CN215525909U

CN215525909U - Voltage detection device for electric core of energy storage system

Info

Publication number: CN215525909U
Application number: CN202023129655.9U
Authority: CN
Inventors: 杨瑞; 张雪云; 王明举
Original assignee: System Electronic Technology Zhenjiang Co ltd
Current assignee: System Electronic Technology Zhenjiang Co ltd
Priority date: 2020-12-23
Filing date: 2020-12-23
Publication date: 2022-01-14
Anticipated expiration: 2030-12-23

Abstract

The utility model discloses a voltage detection device for an energy storage system battery cell, which comprises a metal plate and a PCB (printed circuit board), wherein the metal plate and the PCB are overlapped up and down; the connected PCB and the metal connecting plate form an integral detecting electrode. The utility model adopts an integrated detection structure, can completely detect the voltage of the battery cell in a large batch at one time, does not need to use a wire harness, saves materials and improves the efficiency; the metal material can realize the connection with the PCB board at the connecting point through various connection modes, including welding connection, patch connection and the like, and because the standardization of the connecting point, the standard manufacture procedure is realized, and the reliability is improved.

Description

Voltage detection device for electric core of energy storage system

Technical Field

The utility model relates to the technical field of battery cell detection of energy storage devices, in particular to a voltage detection device for a battery cell of an energy storage system.

Background

At present, the electric quantity of the power battery industry or the energy storage system is different from thousands of watt-hour to thousands of watt-hour, and the large-scale energy storage system even can reach megawatt-hour. The number of the electric cores in the whole system is from dozens to tens of thousands, and in order to detect the module voltage, the voltage is usually acquired by fastening a wire harness screw or soldering a circuit board.

When there are many voltage points to be detected. These two approaches can have the following problems:

1. the variety of the lengths of the wire harness is large, the wire harness occupies large space, and meanwhile the instability probability of the connecting point is increased.

2. Soldering of the circuit board to the connection point can be time consuming, the soldering point is usually done manually, and reliability is low.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects of the prior art, and provides a voltage detection device for an energy storage system cell, which comprises a metal plate and a PCB (printed circuit board), wherein the metal plate and the PCB are overlapped up and down; the connected PCB and the metal connecting plate form an integral detecting electrode.

Furthermore, a plurality of first through holes are formed in the PCB.

Furthermore, a plurality of power connection units are arranged on the metal plate, and each power connection unit comprises two strip-shaped single sheets which are symmetrically arranged.

Furthermore, the number of the first through holes of the detection electrodes and the number of the power connection units are equal and the positions of the first through holes and the positions of the power connection units are overlapped.

Furthermore, a plurality of second through holes are arranged on the PCB.

In an optimized technical solution, preferably, the metal plate is provided with a plurality of heat dissipation holes.

Preferably, the second through holes and the heat dissipation holes of the detection electrodes have the same shape and the same number, and the positions of the second through holes and the positions of the heat dissipation holes are overlapped with each other.

In one implementation, further, the PCB board and the metal board are connected to each other by welding at the connection point.

In another implementation, further, the PCB board and the metal board are connected to each other through a patch at a connection point.

The operation principle is as follows: the voltage detection device of the battery cell comprises a PCB and a metal plate which form an integral detection electrode, when the battery cell is detected, the battery cell is arranged between two detection electrodes which are symmetrically arranged, the positive electrode and the negative electrode of the battery cell are respectively contacted with the metal plate, and the voltage of each battery cell is led out through the external interfaces of the PCB and the PCB, so that the voltage detection is realized.

Has the advantages that: the utility model adopts an integrated detection structure, can completely detect the voltage of the battery cell in a large batch at one time, does not need to use a wire harness, saves materials and improves the efficiency; the metal material can realize the connection with the PCB board at the connecting point through various connection modes, including welding connection, patch connection and the like, and because the standardization of the connecting point, the standard manufacture procedure is realized, and the reliability is improved.

Drawings

Fig. 1 is a schematic perspective view of a voltage detection device for an energy storage system cell;

FIG. 2 is a top view of a detection electrode;

FIG. 3 is a schematic diagram illustrating a usage status of the voltage detection device;

in the figure: 1. the PCB comprises a metal plate, 2, a PCB board, 11, a power connection monomer, 12, a strip-shaped single chip, 13, a heat dissipation hole, 21, a connection point, 22, an external interface, 23 and a first through hole. 24. A second through hole 3 and a battery core.

Detailed Description

For the purpose of enhancing the understanding of the present invention, the present invention will be further described in detail with reference to the following examples and the accompanying drawings, which are only used for explaining the present invention and are not to be construed as limiting the scope of the present invention.

In the first embodiment, as shown in fig. 1-2, a voltage detection device for an electrical core of an energy storage system includes a metal plate 1 and a PCB 2, which are overlapped from top to bottom, the PCB 2 is provided with a plurality of connection points 21, and is connected to the metal connection plate 1 through the connection points 21, and the PCB 2 is provided with an external interface 22; the connected PCB and the metal connecting plate form an integral detecting electrode.

In this embodiment, the PCB 2 is provided with a plurality of first through holes 23; the metal plate 1 is provided with a plurality of electric connection units 11, and each electric connection unit comprises two strip-shaped single sheets 12 which are symmetrically arranged; the first through holes 23 of the detection electrodes and the contact units 11 are equal in number and overlap each other in position.

In this embodiment, the PCB 2 is provided with a plurality of second through holes 24; the metal plate 1 is provided with a plurality of heat dissipation holes 13; the second through holes 24 and the heat dissipation holes 13 of the detection electrodes have the same shape and the same number, and the positions of the second through holes and the heat dissipation holes are overlapped.

In this embodiment, the PCB board 2 and the metal plate 1 are connected to each other by welding at the connection point.

As shown in fig. 3, the voltage detection device of the battery cell in the present invention includes an integrated detection electrode formed by a PCB and a metal plate, and when detecting the battery cell, the battery cell 3 is disposed between two detection electrodes symmetrically disposed, and the positive electrode and the negative electrode of the battery cell are respectively contacted with the metal plate, and the voltage of each battery cell is derived through the external interface of the PCB and the PCB, so as to implement voltage detection.

In the second embodiment, the PCB board 2 and the metal plate 1 are connected to each other through a patch located at a connection point.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A voltage detection device for an energy storage system battery cell is characterized by comprising a metal plate and a PCB which are overlapped up and down, wherein the PCB is provided with a plurality of connecting points and is connected with a metal connecting plate through the connecting points, and the PCB is provided with an external interface; the connected PCB and the metal connecting plate form an integral detecting electrode.

2. The voltage detection device as claimed in claim 1, wherein the PCB is provided with a plurality of first through holes.

3. The voltage detection device for the electric core of the energy storage system according to claim 1, wherein the metal plate is provided with a plurality of electric connection units, and each electric connection unit comprises two strip-shaped single sheets symmetrically arranged.

4. The voltage detection device as claimed in claim 2 or 3, wherein the first through hole of the detection electrode and the electrical connection unit are equal in number and are overlapped with each other.

5. The voltage detection device as claimed in claim 1, wherein the PCB is provided with a plurality of second through holes.

6. The apparatus according to claim 1, wherein the metal plate has a plurality of heat dissipation holes.

7. The device according to claim 5 or 6, wherein the second through holes and the heat dissipation holes of the detection poles have the same shape and the same number, and the positions of the second through holes and the heat dissipation holes are overlapped with each other.

8. The voltage detection device as claimed in claim 1, wherein the PCB board and the metal board are connected to each other by welding at a connection point.

9. The voltage detection device as claimed in claim 1, wherein the PCB board and the metal board are connected to each other through a patch at a connection point.