CN216145745U

CN216145745U - Voltage sampling point suitable for copper battery connecting piece

Info

Publication number: CN216145745U
Application number: CN202122182179.5U
Authority: CN
Inventors: 谢仁锋; 谢林江; 刘贻安; 朱勇光
Original assignee: Dongguan Wanlian Industry Co ltd
Current assignee: Dongguan Wanlian Industry Co ltd
Priority date: 2021-09-10
Filing date: 2021-09-10
Publication date: 2022-03-29
Anticipated expiration: 2031-09-10

Abstract

The utility model discloses a voltage sampling point suitable for a copper battery connecting piece, which comprises a PCB (printed Circuit Board), a copper sheet and a first voltage sampling point connector, wherein the second surface of the copper sheet is plated with nickel to form a nickel-plated surface. The first voltage sampling point connector can realize better welding and contact through PCB board and copper sheet, and the copper sheet of nickel plating is favorable to carrying out the laser welding operation with the battery connecting piece of copper, makes the copper sheet can realize better welding and contact with the battery connecting piece of copper, can solve the unable lug weld of current copper-clad PCB board or connector on the battery connecting piece of copper. In addition, first voltage sampling point connector can realize detachable the connection with the second voltage sampling point connector on the voltage sampling flexible circuit board, makes things convenient for battery connecting piece and voltage sampling flexible circuit board, when needs change the battery, need not to change together with voltage sampling flexible circuit board, the cost is reduced.

Description

Voltage sampling point suitable for copper battery connecting piece

Technical Field

The utility model relates to the technical field of battery connecting pieces, in particular to a voltage sampling point suitable for a copper battery connecting piece.

Background

In the industry of new energy batteries, battery voltage sampling points can be installed on battery connectors, and the connection mode of the current battery voltage sampling points can include the following: 1. drilling a hole in a copper bar of the battery connecting piece, connecting the hole with a nut screw, and pressing one end of a sampling wire harness with a connector; 2. a flexible PCB is adopted, a nickel sheet extends out of the side face of the flexible PCB, and the nickel sheet is welded on a copper bar of the battery connecting piece by using a laser welding technology; 3. one end (bare copper) of the sampling wire harness is directly welded on a copper bar of the battery connecting piece by using an ultrasonic welding technology. However, 1 st mode is connected with the nut screw rod, the manual installation is inconvenient, and it is not hard up easily, the contact is not good, 2 nd mode is welded the nickel piece with the laser welding technique, if follow-up will change the battery, the nickel piece can not be dismantled, can only change whole flexible PCB board together, the cost is too high, 3 rd mode is with ultrasonic welding technique copper line lug weld on the copper bar of battery connecting piece, if follow-up will change the battery, also can not dismantle, can only change whole sampling pencil together, the cost is higher.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art and provides a voltage sampling point suitable for a copper battery connecting piece.

In order to achieve the above object, a first aspect of the present invention provides a voltage sampling point suitable for a copper battery connecting piece, including a PCB, a copper sheet, and a first voltage sampling point connector, where the first voltage sampling point connector is welded on a first surface of the PCB, a plurality of copper welding points are arranged on a side surface of the PCB, the welding points of the PCB are electrically connected with pins of the first voltage sampling point connector through a circuit arranged on the PCB, the welding points of the PCB are welded on the first surface of the copper sheet, so that a second surface of the PCB is attached and fixed on the copper sheet, and the second surface of the copper sheet is plated with nickel, thereby forming a nickel-plated surface.

Preferably, the first voltage sampling point connector is provided as a plug type connector or a contact type connector.

Preferably, the thickness of the copper sheet is set to be 0.1mm to 0.4 mm.

Preferably, the first voltage sampling point connector is soldered on the first surface of the PCB by SMT reflow soldering.

Preferably, the welding points of the PCB are welded on the first surface of the copper sheet in an SMT reflow soldering mode.

Compared with the prior art, the utility model has the beneficial effects that:

1. the novel voltage sampling point comprises a PCB, a nickel-plated copper sheet and a first voltage sampling point connector, wherein the first voltage sampling point connector can realize better welding and contact with the copper sheet through the PCB, the nickel-plated copper sheet is favorable for laser welding operation with a copper battery connecting piece, so that the copper sheet can realize better welding and contact with the copper battery connecting piece, and the problem that the existing copper-plated PCB or connector cannot be directly welded on the copper battery connecting piece can be solved.

2. The first voltage sampling point connector adopted by the novel voltage sampling point can be detachably connected with the second voltage sampling point connector on the voltage sampling flexible circuit board, so that the battery connecting piece and the voltage sampling flexible circuit board are convenient, when a battery needs to be replaced, the battery does not need to be replaced together with the voltage sampling flexible circuit board, and the cost is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a novel voltage sampling point provided by an embodiment of the present invention;

FIG. 2 is a cross-sectional view of a nickel-plated copper sheet according to an embodiment of the present invention;

FIG. 3 is an assembly view of a voltage sampling point and a copper battery connection provided by an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a voltage sampling flexible circuit board and a second voltage sampling point connector according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 and 2, an embodiment of the present invention provides a voltage sampling point suitable for a copper battery connector, including a PCB board 2, a copper sheet 3 and a first voltage sampling point connector 4, and the following describes each component of the embodiment in detail with reference to the drawings.

As shown in fig. 1 and 2, the first voltage sampling point connector 4 is welded on the first surface of the PCB 2, the side surface of the PCB 2 is provided with a plurality of copper welding points 21, the welding points 21 of the PCB 2 are electrically connected with the pins of the first voltage sampling point connector 4 through the circuit arranged on the PCB 2, the welding points 21 of the PCB 2 are welded on the first surface of the copper sheet 3, so that the second surface of the PCB 2 is attached and fixed on the copper sheet 3, and the second surface of the copper sheet 3 is plated with nickel, thereby forming a nickel-plated surface 31.

In the present embodiment, the first voltage sampling point connector 4 may be soldered on the first surface of the PCB board 2 by SMT reflow soldering. The solder points 21 of the PCB board 2 can be soldered on the first surface of the copper sheet 3 by SMT reflow soldering.

Preferably, the first voltage sampling point connector 4 may be provided as a plug type connector, a contact type connector, or other various connectors that are easily detachable.

During specific implementation, the thickness of the copper sheet 3 can be preferably set to be 0.1-0.4 mm, the stability of the copper sheet is good at the moment, the problem of thermal expansion stress in reflow soldering can be well solved, damage such as cracking of the copper sheet 3 is prevented, the thermal capacity is not high, and reflow soldering operation is facilitated. In addition, the thickness setting can also reduce the energy requirement of laser welding, and the larger the thickness, the higher the energy requirement.

As shown in fig. 3, the voltage sampling point of the present embodiment can be welded to the copper battery connecting member 1, wherein the copper sheet 3 of the voltage sampling point can be welded to the battery connecting member 1 by laser welding. The welding type of the copper sheet 3 and the battery connecting piece 1 is linear, and the welding joint 7 is linear.

Wherein, set up the nickel coating between copper sheet 3 and copper battery connecting piece 1, be favorable to copper sheet 3 to weld together with copper battery connecting piece 1 through the laser welding mode.

During the specific use, detachable the connection can be realized with second voltage sampling point connector 6 on the voltage sampling flexible circuit board 5 to first voltage sampling point connector 4 of voltage sampling point, and second voltage sampling point connector 6 also sets up to plug type connector, contact type connector or other various convenient connectors of dismantling that match with first voltage sampling point connector 4. When the first voltage sampling point connector 4 is a male terminal, the second voltage sampling point connector 6 is a female terminal, and when the first voltage sampling point connector 4 is a female terminal, the second voltage sampling point connector 6 is a male terminal.

The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.

Claims

1. The utility model provides a voltage sampling point suitable for copper battery connecting piece, a serial communication port, includes PCB board, copper sheet and first voltage sampling point connector, first voltage sampling point connector welding is on the first surface of PCB board, the side of PCB board is equipped with the solder joint of a plurality of copper, the solder joint of PCB board passes through the circuit of arranging on the PCB board and is connected with the pin electricity of first voltage sampling point connector, the solder joint welding of PCB board is on the first surface of copper sheet to the second surface laminating that makes the PCB board is fixed on the copper sheet, the second of copper sheet is plated with nickel on the surface, thereby forms the nickel plating surface.

2. A voltage sampling point suitable for a copper battery connection member as claimed in claim 1, wherein the first voltage sampling point connector is provided as a plug type connector or a contact type connector.

3. The voltage sampling point suitable for the copper battery connecting piece is characterized in that the thickness of the copper sheet is set to be 0.1-0.4 mm according to claim 1.

4. The voltage sampling point suitable for the copper battery connecting piece according to claim 1, wherein the first voltage sampling point connector is welded on the first surface of the PCB board by an SMT reflow soldering method.

5. The voltage sampling point suitable for the copper battery connecting piece is characterized in that the welding points of the PCB are welded on the first surface of the copper sheet through an SMT (surface mount technology) reflow soldering method.