CN204809300U - Battery is subassembly for module - Google Patents

Abstract

The utility model provides a component for a battery module, which comprises: an insulating isolation plate, a plurality of conductive connecting pieces, a plurality of sampling lines and a sampling output interface. A plurality of conductive connecting pieces enable the single cells of the battery module to be connected in series and/or in parallel. The conductive connecting pieces include: an outer end, exposed on the insulating isolation plate, for electrically connecting the poles of the corresponding single cells; and an inner end, Embedded inside the insulation barrier. The sampling line is embedded in the insulating isolation plate and electrically connected to the inner end of the corresponding conductive connecting piece. The sampling output interface is fixed on the insulating isolation board, one side is electrically connected with the sampling line and the other side is plugged with the external wiring harness, so that the sampling line is electrically connected with the external wiring harness. In the battery module assembly according to the present utility model, based on the setting of the insulating isolation plate, a plurality of conductive connecting pieces, a plurality of sampling lines and sampling output interfaces, the series and/or parallel connection of the single cells of the battery module can be realized, and the improvement can be improved. The reliability of the electrical connection of the sampling line, while simplifying the structure and improving the strength.

Description

Components for battery modules

technical field

The utility model relates to the field of battery modules, in particular to a battery module component.

Background technique

With the requirements of low-carbon and environmental protection in modern society, power batteries have become more and more widely used. The most notable feature of the application in the fields of electric vehicles and energy storage power stations is modular assembly, that is, many batteries are assembled into battery modules, and then multiple battery modules are assembled in series/parallel into battery packs. With the rapid development of battery module applications, the requirements for signal sampling are becoming increasingly strict, and even the sampling requirements for the voltage or temperature of each single battery are required, and the requirements for manufacturing process cost control are becoming increasingly strict. Therefore, reliable and highly integrated Components for battery modules have also become the most important part of product design.

At present, there are mainly the following types of connection between the temperature and voltage sampling line and the single battery: 1. By crimping a terminal with a through hole at the end of the temperature or voltage line, and then using a screw and the thread on the battery pole to connect the The sampling line terminal and the connecting piece are fixed in the middle, but the screw fixing is unreliable and easy to loosen, which will cause sampling signal interference and affect the normal operation of the management unit; 2. The sampling line is welded on the connecting piece by ultrasonic welding process. The state is sensitive, the process control requirements are extremely high, and the efficiency is low and the cost is high. In addition, the strength perpendicular to the surface of the connecting piece after the temperature terminal or voltage sampling line is welded is insufficient, and the anti-interference performance of the solder joint is poor during the assembly process. The modules are scrapped, and the above problems seriously affect the quality of the process or the use of the product, which needs to be optimized urgently.

Utility model content

In view of the problems existing in the background technology, the purpose of this utility model is to provide a battery module assembly, which can realize the series and/or parallel connection of the single batteries B of the battery module, and improve the reliability of the electrical connection of the sampling line.

Another object of the present invention is to provide an assembly for a battery module, which can simplify the structure and improve the strength.

In order to achieve the above object, the utility model provides a component for a battery module, which includes: an insulating isolation plate, a plurality of conductive connecting pieces, a plurality of sampling lines and a sampling output interface.

A plurality of conductive connecting pieces enable the single cells of the battery module to be connected in series and/or in parallel. Each conductive connecting piece includes: an outer end, exposed on the insulating isolation plate, for electrically connecting the pole of a corresponding single battery; end, embedded inside the insulation barrier.

A plurality of sampling lines are embedded in the insulating isolation board and electrically connected to the inner ends of the corresponding conductive connecting pieces.

The sampling output interface is fixed on the insulating isolation board, one side is electrically connected to the plurality of sampling lines and the other side is used for plugging in the external wiring harness, so that the plurality of sampling lines are electrically connected to the external wiring harness.

The beneficial effects of the utility model are as follows: in the battery module assembly according to the utility model, the single cells of the battery module are connected in series and/or in parallel through the plurality of conductive connecting pieces, and the inner ends of the conductive connecting pieces Embedding the insulating isolation plate enhances the stability of the connection between the outer end of the conductive connecting piece and the pole of the single battery; the sampling line is embedded in the insulating insulating plate and electrically connected to the inner end of the corresponding conductive connecting piece, which can replace the sampling The assembly process of ultrasonic welding of the sampling line avoids the detachment of the ultrasonic welding spot of the sampling line, improves the reliability of the electrical connection of the sampling line, simplifies the manufacturing process, and reduces the manufacturing cost; the sampling line is electrically connected to the inner end of the conductive connecting piece to the corresponding unit. Sampling is carried out on the body battery, and the output of the sampling signal is completed through the plugging of the sampling output interface and the external wiring harness. The plugging of the sampling output interface and the external wiring harness simplifies the connection relationship; multiple conductive connecting pieces, multiple sampling lines and sampling output The interface is integrally integrated in the insulating isolation board, which can simplify the structure and improve the strength.

Description of drawings

Fig. 1 is an assembly perspective view of a battery module assembly and a battery module according to the present invention;

Fig. 2 is a left view of the battery module assembly according to the present invention;

Fig. 3 is a perspective view viewed from the upper side of the battery module assembly according to the present invention;

Fig. 4 is a perspective view viewed from the lower side of the battery module assembly according to the present invention;

Fig. 5 is an exploded view of a battery module assembly according to the present invention.

Wherein, the reference signs are explained as follows:

1 insulation isolation board 31 voltage sampling line

2 conductive connecting piece 32 temperature sampling line

21 external 4 sampling output interface

211 arched part 5 temperature sensor

22 inner terminal B single battery

3 sampling line P pole

Detailed ways

The battery module assembly according to the present invention will be described below with reference to the accompanying drawings.

Referring to FIG. 1 to FIG. 5 , the battery module assembly according to the present invention includes: an insulating isolation plate 1 , a plurality of conductive connecting pieces 2 , a plurality of sampling lines 3 and a sampling output interface 4 . In Fig. 1, the polarity of the pole P of the single battery B is represented by a plus or minus sign. Fig. 1 is only an example, and the battery module assembly according to the present invention is suitable for the single battery B to be connected in series and/or in parallel. and other connection methods.

A plurality of conductive connecting pieces 2 enable the single cells B of the battery module to be connected in series and/or in parallel, and each conductive connecting piece 2 includes: an outer end 21 exposed on the insulating isolation plate 1 for electrically connecting a corresponding single battery B pole P;

A plurality of sampling lines 3 are embedded in the insulating isolation board 1 and electrically connected to the inner ends 22 of the corresponding conductive connecting pieces 2 .

The sampling output interface 4 is fixed on the insulating isolation board 1, one side is electrically connected to the plurality of sampling lines 3 and the other side is used for plugging with an external harness (not shown), so that the plurality of sampling lines 3 are connected to the An external harness (not shown) is electrically connected.

In the battery module assembly according to the present invention, the single cells B of the battery module are connected in series and/or in parallel through the plurality of conductive connecting pieces 2, and the inner ends 22 of the conductive connecting pieces 2 are embedded in the insulating isolation plate 1. The stability of the connection between the outer end 21 of the conductive connecting piece 2 and the pole P of the single battery B is enhanced; the sampling line 3 is embedded in the insulating isolation plate 1 and electrically connected to the inner end of the corresponding conductive connecting piece 2 22. It can replace the assembly process of ultrasonic welding of the sampling line, avoid the detachment of the ultrasonic welding spot of the sampling line, improve the reliability of the electrical connection of the sampling line 3, simplify the manufacturing process, and reduce the manufacturing cost; The electrical connection of terminal 22 is used to sample the corresponding single battery B, and the output of the sampling signal is completed through the plugging of the sampling output interface 4 and the external wiring harness. The plugging of the sampling output interface 4 and the external wiring harness simplifies the connection relationship; A plurality of conductive connecting pieces 2, a plurality of sampling lines 3 and a sampling output interface 4 are integrally integrated in the insulating isolation board 1, which can simplify the structure and improve the strength.

In the battery module assembly according to the present invention, the thickness of each conductive connecting piece 2 can be determined by the overcurrent requirement.

In the battery module assembly according to the present utility model, in one embodiment, referring to FIGS. An arch portion 211 is formed between the poles P of the battery B. The arched part 211 can provide a buffer between the battery module components and the pole P of the single battery B, so as to avoid damage to the battery module components caused by hard connection during the charge and discharge of the single battery B or other usage conditions. , affecting the service life of the components used in the battery module and even the quality of the entire battery module.

In the battery module assembly according to the present invention, each sampling line 3 can be formed on the insulating isolation plate 1 by etching or printing, so that each sampling line 3 is embedded in the insulating isolation plate 1 .

In the battery module assembly according to the present invention, each sampling line 3 is a metal sampling line with good conductivity. The metal sampling line can be gold, silver or copper sampling line, preferably copper sampling line.

In the battery module assembly according to the present invention, each sampling line 3 can be electrically connected to the sampling output interface 4 by soldering.

In the battery module assembly according to the present invention, the sampling output interface 4 can be fixed to the insulating isolation plate 1 by soldering.

In the battery module assembly according to the present invention, in one embodiment, referring to FIG. 1 , FIG. 3 and FIG. 5 , the sampling line 3 may include a voltage sampling line 31 . The voltage sampling line 31 is electrically connected to the corresponding conductive connecting piece 2 by soldering.

In the battery module assembly according to the present invention, in one embodiment, referring to FIG. 1 , FIG. 3 and FIG. 5 , the sampling line 3 may include a temperature sampling line 32 .

In the battery module assembly according to the present utility model, in one embodiment, referring to Fig. 1, Fig. 2, Fig. 3 and Fig. 5, the battery module assembly may further include a temperature sensor 5 fixed on an insulating On the board 1 , it is in contact with the inner end 22 of the corresponding conductive connecting piece 2 and is electrically connected to the temperature sampling line 32 . The temperature sensor 5 can be fixed on the insulating spacer 1 by soldering. The temperature sensor 5 may be in direct contact with the inner end 22 of the corresponding conductive connection piece 2 or may be in indirect contact with the corresponding inner end 22 of the conductive connection piece 2 through thermal conductive glue (not shown).

In the battery module assembly according to the present invention, the temperature sampling line 32 can be electrically connected to the temperature sensor 5 by soldering.

In the battery module assembly according to the present invention, in one embodiment, the external wiring harness may include a voltage wiring harness (not shown).

In the battery module assembly according to the present invention, in an embodiment, the external wire harness may include a temperature wire harness (not shown).

In the battery module assembly according to the present utility model, in one embodiment, with reference to Fig. 1, Fig. 3 and Fig. 5, the sampling line 3 includes a voltage sampling line 31 and a temperature sampling line 32, and the external wiring harness includes a voltage wiring harness and The temperature wiring harness, and the external wiring harness can be an integral part of the temperature wiring harness and the voltage wiring harness, thereby realizing the transmission of the voltage signal and the temperature signal at the same time.

In the battery module assembly according to the present invention, the battery module can be a power battery module.

Claims (10)

1. A battery module assembly, characterized in that it comprises: Insulation isolation board (1); A plurality of conductive connecting pieces (2) enable the single cells (B) of the battery module to be connected in series and/or in parallel, and each conductive connecting piece (2) has: The outer end (21), exposed on the insulating spacer plate (1), is used to electrically connect the pole (P) of a corresponding single battery (B); and The inner end (22) is embedded in the insulating spacer (1); A plurality of sampling lines (3), embedded in the insulating isolation plate (1) and electrically connected to the inner end (22) of the corresponding conductive connecting piece (2); and The sampling output interface (4) is fixed on the insulating isolation board (1), and one side is electrically connected to the plurality of sampling lines (3) and the other side is used for plugging with an external wiring harness, so that the plurality of sampling lines (3) Electrically connected to the external wiring harness. 2. The battery module assembly according to claim 1, characterized in that, the outer end (21) of each conductive connecting piece (2) is electrically connected to the unit battery at the edge exposed to the insulating separator (1). An arched portion (211) is formed between the poles (P) of (B). 3. The battery module assembly according to claim 1, characterized in that, each sampling line (3) is formed on the insulating isolation plate (1) by etching or printing, so that each sampling line (3) is embedded in the insulating isolation plate. inside the plate (1). 4. The battery module assembly according to claim 1, characterized in that each sampling line (3) is electrically connected to the sampling output interface (4) by soldering. 5. The battery module assembly according to claim 1, wherein the sampling line (3) includes a voltage sampling line (31) and a temperature sampling line (32). 6. The battery module assembly according to claim 5, characterized in that the voltage sampling line (31) is electrically connected to the inner end (22) of the corresponding conductive connecting piece (2) by soldering. 7. The battery module assembly according to claim 5, wherein the battery module assembly further comprises: The temperature sensor (5) is fixed on the insulation isolation plate (1), contacts with the inner end (22) of the corresponding conductive connecting piece (2) and is electrically connected with the temperature sampling line (32). 8. The battery module assembly according to claim 7, characterized in that the temperature sensor (5) is in direct contact with the inner end (22) of the corresponding conductive connecting piece (2) or is connected to the corresponding conductive connection through thermally conductive adhesive. The inner ends (22) of the pieces (2) are in indirect contact. 9. The battery module assembly according to claim 7, characterized in that the temperature sampling line (32) is electrically connected to the temperature sensor (5) by soldering. 10 . The battery module assembly according to claim 5 , wherein the external wiring harness includes a voltage wiring harness and a temperature wiring harness, and the external wiring harness is an integral part of the temperature wiring harness and the voltage wiring harness. 11 .