CN219267788U

CN219267788U - Single voltage and temperature acquisition device for switching between battery modules

Info

Publication number: CN219267788U
Application number: CN202320617351.1U
Authority: CN
Inventors: 陈涛; 朋佳丽; 李勇
Original assignee: Hefei Guoxuan High Tech Power Energy Co Ltd
Current assignee: Hefei Gotion High Tech Power Energy Co Ltd
Priority date: 2023-03-24
Filing date: 2023-03-24
Publication date: 2023-06-27
Anticipated expiration: 2033-03-24

Abstract

The utility model belongs to the technical field of battery performance monitoring, and relates to a device for collecting single voltage and temperature of transfer connection between battery modules, which comprises the following components: the system comprises an upper-level battery module, a lower-level battery module, a conductive connector and a battery management system; the upper battery module comprises a signal acquisition module, wherein the signal acquisition module is used for acquiring voltage and temperature signals of the battery; the upper battery module transmits the collected voltage and temperature signals to the lower battery module, the lower battery module comprises a plug-in connector, the plug-in connector receives the voltage and temperature signals and transmits the voltage and temperature signals to a conductive connector, and the conductive connector transmits the voltage and temperature signals to a battery management system for processing. The technical problems in the background technology can be well solved, the production efficiency is improved, the wire harness cost is reduced, and the project income can be further improved.

Description

Single voltage and temperature acquisition device for switching between battery modules

Technical Field

The utility model relates to a device for collecting the voltage and the temperature of a single transfer battery between battery modules, and belongs to the technical field of battery performance monitoring.

Background

The battery system is characterized in that each battery cell is combined in series/parallel to form a battery module with larger capacity and higher voltage, and then the battery modules are connected in series, so that the system platform voltage required by a project is reached, the current commercial vehicle or logistics vehicle mainly requires very high system voltage, so that more battery cells are arranged in the system, the increase of the number of battery cell strings brings about the increase of acquisition wiring harnesses, and the scheme is completed by switching the battery cell voltage and temperature information among the battery modules in order to optimize the layout of the wiring harnesses in a battery box and reduce the use amount of the wiring harnesses.

At present, after the battery monomer voltage and the temperature of a module group are acquired in a battery system, the battery monomer voltage and the temperature are directly and independently input to a BMS acquisition port, no battery monomer voltage and temperature information are transmitted between each module group, and due to the fact that the platform voltage in the system is higher, the number of the module groups is more, the number of wires in a battery box is increased, even the local space in the box does not meet the arrangement of the wires, or the risk that the wires interfere with structural members in the box is increased.

Disclosure of Invention

Aiming at the problems, the utility model aims to provide a device for collecting the voltage and the temperature of a single transfer battery module, which can better solve the technical problems existing in the background technology, improve the production efficiency, reduce the wire harness cost and further improve the project income.

In order to achieve the above purpose, the present utility model proposes the following technical solutions: a battery module inter-switching single voltage and temperature acquisition device comprises: the system comprises an upper-level battery module, a lower-level battery module, a conductive connector and a battery management system; the upper battery module comprises a signal acquisition module, wherein the signal acquisition module is used for acquiring voltage and temperature signals of a battery; the upper battery module transmits the collected voltage and temperature signals to the lower battery module, the lower battery module comprises a plug-in connector, the plug-in connector receives the voltage and temperature signals and transmits the voltage and temperature signals to the conductive connector, and the conductive connector transmits the voltage and temperature signals to the battery management system for processing.

Further, superior battery module includes flexible circuit board, nickel piece terminal and overflows the row, flexible circuit board includes temperature sensor for carry out temperature detection, the battery cell voltage signal is gathered to nickel piece terminal, temperature sensor with nickel piece terminal is connected, nickel piece terminal with overflows row fixed connection.

Further, the superior battery module further comprises an insert connector, wherein the insert connector is connected with the nickel sheet terminal, and a fuse is arranged between the overcurrent row and the nickel sheet terminal.

Further, pin pins of the plug-in connector are respectively connected with the voltage and temperature signal acquisition module.

Further, the temperature sensor adopts a patch type package, and the positions and the number of the temperature sensor are determined by the thermal simulation result of the module.

Further, the temperature sensor is an NTC thermistor.

Further, the superior battery module further comprises an integrated cover plate assembly, the integrated cover plate assembly is arranged above the battery cell, and the flexible circuit board is fixed on the integrated cover plate assembly.

Further, the integrated cover plate assembly comprises a plurality of stand columns, and the stand columns are matched with the fixing holes in the flexible circuit board.

Due to the adoption of the technical scheme, the utility model has the following advantages:

1. according to the utility model, the flexible circuit board FPC is adopted as the acquisition main body, and then the voltage and temperature switching is carried out through the inter-module connector, so that compared with the conventional method that the voltage and temperature information is input into the battery management system BMS acquisition port after each module is independently acquired, the complex wiring harness generated in the battery box can be avoided, the using amount of the wiring harness is reduced, and meanwhile, the cost of the wiring harness is reduced.

2. The scheme of the utility model improves the production efficiency, reduces the wire harness cost and can further improve the project income.

Drawings

FIG. 1 is a schematic diagram of a device for collecting cell voltages and temperatures for switching between battery modules according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of an in-module voltage and temperature acquisition device according to an embodiment of the utility model.

Reference numerals:

1-a battery cell; 2-upper battery module; 3-a lower battery module; a 4-conductive connector; 5-module connectors; 6-switching the wire harness; 7-a flexible circuit board; 8-nickel tab terminals; 9-integrated cover plate assembly.

Detailed Description

The utility model is depicted in detail by specific examples in order to provide a better understanding of the technical solution of the utility model to those skilled in the art. It should be understood, however, that the detailed description is presented only to provide a better understanding of the utility model, and should not be taken to limit the utility model. In the description of the present utility model, it is to be understood that the terminology used is for the purpose of description only and is not to be interpreted as indicating or implying relative importance.

In order to solve the problems that in the prior art, due to the fact that the voltage of a platform in a system is higher, the number of modules is more, the number of wire bundles in a battery box is increased, even the local space in the box does not meet the arrangement of the wire bundles, or the risk of interference between the wire bundles and structural members in the box is increased, and the like, the utility model provides a battery cell 1 voltage and temperature which are acquired by part of modules of a battery cell 1 voltage and temperature acquisition device for battery module switching, which are not directly transmitted to a Battery Management System (BMS), but are transmitted to a flexible circuit board of a next-stage module through connectors between the modules, and are transmitted to the battery management system BMS after being transmitted to the next-stage flexible circuit board. The current requirement for the voltage of a battery system platform is higher and higher, and accordingly, the number of the battery cells 1 is increased, the limitation of the space of a battery box body is limited, and practically, no sufficient space is available for arranging and fixing so many wire harnesses, and the upper-stage module is excessive to the lower stage. The following describes the utility model in more detail by way of examples with reference to the accompanying drawings.

Examples:

the embodiment discloses a single voltage of switching and temperature acquisition device between battery module, as shown in fig. 1, include: an upper battery module 2, a lower battery module 3, a conductive connector 4 and a battery management system; the upper battery module 2 comprises a signal acquisition module, wherein the signal acquisition module is used for acquiring voltage and temperature signals of the battery; the upper battery module 2 transmits the collected voltage and temperature signals to the lower battery module 3, the lower battery module 3 comprises a module connector 5, the module connector 5 receives the voltage and temperature signals and transmits the collected voltage and temperature signals to a conductive connector 4, and the conductive connector 4 transmits the voltage and temperature signals to a battery management system for processing. In this embodiment, the transfer wire harness 6 is disposed between the upper module and the lower module, and the voltage and temperature information collected by the upper module is transferred to the lower module connector 5, and the module connector 5 is transferred to the connector through the FPC, and the voltage and temperature information of the upper module are transferred to the conductive connector 4 of the lower module through the transfer wire harness 6.

As shown in fig. 2, the upper battery module 2 includes a flexible circuit board 7, a nickel plate terminal 8 and an overcurrent row, the flexible circuit board 7 includes a temperature sensor for performing temperature detection, the nickel plate terminal 8 is welded with the battery cell 1 to be detected, the voltage signal of the battery cell 1 is collected, each string of the voltage of the battery cell 1 is ensured to be collected, the temperature sensor is connected with the nickel plate terminal 8, and the nickel plate terminal 8 is fixedly connected with the overcurrent row. The temperature sensor in this embodiment is preferably an NTC thermistor. The flexible circuit board 7 is difficult to bend or break, and all the circuits that the signal acquisition module relates to are all arranged on the FPC, so that the use amount of the wire harness in the battery pack is further reduced, and the wire harness layout is optimized.

The upper battery module 2 further comprises a plug-in connector, the plug-in connector is connected with the nickel sheet terminal 8, and a fuse is arranged between the overcurrent row and the nickel sheet terminal 8. The pin of the plug-in connector is respectively connected with the voltage and temperature signal acquisition module to ensure that the voltage and temperature information of each battery cell 1 can be transmitted to the module connector 5,

the upper battery module 2 further comprises an integrated cover plate assembly 9, the integrated cover plate assembly 9 is arranged above the battery cells, the overcurrent row on the integrated cover plate assembly 9 is reliably connected with the battery cell electrode posts through welding, so that electric connection among the battery cells 1 is realized, and the flexible circuit board 7 is fixed on the integrated cover plate assembly 9. Specifically, in this embodiment, the integrated cover assembly 9 includes a plurality of columns, and the columns are matched with the fixing holes on the flexible circuit board 7.

In this embodiment, all the collected voltage and temperature information is input to the battery management system through the connector conduction connector 4, and the battery management system detects the battery information in real time, so as to ensure that the battery works under a proper working condition.

Through the technical scheme, the utility model has the following technical effects:

Finally, it should be noted that: the above embodiments are only for illustrating the technical aspects of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the above embodiments, it should be understood by those of ordinary skill in the art that: modifications and equivalents may be made to the specific embodiments of the utility model without departing from the spirit and scope of the utility model, which is intended to be covered by the claims. The foregoing is merely a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes or substitutions should be covered in the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A battery module inter-switching monomer voltage and temperature acquisition device is characterized by comprising: the system comprises an upper-level battery module, a lower-level battery module, a conductive connector and a battery management system;

the upper battery module comprises a signal acquisition module, wherein the signal acquisition module is used for acquiring voltage and temperature signals of a battery; the upper battery module transmits the collected voltage and temperature signals to the lower battery module, the lower battery module comprises a module connector, the module connector receives the voltage and temperature signals and transmits the voltage and temperature signals to the conductive connector, and the conductive connector transmits the voltage and temperature signals to the battery management system for processing.

2. The device for collecting the voltage and the temperature of the battery cells through the switching unit according to claim 1, wherein the upper battery module comprises a flexible circuit board, a nickel sheet terminal and an overcurrent row, the flexible circuit board comprises a temperature sensor for temperature detection, the nickel sheet terminal collects the voltage signals of the battery cells, the temperature sensor is connected with the nickel sheet terminal, and the nickel sheet terminal is fixedly connected with the overcurrent row.

3. The device for collecting the voltage and the temperature of the battery module according to claim 2, wherein the upper battery module further comprises a plug connector, the plug connector is connected with the nickel plate terminal, and a fuse is arranged between the overcurrent row and the nickel plate terminal.

4. The battery module-to-module switching cell voltage and temperature acquisition device of claim 3, wherein the pin of the plug-in connector is connected to the voltage and temperature signal acquisition module, respectively.

5. The device for collecting the voltage and the temperature of the battery module-to-module switching unit according to claim 2, wherein the temperature sensor is packaged in a patch type, and the positions and the number of the temperature sensor are determined by the module thermal simulation result.

6. The battery module-to-battery module switching cell voltage and temperature acquisition device of claim 5, wherein the temperature sensor is an NTC thermistor.

7. The device for collecting the voltage and the temperature of the battery module according to claim 2, wherein the upper battery module further comprises an integrated cover assembly, the integrated cover assembly is arranged above the battery cells, and the flexible circuit board is fixed on the integrated cover assembly.

8. The battery module to battery module switching cell voltage and temperature acquisition device of claim 7, wherein the integrated cover assembly includes a plurality of posts that mate with mounting holes on the flexible circuit board.