CN217718030U

CN217718030U - Voltage and temperature signal acquisition device for low-voltage lithium battery for vehicle

Info

Publication number: CN217718030U
Application number: CN202221110356.7U
Authority: CN
Inventors: 肖鹏; 宋小梅; 孙光忠; 娄勇刚
Original assignee: Camel Group New Energy Battery Co Ltd
Current assignee: Camel Group New Energy Battery Co Ltd
Priority date: 2022-05-10
Filing date: 2022-05-10
Publication date: 2022-11-01
Anticipated expiration: 2032-05-10

Abstract

The utility model relates to a power battery technology field discloses an automobile-used low pressure lithium cell voltage temperature signal acquisition device, including the FPCB main part, be fixed wired in the FPCB main part to panel end connector one, a pair of electricity connection of inserting of line pair panel line termination plug-in components one and the line pair panel line termination plug-in components that are fixed in patch cord one end, the fixed line pair panel line termination plug-in components two of patch cord other end and the battery management system on the line pair panel line termination plug-in components two pairs insert the electricity connection, the utility model has the advantages of it is following and effect: can compatible collection terminal installation fixed convenience and circuit walk the line convenience, realize battery management system to the collection of electric core voltage, temperature real-time status signal, spare part and manufacturing process all can follow conventional collection line and FPCB's spare part and manufacturing process simultaneously, and the suitability is strong, need not to set up the production line alone, reduce cost.

Description

Voltage and temperature signal acquisition device for low-voltage lithium battery for vehicle

Technical Field

The utility model relates to a power battery technical field, in particular to automobile-used low pressure lithium cell voltage temperature signal collection system.

Background

With the wide development of electric automobiles, higher requirements are put on lithium batteries, so that a battery management system is arranged to protect the batteries in use, and the batteries can be better protected only by effectively and reliably collecting the voltage and the temperature of the batteries in the battery management system.

At present, the voltage and temperature signal acquisition device for the commonly used low-voltage lithium battery for the vehicle comprises the following two types: 1. collecting wires: the acquisition line structure is formed by connecting a line end acquisition terminal, a lead, a line pair plate and a line end connector in series; 2. FPCB: the FPCB structure is formed by connecting a board end acquisition terminal, an FPCB main body and a board end connector in series (board-to-board). The line end acquisition terminal/plate end acquisition terminal of the acquisition device is fixedly contacted with the switching copper bar of the battery core lug/the battery core lug (welding, screwing and the like), and the line end connector/(plate-to-plate) plate end connector of the acquisition device and the line end connector/(plate-to-plate) plate end connector of the Battery Management System (BMS) are fixedly inserted so as to realize the acquisition of the Battery Management System (BMS) on the real-time state signals of the battery core voltage and the temperature. However, the low-voltage lithium battery for the vehicle is compact in space, and if the acquisition lines are used for acquisition, the circuit wiring is convenient, but the installation and fixation of the line end acquisition terminals are complex, and the installation efficiency is low during batch production; if use FPCB to gather, board end acquisition terminal installation is fixed convenient, but the circuit walking line requires highly to the internal structure overall arrangement of battery, easily improves battery structure cost. And the board end connector of the Battery Management System (BMS) can not be compatible with the (line to board) line end connector of the acquisition line and the (board to board) board end connector of the FPCB simultaneously, which is not beneficial to the generalization of battery parts and indirectly improves the battery cost.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a low pressure lithium cell voltage temperature signal collection system for vehicle has the fixed convenience of compatible collection terminal installation and the effect of line convenience is walked to the circuit.

The above technical purpose of the present invention can be achieved by the following technical solutions: including the FPCB main part, its characterized in that: the FPCB comprises a FPCB body, a pair of line-to-board end connectors, a pair of line-to-board end connector I, a pair of line-to-board line end connector II and a pair of line-to-board line end connector II, wherein the pair of line-to-board end connector I is fixed on the FPCB body, the pair of line-to-board end connector I is electrically connected with a pair of line-to-board line end connector II fixed at one end of a patch cord in a plugging mode, and the pair of line-to-board line end connector II fixed at the other end of the patch cord is electrically connected with a pair of line-to-board end connector II on a battery management system in a plugging mode.

The utility model discloses a further set up to: the first line pair board line termination plug-in unit in the FPCB main body and the second line pair board line termination plug-in unit in the battery management system are of the same type as each other.

The utility model discloses a further set up to: the FPCB main part edge is stretched out and is provided with the board end and gathers the terminal, the contact is fixed with utmost point ear subassembly on the board end gathers the terminal, utmost point ear subassembly includes single electric core utmost point ear and electric core utmost point ear switching copper bar.

The utility model discloses a further set up to: the number of the plate end acquisition terminals is more than one.

The utility model discloses a further set up to: the plate end collecting terminal is a nickel sheet, and the thickness of the plate end collecting terminal is 0.2-0.3mm.

The utility model discloses a further set up to: and a reinforcing plate is arranged on the bottom surface of the FPCB main body below the line pair board terminating plug-in unit I.

The utility model has the advantages that:

1. the fixed line is to board end connector on the FPCB main part, replaces the board to board end connector fixed in the FPCB in the past, utilizes the fixed line pair board line termination plug-in components one and line pair board line termination plug-in components two in patch cord and patch cord both ends, is connected FPCB main part and battery management system for it is convenient to walk the line among the whole collection system, adopts the circuit to walk the line and is showing reduction battery structure cost when guaranteeing the acquisition result accuracy.

2. The edge of FPCB main part stretches out fixed a plurality of board ends and gathers the terminal, promotes the fixed convenience of gathering the terminal installation, shortens the installation fixed time, also can be better simultaneously be fixed in board end with electric core utmost point ear on the terminal, be favorable to batch production, is showing the work efficiency who promotes batch production.

3. The first line pair board line termination plug-in unit and the second line pair board line termination plug-in unit are of the same type and can be matched with wires of the same type, so that when the first line pair board line termination plug-in unit and the second line pair board line termination plug-in unit in the battery management system are respectively plugged into two ends of a patch cord, the stability of circuit transmission can be guaranteed, and the accuracy of a collection result is guaranteed.

4. Set up the stiffening plate to the bottom surface of the FPCB main part of a board end connector below on line, can promote the structural strength of whole device, increase of service life.

5. Set up above-mentioned collection system, can compatible collection terminal installation fixed convenience and circuit walk the line convenience, realize battery management system to electric core voltage, temperature real-time status signal's collection, spare part and manufacturing process can all follow conventional collection line and FPCB's spare part and manufacturing process simultaneously, and the suitability is strong, need not to set up the production line alone, reduce cost.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic circuit diagram of the present invention.

Fig. 2 is a schematic structural diagram of an embodiment of the present invention.

In the figure, 1, a tab assembly; 2. a board end acquisition terminal; 3. a FPCB body; 4. the wire pair board is connected with the first plug-in unit; 5. the wire pair board wire is connected with the first plug-in unit; 6. a patch cord; 7. the wire of the wire pair board is connected with a second plug-in unit; 8. the wire pair board is connected with the second plug-in unit; 9. a battery management system.

Detailed Description

The technical solution of the present invention will be clearly and completely described below with reference to the specific embodiments. It is to be understood that the disclosed embodiments are merely exemplary of the invention, and are not intended to limit the invention to the precise embodiments disclosed. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.

The embodiment of the invention relates to a voltage and temperature signal acquisition device for a low-voltage lithium battery for a vehicle, which comprises a board end acquisition terminal 2, an FPCB main body 3 and a line pair board end connection plug-in unit I4 which are connected in series, wherein the line pair board end connection plug-in unit I4 is connected with the line pair board line end connection plug-in unit I5 in a plug-in mode, and the line pair board line end connection plug-in unit I5, a patch cord 6 and the line pair board line end connection plug-in unit II 7 are connected in series.

As shown in fig. 1-2, a first wire-to-board terminating plug-in unit 4 is fixed on a FPCB body 3, the first wire-to-board terminating plug-in unit 4 is electrically connected to a first 5 wire-to-board wire terminating plug-in unit fixed at one end of a patch cord 6, a second 7 wire-to-board wire terminating plug-in unit fixed at the other end of the patch cord 6 is electrically connected to a second 8 wire-to-board terminating plug-in unit on a battery management system 9, the patch cord 6 is UL1332, and the wire diameter is 22AWG, and the FPCB body 3 is connected to the battery management system 9 by using the patch cord 6, so as to replace the board-to-board end plug-in unit fixed in the past FPCB, thereby facilitating the wiring in the whole collection device, and significantly reducing the cost of the battery structure while ensuring the accuracy of the collection result by using circuit wiring.

As shown in fig. 1-2, the first wire pair board wire termination plug-in unit 5 and the second wire pair board wire termination plug-in unit 7 are of the same type and can be matched with wires of the same type, so that when the first wire pair board termination plug-in unit 4 of the patch cord 6, which is plugged in the FPCB main body 3, and the second wire pair board termination plug-in unit 8 of the battery management system 9, the stability of circuit transmission can be ensured, and the accuracy of the acquisition result can be ensured.

As shown in fig. 1-2, plate end acquisition terminal 2 is nickel sheet, thickness is 0.3mm, nickel material easily welds and electrically conducts well, every plate end acquisition terminal 2 goes up the contact welding and has electric core utmost point ear or electric core utmost point ear switching copper bar, design a plurality of plate end acquisition terminal 2 and can promote acquisition terminal installation fixed convenience, shorten the fixed time of installation, also can be better simultaneously be fixed in plate end acquisition terminal 2 with electric core utmost point ear on, be favorable to batch production, show the work efficiency who promotes batch production

As shown in fig. 2, the bottom surface of the FPCB body 3 below the line-to-board termination plug-in unit 4 is provided with a reinforcing plate, which can improve the structural strength of the whole device and prolong the service life.

The working principle of the voltage and temperature signal acquisition device for the low-voltage lithium battery for the vehicle is as follows:

the battery terminal lug is welded and fixed on the plate end acquisition terminal 2, then the wire pair plate end connection plug-in component I4 and the wire pair plate wire end connection plug-in component I5 are connected in an opposite-inserting mode, then the wire pair plate wire end connection plug-in component II 7 and the wire pair plate end connection plug-in component II 8 are connected in an opposite-inserting mode, the whole acquisition device can start to acquire data after being assembled, the acquisition device adopting the connection mode can be compatible with the installation and fixation convenience of the acquisition terminal and the wiring convenience of a circuit, the acquisition of the battery management system 9 on the voltage and temperature real-time state signals of the battery cell can be realized, meanwhile, the parts and the manufacturing process can follow the parts and the manufacturing process of the conventional acquisition line and FPCB, the adaptability is strong, the production line does not need to be independently arranged, and the cost is reduced.

Claims

1. The utility model provides a vehicle low pressure lithium cell voltage temperature signal pickup assembly, includes FPCB main part (3), its characterized in that: fixed wired pair of board end connector (4) on FPCB main part (3), pair board line termination plug-in components (4) and be fixed in pair board line termination plug-in components (5) of patch cord (6) one end are to the electricity of pegging graft, pair board line termination plug-in components two (7) and pair board termination plug-in components two (8) on battery management system (9) that patch cord (6) other end is fixed are to the electricity of pegging graft.

2. The voltage and temperature signal acquisition device for the low-voltage lithium battery of the vehicle as claimed in claim 1, characterized in that: the line pair board line termination plug-in unit (4) in the FPCB main body (3) and the line pair board line termination plug-in unit (5) and the line pair board line termination plug-in unit (7) of the battery management system (9) are of the same type respectively.

3. The voltage and temperature signal acquisition device for the low-voltage lithium battery of the vehicle as claimed in claim 2, characterized in that: FPCB main part (3) edge is stretched out and is provided with board end acquisition terminal (2), the contact is fixed with utmost point ear subassembly (1) on board end acquisition terminal (2), utmost point ear subassembly (1) includes single electric core utmost point ear and electric core utmost point ear switching copper bar.

4. The voltage and temperature signal acquisition device for the low-voltage lithium battery of the vehicle as claimed in claim 3, characterized in that: the number of the plate end collecting terminals (2) is more than one.

5. The voltage and temperature signal acquisition device for the low-voltage lithium battery of the vehicle as claimed in claim 4, wherein: the plate end collecting terminal (2) is a nickel sheet, and the thickness of the plate end collecting terminal (2) is 0.2-0.3mm.

6. The voltage and temperature signal acquisition device for the low-voltage lithium battery of the vehicle as claimed in claim 5, characterized in that: and a reinforcing plate is arranged on the bottom surface of the FPCB main body (3) below the line pair board terminating plug-in unit I (4).