CN213989123U

CN213989123U - Flexible package battery cell with series-parallel connection reverse connection prevention switching device

Info

Publication number: CN213989123U
Application number: CN202022982755.XU
Authority: CN
Inventors: 俞桂仁
Original assignee: Daqin New Energy Technology Taizhou Co ltd
Current assignee: Daqin New Energy Technology Taizhou Co ltd
Priority date: 2020-12-09
Filing date: 2020-12-09
Publication date: 2021-08-17
Anticipated expiration: 2030-12-09

Abstract

The utility model discloses a take series-parallel connection to prevent reverse-connection switching device's flexible package electricity core, including plastic-aluminum membrane electricity core and PCB board, be provided with arcuate connection piece on the plastic-aluminum membrane electricity core, the connection piece with plastic-aluminum membrane electricity core body coupling, be provided with anodal utmost point ear and negative pole utmost point ear on the connection piece, anodal utmost point ear with negative pole utmost point ear respectively with the inside positive negative pole electric connection of plastic-aluminum membrane electricity core, U type recess has been seted up on the negative pole utmost point ear, the PCB board is installed the upper portion of connection piece and with anodal utmost point ear with negative pole utmost point ear electric connection. The beneficial effects of the utility model are that, can effectively promote the security in the domestic energy storage battery production process, insert on the PCB board through the sectional type structure with electric core negative pole end design U type structure, can avoid positive negative pole to turn over to wear, thoroughly solve the danger that manual operation leads to, and simple easy discernment, this kind of connected mode can save mixed and disorderly wire moreover, saves installation space.

Description

Flexible package battery cell with series-parallel connection reverse connection prevention switching device

Technical Field

The utility model relates to a flexible-package battery technical field, especially a take series-parallel connection to prevent reverse-connection switching device's flexible-package electricity core.

Background

When the flexible package battery is assembled, the positive and negative electrodes of each battery cell and the positive and negative electrodes of the circuit on the PCB are connected in series-parallel, the existing method is to connect through wires, and the wires needed by the connection method are more, so that the situation of disorder of wires may occur, and it is more troublesome to arrange so many wires in a limited space, if the wires are damaged and leak electricity, an electric shock may damage the circuit on the PCB, if the wires are short-circuited, the PCB may be damaged, if the wires are installed in some electrical equipment, the situations of fire, explosion and the like may occur, so that great potential safety hazards exist, and therefore, the connection and switching method is not compensated in terms of safety and cost, and needs to be improved.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problems, the flexible package electric core with the series-parallel connection reverse connection prevention switching device is designed.

Realize above-mentioned purpose the technical scheme of the utility model be, a take series-parallel connection to prevent reverse-connection switching device's flexible package electricity core, including plastic-aluminum membrane electricity core and PCB board, be provided with arcuate connection piece on the plastic-aluminum membrane electricity core, the connection piece with plastic-aluminum membrane electricity core body coupling, be provided with anodal utmost point ear and negative pole utmost point ear on the connection piece, anodal utmost point ear with negative pole utmost point ear respectively with the inside positive negative pole electric connection of plastic-aluminum membrane electricity core, the U type recess has been seted up on the negative pole utmost point ear, the PCB board is installed the upper portion of connection piece and with anodal utmost point ear with negative pole utmost point ear electric connection.

Preferably, the connecting piece is further provided with tab glue, and the tab glue is respectively wrapped at the bottoms of the positive electrode tab and the negative electrode tab.

Preferably, anodal ear hole and the anodal ear hole of negative pole have been seted up on the PCB board, respectively with anodal utmost point ear with negative pole utmost point ear looks adaptation, anodal ear hole with the downthehole contact that is provided with of negative pole utmost point ear, anodal utmost point ear with negative pole utmost point ear passes anodal ear hole and negative pole ear hole respectively with contact electric connection.

Preferably, there are two negative pole ear holes, and the distance between two negative pole ear holes is the same as the width of the U-shaped groove on the negative pole tab.

Preferably, the aluminum-plastic film battery cores are arranged in a plurality of rows and are stacked at the bottom of the PCB in parallel, and are electrically connected with the PCB in series-parallel.

The battery cell has the advantages that the positive electrode lug and the negative electrode lug on the battery cell penetrate through the hole in the PCB and are connected with a circuit on the PCB through the contact in the hole, the U-shaped groove of the negative electrode lug can be designed to be used for distinguishing the positive electrode and the negative electrode of the battery cell, the assembly of personnel is facilitated, the situation that the battery cell is short-circuited due to the fact that the positive electrode and the negative electrode are reversely arranged when the personnel operate the battery cell and the PCB are scrapped and the safety of personnel and equipment is affected is avoided, the connection mode is simpler, complex wires are not needed, the installation space can be effectively saved, the fool-proof treatment can be realized in the stacking and assembling process, the situation of assembling errors is avoided, a certain gap can exist between the battery cell and the battery cell due to the design of the connecting sheet on the battery cell, and the heat dissipation is facilitated.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic structural diagram of an aluminum-plastic film battery cell according to the present invention;

FIG. 3 is an enlarged schematic view of the structure at A in FIG. 2;

fig. 4 is a schematic structural diagram of the PCB board of the present invention.

In the figure, 1, an aluminum-plastic film battery cell; 2. a PCB board; 21. a positive electrode ear hole; 22. a negative pole ear hole; 3. Connecting sheets; 4. a positive electrode tab; 5. a negative electrode tab; 6. and (5) gluing the tab.

Detailed Description

First explain the utility model discloses a design original intention, the utility model discloses mainly solve the security problem, through adopting the wire with the positive negative pole of electric core and the circuit connection on the PCB board when electric core and PCB board equipment, nevertheless the wire if the damaged condition that can take place the short circuit to lead to the PCB board to damage, there is very big potential safety hazard, the utility model discloses a take the series-parallel flexible package electricity core of preventing switching device that connects reversely based on this design.

The following detailed description of the present invention is provided with reference to the accompanying drawings, as shown in fig. 1-4, the reverse connection preventing device includes a PCB board 2 and a plurality of aluminum-plastic film cells 1, wherein each aluminum-plastic film cell 1 is provided with an arched connecting sheet 3, the connecting sheet 3 is integrally connected with the aluminum-plastic film cell 1, the purpose of the connecting sheet 3 is to facilitate the installation of the PCB board 2, and to facilitate the heat dissipation of the cell and the PCB board 2 due to a certain gap existing when the plurality of aluminum-plastic film cells 1 are stacked together; the connecting sheet 3 is also provided with an anode tab 4 and a cathode tab 5, the cathode tab 5 is provided with a U-shaped groove for distinguishing the anode and the cathode of the battery cell, the groove can be designed into a U shape, such as a concave shape and a convex shape, the PCB 2 is provided with an anode tab hole 21 and a cathode tab hole 22, the two tab holes are respectively matched with the anode tab 4 and the cathode tab 5, wherein the number of the cathode tab holes 22 is two, and the distance between the two cathode tab holes 22 is consistent with the width of the U-shaped groove on the cathode tab 5, so that the design is aimed at facilitating the interpenetration and fixation of the cathode tab 5; in order to facilitate the circuit on the PCB board 2 to be electrically connected with the anode tab 4 and the cathode tab 5, contacts are arranged in the anode tab hole 21 and the cathode tab hole 22, the anode tab 4 and the cathode tab 5 respectively penetrate the anode tab hole 21 and the cathode tab hole 22 and are electrically connected with the contacts, the connection mode is convenient for assembly on a production line, the anode and the cathode of the battery cell are assembled on the PCB board 2 in a mistake manner, short circuit damage of the PCB board 2 is caused, safety during assembly is improved, mixed and disorderly wires are omitted, and installation space is saved.

In order to prevent the PCB board 2 direct contact connection piece 3 on the plastic-aluminum membrane electricity core 1, still be provided with utmost point ear gum 6 on connection piece 3, utmost point ear gum 6 wraps up in anodal utmost point ear 4 and negative pole utmost point ear 5's bottom respectively, play insulating effect, the position according to anodal ear hole 21 and the negative pole ear hole 22 on the PCB board 2 during the equipment distributes, every electric core superposes together side by side, install in the bottom of PCB board 2, and with 2 series-parallel electric connection of PCB board, the packaging efficiency of production line can effectively be improved, promote the fault-tolerant rate of equipment, avoid installing the positive negative pole of electric core and the positive negative pole on the PCB board 2 reversely, the radiating effect of overall structure has also been promoted.

Above-mentioned technical scheme has only embodied the utility model discloses technical scheme's preferred technical scheme, some changes that this technical field's technical personnel probably made to some parts wherein have all embodied the utility model discloses a principle belongs to within the protection scope of the utility model.

Claims

1. The utility model provides a take flexible package electric core of anti-switching device that connects conversely of series-parallel, includes plastic-aluminum membrane electricity core (1) and PCB board (2), its characterized in that, be provided with arcuate connection piece (3) on plastic-aluminum membrane electricity core (1), connection piece (3) with plastic-aluminum membrane electricity core (1) body coupling, be provided with anodal utmost point ear (4) and negative pole utmost point ear (5) on connection piece (3), anodal utmost point ear (4) with negative pole utmost point ear (5) respectively with the inside positive negative pole electric connection of plastic-aluminum membrane electricity core (1), the U type recess has been seted up on negative pole utmost point ear (5), install PCB board (2) the upper portion of connection piece (3) and with anodal utmost point ear (4) with negative pole utmost point ear (5) electric connection.

2. The flexible package battery cell with the series-parallel connection anti-reverse connection switching device according to claim 1, wherein a tab adhesive (6) is further arranged on the connecting sheet (3), and the tab adhesive (6) is respectively wrapped at the bottoms of the positive electrode tab (4) and the negative electrode tab (5).

3. The flexible package battery cell with the series-parallel connection anti-reverse connection switching device according to claim 1, wherein a positive electrode ear hole (21) and a negative electrode ear hole (22) are formed in the PCB (2) and are respectively matched with the positive electrode tab (4) and the negative electrode tab (5), contacts are arranged in the positive electrode ear hole (21) and the negative electrode ear hole (22), and the positive electrode tab (4) and the negative electrode tab (5) respectively penetrate through the positive electrode ear hole (21) and the negative electrode ear hole (22) and are electrically connected with the contacts.

4. The flexible package battery cell with the series-parallel connection anti-reverse connection switching device according to claim 3, wherein there are two negative electrode tab holes (22), and a distance between the two negative electrode tab holes (22) is consistent with a width of a U-shaped groove on the negative electrode tab (5).

5. The flexible package battery cell with the series-parallel connection anti-reverse connection switching device according to claim 1, wherein a plurality of aluminum-plastic film battery cells (1) are stacked side by side at the bottom of the PCB (2) and electrically connected with the PCB (2) in series-parallel connection.