adapted to limit the tab 200. Compared with the scheme in which the tab 200 is only connected to the lead-out member 10 and is not stretched by the lead-out member 10, the tab 200 in this scheme is limited due to the connection with the positioning portion 14, so that the tab 200 will not be folded and inserted into the electrode core 400 under the limiting action of the positioning portion 14, and the accommodation space for accommodating the electrode core 400 in the housing 300 is increased.

[0057] Please refer to Figures 1 to 4, the positioning portion 14 includes a first surface 141 and a second surface 142 facing away from each other in the first direction Z. The positioning portion 14 is provided with a through hole 143 penetrating through the first surface 141 and the second surface 142, and the through hole 143 is adapted to allow the tab 200 to pass through. Optionally, the first direction Z corresponds to the thickness direction of the lead-out member 10.

[0058] Optionally, there may be a plurality of through holes 143, and the plurality of through holes 143 are arranged at intervals on the third plate 123 without limitation. Optionally, the tab 200 is adapted to pass through the through hole 143 from the side of the lead-out member 10 facing the electrode core 400 and is connected to the surface of the positioning portion 14 facing away from the electrode core 400, so that the welding surface of the tab 200 and the lead-out member 10 is located on the side of the lead-out member 10 facing away from the electrode core 400, and the metal particles generated by welding are not likely to fall into the battery 1000 to cause a short circuit.

[0059] Exemplarily, the first surface 141 is the surface facing away from the electrode core 400, and the second surface 142 is the surface facing the electrode core 400, that is, the first surface 141 and the second surface 142 are arranged in sequence in the height direction of the battery 1000, and the tab 200 is connected to the first surface 141. Optionally, when the height direction of the battery 1000 is the same as the vertical direction, the first surface 141 and the second surface 142 may be horizontally arranged or may be inclined relative to the horizontal direction without limitation. Optionally, when the first surface 141 and the second surface 142 are inclined relative to the horizontal direction, the tab 200 may be connected to the first surface 141 or the second surface 142 without limitation.

[0060] By providing that the positioning portion 14 includes a first surface 141 and a second surface 142 facing away from each other in the first direction Z, the positioning portion 14 is provided with a through hole 143 penetrating through the first surface 141 and the second surface 142, and the through hole 143 is adapted to allow the tab 200 to pass through, so that the welding surface of the tab 200 and the lead-out member 10 is located on the side of the lead-out member 10 facing away from the electrode core 400, and the metal particles generated by welding are not likely to fall into the battery 1000 to cause a short circuit.

[0061] In one embodiment, please refer to Figure 1 and Figure 2 , the through hole 143 has peripheral side walls connected end to end. Optionally, the through hole 143 may be provided in the middle of the positioning portion 14 or may be provided near the edge of the positioning portion 14 without limitation. Optionally, the tab 200 may be connected to any position around the through hole 143 of the positioning portion 14 or may be connected to at least one side wall of the through hole 143 without limitation.

[0062] By providing that the through hole 143 has peripheral side walls connected end to end, the tab 200 is located within the through hole 143 and is not likely to come into contact with the cover plate 20. Therefore, the insulating ring of the cover plate assembly 100 can be cancelled, the space occupied by the cover plate assembly 100 can be reduced, and the production cost can be lowered.

[0063] In another embodiment, please refer to Figure 3 and Figure 4 , the positioning portion 14 further includes a third surface 144. The third surface 144 connects the first surface 141 and the second surface 142, and the through hole 143 also penetrates through the third surface 144.

[0064] Optionally, in the orthographic projection of the positioning portion 14 in the thickness direction, the contour shape of the positioning portion 14 can be a rectangle, a square, a triangle, an equilateral polygon, a circle, an ellipse, etc., without limitation. The first surface 141 and the second surface 142 are the two surfaces with the largest area of the positioning portion 14, and the third surface 144 is the surface with a smaller area of the positioning portion 14.

[0065] Optionally, when the contour shape of the positioning portion 14 in the orthographic projection in the thickness direction is a rectangle or an ellipse, the third surface 144 can be the surface of the positioning portion 14 in the width direction or the surface of the positioning portion 14 in the length direction, without limitation. Optionally, when the contour shape of the positioning portion 14 in the orthographic projection in the thickness direction is a square, a triangle, an equilateral polygon, or a circle, the third surface 144 is at least part of the outer peripheral surface of the positioning portion 14.

[0066] By providing that the positioning portion 14 further includes a third surface 144, the third surface 144 connects the first surface 141 and the second surface 142, and the through hole 143 also penetrates through the third surface 144, the tab 200 can be more easily inserted through the through hole 143, and the contact area between the tab 200 and the lead-out member 10 is relatively large, increasing the current-carrying capacity of the tab 200.

[0067] Please refer to Figure 1 and Figure 5 , the lead-out member 10 further includes a main body portion 11 and a protruding portion 12. The main body portion 11 has a first surface 111 in the first direction Z. The protruding portion 12 is connected to one end of the main body portion 11 and protrudes from the first surface 111 in the first direction Z. At least part of the protruding portion 12 is the positioning portion 14.

[0068] Optionally, the main body portion 11 and the protruding portion 12 can be an integral structure, or can be connected and fixed by means of snap connection, welding, screwing, riveting, etc., without limitation. Optionally, the positioning portion 14 can be the part of the protruding portion 12 far from the main body portion 11 or the part of the protruding portion 12 close to the main body portion 11, without limitation.

[0069] By providing that the lead-out member 10 further includes a main body portion 11 and a protruding portion 12, the main body portion 11 has a first surface 111 in the first direction Z, the protruding portion 12 is connected to one end of the main body portion 11 and protrudes from the first surface 111 in the first direction Z, and at least a part of the protruding portion 12 is a positioning portion 14, such that the positioning portion 14 is located on the protruding portion 12, the distance that the tab 200 can extend out of the housing 300 of the battery 1000 is increased, the folding of the tab 200 is further reduced, the tab 200 is prevented from being inserted back into the electrode core 400, and the accommodation space for accommodating the electrode core 400 in the housing 300 is further increased.

[0070] Meanwhile, the tab 200 is welded to the protruding portion 12, increasing the distance between the connection portion of the tab 200 and the lead-out member 10 and the electrode core 400, reducing the conduction of the heat generated by the lead-out member 10 during the electrochemical cycle to the electrode core 400, and since the folding of the tab 200 inside the housing 300 is reduced, the space utilization rate of the battery 1000 is improved.

[0071] Please refer to Figure 1 , the protruding portion 12 includes a first plate 121, a second plate 122 and a third plate 123. The first plate 121 and the second plate 122 are respectively connected to both ends of the third plate 123, and the first plate 121 and the second plate 122 are arranged oppositely. The main body portion 11 is connected to one end of the first plate 121 and / or the second plate 122 away from the third plate 123. Among them, any one of the first plate 121, the second plate 122 and the third plate 123 is the positioning portion 14, or any two of the first plate 121, the second plate 122 and the third plate 123 are the positioning portions 14, or the first plate 121, the second plate 122 and the third plate 123 are all the positioning portions 14.

[0072] Optionally, the first plate 121 and the third plate 123 are perpendicularly arranged, and may also have an acute angle or an obtuse angle, without limitation. Optionally, the second plate 122 and the third plate 123 are perpendicularly arranged, and may also have an acute angle or an obtuse angle, without limitation. Optionally, the third plate 123 and the main body portion 11 are parallelly arranged, and may also be inclined, without limitation.

[0073] Optionally, the first plate 121, the second plate 122 and the third plate 123 may be of an integral structure, or may be detachably connected by means such as snap connection, screw connection and riveting, without limitation.

[0074] By setting that the protruding part 12 includes a first plate 121, a second plate 122 and a third plate 123, the first plate 121 and the second plate 122 are respectively connected to two ends of the third plate 123, and the first plate 121 and the second plate 122 are arranged oppositely, the main body part 11 is connected to one end of the first plate 121 and / or the second plate 122 far away from the third plate 123. Among them, any one of the first plate 121, the second plate 122 and the third plate 123 is a positioning part 14, or any two of the first plate 121, the second plate 122 and the third plate 123 are positioning parts 14, or the first plate 121, the second plate 122 and the third plate 123 are all positioning parts 14, so that the positioning part 14 can protrude from the first surface 111, so that the connection part of the tab 200 and the lead-out part 10 is located on the side of the lead-out part 10 facing away from the electrode core 400, and at the same time, the structural strength and heat dissipation performance of the lead-out part 10 are improved.

[0075] Please refer to Figure 1 and Figure 5 , the main body part 11 further includes a second surface 112 opposite to the first surface 111, and the main body part 11 is provided with a first pole hole 113, and the first pole hole 113 penetrates through the first surface 111 and the second surface 112.

[0076] Optionally, the first pole hole 113 is adapted to be connected to the pole 50. Optionally, please refer to Figure 1 , the first pole hole 113 can be a circular hole, a rectangular hole, an oval hole and other non-circular holes, etc., to fit the shape of the pole 50, without limitation. Optionally, the pole 50 and the main body part 11 can be fixedly connected at the first pole hole 113 by welding, clamping, bonding, magnetic attraction and other methods, without limitation.

[0077] By setting that the main body part 11 further includes a second surface 112 opposite to the first surface 111, and the main body part 11 is provided with a first pole hole 113, and the first pole hole 113 penetrates through the first surface 111 and the second surface 112, the electrode core 400 of the battery 1000 can be connected to the pole 50 through the tab 200 and the lead-out part 10 in sequence, and the charging and discharging operation can be carried out through the pole 50.

[0078] Please refer to Figure 2 and Figure 4 , there is at least one main body part 11 and at least two protruding parts 12, and the main body part 11 and the protruding parts 12 are arranged alternately, or there are at least two main body parts 11 and at least one protruding part 12, and the main body part 11 and the protruding parts 12 are arranged alternately.

[0079] Exemplarily, there is one main body part 11 and two protruding parts 12, and the two protruding parts 12 are respectively connected to two ends of the main body part 11 in the length direction of the lead-out part 10. Optionally, the surfaces of the third plates 123 of the multiple protruding parts 12 facing away from the main body part 11 are flush.

[0080] By setting the main body part 11 to be at least one and the protruding part 12 to be at least two, with the main body part 11 and the protruding part 12 arranged alternately, or by setting the main body part 11 to be at least two and the protruding part 12 to be at least one, with the main body part 11 and the protruding part 12 arranged alternately, the current passes through multiple tabs 200 and dispersedly flows to the tabs 200, improving the current-carrying capacity of the lead-out member 10 and simultaneously enhancing the reliability and safety of the connection between the tabs 200 and the lead-out member 10.

[0081] Please refer to Figure 1 and Figure 2 , the lead-out member 10 further includes a limiting part 13, and the limiting part 13 is connected to one end of the protruding part 12 far from the main body part 11.

[0082] Exemplarily, please refer to Figure 1 , the main body part 11 is connected to the aforementioned first plate 121, and the limiting part 13 is connected to the second plate 122. Optionally, the limiting part 13 and the protruding part 12 can be of an integral structure, or can be connected and fixed to the protruding part 12 by means such as welding, clamping, bonding, and magnetic attraction, without limitation.

[0083] Optionally, both the limiting part 13 and the main body part 11 are used to abut against the insulating part 30 of the cover plate assembly 100 to limit the lead-out member 10 in the thickness direction of the main body part 11. Optionally, the limiting part 13 includes opposite third surface 131 and fourth surface 132, the third surface 131 is flush with the first surface 111, and the fourth surface 132 is flush with the second surface 112 of the main body part 11.

[0084] Exemplarily, please refer to Figure 2 , there are two limiting parts 13, and the two limiting parts 13 are respectively arranged at both ends in the length direction of the lead-out member 10.

[0085] By setting the limiting part 13, and the limiting part 13 is connected to one end of the protruding part 12 far from the main body part 11, the connection between the lead-out member 10 and the insulating part 30 of the cover plate assembly 100 becomes more stable, and at the same time, the over-current capacity and heat dissipation capacity of the lead-out member 10 are improved.

[0086] Please refer to Figures 5 - 8 , the present utility model further provides a cover plate assembly 100, including a cover plate 20 and the lead-out member 10 in the embodiment of the present utility model.

[0087] Optionally, the lead-out member 10 can be connected to the cover plate 20, and the lead-out member 10 can also be connected to other structures of the cover plate assembly such as the insulating part 30, the pole column 50, etc., without limitation. Optionally, please refer to Figures 5 - 7 , the cover plate 20 at the positive electrode of the battery 1000 is provided with a first liquid injection port 22, and the first liquid injection port 22 is used to inject electrolyte (not shown) into the interior of the housing 300. Optionally, please refer toFigure 8 A cover plate assembly 100 located at the negative electrode of the battery 1000 is further provided with an explosion-proof valve 40, which is used for exhausting gas and discharging electrolyte when the pressure in the battery 1000 is too high. Optionally, the cover plate 20 can be made of materials that meet the structural strength and are easy to process and form, specifically, it can be materials such as aluminum alloy, carbon fiber, and copper alloy, without limitation.

[0088] The cover plate assembly 100 provided by the present utility model realizes the enclosure of the housing 300 of the battery 1000 by adopting the cover plate 20 and the lead-out member 10 in the embodiment of the present utility model. The electrode core 400 of the battery 1000 can be charged and discharged through the lead-out member 10. At the same time, it prevents the electrode tab 200 from folding and being inserted into the electrode core 400, increases the accommodation space in the housing 300 for accommodating the electrode core 400, and improves the safety of the battery 1000.

[0089] Please refer to Figures 5 - 8 , the cover plate 20 is provided with a first through hole 21, and at least part of the positioning portion 14 is received in the first through hole 21.

[0090] Optionally, in this embodiment, the protruding portion 12 communicates with the outside through the first through hole 21. Optionally, the protruding portion 12 can protrude from the surface of the cover plate 20 facing away from the electrode core 400, or can be concave on the surface of the cover plate 20 facing away from the electrode core 400, without limitation. Optionally, the outer peripheral surface of the protruding portion 12 can be in contact with the inner peripheral surface of the first through hole 21, or can be spaced apart, without limitation. By providing that the cover plate 20 is provided with the first through hole 21 and at least part of the positioning portion 14 is received in the first through hole 21, the battery 1000 can be welded between the electrode tab 200 and the positioning portion 14 after the cover plate 20 is installed, reducing the damage of the battery 1000 caused by dust generated during welding entering the interior of the housing 300.

[0091] Please refer to Figures 5 - 8 , the cover plate assembly 100 further includes an insulating member 30. The insulating member 30 is provided with a second through hole 31. The insulating member 30 is connected to one side surface of the cover plate 20. The first through hole 21 and the second through hole 31 are communicated, and at least part of the positioning portion 14 passes through the second through hole 31.

[0092] Optionally, please refer to Figure 5 and Figure 6 , the equivalent diameter size of the second through hole 31 is smaller than the equivalent diameter size of the first through hole 21, and the outer peripheral surface of the protruding portion 12 is in contact with the inner peripheral wall surface of the second through hole 31, so that there is a spacing distance between the protruding portion 12 and the inner peripheral surface of the first through hole 21, avoiding short circuit between the lead-out member 10 and the cover plate 20.

[0093] Optionally, the first through-hole 21 and the second through-hole 31 may be multiple. The multiple first through-holes 21 and the multiple second through-holes 31 are arranged in one-to-one correspondence, and are arranged in one-to-one correspondence with the multiple protruding portions 12. Optionally, the tab 200 sequentially passes through the second through-hole 31, the first through-hole 21, and the through-hole 143 of the protruding portion 12, and is connected to the surface of the protruding portion 12 facing away from the main body portion 11.

[0094] Optionally, the insulating member 30 is provided with a second liquid injection port 32. The first liquid injection port 22 is arranged opposite to the second liquid injection port 32, and the second liquid injection port 32 communicates with the inside of the housing 300 of the battery 1000. Optionally, the insulating member 30 may be made of a material that meets the requirements of structural strength, good insulation, and stable chemical properties, specifically rubber, plastic, silicone, etc., without limitation.

[0095] By providing the insulating member 30, the insulating member 30 is provided with a second through-hole 31. The insulating member 30 is connected to one side surface of the cover plate 20. The first through-hole 21 and the second through-hole 31 are communicated. At least a part of the positioning portion 14 is inserted into the second through-hole 31, so that insulation is provided between the lead-out member 10 and the cover plate 20, and short circuit between the lead-out member 10 and the cover plate 20 is avoided.

[0096] Please refer to Figure 5 , the lead-out member 10 is provided with a first pole hole 113. The cover plate assembly 100 further includes a pole 50. The cover plate 20 is further provided with a second pole hole 23. The insulating member 30 is further provided with a third pole hole 33. The pole 50 sequentially passes through the second pole hole 23, the third pole hole 33, and the first pole hole 113.

[0097] Optionally, the pole 50 may be arranged in the middle of the cover plate 20, so as to reduce the path through which the current flows on the pole 50, and reduce the internal resistance and heat generation of the lead-out member 10. Optionally, the pole 50 may also be arranged at one end of the cover plate 20 in the length direction of the cover plate 20, so as to simplify the installation process of the cover plate assembly 100. At the same time, a larger contact area is provided for the tab 200 and the lead-out member 10, and the current-carrying capacity of the lead-out member 10 and the tab 200 is improved.

[0098] Optionally, the pole 50 includes a conductor 51 and an insulating spacer 52. The insulating spacer 52 is arranged around the outer peripheral surface of the conductor 51 and elastically abuts against the inner wall surface of the second pole hole 23, preventing short circuit between the conductor 51 and the cover plate 20, and at the same time fixing the pole 50 on the cover plate 20. Optionally, the conductor 51 is in interference fit with the first pole hole 113, so as to ensure stable electrical connection between the pole 50 and the conductor 51.

[0099] Optionally, the material of the conductor 51 is similar to that of the lead-out member 10, for reference only and will not be elaborated. Optionally, the material of the insulating spacer 52 is similar to that of the insulating member 30, for reference only and will not be elaborated.

[0100] By providing the terminal post 50, the cover plate 20 is further provided with a second terminal post hole 23, and the insulating member 30 is further provided with a third terminal post hole 33. The terminal post 50 sequentially passes through the second terminal post hole 23, the third terminal post hole 33, and the first terminal post hole 113, enabling the electrode core 400 of the battery 1000 to perform charge and discharge operations through the terminal post 50, facilitating connection with an external structure, and improving the practicality of the battery 1000.

[0101] Please refer to Figure 6 , at least a part of the protruding portion 12 passes through the first through hole 21. Optionally, the foregoing third plate 123 protrudes from the surface of the cover plate 20 facing away from the insulating member 30, so that the through hole 143 is located on the side of the cover plate 20 facing away from the insulating member 30.

[0102] By providing that at least a part of the protruding portion 12 passes through the first through hole 21, the through hole 143 is located on the side of the cover plate 20 facing away from the insulating member 30, facilitating the connection between the tab 200 and the protruding portion 12.

[0103] Please refer to Figure 5 , the cover plate assembly 100 further includes a cap 60. The cap 60 has a receiving space (not shown) with an open end. The cap 60 is connected to the cover plate, and at least a part of the positioning portion 14 is received in the receiving space.

[0104] Optionally, the cap 60 is connected to the surface of the cover plate 20 facing away from the insulating member 30, and a part of the protruding portion 12, which is the positioning portion 14, is received in the receiving space. Optionally, there is a spacing distance between the inner wall surface of the cap 60 and the positioning portion 14. Optionally, there may be a plurality of caps 60, and the plurality of caps 60 and the plurality of first through holes 21 are provided in one-to-one correspondence. Optionally, the cap 60 and the cover plate 20 can be connected and fixed by welding, snap connection, screwing, riveting, bonding, etc., without limitation.

[0105] By providing the cap 60, the cap 60 has a receiving space (not shown) with an open end. The cap 60 is connected to the cover plate, and at least a part of the positioning portion 14 is received in the receiving space, enabling the parts of the tab 200 and the lead-out member 10 protruding from the cover plate 20 to be isolated from the outside and not easily affected by the external environment.

[0106] Please refer to Figures 7 - 9 , the present utility model further provides a battery 1000, including a housing 300, a tab 200, and the cover plate assembly 100 in the embodiment of the present utility model. The cover plate 20 is connected to the housing 300. A part of the tab 200 is received in the housing 300, and another part of the tab 200 extends out of the housing 300 and is connected to the positioning portion 14.

[0107] Optionally, the battery 1000 can be a power battery, a household energy storage battery, a commercial energy storage battery, an industrial energy storage battery, etc., without limitation. Optionally, the tab 200 is connected to the surface of the positioning portion 14 facing away from the electrode core 400. Optionally, the battery further includes an electrode core 400. The housing 300 has a receiving cavity 301. The electrode core 400 is received in the receiving cavity. The electrode core 400 and the tab 200 are connected. The cover plate 20 of the cover plate assembly 100 is connected to the housing 300 and closes the receiving cavity 301. Optionally, the cover plate 20 and the housing 300 can be connected and fixed by welding, snap connection, bonding, riveting, screwing, etc., without limitation. Optionally, an electrolyte (not shown) is filled in the receiving cavity 301. The electrode core 400 is immersed in the electrolyte so that the electrode core 400 can be charged and discharged through the electrolyte.

[0108] Optionally, there can be multiple electrode cores 400, and the multiple electrode cores 400 are connected in series or in parallel, without limitation. Optionally, there can be multiple tabs 200, and the multiple tabs 200 are connected in series or in parallel, without limitation. Optionally, the housing 300 can be made of a material that meets the structural strength and is easy to process and form, specifically materials such as aluminum alloy, carbon fiber, and copper alloy, without limitation.

[0109] For the battery 1000 provided by the present utility model, by adopting the housing 300, the tab 200, and the cover plate assembly 100 in the embodiments of the present utility model, the cover plate 20 is connected to the housing 300. A part of the tab 200 is received in the housing 300, and the other part of the tab 200 extends out of the housing 300 and is connected to the positioning portion 14, preventing the tab 200 from folding and being inserted into the electrode core 400 in reverse, increasing the receiving space in the housing 300 for receiving the electrode core 400, and improving the safety of the battery 1000.

[0110] Please refer to Figure 5 , the battery 1000 further includes an electrode core 400. The tab 200 includes an extension portion 201 and a bending portion 202. The electrode core 400 is received in the housing 300. The bending portion 202 is connected to the extension portion 201. One end of the extension portion 201 away from the bending portion 202 is connected to the electrode core 400. One end of the bending portion 202 away from the extension portion 201 extends out of the housing 300 and is connected to the positioning portion 14.

[0111] By providing that the tab 200 includes an extension portion 201 and a bending portion 202, the electrode core 400 is received in the housing 300, the bending portion 202 is connected to the extension portion 201, one end of the extension portion 201 away from the bending portion 202 is connected to the electrode core 400, and one end of the bending portion 202 away from the extension portion 201 extends out of the housing 300 and is connected to the positioning portion 14, the contact area between the tab 200 and the positioning portion 14 is increased, and the current-carrying capacity and connection strength of the tab 200 and the lead-out member 10 are improved.

[0112] Please refer to Figure 5, there are multiple bending portions 202, and all the multiple bending portions 202 are connected to the positioning portion 14. Exemplarily, there are two bending portions 202, and the two bending portions 202 are bent in opposite directions in the width direction of the cover plate 20 and are respectively connected to different positions of the positioning portion 14.

[0113] By setting the bending portions 202 to be multiple and all the multiple bending portions 202 are connected to the positioning portion 14, the current-carrying capacity and connection strength of the tab 200 and the lead-out member 10 are further improved.

[0114] The present utility model further provides an assembling method for the cover plate assembly 100 of the battery 1000. The assembling method includes:

[0115] Connect and fix the cover plate 20, the insulating member 30, and the lead-out member 10 in sequence, and then insert the pole column 50 into the second pole column hole 23, the third pole column hole 33, and the first pole column hole 113 in sequence.

[0116] Connect the cover plate 20 connected with the insulating member 30, the lead-out member 10, and the pole column 50 to the housing 300 of the battery 1000.

[0117] Pull the tab 200 in the housing 300 out of the battery 1000 through the through hole 143 of the lead-out member 10, weld the tab 200 to the positioning portion 14 of the lead-out member 10, and finally connect the cap 60 to the cover plate 20.

[0118] The present utility model further provides an electrical device (not shown), including an electrical device (not shown) and the battery 1000 in the embodiment of the present utility model. The battery 1000 is suitable for supplying power to the electrical device. Optionally, the electrical device can be a vehicle, a household appliance, a commercial appliance, an industrial appliance, etc., without limitation. Optionally, the electrical device can be a motor, a controller, a sensor, etc., without limitation. The battery 1000 in the embodiment of the present utility model realizes the storage of electrical energy and the supply of power to the electrical device through the conversion between chemical energy and electrical energy.

[0119] For the electrical device provided by the present utility model, by adopting the electrical device and the battery 1000 in the embodiment of the present utility model, the battery 1000 is suitable for supplying power to the electrical device, realizing the storage and output of electrical energy. At the same time, it prevents the tab 200 from folding and being inserted into the electrode core 400, increases the accommodation space in the housing 300 for accommodating the electrode core 400, and improves the safety of the battery 1000.

[0120] In the description of the embodiments of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0121] The above-disclosed is only a preferred embodiment of the present utility model. Of course, it cannot be used to limit the scope of rights of the present utility model. Those of ordinary skill in the art can understand the entire or partial processes of implementing the above embodiments, and the equivalent changes made according to the claims of the present utility model still fall within the scope covered by the present utility model.

Claims

1. A lead-out member, characterized in that, It includes a positioning portion which is adapted to be connected to the tab and to limit the tab. The positioning portion includes a first surface and a second surface facing away from each other in a first direction. The positioning portion is provided with a through hole penetrating the first surface and the second surface, and the through hole is adapted for the tab to pass through.

2. The lead-out part according to claim 1, characterized in that, The through hole has peripheral side walls connected end to end.

3. The lead-out member according to claim 1, characterized in that, The positioning portion further includes a third surface connecting the first surface and the second surface, and the through hole also penetrates the third surface.

4. The lead-out member according to any one of claims 1-3, characterized in that, The lead-out member further includes: A main body portion having a first surface in the first direction; A protruding portion connected to one end of the main body portion and protruding from the first surface in the first direction, at least a part of the protruding portion being the positioning portion.

5. The lead-out member according to claim 4, characterized in that The protruding portion includes a first plate, a second plate and a third plate. The first plate and the second plate are respectively connected to two ends of the third plate, and the first plate and the second plate are arranged oppositely. The main body portion is connected to one end of the first plate and / or the second plate away from the third plate; Wherein, any one of the first plate, the second plate and the third plate is the positioning portion, or any two of the first plate, the second plate and the third plate are the positioning portions, or the first plate, the second plate and the third plate are all the positioning portions.

6. The lead-out member according to claim 4, characterized in that, The main body portion further includes a second surface opposite to the first surface. The main body portion is provided with a first pole hole which penetrates the first surface and the second surface.

7. The lead-out member according to claim 4, characterized in that, There is at least one main body portion and at least two protruding portions, and the main body portions and the protruding portions are arranged alternately; Or, there are at least two main body portions and at least one protruding portion, and the main body portions and the protruding portions are arranged alternately.

8. The lead-out member according to claim 4, characterized in that, The lead-out member further includes a limiting portion connected to one end of the protruding portion away from the main body portion.

9. A cover plate assembly, characterized in that, It includes a cover plate and the lead-out member according to any one of claims 1-8.

10. The cover plate assembly according to claim 9, wherein, The cover plate is provided with a first through hole, and at least a part of the positioning portion is received in the first through hole.

11. The cover plate assembly according to claim 10, wherein, The cover plate assembly further includes an insulating member provided with a second through hole. The insulating member is connected to one side surface of the cover plate. The first through hole and the second through hole are communicated, and at least a part of the positioning portion penetrates through the second through hole.

12. The cover plate assembly according to claim 11, wherein, The lead-out member is provided with a first pole hole. The cover plate assembly further includes a pole. The cover plate is further provided with a second pole hole, and the insulating member is further provided with a third pole hole. The pole sequentially penetrates through the second pole hole, the third pole hole and the first pole hole.

13. The cover plate assembly according to claim 10, characterized in that, At least a part of the positioning portion penetrates through the first through hole.

14. The cover plate assembly according to claim 13, wherein, The cover plate assembly further includes a cap having a receiving space with an open end. The cap is connected to the cover plate, and at least a part of the positioning portion is received in the receiving space.

15. A battery, characterized in that, It includes a housing, a tab and the cover plate assembly according to any one of claims 9-14. The cover plate is connected to the housing. A part of the tab is received in the housing, and another part of the tab extends out of the housing and is connected to the positioning portion.

16. The battery according to claim 15, wherein, The battery further includes an electrode core. The tab includes an extension portion and a bent portion. The electrode core is received in the housing. The bent portion is connected to the extension portion. One end of the extension portion away from the bent portion is connected to the electrode core. One end of the bent portion away from the extension portion extends out of the housing and is connected to the positioning portion.

17. The battery according to claim 16, wherein There are a plurality of the bent portions, and the plurality of bent portions are all connected to the positioning portion.

18. An electrical device, characterized in that, It includes an electrical device and the battery according to any one of claims 15-17, and the battery is adapted to supply power to the electrical device.

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