CN117374623A - Board end connector, wire end connector, communication connector assembly and battery pack - Google Patents

Board end connector, wire end connector, communication connector assembly and battery pack Download PDF

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Publication number
CN117374623A
CN117374623A CN202311288988.1A CN202311288988A CN117374623A CN 117374623 A CN117374623 A CN 117374623A CN 202311288988 A CN202311288988 A CN 202311288988A CN 117374623 A CN117374623 A CN 117374623A
Authority
CN
China
Prior art keywords
end connector
connector
board
housing
pin
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202311288988.1A
Other languages
Chinese (zh)
Inventor
陈健宝
陆君高
张国江
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Eve Energy Co Ltd
Original Assignee
Eve Energy Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Eve Energy Co Ltd filed Critical Eve Energy Co Ltd
Priority to CN202311288988.1A priority Critical patent/CN117374623A/en
Publication of CN117374623A publication Critical patent/CN117374623A/en
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/50—Fixed connections
    • H01R12/51—Fixed connections for rigid printed circuits or like structures
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/639—Additional means for holding or locking coupling parts together, after engagement, e.g. separate keylock, retainer strap

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  • Connector Housings Or Holding Contact Members (AREA)

Abstract

The invention provides a board end connector, a wire end connector, a communication connection assembly and a battery pack, wherein the board end connector is used for being connected with a circuit board of a BMS (battery management system) of the battery pack, the battery pack further comprises a box body and a first connecting piece arranged on the inner side of the box body, the first connecting piece comprises a first accommodating cavity, the first accommodating cavity is used for accommodating at least one part of the board end connector, the board end connector comprises a first row of pins, the first row of pins are provided with welding ends, and the welding ends are used for being welded with the circuit board; a first housing provided with a first pin header slot for receiving at least a portion of the first pin header; the first shell further comprises at least one fixing column, and the fixing column can be fixed in the fixing hole of the circuit board.

Description

Board end connector, wire end connector, communication connector assembly and battery pack
Technical Field
The invention relates to the technical field of batteries, in particular to a plate end connector, a wire end connector, a communication connector assembly and a battery pack.
Background
The battery pack comprises a BMS (battery management system), a communication connector is usually arranged between the battery pack and an electric automobile powered by the battery pack, the communication connector is an interface for connecting the BMS with an electric control system of the battery automobile, in the related technology, a wiring harness is usually used for switching between the communication connector and a circuit board of a main control module of the BMS, various problems exist in wiring harness switching, for example, a switching point of the wiring harness can have poor contact or loosening conditions, and communication signals between the BMS and an automobile end are interrupted.
Disclosure of Invention
The embodiment of the invention provides a board end connector, a wire end connector, a communication connector assembly and a battery pack, which can solve the technical problems of poor contact and difficult maintenance caused by the fact that a wire harness is usually used for switching between the communication connector and a circuit board of a main control module of a BMS.
In a first aspect, an embodiment of the present invention provides a board-end connector for connection with a circuit board of a BMS of a battery pack, the battery pack further including a case and a first connection member disposed inside the case, the first connection member being provided with a first receiving cavity for receiving at least a portion of the board-end connector, the board-end connector further comprising:
the first pin header is provided with a welding end which is used for welding with the circuit board;
a first housing provided with a first pin header slot for receiving at least a portion of the first pin header;
the first shell further comprises at least one fixing column, and the fixing column is used for being fixed in the fixing hole of the circuit board.
In one embodiment, the first housing has a first top end and a first bottom end disposed opposite to each other ， The fixed column comprises a first fixed column and a second fixed column, the first fixed column is located at one side of the first bottom end, and the second fixed column is located at the other side of the first bottom end.
In an embodiment, the first fixing column is cylindrical, and the second fixing column is elliptical.
In one embodiment, the first housing has a first top end and a first bottom end disposed opposite to each other ， The first housing is provided with a first groove recessed inward from the first bottom end, and the board end connector further comprises a flexible sealing element accommodated in the first groove.
In an embodiment, a portion of the first pin header slot is located within the first groove, and a longitudinal spacer is formed between a top end face of the first pin header slot and an open end of the first groove, the longitudinal spacer housing the sealing element.
In an embodiment, the first row of pins is configured to be disposed through the sealing element.
In an embodiment, the outer wall of the first housing is provided with an annular groove, and the board end connector further comprises a sealing ring, and the sealing ring is accommodated in the annular groove.
In an embodiment, the first housing includes a first buckle and a second buckle that are disposed at intervals, the first connecting piece includes a first notch and a second notch, the first buckle is used for being clamped with the first notch, and the second buckle is used for being clamped with the second notch.
In one embodiment, the first housing has a first top end and a first bottom end disposed opposite to each other ， The first shell comprises a first groove, a second groove and a third groove which are recessed inwards from the first bottom end, the second groove and the third groove are respectively positioned on two sides of the first groove, the first buckle is configured to be bent towards the inside of the second groove, and the second buckle is configured to be bent towards the inside of the third groove.
In a second aspect, an embodiment of the present invention provides a line terminal connector for connecting with a board terminal connector inside a battery pack, the board terminal connector including the above board terminal connector, the battery pack including a case and a second connecting member provided outside the case, the second connecting member including a second accommodation chamber for accommodating a portion of the line terminal connector, the line terminal connector comprising:
the second shell is provided with a second bottom end and a second top end which are oppositely arranged, a second pin arranging slot is further formed in the second shell, a first inserting port is formed in the position, located at the second bottom end, of the second pin arranging slot, a second inserting port is formed in the position, located at the second top end, of the second pin arranging slot, and the first inserting port can be used for inserting a first pin of the board end connector;
the second pin header is accommodated in the second pin header slot through the second insertion port, and one end of the second pin header is electrically connected with the other end of the first pin header.
In an embodiment, a plurality of limit notches are formed in the outer surface of the second shell, a plurality of ribs are formed in the inner side wall of the second connecting piece, and the ribs can be clamped in the limit notches.
In an embodiment, a third buckle is further arranged on the outer side wall of the second shell, a third notch is arranged on the side wall of the second connecting piece, the third buckle is in clamping connection with the third notch, the second shell comprises four side faces, the limiting notches are distributed on three side faces of the four side faces, and the third buckle is located on the other side face of the four side faces.
In a third aspect, embodiments of the present invention provide a communication connector assembly comprising the board end connector described above and the wire end connector described above, the board end connector being used in combination with the wire end connector.
In a fourth aspect, implementations of the present invention provide a battery pack comprising:
the box body is connected with a first connecting piece on the inner side of the box body, the first connecting piece is provided with a first accommodating cavity, a second connecting piece is connected on the outer side of the box body, and the second connecting piece is provided with a second accommodating cavity;
a BMS including a circuit board;
the board end connector comprises the board end connector, a part of the board end connector is contained in the first connecting piece, the board end connector comprises a first row of pins, and one end of the first row of pins is welded with the circuit board;
the wire end connector comprises the wire end connector, a part of the wire end connector is accommodated in the second connecting piece, the wire end connector comprises a second pin array, and one end of the second pin array is electrically connected with the other end of the first pin array.
In an embodiment, the first connecting piece, the second connecting piece and the box body are integrally formed.
The embodiment of the invention has the beneficial effects that:
in the embodiment of the invention, the board end connector is arranged, the fixing column on the board end connector is fixed in the fixing hole on the circuit board, and the first row of pins of the board end connector are welded on the circuit board, so that the board end connector can be quickly connected on the circuit board, the connection between the board end connector and the circuit board is firm, and the problem of unstable connection caused by using the switching wire harness in the related art can be solved.
The beneficial effects of the embodiment of the invention also include:
in the embodiment of the invention, the traditional switching wire harness is changed into the board-end connector, the board-end connector is provided with the first shell, the first row of pins are accommodated in the first shell, and the first shell can prevent liquid from entering the circuit board, so that the waterproof performance of the battery pack is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic perspective view of a communication connector assembly according to an embodiment of the present invention;
FIG. 2 is an exploded view of a communication connector assembly provided by the practice of the present invention;
FIG. 3 is an exploded view of a board end connector provided by an embodiment of the present invention;
fig. 4 is a perspective view of one view of the first housing provided by an embodiment of the present invention;
FIG. 5 is a perspective view of yet another view of the first housing provided by an embodiment of the present invention;
fig. 6 is a perspective view of a wire end connector provided by an embodiment of the present invention;
FIG. 7 is a perspective view of one view of a second connector provided by an embodiment of the present invention;
FIG. 8 is a perspective view of a first connector provided by an embodiment of the present invention;
FIG. 9 is a perspective view of a second connector provided by an embodiment of the present invention;
reference numerals:
100. a communication connection assembly;
200. a board end connector; 20. a first housing; 21. a first tip; 22. a first bottom end; 23. a first pin header slot; 24. fixing the column; 241. a first fixing column; 242. a second fixing column; 251. a first groove; 252. a second groove; 253. a third groove; 254. a fourth groove; 255. a fifth groove; 27. an annular groove; 29. a guide part; 261. a first buckle; 262. a second buckle; 263. a first U-shaped notch; 264. a second U-shaped notch; 28. an outer flange; 30. a first row of pins; 31. a limit structure; 32. a welding end; 50. a sealing member; 51. a sealing plug;
300. a wire end connector; 60. a second housing; 61. a second top end; 62. a second bottom end; 63. a second pin header slot; 631. a first insertion port; 632. a second insertion port; 64. a limit notch; 65. a third buckle; 70. a second row of pins;
10. a case; 11. a circuit board; 111. a fixing hole; 1111. a first fixing hole; 1112. a second fixing hole; 12. an opening;
40. a first connector; 41. a first accommodation chamber; 421. a first notch; 422. a second notch;
80. a second connector; 81. a second accommodation chamber; 82. a rib; 83. a third notch;
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention. Furthermore, it should be understood that the detailed description is presented herein for purposes of illustration and description only, and is not intended to limit the invention. In the present invention, unless otherwise indicated, terms of orientation such as "upper" and "lower" are used to generally refer to the upper and lower positions of the device in actual use or operation, and specifically the orientation of the drawing figures; while "inner" and "outer" are for the outline of the device.
An embodiment of the invention provides a battery pack, which includes a case 10, and a plurality of battery modules accommodated in the case 10, wherein each battery module includes a plurality of battery cells.
The battery pack also comprises a BMS (battery management system), wherein the BMS comprises a CMU (cell monitoring unit) and a BMU (battery management unit), the CMU is used for measuring parameters such as voltage, current and temperature of the battery module, and the parameters are transmitted to the BMU, the BMU is responsible for evaluating data transmitted by the CMU and sending out corresponding control instructions so as to avoid that the battery exceeds allowable use conditions, and the BMU is also used for managing the electric quantity and the temperature of the battery pack.
The battery pack also includes a cooling system including cooling plates, fluid lines, control valves, etc., which are used to maintain the battery pack at a normal operating temperature.
The lithium ion battery pack has high energy density and long cycle life, and thus it can be applied to various types of electric vehicles, such as electric vehicles, electric motorcycles, electric bicycles, electric buses, electric trucks, including pure electric vehicles, plug-in hybrid vehicles, fuel cell vehicles, and hybrid vehicles.
The battery pack and the electric automobile are further provided with a communication connector, the communication connector is used as a connection interface between the BMS and the electric control system of the electric automobile, the communication connector can be used for carrying out data transmission, control instruction transmission, state monitoring, protection and other aspects, the data transmitted among the battery pack and the electric automobile have important roles, the data transmitted among the battery pack and the electric automobile comprise information such as electric quantity, current, voltage, temperature, battery state and system fault code of the battery pack collected in a main control module of the BMS, the control instructions comprise parameter instructions for adjusting the charging process and the discharging process of the battery pack, the state detection and protection functions comprise timely detection of the health state of the battery, such as overcharge, overdischarge and overtemperature, and corresponding protection measures are adopted, and therefore the service life and the safety performance of the battery pack are improved.
In the related art, a wire harness is generally used for switching between the communication connector and the circuit board of the main control module of the BMS, one end of the wire harness is connected with the circuit board, the other end of the wire harness is connected with the communication connector, and excessive wire harnesses are used for solving various problems, for example, the switching point of the wire harness may have poor contact or loose condition, and then communication signals between the BMS and the automobile end are interrupted. Furthermore, when communication faults occur, a plurality of links such as a plurality of wire harnesses and interfaces thereof are required to be checked step by step, so that the difficulty and time for fault positioning are increased.
In view of the above, an embodiment of the present invention provides a communication connection assembly, as shown in fig. 1, which is a perspective view of the communication connection assembly 100, as shown in fig. 2, which is an exploded view of the communication connection assembly 100, the communication connection assembly 100 includes a board end connector 200 and a wire end connector 300, wherein the board end connector 200 is disposed inside a case 10 of a battery pack, the wire end connector 300 is connected with a socket exposed on the case 10, one end of the board end connector 200 is electrically connected with a circuit board 11 of a BMS, the other end of the board end connector 200 is electrically connected with one end of the wire end connector 300, and the other end of the wire end connector 300 is connected with an electrical system of an electric vehicle.
Referring further to fig. 3-5, in one embodiment of the present invention, a novel board end connector 200 is provided, where the board end connector 200 includes a first housing 20, and the first housing 20 is preferably formed by plastic material molding, and the first housing 20 has a first top end 21 and a first bottom end 22 opposite to each other, and the first bottom end 22 has a flat end surface to facilitate the abutment with the circuit board 11.
The board-end connector 200 further includes a first pin header 30, where the first pin header 30 is made of a metal material and is formed into one or more elongated pins, the pin header structure is suitable for a frequent plugging scenario, the plurality of first pin headers 30 are densely arranged, and the specific pin header number of the first pin header 30 may be 3, 4, 6 or 8.
A first pin-arranging slot 23 is provided in the first housing 20, the first pin-arranging slot 23 extends from the interior of the first housing 20 to the top end of the first housing 20, the first pin-arranging slot 23 has a plurality of through jacks, the number of jacks of the first pin-arranging slot 23 is the same as the number of pins of the first pin-arranging slot 30, and the arrangement of the plurality of jacks of the pin-arranging slot 23 is the same as the arrangement of the first pin-arranging slot 30, so that each pin of the first pin-arranging slot 30 is kept in each jack of the first pin-arranging slot 23.
The first pins 30 are inserted into the first pin slot 23 from the opening at the first bottom end of the first housing and extend out of the top end of the first housing through the first pin slot 23, a limit structure 31 is provided on each first pin 30, and a mating structure is provided in each jack of the first pin slot 23, so that the fixing positions of the first pins 30 in the first pin slot 23 are kept consistent. Specifically, a barb structure is provided on each first pin header 30, and a bayonet structure is provided in the insertion hole of each first pin header slot 23, and the barb structure is engaged with the bayonet structure.
At least one fixing post 24 is disposed on the first housing 20, the fixing post 24 extends longitudinally from the first bottom end 22 of the first housing, at least one fixing hole 111 is disposed on the circuit board 11, and the fixing post 24 can be inserted into the fixing hole 111, so as to connect the board-end connector 200 with the circuit board 11.
In the embodiment of the present invention, the board-end connector 200 and the circuit board 11 are configured to be in an embedded clamping arrangement, and the board-end connector 200 is connected to the circuit board 11 by providing the fixing post structure on the first housing 20 of the board-end connector and the fixing hole structure for inserting or passing through the fixing post on the circuit board 11, further, the first pin header 30 has the soldering end 32, and the soldering end 32 is soldered to the circuit board 11 to electrically connect the first pin header 30 and the circuit board 11, so that the board-end connector 200 can be firmly fixed to the circuit board 11 by the two fixing structures, and the board-end connector 200 can be prevented from loosening or falling under vibration or other conditions.
Compared with the prior art in which a plurality of wire harnesses are connected to the circuit board 11, a complicated welding operation is generally required, but in the above embodiment, the board end connector 200 is directly clamped to the circuit board 11, so that the operation is simple and efficient, the assembly process of the battery pack is effectively simplified, the assembly efficiency is improved, and the assembly cost is further reduced.
Referring further to fig. 1 to 3, a first fixing post 241 and a second fixing post 242 are disposed at an interval of the bottom end 22 of the first housing 20, the first fixing post 241 and the second fixing post 242 are disposed opposite to each other, the first fixing post 241 is disposed near one side of the bottom end 22, and the second fixing post 242 is disposed near the other side of the bottom end 22.
The circuit board 11 is provided with a first fixing hole 1111 and a second fixing hole 1112 at intervals, the first fixing post 241 may be inserted into the first fixing hole 1111, and the second fixing post 242 may be inserted into the second fixing hole 1112.
In a further preferred embodiment, the first fixing post 241 and the second fixing post 242 have different shapes and sizes, so that the size of the cross section of the first fixing post 241 is different from the size of the cross section of the second fixing post 242, and the size of the first fixing hole 1111 on the circuit board is the same as the size of the second fixing hole 1112, because the first housing 20 is made of hard plastic, the substrate material of the circuit board 11 includes glass fiber cloth, polyimide, polytetrafluoroethylene, and other hard materials, when the first fixing post 241 and the first fixing hole 1111 are configured to be tightly fitted, and when the second fixing post 242 and the second fixing hole 1112 are also configured to be tightly fitted, the assembly between the second fixing post 242 and the second fixing hole 1112 is difficult, and therefore, in a preferred embodiment, the assembly margin is configured between the second fixing post 242 and the second fixing hole 1112, or the assembly margin is configured between the first fixing post 241 and the first fixing hole 1111, and the assembly margin is configured between the second fixing post 242 and the second fixing hole 1112.
In a specific example provided by the present invention, the first fixing post 241 is cylindrical, the second fixing post 242 is elliptical, and the first fixing post 241 and the first fixing hole 1111 are configured to be tightly fitted, and an assembly allowance is provided between the second fixing post 242 and the second fixing hole 1112, so that the first fixing post 241 can be disposed through the first fixing hole 1111, and the second fixing post 242 can also be disposed through the second fixing hole 1112.
The board-end connector 200 is installed inside a battery pack, and the battery pack is installed on a chassis of a vehicle, so that the working environment is bad, and therefore, the board-end connector 200 must meet the authentication requirements of IP67 and IPX9K protection levels. Specifically, the board-end connector 200 needs to have sealing performance, waterproof performance, dustproof performance, high temperature resistance and corrosion resistance, wherein the high temperature resistance and corrosion resistance can meet the requirements by preparing the first housing 20 by using a high temperature resistant and corrosion resistant plastic material, and the sealing performance, waterproof performance and dustproof performance need to optimize the internal and external structural design of the first housing 20, so that the board-end connector 200 has the capability of completely preventing the entry of fixed substances (such as dust, fine particles, etc.) and still can work normally in a short time immersed in a liquid of a certain depth, and the structure of the first housing 20 is optimized in the embodiment of the present invention, so that the board-end connector 200 can meet the requirements of IP67 authentication.
With further reference to the perspective view of the bottom end of the first housing 20 provided in fig. 4 and the perspective view of the top end of the first housing 20 provided in fig. 5, the first housing 20 has a first groove 251 recessed from the first bottom end 22 toward the inside thereof, and the inside of the first groove 251 is filled with a flexible sealing member 50, the sealing member 50 being made of a fiber cotton material, and the opening at the first bottom end 22 of the first housing 50 is sealed by the sealing member 50, thereby enhancing the waterproof performance of the board-end connector 200.
In a further preferred embodiment, the first pin header slots 23 are located inside the first recess 251, and a longitudinal space is provided between the top end surface of the first pin header slots 23 and the open end of the first recess 251, and the longitudinal space is filled with the sealing member 50. In the process of assembling the board-end connector 200, the first pins 30 pass through the flexible sealing element 50 and then are inserted into the first pin-arranging slots 23, and then in the process of fixing the board-end connector 200 on the circuit board 11, the sealing element 50 is used for sealing the inner cavity of the first groove 251 and the end opening of the first groove 251, and the gaps between the pins of the first pins 30, so that liquid or solid can be effectively prevented from entering through the board-end connector 200.
In a further preferred embodiment, referring to fig. 1, 2 and 8, a first connecting member 40 is provided at the inner side of the case 10, the first connecting member 40 includes an open first receiving chamber 41, the board end connector 200 is inserted and sealingly received in the interior of the first receiving chamber 41 through the open end of the first connecting member 40, referring to fig. 1 and 2, the interior profile shape of the first receiving chamber 41 is substantially the same as the exterior profile shape of the first housing 20, the first housing 20 has a guide portion 29, the guide portion 29 is disposed near the first top end 21 of the first housing 20, and the outer diameter of the guide portion 29 is gradually reduced toward the direction near the first top end 21, and correspondingly the end of the first receiving chamber 41 is tapered, and the board end connector 200 is easily inserted into the interior of the first connecting member 40 by providing the guide portion structure.
In a further preferred embodiment, a snap-fit connection is also provided between the board end connector 200 and the first connector 40, thereby helping to keep the board end connector 200 stably within the first connector 40, so as not to release the board end connector 200 from the first connector 40. Wherein the snap connection structure comprises a snap arranged at one of the first housing 20 and the first connecting member 40, and a notch arranged at the other of the first housing 20 and the first connecting member 40, in one example, a first snap 261 and a second snap 262 are arranged at intervals on the first housing 20, wherein the first snap 261 is arranged at one side of the first housing 20, the second snap 262 is arranged at the other side of the first housing 20, and correspondingly, a first notch 421 and a second notch 422 are arranged at intervals on the first connecting member 40, wherein the first snap 261 is clamped on the first notch 421, and the second snap 262 is clamped on the second notch 422.
In a further preferred embodiment, the first and second catches 261 and 262 are configured to be deformable to facilitate the securing of the board-end connector 200 to the first connector 40, and in a particular embodiment, the first housing 20 further comprises a second and third recess 252 and 253 recessed inwardly from the first bottom end 22 thereof, wherein the first recess 251 is located between the second and third recesses 252 and 253, a first partition wall is provided between the first and second recesses 251 and 252, and a second partition wall is provided between the first and third recesses 251 and 253, wherein a first U-shaped notch 263 is provided around the first catch 261, whereby the first catch 261 is configured to be bendable into the second recess 252, and a second U-shaped notch 264 is provided around the second catch 262 such that the second catch 262 is configured to be bendable into the third recess 253.
Further, an annular groove 27 is further provided on the outer wall of the first housing 20, and a sealing plug 51 is accommodated in the annular groove 27, and in a preferred embodiment, the annular groove 27 is located at the upper end of the first buckle 261 or the second buckle 262, so that a connection gap between the first housing 20 and the first connector 40 can be effectively sealed, and thus, the waterproof performance of the board end connector 200 can be effectively improved.
In an alternative other embodiment, in order to further enhance the sealing waterproof performance of the board end connector 200, a plurality of annular grooves 27 may be provided at intervals on the outer wall of the first housing 20, and correspondingly, a plurality of sealing plugs 51 may be fixed at intervals on the outer wall of the first housing 20.
An outer flange 28 is also provided at the first bottom end of the first housing 20, the outer flange 28 abutting against the bottom end of the first connector 40.
With further reference to fig. 5, a fourth groove 254 and a fifth groove 255 are formed recessed from the first top end 21 of the first housing toward the inside thereof, a third partition wall is provided between the fourth groove 254 and the fifth groove 255, further, a part of the first pin header slots 23 is located inside the fourth groove 254, and the first pin header slots 23 partition the fourth groove 254 into two sub-grooves. The provision of the fourth and fifth grooves 254, 255 on the first housing 20 helps on the one hand to reduce the use of plastic material and on the other hand to reduce the risk of shrinkage of the plastic material during injection moulding.
In an embodiment of the present invention, there is further provided a wire end connector 300 for use with the board end connector 200, wherein the board end connector 200 is fixed in the first connecting member 40, an opening 12 is provided on the housing 10, the opening 12 is in communication with the first accommodating cavity 41, the first pins 30 are exposed through the opening 12, and the wire end connector 300 can be plugged into the opening 12 to be connected with the board end connector 200.
Referring further to fig. 2, 6 and 7, the wire end connector 300 includes a second housing 60, the second housing 60 is preferably made of a plastic material having corrosion resistance and high temperature resistance, the second housing 60 has a second top end 61 and a second bottom end 62 disposed opposite to each other, and a second pin socket 63 is disposed in the second housing 60, wherein the second pin socket 63 extends from the second top end 61 to the second bottom end 62, and further communicates the second top end 61 with the second bottom end 62 of the second housing 60, and the second pin socket 63 includes a plurality of pin insertion holes, each of which allows one pin to be inserted therein. Wherein the second pin header 63 has a first insertion port 631 at the second bottom end 62 and a second insertion port 632 at the second top end 61, the first insertion port 631 for insertion of the first pin header 30.
The wire end connector 300 further includes a second pin 70, the second pin 70 is made of a metal material and is one or more elongated pins, the pin arrangement is suitable for frequent plugging and unplugging, the first pins 70 are densely arranged, the specific number of pins of the second pin 70 can be 4, 8, 10 or 12, a part of the second pins 70 are inserted into the second pin slot 63 through the second insertion hole 632, and the other part of the second pin 70 is exposed outside the second housing 60. Wherein the first pin 30 is inserted through one end of the second pin slot 63, the second pin 70 is inserted through the other end of the second pin slot 63, and the first pin 30 is electrically connected with the second pin 70.
With further reference to fig. 1, 6 and 9, a second coupling member 80 is provided at the outer side of the case 10, the second coupling member 80 including an open second receiving cavity 81, and the wire end connector 300 is inserted through the open end of the second coupling member 80 and received in the second receiving cavity 81, and the inner contour shape of the second receiving cavity 81 is substantially identical to the outer contour shape of the second coupling member 80.
Further, a locking structure is provided between the wire end connector 300 and the second connector 80 to prevent the wire end connector 300 from being released from the board end connector 200, and specifically, the locking structure includes a plurality of limiting recesses 64 provided on the outer surface of the second housing 60, and a plurality of ribs 82 provided on the inner sidewall of the second connector 80, and the ribs 82 are engaged in the limiting recesses 64.
Further, the locking structure further includes a third buckle 65 disposed on the outer surface of the second housing 60, and a third notch 83 disposed on the second connecting member 80, where the third buckle 65 is clamped in the third notch 83. The second housing 60 includes four mutually connected side surfaces, wherein three side surfaces are respectively provided with a limit notch 64, and the other side surface is provided with a third buckle 65, so that the wire end connector 300 can be stably connected to the second connecting piece 80.
Compared to the prior art, the communication connector needs to be fixedly connected to the case 10 by means of a threaded connection structure, so that the plastic housing of the communication connector needs to be embedded with a bolt structure, and the wire end connector 300 can be clamped with the second connecting piece 80, so that the wire end connector 300 is simpler in structure and faster to assemble.
In the above embodiment, the first connector 40 connected to the inner side of the case 10 is used for plugging the board end connector 200, the second connector 80 connected to the outer side of the case 10 is used for plugging the board end connector 300, and the board end connector 200 can be firmly accommodated in the first accommodating cavity 41 of the first connector 40, the board end connector 300 can be firmly accommodated in the second accommodating cavity 81 of the second connector 80, the first accommodating cavity 41 and the second accommodating cavity 81 are communicated through the opening 12 provided on the case 10, and in a preferred embodiment, the first connector 40, the second connector 80 and the case 10 are integrated into a whole, thereby optimizing the internal structural design of the battery pack.
The foregoing has outlined rather broadly the more detailed description of embodiments of the invention, wherein the principles and embodiments of the invention are explained in detail using specific examples, the above examples being provided solely to facilitate the understanding of the method and core concepts of the invention; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present invention, the present description should not be construed as limiting the present invention.

Claims (15)

1. The utility model provides a board end connector, board end connector is used for being connected with the circuit board of the BMS of battery package, battery package still include the box and set up in the inboard first connecting piece of box, first connecting piece is equipped with first chamber of holding, first chamber of holding is used for acceping board end connector's at least part, its characterized in that, board end connector includes:
the first pin header is provided with a welding end which is used for welding with the circuit board;
a first housing provided with a first pin header slot for receiving at least a portion of the first pin header;
the first shell further comprises at least one fixing column, and the fixing column is used for being fixed in the fixing hole of the circuit board.
2. The board end connector of claim 1, wherein said first housing has oppositely disposed first top and bottom ends ， The fixed column comprises a first fixed column and a second fixed column, the first fixed column is located at one side of the first bottom end, and the second fixed column is located at the other side of the first bottom end.
3. The board end connector of claim 2, wherein the first fixing post is cylindrical and the second fixing post is elliptical.
4. The board end connector of claim 1, wherein said first housing has oppositely disposed first top and bottom ends ， The first housing is provided with a first groove recessed inward from the first bottom end, and the board end connector further comprises a flexible sealing element accommodated in the first groove.
5. The board end connector of claim 4 wherein a portion of said first pin header slots are located within said first recess and a longitudinal spacer is formed between a top end face of said first pin header slots and an open end of said first recess, said longitudinal spacer housing said sealing element.
6. The board end connector of claim 5, wherein said first row of pins is configured to be disposed through said sealing element.
7. The board end connector of any one of claims 1-6, wherein the outer wall of the first housing is provided with an annular groove, the board end connector further comprising a sealing ring received in the annular groove.
8. The board end connector of any one of claims 1-6, wherein the first housing includes a first buckle and a second buckle disposed at intervals, the first connector includes a first notch and a second notch, the first buckle is configured to be engaged with the first notch, and the second buckle is configured to be engaged with the second notch.
9. The board end connector of claim 8 wherein said first housing has oppositely disposed first top and bottom ends ， The first shell comprises a first groove, a second groove and a third groove which are recessed inwards from the first bottom end, the second groove and the third groove are respectively positioned on two sides of the first groove, the first buckle is configured to be bent towards the inside of the second groove, and the second buckle is configured to be bent towards the inside of the third groove.
10. A line end connector for connection with a board end connector inside a battery pack, the board end connector comprising the board end connector according to any one of claims 1 to 9, the battery pack comprising a case and a second connecting member provided outside the case, the second connecting member comprising a second accommodation chamber for accommodating a portion of the line end connector, the line end connector comprising:
the second shell is provided with a second bottom end and a second top end which are oppositely arranged, a second pin arranging slot is further formed in the second shell, a first inserting port is formed in the position, located at the second bottom end, of the second pin arranging slot, a second inserting port is formed in the position, located at the second top end, of the second pin arranging slot, and the first inserting port can be used for inserting a first pin of the board end connector;
the second pin header is accommodated in the second pin header slot through the second insertion port, and one end of the second pin header is electrically connected with the other end of the first pin header.
11. The wire end connector of claim 10, wherein the outer surface of the second housing is provided with a plurality of limiting notches, the inner side wall of the second connector is provided with a plurality of ribs, and the ribs can be clamped in the limiting notches.
12. The line end connector of claim 11, wherein a third buckle is further disposed on an outer side wall of the second housing, a third notch is disposed on a side wall of the second connecting member, the third buckle is engaged with the third notch, the second housing includes four sides, the plurality of limit notches are distributed on three sides of the four sides, and the third buckle is located on another side of the four sides.
13. A communications connector assembly comprising the board end connector of any one of claims 1 to 9 and the wire end connector of any one of claims 10 to 12.
14. A battery pack, the battery pack comprising:
the box body is connected with a first connecting piece on the inner side of the box body, the first connecting piece is provided with a first accommodating cavity, a second connecting piece is connected on the outer side of the box body, and the second connecting piece is provided with a second accommodating cavity;
a BMS including a circuit board;
a board end connector comprising the board end connector of any one of claims 1-9, a portion of the board end connector being received within the first connector, the board end connector comprising a first row of pins, one end of the first row of pins being soldered to the circuit board;
a wire end connector comprising the wire end connector of any one of claims 10-12, a portion of the wire end connector being received within the second connector, the wire end connector comprising a second pin row having one end electrically connected to the other end of the first pin row.
15. The battery pack of claim 14, wherein the first connector, the second connector, and the case are integrally formed.
CN202311288988.1A 2023-10-07 2023-10-07 Board end connector, wire end connector, communication connector assembly and battery pack Pending CN117374623A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311288988.1A CN117374623A (en) 2023-10-07 2023-10-07 Board end connector, wire end connector, communication connector assembly and battery pack

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311288988.1A CN117374623A (en) 2023-10-07 2023-10-07 Board end connector, wire end connector, communication connector assembly and battery pack

Publications (1)

Publication Number Publication Date
CN117374623A true CN117374623A (en) 2024-01-09

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311288988.1A Pending CN117374623A (en) 2023-10-07 2023-10-07 Board end connector, wire end connector, communication connector assembly and battery pack

Country Status (1)

Country Link
CN (1) CN117374623A (en)

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