CN211578864U

CN211578864U - Wireless beam battery voltage acquisition loop connecting device

Info

Publication number: CN211578864U
Application number: CN201922287024.0U
Authority: CN
Inventors: 李标玉; 章春元; 胡磊; 刘石海; 周志武; 胡爱; 梁高华; 庞业海; 廖丁华
Original assignee: Shenzhen Gwkc New Energy Technology Co ltd
Current assignee: Shenzhen Gwkc New Energy Technology Co ltd
Priority date: 2019-12-18
Filing date: 2019-12-18
Publication date: 2020-09-25
Anticipated expiration: 2029-12-18

Abstract

The utility model discloses a wireless battery voltage acquisition loop connecting device, which is characterized in that the device comprises a BMS mainboard, a row of nuts and an acquisition board, wherein the row of nuts comprises a first row of nuts and a second row of nuts, and the acquisition board comprises a first acquisition board and a second acquisition board; one end of the first row of bus bars is welded and fixed with the first collecting plate through first row pins, and the other end of the first row of bus bars is fixedly welded on the BMS mainboard; female one end of second row through the second arrange the needle with the second acquisition board welded fastening, female other end fixed welding of second row is in on the BMS mainboard. The utility model discloses a wireless bunch battery voltage acquisition return circuit connecting device solves the problem that exists among the prior art, can replace the pencil in traditional battery voltage acquisition system with simple structure, has to prevent that the pencil misconnection, damaged, short circuit, bad connection etc..

Description

Wireless beam battery voltage acquisition loop connecting device

Technical Field

The utility model relates to a battery technology field, in particular to wireless bunch battery voltage acquisition return circuit connecting device.

Background

With the increasingly worsening of the global environment, the world demands for environmental protection travel more and more strongly. The electric driving of vehicles is the most mainstream choice at present, and lithium batteries are also increasingly selected as the power source of electric vehicles. With the large-scale popularization and application of lithium battery electric vehicles, a lot of problems also occur, wherein more problems are the wiring harness problem. The wire harness is composed of a conducting wire, a metal wire pressing terminal and a rubber shell connector. The wire is through colding pressing on metal terminal, then the card is in gluing the shell connector, glues the shell connector and realizes the fastening to inserting again, and this kind of connected mode has following main problems:

(1) because the wire is generally thin and movable, when the electric vehicle moves, the wire is easy to rub other structures, and is easy to damage for a long time to cause short circuit;

(2) the situation of infirm pressing often occurs when the metal terminal of the lead is cold-pressed, and the lead falls off due to vibration in later use, so that the lead is broken;

(3) when the metal terminals are fixed, a plurality of metal terminals are clamped on the same connector, and the wires are easy to be dislocated during the manufacturing of the wire harness, so that the system is in failure and downtime if the wires are light, short circuit fire occurs if the wires are heavy, and the like;

(4) the wiring harness design and production time period is long, and the cost is high.

(5) The appearance of the wire harness is messy and not beautiful enough.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a wireless bunch battery voltage acquisition return circuit connecting device solves the problem that exists among the prior art, can replace the pencil in traditional battery voltage acquisition system with simple structure, has concurrently and prevents that the pencil misconnection, damaged, short circuit, bad connection etc..

In order to achieve the above object, the utility model provides a wireless battery voltage acquisition loop connecting device, which is characterized in that, the device comprises a BMS mainboard, a row of nuts and an acquisition board, wherein the row of nuts comprises a first row of nuts and a second row of nuts, and the acquisition board comprises a first acquisition board and a second acquisition board;

one end of the first row of bus bars is welded and fixed with the first collecting plate through first row pins, and the other end of the first row of bus bars is fixedly welded on the BMS mainboard; the first collecting plate comprises a first collecting plate main body, a plurality of first collecting plate confluence points are arranged in the first collecting plate main body, each first collecting plate confluence point is electrically communicated with a corresponding pinhole on the first row of pinholes through a lead wire in the first collecting plate main body,

one end of the second row of bus bars is welded and fixed with the second collecting plate through second row of pins, and the other end of the second row of bus bars is fixedly welded on the BMS mainboard; the second is gathered the board and is included the second and gather the board main part, it gathers the board confluence point to be provided with a plurality of second in the board main part to gather the second, every the board confluence point is gathered to the second and is passed through the inside collection line of board main part is gathered to the second and corresponding pinhole electric connection on the second row of pinhole.

Preferably, in the above technical solution, the first collecting plate main body and the second collecting plate main body are both double-layer PCB boards made of general materials.

Preferably, in the above technical solution, the first row of bus bars and the second row of bus bars are soldered to the BMS board in parallel and electrically connected to internal circuit wirings of the BMS board.

Preferably, in the above technical solution, the second collecting plate main body is further provided with a plurality of temperature collecting points.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the utility model adopts the process of binding the pin header, the PCB and the aluminum wire to replace the wire harness in the traditional battery voltage acquisition system; all connections are welded or clamped in the assembling process, cold-pressed terminals are not needed, and the wiring harness does not fall off or contact badly in the using process.

2. The utility model has the advantages of foolproof structure, simple assembly, one-to-one correspondence of all the pins and no misconnection; the combined structure is firm, no relative displacement exists, no friction is generated, and the condition of damage and short circuit of the wiring cannot be generated.

3. The utility model discloses suitable batch production both reduction in production cost is pleasing to the eye again.

Drawings

Fig. 1 is a schematic structural view of a wireless battery voltage acquisition loop connection device according to the present invention;

fig. 2 is a schematic structural view of a first collecting plate according to the present invention;

fig. 3 is a schematic diagram of a connection state between the first collecting plate and the battery cell according to the present invention;

fig. 4 is a schematic structural view of a second collecting plate according to the present invention.

Description of the main reference numerals:

1-BMS mainboard, 21-first row of bus, 22-second row of bus, 31-first collection plate, 311-first collection plate main body, 312-first collection plate confluence point, 313-first row of pinholes, 314-first row of pins, 32-second collection plate, 321-second collection plate main body, 322-second collection plate confluence point, 333-collection line, 324-temperature collection point, 325-second row of pinholes, 4-electric core and 41-aluminum wire.

Detailed Description

The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited by the following detailed description.

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

In the description of the present invention, it is to be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "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; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

As shown in fig. 1, the utility model discloses a wireless battery voltage acquisition loop connecting device, it includes BMS mainboard 1, row mother and acquisition board, wherein row mother includes first row mother 21 and second row mother 22, and acquisition board includes first acquisition board 31 and second acquisition board 32; the one end of female 21 of first row is through first row of needle 314 and first collection board 31 welded fastening, and the other end fixed welding of female 21 of first row is on BMS mainboard 1, and the one end of female 22 of second row is through second row of needle and second collection board 32 welded fastening, and the other end fixed welding of female 22 of second row is on BMS mainboard 1. Preferably, the first row of bus bars 21 and the second row of bus bars 22 are soldered in parallel to the BMS board 1 and electrically connected to internal circuit wirings of the BMS board 1.

Further, in this embodiment, the first collecting plate 31 is preferably as shown in fig. 2 and fig. 4, the first collecting plate 31 includes a first collecting plate main body 311, the first collecting plate main body 311 is a double-layer PCB made of a common material, a plurality of first collecting plate confluence points 312 are disposed in the first collecting plate main body 311, and each first collecting plate confluence point 312 is electrically connected to a corresponding pin hole on the first row of pin holes 313 through a conducting wire (also referred to as a collecting wire) inside the first collecting plate main body 311.

Further, in this embodiment, the second collecting plate 32 is preferably as shown in fig. 3, the second collecting plate 32 includes a second collecting plate main body 321, and the second collecting plate main body 321 is a double-layer PCB made of a common material, and is a double-layer PCB; the second collecting plate main body 321 is provided with a plurality of second collecting plate confluence points 322, and each second collecting plate confluence point 322 is electrically communicated with a corresponding pinhole on the second row of pinholes 325 through a collecting line 333 inside the second collecting plate main body 321. The second collection plate main body 321 is further provided with a plurality of temperature collection points 324, preferably two temperature collection points 324.

Further, in this embodiment, when the method is applied specifically, the pin header is first welded to the collecting plate, and the bus header is welded to the BMS plate (the BMS plate in the prior art is adopted); then, the voltage collecting points (the confluence point of the first collecting plate and the confluence point of the second collecting plate) of the battery core 4 are bound and collected on the collecting plate through an aluminum wire 41, and the collecting wire on the collecting plate connects the signal to the pin position corresponding to the pin header. The BMS mainboard and the acquisition board are plugged in a one-to-one mode through the pins of the pin header and the mother header in a T-shaped plug-in mode, and signals are transmitted to the BMS mainboard.

To sum up, the utility model discloses an adopt the technology that row needle, PCB, aluminium silk were bound, replace the pencil among the traditional battery voltage acquisition system, all electric connection all weld or the card dies at this in-process, do not have the terminal of colding pressing, can avoid the emergence of the bad contact problem that drops or contacts of use pencil. And simple structure is even through PCB inboard electrical property for all pins one-to-one do not can the misconnection. After the components are combined, the structure is firm, relative displacement is avoided, friction is avoided, damage and short circuit of the wiring are avoided, and the wire is suitable for batch production, so that the production cost is reduced, and the appearance is attractive.

The component types, structures, shapes, connection relations, working principles and the like which are not described in the specification are all realized by adopting the prior art and belong to the common general knowledge.

The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.

Claims

1. A wireless beam battery voltage acquisition loop connecting device is characterized by comprising a BMS mainboard, row nuts and acquisition boards, wherein the row nuts comprise a first row nut and a second row nut, and the acquisition boards comprise a first acquisition board and a second acquisition board;

2. The wireless-beam-battery-voltage-acquisition-loop connecting device as claimed in claim 1, wherein the first acquisition board main body and the second acquisition board main body are both double-layer PCB boards made of common materials.

3. The harness-less battery voltage acquisition loop connection device of claim 1 wherein the first row of bus bars and the second row of bus bars are soldered in parallel to the BMS board and are electrically connected to internal circuit wiring of the BMS board.

4. The wireless-beam battery voltage acquisition loop connection device of claim 1, wherein the second acquisition board body is further provided with a plurality of temperature acquisition points.