CN211295294U

CN211295294U - Mounting structure of lithium battery protection board and plug

Info

Publication number: CN211295294U
Application number: CN202020400407.4U
Authority: CN
Inventors: 徐明达; 仝敬猛; 韦群; 吕开亮
Original assignee: Huizhou Walker Energy Technology Co ltd
Current assignee: Huizhou Walker Energy Technology Co ltd
Priority date: 2020-03-25
Filing date: 2020-03-25
Publication date: 2020-08-18
Anticipated expiration: 2030-03-25

Abstract

The utility model discloses a mounting structure of lithium battery protection board and plug, through setting up fixed frame, set up the inner chamber in fixed frame, then set up fixed pipe, inner tube and connector in the inner chamber again, make fixed pipe and inner tube be connected through compression spring, set up the cardboard at the back of circuit board, set up the spread groove on the cardboard, can make the connector block into in the spread groove under compression spring's drive, make the cardboard can be fastened in the inner chamber, thus can make the circuit board fasten before fixed frame, realize the installation of circuit board; the connecting window is arranged on one side of the shell, and the metal terminal is arranged in the connecting window, so that the metal terminal is connected with the plug body through a lead, the plug is installed, and the installation is convenient; then set up the take-up roll again, make the wire convolute on the take-up roll, can not only conveniently collect, simultaneously, can also protect the plug, avoid the plug to expose for a long time outside, receive the damage easily.

Description

Mounting structure of lithium battery protection board and plug

Technical Field

The utility model relates to a mounting structure specifically is a mounting structure of lithium cell protection shield and plug.

Background

The lithium battery protection board is used for charging and discharging protection of the series lithium battery pack; when the battery pack is fully charged, the voltage difference between the single batteries can be ensured to be smaller than a set value (generally +/-20 mV), the uniform charging of the single batteries of the battery pack is realized, and the charging effect in a series charging mode is effectively improved; simultaneously, the overvoltage, undervoltage, overcurrent, short circuit and overtemperature states of each single battery in the battery pack are detected, so that the service life of the battery is protected and prolonged; the undervoltage protection prevents each single battery from being damaged by overdischarge when the single battery is used for discharging.

At present, lithium cell protection shield is the direct mount on the lithium cell, leads to lithium cell protection shield and lithium cell, and the lithium cell is not convenient enough with being connected of plug, to this, needs to improve.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a mounting structure of lithium battery protection shield and plug to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a mounting structure of a lithium battery protection board and a plug comprises a shell, a lithium battery body arranged in the shell and a circuit board electrically connected with the lithium battery body, wherein a fixed frame is fixed on the inner wall of the shell, and an inner cavity is formed in the fixed frame; the back of the circuit board is fixedly provided with a clamping plate, the clamping plate is clamped into an inner cavity of a fixed frame, one side, far away from the lithium battery body, of the fixed frame is fixedly provided with a fixed tube, an inner tube extends into the fixed tube, the inner tube is connected with the fixed tube through a compression spring, one end, far away from the fixed tube, of the inner tube is fixedly provided with a connector, one side, close to the connector, of the clamping plate is provided with a connecting groove, and the connector is clamped into the connecting groove; one side of the shell is provided with a connecting window, and a winding roll and a plug body are arranged in the connecting window.

As a further aspect of the present invention: the top of inner chamber is the setting of opening form, visual window has been seted up to one side of fixed frame, visual window is linked together with the inner chamber.

As a further aspect of the present invention: still be provided with the metal terminal in the connection window, the metal terminal is connected with lithium cell body electricity, the metal terminal with pass through the wire electricity with the plug body and be connected, just the wire is convoluteed on the spiral roller.

As a further aspect of the present invention: and a battery cell socket is also arranged in the connecting window and is electrically connected with the circuit board.

As a further aspect of the present invention: and a protective cover is connected outside the connecting window.

As a further aspect of the present invention: and a limiting ring is fixed at the bottom end of the connector.

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

1. the fixing frame is arranged, the inner cavity is formed in the fixing frame, then the fixing tube, the inner tube and the connector are arranged in the inner cavity, the fixing tube is connected with the inner tube through the compression spring, the clamping plate is arranged on the back face of the circuit board, the connecting groove is formed in the clamping plate, the connector can be clamped into the connecting groove under the driving of the compression spring, the clamping plate can be fastened in the inner cavity, and therefore the circuit board can be fastened in front of the fixing frame and the circuit board can be mounted;

2. the connecting window is arranged on one side of the shell, and the metal terminal is arranged in the connecting window, so that the metal terminal is connected with the plug body through a lead, the plug is installed, and the installation is convenient; then set up the take-up roll again, make the wire convolute on the take-up roll, can not only conveniently collect, simultaneously, can also protect the plug, avoid the plug to expose for a long time outside, receive the damage easily.

Drawings

Fig. 1 is the whole structure diagram of the installation structure of the lithium battery protection board and the plug of the present invention.

Fig. 2 is the utility model relates to a mounting structure's of lithium battery protection shield and plug lithium battery protection shield's installation map.

Fig. 3 is a cross-sectional view of the fixing frame of the mounting structure for the lithium battery protection board and the plug of the present invention.

Fig. 4 is a front view of a connection window of a mounting structure for a lithium battery protection board and a plug of the present invention.

Fig. 5 is a structural diagram of a winding roll of the installation structure of the lithium battery protection board and the plug of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 4, in an embodiment of the present invention, an installation structure of a lithium battery protection board and a plug includes a housing 1, a lithium battery body 2 disposed inside the housing 1, and a circuit board 4 electrically connected to the lithium battery body 2, wherein a fixing frame 3 is fixed on an inner wall of the housing 1, and an inner cavity 5 is disposed inside the fixing frame 3; the back of the circuit board 4 is fixed with a clamping plate 6, the clamping plate 6 is clamped into an inner cavity 5 of a fixed frame 3, one side, far away from the lithium battery body 2, in the fixed frame 3 is fixed with a fixed tube 10, an inner tube 11 extends into the fixed tube 10, the inner tube 11 is connected with the inside of the fixed tube 10 through a compression spring 13, one end, far away from the fixed tube 10, of the inner tube 11 is fixed with a connector 12, one side, close to the connector 12, of the clamping plate 6 is provided with a connecting groove 14, and the connector 12 is clamped into the connecting; a connecting window 7 is arranged on one side of the shell 1, and a winding roll 15 and a plug body 19 are arranged in the connecting window 7; by arranging the fixed frame 3, the inner cavity 5 is arranged in the fixed frame 3, then the fixed tube 10, the inner tube 11 and the connector 12 are arranged in the inner cavity 5, the fixed tube 10 and the inner tube 11 are connected through the compression spring 13, the clamping plate 6 is arranged on the back surface of the circuit board 4, the connecting groove 14 is arranged on the clamping plate 6, the connector 12 can be clamped into the connecting groove 14 under the driving of the compression spring 13, the clamping plate 6 can be fastened in the inner cavity 5, and the circuit board 4 can be fastened in front of the fixed frame 3, so that the circuit board 4 can be installed; the connecting window 7 is arranged on one side of the shell 1, the metal terminal 16 is arranged in the connecting window 7, and the metal terminal 16 is connected with the plug body 19 through the lead 18, so that the plug is installed conveniently.

Referring to fig. 1 to 3, the top end of the inner cavity 5 is open, a visible window 9 is disposed on one side of the fixed frame 3, and the visible window 9 is communicated with the inner cavity 5; a limiting ring is fixed at the bottom end of the connector 12; when cardboard 6 is connected with connector 12, if connect inconveniently, stretch into the spacing intra-annular through the slender pole, then control connector 12 stretches into in cardboard 6's the spread groove 14, realizes being connected of cardboard 6 and connector 12.

Referring to fig. 1, 4 and 5, a metal terminal 16 is further disposed in the connection window 7, the metal terminal 16 is electrically connected to the lithium battery body 2, the metal terminal 16 is electrically connected to the plug body 19 through a wire 18, and the wire 18 is wound on the winding roll 15; a battery cell socket 17 is also arranged in the connecting window 7, and the battery cell socket 17 is electrically connected with the circuit board 4; a protective cover 8 is connected outside the connecting window 7; through setting up winding roll 15, make wire 18 convolute on winding roll 15, can not only conveniently collect, simultaneously, can also protect the plug, avoid the plug to expose for a long time outside, receive the damage easily.

The working principle is as follows: firstly, clamping a clamping plate 6 on the back of a circuit board 4 into an inner cavity 5 of a fixed frame 3, then extending a thin rod into a fixed ring, and extruding the thin rod into a fixed pipe 10, so that a connector 12 and an inner pipe 11 move into the fixed pipe 10, further compressing a compression spring 13, when a connecting groove 14 of the clamping plate 6 corresponds to the connector 12, loosening the thin rod, so that the connector 12 and the inner pipe 11 move to one side of the clamping plate 6 under the driving of the elasticity of the compression spring 13, further clamping the connector 12 into the connecting groove 14, achieving the effect of fixing the clamping plate 6, and realizing the effect of installing the circuit board 4; when the plug body 19 is installed, the plug body 19 is connected with one end of the lead 18, the other end of the lead 18 is connected with the metal terminal 16 on the shell 1, therefore, the installation of the plug body 19 is achieved, when the plug body 19 does not need to be used, the lead 18 is wound on the winding roll 15, the lead 18 and the plug body 19 are collected, when the plug body 19 is used, the protective cover 8 is opened, the lead 18 is unfolded, and the plug body 19 is led out for use conveniently.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a mounting structure of lithium cell protection shield and plug, includes casing (1), sets up at inside lithium cell body (2) of casing (1) and circuit board (4) of being connected with lithium cell body (2) electricity, its characterized in that: a fixed frame (3) is fixed on the inner wall of the shell (1), and an inner cavity (5) is arranged in the fixed frame (3); the back of the circuit board (4) is fixed with a clamping plate (6), the clamping plate (6) is clamped into an inner cavity (5) of a fixed frame (3), one side, far away from the lithium battery body (2), of the fixed frame (3) is fixed with a fixed pipe (10), an inner pipe (11) extends into the fixed pipe (10), the inner parts of the inner pipe (11) and the fixed pipe (10) are connected through a compression spring (13), one end, far away from the fixed pipe (10), of the inner pipe (11) is fixed with a connector (12), one side, close to the connector (12), of the clamping plate (6) is provided with a connecting groove (14), and the connector (12) is clamped into the connecting groove (14); one side of the shell (1) is provided with a connecting window (7), and a winding roll (15) and a plug body (19) are arranged in the connecting window (7).

2. The structure of claim 1, wherein: the top end of the inner cavity (5) is arranged in an opening shape, a visible window (9) is arranged on one side of the fixed frame (3), and the visible window (9) is communicated with the inner cavity (5).

3. The structure of claim 1, wherein: the lithium battery plug is characterized in that a metal terminal (16) is further arranged in the connecting window (7), the metal terminal (16) is electrically connected with the lithium battery body (2), the metal terminal (16) is electrically connected with the plug body (19) through a lead (18), and the lead (18) is wound on the winding roll (15).

4. The structure of claim 1, wherein: and a battery cell socket (17) is further arranged in the connecting window (7), and the battery cell socket (17) is electrically connected with the circuit board (4).

5. The structure of claim 1, wherein: and a protective cover (8) is connected outside the connecting window (7).

6. The structure of claim 1, wherein: and a limiting ring is fixed at the bottom end of the connector (12).