CN215008498U

CN215008498U - Output electrode structure of battery module, battery module and battery pack

Info

Publication number: CN215008498U
Application number: CN202120964641.4U
Authority: CN
Inventors: 胡雄; 刘晨南; 谷秋雨; 刘争光; 高佳静
Original assignee: Dongguan Tafel New Energy Technology Co Ltd; Jiangsu Tafel New Energy Technology Co Ltd; Jiangsu Tafel Power System Co Ltd; Jiangsu Zenergy Battery Technologies Co Ltd
Current assignee: Jiangsu Zenergy Battery Technologies Co Ltd
Priority date: 2021-05-08
Filing date: 2021-05-08
Publication date: 2021-12-03
Anticipated expiration: 2031-05-08

Abstract

The utility model belongs to the technical field of battery production and manufacture, in particular to an output electrode structure of a battery module, a battery module and a battery pack, which comprises an adapter (1) electrically connected with the pole of the battery module; an external connector (2) extending from one side of the adapter (1) in a direction away from the output pole; the end part of the external piece (2) is integrally provided with a mounting part (3) for being electrically connected with other battery modules or external electrical equipment. The utility model discloses need not to install the nut in advance, help simplifying assembly process, reduction in production cost.

Description

Output electrode structure of battery module, battery module and battery pack

Technical Field

The utility model belongs to the technical field of the battery production is made, concretely relates to output pole structure, battery module and battery package of battery module.

Background

Nowadays, green, high-efficiency secondary batteries are vigorously developed in various countries. The lithium ion battery as a novel secondary battery has the advantages of large energy density and power density, high working voltage, light weight, small volume, long cycle life, good safety, environmental protection and the like, and has wide application prospect in the aspects of portable electric appliances, electric tools, large-scale energy storage, electric traffic power supplies and the like. The standard battery module needs to be connected between the modules through the copper bar, and the copper bar material that goes out more is connected, and is with high costs, and the copper bar connection output utmost point need be considered the copper bar and overflows the ability to and copper bar insulation protection etc. appear that damaged material needs in time to be changed, and the technology is complicated.

The current module subassembly is connected, and the positive negative pole of module all needs the bolt to fix, needs the more bolt and nut of a quantity, because the quantity of bolt and nut is more, and the risk probability that leads to leaking locking is bigger, and it is more easy because the bolt does not lock and lead to the vehicle to generate heat, causes the battery package to catch fire the explosion scheduling problem, and in addition, utmost point ear support piece needs embedded nut, and manufacturing process is complicated, and the defective rate is high, and it is bad to heat to be moulded and arouses the withstand voltage inefficacy of module insulation easily.

SUMMERY OF THE UTILITY MODEL

One of the purposes of the utility model lies in: to prior art's not enough, provide a battery module's output pole structure, need not to install the nut in advance, help simplifying the assembly process, reduction in production cost.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an output pole structure of a battery module comprises an adapter piece, a pole post and a power supply, wherein the adapter piece is electrically connected with the pole post of the battery module; the external connector extends from one side of the adapter to the direction away from the output pole; the end part of the external piece is integrally provided with a mounting part for being electrically connected with other battery modules or external electrical equipment.

Preferably, a bending piece is arranged between the adapter piece and the external piece, and the bending piece extends from one side of the adapter piece and bends downwards along the height direction.

Preferably, the external connector extends from one side of the bending piece along the length direction, the external connector includes a main body portion and an extension portion, the extension portion extends from one side of the main body portion along the width direction, and the mounting portion is disposed at an end portion of the extension portion.

Preferably, the adaptor, the external connector and the bending part are integrated to form an L shape or a U shape.

Preferably, the bending part of the bending piece and the connecting part between the external piece and the bending piece are both in a rounded corner structure.

Preferably, the installation department is the arch that forms along direction of height Z, the arch is provided with the fixed orifices, the external piece be provided with the through-hole of fixed orifices intercommunication, the inboard of fixed orifices is provided with the screw thread.

Preferably, the mounting portion is a mounting hole, and the mounting hole is a U-shaped hole, an oval-shaped hole or a round hole.

Preferably, a convex hull is arranged at the top of the adapter, at least one part of the convex hull covers the output pole, and the convex hull is square, circular or elliptical.

Another object of the present invention is to provide a battery module, which comprises a plurality of batteries connected in series or in parallel to form a terminal post; according to the output pole structure of the battery module, the adapter is connected to the pole; and the external piece extends along the direction departing from the output electrode and is electrically connected with other battery modules or external electrical equipment through the mounting part.

The third objective of the present invention is to provide a battery pack, which comprises a plurality of battery modules as described above; and the fixing piece penetrates through the installation parts of the two adjacent battery modules and is used for electrically connecting the two battery modules.

The utility model has the advantages that the utility model comprises an adapter piece which is used for being electrically connected with the pole of the battery module; the external connector extends from one side of the adapter to the direction away from the output pole; the end part of the external piece is integrally provided with a mounting part for being electrically connected with other battery modules or external electrical equipment. Because the existing module assembly is connected, the positive electrode and the negative electrode of the module are fixed by bolts, more bolts and nuts are needed, the risk probability of locking leakage is higher due to more bolts and nuts, the problems of vehicle heating, battery pack fire explosion and the like are more easily caused because the bolts are not locked, the lug support piece needs to embed the nuts in advance, the manufacturing process is complex, the reject ratio is high, poor thermoplasticity easily causes module insulation and pressure resistance failure, therefore, the mounting part can directly penetrate through the mounting parts of the two output electrode structures by the mounting part arranged on the output electrode structures, the mounting part is equivalent to the nut, namely, the nut does not need to be preassembled, the number of the nuts is favorably reduced, and the production cost of the battery is reduced, wherein when the two output electrode structures are fixedly connected, the mounting part of one output electrode structure corresponds to the mounting part of the other output electrode structure, the battery modules can be electrically connected only by one-time connection, so that the number of parts to be mounted is reduced, the probability of neglected mounting is reduced, and the reject ratio of battery production is reduced; the external piece extends from one side of adaptor to the direction of keeping away from the output pole, is convenient for carry out fixed connection with two output pole structures, avoids external piece and battery module's end plate or curb plate to take place the contact, leads to the condition of taking place the battery module short circuit, and in addition, two output pole structures are directly connected, promote the battery package ability of overflowing by a wide margin, reduce the output pole structure in step and overflow the temperature rise that generates heat, promote output pole structure life and battery package life. The utility model discloses need not to install the nut in advance, help simplifying assembly process, reduction in production cost.

Drawings

Features, advantages and technical effects of exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of an output electrode according to a first embodiment of the present invention.

Fig. 2 is a schematic structural diagram of an output electrode according to a second embodiment of the present invention.

Fig. 3 is a schematic structural view of an output electrode according to the first embodiment and an output electrode according to the second embodiment of the present invention before mounting.

Fig. 4 is a schematic structural view of the output electrode according to the first embodiment and the output electrode according to the second embodiment of the present invention after being mounted.

Fig. 5 is a plan view of the output electrode according to the first embodiment and the output electrode according to the second embodiment of the present invention after mounting.

Fig. 6 is a schematic structural view of an output electrode according to a third embodiment of the present invention.

Fig. 7 is a schematic structural view of the output electrode according to the first embodiment and the output electrode according to the third embodiment of the present invention after mounting.

Fig. 8 is a schematic view of connection between the battery modules according to the present invention.

Wherein the reference numerals are as follows:

1-an adapter; 11-convex hull;

2-external connecting piece; 21-a body portion; 22-an extension; 25-a linking moiety;

3-an installation part; 31-a bump; 311-a fixation hole;

4-mounting holes;

5-bending the piece; 51-a bent portion;

7-a fixing member;

x-length direction; y-width direction; z-height direction.

Detailed Description

As used in the specification and in the claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, and a person skilled in the art can solve the technical problem within a certain error range to substantially achieve the technical effect.

Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, detachable connections, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The present invention will be described in further detail with reference to fig. 1 to 8, but the present invention is not limited thereto.

Implementation mode one

The following describes embodiment one with reference to fig. 1

The output pole structure of the battery module comprises an adapter 1 which is electrically connected with a pole of the battery module; an external connector 2 extending from one side of the adapter 1 in a direction away from the output electrode; wherein, the end of the external connector 2 is integrally provided with a mounting part 3 for electrically connecting with other battery modules or external electrical equipment.

Because the existing module assembly is connected, the positive pole and the negative pole of the module are fixed by bolts, more bolts and nuts are needed, the risk probability of leakage locking is higher due to more bolts and nuts, the problems of vehicle heating, battery pack fire explosion and the like are more easily caused because the bolts are not locked, the lug support piece needs to embed the nuts in advance, the manufacturing process is complex, the reject ratio is high, poor thermoplasticity easily causes module insulation and pressure resistance failure, therefore, the mounting part 3 is provided with the mounting part 3 on the output pole structure, the fixing part 7 can directly penetrate through the mounting parts 3 of the two output pole structures, the mounting part 3 is equivalent to the nut, the nut does not need to be preassembled, the number of the nuts is favorably reduced, and the production cost of the battery is reduced, wherein when the two output pole structures are fixedly connected, the mounting part 3 of one output pole structure corresponds to the mounting part 3 of the other output pole structure, the battery modules can be electrically connected only by one-time connection, so that the number of parts to be mounted is reduced, the probability of neglected mounting is reduced, and the reject ratio of battery production is reduced; external member 2 extends from one side of adaptor 1 to the direction of keeping away from the output utmost point, is convenient for carry out fixed connection with two output utmost point structures, avoids external member 2 and battery module's end plate or curb plate to take place the contact, leads to the condition of taking place the battery module short circuit, and in addition, two output utmost point structures are directly connected, promote the battery package ability of overflowing by a wide margin, reduce output utmost point structure in step and overflow the temperature rise that generates heat, promotion output utmost point structure life and battery package life.

In the present embodiment, the mounting portion 3 is disposed on the lower surface of the external connector 2, the upper surface of the mounting portion 3 is provided with a fixing hole 311 communicated with the mounting portion 3, the external connector 2 and the mounting portion 3 may adopt an integrally formed structure, and the external connector 2 and the mounting portion 3 may also adopt a split structure, that is, the mounting portion 3 is welded to the external connector 2; wherein, the fixed orifices 311 can be the structure that both ends switched on, also can be the blind hole, and is concrete, two output pole structures can set up two installation departments 3 respectively, and when two output pole structure fixed connection, the installation department 3 of one of them output pole structure, be located the top of the installation department 3 of another output pole structure, only need connect once through mounting 7 and can accomplish the electricity between the battery module and connect, reduce the spare part quantity that needs the installation, reduce the probability that takes place to neglected loading, but the utility model discloses not so limit, the size of output pole can change according to actual demand, can make special-shaped output pole, with different interval module of adaptation and battery package.

In the basis the utility model discloses an among the output pole structure of battery module, installation department 3 is the arch 31 that forms along direction of height Z, and arch 31 is provided with fixed orifices 311, and external piece 2 is provided with the through-hole that communicates with fixed orifices 311, and the inboard of fixed orifices 311 is provided with the screw thread. The protrusion 31 is added, the protrusion 31 is provided with the fixing hole 311 matched with the fixing piece 7, the fixing piece 7 is fixed in the fixing hole 311 of the protrusion 31, the protrusion 31 is higher, the contact area of the mounting part 3 and the fixing piece 7 can be increased, and the stability between the mounting part 3 and the fixing piece 7 is improved. The fixing member 7 is a bolt, penetrates through the through hole and the fixing hole 311, can be matched with the thread on the inner side of the fixing hole 311, and plays a role in fixing the fixing member 7.

According to the utility model discloses an in the output pole structure of battery module, the top of adaptor 1 is provided with convex closure 11, and the output pole is covered to 11 at least some of convex closures, and convex closure 11 is square, circular or oval. Specifically, the convex hull 11 is formed by upward protruding the top of the adaptor 1, when the adaptor is installed on the battery module, the position of the convex hull 11 corresponds to the position of the pole of the battery module, and the heights of the adaptors 1 on other parts are slightly lower than the convex hull 11, so that the internal space of the battery module is optimized, and the energy density of the battery is improved. The convex hull 11 can be designed to be square, circular or elliptical according to the shape of the actual pole, and the requirement of fixed connection with the pole can be met.

The utility model discloses a theory of operation is:

the mounting part 3 is arranged on the output electrode structure, the fixing part 7 can directly penetrate through the mounting parts 3 of the two output electrode structures, the mounting parts 3 are equivalent to nuts, namely, the nuts do not need to be preassembled, the number of the nuts is reduced, and therefore the production cost of the battery is reduced, wherein when the two output electrode structures are fixedly connected, the mounting part 3 of one output electrode structure corresponds to the mounting part 3 of the other output electrode structure, the electrical connection between the battery modules can be completed only through one-time connection, the number of parts needing to be mounted is reduced, the probability of neglected mounting is reduced, and the reject ratio of the battery production is reduced; external member 2 extends from one side of adaptor 1 to the direction of keeping away from the output utmost point, is convenient for carry out fixed connection with two output utmost point structures, avoids external member 2 and battery module's end plate or curb plate to take place the contact, leads to the condition of taking place the battery module short circuit, and in addition, two output utmost point structures are directly connected, promote the battery package ability of overflowing by a wide margin, reduce output utmost point structure in step and overflow the temperature rise that generates heat, promotion output utmost point structure life and battery package life.

Second embodiment

The difference from the first embodiment is that: the tip an organic whole of external piece 2 of this embodiment is provided with mounting hole 4, is provided with between adaptor 1 and the external piece 2 and buckles 5, buckles 5 and extends and buckle along direction of height Z from one side of adaptor 1 downwards, and external piece 2 extends along length direction X from one side of buckling 5, and adaptor 1,

external piece

2 and 5 an organic whole of buckling enclose into the L type, and mounting hole 4 is U type hole, oval type hole or round hole. Increase and buckle piece 5 for the output pole of embodiment one and the output pole of embodiment two when fixed connection, external piece 2 between them has the difference in height, two external piece 2 can stack together, can not only increase area of contact, promote the ability of overflowing of battery package, reduce the temperature that the output pole structure overflows and generates heat, can also reduce the space that occupies behind the output pole of embodiment one and the output pole fixed connection of embodiment two, thereby reduce the space that occupies battery package inside, improve battery package space utilization. Specifically, the bending piece 5 extends from one side of the adapter piece 1 and bends downwards along the height direction Z, the bending piece 5 bending downwards is further connected with the external piece 2, the external piece 2 is electrically connected with other battery modules or external electrical equipment through the external piece 2, when the two battery modules are arranged along the length direction X, the external pieces 2 of the output electrode of the first embodiment and the output electrode of the second embodiment can both extend along the length direction X from one side of the bending piece 5, the two output electrode structures with the structures are oppositely arranged in pairs in the length direction X, the two external pieces 2 can be stacked together, only the fixing piece 7 needs to penetrate through the mounting hole 4 of the output electrode of the second embodiment and is fixed on the protrusion 31 of the output electrode of the first embodiment, mounting can be completed, and the battery module is suitable for the situation that the two battery modules are arranged along the length direction X. In this embodiment, adaptor 1,

external piece

2 and 5 an organic whole that buckle enclose into similar L type, nevertheless the utility model discloses not for the limit, according to the structure of actual battery module, adaptor 1,

external piece

2 and 5 an organic whole that buckle also can form the linear type structure. In addition,

adaptor

1 and 5 pieces of buckling can adopt split type structure, set up the step at adaptor 1 promptly, then will buckle the top of 5 and fix on the step, through the welding, the joint or the bonding carry out fixed connection, help improving the steadiness of output pole structure, thereby improve the mechanical strength of output pole structure, the life of extension battery package, according to actual fixed knot structure, can become U type hole with mounting hole 4 design, oval type hole or round hole, preferably adopt U type hole, be convenient for finely tune the position of mounting 7, help improving the production assembly efficiency of battery package.

Other structures are the same as those of the first embodiment, and are not described herein again.

Third embodiment

The difference from the first embodiment is that: the external connector 2 of the present embodiment includes a main body 21 and an extension 22, the extension 22 extends from one side of the main body 21 in the width direction Y, the mounting portion 3 is provided at an end portion of the extension 22, and the adaptor 1, the external connector 2, and the bending member 5 are integrally enclosed into a U shape. When two battery modules are arranged side by side in the width direction Y, one of the output pole structures adopts the structure of the first embodiment or the second embodiment, the extension portion 22 of the other output pole structure extends from one side of the body portion 21 in the width direction Y, the output pole structure is connected with the output pole structure of the first embodiment through the extension portion 22, specifically, the mounting hole 4 of the output pole structure is located above the protrusion 31 of the output pole structure of the first embodiment, and the mounting portion 3 or the protrusion 31 can be arranged at the end portion of the extension portion 22, that is, the extension portion 22 is close to one end of the output pole structure of the first embodiment, so that the two battery modules are fixedly connected when arranged side by side in the width direction Y. Wherein, the bending part 51 of the bending piece 5 and the connecting part 25 between the external piece 2 and the bending piece 5 are designed into a rounding structure, so that the condition that the bending part 51 or the connecting part 25 scratches the battery module or cuts the assembled personnel is avoided.

Manufacturing battery module and battery pack

The utility model discloses an output pole structure of battery module that embodiment one ~ three battery module was used.

The battery module comprises a plurality of batteries which are connected in series or in parallel to form a pole; the adaptor 1 is connected to the pole; the external connector 2 extends in a direction away from the output electrode, and is electrically connected to another battery module or an external electrical device through the mounting portion 3.

It should be noted that: the plurality of batteries form a series or parallel structure through the bus bar, and the pole of the battery positioned at the end of the battery module is installed with an output pole structure and is electrically connected with other battery modules or external electrical equipment through the installation part 3.

The battery pack comprises a plurality of battery modules; and a fixing member 7 passing through the mounting parts 3 of the adjacent two battery modules for electrically connecting the two battery modules.

It should be noted that: the fixing piece 7 is a bolt and comprises a head and a screw rod, the screw rod is connected to the head, the area of the head of the bolt is larger than that of the mounting hole 4, namely, the head of the bolt cannot penetrate through the mounting hole 4, the screw rod can penetrate through the mounting hole 4 and is in threaded connection with the inner side of the fixing hole 311 of the protrusion 31, and the effect of fixing the two output pole structures is achieved.

Variations and modifications to the above-described embodiments may become apparent to those skilled in the art from the disclosure and teachings of the above description. Therefore, the present invention is not limited to the above-mentioned embodiments, and any obvious modifications, replacements or variations made by those skilled in the art on the basis of the present invention belong to the protection scope of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.

Claims

1. An output electrode structure of a battery module, comprising:

the adapter (1) is electrically connected with a pole of the battery module;

an external connector (2) extending from one side of the adapter (1) in a direction away from the output pole;

the end part of the external piece (2) is integrally provided with a mounting part (3) for being electrically connected with other battery modules or external electrical equipment.

2. An output electrode structure of a battery module according to claim 1, wherein: the bending piece (5) is arranged between the adapter piece (1) and the external piece (2), and the bending piece (5) extends from one side of the adapter piece (1) and bends downwards along the height direction (Z).

3. An output electrode structure of a battery module according to claim 2, wherein: the external part (2) extends from one side of the bending part (5) along the length direction (X), the external part (2) comprises a body part (21) and an extension part (22), the extension part (22) extends from one side of the body part (21) along the width direction (Y), and the mounting part (3) is arranged at the end part of the extension part (22).

4. An output electrode structure of a battery module according to claim 2, wherein: the adapter piece (1), the external piece (2) and the bending piece (5) are integrated to form an L shape or a U shape.

5. An output electrode structure of a battery module according to claim 2, wherein: the bending part (51) of the bending piece (5) and the connecting part (25) between the external piece (2) and the bending piece (5) are all in a rounded corner structure.

6. The output electrode structure of a battery module according to any one of claims 1 to 4, wherein: installation department (3) are for following arch (31) that direction of height (Z) formed, arch (31) are provided with fixed orifices (311), outer adapting piece (2) be provided with the through-hole of fixed orifices (311) intercommunication, the inboard of fixed orifices (311) is provided with the screw thread.

7. The output electrode structure of a battery module according to any one of claims 1 to 4, wherein: the installation department (3) are mounting hole (4), mounting hole (4) are U type hole, oval type hole or round hole.

8. The output electrode structure of a battery module according to any one of claims 1 to 4, wherein: the top of adaptor (1) is provided with convex closure (11), convex closure (11) at least partly cover the output pole, convex closure (11) are square, circular or oval.

9. A battery module, comprising:

a plurality of batteries connected in sequence to form a pole;

the output pole structure of a battery module according to any one of claims 1 to 8, the adaptor (1) being connected to a pole; and the external connector (2) extends along the direction departing from the output electrode and is electrically connected with other battery modules or external electrical equipment through the mounting part (3).

10. A battery pack, comprising:

a plurality of battery modules according to claim 9;

and a fixing member (7) passing through the mounting portions (3) of the two adjacent battery modules for electrically connecting the two battery modules.