Collector plate assembly, battery, energy storage device and electric equipment

Abstract

The utility model discloses a collector plate assembly, a battery, an energy storage device and electric equipment. The current collecting plate assembly comprises a current collecting plate, an insulating part and a connecting part, and the connecting part is arranged between the current collecting plate and the insulating part and used for connecting the current collecting plate and the insulating part. The connecting piece can be used for connecting the current collecting plate and the insulating piece to realize integration of the current collecting plate and the insulating piece, so that the current collecting plate can be mounted based on the whole current collecting plate assembly during subsequent mounting, the mounting is simple and convenient, and the mounting yield can be ensured.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and more specifically, to a collecting plate assembly, a battery, an energy storage device, and an electrical equipment. Background Art

[0002] When producing batteries, the tabs of the battery cells need to be welded to the collector plates so that the current on the tabs can flow into the collector plates, and then flow to the outside of the battery through the collector plates and the poles. During welding, in order to prevent the high-temperature laser from damaging the internal structure of the battery cell, such as the diaphragm in the battery cell, it is often necessary to add an insulating part between the tabs and the collector plates, so that when welding the tabs and the collector plates, the insulating part can be used to reduce the high temperature transferred to the internal structure of the battery cell. However, the insulating part is usually made of polypropylene (PP) and is relatively thin, resulting in low structural stability of the insulating part. The low structural stability will cause problems such as difficulty in installation when the insulating part is installed on the tabs. For example, the insulating part is easy to deform, cannot be pressed, and is easy to skew, resulting in assembly difficulties and high defective rates. Utility Model Content

[0003] Embodiments of the present application provide a current collecting plate assembly, a battery, an energy storage device, and an electrical equipment.

[0004] The current collecting plate assembly provided in the embodiment of the present application includes a current collecting plate, an insulating member and a connecting member, wherein the connecting member is disposed between the current collecting plate and the insulating member and is used to connect the current collecting plate and the insulating member.

[0005] In some embodiments, the collecting plate assembly is provided with a through channel, and the channel includes a first channel; the collecting plate is provided with a through hole, the insulating member is provided with a through hole, and the connecting member is provided with a through hole, and the through hole, the through hole and the through hole are correspondingly connected to form the first channel.

[0006] In certain embodiments, the collecting plate assembly is provided with a through channel, and the channel includes a second channel; the insulating member is provided with a through hole, and the connecting member and the collecting plate both avoid the through hole, so that the through hole forms the second channel.

[0007] In some embodiments, the collecting plate assembly is provided with a through channel, and the channel includes a third channel; the collecting plate is provided with a through hole, and the insulating member is provided with a through hole, and the through hole is correspondingly connected to the through hole to form the third channel.

[0008] In some embodiments, the current collecting plate is provided with a through hole, and the current collecting plate includes a body and a boss. The body includes a first surface and a second surface opposite to each other, the through hole is located on the body and penetrates the first surface and the second surface. The boss protrudes and extends from the first surface in a direction away from the insulating member.

[0009] In some embodiments, the distance between the through hole and the boss is smaller than the distance between the through hole and the edge of the body.

[0010] In certain embodiments, when the through-hole is square, the side wall of the body includes a circumferential portion and a flat portion, and an inner side surface of the through-hole is flush with an outer side surface of the flat portion.

[0011] In some embodiments, in a plane perpendicular to the axial direction of the current collecting plate, a projection range of the current collecting plate does not exceed a projection range of the insulating member.

[0012] In certain embodiments, in a plane perpendicular to the axial direction of the collecting plate, a range of a projection of the collecting plate is consistent with a range of a projection of the connecting member.

[0013] The battery provided in the embodiment of the present application comprises a housing, a battery cell and a current collecting plate assembly as described in any of the above embodiments. The housing is provided with a receiving cavity. The battery cell is installed in the receiving cavity, and the battery cell comprises a tab. In the height direction of the housing, the insulating member is closer to the tab than the current collecting plate, and the tab is electrically connected to the current collecting plate.

[0014] In some embodiments, a pole is provided on the top of the housing, and the pole is connected to the boss of the collecting plate.

[0015] In certain embodiments, the current collecting plate assembly is provided with a through channel, and the electrode tab passes through the channel and is electrically connected to the current collecting plate.

[0016] In certain embodiments, a gap is defined between the current collecting plate assembly and the housing, and the electrode tab passes through the gap and is electrically connected to the current collecting plate.

[0017] The present application also provides an energy storage device, which includes the battery described in any of the above embodiments.

[0018] The present application also provides an electric device, the electric device comprising an electric device and an energy storage device as described in any one of the above embodiments. The electric device is electrically connected to the energy storage device.

[0019] In the current collecting plate assembly, battery, energy storage device and electrical equipment of the present application, the connector can be used to connect the current collecting plate and the insulating member to achieve the integration of the current collecting plate and the insulating member, so that the subsequent installation can be based on the entire current collecting plate assembly, which is simple and convenient and can ensure the installation yield.

[0020] Additional aspects and advantages of the embodiments of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0022] Figure 1 is a three-dimensional schematic diagram of a current collecting plate assembly according to certain embodiments of the present application;

[0023] Figure 2 yes Figure 1 An exploded schematic diagram of the collector plate assembly is shown;

[0024] Figure 3 is an exploded schematic diagram of a current collecting plate assembly according to some other embodiments of the present application;

[0025] Figure 4 is a cross-sectional schematic diagram of a battery according to certain embodiments of the present application;

[0026] Figure 5 yes Figure 4 A three-dimensional schematic diagram of a partial structure of a battery shown;

[0027] Figure 6 is a schematic diagram of a module of an energy storage device according to some embodiments of the present application;

[0028] Figure 7 It is a module schematic diagram of an electrical equipment in certain embodiments of the present application.

[0029] Description of main component symbols:

[0030] 1000. Electrical equipment;

[0031] 100. Energy storage device; 300. Power consumption device;

[0032] 10. Battery;

[0033] 11. Collector assembly; 111. Collector; 1111. Through hole; 1113. Body; 11131. First surface; 11133. Second surface; 11135. Circumferential portion; 11137. Plane portion; 1115. Boss; 113. Insulator; 1131. Through hole; 115. Connector; 1151. Through hole; 117. Channel; 1171. First channel; 1173. Second channel; 1175. Third channel;

[0034] 13. Shell; 131. Accommodating cavity; 133. Pole;

[0035] 15, battery cell; 151, pole ear; 1511, first pole ear; 1513, second pole ear; 1515, fourth pole ear;

[0036] 17. Gap;

[0037] 30. Box body; 31. First part; 33. Second part. DETAILED DESCRIPTION

[0038] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the embodiments of the present application, and cannot be understood as limiting the embodiments of the present application.

[0039] In the description of the present application, it should be understood that the terms "thickness", "upper", "top", "bottom", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0040] In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. In an example, it can be a fixed connection, or a detachable connection, or an integral connection; it can be a mechanical connection, or an electrical connection, or they can communicate with each other; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements.

[0041] In the embodiments of the present application, a first feature being “above” or “below” a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being “above”, “above”, and “above” a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0042] See also Figure 1 and Figure 4 The collecting plate assembly 11 provided in the embodiment of the present application includes a collecting plate 111 , an insulating member 113 and a connecting member 115 . The connecting member 115 is disposed between the collecting plate 111 and the insulating member 113 for connecting the collecting plate 111 and the insulating member 113 .

[0043] Specifically, the battery cell 15 is the most basic component of the battery 10, and is usually an electrochemical device encapsulated in a metal housing 13. It is a unit for storing and releasing electrical energy, and converts chemical energy into electrical energy through chemical reactions. The tabs 151 are metal conductors that lead the positive and negative electrodes from the battery cell 15.

[0044] The collector plate 111 is an electronic component, which is mainly used to connect multiple devices in the circuit. The main function of the collector plate 111 is to concentrate the current and distribute it effectively, ensuring that the current can flow evenly and stably through the various components connected to it. The collector plate 111 in the battery 10 is mainly used to collect the current of the battery cell 15 of the battery 10, and output 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 can be connected to the pole 133 and input current to the pole 133. The current received by the pole 133 can flow to the collector plate 111, and then flow to the battery cell 15 to complete the charging of the battery 10.

[0045] The insulating member 113 is a device that is resistant to high temperatures and has good electrical insulation performance. For example, the insulating member 113 can be made of polypropylene (PP) or polyimide. The insulating member 113 is usually arranged between the current collecting plate 111 and the pole lug 151, so that the current collecting plate 111 and the pole lug 151 can be welded on the insulating member 113, thereby preventing the high-temperature laser from directly irradiating other components of the battery cell 15, causing damage to other components of the battery cell 15, such as damage to the diaphragm caused by high-temperature laser irradiation, thereby ensuring the safety of other components of the battery cell 15. At the same time, the insulating member 113 can also ensure that most of the current of the pole lug 151 will not flow to the insulating member 113, but can flow smoothly to the current collecting plate 111, thereby reducing the loss of current and improving the utilization rate of current.

[0046] The connector 115 is an element that plays a connecting role when two or more elements are connected into one. The connector 115 is arranged between the current collecting plate 111 and the insulating member 113 to connect the current collecting plate 111 and the insulating member 113, thereby realizing the integration of the current collecting plate 111 and the insulating member 113. For example, the connector 115 is adhesive-backed. When it is necessary to connect the insulating member 113 and the current collecting plate 111, the protective film on one side of the connector 115 can be firstly torn off by equipment, and the current collecting plate 111 is bonded to this side. Then the protective film on the other side of the connector 115 is torn off, and the insulating member 113 is bonded to this side. After the split current collecting plate 111 and the split insulating member 113 are bonded by the split adhesive backing, the insulating member 113 and the current collecting plate 111 form an integrated current collecting plate assembly 11. The connector 115 may also be made of a material with good electrical insulation properties to ensure that most of the current of the pole lug 151 can flow smoothly to the current collecting plate 111, thereby improving the utilization rate of the current.

[0047] The pole lug 151 can be electrically connected to the current collecting disk 111, and the pole lug 151 can pass through the insulating member 113 or bypass the insulating member 113, so as to contact and electrically connect with the current collecting disk 111. For example, a through channel 117 can be provided on the current collecting disk assembly 11, so that the pole lug 151 can smoothly pass through the current collecting disk assembly 11 through the channel 117 and be electrically connected to the current collecting disk 111. Alternatively, there is a gap 17 between the current collecting disk assembly 11 and the housing 13, and the pole lug 151 passes through the gap 17 and is electrically connected to the current collecting disk 111.

[0048] Since the insulating member 113 has good electrical insulation performance, most of the current of the pole ear 151 will flow directly to the collecting plate 111, thereby ensuring a high current utilization rate. At the same time, the insulating member 113 is located between the pole ear 151 and the collecting plate 111, so that when the pole ear 151 and the collecting plate 111 are welded, the insulating member 113 can play a protective role to prevent the laser from damaging the battery cell 15.

[0049] After the connector 115 connects the current collecting plate 111 and the insulating member 113, an integrated current collecting plate assembly 11 is formed. In the subsequent installation of the battery 10, the current collecting plate assembly 11 can be installed as a whole. The material of the current collecting plate 111 is usually selected from metals with good electrical conductivity and elasticity, and the structural stability is high. During the installation process, there will be no installation problems such as easy deformation, inability to press, or easy skewness. Therefore, the current collecting plate 111 can be used to improve the structural stability of the current collecting plate assembly 11, so that the current collecting plate assembly 11 can also avoid the occurrence of installation problems such as easy deformation, inability to press, or high defective rate during the installation process. In this way, the installation problems caused by the structural stability of the insulating member 113 when it is installed alone are avoided, thereby improving the installation convenience and installation yield of the insulating member 113 and even the entire current collecting plate assembly 11. At the same time, the assembly of the insulating part 113 and the collecting plate 111 of the present application is relatively simple, and the subsequent installation difficulty of the collecting plate assembly 11 is also relatively low. There is no need to worry about the installation problems that are easily encountered when the insulating part 113 is installed alone. Therefore, the collecting plate assembly 11 and even the battery 10 of the present application can achieve high-speed automation, thereby ensuring high manufacturing efficiency and good quality.

[0050] In the collecting plate assembly 11 of the embodiment of the present application, the connector 115 can be used to connect the collecting plate 111 and the insulating member 113 to achieve the integration of the collecting plate 111 and the insulating member 113, so that subsequent installation can be performed based on the entire collecting plate assembly 11, which is simple and convenient and can ensure the installation yield.

[0051] See also Figure 1 and Figure 4 In some embodiments, the current collecting disk assembly 11 is provided with a through channel 117 for the pole ear 151 to pass through the channel 117 and be electrically connected to the current collecting disk 111, wherein the channel 117 at least passes through the insulating member 113 to ensure that when an insulating member 113 is provided between the pole ear 151 and the current collecting disk 111, the pole ear 151 can pass through the insulating member 113 to be electrically connected to the current collecting disk 111. For example, the pole ear 151 is a sheet structure. After the pole ear 151 passes through the current collecting disk assembly 11 from the channel 117, it can be folded back and electrically connected to the current collecting disk 111 to ensure that the connection area between the pole ear 151 and the current collecting disk 111 is sufficient, thereby ensuring that the current of the pole ear 151 can flow smoothly to the current collecting disk 111.

[0052] There are many specific forms of the channel 117, which can be determined according to the structure and relative position relationship of the collecting plate 111, the insulating member 113 and the connecting member 115. It only needs to ensure that the pole lug 151 can be connected to the collecting plate 111 after passing through the channel 117.

[0053] See also Figure 1 , Figure 2 and Figure 4In some embodiments, the channel 117 includes a first channel 1171; the current collecting plate 111 is provided with a through hole 1111, the insulating member 113 is provided with a through hole 1131, and the connecting member 115 is provided with a through hole 1151. The through hole 1111, the through hole 1131 and the through hole 1151 are correspondingly connected, that is, in a plane perpendicular to the axial direction of the current collecting plate 111, the through hole 1111, the through hole 1131 and the through hole 1151 at least partially overlap to form the first channel 1171. At this time, please combine Figure 5 The pole lug 151 includes a first pole lug 1511 , and the first channel 1171 is used for the first pole lug 1511 to pass through, so that the first pole lug 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 pole lug 1511 can flow smoothly to the current collecting plate 111 .

[0054] See also Figure 1 , Figure 2 and Figure 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 connector 115 and the collector plate 111 avoid the through hole 1131, that is, in a plane perpendicular to the axial direction of the collector plate 111, the projection of the through hole 1131 is located outside the projection range of the connector 115 and the projection range of the collector plate 111, so as to prevent the connector 115 and the collector plate 111 from blocking the pole ear 151 passing through the through hole 1131. 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. Please combine Figure 5 The pole lug 151 includes a second pole lug 1513 , and the second channel 1173 is used for the second pole lug 1513 to pass through, so that the second pole lug 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 pole lug 1513 can flow smoothly to the current collecting plate 111 .

[0055] See also Figure 1 , Figure 3 and Figure 4In some other embodiments, the channel 117 includes a third channel 1175; the collecting plate 111 is provided with a through hole 1111, and the insulating member 113 is provided with a through hole 1131, the through hole 1111 is connected to the through hole 1131 correspondingly, and the connector 115 avoids the through hole 1111 and the through hole 1131, that is, 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 at least partially overlap, and the projection of the through hole 1151 is located outside the projections of the connector 115 and the collecting plate 111, so as to prevent the connector 115 from affecting the passage of the pole ear 151 and forming the third channel 1175. At this time, the pole ear 151 includes a third pole ear (not shown), and the third channel 1175 is used for the third pole ear to pass through, so that the third pole ear can pass through the third channel 1175 and connect to the collecting plate 111 after passing through the third channel 1175, so that the current of the third pole ear can flow smoothly to the collecting plate 111.

[0056] 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 can be one, two or more, which can be determined according to the structure, shape and size of the current collecting plate 111, the insulating member 113 and the connecting member 115, and the number of the pole lugs 151, as long as the pole lugs 151 can smoothly pass through the channel 117 and connect to the current collecting plate 111. Correspondingly, the pole lug 151 on one side of the battery cell 15 includes at least one of the first pole lug 1511, the second pole lug 1513 and the third pole lug (not shown), as long as they are arranged corresponding to the first channel 1171, the second channel 1173 and the third channel 1175. In addition, it should be noted that the pole lug 151 on one side of the battery cell 15 can be a positive pole lug or a negative pole lug. 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 all be positive tabs or negative tabs.

[0057] In some embodiments, at least one of the through hole 1111 , the through hole 1131 , and the through hole 1151 is in a crescent shape, a square shape, a circle shape, an ellipse shape, or a racetrack shape.

[0058] Specifically, when the current collecting plate assembly 11 includes the first channel 1171, the shapes of the through hole 1111, the through hole 1131 and the through hole 1151 constituting the first channel 1171 may be the same or different. For example, the through hole 1111, the through hole 1131 and the through hole 1151 are all crescent-shaped. For another example, the through hole 1111 and the through hole 1131 are crescent-shaped, and the through hole 1151 is square. For another example, the through hole 1111 is elliptical, the through hole 1131 is crescent-shaped, and the through hole 1151 is square.

[0059] When the collecting plate assembly 11 includes the second channel 1173 , the through-holes 1131 constituting the second channel 1173 may be in any one of a crescent shape, a square shape, a circle shape, an ellipse shape, or a racetrack shape.

[0060] When the collecting plate assembly 11 includes the third channel 1175, the shapes of the through hole 1111 and the through hole 1131 constituting the third channel 1175 may be the same or different. For example, the through hole 1111 and the through hole 1131 are both crescent-shaped. For another example, the through hole 1111 is elliptical and the through hole 1131 is crescent-shaped.

[0061] In the case where the collecting plate assembly 11 includes any two or three of the first channel 1171, the second channel 1173, and the third channel 1175, the shapes of the through holes 1111 constituting different channels 117 may be the same or different, and the shapes of the through holes 1131 constituting different channels 117 may be the same or different. For example, the through hole 1111 constituting the first channel 1171 is crescent-shaped, and the through hole 1111 constituting the third channel 1175 is square. For another example, the through hole 1111 constituting the first channel 1171 and the through hole 1111 constituting the third channel 1175 are both circular.

[0062] In some embodiments, the number of through holes 1111, perforations 1131 and through holes 1151 can be one, two, three, four or more, so that the number of first channels 1171, second channels 1173 and third channels 1175 can be one, two, three, four or more.

[0063] In the case where there are two, three, four or more first channels 1171, second channels 1173 or third channels 1175, the shapes of the same type of holes corresponding to the channels 117 of the same type may be the same or different. For example, in the case where there are two second channels 1173, the perforation 1131 corresponding to one second channel 1173 may be crescent-shaped, and the perforation 1131 corresponding to the other second channel 1173 may be square; or, both perforations 1131 may be circular. For another example, in the case where there are two third channels 1175, the through hole 1111 corresponding to one third channel 1175 may be crescent-shaped, and the through hole 1111 corresponding to the other third channel 1175 may be square; or, both through holes 1111 may be circular.

[0064] In particular, the shapes of the two or three holes constituting a channel 117 may be the same or different, and the sizes of the two or three holes constituting a channel 117 may be the same or different, as long as it is ensured that in a plane perpendicular to the axial direction of the collecting plate 111, the projections of the two or three holes constituting a channel 117 at least partially overlap, so that the pole ear 151 can use the overlapping part to pass through the collecting plate assembly 11 from one side of the collecting plate assembly 11 to the other side of the collecting plate assembly 11.

[0065] See also Figure 2 and Figure 4 In some embodiments, the current collecting plate 111 includes a body 1113 and a boss 1115. The body 1113 includes a first surface 11131 and a second surface 11133 opposite to each other. The through hole 1111 is located on the body 1113 and penetrates the first surface 11131 and the second surface 11133. The first surface 11131 of the body 1113 can be used to connect with the pole ear 151, and the second surface 11133 can be used to connect with the connecting member 115. The boss 1115 protrudes and extends 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 components of the battery 10, such as the pole 133 of the battery 10, can be connected to the boss 1115, so that the current in the current collecting plate 111 is uniformly transmitted to other components of the battery 10 by using the boss 1115. Correspondingly, an external power source can be connected to the pole 133 and input current into the pole 133. The current received by the pole 133 can flow to the boss 1115, and flow to the main body 1113 through the boss 1115. Finally, the current flowing to the main body 1113 flows to the battery cell 15 through the pole ear 151 to complete the charging of the battery 10.

[0066] When the pole lug 151 is connected to the current collecting disk 111, the pole lug 151 extends along the axial direction of the current collecting disk 111, and can continue to extend for a distance after passing through the through hole 1111, and then bends in the direction of the first surface 11131 of the current collecting disk 111, so that the pole lug 151 fits with the first surface 11131, and then the pole lug 151 forms a physical and electrical connection with the first surface 11131 by welding. After the pole lug 151 and the first surface 11131 are welded, the current of the pole lug 151 can flow to the first surface 11131. At this time, the boss 1115 can transmit the current of the body 1113 to the outside of the current collecting disk assembly 11, thereby completing the transmission of electric energy. The boss 1115 can also transmit external electric energy to the pole lug 151, and then transmit it to the battery cell 15 through the pole lug 151, so as to realize the charging of the battery cell 15.

[0067] See also Figure 1 , Figure 2 and Figure 4In some embodiments, the distance D1 between the through hole 1111 and the boss 1115 is smaller than the distance D2 between the through hole 1111 and the edge of the body 1113. Specifically, the distance between the through hole 1111 and the boss 1115 can 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 can 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 edge 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, which ensures that when the tab 151 is connected to the body 1113, there is sufficient space between the through hole 1111 and the edge for welding the tab 151. At this time, the tab 151 will be bent toward the edge of the body 1113 and welded to the area between the through hole 1111 and the edge of the body 1113. In this way, the tab 151 does not need to be bent toward the boss 1115 for welding, thereby ensuring that the body 1113 can smoothly collect the current of the tab 151 on the one hand, and on the other hand, the tab 151 does not affect the connection between the boss 1115 and the external pole 133, ensuring that the internal and external currents can be stably transmitted.

[0068] See also Figure 1 and Figure 4 In some embodiments, when the through hole 1131 is square, the side wall of the body 1113 includes a circumferential portion 11135 and a flat portion 11137, and an inner side surface of the through hole 1131 is flush with an outer side surface of the flat 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 flat portion 11137 facing the through hole 1131. In this way, the body 1113 can avoid the through hole 1131, so that the tab 151 can smoothly pass through the through hole 1131 and connect to the current collecting plate 111. At the same time, the distance between the through hole 1131 and the main body 1113 can also be reduced, so as to avoid the situation where the pole ear 151 needs to extend a longer distance to be connected to the main body 1113 when the distance between the through hole 1131 and the main body 1113 is far. In this way, while ensuring the smooth connection between the pole ear 151 and the main body 1113, the material used for the pole ear 151 can be reduced to save the manufacturing cost of the collecting plate assembly 11. At the same time, the bending part of the pole ear 151 can be supported by one side of the through hole 1131 and one side of the flat part 11137 at the same time, so that the stress concentration at the bending part of the pole ear 151 is greatly reduced, thereby avoiding breakage.

[0069] See also Figure 1 and Figure 2In some embodiments, in a plane perpendicular to the axial direction of the collecting disk 111, the projection range of the collecting disk 111 does not exceed the projection range of the insulating member 113, that is, in a plane perpendicular to the axial direction of the collecting disk 111, the projection range of the collecting disk 111 is within the projection range of the insulating member 113. This ensures that when the pole tab 151 is welded to the collecting disk 111, the high-temperature laser will not exceed the range of the insulating member 113, so that the insulating member 113 can be well insulated, thereby ensuring that the pole tab 151 can be normally welded to the collecting disk 111 while the high-temperature laser will not irradiate and damage other components of the battery cell 15.

[0070] See also Figure 1 and Figure 2 In some embodiments, in a plane perpendicular to the axial direction of the collecting disc 111, the projection range of the collecting disc 111 is consistent with the projection range of the connecting member 115, that is, in a plane perpendicular to the axial direction of the collecting disc 111, the projection range of the collecting disc 111 coincides with the projection range of the insulating member 113. In this way, the connection stability between the collecting disc 111 and the connecting member 115 can be enhanced, so as to enhance the connection stability between the collecting disc 111 and the insulating member 113, thereby ensuring that the collecting disc 111 and the insulating member 113 will not fall off when the collecting disc assembly 11 is subsequently installed, so that the structural stability of the collecting disc 111 can be used to avoid the installation problems encountered when the insulating member 113 is installed alone.

[0071] In some other embodiments, see Figure 3 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 connected to the through hole 1131, and the connector 115 avoids the through hole 1111 and the through hole 1131. The projection range of the connector 115 is located within the projection range of the collecting plate 111. At this time, the shape and size of the edge of the connector 115 can be consistent with the shape and size of the edge of the collecting plate 111, and the area of ​​the connector 115 corresponding to the through hole 1111 is a hollow area. In this way, on the one hand, it can be ensured that the connector 115 can avoid the through hole 1111, and on the other hand, it can be ensured that all areas of the collecting plate 111 except the through hole 1111 can be connected to the connector 115, thereby improving the connection stability between the collecting plate 111 and the connector 115.

[0072] See also Figure 1 and Figure 4The battery 10 provided in the embodiment of the present application includes the current collecting plate assembly 11 of any of the above embodiments, a shell 13 and a battery cell 15. The shell 13 is provided with a receiving cavity 131. The battery cell 15 is installed in the receiving cavity 131, and the battery cell 15 includes a pole lug 151. The battery cell 15 is installed in the receiving cavity 131, and the battery cell 15 includes a pole lug 151. In the height direction of the shell 13, the insulating member 113 is closer to the pole lug 151 than the current collecting plate 111, and the pole lug 151 is electrically connected to the current collecting plate 111.

[0073] Specifically, the battery 10 is a device for energy conversion and storage, which can convert chemical energy or physical energy into electrical energy. The battery 10 is generally composed of an electrolyte solution and metal electrodes, which are designed as a cup, a tank or other container, or a partial space of a composite container to generate electric current.

[0074] The shell 13 is a structure with a cavity for accommodating other components. The other components of the battery 10 can be installed in the shell 13. The shell 13 can be used to isolate the other components of the battery 10 from the outside world to prevent the other components from being easily damaged by external forces and prevent external impurities, such as dust, from entering the other components and affecting the normal operation of the other components.

[0075] In the height direction of the shell 13, the insulating member 113 is closer to the pole ear 151 than the current collecting plate 111, and the pole ear 151 can 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 can be used to isolate other components of the laser contact battery cell 15 when the pole ear 151 is welded. At the same time, when assembling the battery 10, the entire current collecting plate assembly 11 can be installed as a whole, so that the current collecting plate 111 can be used to improve the structural stability of the current collecting plate assembly 11, that is, to improve the structural stability of the insulating member 113, so that the problems caused by the low structural stability of the insulating member 113 when the insulating member 113 is installed alone can be avoided, thereby improving the installation convenience and installation yield of the insulating member 113 and even the entire current collecting plate assembly 11.

[0076] See also Figure 1 and Figure 4In some embodiments, a pole 133 is provided on the top of the shell 13. The pole 133 is a key component of the battery 10 and plays a role in connecting and conducting electricity in the battery 10. One end of the pole 133 is connected to the boss 1115 of the current collecting disk 111, and the other end is connected to an external conductor or to one pole of an adjacent single cell 10 in the battery pack. The current of the current collecting disk 111 can be uniformly transmitted to the pole 133 through the boss 1115, so that the pole 133 can receive the current and transmit the received current to the outside of the battery 10, thereby ensuring the smooth flow of the current inside the battery 10 and the connection of the external circuit. Correspondingly, the external circuit can be connected to the pole 133 and input current to the pole 133. The current received by the pole 133 can 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.

[0077] There are many ways to connect the current collecting plate 111 and the pole lug 151 .

[0078] See also Figure 1 , Figure 3 and Figure 4 In some embodiments, the current collecting disc assembly 11 is provided with a through channel 117, and the tab 151 passes through the channel 117 and is electrically connected to the current collecting disc 111. For example, the current collecting disc assembly 11 is provided with a first channel 1171, a second channel 1173, or a third channel 1175, and the tab 151 can pass through any one of the channels 117 and pass through the insulating member 113 and be electrically connected to the current collecting disc 111.

[0079] See also Figure 4 and Figure 5 In other embodiments, there is a gap 17 between the current collecting disc assembly 11 and the housing 13, and the pole lug 151 passes through the gap 17 and is electrically connected to the current collecting disc 111. Specifically, in a plane perpendicular to the axial direction of the current collecting disc 111, the projection range of the current collecting disc 111 and the projection of the connecting member 115 are located within the projection range of the insulating member 113. At the same time, in a plane perpendicular to the axial direction of the current collecting disc 111, the projection of the insulating member 113 is located within the projection range of the battery cell 15, and there is a gap 17 between the current collecting disc assembly 11 and the housing 13 to prevent the current collecting disc assembly 11 and the housing 13 from rubbing violently, thereby ensuring the safety of the current collecting disc assembly 11 and the housing 13. Therefore, the pole lug 151 can extend from the area outside the projection of the insulating member 113 in the projection of the battery cell 15, and pass through the gap 17 until it is connected to the area corresponding to the gap 17 in the current collecting disc 111. In particular, a portion of the edge of the 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, and the flush edges correspond to the gap 17, for example Figure 5The pole ear 151 also includes a fourth pole ear 1515, which can pass through the gap 17 and be connected to the collecting plate 111, so that the distance between the collecting plate 111 and the gap 17 can be reduced, so that the pole ear 151 can quickly reach the collecting plate 111 after passing through the gap 17, thereby reducing the material used for the pole ear 151 and saving the cost of the collecting plate assembly 11.

[0080] In the battery 10 of the embodiment of the present application, the connector 115 of the current collecting plate assembly 11 can be used to connect the current collecting plate 111 and the insulating member 113 to achieve the integration of the current collecting plate 111 and the insulating member 113, so that subsequent installation can be based on the entire current collecting plate assembly 11, which is simple and convenient and can ensure the installation yield.

[0081] See also Figure 1 , Figure 4 and Figure 6 The energy storage device 100 provided in the embodiment of the present application includes the battery 10 of any of the above embodiments.

[0082] Specifically, the energy storage device 100 includes a box 30 and a battery 10, and the battery 10 is contained in the box 30. The box 30 is used to provide a storage space for the battery 10, and the box 30 can adopt a variety of structures. In some embodiments, the box 30 may include a first part 31 and a second part 33, the first part 31 and the second part 33 cover each other, and the first part 31 and the second part 33 jointly define a storage space for accommodating the battery 10. The second part 33 may be a hollow structure with one end open, the first part 31 may be a plate-like structure, and the first part 31 covers the open side of the second part 33, so that the first part 31 and the second part 33 jointly define a storage space; the first part 31 and the second part 33 may also be hollow structures with one side open, and the open side of the first part 31 covers the open side of the second part 33. Of course, the box 30 formed by the first part 31 and the second part 33 may be in a variety of shapes, such as a cylinder or a cuboid.

[0083] In the energy storage device 100, there may be multiple batteries 10, and the multiple batteries 10 may be connected in series, in parallel, or in a mixed connection. A mixed connection means that the multiple batteries 10 are both connected in series and in parallel. The multiple batteries 10 may be directly connected in series, in parallel, or in a mixed connection, and then the whole formed by the multiple batteries 10 is accommodated in the box 30; of course, the energy storage device 100 may also be a module formed by connecting multiple batteries 10 in series, in parallel, or in a mixed connection, and then the multiple modules are connected in series, in parallel, or in a mixed connection to form a whole, and accommodated in the box 30. The energy storage device 100 may also include other structures, for example, the energy storage device 100 may also include a converging component for realizing electrical connection between the multiple batteries 10.

[0084] In the energy storage device 100 of the embodiment of the present application, the connector 115 of the current collecting plate assembly 11 of the battery 10 can be used to connect the current collecting plate 111 and the insulating member 113 to achieve the integration of the current collecting plate 111 and the insulating member 113, so that subsequent installation can be performed based on the entire current collecting plate assembly 11, which is simple and convenient and can ensure the installation yield.

[0085] See also Figure 1 , Figure 4 and Figure 7 The electric device 1000 provided in the embodiment of the present application includes the energy storage device 100 and the electric device 300 of any of the above embodiments, and the electric device 300 is electrically connected to the energy storage device 100.

[0086] Specifically, the electrical device 300 refers to equipment and devices that use electrical energy to work or provide necessary functions. The electrical device 300 is electrically connected to the energy storage device 100, and the electrical device 300 can use the electrical energy transmitted by the energy storage device 100 to work.

[0087] The battery 10 disclosed in the present application can be used in an electric device 1000 that uses the energy storage device 100 as a power source or various energy storage systems that use the energy storage device 100 as an energy storage element. The electric device 1000 can be, but is not limited to, a mobile phone, a tablet, a laptop computer, an electric toy, an electric tool, a battery car, an electric car, a ship or a spacecraft, etc. Among them, the electric toy can include a fixed or mobile electric toy, for example, a game console, an electric car toy, an electric ship toy, and an electric airplane toy, etc., and the spacecraft can include an airplane (including a drone), a rocket, a space shuttle, and a spacecraft, etc.

[0088] This application is only explained by taking the electric device 1000 as a vehicle as an example. The electric device 1000 can be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. An energy storage device 100 is arranged inside the electric device 1000. The energy storage device 100 can be arranged at the bottom, head or tail of the electric device 1000, but is not limited to this. For example, the energy storage device 100 can also be arranged in the area below the seat of the electric device 1000. The energy storage device 100 can be used to power the electric device 1000. For example, the energy storage device 100 can be used as an operating power source for the electric device 1000. The power-consuming device 300 is any device that uses electric energy to achieve a specific function. When the power-consuming device 1000 is a vehicle, the power-consuming device 300 may include a controller and a motor. The controller is used to control the energy storage device 100 to supply power to the motor, for example, to meet the power requirements of starting, navigating and driving the vehicle. The power-consuming device 300 may also include a dashboard and a car audio system. After obtaining electric energy, the dashboard can be used to display various parameters and abnormal conditions, and the car audio system can be used to play music after obtaining electric energy.

[0089] In some embodiments of the present application, the energy storage device 100 can not only serve as an operating power source for the electrical device 1000, but also serve as a driving power source for the electrical device 1000, replacing or partially replacing fuel or natural gas to provide driving power for the electrical device 1000.

[0090] In the electrical equipment 1000 of the embodiment of the present application, the connector 115 of the current collecting plate assembly 11 of the battery 10 can be used to connect the current collecting plate 111 and the insulating member 113 to achieve the integration of the current collecting plate 111 and the insulating member 113, so that subsequent installation can be carried out based on the entire current collecting plate assembly 11, which is simple and convenient and can ensure the installation yield.

[0091] In the description of this specification, the description with reference to the terms "certain embodiments", "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0092] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, unless otherwise clearly and specifically defined.

[0093] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application. The scope of the present application is defined by the claims and their equivalents.

Claims

1. A collecting plate assembly (11), characterized in that: include: A collecting plate (111); an insulating member (113); and A connecting member (115), the connecting member (115) being arranged between the current collecting plate (111) and the insulating member (113) and being used for connecting the current collecting plate (111) and the insulating member (113).

2. The collecting plate assembly (11) according to claim 1, characterized in that: The collecting plate assembly (11) is provided with a through channel (117), and the channel (117) includes a first channel (1171); the collecting plate (111) is provided with a through hole (1111), the insulating member (113) is provided with a through hole (1131), and the connecting member (115) is provided with a through hole (1151); the through hole (1111), the through hole (1131) and the through hole (1151) are correspondingly connected to form the first channel (1171).

3. The collecting plate assembly (11) according to claim 1, characterized in that: The collecting plate assembly (11) is provided with a through channel (117), and 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) both avoid the through hole (1131), so that the through hole (1131) forms the second channel (1173).

4. The collecting plate assembly (11) according to claim 1, characterized in that: The collecting plate assembly (11) is provided with a through channel (117), and the channel (117) includes a third channel (1175); the collecting plate (111) is provided with a through hole (1111), and the insulating member (113) is provided with a through hole (1131), and the through hole (1111) is correspondingly connected to the through hole (1131) to form the third channel (1175).

5. The collecting plate assembly (11) according to any one of claims 2 to 4, characterized in that: The current collecting plate (111) is provided with a through hole (1111) extending therethrough, and the current collecting plate (111) comprises: A body (1113), wherein the body (1113) comprises a first surface (11131) and a second surface (11133) opposite to each other, and the through hole (1111) is located on the body (1113) and penetrates the first surface (11131) and the second surface (11133); and A boss (1115), wherein the boss (1115) protrudes and extends from the first surface (11131) in a direction away from the insulating member (113).

6. The collecting plate assembly (11) according to claim 5, characterized in that: 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).

7. The collecting plate assembly (11) according to claim 5, characterized in that: When the through hole (1131) is square, the side wall of the main 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).

8. The collecting plate assembly (11) according to claim 1, characterized in that: In a plane perpendicular to the axial direction of the collecting plate (111), the projection range of the collecting plate (111) does not exceed the projection range of the insulating member (113).

9. The collecting plate assembly (11) according to claim 1, characterized in that: In a plane perpendicular to the axial direction of the collecting plate (111), the range of the projection of the collecting plate (111) is consistent with the range of the projection of the connecting member (115).

10. A battery, characterized in that: include: A housing (13), wherein the housing (13) is provided with a receiving cavity (131); A battery cell (15), the battery cell (15) being installed in the receiving cavity (131), the battery cell (15) comprising a tab (151); and In the collecting plate assembly (11) described in any one of claims 1 to 9, in the height direction of the shell (13), the insulating member (113) is closer to the pole ear (151) than the collecting plate (111), and the pole ear (151) is electrically connected to the collecting plate (111).

11. The battery according to claim 10, characterized in that A pole (133) is provided on the top of the shell (13), and the pole (133) is connected to the boss (1115) of the current collecting plate (111).

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

13. The battery according to claim 10, characterized in that A gap (17) is provided between the current collecting plate assembly (11) and the housing (13), and the pole lug (151) passes through the gap (17) and is electrically connected to the current collecting plate (111).

14. An energy storage device (100), characterized in that: include: The battery (10) according to any one of claims 10 to 13.

15. An electrical device (1000), characterized in that: include: The energy storage device (100) according to claim 14, and An electric device (300), wherein the electric device (300) is electrically connected to the energy storage device (100).

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