CN211700420U

CN211700420U - Utmost point post electric connection device, battery package and vehicle

Info

Publication number: CN211700420U
Application number: CN202020380017.5U
Authority: CN
Inventors: 张宇; 崇全强; 曹艳军; 黄成林; 闫艳翠
Original assignee: Beijing Electric Vehicle Co Ltd
Current assignee: Beijing Electric Vehicle Co Ltd
Priority date: 2020-03-23
Filing date: 2020-03-23
Publication date: 2020-10-16
Anticipated expiration: 2030-03-23

Abstract

The application discloses utmost point post electric connection device, battery package and vehicle for battery package, utmost point post electric connection device include: an electrical connection plate configured in a bent structure to form a first electrical connection plate and a second electrical connection plate that are stacked on each other; the sampling board, the sampling board sets up first electricity connect the board with between the second electricity connect the board and respectively with first electricity connect the board with the second electricity is connected the board electricity. Utmost point post electric connection device in this application simple structure, stable, the processing degree of difficulty is little, and the overall structure is similar "sandwich" structure, through gathering on the board transmits the voltage information in with the battery circuit board, has simplified the aluminium silk and has built and close welded step, need not occupy extra station on producing the line, has practiced thrift production space, has greatly improved production efficiency and assembly efficiency, has practiced thrift manufacturing cost.

Description

Utmost point post electric connection device, battery package and vehicle

Technical Field

The application relates to the technical field of vehicles, in particular to a pole electric connection device for a battery pack, the battery pack and a vehicle.

Background

Need gather the voltage information of every battery in the battery package, adopt copper core cable as intermediate medium to be connected to the collection circuit board with the aluminium bar usually in the trade, in recent years gradually popularize with the mode transmission voltage information of aluminium silk plus flexible circuit board, aluminium silk plus flexible circuit board is through bonding welding with the aluminium silk as the connection carrier, can protect collection circuit and battery like this. But because the size of new forms of energy power battery increases gradually, the assembly degree of difficulty and danger degree also increase correspondingly, bonding welded yields are low, intensity is little and equipment price is high, need occupy defects such as more stations for the process is complicated, and product stability is relatively poor.

Content of application

The present application is directed to solving at least one of the problems in the prior art.

Therefore, the first purpose of the present application is to provide an electrical connection device for a pole of a battery pack, which has a simple process, a stable structure and a high versatility;

a second objective of the present application is to provide a battery pack, which includes the above-mentioned terminal post electrical connection device, and has the characteristics of being safer, more efficient, more economical, and the like;

a third object of the present application is to provide a vehicle including the battery pack described above.

In order to solve the above problems, a first aspect of the present application provides a pole electrical connection device for a battery pack, including: an electrical connection plate configured in a bent structure to form a first electrical connection plate and a second electrical connection plate that are stacked on each other; the sampling board, the sampling board sets up first electricity connect the board with between the second electricity connect the board and respectively with first electricity connect the board with the second electricity is connected the board electricity.

Utmost point post electric connection device in this application simple structure, stable, the processing degree of difficulty is little, and the overall structure is similar "sandwich" structure, through gathering on the board transmits the voltage information in with the battery circuit board, has simplified the aluminium silk and has built and close welded step, need not occupy extra station on producing the line, has practiced thrift production space, has greatly improved production efficiency and assembly efficiency, has practiced thrift manufacturing cost.

Further, the sampling plate comprises: sampling board body and with the end is drawn forth that sampling board body links to each other, sampling board body sets up first electricity connect the board with between the second electricity connect the board.

Furthermore, the first electric connection plate or the second electric connection plate is provided with a first limiting hole matched with a pole of the battery.

Furthermore, a second limiting hole matched with the pole is formed in the sampling plate body, and the second limiting hole is opposite to the first limiting hole.

Furthermore, the first limiting holes and the second limiting holes are multiple in structure, and each first limiting hole is opposite to the corresponding second limiting hole.

Further, the first limiting hole and the second limiting hole are both configured as rectangular holes.

Further, the electrical connection plate is configured as a conductive aluminum row.

Further, the sampling plate is configured as a nickel foil.

The second aspect of the present application provides a battery pack, including the pole electrical connection device.

The third aspect of the application provides a vehicle, which comprises the battery pack.

Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.

Drawings

The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural view of an electrical connection board provided with a first stopper hole according to an embodiment of the present application;

FIG. 2 is a schematic structural diagram of a sampling plate provided with a second limiting hole according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of a pole electrical connection device according to an embodiment of the present application.

Reference numerals:

the pole is electrically connected to the device 100,

a first electrical connection plate 1, a first stopper hole 101,

the second electrical connection plate 2 is provided with,

the sampling plate 3, the second limit hole 301,

sampling plate body 31, leading-out terminal 32.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.

A pole electrical connection device 100 for a battery pack according to an embodiment of the present application is described below with reference to fig. 1 to 3, including: an electrical connection plate and a sampling plate 3.

Specifically, the electrical connection plate is configured in a bent structure to form a first electrical connection plate 1 and a second electrical connection plate 2 which are superposed on each other; sampling board 3 sets up between first electric connection board 1 and second electric connection board 2 and is connected with first electric connection board 1 and second electric connection board 2 electricity respectively.

The voltage information of every battery all need gather in the battery package, and the mode of using aluminium silk to add flexible circuit board transmission voltage information has replaced the mode that uses copper core cable to be connected to the collection circuit board with the aluminium row as the intermediate medium in the tradition in the trade gradually popularizing in recent years, and it is better for the protection of copper core cable, and the sampling is more accurate, can protect acquisition circuit and battery. However, the aluminum wire and flexible circuit board need to be bonded and welded by the aluminum wire, and the bonding and welding have the defects of low yield, small strength, high equipment price, need to occupy more stations and the like, so that the process is complex and the product stability is poor.

In the prior art, a nickel strap is welded to a circuit board through laser to serve as a connecting carrier, but the nickel strap still has the defects of poor welding consistency, mechanical impact resistance and weak vibration resistance, and an additional high-precision tool clamp is required during assembly, so that additional working procedures and manufacturing cost are increased.

Female the portion of arranging for power battery utmost point post connection, this application has expanded the female function of arranging of utmost point post connection, makes it have voltage acquisition's function, passes through the voltage information of battery on the BMS (Battery management System) of battery System is transmitted to the circuit board, simplifies the sampling mode of current battery monomer voltage, has greatly improved production efficiency and assembly efficiency, has practiced thrift manufacturing cost.

It should be noted that the above-mentioned bus bar is an electrical connection board in the present application.

Use the crib crimper in this application to buckle the electricity connecting plate in order to form first electricity connecting plate 1 and second electricity connecting plate 2, sampling board 3 is placed between first electricity connecting plate 1 and second electricity connecting plate 2, make the upper surface and the first electricity connecting plate 1 of sampling board 3 laminate completely, the lower surface and the second electricity connecting plate 2 of sampling board 3 laminate completely, use molecule diffusion welding machine to compress tightly first electricity connecting plate 1, sampling board 3 and second electricity connecting plate 2 to weld really at last, processing is structure as an organic whole.

According to utmost point post electric connection device 100 in this application simple structure, stable, the processing degree of difficulty is little, and overall structure is similar "sandwich" structure, owing to be integrative press forming product, therefore utmost point post electric connection device 100 itself anti-vibration ability is strong, through gathering on the board transmits the voltage information in the battery to the circuit board, has simplified the aluminium silk and has built and close welded step, need not occupy extra station on producing the line, when having practiced thrift production space, has solved the shortcoming that exists among the prior art.

According to one embodiment of the present application, the sampling plate 3 comprises: the sampling plate comprises a sampling plate body 31 and a leading-out end 32 connected with the sampling plate body 31, wherein the sampling plate body 31 is arranged between a first electric connecting plate 1 and a second electric connecting plate 2; specifically, the sampling plate body 31 and the leading-out terminal 32 connected to the sampling plate body 31 may be an integrally formed part.

Firstly, cutting a sampling plate 3 by a small-sized cutting machine, then placing a sampling plate body 31 between a first electric connection plate 1 and a second electric connection plate 2, connecting one end of a leading-out end 32 with the sampling plate body 31, and welding the other end of the leading-out end 32 with a sampling PCB (Printed Circuit Board) or a flexible Circuit Board of a battery; the sampling plate body 31 collects information of the cell voltage battery as a sampling terminal, and then transmits the information of the cell voltage battery to the BMS through the PCB or the flexible circuit board welded to the leading-out terminal 32, thereby completing the information collection of the battery voltage.

Specifically, the terminal 32 is connected to the sampling PCB or the flexible circuit board of the battery by soldering. The price of soldering equipment is far lower than that of bonding equipment and low-power laser welding equipment required in the prior art, and the soldering can be used for achieving the purpose of connection and saving the manufacturing cost.

According to one embodiment of the present application, the first electrical connection plate 1 or the second electrical connection plate 2 is provided with a first limiting hole 101 for fitting with a pole of a battery. Cutting and molding the electric connection plate by using a large-scale cutting machine, making a first limiting hole 101 in the first electric connection plate 1 or the second electric connection plate 2, and nesting adjacent polar columns on the battery in the first limiting hole 101.

According to an embodiment of the present application, the sampling plate body 31 is provided with a second limiting hole 301, which is engaged with the post, and the second limiting hole 301 is opposite to the first limiting hole 101. Use small-size cutting off machine to make the spacing hole of second 301 on sampling board body 31, sampling board body 31 sets up between first electric connecting plate 1 and second electric connecting plate 2, with the spacing hole of second 301 and the alignment of first spacing hole 101, adjacent utmost point post nestification is in first spacing hole 101 and the spacing hole of second 301 and is passed first spacing hole 101 in proper order, the spacing hole of second 301 directly supports first electric connecting plate 1 or second electric connecting plate 2 on the battery, utmost point post and first electric connecting plate 1 or second electric connecting plate 2 use laser to weld.

According to an embodiment of the present application, each of the first position-limiting holes 101 and the second position-limiting holes 301 is configured in a plurality, and each of the first position-limiting holes 101 is directly opposite to the corresponding second position-limiting hole 301. The number of the first limiting holes 101 and the second limiting holes 301 can be set according to the number of the poles in the battery, each pole is nested and limited, and the pole electric connection device 100 is high in strength, good in performance and firm in structure.

According to one embodiment of the present application, the first stopper hole 101 and the second stopper hole 301 are each configured as a rectangular hole. This application is mainly to square aluminum hull battery, and the general design of utmost point post of square aluminum hull battery is the rectangle, and first spacing hole 101 and the spacing hole 301 of second all construct the rectangular hole and are favorable to carrying out limiting displacement to square aluminum hull battery's utmost point post.

At present because new forms of energy power battery size crescent, the assembly degree of difficulty and danger degree also correspondingly increase, first spacing hole 101 and the spacing hole 301 of second can be according to the size adjustment trompil size of utmost point post in the square aluminum hull battery size of difference, can adapt to the metal casing battery of multiple specification like this, and the commonality is high, has reduced production processes simultaneously, and stable in structure has ensured the connection safety of battery effectively.

In one embodiment according to the application, the electrical connection board is configured as a conductive aluminum row. The common material of the electric connection plate is aluminum or copper, and the aluminum has light weight, low cost and easy welding; the copper has high conductivity and high strength; by combining the advantages and disadvantages of the two materials, 1-series aluminum is generally used as a manufacturing material of the electric connection plate in the industry; the electrically conductive aluminium row in this application is formed by 1 mm's aluminum product base plate cutting.

According to one embodiment of the present application, the sampling plate 3 is configured as a nickel foil. The nickel foil is simple in structure, small in processing difficulty and high in processing consistency, and is formed by cutting a 0.1mm nickel plate base material; the sampling plate 3 is welded in the flexible circuit board through tin soldering, the welding spot is fixed, and the ductility of the aluminum foil and the flexible circuit board is relied on, so that the anti-seismic effect is good.

According to the present application, a battery pack includes the above-mentioned terminal post electrical connection device 100. Because the pole electric connection device 100 can be suitable for various square aluminum-shell batteries, the production process during manufacturing is simplified, the stability of the product is improved, and the manufactured battery pack is safer, more efficient and more economical.

A vehicle according to the application comprises the battery pack. The vehicle can be purchased at a relatively low price, is safer in the using process, guarantees the property safety of consumers, and can obtain more interest space for merchants.

In the description of the present application, it is to be understood that the terms "upper", "lower", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

In the description of the present application, "the first feature" and "the second feature" may include one or more of the features.

In the description of the present application, "a plurality" means two or more.

In the description herein, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims

1. A utmost point post electric connection device for battery package which characterized in that includes:

an electrical connection plate configured in a bent structure to form a first electrical connection plate (1) and a second electrical connection plate (2) that are superposed on each other;

sampling board (3), sampling board (3) set up first electricity connect board (1) with between second electricity connect board (2) and respectively with first electricity connect board (1) with second electricity connect board (2) electricity is connected.

2. The electrical connection device of poles for battery packs according to claim 1, characterized in that said sampling plate (3) comprises: sampling board body (31) and with draw forth end (32) that sampling board body (31) link to each other, sampling board body (31) set up first electric connection board (1) with between second electric connection board (2).

3. The post electrical connection device for a battery pack according to claim 2, wherein the first electrical connection plate (1) or the second electrical connection plate (2) is provided with a first limiting hole (101) which is matched with the post of the battery.

4. The electric connection device for the pole of the battery pack as claimed in claim 3, wherein the sampling plate body (31) is provided with a second limiting hole (301) matched with the pole, and the second limiting hole (301) is opposite to the first limiting hole (101).

5. The pole electrical connection device for a battery pack according to claim 4, wherein the first limiting hole (101) and the second limiting hole (301) are each configured in plurality, and each first limiting hole (101) is directly opposite to the corresponding second limiting hole (301).

6. The pole electrical connection device for a battery pack according to claim 4, wherein the first and second position-limiting holes (101, 301) are each configured as a rectangular hole.

7. The post electrical connection device for a battery pack of claim 1, wherein the electrical connection plate is configured as a row of conductive aluminum.

8. The pole electrical connection device for battery packs according to claim 1, characterized in that the sampling plate (3) is constructed as a nickel foil.

9. A battery pack comprising the electrical post connection device of any one of claims 1-8.

10. A vehicle characterized by comprising the battery pack according to claim 9.