CN219457727U

CN219457727U - Protection board connection structure and protection board

Info

Publication number: CN219457727U
Application number: CN202320161364.2U
Authority: CN
Inventors: 杨家敏; 严威; 李润朝
Original assignee: Guangdong Highpower New Energy Technology Co Ltd
Current assignee: Guangdong Highpower New Energy Technology Co Ltd
Priority date: 2023-01-13
Filing date: 2023-01-13
Publication date: 2023-08-01
Anticipated expiration: 2033-01-13

Abstract

The application discloses protection shield connection structure and protection shield relates to lithium cell technical field. The protective plate connecting structure comprises a circuit board for connecting a circuit where the three-terminal fuse is located, and a pin arrangement assembly connected with the circuit board, wherein the pin arrangement assembly comprises a first pin arrangement and a second pin arrangement which are arranged side by side, a short circuit cap can be inserted and arranged on the first pin arrangement and the second pin arrangement, and the first pin arrangement and the second pin arrangement are connected or disconnected through the short circuit cap so that the circuit where the three-terminal fuse is located is synchronously connected or disconnected. By adopting the above form, the connection form of soldering tin can be avoided, so that the safety in use is improved.

Description

Protection board connection structure and protection board

Technical Field

The application relates to the technical field of lithium batteries, in particular to a protection plate connecting structure and a protection plate.

Background

With the development of new energy battery industry, related safety accidents of lithium ion batteries occur sometimes, which causes certain personal injury or property loss. The safety problem of lithium ion batteries is receiving more and more attention.

In the daily use process, the cause of the fire and explosion of the lithium battery may be that the protection circuit is invalid due to improper circuit parameter design or component faults, and based on the above factors, the part of safety standard for the lithium battery definitely requires that the fire and explosion of the lithium battery are not allowed to occur under the condition of primary protection failure. Therefore, in order to make the use of the lithium battery safer, a secondary passive component protection (three-terminal controllable fuse) is added on the basis of the primary protection circuit. However, the three-terminal controllable fuse action is disposable and not recoverable. Therefore, a physical breakpoint is required to be designed at the control end, the breakpoint is disconnected and disconnected before the battery is assembled, and the breakpoint is connected after the battery is assembled so as to ensure the subsequent normal use.

At present, a soldering tin connection mode is generally adopted for connecting physical break points, the mode needs to be manually used for soldering by using an electric soldering iron, and soldering tin easily causes tin slag, so that poor appearance and potential safety hazards are caused.

Disclosure of Invention

An object of the present application is to provide a protection shield connection structure and protection shield, can avoid adopting the connected form of soldering tin to the security when promoting the use.

Embodiments of the present application are implemented as follows:

in one aspect of the embodiment of the application, a protection board connection structure is provided, including the circuit board that is used for connecting three terminal fuse place circuit, and with the row needle subassembly that the circuit board is connected, the row needle subassembly is including the first row needle and the second row needle that set up side by side, first row needle with can peg graft on the second row needle and be provided with the short circuit cap, first row needle with the second row needle passes through the short circuit cap switches on or breaks off, so that three terminal fuse place circuit synchronous switch on or breaks off.

Optionally, the first pins and the second pins are respectively arranged in two, and the short-circuit caps are correspondingly arranged in two, so that the first pins and the second pins are correspondingly conducted one by one.

Optionally, the circuit board is further provided with a plurality of bonding pads, and the first pins and the second pins are connected with the circuit board through the bonding pads respectively.

Optionally, the pin header assembly further includes an insulator disposed on the first pin header and the second pin header such that the first pin header and the second pin header are fixedly connected with respect to the insulator.

Optionally, the first pin header includes interconnect's first extension section and first bending section, the second pin header includes interconnect's second extension section and second bending section, first bending section with the second bending section respectively with the pad one-to-one laminating, the insulating part sets up first extension section with on the second extension section.

Optionally, the outer ring of the bonding pad is provided with H-shaped silk screen printing.

Optionally, the short circuit cap includes a cover body, and a conductive spring piece disposed in the cover body, where the conductive spring piece is used to connect the first pin header and the second pin header.

Optionally, the conductive elastic sheet includes a first supporting piece and a second supporting piece which are oppositely arranged, and a wedge-shaped space is formed between the first supporting piece and the second supporting piece.

Optionally, a protective cover detachably connected with the first row of pins and the second row of pins is further arranged on the first row of pins and the second row of pins.

In another aspect of the embodiments of the present application, there is provided a protection plate, including the protection plate connection mechanism as set forth in any one of the above.

The beneficial effects of the embodiment of the application include:

according to the protective plate connecting structure and the protective plate, the pin arrangement assembly connected with the circuit board is used, the first pin arrangement and the second pin arrangement of the pin arrangement assembly form required breakpoints, the circuit where the three-terminal fuse is located is required to be communicated, and the short circuit cap is only required to be inserted into the first pin arrangement and the second pin arrangement, so that the first pin arrangement and the second pin arrangement are communicated. By adopting the arrangement mode, when the break points are connected in the later stage, the two break points are conducted without adopting the solder, so that poor appearance and potential safety hazard caused by solder slag generated by solder are avoided, and the safety during use is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered limiting the scope, and that other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is one of schematic structural diagrams of a connection structure of a protection board according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of a pin header assembly according to an embodiment of the present disclosure;

FIG. 3 is a second schematic structural view of a connection structure of a protection board according to an embodiment of the present disclosure;

fig. 4 is a schematic diagram of a relative positional relationship between a pad and H-shaped screen printing according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of a shorting cap according to an embodiment of the present application.

Icon: 100-a protective plate connection structure; 110-a circuit board; 112-bonding pads; 114-H-shaped silk screen printing; 120-pin header assembly; 122-first row of pins; 1222-a first extension; 1224-a first bending section; 124-second row of pins; 1242-a second extension; 1244-a second bending section; 126-insulating member; 130-a shorting cap; 132-cover; 134-conductive spring pieces; 1342-a first abutment tab; 1344-second abutment tab.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, which are generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, as provided in the accompanying drawings, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

In the description of the present application, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

In order to make the use of the lithium battery safer, a secondary passive component protection (three-terminal controllable fuse) is added on the basis of a primary protection circuit. However, the three-terminal controllable fuse action is disposable and not recoverable. Therefore, a physical breakpoint is required to be designed at the control end, the breakpoint is disconnected and disconnected before the battery is assembled, and the breakpoint is connected after the battery is assembled so as to ensure the subsequent normal use. When the physical break points are connected at the later stage, a soldering tin connection mode is generally adopted, the mode needs to be manually used for soldering by using an electric soldering iron, and soldering tin easily causes tin slag, so that poor appearance and potential safety hazards are caused. In order to solve the above problems, the embodiments of the present application provide the following technical solutions to overcome the above problems.

Referring to fig. 1 and 2, the present embodiment provides a protection board connection structure 100, which includes a circuit board 110 for connecting a circuit where a three-terminal fuse is located, and a pin assembly 120 connected to the circuit board 110, wherein the pin assembly 120 includes a first pin 122 and a second pin 124 arranged side by side, a shorting cap 130 is pluggable on the first pin 122 and the second pin 124, and the first pin 122 and the second pin 124 are turned on or off through the shorting cap 130, so that the circuit where the three-terminal fuse is located is synchronously turned on or off.

Specifically, the circuit board 110 for connecting the circuit where the three-terminal fuse is located is used for conveniently supporting the circuit board 110 by the three-terminal fuse to form a required control circuit. When the desired breakpoint is set, two breakpoints are provided by the first and second pins 122, 124. When the break point is required to be switched on later, the short-circuit caps 130 are plugged onto the first pins 122 and the second pins 124. By providing the shorting cap 130, the first pin 122 and the second pin 124 are conveniently connected or disconnected, so that the circuit in which the three-terminal fuse is located can be connected or disconnected as required by matching the first pin 122, the second pin 124 and the shorting cap 130.

According to the protective plate connecting structure 100 provided by the embodiment of the application, the pin arrangement assembly 120 connected with the circuit board 110 is used, the first pin arrangement 122 and the second pin arrangement 124 of the pin arrangement assembly 120 form a required breakpoint, and when the circuit of the three-terminal fuse is required to be communicated, the short circuit cap 130 is only required to be inserted into the first pin arrangement 122 and the second pin arrangement 124 so as to conduct the first pin arrangement 122 and the second pin arrangement 124. By adopting the arrangement mode, when the break points are connected in the later stage, the two break points are conducted without adopting the solder, so that poor appearance and potential safety hazard caused by solder slag generated by solder are avoided, and the safety during use is improved.

As shown in fig. 2 and 3, the first and second pins 122 and 124 are respectively provided in two, and the shorting caps 130 are correspondingly provided in two, so that the first and second pins 122 and 124 are conducted in one-to-one correspondence.

Specifically, when the shorting caps 130 are inserted into the first pins 122 and the second pins 124, each shorting cap 130 connects a corresponding group of the first pins 122 and the second pins 124, so as to achieve the purpose of conducting a circuit from a disconnection point.

As shown in fig. 3, the circuit board 110 is further provided with a plurality of pads 112, and the first pins 122 and the second pins 124 are connected to the circuit board 110 through the pads 112, respectively.

Specifically, when the first pins 122 and the second pins 124 are connected to the pads 112, a desired connection relationship can be achieved through a mounting process.

As shown in fig. 2, the pin header assembly 120 further includes an insulator 126 disposed over the first pin header 122 and the second pin header 124 such that the first pin header 122 and the second pin header 124 are fixedly coupled with respect to the insulator 126.

Specifically, the insulating member 126 may be made of plastic, so that stability of a relative positional relationship between the first pin 122 and the second pin 124 is improved on the premise of effectively reducing cost, and meanwhile, structural strength of the first pin 122 and the second pin 124 can be improved, so that probability of stress bending of the first pin 122 and the second pin 124 is reduced.

With continued reference to fig. 2, the first pins 122 include a first extension section 1222 and a first bending section 1224 that are connected to each other, the second pins 124 include a second extension section 1242 and a second bending section 1244 that are connected to each other, the first bending section 1224 and the second bending section 1244 are respectively attached to the pads 112 in a one-to-one correspondence, and the insulating member 126 is disposed on the first extension section 1222 and the second extension section 1242.

Specifically, an included angle of 90 ° is formed between the first extension section 1222 and the first bending section 1224, and after the first bending section is guaranteed to be connected to the pad 112 as a patch pin, the first extension section 1222 is perpendicular to the circuit board 110, so as to facilitate insertion of the shorting cap 130. Similarly, an included angle of 90 ° is formed between the second extension section 1242 and the second bending section 1244, so that after the second bending section is ensured to be connected to the pad 112 as a patch pin, the second extension section 1242 is perpendicular to the circuit board 110, which facilitates the insertion of the shorting cap 130.

As shown in fig. 4, the outer ring of the pad 112 is provided with an H-shaped screen 114.

In the above-described manner, when the shorting cap 130 is connected to the pin header assembly 120, the H-shaped screen 114 can indicate the direction of insertion for the shorting cap 130, thereby avoiding connection errors.

In an alternative embodiment of the present application, the shorting cap 130 includes a cover 132, and a conductive dome 134 disposed within the cover 132, the conductive dome 134 being configured to connect the first pin header 122 and the second pin header 124.

Specifically, the conductive sheet may be provided in one piece or two pieces, as long as the first pin 122 and the second pin 124 can be stably connected.

As shown in fig. 5, in an alternative embodiment of the present application, the conductive spring 134 includes a first abutting piece 1342 and a second abutting piece 1344 that are disposed opposite to each other, and a wedge-shaped space is formed between the first abutting piece 1342 and the second abutting piece 1344.

With the above arrangement, when the shorting cap 130 is mated with the pin header assembly 120, the first pin header 122 and the second pin header 124 are conveniently inserted, and the contact position can be made more compact, so as to improve the stability of electrical connection.

In an alternative embodiment of the present application, the first row of pins 122 and the second row of pins 124 are further provided with a detachably connected protective cover.

In this way, the break point between the first pin 122 and the second pin 124 is required to be ensured, so that the protection cover can play a role in protecting, so that accidental conduction of the first pin 122 and the second pin 124 is avoided, and reliability in the production process is ensured.

The present embodiment also discloses a protection plate, including the protection plate connection structure 100 in the foregoing embodiment. The protection plate includes the same structure and advantageous effects as the protection plate coupling structure 100 of the previous embodiment. The structure and advantageous effects of the protection plate coupling structure 100 have been described in detail in the foregoing embodiments, and are not described herein.

The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the same, but rather, various modifications and variations may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. The utility model provides a protection shield connection structure, its characterized in that, including the circuit board that is used for connecting the circuit at three terminal fuse place, and with the needle subassembly is arranged in the row that the circuit board is connected, needle subassembly is arranged including first row needle and the second row needle that sets up side by side, first row needle with can peg graft on the second row needle and be provided with the short circuit cap, first row needle with the second row needle passes through the short circuit cap switches on or breaks off, so that three terminal fuse place circuit synchronous switch on or break off.

2. The connection structure of the protection plate according to claim 1, wherein the first and second pins are respectively provided in two, and the shorting caps are correspondingly provided in two, so that the first and second pins are conducted in one-to-one correspondence.

3. The protective plate connecting structure according to claim 1, wherein a plurality of pads are further provided on the circuit board, and the first pin header and the second pin header are connected to the circuit board through the pads, respectively.

4. A protective plate connecting structure as defined in claim 3, wherein said pin header assembly further comprises an insulator provided on said first pin header and said second pin header such that said first pin header and said second pin header are fixedly connected with respect to said insulator.

5. The connection structure of protection plates according to claim 4, wherein the first pins include a first extension section and a first bending section connected to each other, the second pins include a second extension section and a second bending section connected to each other, the first bending section and the second bending section are respectively attached to the bonding pads in one-to-one correspondence, and the insulating member is disposed on the first extension section and the second extension section.

6. The protective plate connecting structure according to any one of claims 3 to 5, wherein the pad outer ring is provided with H-shaped silk screen.

7. The protective plate connecting structure according to any one of claims 1 to 5, wherein the shorting cap includes a cover body, and a conductive elastic piece provided in the cover body, the conductive elastic piece being for connecting the first pin array and the second pin array.

8. The protective plate connecting structure according to claim 7, wherein the conductive elastic sheet comprises a first abutting sheet and a second abutting sheet which are oppositely arranged, and a wedge-shaped space is formed between the first abutting sheet and the second abutting sheet.

9. The protective plate coupling structure according to any one of claims 1 to 5, wherein the first row of pins and the second row of pins are further provided with a detachably coupled protective cover.

10. A protective plate comprising the protective plate connecting structure according to any one of claims 1 to 9.