CN218385364U

CN218385364U - Battery voltage temperature acquisition device and battery module

Info

Publication number: CN218385364U
Application number: CN202221727630.5U
Authority: CN
Inventors: 朱利安; 夏晨强; 郑益; 王浩; 傅剑军
Original assignee: Hangzhou Gold Electronic Equipment Co Ltd
Current assignee: Hangzhou Gold Electronic Equipment Co Ltd
Priority date: 2022-07-05
Filing date: 2022-07-05
Publication date: 2023-01-24
Anticipated expiration: 2032-07-05

Abstract

The utility model belongs to the technical field of battery management, especially, relate to a battery voltage temperature acquisition device and battery module, the device includes: the PCB comprises a PCB and a nickel sheet connected to the PCB, wherein one end of the nickel sheet is provided with a first connecting section which is arranged on the surface of the PCB in a clinging manner; an NTC temperature sensor is arranged on the first connecting section, and an acquisition end of the NTC temperature sensor penetrates through a through hole on the first connecting section to be connected to the PCB; when the temperature sensor is used, the other end of the nickel sheet is connected to the battery, the PCB collects voltage information through the nickel sheet, and temperature information is collected through the NTC temperature sensor. The utility model has the advantages that through set up the nickel piece between battery and PCB board to set up NTC temperature sensor on the nickel piece, can monitor the voltage and the temperature of a plurality of batteries simultaneously, reduced the quantity of pencil simultaneously, improve the packaging efficiency of battery module.

Description

Battery voltage temperature acquisition device and battery module

Technical Field

The utility model belongs to the technical field of battery management, especially, relate to a battery voltage temperature acquisition device and battery module.

Background

The rapid development of new energy fields (such as electric vehicles and energy storage power stations) enables a large number of electrochemical batteries such as lithium ion power batteries or lead-acid storage batteries to be applied. The environment such as electric automobile, energy storage power station all need adopt a large amount of batteries to constitute the high pressure, and for adapting to group battery safe operation, it is indispensable to be equipped with corresponding battery management system. Due to the design of electric automobiles and energy storage power stations, the use environment and the like, the number of batteries is large, and a large number of battery management modules are inevitably adopted. Particularly, when the high-capacity energy storage power station is used, a large number of batteries are firstly connected in parallel and then connected in series, or are only connected in series to form a battery cluster, then a plurality of battery clusters are connected in parallel to form a battery stack, and the plurality of battery stacks form an energy storage battery system.

At present, a mainstream battery management system mainly collects physical quantities such as voltage, current and temperature of a battery, eliminates abnormal operation of the battery, and enables the battery to operate in a normal voltage and current range. However, compared with the voltage monitoring of the battery, the temperature of the battery is not monitored like the voltage of each battery, which results in the generation of a monitoring blind area. Meanwhile, the original NTC temperature sensor also has the problems that the number of used wires is more, and the like.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, the present invention provides a battery voltage temperature acquisition device and battery module, which can simultaneously acquire the voltage and temperature of a plurality of batteries by setting a nickel sheet between the battery and the PCB board and by setting an NTC temperature sensor on the nickel sheet, and reduce the number of wire harnesses.

For the purpose of the utility model, the following technical scheme is adopted for implementation:

a battery voltage temperature acquisition device, the device comprising: the PCB comprises a PCB and a nickel sheet connected to the PCB, wherein one end of the nickel sheet is provided with a first connecting section which is arranged on the surface of the PCB in a clinging manner; an NTC temperature sensor is arranged on the first connecting section, and an acquisition end of the NTC temperature sensor penetrates through a through hole on the first connecting section to be connected to the PCB; when the temperature sensor is used, the other end of the nickel sheet is connected to the battery, the PCB collects voltage information through the nickel sheet, and temperature information is collected through the NTC temperature sensor.

Preferably, the other end of the nickel sheet is provided with a second connecting section, and the second connecting section is used for being tightly attached to a connecting strip on the battery.

Preferably, one side of the first connection section is provided with a protrusion, and the protrusion is fittingly disposed in a recess at one side of the PCB board.

Preferably, the first connecting section is provided with a pair of clamping sheets, the clamping sheets protrude out of the surface of the first connecting section, a mounting opening is formed between the pair of clamping sheets, and the NTC temperature sensor is positioned in the mounting opening.

Preferably, an insulation layer is disposed on an outer side of the NTC temperature sensor, and the insulation layer is used for fixing the NTC temperature sensor on the first connection section and isolating the NTC temperature sensor from the outside.

Preferably, the barrier layer is an epoxy resin.

A battery module, comprising: the battery voltage and temperature acquisition device comprises a plurality of batteries, connecting strips arranged on battery poles of the batteries and the battery voltage and temperature acquisition device; one end of the nickel sheet is connected on the PCB board, and the other end of the nickel sheet is connected on the connecting strip.

To sum up, the utility model has the advantages that through set up the nickel piece between battery and PCB board to set up NTC temperature sensor on the nickel piece, can monitor the voltage and the temperature of a plurality of batteries simultaneously, reduced the quantity of pencil simultaneously, improve the packaging efficiency of battery module.

Drawings

Fig. 1 is a schematic structural view of a battery.

Fig. 2 is a side view of fig. 1.

Fig. 3 is a schematic structural diagram of the battery temperature acquisition device mounted on the battery and the PCB board.

Fig. 4 is a schematic structural diagram of the battery temperature acquisition device mounted on the battery.

Fig. 5 is a schematic structural diagram of the battery temperature acquisition device and the PCB.

Detailed Description

As shown in fig. 1, when the number of the batteries 1 is two or more, it is common to use them in series to form a battery pack, thereby increasing the voltage. Namely, a connecting bar 2 (such as copper or aluminum) with good conductivity is arranged between the battery poles 11 of two adjacent batteries 1. Generally, a battery pack is provided with 1 or more battery management modules, or a PCB board 3 (i.e., a battery management module in a PCB manner) is provided inside a battery module formed of a plurality of batteries to detect information such as voltage, pack current, etc. of each battery 1.

As shown in fig. 1 and 2, in order to perform temperature collection of the inside of the battery pack as described above while detecting a voltage, the present application provides a battery voltage temperature collection device including a nickel plate 4 and an NTC temperature sensor 5 (thermistor) disposed on the nickel plate 4. The lower end of the nickel plate 4 is disposed on the connection bar 2, the upper end of the nickel plate 4 is disposed on the PCB 3, and generally, the upper end of the nickel plate 4 is directly connected to a voltage collecting region of the PCB 3, so that the PCB 3 can collect voltage information through the nickel plate 4. The reason for adopting the nickel plate 4 is that the nickel plate 4 not only has good electrical conductivity, but also has good thermal conductivity, so that when the NTC temperature sensor 5 is arranged on the nickel plate 4, the NTC temperature sensor 5 can better detect the change of temperature. Meanwhile, as shown in fig. 5, the acquisition end 51 of the NTC temperature sensor 5 is connected to a temperature acquisition circuit on the PCB 3, and the PCB 3 acquires the temperature information of the battery by acquiring the resistance information of the NTC temperature sensor 5.

As shown in fig. 3 and 5, in order to facilitate the installation between the NTC temperature sensor 5 and the PCB 3, a first connection section 41 closely attached to the PCB 3 is provided at an upper portion of the nickel plate 4, the first connection section 41 has a certain length and extends linearly, the NTC temperature sensor 5 is provided at the first connection section 41, and the first connection section 41 has a through hole 411 through which the collecting terminal 51 of the NTC temperature sensor 5 passes.

As shown in fig. 3, in order to facilitate the installation of the nickel plate 4 on the connection bar 2, a second connection section 42 closely attached to the connection bar 2 is provided at a lower portion of the nickel plate 4, and the second connection section 42 has a certain length and extends linearly.

By providing the first connection section 41 and the second connection section 42, the entire nickel plate 4 is substantially zigzag-shaped, and the stability of the nickel plate 4 after mounting can be improved.

As shown in fig. 4, an upward protrusion 43 is provided on the upper portion of the nickel plate 4 at a side of the first connection section 41, and the protrusion 43 is fitted in the recess 31 of the PCB board 3 (see fig. 5), so that the connection strength of the nickel plate 4 is further improved, and the nickel plate 4 is prevented from being deformed.

As shown in fig. 5, in order to accurately position the NTC temperature sensor 5 on the nickel plate 4 when mounting the NTC temperature sensor 5 and to improve the stability of the NTC temperature sensor 5 after mounting, a pair of clamping pieces 412 facing each other and protruding from the surface of the first connecting section 41 are provided on the first connecting section 41 of the nickel plate 4, and a mounting opening for mounting the NTC temperature sensor 5 is formed inside the pair of clamping pieces 412. The clip 412 may be formed by the nickel plate 4 being hollowed out and folded upward.

When mounting the NTC temperature sensor 5, the NTC temperature sensor 5 is first placed into the mounting opening, and the opposite sides of the NTC temperature sensor 5 abut against the inner side walls of the snap tabs 412, thereby ensuring that the NTC temperature sensor 5 can be accurately positioned in the mounting opening.

Further, an epoxy 6 (see fig. 3) may be provided on an outer side of the NTC temperature sensor 5, the NTC temperature sensor 5 is fixed in the mounting opening, and the NTC temperature sensor 5 can be isolated from the outside, improving performance (e.g., waterproof performance) of the NTC temperature sensor 5.

After the device is arranged on the battery pack, the temperature of the battery is transmitted to the nickel sheet 4 through the connecting strip 2, the NTC temperature sensor 5 can change the resistance according to the temperature of the nickel sheet 4, so that the temperature information of the battery can be collected by the PCB, the device can simultaneously collect the voltage and temperature information of a plurality of batteries, and meanwhile, the use of a wiring harness is reduced through the arrangement of the nickel sheet 4.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention, including by way of illustration of the disclosed embodiments. Various modifications to these embodiments will be readily apparent to those skilled in the art. The general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A battery voltage temperature acquisition device, the device comprising: the PCB comprises a PCB (3) and a nickel sheet (4) connected to the PCB (3), wherein one end of the nickel sheet (4) is provided with a first connecting section (41), and the first connecting section (41) is tightly attached to the surface of the PCB (3); an NTC temperature sensor (5) is arranged on the first connecting section (41), and a collecting end (51) of the NTC temperature sensor (5) passes through a through hole (411) on the first connecting section (41) and is connected to the PCB (3); when the temperature sensor is used, the other end of the nickel sheet (4) is connected to the battery (1), the PCB (3) collects voltage information through the nickel sheet (4), and temperature information is collected through the NTC temperature sensor (5).

2. The battery voltage and temperature acquisition device according to claim 1, wherein the other end of the nickel sheet (4) is provided with a second connecting section (42), and the second connecting section (42) is used for being tightly attached to the connecting strip (2) on the battery (1).

3. A battery voltage temperature acquisition arrangement according to claim 1, characterized in that the first connection section (41) is provided with a protrusion (43) on one side and that the protrusion (43) is fittingly arranged in a recess (31) on one side of the PCB board (3).

4. A battery voltage temperature acquisition apparatus according to claim 1, wherein the first connection section (41) is provided with a pair of clamping pieces (412), the clamping pieces (412) protrude from the surface of the first connection section (41) and form a mounting opening between the pair of clamping pieces (412), and the NTC temperature sensor (5) is located in the mounting opening.

5. A battery voltage temperature acquisition apparatus according to claim 1, characterized in that an insulation layer is provided on the outside of the NTC temperature sensor (5), the insulation layer being used to fix the NTC temperature sensor (5) to the first connection section (41) and to insulate the NTC temperature sensor (5) from the outside.

6. A battery voltage temperature acquisition arrangement according to claim 5, characterized in that the isolating layer is an epoxy resin (6).

7. A battery module, comprising: a plurality of batteries (1), a connecting strip (2) arranged on a battery post (11) of a battery (1), and a battery voltage temperature acquisition device according to any one of claims 1 to 6; one end of the nickel sheet (4) is connected to the PCB (3), and the other end of the nickel sheet (4) is connected to the connecting strip (2).