CN106328846A - Battery assembly - Google Patents

Abstract

The present invention provides a battery assembly, including a battery module and a bus circuit board, the battery module includes a single battery and an elastic member, the single battery includes a positive electrode cap, the single battery also includes a casing, the The elastic member is fixedly connected to the positive electrode cap; the elastic member includes an upper ring, a lower ring and a plurality of elastic sheets connecting the upper ring and the lower ring, and the lower ring of the elastic member Fixedly connected to the positive cap; the bus circuit board includes a circuit board body and a positive socket and a negative socket arranged on the circuit board body, the positive socket and the negative socket The seat is further electrically connected to the circuit board body. In the battery assembly provided by the invention, the connections between the single cells and the bus circuit board are all elastic connections, which have high assembly efficiency, strong buffer capacity, and are easy to disassemble and maintain.

Description

a battery pack

【Technical field】

The invention relates to the technical field of batteries, in particular to a battery assembly.

【Background technique】

With the continuous advancement of the theme of green environmental protection, the usage of various electric products powered by electricity is increasing year by year. In order to achieve the voltage and power required by various electric products, multiple single cells are usually connected in series and parallel through a bus circuit board. However, there are two main ways to connect the existing single battery to the bus circuit board: bolt connection and welding, both of which are rigid connections, which are complicated to assemble and difficult to disassemble and maintain.

In view of this, it is necessary to provide a new type of battery assembly to overcome the above defects.

【Content of invention】

The purpose of the present invention is to provide a battery assembly with high assembly efficiency of single battery and bus circuit board, strong buffer capacity and easy disassembly and maintenance.

In order to achieve the above object, the present invention provides a battery assembly, including a battery module and a bus circuit board, the battery module includes a single battery and an elastic member, the single battery includes a positive cap, and the single battery also Including the shell, the elastic member is fixedly connected to the positive cap; the elastic member includes an upper ring, a lower ring and a plurality of elastic pieces connecting the upper ring and the lower ring, the elastic The lower ring of the component is fixedly connected to the positive cap; the bus circuit board includes a circuit board body and a positive socket and a negative socket arranged on the circuit board body, and the elastic member is accommodated in the the positive socket and is electrically connected to the positive socket; the shell of the single battery is held in the negative socket and electrically connected to the negative socket; the positive socket The socket and the negative socket are further electrically connected to the circuit board body.

In a preferred embodiment, the circuit board body includes a positive manifold and a negative manifold, the positive socket is arranged on the positive manifold, and the negative socket is arranged on the negative manifold .

In a preferred embodiment, the plurality of elastic sheets are evenly spaced between the upper ring and the lower ring, and the elastic sheets are bent in a direction away from the central axis of the upper ring and the lower ring form an arc.

In a preferred embodiment, the elastic member further includes a contact foot, the contact foot extends from the edge of the lower ring to a direction close to the central axis of the lower ring, and the contact foot is fixedly connected to the The positive electrode cap, the upper ring, the lower ring, the elastic sheet and the contact pin are integrally formed.

In a preferred embodiment, the positive socket is cylindrical and has a through hole, the elastic member is accommodated in the through hole, and the diameter of the through hole is the same as the upper ring of the elastic member. And corresponding to the diameter of the lower ring.

In a preferred embodiment, the negative socket includes a seat body and a plurality of connecting pieces extending from the edge of the seat body, the seat body is cylindrical and has a positioning hole penetrating the seat body , the plurality of connecting pieces are evenly spaced on one side of the seat body.

In a preferred embodiment, the positive collector plate provided with the positive socket is arranged on the side of the single battery close to the positive cap, and the negative collector provided with the negative socket is arranged on the side of the single battery. near the side opposite the positive cap.

In a preferred embodiment, both the positive manifold with the positive socket and the negative manifold with the negative socket are arranged on the side of the single battery close to the positive cap, and the negative The manifold is provided with a receiving hole corresponding to the diameter of the positive socket, and the receiving hole is opposite to and coaxially arranged with the base of the negative socket, and the positive manifold is connected to the negative socket. The boards are stacked and the positive socket passes through the receiving hole.

In the battery assembly provided by the present invention, the positive electrode of the single battery is elastically connected to the positive electrode bus plate through the elastic member and the positive socket socket, and the negative terminal surface of the single battery is elastically connected to the positive electrode socket through the negative socket socket. Connected to the negative electrode bus plate, the connection between the single battery and the bus circuit board is elastic, with high assembly efficiency, strong buffer capacity and easy disassembly and maintenance.

【Description of drawings】

FIG. 1 is a schematic structural diagram of a battery assembly provided in a first embodiment of the present invention;

Fig. 2 is a schematic structural view of the battery module provided by the present invention;

Fig. 3 is the structural representation of the elastic member provided by the present invention;

Fig. 4 is a schematic structural diagram of a battery assembly provided in a second embodiment of the present invention.

【detailed description】

In order to make the object, technical solution and beneficial technical effects of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific implementations described in this specification are only for explaining the present invention, not for limiting the present invention.

As shown in FIG. 1 , the present invention provides a battery assembly 100 including a battery module 10 and a bus circuit board 20 .

Please refer to FIG. 2 , the battery module 10 includes a single battery 11 and an elastic member 12 . The single battery 11 is cylindrical, and the single battery 11 includes a positive end surface, and the positive end surface is provided with a positive electrode cap 111, and the positive electrode cap 111 is approximately circular and flat and is the shape of the single battery 11. positive pole. The single battery 11 also includes a cylindrical shell 114, the cylindrical shell 114 includes a circular negative end face 112 away from the positive cap 111 and a side wall 1141 perpendicular to the negative end face 112, the shell 114 is the negative electrode of the single battery 11.

Referring to Fig. 3, the elastic member 12 includes an upper ring 121, a lower ring 122 and a plurality of elastic sheets 123 connecting the upper ring 121 and the lower ring 122, and the plurality of elastic sheets 123 are uniform Spaced between the upper ring 121 and the lower ring 122, the elastic sheet 123 is bent in a direction away from the central axis of the upper ring 121 and the lower ring 122 to form an arc, that is, the elastic sheet The cross-section at any position of 123 is circular, and the diameter of the cross-section at any position of the elastic piece 123 is larger than the diameters of the upper ring 121 and the lower ring 122 . Specifically, the elastic member 12 further includes a contact foot 124 , and the contact foot 124 extends from the edge of the lower ring 122 toward the central axis of the lower ring 122 . The upper ring 121 , the lower ring 122 , the elastic piece 123 and the contact pin 124 are integrally formed.

The lower ring 122 is fixed on the positive cap 111 , the contact pin 124 contacts the positive cap 111 and the contact pin 124 is fixed on the positive cap 111 . Specifically, the elastic member 12 is made of a metal material with good electrical conductivity and fatigue resistance, such as beryllium bronze, and the lower ring 122 and the contact pin 124 are fixed on the positive electrode cap 111 by welding.

Please refer to FIG. 1 and FIG. 4 together. The bus circuit board 20 includes a circuit board body 21 and a positive socket 22 and a negative socket 23 disposed on the circuit board body 21 . The elastic member 12 is accommodated in the positive socket 22 and is electrically connected to the positive socket 22; the shell 114 of the single battery 11 is held in the negative socket 23 and connected to the negative socket 23. The negative socket 23 is electrically connected, and the positive socket 22 and the negative socket 23 are further electrically connected to the circuit board body 21 .

The circuit board body 21 includes a positive manifold 211 and a negative manifold 212, the positive socket 22 is disposed on the positive manifold 211, and the negative socket 23 is disposed on the negative manifold 212 .

The positive socket 22 is cylindrical and defines a through hole 221 , and the elastic member 12 is accommodated in the through hole 211 . Specifically, the diameter of the through hole 211 corresponds to the diameter of the upper ring 121 and the lower ring 122 of the elastic member 12 .

The negative socket 23 includes a seat body 231 and a plurality of connecting pieces 232 extending from the edge of the seat body 231 , the seat body 231 is cylindrical and has a positioning hole 233 passing through the seat body 231 , the plurality of connecting pieces 232 are evenly spaced on one side of the base body 231 . Specifically, the diameter of the seat body 231 corresponds to the diameter of the negative end surface 112 of the single battery 11 .

FIG. 1 is a battery assembly 100 provided in the first embodiment of the present invention. A positive electrode bus plate 211 provided with a positive electrode socket 22 is arranged on the side of the single battery 11 close to the positive electrode cap 111. The elastic member 12 accommodates In the through hole 221 of the positive socket 22; the negative bus plate 212 provided with the negative socket 23 is arranged on the side of the single battery 11 close to the negative terminal surface 112, and the single battery The side wall 1141 of the shell 114 of 11 close to the negative terminal surface 112 is clamped in the negative electrode receptacle 23 , and the negative terminal surface 112 is in contact with the negative electrode bus plate 212 . That is, the positive electrode cap 111 of the single battery 11 (the positive electrode of the single battery 11 ) is elastically connected to the positive electrode manifold 211 through the elastic member 12 and the positive electrode socket 22 and connected to the positive electrode manifold 211 Electrically connected: the negative terminal surface 112 of the single battery 11 (the negative pole of the single battery 11 ) is elastically connected to the negative bus plate 212 through the negative socket 23 and is electrically connected to the negative bus plate 212 .

Specifically, the positive electrode manifold 211 and the negative electrode manifold 212 realize the parallel connection of all the single cells 11 in the battery module 10, and the positive electrode manifold 211 leads out the total positive electrodes of the battery modules connected in parallel, the The negative electrode manifold 212 leads out the total negative electrodes of the battery modules connected in parallel.

In the battery assembly 100 provided in the first embodiment of the present invention, the positive electrode cap 111 of the single battery 11 is elastically connected to the positive electrode bus plate 211 through the elastic member 12 and the positive socket 22, and the single battery 11 The negative terminal surface 112 of the negative electrode is elastically connected to the negative electrode bus plate 212 through the negative electrode socket 23, and the connections between the single battery 11 and the bus circuit board 20 are all elastic connections, which have high assembly efficiency, strong buffer capacity, and are easy to disassemble and maintain.

Fig. 4 is a battery assembly 200 provided in the second embodiment of the present invention, which is different from the first embodiment of the present invention in that the positive busbar 211 provided with the positive socket 22 and the negative busbar 211 provided with the negative socket 23 The plates 212 are all arranged on the side of the single battery 11 close to the positive electrode cap 111, and the negative electrode bus plate 212 is provided with a receiving hole corresponding to the diameter of the positive electrode socket 22. The hole is opposite to and coaxially arranged with the seat body 231 of the negative socket 23 , the positive manifold 211 and the negative manifold 212 are stacked and the positive socket 22 passes through the receiving hole. The elastic member 12 is accommodated in the through hole 221 of the positive socket 22 , and the side wall 1141 of the casing 114 of the single battery 11 close to the positive end surface is clamped on the negative socket 23 Inside, the negative terminal surface 112 is in contact with the negative bus plate 212 . That is, the positive electrode cap 111 of the single battery 11 (the positive electrode of the single battery 11 ) is elastically connected to the positive electrode manifold 211 through the elastic member 12 and the positive electrode socket 22 and connected to the positive electrode manifold 211 Electrically connected: the side wall 1141 (the negative pole of the single battery 11 ) close to the positive end surface of the single battery 11 is elastically connected to the negative bus plate 212 through the negative socket 23 and connected to the The negative bus plate 212 is electrically connected. Specifically, an insulating layer is provided between the positive bus plate 211 and the negative bus plate 212 to ensure the insulation properties between the positive bus plate 211 and the negative bus plate 212 .

Specifically, the positive electrode manifold 211 and the negative electrode manifold 212 realize the parallel connection of all the single cells 11 in the battery module 10, and the positive electrode manifold 211 leads out the total positive electrodes of the battery modules connected in parallel, the The negative electrode manifold 212 leads out the total negative electrodes of the battery modules connected in parallel.

Compared with the first embodiment, in the battery assembly 200 provided by the second embodiment of the present invention, the positive electrode bus plate 211 and the negative electrode bus plate 212 are arranged on the same side of the single battery 11, while realizing the elastic connection mode, further Save space and improve space utilization.

The present invention is not limited to the description in the description and the implementation, so those skilled in the art can easily realize additional advantages and modifications, so without departing from the spirit and scope of the general concept defined by the claims and equivalent scope Without limitation, the invention is not limited to the specific details, representative apparatus, and illustrative examples shown and described herein.

Claims (8)

1. A battery assembly, characterized in that: it includes a battery module and a bus circuit board, the battery module includes a single battery and an elastic member, the single battery includes a positive cap, and the single battery also includes a casing , the elastic member is fixedly connected to the positive cap; the elastic member includes an upper ring, a lower ring and a plurality of elastic sheets connecting the upper ring and the lower ring, the elastic member The lower ring is fixedly connected to the positive cap; The bus circuit board includes a circuit board body and a positive socket and a negative socket arranged on the circuit board body, the elastic member is accommodated in the positive socket and connected to the positive socket Electrically connected; the shell of the single battery is clamped in the negative socket and electrically connected to the negative socket; the positive socket and the negative socket are further electrically connected to the negative socket Describe the circuit board body. 2. The battery assembly according to claim 1, wherein the circuit board body includes a positive electrode manifold and a negative electrode manifold, the positive socket is arranged on the positive electrode manifold, and the negative electrode is plugged into The seat is arranged on the negative bus plate. 3. The battery assembly according to claim 2, wherein the plurality of elastic sheets are evenly spaced between the upper ring and the lower ring, and the elastic sheets are away from the upper ring and the lower ring. The direction of the central axis of the lower ring is bent to form an arc. 4. The battery assembly according to claim 3, wherein the elastic member further comprises a contact leg, and the contact leg extends from the edge of the lower ring toward the central axis of the lower ring, The contact pin is fixedly connected to the positive cap, and the upper ring, the lower ring, the elastic sheet and the contact pin are integrally formed. 5. The battery assembly according to claim 4, wherein the positive socket is cylindrical and has a through hole, the elastic member is accommodated in the through hole, and the diameter of the through hole is Corresponding to the diameters of the upper and lower rings of the elastic member. 6. The battery assembly according to claim 5, wherein the negative socket includes a base body and a plurality of connecting pieces extending from the edge of the base body, the base body is cylindrical and has a There are positioning holes passing through the base body, and the plurality of connecting pieces are evenly spaced on one side of the base body. 7. The battery assembly according to claim 6, wherein the positive bus plate provided with the positive socket is arranged on the side of the single battery close to the positive cap, and the negative bus plate provided with the negative socket The plate is disposed on a side of the single battery close to the positive electrode cap. 8. The battery assembly according to claim 6, wherein the positive manifold with the positive socket and the negative manifold with the negative socket are both arranged on the side of the single battery close to the positive One side of the cap, and the negative manifold is provided with a receiving hole corresponding to the diameter of the positive socket, the receiving hole is opposite to and coaxially arranged with the base of the negative socket, The positive bus plate and the negative bus plate are stacked, and the positive socket passes through the receiving hole.