CN222851626U - Current collecting disc assembly, battery, energy storage device and electric equipment - Google Patents

Abstract

The application discloses a current collecting disc assembly, a battery, an energy storage device and electric equipment. The current collecting disc assembly comprises a current collecting disc, an insulating piece and a connecting piece, wherein the connecting piece is arranged between the current collecting disc and the insulating piece and is used for connecting the current collecting disc and the insulating piece. The connecting piece can be used for connecting the current collecting disc and the insulating piece so as to realize the integration of the current collecting disc and the insulating piece, so that the current collecting disc can be installed based on the whole current collecting disc assembly in the subsequent installation, the method is simple and convenient, and the installation yield can be ensured.

Description

Current collecting disc assembly, battery, energy storage device and electric equipment

Technical Field

The application relates to the technical field of batteries, in particular to a current collecting disc assembly, a battery, an energy storage device and electric equipment.

Background

When the battery is produced, the lugs of the battery core are required to be welded with the current collecting disc, so that current on the lugs can flow into the current collecting disc and then flow to the outside of the battery through the current collecting disc and the pole. In order to avoid that the high-temperature laser damages the internal structure of the battery cell, such as the diaphragm in the battery cell, an insulating part is often needed to be added between the tab and the current collecting disc during welding, so that the insulating part is used for reducing the high temperature transmitted to the internal structure of the battery cell during welding the tab and the current collecting disc. However, the insulating member is usually made of polypropylene (PP), and has a relatively thin thickness, which results in lower structural stability of the insulating member, and the lower structural stability may cause problems such as difficulty in mounting the insulating member on the tab, for example, the insulating member is easy to deform and cannot be pressed, and is easy to skew, which results in difficult assembly and high reject ratio.

Disclosure of utility model

The embodiment of the application provides a current collecting disc assembly, a battery, an energy storage device and electric equipment.

The current collecting disc assembly comprises a current collecting disc, an insulating piece and a connecting piece, wherein the connecting piece is arranged between the current collecting disc and the insulating piece and is used for connecting the current collecting disc and the insulating piece.

In some embodiments, the current collecting disc assembly is provided with a through channel, the channel comprises a first channel, the current collecting disc is provided with a through hole, the insulating piece is provided with a through hole, the connecting piece is provided with a through hole, and the through hole, the through hole and the through hole are correspondingly communicated to form the first channel.

In some embodiments, the current collecting plate assembly is provided with a through channel, the channel comprises a second channel, the insulating piece is provided with a through perforation, and the connecting piece and the current collecting plate are both away from the perforation so that the perforation forms the second channel.

In some embodiments, the current collecting disc assembly is provided with a through channel, the channel comprises a third channel, the current collecting disc is provided with a through hole, the insulating piece is provided with a through hole, and the through hole is correspondingly communicated with the through hole to form the third channel.

In some embodiments, the collecting tray is provided with a through hole penetrating through, and the collecting tray comprises a body and a boss. The body comprises a first surface and a second surface which are opposite to each other, and the through hole is positioned on the body and penetrates through the first surface and the second surface. The boss protrudes from the first face in a direction away from the insulating member.

In some embodiments, the distance between the through hole and the boss is less than the distance between the through hole and the edge of the body.

In some embodiments, where the perforations are square, the side wall of the body includes a circumferential portion and a planar portion, an inner side of the perforations being flush with an outer side of the planar portion.

In some embodiments, the extent of the projection of the collector plate in a plane perpendicular to the axial direction of the collector plate does not exceed the extent of the projection of the insulator.

In certain embodiments, the extent of the projection of the manifold disk coincides with the extent of the projection of the connector in a plane perpendicular to the axial direction of the manifold disk.

The battery provided by the embodiment of the application comprises a shell, an electric core and the current collecting disc assembly in any embodiment. The shell is provided with a containing cavity. The battery cell is arranged in the accommodating cavity and comprises a tab. In the height direction of the shell, the insulating piece is closer to the tab than the current collecting disc, and the tab is electrically connected with the current collecting disc.

In some embodiments, a post is provided on the top of the housing, the post being connected to a boss of the current collecting plate.

In certain embodiments, the current collecting plate assembly is provided with a through passage through which the tab passes and is electrically connected to the current collecting plate.

In some embodiments, a gap is provided between the current collecting plate assembly and the housing, and the tab passes through the gap and is electrically connected with the current collecting plate.

The application also provides an energy storage device, which comprises the battery in any embodiment.

The application also provides electric equipment, which comprises an electric device and the energy storage device in any embodiment. The electricity utilization device is electrically connected with the energy storage device.

In the current collecting disc assembly, the battery, the energy storage device and the electric equipment, the connecting piece can be used for connecting the current collecting disc and the insulating piece so as to realize the integration of the current collecting disc and the insulating piece, so that the current collecting disc assembly can be used for mounting in the follow-up mounting process, the installation is simple and convenient, and the mounting yield can be ensured.

Additional aspects and advantages of embodiments of the application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of embodiments of the application.

Drawings

The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

FIG. 1 is a schematic perspective view of a manifold plate assembly according to certain embodiments of the present application;

FIG. 2 is an exploded schematic view of the current collecting tray assembly shown in FIG. 1;

FIG. 3 is an exploded schematic view of a current collecting tray assembly according to further embodiments of the present application;

FIG. 4 is a schematic cross-sectional view of a battery according to certain embodiments of the present application;

fig. 5 is a perspective view illustrating a partial structure of the battery shown in fig. 4;

FIG. 6 is a schematic block diagram of an energy storage device according to certain embodiments of the present application;

fig. 7 is a block diagram of a powered device according to some embodiments of the application.

Description of main reference numerals:

1000. An electric device;

100. 300, an electric device;

10. A battery;

11. Collector plate assembly 111, collector plate 1111, through hole 1113, body 11131, first face 11133, second face 11135, circumferential portion 11137, planar portion 1115, boss 113, insulator 1131, through hole 115, connector 1151, through hole 117, channel 1171, first channel 1173, second channel 1175, third channel;

13. The shell, 131, the accommodating cavity, 133, the pole;

15. 151, pole ears, 1511, first pole ears, 1513, second pole ears, 1515, fourth pole ears;

17. a gap;

30. 31 parts of the box body, 33 parts of the first part and the second part.

Detailed Description

Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the embodiments of the present application and are not to be construed as limiting the embodiments of the present application.

In the description of the present application, it should be understood that the terms "thickness," "upper," "top," "bottom," "inner," "outer," and the like indicate an orientation or a positional relationship based on that shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the application. And the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more features. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present application, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly and, in one example, may be fixedly connected, or detachably connected, or integrally connected, may be mechanically connected, or electrically connected, or may be in communication with each other, may be directly connected, or may be indirectly connected through an intermediary, or may be in communication with each other or the interaction of two elements.

In an embodiment of the application, a first feature "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

Referring to fig. 1 and 4, a current collecting plate assembly 11 according to an embodiment of the present application includes a current collecting plate 111, an insulating member 113 and a connecting member 115, wherein the connecting member 115 is disposed between the current collecting plate 111 and the insulating member 113, and is used for connecting the current collecting plate 111 and the insulating member 113.

Specifically, the Cell 15 (Battery Cell) is the most basic component of the Battery 10, and is typically an electrochemical device enclosed in a metal housing 13. It is a unit that stores and releases electric energy, and converts chemical energy into electric energy through chemical reaction. The tab 151 is a metal conductor that leads the positive and negative electrodes from the cell 15.

The current collecting plate 111 is an electronic component, and is mainly used for connecting a plurality of devices in a circuit. The main purpose of the collector plate 111 is to concentrate and distribute the current efficiently, ensuring that the current flows evenly and stably through the various components connected thereto. The current collecting plate 111 in the battery 10 is mainly used for collecting the current of the electric core 15 of the battery 10 and outputting the current to the pole 133 of the battery 10 so that the current can be supplied to the outside through the pole 133. Correspondingly, an external power source may be connected to the pole 133 and input a current to the pole 133, and the current received by the pole 133 may flow to the current collecting plate 111 and then to the battery cell 15 to complete the charging of the battery 10.

The insulating member 113 is a device resistant to high temperature and good in electrical insulation performance, and for example, the insulating member 113 may be made of polypropylene (PP) or polyimide. The insulating member 113 is generally disposed between the current collecting plate 111 and the tab 151, so that the current collecting plate 111 and the tab 151 can be welded on the insulating member 113, thereby avoiding the damage to other components of the battery cell 15 caused by the direct irradiation of high-temperature laser to other components of the battery cell 15, such as the damage caused by the irradiation of the diaphragm with high-temperature laser, and ensuring the safety of other components of the battery cell 15. Meanwhile, the insulator 113 can ensure that most of the current of the tab 151 does not flow to the insulator 113 and can smoothly flow to the current collecting plate 111, thereby reducing the loss of the current and improving the utilization rate of the current.

The connector 115 is a member that functions as a connection when two or more members are connected together. The connection member 115 is disposed between the current collecting tray 111 and the insulating member 113 to connect the current collecting tray 111 and the insulating member 113, thereby achieving integration of the current collecting tray 111 and the insulating member 113. For example, the connector 115 is a back adhesive. In the case where it is desired to connect the insulating member 113 and the current collecting plate 111, the protective film on one side of the connecting member 115 may be first torn by using an apparatus and the current collecting plate 111 may be bonded to that side. The protective film on the other side of the connector 115 is then torn and the insulator 113 is bonded to that side. After the split current collecting plate 111 and the split insulating member 113 are bonded by the split back adhesive, the insulating member 113 and the current collecting plate 111 form an integrated current collecting plate assembly 11. The connecting piece 115 may be made of a material with better electrical insulation property, so as to ensure that most of the current of the tab 151 can smoothly flow to the current collecting plate 111, thereby improving the utilization rate of the current.

The tab 151 may be electrically connected with the current collecting tray 111, and the tab 151 may pass through the insulating member 113 or bypass the insulating member 113, thereby contacting and electrically connecting with the current collecting tray 111. For example, the current collecting plate assembly 11 may be provided with a through passage 117 so that the tab 151 may smoothly pass through the current collecting plate assembly 11 through the passage 117 and be electrically connected to the current collecting plate 111. Or the collector plate assembly 11 and the housing 13 have a gap 17 therebetween, and the tab 151 passes through the gap 17 and is electrically connected with the collector plate 111.

Since the insulating member 113 has good electrical insulation properties, most of the current of the tab 151 directly flows to the current collecting plate 111, thereby ensuring high current utilization. Meanwhile, the insulating member 113 is positioned between the tab 151 and the current collecting plate 111, so that the insulating member 113 can play a role in protecting the battery cell 15 from laser damage when the tab 151 and the current collecting plate 111 are welded.

After connecting the collector plate 111 and the insulator 113, the connection member 115 forms an integrated collector plate assembly 11, and the collector plate assembly 11 may be installed as a unit during subsequent installation of the battery 10. The material of the current collecting plate 111 is usually metal with good conductivity and elasticity, and has high structural stability, and the installation problems of easy deformation, no pressure or easy deflection are not encountered in the installation process. Therefore, the structural stability of the current collecting tray assembly 11 can be improved by using the current collecting tray 111, so that the current collecting tray assembly 11 can also avoid the installation problems such as easy deformation, incapacitation or high reject ratio in the installation process, and thus the installation problem caused by the structural stability of the insulating member 113 when the insulating member 113 is independently installed can be avoided, and the installation convenience and the installation yield of the insulating member 113 and even the whole current collecting tray assembly 11 can be improved. Meanwhile, the insulator 113 and the current collecting plate 111 are simpler to assemble, the subsequent current collecting plate assembly 11 is lower in installation difficulty, and the problem of installation easily encountered when the insulator 113 is independently installed is not needed to worry, so that the current collecting plate assembly 11 and even the battery 10 can realize high-speed automation, thereby ensuring higher manufacturing efficiency and better quality.

In the current collecting plate assembly 11 according to the embodiment of the application, the connecting piece 115 can be used for connecting the current collecting plate 111 and the insulating piece 113 so as to integrate the current collecting plate 111 and the insulating piece 113, so that the current collecting plate assembly 11 can be installed based on the whole current collecting plate assembly 11 in the subsequent installation, the installation is simple and convenient, and the installation yield can be ensured.

Referring to fig. 1 and 4, in some embodiments, the current collecting plate assembly 11 is provided with a through channel 117 for the tab 151 to pass through the channel 117 and electrically connect with the current collecting plate 111, wherein the channel 117 at least passes through the insulating member 113 to ensure that the tab 151 can pass through the insulating member 113 to be electrically connected with the current collecting plate 111 in the case that the insulating member 113 is disposed between the tab 151 and the current collecting plate 111, for example, the tab 151 has a sheet structure, and after passing through the current collecting plate assembly 11 from the channel 117, the tab 151 can be electrically connected with the current collecting plate 111 after being folded back to ensure that the connection area between the tab 151 and the current collecting plate 111 is sufficient, thereby ensuring that the current of the tab 151 can smoothly flow onto the current collecting plate 111.

The specific form of the channel 117 is various and can be determined according to the structure and the relative positional relationship of the current collecting plate 111, the insulating member 113 and the connecting member 115, and it is only necessary to ensure that the tab 151 can be connected to the current collecting plate 111 after passing through the channel 117.

Referring to fig. 1, 2 and 4, in some embodiments, the channel 117 includes a first channel 1171, the current collecting plate 111 has a through hole 1111 therethrough, the insulating member 113 has a through hole 1131 therethrough, and the connecting member 115 has a through hole 1151 therethrough. The through holes 1111, 1131 and 1151 are correspondingly connected, i.e. in a plane perpendicular to the axial direction of the current collecting plate 111, the through holes 1111, 1131 and 1151 are at least partially overlapped to form a first channel 1171. At this time, referring to fig. 5, the tab 151 includes a first tab 1511, and the first channel 1171 is used for the first tab 1511 to pass through, so that the first tab 1511 can pass through the first channel 1171 and be connected to the current collecting plate 111 after passing through the first channel 1171, so that the current of the first tab 1511 can smoothly flow onto the current collecting plate 111.

Referring to fig. 1, 2 and 4, in other embodiments, the channel 117 includes a second channel 1173, the insulating member 113 is provided with a through hole 1131, and the connecting member 115 and the collecting plate 111 are both away from the through hole 1131, i.e. in a plane perpendicular to the axial direction of the collecting plate 111, the projection of the through hole 1131 is located outside the projection range of the connecting member 115 and outside the projection range of the collecting plate 111, so as to prevent the connecting member 115 and the collecting plate 111 from blocking the tab 151 passing through the through hole 1131, and at this time, the through hole 1131 forms the second channel 1173, in other words, the second channel 1173 is only composed of the through hole 1131. Referring to fig. 5, the tab 151 includes a second tab 1513, and a second channel 1173 is used for the second tab 1513 to pass through, so that the second tab 1513 can pass through the second channel 1173 and be connected to the current collecting plate 111 after passing through the second channel 1173, so that the current of the second tab 1513 can smoothly flow onto the current collecting plate 111.

Referring to fig. 1, 3 and 4, in still other embodiments, the channel 117 includes a third channel 1175, the collecting plate 111 is provided with a through hole 1111, the insulating member 113 is provided with a through hole 1131, the through hole 1111 is correspondingly communicated with the through hole 1131, the connecting member 115 is away from the through hole 1111 and the through hole 1131, i.e. in a plane perpendicular to the axial direction of the collecting plate 111, the projection of the through hole 1131 and the projection of the through hole 1111 are at least partially overlapped, and the projection of the through hole 1151 is located outside the projections of the connecting member 115 and the collecting plate 111, so as to prevent the connecting member 115 from affecting the passing of the tab 151 and form the third channel 1175. At this time, the tab 151 includes a third tab (not shown), and the third channel 1175 is used for the third tab to pass through, so that the third tab can pass through the third channel 1175 and be connected to the current collecting plate 111 after passing through the third channel 1175, so that the current of the third tab can smoothly flow to the current collecting plate 111.

It should be noted that, the current collecting plate assembly 11 includes at least one of the first channel 1171, the second channel 1173 and the third channel 1175, and the number of the first channel 1171, the second channel 1173 and the third channel 1175 is not limited, and may be one, two or more, specifically, may be determined according to the structures, shapes and sizes of the current collecting plate 111, the insulating member 113 and the connecting member 115, and the number of the tabs 151, so long as the tabs 151 can smoothly pass through the channels 117 and be connected with the current collecting plate 111. Correspondingly, the tab 151 on one side of the battery cell 15 includes at least one of the first tab 1511, the second tab 1513, and the third tab (not shown), so long as the tab is disposed corresponding to the first channel 1171, the second channel 1173, and the third channel 1175. The tab 151 on one side of the battery cell 15 may be a positive electrode tab or a negative electrode tab. For example, when the tab 151 on one side of the battery cell 15 includes the first tab 1511, the second tab 1513 and the third tab, the first tab 1511, the second tab 1513 and the third tab may be both positive tabs or both negative tabs.

In certain implementations, at least one of the through holes 1111, 1131, and 1151 is crescent-shaped, square-shaped, circular-shaped, oval-shaped, or racetrack-shaped.

Specifically, in the case where the current collecting tray assembly 11 includes the first passage 1171, the shapes of the through holes 1111, the perforations 1131, and the through holes 1151 constituting the first passage 1171 may be the same or different. For example, through hole 1111, through hole 1131 and through hole 1151 are crescent-shaped. For another example, through-holes 1111 and perforations 1131 are crescent-shaped and through-holes 1151 are square. For another example, the through hole 1111 has an elliptical shape, the through hole 1131 has a crescent shape, and the through hole 1151 has a square shape.

Where the manifold plate assembly 11 includes the second channel 1173, the perforations 1131 that make up the second channel 1173 may be any of crescent, square, circular, oval, or racetrack shaped.

In the case where the current collecting tray assembly 11 includes the third passage 1175, the shapes of the through holes 1111 and the perforations 1131 constituting the third passage 1175 may be the same or different. For example, the through holes 1111 and the perforations 1131 are crescent shaped. For another example, the through hole 1111 has an elliptical shape and the through hole 1131 has a crescent shape.

In the case where the current collecting tray assembly 11 includes any two or three of the first channel 1171, the second channel 1173, and the third channel 1175, the shape of the through holes 1111 constituting the different channels 117 may be the same or different, and the shape of the through holes 1131 constituting the different channels 117 may be the same or different. For example, the through hole 1111 constituting the first passage 1171 is crescent-shaped, and the through hole 1111 constituting the third passage 1175 is square-shaped. For another example, the through hole 1111 constituting the first passage 1171 and the through hole 1111 constituting the third passage 1175 are both circular.

In some embodiments, the number of through holes 1111, vias 1131, and through holes 1151 may be one, two, three, four, or more, such that the number of first channels 1171, second channels 1173, and third channels 1175 may be one, two, three, four, or more.

In the case where the first channel 1171, the second channel 1173, or the third channel 1175 is two, three, four, or more, the shapes of the same type of holes corresponding to the channels 117 belonging to the same type may be the same or different. For example, in the case where there are two second channels 1173, the perforations 1131 corresponding to one second channel 1173 may be crescent-shaped, the perforations 1131 corresponding to the other second channel 1173 may be square-shaped, or both the perforations 1131 may be circular-shaped. For another example, in the case where the third passages 1175 are two, the through holes 1111 corresponding to one third passage 1175 may be crescent-shaped, the through holes 1111 corresponding to the other third passage 1175 may be square-shaped, or both the through holes 1111 may be circular-shaped.

In particular, the shape of the two or three holes constituting one channel 117 may be the same or different, and the size of the two or three holes constituting one channel 117 may be the same or different, so long as it is ensured that the projections of the two or three holes constituting one channel 117 at least partially overlap in a plane perpendicular to the axial direction of the current collecting plate 111, so that the tab 151 can pass through the current collecting plate assembly 11 from one side of the current collecting plate assembly 11 to the other side of the current collecting plate assembly 11 with the overlapped portions.

Referring to fig. 2 and 4, in some embodiments, manifold plate 111 includes a body 1113 and a boss 1115. The body 1113 includes a first side 11131 and a second side 11133 opposite to each other, the through hole 1111 is formed in the body 1113 and penetrates through the first side 11131 and the second side 11133, the first side 11131 of the body 1113 is used for connecting with the tab 151, and the second side 11133 is used for connecting with the connecting member 115. The boss 1115 protrudes from the first surface 11131 in a direction away from the insulating member 113 to form a structure protruding from the body 1113, so that other elements of the battery 10, such as the post 133 of the battery 10, can be connected with the boss 1115 to uniformly transmit the current in the current collecting tray 111 to the other elements of the battery 10 by using the boss 1115. Correspondingly, an external power source may be connected to the pole 133 and input a current to the pole 133, the current received by the pole 133 may flow to the boss 1115 and flow to the body 1113 through the boss 1115, and finally the current flowing to the body 1113 flows to the battery cell 15 through the tab 151 to complete the charging of the battery 10.

When the tab 151 is connected to the current collecting plate 111, the tab 151 extends along the axial direction of the current collecting plate 111 and can continue to extend for a certain distance after passing through the through hole 1111, and then bends towards the direction of the first surface 11131 of the current collecting plate 111, so that the tab 151 is attached to the first surface 11131, and the subsequent tab 151 is physically and electrically connected to the first surface 11131 by welding. After the tab 151 and the first surface 11131 are welded, the current of the tab 151 may flow to the first surface 11131, and at this time, the boss 1115 may transmit the current of the body 1113 to the outside of the current collecting plate assembly 11, thereby completing the transmission of electric energy. The boss 1115 can also transmit external electric energy to the tab 151, and then transmit the electric energy to the battery cell 15 through the tab 151, so as to realize charging of the battery cell 15.

Referring to fig. 1, 2 and 4, in some embodiments, a distance D1 between the through hole 1111 and the boss 1115 is smaller than a distance D2 between the through hole 1111 and an edge of the body 1113. Specifically, the distance between the through hole 1111 and the boss 1115 may be considered as the distance between the side of the through hole 1111 close to the boss 1115 and the side of the boss 1115 close to the through hole 1111, and the distance between the through hole 1111 and the edge of the body 1113 may be considered as the distance between the side of the through hole 1111 close to the edge of the body 1113 and the side of the body 1113 close to the through hole 1111. The distance between the through hole 1111 and the boss 1115 is smaller than the distance between the through hole 1111 and the edge of the body 1113, so that when the tab 151 is connected to the body 1113, sufficient space is provided between the through hole 1111 and the edge for welding the tab 151, and the tab 151 is bent towards the edge of the body 1113 and welded with the region between the through hole 1111 and the edge of the body 1113. Therefore, the tab 151 is not required to be bent towards the boss 1115 for welding, so that on one hand, the body 1113 can smoothly collect the current of the tab 151, and on the other hand, the tab 151 does not influence the connection between the boss 1115 and the external pole 133, and stable transmission between the internal current and the external current is ensured.

Referring to fig. 1 and 4, in some embodiments, where the through hole 1131 is square, the sidewall of the body 1113 includes a circumferential portion 11135 and a planar portion 11137, and an inner side surface of the through hole 1131 is flush with an outer side surface of the planar portion 11137, that is, the inner side surface of the through hole 1131 facing the body 1113 is flush with the outer side surface of the planar portion 11137 facing the through hole 1131. Thus, the body 1113 can avoid the through hole 1131, so that the tab 151 can smoothly pass through the through hole 1131 and be connected with the current collecting plate 111. Meanwhile, the distance between the perforation 1131 and the body 1113 can be reduced, the situation that the lug 151 needs to extend for a long distance to be connected with the body 1113 is avoided under the condition that the distance between the perforation 1131 and the body 1113 is far, so that the material consumption of the lug 151 is reduced under the condition that the lug 151 and the body 1113 are ensured to be smoothly connected, the manufacturing cost of the current collecting disc assembly 11 is saved, meanwhile, the bending part of the lug 151 can be simultaneously propped against one side of the perforation 1131 and one side of the plane 11137, the stress concentration of the bending part of the lug 151 is greatly reduced, and breakage can be avoided.

Referring to fig. 1 and 2, in some embodiments, the projection range of the current collecting plate 111 in the plane perpendicular to the axial direction of the current collecting plate 111 does not exceed the projection range of the insulating member 113, that is, the projection range of the current collecting plate 111 is located within the projection range of the insulating member 113 in the plane perpendicular to the axial direction of the current collecting plate 111, so that it is ensured that the high temperature laser does not exceed the range of the insulating member 113 when the tab 151 is welded to the current collecting plate 111, so that the insulating member 113 can be well insulated, thereby ensuring that the tab 151 can be normally welded to the current collecting plate 111, and the high temperature laser does not irradiate and damage other elements of the battery cell 15.

Referring to fig. 1 and 2, in some embodiments, the projected extent of the manifold plate 111 coincides with the projected extent of the connector 115 in a plane perpendicular to the axial direction of the manifold plate 111, i.e., the projected extent of the manifold plate 111 coincides with the projected extent of the insulator 113 in a plane perpendicular to the axial direction of the manifold plate 111. In this way, the connection stability of the current collecting plate 111 and the connecting member 115 can be enhanced, so as to enhance the connection stability of the current collecting plate 111 and the insulating member 113, thereby ensuring that the current collecting plate 111 and the insulating member 113 will not fall off when the current collecting plate assembly 11 is installed later, and avoiding the installation problem encountered when the insulating member 113 is independently installed by utilizing the structural stability of the current collecting plate 111.

In other embodiments, referring to fig. 3, in the case that the current collecting plate 111 is provided with a through hole 1111 through which the insulating member 113 is provided with a through hole 1131 through which the through hole 1111 is correspondingly communicated with the through hole 1131, and the connecting member 115 is located within the projection range of the current collecting plate 111 under the condition that the connecting member 115 is away from the through hole 1111 and the through hole 1131, the shape and the size of the edge of the connecting member 115 can be consistent with the shape and the size of the edge of the current collecting plate 111, and the area of the connecting member 115 corresponding to the through hole 1111 is a hollowed-out area, so that on one hand, the connecting member 115 can be prevented from being separated from the through hole 1111, and on the other hand, all the areas of the current collecting plate 111 except the through hole 1111 can be ensured to be connected with the connecting member 115, thereby improving the connection stability of the current collecting plate 111 and the connecting member 115.

Referring to fig. 1 and 4, a battery 10 according to an embodiment of the present application includes a current collecting plate assembly 11, a housing 13, and a battery cell 15 according to any of the above embodiments. The housing 13 is provided with a receiving chamber 131. The battery cell 15 is mounted in the accommodating cavity 131, and the battery cell 15 includes a tab 151. The battery cell 15 is mounted in the accommodating cavity 131, and the battery cell 15 includes a tab 151. In the height direction of the case 13, the insulator 113 is closer to the tab 151 than the current collecting plate 111, and the tab 151 is electrically connected to the current collecting plate 111.

Specifically, the battery 10 is an energy conversion and storage device capable of converting chemical or physical energy into electric energy. The cell 10 is typically composed of an electrolyte solution and metal electrodes, and these components are designed as cups, cells or other containers, or as part of the space of a composite container, in order to generate an electrical current.

The case 13 has a structure having a cavity for receiving other components, the other components of the battery 10 may be mounted in the case 13, and the case 13 may serve to isolate the other components of the battery 10 from the outside, to prevent the other components from being easily damaged by external force, to prevent foreign substances such as dust from entering the other components, and to influence the normal operation of the other components.

In the height direction of the housing 13, the insulating member 113 is closer to the tab 151 than the current collecting plate 111, and the tab 151 may bypass the insulating member 113 or pass through the insulating member 113 to be electrically connected to the current collecting plate 111, so that the insulating member 113 may be used to isolate the laser from contacting other elements of the battery cell 15 in case of welding the tab 151. Meanwhile, when the battery 10 is assembled, the whole current collecting disc assembly 11 can be installed as a whole, so that the current collecting disc 111 can be utilized to improve the structural stability of the current collecting disc assembly 11, namely, the structural stability of the insulating member 113 is improved, so that the problem caused by lower structural stability when the insulating member 113 is independently installed can be avoided, and the installation convenience and the installation yield of the insulating member 113 and even the whole current collecting disc assembly 11 are improved.

Referring to fig. 1 and 4, in some embodiments, a pole 133 is disposed on the top of the housing 13, and the pole 133 is a key component of the battery 10, and the pole 133 plays a role in connection and conduction in the battery 10. One end of the pole post 133 is connected to the boss 1115 of the current collecting plate 111, and the other end is connected to either an external conductor or one pole of the adjacent unit cell 10 in the battery pack. The current of the current collecting plate 111 can be uniformly transferred to the pole post 133 through the boss 1115, so that the pole post 133 can receive the current and transfer the received current to the outside of the battery 10, thereby ensuring smooth current flow inside the battery 10 and connection of external circuits. Correspondingly, an external circuit may be connected to the pole 133 and input current to the pole 133, and the current received by the pole 133 may flow to the boss 1115, and flow to the body 1113 through the boss 1115, and finally flow to the battery cell 15 to complete the charging of the battery 10.

There are various connection modes of the current collecting plate 111 and the tab 151.

Referring to fig. 1, 3 and 4, in some embodiments, the current collecting plate assembly 11 is provided with a through channel 117, and a tab 151 passes through the channel 117 and is electrically connected to the current collecting plate 111. For example, the current collecting plate assembly 11 is provided with a first channel 1171, a second channel 1173, or a third channel 1175, and the tab 151 may pass through the insulator 113 through any one of the channels 117 and be electrically connected to the current collecting plate 111.

Referring to fig. 4 and 5, in other embodiments, a gap 17 is provided between the current collecting plate assembly 11 and the housing 13, and the tab 151 passes through the gap 17 and is electrically connected to the current collecting plate 111. Specifically, in a plane perpendicular to the axial direction of the current collecting plate 111, the projection range of the current collecting plate 111 and the projection of the connection member 115 are located within the projection range of the insulating member 113. Meanwhile, in a plane perpendicular to the axial direction of the current collecting plate 111, the projection of the insulating member 113 is located within the projection range of the battery cell 15, and a gap 17 is formed between the current collecting plate assembly 11 and the housing 13 to prevent the current collecting plate assembly 11 from rubbing with the housing 13 severely, thereby ensuring the safety of the current collecting plate assembly 11 and the housing 13. Thus, the tab 151 may protrude from the projection of the battery cell 15 in an area other than the projection of the insulating member 113, and pass through the gap 17 until being connected to an area corresponding to the gap 17 in the current collecting plate 111. In particular, a portion of the edge of the current collecting plate 111, a portion of the edge of the connecting member 115 and a portion of the edge of the insulating member 113 may be flush, the flush edge corresponding to the gap 17, for example, fig. 5, the tab 151 further includes a fourth tab 1515, and the fourth tab 1515 may pass through the gap 17 and be connected to the current collecting plate 111, so that the distance between the current collecting plate 111 and the gap 17 may be reduced, so that the tab 151 may reach the current collecting plate 111 quickly after passing through the gap 17, thereby reducing the material consumption of the tab 151 and saving the cost of the current collecting plate assembly 11.

In the battery 10 according to the embodiment of the application, the connecting piece 115 of the current collecting disc assembly 11 can be used for connecting the current collecting disc 111 and the insulating piece 113, so that the integration of the current collecting disc 111 and the insulating piece 113 is realized, the subsequent installation can be performed based on the whole current collecting disc assembly 11, the installation is simple and convenient, and the installation yield can be ensured.

Referring to fig. 1, 4 and 6, an energy storage device 100 according to an embodiment of the present application includes a battery 10 according to any of the above embodiments.

Specifically, the energy storage device 100 includes a case 30 and a battery 10, and the battery 10 is accommodated in the case 30. The case 30 is used to provide a receiving space for the battery 10, and the case 30 may have various structures. In some embodiments, the case 30 may include a first portion 31 and a second portion 33, the first portion 31 and the second portion 33 being overlapped with each other, the first portion 31 and the second portion 33 together defining an accommodating space for accommodating the battery 10. The second portion 33 may be a hollow structure with one end open, the first portion 31 may be a plate-shaped structure, and the first portion 31 covers the open side of the second portion 33, so that the first portion 31 and the second portion 33 together define a containing space, the first portion 31 and the second portion 33 may be hollow structures with one side open, and the open side of the first portion 31 covers the open side of the second portion 33. Of course, the case 30 formed by the first portion 31 and the second portion 33 may be of various shapes, such as a cylinder, a rectangular parallelepiped, or the like.

In the energy storage device 100, the plurality of batteries 10 may be connected in series, parallel or a series-parallel connection between the plurality of batteries 10, wherein the series-parallel connection refers to that the plurality of batteries 10 are connected in series or in parallel. The batteries 10 can be directly connected in series or parallel or connected in series and then the whole body formed by the batteries 10 is accommodated in the box body 30, however, the energy storage device 100 can also be in a form of a module formed by connecting the batteries 10 in series or parallel or connected in series, and then the modules are connected in series or parallel or connected in series and then are accommodated in the box body 30. The energy storage device 100 may also include other structures, for example, the energy storage device 100 may also include a bussing member for making electrical connection between the plurality of cells 10.

In the energy storage device 100 according to the embodiment of the application, the connecting piece 115 of the current collecting disc assembly 11 of the battery 10 can be used for connecting the current collecting disc 111 and the insulating piece 113, so that the integration of the current collecting disc 111 and the insulating piece 113 is realized, the installation can be performed based on the whole current collecting disc assembly 11 in the subsequent installation, the installation is simple and convenient, and the installation yield can be ensured.

Referring to fig. 1, fig. 4, and fig. 7, an electric device 1000 according to an embodiment of the present application includes an energy storage device 100 and an electric device 300 according to any of the above embodiments, where the electric device 300 is electrically connected to the energy storage device 100.

Specifically, the electric device 300 refers to equipment and devices that operate using electric energy or provide necessary functions, the electric device 300 is electrically connected to the energy storage device 100, and the electric device 300 may operate using electric energy delivered by the energy storage device 100.

The battery 10 disclosed in the present application may be used for a powered device 1000 using the energy storage device 100 as a power source or various energy storage systems using the energy storage device 100 as an energy storage element. Consumer 1000 may be, but is not limited to, a cell phone, tablet, notebook computer, electric toy, electric tool, battery car, electric car, ship, spacecraft, or the like. Among them, the electric toy may include fixed or mobile electric toys, such as game machines, electric car toys, electric ship toys, electric plane toys, and the like, and the spacecraft may include planes (including unmanned aerial vehicles), rockets, space planes, and spacecraft, and the like.

The present application is described using the electric device 1000 as an example of a vehicle. The electric equipment 1000 can be a fuel oil automobile, a fuel gas automobile or a new energy automobile, and the new energy automobile can be a pure electric automobile, a hybrid electric automobile or a range-extended automobile. The energy storage device 100 is disposed inside the electric device 1000, and the energy storage device 100 may be disposed at the bottom, the head or the tail of the electric device 1000, but not limited thereto, for example, the energy storage device 100 may also be disposed in a lower area of the seat of the electric device 1000. Energy storage device 100 may be used to power powered device 1000, for example, energy storage device 100 may be used as an operating power source for powered device 1000. The power utilization device 300 is a device for realizing specific functions by using electric energy, and in the case that the power utilization device 1000 is a vehicle, the power utilization device 300 may include a controller and a motor, the controller is used for controlling the energy storage device 100 to supply power to the motor, for example, for working power requirements during starting, navigation and driving of the vehicle, the power utilization device 300 may further include an instrument panel and a vehicle-mounted sound box, the instrument panel can be used for displaying various parameters and abnormal conditions after acquiring electric energy, and the vehicle-mounted sound box can be used for playing music after acquiring electric energy.

In some embodiments of the present application, the energy storage device 100 may not only be used as an operating power source of the electric device 1000, but also be used as a driving power source of the electric device 1000 to provide driving power for the electric device 1000 instead of or in part of fuel oil or natural gas.

In the electric equipment 1000 according to the embodiment of the application, the connecting piece 115 of the current collecting disc assembly 11 of the battery 10 can be used for connecting the current collecting disc 111 and the insulating piece 113 so as to realize the integration of the current collecting disc 111 and the insulating piece 113, so that the current collecting disc assembly 11 can be installed based on the whole current collecting disc assembly 11 in the subsequent installation, the installation is simple and convenient, and the installation yield can be ensured.

In the description of the present specification, reference to the terms "certain embodiments," "one embodiment," "some embodiments," "an exemplary embodiment," "an example," "a particular example," or "some examples" means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, unless specifically defined otherwise.

Although embodiments of the present application have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the application, and that variations, modifications, alternatives and variations may be made to the above embodiments by those skilled in the art within the scope of the application, which is defined by the claims and their equivalents.

Claims (15)

1. A current collecting tray assembly (11), comprising:

a collector tray (111);

insulating material (113)

And the connecting piece (115) is arranged between the current collecting disc (111) and the insulating piece (113) and is used for connecting the current collecting disc (111) and the insulating piece (113).

2. The current collecting tray assembly (11) according to claim 1, wherein the current collecting tray assembly (11) is provided with a through passage (117), the passage (117) comprises a first passage (1171), the current collecting tray (111) is provided with a through hole (1111) therethrough, the insulator (113) is provided with a through hole (1131) therethrough, the connector (115) is provided with a through hole (1151) therethrough, and the through hole (1111), the through hole (1131) and the through hole (1151) are correspondingly communicated to form the first passage (1171).

3. The current collecting tray assembly (11) according to claim 1, wherein the current collecting tray assembly (11) is provided with a through channel (117), the channel (117) comprises a second channel (1173), the insulating member (113) is provided with a through hole (1131), and the connecting member (115) and the current collecting tray (111) are both away from the through hole (1131) so that the through hole (1131) forms the second channel (1173).

4. The current collecting tray assembly (11) according to claim 1, wherein the current collecting tray assembly (11) is provided with a through channel (117), the channel (117) comprises a third channel (1175), the current collecting tray (111) is provided with a through hole (1111) therethrough, the insulator (113) is provided with a through hole (1131) therethrough, and the through hole (1111) communicates with the through hole (1131) to form the third channel (1175).

5. -Collector disc assembly (11) according to any of the claims 2-4, characterized in that the collector disc (111) is provided with through holes (1111) therethrough, the collector disc (111) comprising:

A body (1113), the body (1113) comprising a first face (11131) and a second face (11133) opposite each other, the through-hole (1111) being located on the body (1113) and penetrating the first face (11131) and the second face (11133), and

A boss (1115), the boss (1115) protruding from the first face (11131) in a direction away from the insulator (113).

6. The collector plate assembly (11) of claim 5 wherein the distance between said through hole (1111) and said boss (1115) is less than the distance of said through hole (1111) from the edge of said body (1113).

7. The current collecting plate assembly (11) according to claim 5, wherein, in case the perforation (1131) is square, the side wall of the body (1113) comprises a circumferential portion (11135) and a planar portion (11137), an inner side surface of the perforation (1131) being flush with an outer side surface of the planar portion (11137).

8. The collector disc assembly (11) according to claim 1, wherein the extent of the projection of the collector disc (111) in a plane perpendicular to the axial direction of the collector disc (111) does not exceed the extent of the projection of the insulator (113).

9. The collector disc assembly (11) of claim 1, wherein the extent of the projection of the collector disc (111) coincides with the extent of the projection of the connector (115) in a plane perpendicular to the axial direction of the collector disc (111).

10. A battery, comprising:

A housing (13), wherein the housing (13) is provided with a containing cavity (131);

A battery cell (15), wherein the battery cell (15) is arranged in the accommodating cavity (131), the battery cell (15) comprises a tab (151), and

The current collecting plate assembly (11) according to any one of claims 1 to 9, wherein the insulator (113) is closer to the tab (151) than the current collecting plate (111) in a height direction of the housing (13), and the tab (151) is electrically connected to the current collecting plate (111).

11. The battery according to claim 10, characterized in that the top of the housing (13) is provided with a post (133), the post (133) being connected with a boss (1115) of the collector plate (111).

12. The battery according to claim 10, characterized in that the current collecting plate assembly (11) is provided with a through passage (117), and the tab (151) passes through the passage (117) and is electrically connected with the current collecting plate (111).

13. The battery according to claim 10, characterized in that the current collecting plate assembly (11) has a gap (17) between the case (13), and the tab (151) passes through the gap (17) and is electrically connected with the current collecting plate (111).

14. An energy storage device (100), comprising:

The battery (10) of any of claims 10-13.

15. A powered device (1000), comprising:

The energy storage device (100) of claim 14, and

-An electrical device (300), the electrical device (300) being electrically connected to the energy storage device (100).