Battery cell pole assembly, battery module and battery

Abstract

The utility model relates to the technical field of energy storage devices, in particular to a battery cell pole assembly, a battery module and a battery, the battery cell pole assembly comprises a signal acquisition board, a conductive elastic piece and two battery cell poles, the two battery cell poles are connected in an inserted mode through the conductive elastic piece, the signal acquisition board comprises an acquisition board body and an acquisition lug fixed to the acquisition board body, and the acquisition lug is connected with the conductive elastic piece through the conductive elastic piece. The acquisition ear is used for being connected with the conductive elastic sheet in an inserted mode. The utility model aims to provide a battery cell pole assembly, a battery module and a battery in order to solve at least one technical problem related in the prior art.

Description

Technical Field

[0001] The present application relates to the technical field of energy storage devices, and in particular to a battery cell pole assembly, a battery module and a battery. Background Art

[0002] With the development of the new energy industry, electric vehicles are being used more and more widely. As the core component of electric vehicles, the research and development and production of power batteries have become the top priority of the electric vehicle industry. Existing power batteries are mostly made of multiple cells in groups. The poles of adjacent cells and the poles of the cells and the signal acquisition board are generally connected by welding, which makes the production efficiency low. Utility Model Content

[0003] The purpose of the present application is to provide a battery cell pole assembly, a battery module and a battery in response to at least one technical problem involved in the background technology.

[0004] In order to achieve the above objectives, this application adopts the following technical solutions:

[0005] One aspect of the present application provides a battery cell pole assembly, including a signal acquisition board, a conductive spring and two battery cell poles, the two battery cell poles are plugged through the conductive spring, the signal acquisition board includes an acquisition board body and a collection ear fixed to the acquisition board body, the collection ear is used to be plugged with the conductive spring.

[0006] Optionally, the battery cell pole includes a plug tongue, a pole body and a plug-in portion connected in sequence in a first direction, a slot is formed on the plug-in portion, a notch of the slot is arranged away from the pole body in the first direction, a position of the plug tongue in the second direction corresponds to a position of the slot, a size of the plug tongue in the second direction is not larger than a size of the slot in the second direction, and a position of the plug tongue in the third direction corresponds to a position of the slot, and the first direction, the second direction and the third direction are perpendicular to each other.

[0007] The beneficial effect of this technical solution is that it facilitates the plugging of two adjacent battery cell poles in the first direction.

[0008] Optionally, the conductive spring sheet is used to make pressure contact with an inner wall of a slot of one of the battery cell poles and an insertion tongue of another of the battery cell poles in the second direction.

[0009] Optionally, the conductive spring sheet is a U-shaped piece, and the conductive spring sheet is used to be sleeved on the plug tongue of the battery cell pole, and the opening of the conductive spring sheet is oriented in the same direction as the notch of the slot.

[0010] The beneficial effect of this technical solution is that in this way, the two side surfaces of the plug tongue in the second direction are separated and tensioned by the conductive spring sheet and the inner wall of the slot, thereby improving the reliability of the connection between the plug tongue, the conductive spring sheet and the inner wall of the slot.

[0011] Optionally, in the third direction, the size of the conductive spring sheet is larger than that of the plug-in portion, and the conductive spring sheet has a collecting mating end, which is used to extend out of the slot in the third direction and is used to be plugged with the collecting ear.

[0012] The beneficial effect of this technical solution is that the collecting ear is plugged into the collecting mating end extending from the plug-in portion, so that when the collecting ear is plugged into the conductive spring sheet, it is not easy to interfere with the plug tongue that is also plugged into the conductive spring sheet, so that the collecting ear and the conductive spring sheet can be plugged in more smoothly.

[0013] Optionally, the battery cell pole assembly provided in the present application further includes an insulating sleeve, the plug-in portion includes electrode clips arranged parallel to each other, the slot is formed between two of the electrode clips, and a mutually isolated plug-in tongue insertion cavity and two clip insertion cavities are formed in the insulating sleeve, the plug-in tongue insertion cavity is located between the two clip insertion cavities, the two clip insertion cavities are used to be mounted on the two electrode clips in a one-to-one manner, and the plug-in tongue insertion cavity is used to be mounted outside the plug-in tongue.

[0014] The beneficial effect of this technical solution is that: under normal circumstances, when the pole of a battery cell is electrically connected to the pole of the opposite electrode of the adjacent battery cell on one side, it is not electrically connected to the pole of the opposite electrode adjacent to the other side. When the battery cell pole described in the embodiment of the present application is used, the non-electrical connection can be achieved through the insulating sleeve. Specifically, the two electrode clips of one battery cell pole are respectively inserted into the two clip insertion cavities on the insulating sleeve, and the plug tongue of the other battery cell pole is inserted into the plug tongue insertion cavity of the insulating sleeve. On the one hand, this enables the battery cell poles of the two adjacent battery cells to be connected to each other to fix the positions of the two battery cells. On the other hand, it realizes the insulation isolation and non-electrical connection of the battery cell poles of the two battery cells.

[0015] Optionally, in the third direction, the size of the collecting ear is smaller than the size of the pole body.

[0016] The beneficial effect of this technical solution is that: that is, in the third direction, the size of the collecting ear is smaller than the distance between the conductive spring sheet and the insulating sleeve closest to the conductive spring sheet. In this way, when the collecting ear is plugged into the conductive spring sheet, the collecting ear can be first moved between the conductive spring sheet and the insulating sleeve, and then the collecting ear can be moved toward the opening of the conductive spring sheet and inserted into the conductive spring sheet. In this process, the movement of the collecting ear is not easy to interfere with the insulating sleeve.

[0017] Another aspect of the present application provides a battery module, including a copper busbar, two battery cell bodies and a battery cell pole assembly provided in the present application, wherein the two battery cell poles are connected to the two battery cell bodies in a one-to-one correspondence.

[0018] The battery cell pole assembly includes two conductive springs, which are matched with the two battery cell poles in a one-to-one manner. One conductive spring is plugged into the collection ear, and the other conductive spring is plugged into the copper busbar. The copper busbar is L-shaped or U-shaped.

[0019] Optionally, the battery module provided in the present application further includes a module protection cover, and the battery cell pole assembly is located between the module protection cover and the battery cell body in a direction perpendicular to the signal acquisition board.

[0020] The beneficial effect of this technical solution is that: in this way, the module protection cover can protect the signal acquisition board, the connection between the acquisition ear and the conductive spring sheet, the connection between the acquisition harness and the plug-in terminal, and each battery cell pole, so that when the battery collides with the outside world, the signal acquisition board and each battery cell pole are not easily damaged, and the connection between the acquisition ear and the conductive spring sheet and the connection between the acquisition harness and the plug-in terminal are not easily detached.

[0021] The third aspect of the present application provides a battery, including the battery module provided in the present application.

[0022] The technical solution provided by this application can achieve the following beneficial effects:

[0023] When using the battery cell pole assembly, battery module and battery provided by the present application, the two battery cell poles are first fixed one by one on the two battery cell bodies. When making the battery module, the two battery cell poles are plugged together through the conductive spring clips, and then the collecting ears are plugged into the conductive spring clips. In this way, compared with the welding connection method, the plug-in connection method is more convenient and faster, thereby improving the assembly efficiency of the battery module.

[0024] The additional technical features and advantages of the present application will be more clearly explained in the following description, or can be understood through the specific practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the specific implementation methods of the present application, the following is a brief introduction to the drawings required for the description of the specific implementation methods. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1A schematic diagram of a three-dimensional structure at a certain angle of an implementation manner of a battery cell pole provided in an embodiment of the present application;

[0027] Figure 2 A schematic diagram of a three-dimensional structure from another angle of an implementation manner of a battery cell pole provided in an embodiment of the present application;

[0028] Figure 3 A schematic diagram of a three-dimensional structure of an implementation of a conductive spring provided in an embodiment of the present application;

[0029] Figure 4 A schematic side view of the structure of an implementation of a conductive spring provided in an embodiment of the present application;

[0030] Figure 5 A schematic diagram of a three-dimensional structure of an implementation manner of an insulating sleeve provided in an embodiment of the present application;

[0031] Figure 6 A schematic diagram of a top view of an insulating sleeve according to an embodiment of the present application;

[0032] Figure 7 for Figure 6 Schematic diagram of the cross-sectional structure at AA in the middle;

[0033] Figure 8 for Figure 6 Schematic diagram of the cross-sectional structure at the middle BB;

[0034] Fig. 9 A schematic diagram of a three-dimensional structure at a certain angle of an implementation manner of a battery cell provided in an embodiment of the present application;

[0035] Fig.10 A schematic diagram of a three-dimensional structure from another angle of an implementation manner of a battery cell provided in an embodiment of the present application;

[0036] Fig.11 A schematic diagram of a partial explosion structure of an implementation manner of a battery provided in an example of the present application;

[0037] Fig.12 A partial top view structural schematic diagram of an implementation manner of a battery provided in an embodiment of the present application;

[0038] Fig.13 for Fig.12 Schematic diagram of the cross-sectional structure at CC in the middle;

[0039] Fig.14 for Fig.13 A partial enlarged schematic diagram of point D in the middle;

[0040] Fig.15 for Fig.13 A partial enlarged schematic diagram of point E in the middle;

[0041] Fig.16 A partial three-dimensional structural schematic diagram of an implementation manner of a battery provided in an embodiment of the present application;

[0042] Fig.17 for Fig.16 A partial enlarged schematic diagram of point F in the middle;

[0043] Fig.18 A partial three-dimensional structural schematic diagram of an implementation manner of a battery provided in an embodiment of the present application;

[0044] Fig.19 A partial front structural schematic diagram of an implementation manner of a battery provided in an embodiment of the present application;

[0045] Fig. 20 for Fig.19 A partial enlarged schematic diagram of the G in the middle;

[0046] Fig.21 for Fig.19 A partial enlarged schematic diagram of the H in the middle;

[0047] Fig. 22 A schematic diagram of a three-dimensional structure of an implementation of a module protection cover provided in an embodiment of the present application;

[0048] Fig.23 A partial main structural diagram of an implementation scheme of a signal acquisition component provided in an embodiment of the present application;

[0049] Fig.24 A partial three-dimensional structural schematic diagram of an implementation manner of a battery provided in an embodiment of the present application;

[0050] Fig.25 for Fig.24 A local enlarged schematic diagram of point I in the middle.

[0051] Reference numerals:

[0052] 101-plug-in portion; 102-guide surface;

[0053] 103-electrode clip; 104-slot;

[0054] 105-cell connection part; 106-pole body;

[0055] 107-plug tongue; 08-cell pole;

[0056] 109-first elastic portion; 110-second elastic portion;

[0057] 11-conductive spring; 112-clip insert cavity;

[0058] 113-insulating sleeve; 114-inserting tongue inserted into the cavity;

[0059] 15-cell body; 202-module protection cover;

[0060] 203-module end plate; 204-protection plate;

[0061] 205-base portion; 206-connection limit plate;

[0062] 207-card slot; 208-signal acquisition board;

[0063] 209-collection wire harness; 210-collection wire fixing hole;

[0064] 213-temperature sensor; 214-collection board body;

[0065] 215-collection ear; 216-plug terminal;

[0066] 217-fixed connector; 218-temperature sensor head;

[0067] 219-temperature sensing wire; 220-copper busbar;

[0068] 221-Battery module. DETAILED DESCRIPTION

[0069] The technical solution of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0070] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0071] In the description of this 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, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0072] like Figures 1 to 25 As shown, one aspect of the present application provides a battery cell pole assembly, including a signal acquisition board 208, a conductive spring clip 11 and two battery cell poles 08, the two battery cell poles 08 are plugged through the conductive spring clip 11, the signal acquisition board 208 includes a collection board body 214 and a collection ear 215 fixed to the collection board body 214, and the collection ear 215 is used to be plugged with the conductive spring clip 11.

[0073] In the embodiment of the present application, the various components in the battery cell pole assembly can be assembled and placed together, or can be disassembled and placed separately.

[0074] When the battery cell pole assembly provided by the present application is used, the two battery cell poles 08 are first fixed one by one on the two battery cell bodies 15. When the battery module 221 is manufactured, the two battery cell poles 08 are plugged in through the conductive spring clip 11, and then the collecting ear 215 is plugged in with the conductive spring clip 11. In this way, compared with the welding connection method, the plug-in connection method is more convenient and faster, thereby improving the assembly efficiency of the battery module 221.

[0075] Optionally, the battery pole 08 comprises a plug tongue 107, a pole body 106 and a plug-in portion 101 connected in sequence in the first direction, a slot 104 is formed on the plug-in portion 101, the notch of the slot 104 is arranged away from the pole body 106 in the first direction, the position of the plug tongue 107 in the second direction corresponds to the position of the slot 104, the size of the plug tongue 107 in the second direction is not greater than the size of the slot 104 in the second direction, and the position of the plug tongue 107 in the third direction corresponds to the position of the slot 104, and the first direction, the second direction and the third direction are perpendicular to each other. This facilitates the plugging of two adjacent battery poles 08 in the first direction.

[0076] Optionally, the conductive spring sheet 11 is used to make pressure contact with an inner wall of a slot 104 of one of the battery cell poles 08 and an inserting tongue 107 of another of the battery cell poles 08 in the second direction.

[0077] Optionally, the conductive spring piece 11 is a U-shaped piece, and the conductive spring piece 11 is used to be mounted on the plug tongue 107 of the battery pole 08, and the opening of the conductive spring piece 11 is oriented in the same direction as the notch of the slot 104. In this way, the two side surfaces of the plug tongue 107 and the inner wall of the slot 104 in the second direction are separated and tensioned by the conductive spring piece 11, thereby improving the reliability of the connection between the plug tongue 107, the conductive spring piece 11 and the inner wall of the slot 104. Of course, the conductive spring piece 11 can also be arranged on one side of the plug tongue 107 in the second direction.

[0078] Optionally, the size of the conductive spring piece 11 in the third direction is larger than the size of the plug-in portion 101, and the conductive spring piece 11 has a collection mating end, the collection mating end is used to extend out of the slot 104 in the third direction, and the collection mating end is used to be plugged with the collection ear 215. The collection ear 215 is plugged with the collection mating end extending from the plug-in portion 101, so that when the collection ear 215 is plugged with the conductive spring piece 11, it is not easy to interfere with the plug tongue 107 that is also plugged with the conductive spring piece 11, so that the collection ear 215 and the conductive spring piece 11 can be plugged smoothly.

[0079] Optionally, the battery cell pole assembly provided in the embodiment of the present application further includes an insulating sleeve 113, the plug-in portion 101 includes electrode clips 103 arranged parallel to each other, the slot 104 is formed between the two electrode clips 103, and a mutually isolated plug tongue insertion cavity 114 and two clip insertion cavities 112 are formed in the insulating sleeve 113, the plug tongue insertion cavity 114 is located between the two clip insertion cavities 112, the two clip insertion cavities 112 are used to be one-to-one correspondingly mounted on the two electrode clips 103, and the plug tongue insertion cavity 114 is used to be mounted outside the plug tongue 107. In general, when the pole of a battery cell is electrically connected to the pole of the opposite electrode of the battery cell adjacent to one side, it is not electrically connected to the pole of the opposite electrode adjacent to the other side. When the battery cell pole 08 described in the embodiment of the present application is used, the non-electrical connection can be achieved through the insulating sleeve 113. Specifically, the two electrode clips 103 of one battery cell pole 08 are respectively inserted into the two clip insertion cavities 112 on the insulating sleeve 113, and the plug tongue 107 of the other battery cell pole 08 is inserted into the plug tongue insertion cavity 114 of the insulating sleeve 113. On the one hand, the battery cell poles 08 of the two adjacent battery cells can be connected to each other to fix the positions of the two battery cells, and on the other hand, the battery cell poles 08 of the two battery cells are insulated and isolated, and are not electrically connected. Optionally, in the third direction, the size of the collection ear 215 is smaller than the size of the pole body 106. That is to say, in the third direction, the size of the collecting ear 215 is smaller than the distance between the conductive spring piece 11 and the insulating sleeve 113 closest to the conductive spring piece 11. In this way, when the collecting ear 215 is plugged into the conductive spring piece 11, the collecting ear 215 can be first moved between the conductive spring piece 11 and the insulating sleeve 113, and then the collecting ear 215 can be moved toward the opening of the conductive spring piece 11 and inserted into the conductive spring piece 11. During this process, the movement of the collecting ear 215 is not easy to interfere with the insulating sleeve 113.

[0080] In an embodiment of the present application, when the battery cell pole 08 is used as the positive pole of the battery cell, a symbol "+" can be engraved or printed on the pole body 106, and / or, when the battery cell pole 08 is used as the positive pole of the battery cell, a symbol "-" can be engraved or printed on the pole body 106.

[0081] The battery cell pole 08 provided in the present application, when in use, has two battery cell poles 08 installed one by one on the positive and negative poles of the battery cell body 15, the two battery cell poles 08 being the positive pole and negative pole of the battery cell respectively. When the battery cells are grouped, in two adjacent battery cells, the plug tongue 107 on the positive pole of one battery cell is plugged into the slot 104 on the negative pole of the other battery cell, thereby realizing the electrical connection between the two adjacent battery cells. In this way, when a plurality of battery cells are assembled into a battery module 221, the poles of the two adjacent battery cells do not need to be connected by welding, but are connected by plugging the two battery cell poles 08. On the one hand, it is no longer restricted by welding equipment, so that the battery module 221 can be assembled in more occasions. On the other hand, the plug-in connection is more convenient and quicker than welding, which can improve the assembly efficiency of the battery module 221.

[0082] Optionally, the inner wall of the slot 104 includes a guide surface 102, the guide surface 102 is arranged near the edge of the notch, the guide surface 102 faces the notch, and the guide surface 102 is inclined relative to the first direction. In this way, the guide surface 102 is equivalent to forming a slope facing the outside of the slot 104. In the process of inserting the plug tongue 107 of a battery cell pole 08 into the slot 104 of an adjacent battery cell pole 08, the end of the plug tongue 107 contacts the guide surface 102 and moves along the guide surface 102 to the inside of the slot 104, making it easier to achieve plug-in. In the embodiment of the present application, while the guide surface 102 is inclined relative to the first direction, the guide surface 102 can be inclined relative to the second direction and parallel to the third direction, or can be inclined relative to the third direction and parallel to the second direction. Of course, the guide surface 102 can also be an arc-shaped surface.

[0083] In the embodiment of the present application, preferably, a surface is formed at one end of the plug tongue 107 away from the pole body 106 to guide the plug tongue 107 to be inserted into the slot 104 and facilitate the insertion of the plug tongue 107 into the slot 104. The surface can be a plane or a curved surface.

[0084] Optionally, the battery cell pole 08 provided in the embodiment of the present application further includes a battery cell connecting portion 105 connected to the pole body 106 , and the battery cell connecting portion 105 protrudes from the plug-in portion 101 in the second direction. When the tongue 107 is inserted into the slot 104 of a battery cell pole 08, due to the moving tension that may be generated between the inner wall of the slot 104 and the tongue 107, the plug-in portion 101 may be deformed in the second direction under the action of the tension. If the battery cell connecting portion 105 and the plug-in portion 101 are at the same position relative to the battery cell body 15 in the second direction, the plug-in portion 101 may squeeze the battery cell body 15 after deformation, and cause the connection between the battery cell body 15 and the battery cell connecting portion 105 to fail, so that the battery cell connecting portion 105 protrudes from the plug-in portion 101 in the second direction. After the battery cell connecting portion 105 is connected to the battery cell body 15, a certain gap will be left between the plug-in portion 101 and the battery cell body 15, and the gap makes it difficult for the deformed plug-in portion 101 to contact the battery cell body 15, and thus the problem of connection failure between the battery cell connecting portion 105 and the battery cell body 15 due to deformation of the plug-in portion 101 is not likely to occur.

[0085] Optionally, the slot 104 penetrates the plug-in portion 101 in the third direction. In this way, when the plug tongue 107 of one battery cell pole 08 is plugged into the slot 104 of the adjacent battery cell pole 08, the plug tongue 107 does not have to be plugged into the notch of the slot 104, but the plug tongue 107 can first be inserted into the slot 104 from one side of the slot 104 in the third direction, and then the positions of the two battery cell poles 08 are adjusted according to the positions of the corresponding two battery cells, which enables the adjacent battery cell poles 08 to have a variety of matching modes, thereby improving the flexibility of assembling the corresponding battery module 221. Of course, only one side of the slot 104 in the third direction can be open, and the other side can be closed.

[0086] In the embodiment of the present application, the various components in the battery cell pole assembly can be assembled and placed together, or can be disassembled and placed separately.

[0087] The battery cell pole assembly provided in the present application adopts the battery cell pole 08 provided in the present application. When in use, two of the battery cell poles 08 are installed on the positive and negative poles of the battery cell body 15 in a one-to-one correspondence. The two battery cell poles 08 are respectively the positive pole and the negative pole of the battery cell. When the battery cells are grouped, in two adjacent battery cells, the tongue 107 on the positive pole of one battery cell is plugged into the slot 104 on the negative pole of the other battery cell, thereby realizing the electrical connection between the two adjacent battery cells. In this way, when multiple battery cells are assembled into a battery module 221, the poles of the two adjacent battery cells do not need to be connected by welding, but are connected by plugging the two battery cell poles 08. On the one hand, it is no longer restricted by welding equipment, so that the battery module 221 can be assembled in more occasions. On the other hand, the plug-in connection is more convenient and quicker than welding, which can improve the assembly efficiency of the battery module 221. By providing the conductive spring sheet 11, on the one hand, the pressure and friction between the plug tongue 107 and the inner wall of the slot 104 can be generated by the elastic deformation of the conductive spring sheet 11, so that the connection between the plug tongue 107 and the slot 104 is more firmly established. On the other hand, the conductive performance of the conductive spring sheet 11 can also smoothly connect another adjacent battery cell pole 08.

[0088] Optionally, the conductive spring sheet 11 includes a first elastic portion 109 and two oppositely arranged second elastic portions 110, one of the second elastic portions 110, the first elastic portion 109 and the other second elastic portion 110 are sequentially connected to form the U-shaped member, and the two second elastic portions 110 are both wavy. In this way, the inner wall of the plug tongue 107 and the slot 104 squeezes the second elastic portion 110 to deform the waves on the second elastic portion 110, thereby applying pressure to the inner wall of the plug tongue 107 and the slot 104. Of course, the second elastic portion 110 and the first elastic portion 109 can also be set as flat plates, and the conductive spring sheet 11 is made of a material with a certain elasticity. In the embodiment of the present application, the wavy shape includes at least one crest and one trough, and the length direction of the wave on the second elastic portion 110 is preferably perpendicular to the arrangement direction of the first elastic portion 109 and the second elastic portion 110. Preferably, a plurality of openings extending in a length direction perpendicular to the first elastic portion 109 are formed on the second elastic portion 110.

[0089] In the embodiment of the present application, preferably, the ends of the two second elastic portions 110 away from the first elastic portion 109 extend obliquely in opposite directions with a tendency to separate from each other, which facilitates the insertion of the inserting tongue 107 into the conductive spring sheet 11 from the opening of the U-shaped conductive spring sheet 11 .

[0090] The battery cell pole assembly provided in the present application includes a signal acquisition board 208 and a plurality of conductive spring clips 11. The signal acquisition board 208 includes a collection board body 214 and a plurality of collection ears 215 fixed to the collection board body 214. The collection ears 215 are distributed in the length direction of the collection board body 214. The conductive spring clips 11 are U-shaped parts. The collection ears 215 are used to be plugged into the conductive spring clips 11 one by one. The conductive spring clips 11 are used to be electrically connected to the battery cell pole 08.

[0091] The multiple described in the embodiment of the present application is at least two; in the embodiment of the present application, the various components in the battery cell pole assembly can be assembled together and placed, and can be disassembled from each other and placed separately.

[0092] When using the battery cell pole assembly provided in the embodiment of the present application, first fix each conductive spring clip 11 on each battery cell pole 08 whose signal needs to be collected, and arrange each conductive spring clip 11 in the same direction, and the openings of each conductive spring clip 11 are oriented in the same direction. Then, insert each collecting ear 215 on the signal collection board 208 into each conductive spring clip 11 one by one, and clamp the collecting ear 215 through the elastic deformation of the conductive spring clip 11 to realize the connection between the signal collection board 208 and the battery cell pole 08. In this way, there is no need to weld between the battery cell pole 08 and the signal collection board 208, but they are connected by plugging, which has high production efficiency.

[0093] Optionally, the battery cell pole assembly provided in the embodiment of the present application further includes a plug-in terminal 216 and a collection harness 209, wherein the plug-in terminal 216 is fixed at one end in the length direction of the signal acquisition board 208, and a mounting groove is formed on the plug-in terminal 216, wherein the mounting groove is oriented parallel to the length direction of the signal acquisition board 208, and the collection harness 209 is plugged into the mounting groove. In this way, the collection harness 209 can be quickly disassembled and assembled, thereby improving the efficiency of disassembly and assembly of the collection harness 209. Of course, the harness and the signal acquisition board 208 can also be welded. In the embodiment of the present application, the collection harness 209 is preferably an FFC / FPC data cable; and the signal acquisition board 208 is preferably a PCB board.

[0094] Optionally, the battery cell pole assembly provided in the embodiment of the present application further includes a fixed connector 217, and a collection line fixing hole 210 is formed on the signal collection board 208, and the fixed connector 217 passes through the collection line fixing hole 210 and is fixedly connected to the collection harness 209. When the battery is used in vehicles and other transportation tools, bumps and vibrations often occur, which makes the connection between the collection harness 209 and the plug-in terminal 216 easy to fall off. The signal collection board 208 and the collection harness 209 are fixed together by the fixed connector 217, so that the connection between the collection harness 209 and the plug-in terminal 216 is not easy to fall off. In the embodiment of the present application, the connector between the fixed connector 217 and the collection harness 209 is preferably a detachable connection; the fixed connector 217 can be a threaded connector or a fixed rivet.

[0095] Optionally, the battery cell pole assembly provided in the embodiment of the present application further includes a temperature sensor 213, wherein the temperature sensor 213 includes a temperature sensing head 218 and two temperature sensing wires 219 connected to each other, wherein the temperature sensing head 218 is used to be plugged into the battery cell pole 08, and the two temperature sensing wires 219 clamp the signal acquisition board 208. This facilitates the rapid disassembly and assembly of the temperature sensor 213 and the battery cell pole 08, as well as the rapid disassembly and assembly between the temperature sensor 213 and the signal acquisition board 208, further improving production efficiency. In the embodiment of the present application, the temperature sensor 213 is preferably an NTC temperature sensor 213.

[0096] The present application also provides a battery cell, including a battery cell body 15;

[0097] The battery cell further includes the battery cell pole 08 provided in the embodiment of the present application; and / or the battery cell further includes the battery cell pole assembly provided in the embodiment of the present application;

[0098] One of the battery cell poles 08 is fixed to the positive electrode of the battery cell body 15 , and the other of the battery cell poles 08 is fixed to the negative electrode of the battery cell body 15 .

[0099] The battery cell provided in the present application, when in use, has two battery cell poles 08 installed one by one on the positive and negative poles of the battery cell body 15, the two battery cell poles 08 being respectively the positive pole and negative pole of the battery cell. When the battery cells are grouped, in two adjacent battery cells, the plug tongue 107 on the positive pole of one battery cell is plugged into the slot 104 on the negative pole of the other battery cell, thereby realizing the electrical connection between the two adjacent battery cells. In this way, when a plurality of battery cells are assembled into a battery module 221, the poles of the two adjacent battery cells do not need to be connected by welding, but are connected by plugging the two battery cell poles 08. On the one hand, it is no longer restricted by welding equipment, so that the battery module 221 can be assembled in more occasions. On the other hand, the plug-in connection is more convenient and quicker than welding, which can improve the assembly efficiency of the battery module 221.

[0100] In the embodiment of the present application, preferably, the slot 104 of one of the battery cell poles 08 is a first slot, and the slot 104 of the other battery cell pole 08 is a second slot, and the orientation of the notch of the first slot is opposite to the orientation of the notch of the second slot.

[0101] Another aspect of the present application provides a battery module 221, including a copper bus 220, two battery cell bodies 15 and a battery cell pole assembly provided in an embodiment of the present application, wherein the two battery cell poles 08 are connected to the two battery cell bodies 15 in a one-to-one correspondence.

[0102] The battery pole assembly includes two conductive springs 11, and the two conductive springs 11 are matched with the two battery poles 08 in a one-to-one correspondence. One conductive spring 11 is plugged into the collection ear 215, and the other conductive spring 11 is plugged into the copper bar 220. The copper bar 220 is L-shaped or U-shaped. It can be understood that the battery pole 08 equipped with the copper bar 220 and the corresponding conductive spring 11 is located at one end of the battery module 211 in the first direction; the battery pole 08 equipped with the collection ear 215 and the corresponding conductive spring 11, its conductive spring 11 is plugged into the plug tongue 107 of another battery pole 08.

[0103] The battery module 221 provided by the present application adopts the battery cell pole assembly provided by the present application. When in use, the two battery cell poles 08 are first fixed one by one on the two battery cell bodies 15. When making the battery module 221, the two battery cell poles 08 are plugged in through the conductive spring clips 11, and then the collecting ears 215 are plugged in with the conductive spring clips 11. In this way, compared with the welding connection method, the plug-in connection method is more convenient and faster, which improves the assembly efficiency of the battery module 221; the copper bus 220 is plugged in with the conductive spring clips 11, which facilitates the battery cells in the battery module 221 to be connected with the adjacent parts through the copper bus 220. For example, when the copper bar 220 is L-shaped, the battery cell can be plugged into the module end plate 203 through the copper bar 220. When the module end plate 203 or the battery cell needs to be removed, the copper bar 220 only needs to be pulled out to disconnect the electrical connection between the module end plate 203 and the battery cell. When the copper bar 220 is U-shaped, it is convenient for two adjacent battery modules 221 to be plugged in through the copper bar 220. When the battery using the battery module 221 is removed, the copper bar 220 only needs to be pulled out from the two battery modules 221 to disconnect the connection between the two battery modules 221, which is convenient and quick.

[0104] Optionally, the battery module 221 provided in the embodiment of the present application further includes a module protection cover 202, and the battery cell pole assembly is located between the module protection cover 202 and the battery cell body 15 in a direction perpendicular to the signal acquisition board 208. In this way, the module protection cover 202 can protect the signal acquisition board 208, the connection between the acquisition ear 215 and the conductive spring 11, the connection between the acquisition harness 209 and the plug-in terminal 216, and each battery cell pole 08, so that when the battery collides with the outside world, the signal acquisition board 208 and each battery cell pole 08 are not easily damaged, and the connection between the acquisition ear 215 and the conductive spring 11 and the connection between the acquisition harness 209 and the plug-in terminal 216 are not easily detached.

[0105] The battery module 221 provided in the embodiment of the present application adopts the battery cell pole assembly provided in the present application. When in use, each conductive spring clip 11 is first fixed on each battery cell pole 08 whose signal needs to be collected, and each conductive spring clip 11 is arranged in the same direction, and the openings of each conductive spring clip 11 are oriented in the same direction. Then, each collection ear 215 on the signal collection board 208 is inserted into each conductive spring clip 11 one by one, and the collection ear 215 is clamped by the elastic deformation of the conductive spring clip 11 to achieve the connection between the signal collection board 208 and the battery cell pole 08. In this way, there is no need to weld between the battery cell pole 08 and the signal collection board 208, but they are connected by plugging, which has high production efficiency. Moreover, since the conductive spring clip 11 and the battery cell pole 08 of the battery cell are detachably connected instead of welded, the connection between the battery cell pole assembly and the battery cell does not need to rely on welding equipment, so that the connection between the battery cell pole assembly and the battery cell can be achieved in more occasions.

[0106] Optionally, the battery module 221 provided in the embodiment of the present application further includes a module end plate 203 vertically arranged with respect to the acquisition board body 214, and the module end plate 203 is fixedly connected with the module protective cover 202. In this way, the integrity of the signal acquisition board 208, the module protective cover 202 and the module end plate 203 is improved, and the shaking that may be generated by the signal acquisition board 208, the module protective cover 202 and the module end plate 203 is reduced during the use of the battery. The connection between the module end plate 203 and the module protective cover 202 is preferably adhesive.

[0107] Optionally, the module protection cover 202 includes a protection plate 204 and a base portion 205, wherein the protection plate 204 is arranged parallel to the signal acquisition board 208, and the base portion 205 protrudes from the protection plate 204 in a direction perpendicular to the protection plate 204, and a card slot 207 is formed on the base portion 205, wherein the notch of the card slot 207 is oriented parallel to the protection plate 204, and the card slot 207 is engaged with the acquisition board body 214. By engaging the acquisition board body 214 with the card slot 207 on the base portion 205, the signal acquisition board 208 is better positioned and fixed, and the plug-in between the signal acquisition board 208 and the conductive spring sheet 11 is not easily loosened and failed.

[0108] Optionally, the module protective cover 202 also includes a connecting limit plate 206, which is arranged parallel to the protective plate 204, and the connecting limit plate 206, the base portion 205 and the protective plate 204 are fixedly connected in sequence in a direction perpendicular to the protective plate 204, the connecting limit plate 206 is fixedly connected to the module end plate 203, the signal acquisition board 208 is located between the connecting limit plate 206 and the protective plate 204, and the area of ​​the connecting limit plate 206 is larger than the area of ​​the acquisition board body 214. On the one hand, the connection limit plate 206 is arranged between the battery cell and the signal acquisition board 208, so that the signal acquisition board 208 is not easy to collide with the battery cell due to battery vibration. On the other hand, the area of ​​the connection limit plate 206 is large, so that the connection area of ​​the connection limit plate 206 and the module end plate 203 is larger than the connection area of ​​the base 205 and the module end plate 203, thereby obtaining a higher reliability for the connection between the module protection cover 202 and the connection limit plate 206.

[0109] A third aspect of the present application provides a battery, including the battery module 221 provided in the embodiment of the present application.

[0110] The battery provided in the present application adopts the battery module 221 provided in the present application. When in use, the two battery poles 08 are first fixed on the two battery body 15 in a one-to-one correspondence. When making the battery module 221, the two battery poles 08 are plugged through the conductive spring sheet 11, and then the collecting ear 215 is plugged with the conductive spring sheet 11. In this way, compared with the welding connection method, the plug-in connection method is more convenient and faster, and the assembly efficiency of the battery module 221 is improved; the copper bus 220 is plugged with the conductive spring sheet 11, which is convenient for the battery cells in the battery module 221 to be connected with adjacent components or The device is connected. For example, when the copper bus 220 is L-shaped, the battery cell can be plugged into the module end plate 203 through the copper bus 220. When the module end plate 203 or the battery cell needs to be removed, the copper bus 220 only needs to be pulled out to disconnect the electrical connection between the module end plate 203 and the battery cell; when the copper bus 220 is U-shaped, it is convenient for two adjacent battery modules 221 to be plugged in through the copper bus 220. When the battery using the battery module 221 is removed, the copper bus 220 only needs to be pulled out from the two battery modules 221 to disconnect the connection between the two battery modules 221, which is convenient and quick.

[0111] The battery provided in the present application adopts the battery cell provided in the present application. When in use, the two battery cell poles 08 are installed on the positive and negative poles of the battery cell body 15 in a one-to-one correspondence. The two battery cell poles 08 are respectively the positive pole and the negative pole of the battery cell. When the battery cells are grouped, in two adjacent battery cells, the tongue 107 on the positive pole of one battery cell is plugged into the slot 104 on the negative pole of the other battery cell, thereby realizing the electrical connection between the two adjacent battery cells. In this way, when multiple battery cells are assembled into a battery module 221, the poles of the two adjacent battery cells do not need to be connected by welding, but are connected by plugging the two battery cell poles 08. On the one hand, it is no longer restricted by welding equipment, so that the battery module 221 can be assembled in more occasions. On the other hand, the plug-in connection is more convenient and quicker than welding, which can improve the assembly efficiency of the battery module 221.

[0112] The battery provided in the present application adopts the battery module 221 provided in the present application. When in use, each conductive spring clip 11 is first fixed on each battery cell pole 08 whose signal needs to be collected, and each conductive spring clip 11 is arranged in the same direction, and the openings of each conductive spring clip 11 are oriented in the same direction. Then, each collection ear 215 on the signal collection board 208 is inserted into each conductive spring clip 11 one by one, and the collection ear 215 is clamped by the elastic deformation of the conductive spring clip 11 to achieve the connection between the signal collection board 208 and the battery cell pole 08. In this way, there is no need to weld between the battery cell pole 08 and the signal collection board 208, but a plug-in connection is adopted, which has high production efficiency. Moreover, since the conductive spring clip 11 and the battery cell pole 08 of the battery cell are detachably connected instead of welded, the connection between the battery cell pole assembly and the battery cell does not need to rely on welding equipment, thereby enabling the connection between the battery cell pole assembly and the battery cell to be achieved in more occasions.

[0113] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A battery cell pole assembly, characterized in that: It includes a signal acquisition board, a conductive spring and two battery poles, the two battery poles are plugged through the conductive spring, the signal acquisition board includes an acquisition board body and a collection ear fixed to the acquisition board body, the collection ear is used to be plugged with the conductive spring.

2. The battery cell pole assembly according to claim 1, characterized in that: The battery cell pole includes a plug tongue, a pole body and a plug-in portion connected in sequence in a first direction, a slot is formed on the plug-in portion, a notch of the slot is arranged away from the pole body in the first direction, a position of the plug tongue in a second direction corresponds to a position of the slot, a size of the plug tongue in the second direction is not greater than a size of the slot in the second direction, and a position of the plug tongue in a third direction corresponds to a position of the slot, and the first direction, the second direction and the third direction are perpendicular to each other.

3. The battery cell pole assembly according to claim 2, characterized in that: The conductive spring sheet is used for pressure contact with the inner wall of the slot of one of the battery cell poles and the inserting tongue of another of the battery cell poles in the second direction.

4. The battery cell pole assembly according to claim 3, characterized in that: The conductive spring sheet is a U-shaped piece, and is used to be sleeved on the plug tongue of the battery cell pole, and the opening of the conductive spring sheet is oriented in the same direction as the notch of the slot.

5. The battery cell pole assembly according to claim 4, characterized in that: In the third direction, the size of the conductive spring sheet is larger than that of the plug-in portion. The conductive spring sheet has a collection mating end, which is used to extend out of the slot in the third direction and is used to be plugged with the collection ear.

6. The battery cell pole assembly according to claim 4, characterized in that: It also includes an insulating sleeve, the plug-in portion includes electrode clips arranged in parallel with each other, the slot is formed between the two electrode clips, and a mutually isolated plug-in tongue insertion cavity and two clip insertion cavities are formed in the insulating sleeve, the plug-in tongue insertion cavity is located between the two clip insertion cavities, the two clip insertion cavities are used to be correspondingly mounted on the two electrode clips, and the plug-in tongue insertion cavity is used to be mounted outside the plug-in tongue.

7. The battery cell pole assembly according to any one of claims 2 to 6, characterized in that: In the third direction, the size of the collecting ear is smaller than the size of the pole body.

8. A battery module, characterized in that: It comprises a copper busbar, two battery cell bodies and a battery cell pole assembly as claimed in any one of claims 1 to 7, wherein the two battery cell poles are connected to the two battery cell bodies in a one-to-one correspondence. The battery cell pole assembly includes two conductive springs, which are matched with the two battery cell poles in a one-to-one manner. One conductive spring is plugged into the collection ear, and the other conductive spring is plugged into the copper busbar. The copper busbar is L-shaped or U-shaped.

9. The battery module according to claim 8, characterized in that: It also includes a module protection cover, and the battery cell pole assembly is located between the module protection cover and the battery cell body in a direction perpendicular to the signal acquisition board.

10. A battery, characterized in that Comprising the battery module as claimed in claim 8 or 9.

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