CN219917497U

CN219917497U - Integrated busbar

Info

Publication number: CN219917497U
Application number: CN202320967083.6U
Authority: CN
Inventors: 袁宽; 杨溥明; 严若红; 邹宗翰
Original assignee: Dongguan Guixiang Insulation Material Co Ltd
Current assignee: Dongguan Guixiang Insulation Material Co Ltd
Priority date: 2023-04-25
Filing date: 2023-04-25
Publication date: 2023-10-27
Anticipated expiration: 2033-04-25

Abstract

The utility model relates to the technical field of new energy power batteries, in particular to an integrated busbar, which comprises a main body, a plurality of busbars and a plurality of electric elements; the main body comprises a plurality of PCB boards which are arranged in a stacked manner; the plurality of bus bars and the plurality of electrical elements are respectively fixedly connected with the main body; one side of the main body is provided with a plurality of first grooves for accommodating the bus bars, and the other side of the main body is provided with a plurality of second grooves for accommodating the electric elements. The utility model aims to provide an integrated busbar, which solves the problems of high processing difficulty, high production cost, poor stability and short service life of the existing busbar.

Description

Integrated busbar

Technical Field

The utility model relates to the technical field of new energy power batteries, in particular to an integrated busbar.

Background

In the prior art, the voltage and temperature signals of the new energy power battery module are collected, and a low-voltage wire harness or an integrated busbar mode is mostly adopted. When the low-voltage wire harness or the integrated bus bar mode is adopted, the connection mode of the low-voltage wire harness or the flexible circuit board and the bus bar is realized through the welding mode of the terminal and the bus bar. The existing integrated bus bars are all required to be connected with the bus bars by using a bracket so as to enable the bracket to fix the bus bars, and patent number CN202123438022.0 discloses a soft-package battery module which comprises a plurality of soft-package batteries, a bracket and a bus bar assembly which are arranged side by side; a flaky electrode terminal is led out of the end part of the soft package battery, and comprises a flaky positive electrode terminal and a flaky negative electrode terminal; the support is arranged at one side of the end part of the soft package battery; the busbar assembly comprises an insulating main body and a plurality of electrode connection rows which are arranged on the insulating main body and are used for realizing series connection or parallel connection of the soft package batteries; the support is provided with a plurality of terminal through holes and a plurality of terminal accommodating grooves, all the sheet electrode terminals penetrate through the terminal through holes and are bent and then are arranged in the terminal accommodating grooves, the support is arranged on the insulating main body, the electrode connecting rows extend into the terminal accommodating grooves, all the sheet electrode terminals are connected with the electrode connecting rows in a one-time welding manner, and a plurality of the soft package batteries are connected in series or in parallel; although this soft packet of battery module can be with a plurality of soft packet of batteries series connection or parallelly connected on the support through once heating back support to simplified the assembly step of this soft packet of battery module, reduced the manufacturing cost of this soft packet of battery module, but this soft packet of battery module is firstly with the busbar through the support on the soft packet of battery, make the busbar pass through sheet electrode terminal and leg joint again, because support and busbar are split type setting, the electrical component that all need be connected through connecting terminal on busbar and support, the in-process of connecting at both is complicated, cause the problem that the cost of manufacture is high easily, simultaneously because connecting terminal's connection stability is poor, still cause the busbar to take place the risk that drops on the support easily, lead to the problem of product life decline. Thus, the drawbacks are quite apparent and there is a need to provide a solution.

Disclosure of Invention

The utility model aims to provide an integrated busbar, which adopts the technical scheme provided by the utility model to solve the problems that the busbar is firstly arranged on a soft-pack battery through a bracket, then the busbar is connected with the bracket through a sheet electrode terminal, the bracket and the busbar are arranged in a split mode, the busbar and the bracket or electric elements on the busbar and the bracket are connected through connecting terminals, the process is complex in the connecting process of the busbar and the bracket, the manufacturing cost of a product is easy to cause, and meanwhile, the connecting stability of the connecting terminals is poor, the risk that the busbar falls off on the bracket is easy to cause, and the service life of the product is reduced.

In order to achieve the technical purpose, the utility model provides an integrated busbar, which comprises a main body, a plurality of busbars and a plurality of electric elements; the main body comprises a plurality of PCB boards which are arranged in a stacked manner; the plurality of bus bars and the plurality of electrical elements are respectively fixedly connected with the main body; one side of the main body is provided with a plurality of first grooves for accommodating the bus bars, and the other side of the main body is provided with a plurality of second grooves for accommodating the electric elements.

Preferably, polypropylene sheets are used for hot press curing molding between two adjacent PCB boards.

Preferably, the electrical element comprises an NTC thermistor.

Preferably, the busbar and the main body are respectively provided with a plurality of mutually aligned mounting grooves in a penetrating way.

Preferably, the main body is provided with a plurality of connectors respectively connected with one of the PCB boards.

Preferably, each of the second grooves is aligned with any one of the first grooves, respectively.

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

1. the bus bar and the electric element are respectively fixed on the main body, so that the main body replaces the bracket to fix the bus bar and the electric element, the use of the bracket is saved, the cost is saved, the integrated bus bar is compact in structure, the stability of connection of the bus bar and the electric element on the main body is improved, and the service life of the integrated bus bar is prolonged;

2. the bus bar and the electric element are respectively embedded in the first groove and the second groove, so that the thickness of the integrated bus bar is reduced, the volume of the integrated bus bar is further reduced, and the structure of the battery core is finer and more compact; and through thinner integrated busbar for the distance between the electrical component that has the detection function such as temperature detector on the integrated busbar and electric core or busbar further reduces, thereby reduces the detection error that leads to because of the too big or electric signal transmission time overlength of detection distance, in order to improve the integrated busbar and detect and control the accuracy of electric core.

3. The electrical circuit inside the PCB board is utilized, so that the busbar and the electrical element can be respectively electrically conducted with the main body, the use of connecting terminals is avoided, the number of parts of the integrated busbar is reduced, the complexity of the manufacturing procedure of the integrated busbar is further reduced, and the production cost is reduced.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.

FIG. 1 is a schematic diagram of an integrated bus bar according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of an integrated bus bar according to an embodiment of the present utility model;

wherein: 1. a busbar; 2. a main body; 20. a PCB board; 21. a first groove; 22. a second groove; 23. a connector; 3. and a mounting groove.

Detailed Description

Various embodiments of the utility model are disclosed in the following drawings, in which details of the practice are set forth in the following description for the purpose of clarity. However, it should be understood that these practical details are not to be taken as limiting the utility model. That is, in some embodiments of the utility model, these practical details are unnecessary. Moreover, for the purpose of simplifying the drawings, some conventional structures and components are shown in the drawings in a simplified schematic manner.

It should be noted that all directional indications such as up, down, left, right, front, and rear … … in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture such as that shown in the drawings, and if the particular posture is changed, the directional indication is changed accordingly.

In addition, the descriptions of the "first," "second," and the like, herein are for descriptive purposes only and are not intended to be specifically construed as order or sequence, nor are they intended to limit the utility model solely for distinguishing between components or operations described in the same technical term, but are not to be construed as indicating or implying any relative importance or order of such features. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

For a further understanding of the utility model, its features and advantages, reference is now made to the following examples, which are illustrated in the accompanying drawings in which:

the busbar of current soft packet battery module is firstly with the busbar through the support setting on the soft packet battery, make the busbar pass through slice electrode terminal and leg joint again, because support and busbar are split type setting, the busbar all needs to be connected through connecting terminal with the electrical component on support or busbar and the support, the in-process of connecting at both is complicated, cause the problem that the cost of manufacture of product is high easily, simultaneously because connecting terminal's connection stability is poor, still cause the busbar to take place the risk that drops on the support easily, lead to the problem of product life decline.

In order to solve the above technical problems, the present embodiment provides the following technical solutions:

referring to fig. 1-2, the present embodiment provides an integrated bus bar, which includes a main body 2, a plurality of bus bars 1, and a plurality of electrical components; the main body 2 comprises a plurality of stacked PCB boards 20; the plurality of bus bars 1 and the plurality of electric elements are respectively fixedly connected with the main body 2; one side of the main body 2 is provided with a plurality of first grooves 21 for accommodating the bus bars 1, and the other side of the main body 2 is provided with a plurality of second grooves 22 for accommodating the electrical components.

Specifically, the busbar 1 and the electric element are respectively fixed on the main body 2, so that the main body 2 replaces a bracket to fix the busbar 1 and the electric element, thereby saving the use of the bracket and the cost, leading the structure of the integrated busbar to be compact, being beneficial to improving the stability of the connection of the busbar 1 and the electric element on the main body 2 respectively and further being beneficial to prolonging the service life of the integrated busbar; the busbar 1 and the electric element are respectively embedded in the first groove 21 and the second groove 22, so that the thickness of the integrated busbar is reduced, the volume of the integrated busbar is reduced, and the structure of the battery core is finer and more compact; and through thinner integrated busbar for the electrical component that has the function of detecting such as temperature detector on the integrated busbar and electric core or busbar 1's distance further reduces, thereby reduces the detection error that brings because of the too big or electric signal transmission time of detection distance overlength, in order to improve the integrated busbar and detect and control the accuracy of electric core. The electrical circuit inside the PCB 20 is utilized to realize that the busbar 1 and the electrical element are respectively electrically conducted with the main body 2, so that the use of connecting terminals is avoided, the number of parts of the integrated busbar is reduced, the complexity of the manufacturing procedure of the integrated busbar is further simplified, and the production cost is reduced.

In one embodiment, a polypropylene sheet is used for hot press curing molding between two adjacent PCBs 20. The polypropylene has high crystallinity and regular structure, so that the polypropylene has excellent mechanical property, heat resistance and insulativity; in this embodiment, the polypropylene sheet is used to help to improve the strength between two adjacent PCBs 20, so as to further ensure the structural stability of the main body 2, and meanwhile, the polypropylene sheet is used to effectively insulate and separate the two adjacent PCBs 20, so as to avoid the problem that electrical short circuit is easy to occur between the electrical circuits inside the two adjacent PCBs 20 due to mutual contact, and meanwhile, the polypropylene sheet is used to insulate the two adjacent PCBs, so that the heat of the battery core is reduced to be mutually transferred between the two adjacent PCBs 20, and finally, the heat transferred from the PCB 20 to the temperature detector in the electrical element is reduced, so as to avoid the problem that the detection error of the temperature detector is increased; finally, the safety performance of the main body 2 can be further improved by the corrosion resistance of polypropylene.

It will be appreciated that the thickness of the PCB 20 and the thickness of the polypropylene sheet should be set according to the detection requirement of the integrated bus bar corresponding to the actual battery cell.

In one embodiment, the electrical element includes an NTC thermistor, which is advantageous to ensure that the NTC thermistor can be smoothly embedded in the main body 2 through the second groove 22 by using an NTC thermistor with small volume and high sensitivity, so as to reduce the thickness of the main body 2 and improve the detection accuracy of the integrated bus bar.

In one embodiment, the busbar 1 and the main body 2 are respectively provided with a plurality of mutually aligned mounting grooves 3 in a penetrating way; when the integrated busbar is arranged on the battery cell, the electrodes of the battery cell respectively penetrate through the mounting grooves 3, so that the battery cell is electrically connected with the integrated busbar, and meanwhile, the stability of the electric connection between the battery cell and the integrated busbar can be effectively improved, and the stability of the detection of the battery cell by the integrated busbar is improved.

In one embodiment, the main body 2 is provided with a plurality of connectors 23, the integrated bus bar can be quickly connected with external equipment through the connectors 23, and meanwhile, the connectors 23 are electrically connected with the electrical circuit inside the PCB board 20, so that the integrated bus bar is more convenient in the installation and use process, and the connectors 23 belong to the prior art and are not repeated here.

In one embodiment, each of the second grooves 22 is aligned with any one of the first grooves 21, so that a plurality of electrical components mounted in the second groove 22 can respectively correspond to the bus bars 1 of the second groove 22, the distance between the electrical components and the corresponding bus bars 1 is reduced, and when the bus bars 1 are communicated with the electrodes of the battery cells, the electrical components can respectively and rapidly detect the voltage, current, temperature and other properties of the battery cells through the bus bars 1, thereby being beneficial to improving the detection efficiency and detection precision of the integrated bus bars.

In one embodiment, the first groove 21 and the second groove 22 are formed by directly routing the main body 2. After the main body 2 is formed by a plurality of stacked PCBs 20 in a hot pressing mode, the two side faces of the main body 2 are directly subjected to groove milling processing, and the first groove 21 and the second groove 22 are formed respectively, so that the processing difficulty of the integrated busbar is reduced, and the production cost of the integrated busbar is reduced.

All technical features in the embodiment can be freely combined according to actual needs.

The foregoing description is only of the preferred embodiments of the present utility model, and is not intended to limit the utility model in any way, but any simple modification, equivalent variation and modification of the above embodiments according to the technical principles of the present utility model fall within the scope of the technical solutions of the present utility model.

Claims

1. An integrated busbar, characterized in that: comprises a main body (2), a plurality of bus bars (1) and a plurality of electric elements; the main body (2) comprises a plurality of PCB boards (20) which are arranged in a stacked manner; the plurality of bus bars (1) and the plurality of electrical elements are respectively fixedly connected with the main body (2); one side of the main body (2) is provided with a plurality of first grooves (21) for accommodating the bus bars (1), and the other side of the main body (2) is provided with a plurality of second grooves (22) for accommodating the electric elements.

2. An integrated bus bar as set forth in claim 1 wherein: and two adjacent PCB boards (20) are formed by hot pressing and curing of polypropylene sheets.

3. An integrated bus bar as set forth in claim 1 wherein: the electrical element comprises an NTC thermistor.

4. An integrated bus bar as set forth in claim 1 wherein: a plurality of mutually aligned mounting grooves (3) are respectively and penetratingly formed in the busbar (1) and the main body.

5. An integrated bus bar as set forth in claim 1 wherein: the main body (2) is provided with a plurality of connectors (23) which are respectively connected with one PCB (20).

6. An integrated bus bar as set forth in claim 1 wherein: each of the second grooves (22) is aligned with any one of the first grooves (21), respectively.