CN218919217U - Sampling structure of battery module and battery module - Google Patents

Abstract

The utility model provides a sampling structure of a battery module and the battery module, wherein the sampling structure of the battery module comprises a sampling plate for collecting information of each battery cell in the battery module and a connector detachably connected to one end of the sampling plate; the sampling plate is provided with a plurality of conductors which are arranged side by side, the connector is provided with conductive lines which are connected with the conductors in a one-to-one correspondence manner, the cell information is transmitted to the conductive terminals on the connector through the electrical connection of the conductors and the conductive lines, and the conductive terminals are used for transmitting the cell information to the battery management system. According to the sampling structure of the battery module, the connector detachably connected to the sampling plate is beneficial to replacing and maintaining the sampling plate and the connector, so that the production cost is reduced, and through one-to-one correspondence connection between the conductors and the conductive lines, the transmission of the cell information to the conductive terminals through the conductors and the conductive lines is improved, so that the reliability of the information transmission between the sampling plate and the connector is improved.

Description

Sampling structure of battery module and battery module

technical field

The utility model relates to the technical field of power batteries, in particular to a sampling structure of a battery module. At the same time, the utility model also relates to a battery module with the sampling structure.

Background technique

At present, the power battery pack is composed of multiple battery modules. With the development of technology, the number of battery modules in the battery pack is gradually reduced. The form of only two or three large modules in a battery pack has become a form of arrangement. . In the prior art, the voltage of the cells in the battery module is collected by a sampling assembly, and the battery module sampling assembly consists of an FPC, a nickel sheet, a bracket and a connector. Among them, a fuse is etched inside the FPC as the sampling board to avoid a short circuit in the voltage acquisition circuit and cause a short circuit in the battery cell.

Usually a battery module is composed of 20 or even more than 40 cells, and the voltage parameters of the cells are collected through the module sampling assembly. function to improve safety in use. Since the sampling plate with this structure has high requirements on the process, the yield rate is low. Moreover, when insurance damage occurs inside the sampling plate, the entire sampling plate including connectors, nickel sheets, etc. are scrapped, making the maintenance cost of the sampling structure relatively high.

Utility model content

In view of this, the utility model aims at proposing a sampling structure of a battery module, which is beneficial to replace and maintain the sampling structure, and is beneficial to reduce the cost of replacement and maintenance.

In order to achieve the above object, the technical solution of the utility model is achieved in that:

A sampling structure of a battery module, comprising a sampling board for collecting information on each battery cell in the battery module, and a connector detachably connected to one end of the sampling board;

The sampling board is provided with a plurality of conductors arranged side by side, and the connector has conductive lines connected to the conductors one by one, and the cell information is passed through the conductors and the conductive lines The electrical connection is transmitted to the conductive terminal on the connector, and the conductive terminal is used to transmit the information of the battery cell to the battery management system.

Further, the conductive circuit includes a first conductive circuit electrically connected to the conductor, and a second conductive circuit for forming an electrical connection between the first conductive circuit and the conductive terminal;

A fuse is provided between the first conductive circuit and the second conductive circuit.

Further, one end of the conductor facing the connector is provided with a protruding conductive post, and one end of the conductive circuit is provided with a conductive hole for the conductive post to be inserted into;

The conductive body is electrically connected to the conductive circuit through the insertion of the conductive column in the conductive hole.

Further, the connector is provided with a circuit board, and the conductive lines are arranged side by side on the circuit board;

The connector is detachably connected to the sampling board via the circuit board.

Further, the circuit board is connected to the sampling board through a staple passing through both;

And/or, an insulating layer is sprayed on the circuit board.

Further, one end of the sampling plate is connected to a connecting plate, and a plurality of the conductors are arranged side by side on the connecting plate.

Further, the connector is provided on the plug port, and the conductive terminal is electrically connected to the battery management system via a wire harness plugged into the plug port.

Further, the sampling board is arranged on a collection piece that is electrically connected to each of the battery cells in one-to-one correspondence.

Compared with the prior art, the utility model has the following advantages:

The sampling structure of the battery module described in the utility model facilitates the replacement and maintenance of the sampling board and the connector through the detachable connector connected to the sampling board, thereby helping to reduce production costs, and through the electrical conductor and the conductive circuit The one-to-one corresponding connection between them is beneficial to improve the transmission of cell information to the conductive terminal via the conductor and the conductive line, thereby helping to improve the reliability of the information transmission between the sampling board and the connector.

In addition, the arrangement of the fuse between the first conductive circuit and the second conductive circuit is beneficial to improve the safety between the conductor and the conductive circuit. The structure of the conductive post and the conductive hole is simple, which is convenient for processing and forming, and the combination of the two has a good effect on improving the connection strength. The setting of the circuit board is beneficial to the arrangement and implementation of the conductive circuit and the connection between the connector and the sampling board. The way that the circuit board and the sampling card are clamped and connected has the advantage of convenient installation and disassembly. The arrangement of the connecting plate facilitates the arrangement and implementation of the conductors. The structure of the plug-in interface on the connector is simple, which facilitates the connection of the wiring harness. The collection sheet is convenient for collecting the information of each cell.

In addition, another object of the present utility model is to propose a battery module, which includes two end plates arranged at intervals, a plurality of battery cells arranged side by side between the two end plates, and a battery module for forming a plurality of said end plates. The bus bar to which the cells are electrically connected is used to install the bus bar bracket of the bus bar, and the battery module also includes the sampling structure of the battery module as described above.

Further, the sampling plate is connected to the bus bar bracket, and the connector is connected to the end plate.

The battery module described in the utility model, by setting the above-mentioned sampling structure, is conducive to improving the collection effect of battery information, and is conducive to reducing the cost of replacement and maintenance of the sampling structure.

In addition, the sampling board is connected to the bus bar bracket, and the connector is connected to the end board, which is convenient for the arrangement and implementation of the sampling board and the connector, and the connection effect is good.

Description of drawings

The accompanying drawings constituting a part of the utility model are used to provide a further understanding of the utility model, and the schematic embodiments of the utility model and their descriptions are used to explain the utility model, and do not constitute improper limitations to the utility model. In the attached picture:

Fig. 1 is a structural schematic diagram of the battery module sampling structure described in the embodiment of the present invention;

Fig. 2 is an enlarged view of part A in Fig. 1;

Fig. 3 is a schematic structural view of one end of the sampling plate described in the embodiment of the present invention;

Fig. 4 is an enlarged view of part B in Fig. 3;

Fig. 5 is a schematic structural diagram of the connector described in the embodiment of the present invention;

FIG. 6 is an enlarged view of part C in FIG. 5 .

Explanation of reference signs:

1. Sampling plate; 101. Acquisition piece; 102. Temperature acquisition unit; 103. Connecting plate; 104. Conductor; 1041. Conductive column;

2. Connector; 201, circuit board; 202, fuse; 203, second conductive circuit; 204, first conductive circuit; 205, rivet; 206, conductive terminal; 207, conductive hole; 208, first clamping hole; 209, the second riveting hole; 210, the socket;

3. Staples.

Detailed ways

It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

In the description of the present utility model, it should be noted that if there are terms such as "upper", "lower", "inner", "back", etc. indicating orientation or positional relationship, it is based on the orientation or position shown in the drawings. The relationship is only for the convenience of describing the utility model and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the utility model. In addition, if terms such as "first" and "second" appear, they are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

The utility model will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

This embodiment relates to a sampling structure of a battery module. Generally speaking, the sampling structure in this embodiment includes a sampling board 1 for collecting the information of each cell in the battery module, and one end detachably connected to the sampling board 1. connector 2.

The sampling board 1 is provided with a plurality of conductors 104 arranged side by side, and the connector 2 has conductive lines connected to the conductors 104 one by one, and the cell information is transmitted to the connector through the electrical connection between the conductors 104 and the conductive lines 2, the conductive terminal 206 is used to transmit cell information to the battery management system.

Based on the overall introduction above, an exemplary structure of the sampling structure of the battery module in this embodiment is shown in FIG. 1 and FIG. 2 . In this embodiment, both sides of the sampling plate 1 are provided with a plurality of collection sheets 101 arranged at intervals, and the plurality of collection sheets 101 are connected to a plurality of battery cells arranged side by side in two rows in the battery module one by one, so as to collect each battery cell. Core voltage information. During specific implementation, the collection sheet 101 can be a nickel sheet, which has a simple structure, is easy to arrange and implement, and has a good collection effect on the voltage information of the battery cell. In addition, a plurality of temperature collecting parts 102 are arranged on the collecting board, and the temperature collecting parts 102 are used to collect temperature information of the electric core, so as to improve the safety of the electric core in use.

In this embodiment, one end of the sampling plate 1 is connected to a connecting plate 103 , and a plurality of conductors 104 are arranged side by side on the connecting plate 103 . As shown in Fig. 2 and Fig. 3, during specific implementation, the connection plate 103 is welded on the end of the collection board, the conductor 104 extends along the length direction of the sampling board 1, and a plurality of conductors 104 are placed on the sampling board 1. are spaced apart on the connecting plate 103 in the width direction. In order to improve the safety of the connection board 103, insulating varnish can be sprayed on the connection board 103.

In addition, a circuit board 201 is provided on the connector 2 , and the conductive lines are arranged side by side on the circuit board 201 , and the connector 2 is detachably connected to the connection board 103 on the sampling board 1 via the circuit board 201 . Preferably, the circuit board 201 in this embodiment is connected to the connection board 103 on the sampling board 1 through a clip 3 passing through both. As shown in FIG. 2 and FIG. 4 , a plurality of conductive circuits are arranged on the circuit board 201 at intervals along the width direction of the circuit board 201 to correspond to the conductors 104 one by one. In this embodiment, the connector 2 is connected to the circuit board 201 by welding, and the welding positions of the two need to be filled with glue for insulation protection.

In this embodiment, as shown in FIG. 3 and FIG. 5 , one end of the circuit board 201 is stacked on the outside of the connection board 103, and two first clamping holes 208 are provided at both ends of the circuit board 201, corresponding to each The first clamping hole 208 is provided with two second clamping holes 105 on the connecting plate 103 . The staple 3 passes through the first clamping hole 208 and the second clamping hole 105 and is clamped on the connecting plate 103. The staple 3 here can be a mature product in the prior art. The clip connector on one side of the connection board 103 can realize the clip connection between the circuit board 201 and the connection board 103 through the cooperation of the clip connector and the top end of the clip.

Of course, in actual implementation, besides the way of connecting the circuit board 201 and the connecting board 103 by using the staple 3 , other easy-to-detach connecting structures can also be used to realize the detachable connection between the two. When the conductive circuit or the conductor 104 and the connector 2 break down, the maintenance and replacement can be realized by disassembling and replacing the connection board 103 and the circuit board 201, compared with the replacement of the entire sampling board 1 and the connector 2 in the prior art. The solution of the connector 2 is beneficial to reduce maintenance and replacement costs. In addition, in this embodiment, the circuit board 201 is sprayed with an insulating layer, and the insulating layer here can also be formed by insulating varnish, which is easy to spray on the circuit board 201 and has a better insulating effect.

As a preferred embodiment, as shown in Figure 5 and Figure 6, the conductive circuit in this embodiment includes a first conductive circuit 204 electrically connected to the conductor 104, and is used to form the first conductive circuit 204 and conduct The terminals 206 are electrically connected to the second conductive circuit 203 , and the fuse 202 is provided between the first conductive circuit 204 and the second conductive circuit 203 . Here, the first conductive circuit 204 is located outside the second conductive circuit 203, and the first conductive circuit 204 and the second conductive circuit 203 are connected through the fuse 202, which is beneficial to improve the safety of the conductive circuit in use, and the structure of the conductive circuit is simple , easy to arrange and implement, and has good use effect.

In order to improve the connection strength between the conductor 104 and the conductive circuit in this embodiment, one end of the conductor 104 facing the connector 2 in this embodiment is provided with an upwardly protruding conductive column 1041, and one end of the conductive circuit is provided for conduction. The conductive hole 207 in which the column 1041 is inserted, and the conductor 104 is electrically connected to the conductive circuit through the insertion of the conductive column 1041 in the conductive hole 207 . As shown in FIG. 5 and FIG. 6 , the conductive hole 207 is disposed at one end of the conductive circuit facing the sampling plate 1 , that is, the outer end of the first conductive circuit 204 . Here, the structure of the conductive hole 207 is simple, which is convenient for processing and forming.

As a preferred embodiment, the structure of the conductive pillar 1041 is as shown in Figure 3 and Figure 4, its cross-sectional shape is adapted to the shape of the conductive hole 207, and the top of the conductive pillar 1041 has a head in the shape of an isosceles trapezoid portion, which is beneficial to improve the connection strength between the conductive pillar 1041 and the conductive hole 207 .

In addition, as shown in FIG. 5 , a socket 210 is provided on the connector 2 , and the conductive terminal 206 is electrically connected to the battery management system via a wire harness plugged into the socket 210 . Among them, the conductive terminal 206 in this embodiment is specifically a plurality of pin needles provided on the connector 2, its structure is mature, it is convenient to arrange and implement on the connector 2, and it is conducive to the transmission of cell information through the conductive terminal 206 and the wiring harness. transmitted to the battery management system.

The sampling structure of the battery module described in this embodiment facilitates the replacement and maintenance of the sampling board 1 and the connector 2 by detachably connecting the connector 2 on the sampling board 1, thereby helping to reduce production costs, and through conducting The one-to-one connection between the body 104 and the conductive line is beneficial to improve the transmission of cell information to the conductive terminal 206 via the conductive body 104 and the conductive line, thereby improving the reliability of information transmission between the sampling board 1 and the connector 2 .

In addition, this embodiment also relates to a battery module, including two end plates arranged at intervals, a plurality of battery cells arranged side by side between the two end plates, and a bus bar for forming the electrical connection of the plurality of battery cells, The battery module also includes the above sampling structure of the battery module. Wherein, the sampling board 1 is connected with the bus bar support, and the connector 2 is connected with the end board.

In terms of specific structure, still referring to FIG. 1 and FIG. 3 , a plurality of first riveting holes 106 are provided on the sampling plate 1 , and the sampling plate 1 is connected to the busbar support via rivets 205 passing through the first riveting holes 106 . As shown in FIG. 4 , second riveting holes 209 are respectively provided at both ends of the socket 210 of the connector 2 , and the connector 2 is connected to the end plate via a rivet 205 passing through the second riveting hole 209 , such as a female and female rivet 205 . Of course, in actual implementation, other fixing structures can also be used for the sampling board 1 and the connector 2, as long as the two can be fixed in the battery module.

The battery module described in this embodiment, by setting the above-mentioned sampling structure, is beneficial to improve the collection effect of battery information, and is beneficial to reduce the cost of replacement and maintenance of the sampling structure.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included in the Within the protection scope of the present utility model.

Claims (10)

1. A sampling structure of a battery module is characterized in that:

the battery module comprises a sampling plate for collecting information of each battery cell in the battery module and a connector detachably connected to one end of the sampling plate;

the sampling plate is provided with a plurality of conductors which are arranged side by side, the connector is provided with conductive lines which are connected with the conductors in a one-to-one correspondence manner, the battery cell information is transmitted to the conductive terminals on the connector through the electrical connection of the conductors and the conductive lines, and the conductive terminals are used for transmitting the battery cell information to the battery management system.

2. The sampling structure of a battery module according to claim 1, wherein:

the conductive circuit comprises a first conductive circuit electrically connected with the electric conductor and a second conductive circuit for forming electric connection between the first conductive circuit and the conductive terminal;

and a fuse is arranged between the first conductive circuit and the second conductive circuit.

3. The sampling structure of a battery module according to claim 1, wherein:

an upward protruding conductive column is arranged at one end of the conductor, which faces the connector, and a conductive hole for inserting the conductive column is arranged at one end of the conductive circuit;

the conductor is electrically connected with the conductive circuit through the insertion of the conductive post in the conductive hole.

4. The sampling structure of a battery module according to claim 1, wherein:

the connector is provided with a circuit board, and the conductive circuits are arranged on the circuit board side by side;

the connector is detachably connected with the sampling plate through the circuit board.

5. The sampling structure of a battery module according to claim 4, wherein:

the circuit board is connected with the sampling board through a clamping nail penetrating through the circuit board and the sampling board in a clamping way;

and/or, an insulating layer is sprayed on the circuit board.

6. The sampling structure of a battery module according to claim 1, wherein:

one end of the sampling plate is connected with a connecting plate, and a plurality of conductors are arranged on the connecting plate side by side.

7. The sampling structure of a battery module according to claim 1, wherein:

the connector is provided with an inserting port, and the conductive terminal is electrically connected with the battery management system through a wire harness inserted into the inserting port.

8. The sampling structure of the battery module according to any one of claims 1 to 7, characterized in that:

and the sampling plate is arranged on the sampling plate and is electrically connected with each cell in one-to-one correspondence.

9. The utility model provides a battery module, includes two end plates of interval arrangement, arranges side by side in two a plurality of electric cores between the end plate, and be used for constituting a plurality of the busbar that electric core electricity is connected for install the busbar support of busbar, its characterized in that:

the battery module further includes the sampling structure of the battery module according to any one of claims 1 to 8.

10. The battery module according to claim 9, wherein:

the sampling plate is connected with the busbar bracket, and the connector is connected with the end plate.

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