CN216698653U

CN216698653U - Reliable same-string and parallel battery cell connecting structure

Info

Publication number: CN216698653U
Application number: CN202122918132.0U
Authority: CN
Inventors: 王博文; 张计中; 董泽海
Original assignee: Fujian Scud Power Technology Co Ltd
Current assignee: Fujian Scud Power Technology Co Ltd
Priority date: 2021-11-25
Filing date: 2021-11-25
Publication date: 2022-06-07
Anticipated expiration: 2031-11-25

Abstract

The utility model relates to a reliable same-string connection structure for each parallel battery cell, which comprises at least two modules, wherein each module comprises a battery module support, a plurality of battery cells and a connecting sheet for connecting the plurality of battery cells, an injection-molded copper nut is arranged on the battery module support, taps extending to the surface of the injection-molded copper nut are arranged on the connecting sheet, the tap at the inner side of one module is in contact and overlapped with the tap at the inner side of the other module, the tap at the outer side of one module is connected with the tap at the outer side of the other module through a terminal wire harness, an inner locking part sequentially penetrating through the two taps and extending into the injection-molded copper nut is arranged outside the tap at the inner side, and an outer locking part sequentially penetrating through the terminal wire harness and extending into the injection-molded copper nut is arranged outside the terminal wire harness. The device is simple in structure, reasonable in design, simple and safe in assembly, strong in reliability, capable of solving the problems of high difficulty in process operation and high material cost and improving the production efficiency.

Description

Reliable same-string and parallel battery cell connecting structure

Technical Field

The utility model relates to a reliable connection structure of parallel cells in the same string.

Background

The current battery pack is limited in space, so as to achieve the required capacity and other requirements; many times need establish ties two identical modules, nevertheless can meet two superimposed situations of module because the problem in space, if directly prolong the connection piece then can cause the increase of the equipment degree of difficulty and the increase of battery package cost at superimposed in-process to need to carry out welding treatment and increased the degree of difficulty of assembly process and can not guarantee its reliability simultaneously.

SUMMERY OF THE UTILITY MODEL

The utility model improves the problems, namely the utility model aims to provide a reliable connection structure for all parallel cells in the same string, and the connection structure is convenient and reliable to assemble.

The utility model is formed in this way, it includes at least two die sets, each die set includes the battery die set support, multiple electric cores and connecting sheet used for connecting multiple electric cores, there are injection copper nuts on the said battery die set support, there are taps extending to the surface of injection copper nut on the said connecting sheet, wherein the tap of the inboard of a die set contacts and overlaps with the tap of the inboard of another die set, connect through the terminal wire harness between tap of the outboard of a die set and tap of the outboard of another die set among them, locate at inboard tap outside have run through two tap extend to injection copper nut internal lock pay one, the terminal wire harness exterior has run through terminal wire harness sequentially, tap extend to the external lock that injects copper nut into.

Further, the outer locking part and the inner locking part are both screws.

Further, each tap has a mounting hole therein.

Further, the terminal harness includes a harness and terminal plates on both sides of the harness, the terminal plates having openings therein.

Furthermore, a wire harness groove is formed in the front of the battery module support.

Furthermore, a positioning groove is formed in the front of the battery module support.

Compared with the prior art, the utility model has the following beneficial effects: the device is simple in structure and reasonable in design, and the two connecting sheets in the battery module bracket connect a plurality of battery cores in parallel; the same-string and far-away battery cores in the adjacent modules are connected with connecting sheets outside the two modules through terminal wiring harnesses and locked by adopting an outer locking piece; the inboard tap of one of them module overlaps with the inboard tap of another module with the nearer electric core of cluster in the adjacent module, then adopts the internal locking to pay a part and lock. The device has simple and safe assembly process, improves the production efficiency of the process, improves the reliability of the assembled battery module, and reduces the material cost of the battery module.

Drawings

FIG. 1 is a first perspective view of an embodiment of the present invention;

FIG. 2 is a perspective view of a second embodiment of the present invention;

FIG. 3 is a partial schematic structural diagram of an embodiment of the present invention;

fig. 4 is a partial enlarged view of a portion a in fig. 3;

fig. 5 is a first structural diagram of a battery cell, a connecting sheet and a terminal harness according to an embodiment of the utility model;

fig. 6 is a schematic structural diagram of a cell and a connecting sheet according to an embodiment of the utility model;

FIG. 7 is a schematic view of a terminal harness structure according to an embodiment of the present invention;

in the figure: 1-module, 11-battery module support, 12-battery core, 13-connecting piece, 2-injection-molded copper nut, 3-tap, 31-mounting hole, 4-internal locking part, 5-external locking part, 6-terminal wire harness, 61-wire harness, 62-terminal board, 63-opening hole, 7-wire harness groove and 8-positioning groove.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Example (b): as shown in fig. 1 to 7, in the present embodiment, a reliable connection structure of parallel cells in the same string is provided, which includes two modules 1, each module includes a battery module support 11, a plurality of cells 12, and two connection sheets 13 located at two ends of the cells and used for connecting the cells in parallel, an injection-molded copper nut 2 is disposed on the battery module support, taps 3 extending to the surface of the injection-molded copper nut are disposed on the connection sheets, a tap inside one module overlaps with a tap inside the other module in a contact manner, a tap outside one module is connected to a tap outside the other module through a terminal harness 6, an internal locking member 4 sequentially penetrating through the two taps and extending into the injection-molded copper nut is disposed outside the tap inside the other module, and an external locking member 5 sequentially penetrating through the terminal harness and extending into the injection-molded copper nut is disposed outside the terminal harness.

The terminal harness described above is a harness with an OT terminal.

The angle between the tap and the connecting sheet is 90 degrees.

The outer locking part and the inner locking part are both screws.

The mounting holes of the taps positioned on the outer side of the module, the hole positions of the injection-molded copper nuts and the holes of the terminal board are aligned, and the mounting holes of the two taps positioned on the inner side of the module and the hole positions of the injection-molded copper nuts are aligned.

In this embodiment, each tap has a mounting hole 31 therein.

In the present embodiment, the terminal harness 6 includes a harness 61 and terminal blocks 62 having openings 63 on both sides of the harness.

In this embodiment, in order to conveniently limit the terminal harness, the front of the battery module bracket is provided with a harness slot 7.

In this embodiment, the front of the battery module bracket is provided with a positioning groove 8 for limiting the tap.

In this embodiment, battery module support both sides are provided with the electric core hole, and the connection piece setting is outside in battery module support both sides, and electric core passes through electric core hole and connection piece contact.

In this embodiment, during installation, a plurality of battery cells are connected in parallel through two connecting sheets in the battery module bracket; embedding injection molding copper nuts at the front balance position of the battery module bracket; the connecting sheet extends out of a tap at the position of the injection copper nut, and the tap is provided with a hole so as to lock and fix a screw conveniently; connecting sheets outside the two modules are connected through terminal wiring harnesses and locked by an outer locking piece; with the nearer electric core of cluster, the inboard tap of one of them module overlaps with the inboard tap of another module, then adopts interior locking to pay a part and lock.

Any embodiment disclosed herein above is meant to disclose, unless otherwise indicated, all numerical ranges disclosed as being preferred, and any person skilled in the art would understand that: the preferred ranges are merely those values which are obvious or representative of the technical effect which can be achieved. Since the numerical values are too numerous to be exhaustive, some of the numerical values are disclosed in the present invention to illustrate the technical solutions of the present invention, and the above-mentioned numerical values should not be construed as limiting the scope of the present invention.

If the terms "first," "second," etc. are used herein to define parts, those skilled in the art will recognize that: the terms "first" and "second" are used merely to distinguish one element from another in a descriptive sense and are not intended to have a special meaning unless otherwise stated.

Meanwhile, if the utility model as described above discloses or relates to parts or structural members fixedly connected to each other, the fixedly connected parts can be understood as follows, unless otherwise stated: a detachable fixed connection (for example using bolts or screws) is also understood as: non-detachable fixed connections (e.g. riveting, welding), but of course, fixed connections to each other may also be replaced by one-piece structures (e.g. manufactured integrally using a casting process) (unless it is obviously impossible to use an integral forming process).

In addition, terms used in any technical solutions disclosed in the present invention to indicate positional relationships or shapes include approximate, similar or approximate states or shapes unless otherwise stated.

Any part provided by the utility model can be assembled by a plurality of independent components or can be manufactured by an integral forming process.

Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present invention and not to limit the same; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the utility model or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the utility model as defined by the appended claims.

Claims

1. The utility model provides a reliable with each electric core connection structure that parallels of cluster, its characterized in that includes two at least modules, every module includes battery module support, a plurality of electric core and is used for the connection piece of connecting a plurality of electric cores, be provided with the copper nut of moulding plastics on the battery module support, be provided with on the connection piece and extend to the taking a percentage on the copper nut surface of moulding plastics, wherein take a percentage of a module inboard and another module inboard take a percentage the contact overlap, wherein take a percentage in the module outside and another module outside take a percentage between be connected through the terminal pencil, the outside of taking a percentage that is located inboard is equipped with and runs through two in proper order and take a percentage and extend to the interior lock of the copper nut of moulding plastics and pay the piece, terminal pencil outside is equipped with and runs through the terminal pencil in proper order, takes a percentage and extends to the interior lock of the copper nut of moulding plastics and pay the piece.

2. The structure of claim 1, wherein the external locking member and the internal locking member are screws.

3. The reliable same-string and parallel-cell connection structure of claim 1, wherein each tap has a mounting hole.

4. The structure of claim 1, wherein the terminal harness includes a wire harness and terminal boards on both sides of the wire harness, and the terminal boards have openings.

5. The reliable same-string and parallel-cell connection structure according to claim 1, wherein a cable slot is formed in front of the battery module support.

6. The reliable same-string and parallel-cell connecting structure according to claim 1, wherein a positioning groove is formed in the front of the battery module support.