CN107732607B - Lead frame, connecting assembly, signal sampling device and battery pack - Google Patents
Lead frame, connecting assembly, signal sampling device and battery pack Download PDFInfo
- Publication number
- CN107732607B CN107732607B CN201610664568.2A CN201610664568A CN107732607B CN 107732607 B CN107732607 B CN 107732607B CN 201610664568 A CN201610664568 A CN 201610664568A CN 107732607 B CN107732607 B CN 107732607B
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- China
- Prior art keywords
- circuit board
- connection
- limiting
- busbar
- terminal
- Prior art date
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Links
- 238000005070 sampling Methods 0.000 title claims abstract description 30
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 15
- 239000011889 copper foil Substances 0.000 claims description 11
- 230000000149 penetrating effect Effects 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 11
- 238000009434 installation Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 238000005476 soldering Methods 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 4
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 claims description 3
- 238000001746 injection moulding Methods 0.000 claims description 3
- 230000000452 restraining effect Effects 0.000 description 8
- 101000793686 Homo sapiens Azurocidin Proteins 0.000 description 7
- 230000035939 shock Effects 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 238000006056 electrooxidation reaction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/514—Methods for interconnecting adjacent batteries or cells
- H01M50/516—Methods for interconnecting adjacent batteries or cells by welding, soldering or brazing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R25/00—Coupling parts adapted for simultaneous co-operation with two or more identical counterparts, e.g. for distributing energy to two or more circuits
- H01R25/14—Rails or bus-bars constructed so that the counterparts can be connected thereto at any point along their length
- H01R25/145—Details, e.g. end pieces or joints
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/507—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising an arrangement of two or more busbars within a container structure, e.g. busbar modules
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/521—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the material
- H01M50/522—Inorganic material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4278—Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention discloses a lead frame, a connecting assembly, a signal sampling device and a battery pack. The lead frame comprises a frame main body, a mounting part and a containing groove. The mounting portion is provided on the frame body for mounting a wiring board. The accommodating groove is formed in the frame body and is positioned on one side or two sides of the mounting part for accommodating the bus bars. The lead frame can bear a circuit board, uniformly transmits electric signals passing through the bus bar through the circuit board, replaces the traditional mode of connecting a plurality of single-core wires, realizes orderly connection, and can obtain stable connection performance.
Description
Technical Field
The present invention relates to a connection structure, and more particularly, to a lead frame, a connection assembly, a signal sampling device, and a battery pack.
Background
With the rapid development of electronic products, requirements for a connection structure for realizing electrical connection are also becoming more and more diversified. While the pursuit of stable connection performance is a constant consumer need. In particular, in certain electromechanical products, there is a very high requirement for the safety performance of stable, orderly electrical connections. In a narrow environment such as an automobile engine, reasonable arrangement of a plurality of connection lines plays an important role in achieving safe and stable connection performance. Particularly, with the increasing use of electric vehicles using Battery packs (Battery Pack) as power sources, how to ensure the stable operation of the vehicle engine on the premise of passing large current becomes a serious consideration for designers.
Disclosure of Invention
One of the objectives of the present invention is to overcome the shortcomings of the prior art, and to provide a lead frame, a connection assembly, a signal sampling device and a battery pack, which are orderly, orderly and stable in connection.
In order to achieve the above purpose, the present invention is realized by the following technical scheme:
the invention provides a lead frame. The lead frame comprises a frame main body, a mounting part and a containing groove. The mounting portion is provided on the frame body for mounting a wiring board. The accommodating groove is formed in the frame body and is positioned on one side or two sides of the mounting part for accommodating the bus bars.
Preferably, the lead frame further comprises a connecting terminal, and the connecting terminal and the frame body are embedded injection molding integrated pieces.
Preferably, the connection terminal includes a first connection end portion and a second connection end portion. The first connection end is used for being electrically connected with the circuit board. The second connecting end is integrally connected with the first connecting end and is used for being electrically connected with a busbar.
Preferably, the first connection end portion and the second connection end portion are made of different materials.
Preferably, the connection portions of the first connection end portion and the second connection end portion are embedded and provided in the frame body.
Preferably, the first connecting end part is of a copper structure; the second connecting end part is of an aluminum structure.
Preferably, the connection terminal is a bimetal stamping.
The invention provides a connecting assembly. The connecting assembly comprises a frame main body, a mounting part, a containing groove, a busbar and a circuit board. The mounting portion is provided on the frame body for mounting a wiring board. The accommodating groove is formed in the frame body and is positioned on one side or two sides of the mounting part for accommodating the bus bars. The number of the bus bars is multiple, and the bus bars are accommodated in the accommodating groove. The circuit board is fixedly arranged on the mounting part and is electrically connected with the plurality of bus bars.
Preferably, the inner side wall of the accommodating groove is provided with a limiting buckle. The limiting buckle is matched with the busbar in a clamping way along the depth direction of the accommodating groove so as to limit the busbar.
Preferably, the bottom wall of the accommodating groove is provided with an accommodating through hole in a penetrating manner along the depth direction. The busbar is provided with a battery connecting hole, and the battery connecting hole is communicated with the accommodating through hole and is used for being connected with an electrode of a battery.
Preferably, the connection assembly further comprises a connection terminal. The busbar includes a busbar body and terminal connection pins. The busbar body is used for being connected with a battery. The terminal connecting pin is arranged on the busbar main body in a protruding mode and is electrically connected with the connecting terminal.
Preferably, the terminal connecting pin includes a setting portion and a connecting portion. The arrangement portion is arranged on the busbar main body in a protruding manner. The connecting portion extends continuously from the setting portion and is connected with the connecting terminal in a contact manner.
Preferably, the frame body is provided with a busbar limiting member. The busbar limiting piece is in limiting fit with the terminal connecting pin.
Preferably, the connecting part is provided with a limiting through hole of the connecting part. The busbar limiting piece comprises a busbar limiting column and a busbar limiting cap. The bus bar limiting post is arranged on the upper surface of the frame body in a protruding mode, penetrates through the connecting portion limiting through hole and extends to protrude out of the upper surface of the connecting portion. The busbar limiting cap is arranged at the top end of the busbar limiting column, and the radial size of the busbar limiting cap is larger than the aperture of the connecting part limiting through hole so as to be used for limiting the connecting pins of the busbar.
Preferably, the busbar stop includes a stop wall. The limiting walls are at least two, and the limiting walls are arranged on two sides of the connecting part in parallel in an extending mode and are used for limiting connecting pins of the busbar.
Preferably, the mounting portion is a mounting groove. The busbar limiting piece comprises a limiting notch which is communicated with the mounting part and the accommodating groove. The setting part extends from the accommodating groove to the inside of the mounting part through the limiting notch.
Preferably, the connection assembly further comprises a connection terminal. The connecting terminal comprises a first connecting end part and a second connecting end part. The first connection end is electrically connected with the circuit board. The second connecting end part is electrically connected with the first connecting end part and the connecting part of the busbar respectively.
Preferably, the first connection end is welded with the copper foil circuit of the circuit board.
Preferably, the second connection end is connected with the connection part of the busbar by laser welding.
Preferably, the first connection end portion and the second connection end portion are made of different materials.
Preferably, the busbar is an integral piece of aluminum material. The first connecting end part is of a copper structure, and is connected with the copper foil circuit of the circuit board. The second connecting end part is of an aluminum structure.
Preferably, the connecting terminal and the frame body are an embedded injection molding integrated piece.
Preferably, the connection portions of the first connection end portion and the second connection end portion are embedded and provided in the frame body.
Preferably, the frame body has a terminal sealing structure. The terminal sealing structure seals a connection portion of the first connection end portion and the second connection end portion.
Preferably, the frame body is provided with a circuit board limiting member in a protruding manner. The circuit board limiting piece is in limiting fit with the circuit board.
Preferably, the circuit board is provided with a circuit board limiting through hole in a penetrating manner along the thickness direction. The circuit board limiting piece comprises a circuit board limiting column and a circuit board limiting cap. The circuit board limiting post is arranged on the upper surface of the frame main body in a protruding mode, the circuit board limiting post penetrates through the circuit board limiting through hole, and the top end of the circuit board limiting post extends to protrude out of the upper surface of the circuit board. The circuit board limiting cap is arranged at the top end of the circuit board limiting column, and the radial size of the circuit board limiting cap is larger than the aperture of the circuit board limiting through hole.
The invention also provides a signal sampling device. The signal sampling device comprises a connecting component and a signal output device. The signal output device is electrically connected with the circuit board.
Preferably, the signal output device includes a flexible flat cable or a flexible circuit board.
Preferably, the signal output device further comprises an output connection terminal, and two ends of the output connection terminal are respectively connected with the circuit board and the flexible flat cable.
Preferably, the circuit board is provided with an output connection through hole in a penetrating manner along the thickness direction. The output connection terminal passes through the output connection through hole and is connected with the copper foil circuit of the circuit board.
Preferably, the output connection terminal and the copper foil circuit of the circuit board are wave soldering.
Preferably, the signal output device further comprises a connection housing. The connection housing is disposed on the circuit board or the frame body. The connecting shell is provided with a mounting cavity in a penetrating way. The output connection terminal is accommodated in the mounting cavity, and one end of the output connection terminal extends out of the mounting cavity to be electrically connected with the circuit board.
Preferably, the signal output device further comprises a mounting buckle. The installation buckle is arranged at the top end of the connecting shell. And the circuit board is provided with a clamping through hole. The installation buckle passes through the clamping through hole and is matched with the upper surface of the circuit board in a clamping way.
The invention also provides a battery pack. The battery pack includes a plurality of batteries and the signal sampling device according to any one of the preceding claims. The plurality of cells each have an electrode that is electrically connected to the bus bar. The signal sampling device collects voltage signals of the plurality of batteries. The signal output device is used for transmitting the voltage signal to a battery management system.
Compared with the prior art, the lead frame can bear a circuit board, uniformly transmit electric signals passing through the bus bar through the circuit board, replace the traditional mode of connecting a plurality of single-core wires, realize orderly connection and obtain stable connection performance. The lead frame improves the limit and shock resistance of the circuit board by arranging the circuit board limit part, and can obtain stable connection performance in severe vibration environments (such as an automobile engine). Correspondingly, the lead frame improves the limiting and anti-seismic performance of the bus bar by arranging the bus bar limiting piece, so that the stable connection performance of the bus bar is improved. Therefore, when the signal sampling device adopts the connecting component to sample the voltage and temperature signals of the battery, the accuracy of the sampled signals and the timeliness of signal transmission can be ensured. The battery pack adopts the signal sampling device, so that the stability of the performance can be ensured, and the service life can be prolonged.
Drawings
Fig. 1 is a schematic structural diagram of a lead frame according to the present invention.
Fig. 2 is an enlarged schematic view of the lead frame shown in fig. 1 at H.
Fig. 3 is a schematic structural diagram of a connection assembly according to the present invention.
Fig. 4 is an exploded perspective view of the connection assembly shown in fig. 3.
Fig. 5 is a front view of the connection assembly shown in fig. 3.
Fig. 6 is a cross-sectional view of the connection assembly shown in fig. 5 taken along line A-A.
Fig. 7 is an enlarged schematic view of the connection assembly at B shown in fig. 6.
Fig. 8 is a schematic view of the bus bar shown in fig. 4.
Fig. 9 is a schematic structural view of the circuit board shown in fig. 4.
Fig. 10 is a schematic structural view of the connection terminal shown in fig. 4.
Fig. 11 is a schematic structural diagram of a signal sampling device provided by the present invention.
Fig. 12 is an exploded perspective view of the signal sampling device shown in fig. 11.
Fig. 13 is a front view of the signal sampling apparatus shown in fig. 11.
Fig. 14 is a cross-sectional view of the signal sampling device shown in fig. 13 along line C-C.
Fig. 15 is an enlarged schematic diagram of the signal sampling device shown in fig. 14 at D.
Detailed Description
The invention is described in detail below with reference to the attached drawing figures:
embodiment one:
please refer to fig. 1, which illustrates a leadframe 101 according to the present invention. The lead frame 101 includes a frame body 10, a mounting portion 20, and a receiving groove 30. The mounting portion 20 is provided on the frame body 10 for mounting a wiring board 60 described below. The accommodating groove 30 is formed on the frame body 10, and is used for accommodating a busbar 50 described below.
The shape and structure of the frame body 10 are selected according to the application requirements. In the present embodiment, the frame body 10 has a substantially rectangular plate shape in order to fully utilize space and improve material utilization. The frame body 10 is used for carrying a circuit board 60 and a bus bar 50 described below.
Referring to fig. 2, in order to improve the sealing performance of the connection terminals described below to avoid corrosion, the frame body 10 has a terminal sealing structure 13. The terminal sealing structure 13 is used for wrapping the bimetal connecting part of the connecting terminal, so that electrochemical corrosion caused by contact of the bimetal and water vapor is avoided. In this embodiment, in order to improve the sealing performance and simplify the manufacturing process, the terminal sealing structure 13 is injection molded after the connection terminal is inserted into the mold.
The mounting portion 20 is provided on the frame body 10. In the present embodiment, the mounting portion 20 is provided on the upper surface of the frame body 10. The shape and structure of the mounting portion 20 may be any shape and structure as long as it can limit and mount the corresponding circuit board 60, and may be, for example, a slot, a buckle, a clip, or the like. In this embodiment, the mounting portion 20 is a mounting groove having a shape and size matching those of the corresponding circuit board 60. The mounting groove is opened on the upper surface of the frame body 10, so that the circuit board 60 is mounted and dismounted in the up-down direction of the frame body 10. The mounting portion 20 can restrain the wiring board 60 in a direction parallel to the surface of the frame body 10.
In order to improve the limiting performance of the circuit board 60, the frame body 10 is provided with a circuit board limiting member 22. The circuit board limiting member 32 may be a slot, a buckle, or even an adhesive. In this embodiment, in order to further improve the limiting performance of the circuit board 60 in the up-down direction of the frame body 10 (i.e., the direction perpendicular to the surface of the frame body 10), the circuit board limiter 22 includes a circuit board limiting post 25 and a circuit board limiting cap 27. In this embodiment, the circuit board limiting cap 27 is a heat rivet. The stopper posts 25 are provided protruding on the upper surface of the frame body 10. The height of the limit posts 25 is equal to or greater than the thickness of the circuit board 60. The stopper posts 25 may penetrate the circuit board 60 to further restrict the circuit board 60 in a direction parallel to the upper surface of the frame body 10. The circuit board limiting cap 27 is arranged at the top end of the circuit board limiting post 25. The radial dimension of the circuit board stopper posts 25 is larger than the aperture of the through holes on the circuit board 60, thereby restricting the circuit board 60 in a direction perpendicular to the upper surface of the lead frame 10.
In order to provide a corresponding installation space for connection or installation of other devices, a circuit board 60 may be disposed at a distance from the upper surface of the frame body 10. Accordingly, the frame body 10 is provided with a support column protruding therefrom. The support posts are used to support the circuit board 60. In this embodiment, the number of the support columns is four, and the four support columns are uniformly disposed around the limit column 25.
The accommodating groove 30 is formed on the frame body 10. In this embodiment, the accommodating groove 30 is formed on the upper surface of the frame body 10. The receiving groove 30 is located at one side or both sides of the mounting part 20, so that a plurality of bus bars 50 can be simultaneously connected with the circuit board 60. In this embodiment, in order to fully utilize the connection performance of the circuit board 60 and make full use of the installation space, the accommodating grooves 30 are arranged in two rows, and the two rows of accommodating grooves 30 are respectively arranged at two sides of the installation portion 20. Each row of the accommodating grooves 30 extends along the length direction of the circuit board 60. The number of the accommodating grooves 30 is selected according to the application requirements. The specific shape, structure and size of the accommodating groove 30 are only required to be enough to accommodate the corresponding busbar 50. In this embodiment, the accommodating groove 30 is a substantially rectangular groove.
In order to enhance the restraining performance of the bus bar 50 in the depth direction of the receiving groove 30 (i.e., the direction perpendicular to the upper surface of the frame body 10), the bus bar restraining snap 31 is provided on the inner sidewall of the receiving groove 30. The bus bar limiting buckle 31 is used for being in clamping fit with the bus bar 50 along the depth direction of the accommodating groove 30, so that the bus bar 50 is further limited in the accommodating groove 30. The specific number and the relative arrangement positions of the bus bar limiting buckles 31 can meet the limitation of the bus bar 50. In this embodiment, one of the bus bar limiting buckles 31 is disposed on two side walls of each of the accommodating grooves 30, and the two bus bar limiting buckles 31 are disposed in a staggered manner along the length direction of the circuit board 60, so as to more firmly limit the bus bar 50.
In order to facilitate connection of the busbar 50 with the battery to be tested, the bottom wall of the accommodating groove 30 is provided with an accommodating through hole 33 along the depth direction. The receiving through-holes 33 can receive battery electrodes connected to the bus bar 50, which will be described later, thereby simplifying the structure and saving connection lines. The specific shape and size of the receiving through hole 33 are selected according to the specific installation requirements. In this embodiment, the accommodating through hole 33 is a substantially rectangular through hole.
In order to enhance the function of limiting the bus bar 50, the frame body 10 is provided with a bus bar limiter 32. In this embodiment, the bus bar stopper 32 includes a bus bar stopper post 35 in order to enhance the stopper performance of the terminal connection pin 54 of the bus bar 50. The bus bar stopper 35 is protrusively provided on the upper surface of the frame body 10 for penetrating the terminal connection pin, thereby restricting the terminal connection pin in parallel to the upper surface of the frame body 10, and thus improving vibration resistance of the terminal connection pin. The height of the bus bar limit posts 35 is greater than or equal to the thickness of the terminal connection pins. The radial dimension of the bus bar limiting post 35 is less than or equal to the aperture of the connecting portion limiting through hole 545 of the terminal connecting pin 54.
In order to enhance the restraining and shock-resistant performance of the terminal connection pins in the axial direction of the busbar restraining post 35 (i.e., the direction perpendicular to the upper surface of the frame body 10), the busbar restraining member 32 further includes a busbar restraining cap 37. In this embodiment, the busbar limiting cap 37 is a hot rivet. The busbar limiting cap 37 is disposed at the top end of the busbar limiting post 35. The radial dimension of the busbar limiting cap 37 is larger than the aperture of the through hole on the terminal connecting pin, so that the terminal connecting pin is limited. The bus bar stopper cap 37 may have a specific shape that satisfies the limitation of the terminal connection pins, and may be, for example, a triangular protrusion or a flat protrusion extending in the radial direction of the bus bar stopper post 35. In this embodiment, the busbar limiting cap 37 is substantially yurt-shaped.
In order to enhance the spacing, shock resistance, and reduce the gap for assembling the circuit board 60 to the lead frame 101 along the length of the circuit board 60, the bus bar limiter 32 further includes a limiting notch 38. The limiting notch 38 is formed on the side wall of the accommodating groove 30 and is communicated with the mounting groove of the mounting portion 20. The limiting notch 38 is configured to receive a setting portion 541 of the terminal connecting pin 54, so that the setting portion 541 extends from the receiving groove 30 into the mounting portion 20.
To further enhance the restraining and shock-resistant performance of the terminal connection pins 54, the busbar restraint 32 further includes a restraining wall 39 provided on the frame body 10. The stopper wall 39 is shaped as a vertical wall protruding from the upper surface of the frame body 10. The number of the limiting walls 39 is at least two. The limiting wall 39 extends in the longitudinal direction of the frame body 10. The at least two limiting walls 39 are arranged in parallel and spaced apart such that the terminal connecting pin is limited between the at least two limiting walls 39.
In order to enhance the mechanical strength of the lead frame 101 and save manufacturing process, in the present embodiment, the lead frame 101 is an injection molded part.
Embodiment two:
please refer to fig. 3-5, which illustrate a connecting assembly 102 according to the present invention. The connection assembly 102 includes the bus bar 50 and the circuit board 60. The busbar 50 is accommodated in the accommodation groove 30. The circuit board 60 is disposed on the mounting portion 20 and is electrically connected to the bus bar 50.
Referring to fig. 6 to 8, the bus bar 50, which is a connector, has a capability of stably and safely transmitting a large current, is named as bus bar. In this embodiment, the busbar 50 is made of aluminum as a single piece. The shape and structure of the bus bar 50 may be such that the corresponding connection performance is satisfied.
In this embodiment, the bus bar 50 includes a bus bar body 52 and terminal connection pins 54. The terminal connection pins 54 are provided protruding on the bus bar 52. The busbar body 52 and the terminal connection pins 54 are each disposed to extend along a plane parallel to the upper surface of the lead frame 10. The busbar body 52 has a substantially rectangular plate shape, and a central portion of the rectangular plate shape has an arch. In this embodiment, the busbar body 52 is accommodated in the accommodating groove 30, and the busbar body 52 is in a limit fit with the busbar limiting buckle 31. In order to facilitate the convenient and stable connection with the battery to be tested, the busbar body 52 is provided with a battery connection hole 521. In this embodiment, the battery connection hole 521 is formed as a through hole penetrating in the thickness direction of the bus body 52. The battery connection hole 521 may be sleeved on an electrode of the battery, and a firm connection is achieved by welding. The number of the battery connection holes 521 is selected according to the connection requirements. In this embodiment, the number of the battery connection holes 521 is two.
The terminal connection pins 54 are electrically connected to connection terminals 70 described below. The specific shape and configuration of the terminal connection feet 54 is selected according to the mounting and connection requirements. In this embodiment, the terminal connecting leg 54 includes a mounting portion 541 and a connecting portion 543. The setting portion 541 is provided on the busbar body 52 perpendicularly to the extending direction of the wiring board 60. The connection portion 543 is provided on the setting portion 541 in parallel to the extending direction of the wiring board 60, and is for direct electrical connection with the connection terminal 70. That is, the terminal connecting leg 54 is substantially L-shaped. In order to improve the shock resistance of the connection portion 543 after being connected to the connection terminal 70 as much as possible, the connection portion 543 is provided with a connection portion limiting through hole 545 in a penetrating manner in a thickness direction. The connection part limiting through holes 545 are sleeved on the bus bar limiting posts 35 so as to limit each other in a direction parallel to the upper surface of the lead frame 10. The connection portion 543 is opposite to the bus bar stopper cap 37 at the periphery of the connection portion stopper through hole 545 so as to be stopped from each other in a direction perpendicular to the upper surface of the lead frame 10. Further, the connecting portion 543 is disposed between the at least two limiting walls 39, so that two side walls of the connecting portion 543 are blocked by the limiting walls 39, thereby improving the limiting performance of the connecting portion 543 and the anti-seismic and uniform stress performance of the connecting portion 543.
Referring to fig. 9, the circuit board 60, also called a circuit board, is named Printed Circuit Board. The circuit board 60 may be provided with electronic components, in particular patch electronic components, and form a stable electrical connection with the electronic components. For example, a sensor or a corresponding device for detecting current, temperature may be provided on the circuit board 60. The shape and configuration of the circuit board 60 is selected according to the application requirements. In the present embodiment, the circuit board 60 has a substantially rectangular plate shape. The wiring board 60 is provided on the mounting portion 20 of the lead frame 101. In the present embodiment, the circuit board 60 is disposed at the middle of the frame body 10, so that the two rows of the bus bars 50 at both sides are uniformly arranged. In order to further enhance the stability and limit performance, the circuit board 60 is provided with a circuit board limit through hole 62. The circuit board limiting through hole 62 is sleeved on the circuit board limiting post 25, so as to improve the limiting performance of the circuit board 60 along the direction parallel to the upper surface of the frame body 10. The circuit board 60 is opposite to or connected with the circuit board limiting cap 27 at the periphery of the circuit board limiting through hole 62, so as to improve the limiting performance of the circuit board 60 along the direction perpendicular to the upper surface of the frame body 10. The number and local arrangement of the circuit board limiting through holes 62 are selected as required. In this embodiment, the number of the circuit board through holes 62 is two, and each row has three circuit board limiting through holes 62, and each row of circuit board limiting through holes 62 is arranged along the length direction of the circuit board 60.
The circuit board 60 is further provided with terminal connection through holes 64 in order to facilitate stable connection with the connection terminals 70 described below. The terminal connection through-hole 64 penetrates from the upper surface to the lower surface of the wiring board 60. The number, arrangement and aperture of the terminal connecting through holes 64 are matched with those of the corresponding connecting terminals 70. In this embodiment, the terminal connecting holes 64 are arranged in two rows. Each row of the terminal connection through holes 64 is arranged along the length direction of the wiring board 60. The number of the connection terminal through holes 64 in each row is 7. And the two rows of the terminal connection through holes 64 are arranged rotationally symmetrically.
In order to facilitate the connection with the output connection terminal 84, the end portion of the circuit board 60 is provided with an output connection through hole 66, so that the output connection terminal 84 can be soldered with the copper foil circuit of the circuit board 60 in a wave soldering manner after passing through. The output connection through-hole 66 penetrates the upper and lower surfaces of the wiring board 60. The number, arrangement and aperture of the output connection vias 66 are matched with the corresponding output connection terminals 84. In this embodiment, the output connection through holes 66 are arranged in two rows. The two rows of the output connection through holes 66 each extend in the width direction of the wiring board 60. The number of output connection vias 66 per row is 11. The output connection through holes 66 are each provided protruding from the frame body 10, thereby facilitating connection with the output connection terminals 84.
The circuit board 60 is further provided with a card through hole 68 for easy attachment to and detachment from the connection housing 86 described below. The snap-fit through hole 68 is used to pass through the connection mounting buckle 88 of the connection housing 86, so that the connection mounting buckle 88 is blocked from the upper surface of the circuit board 60. The clamping through holes 68 penetrate through the upper and lower surfaces of the circuit board 60. The number, arrangement and aperture of the snap-fit through holes 68 are matched to the corresponding connector mounting snaps 88. In this embodiment, two clamping through holes 68 are provided. The two card through holes 68 are provided at both ends of the two rows of the output connection through holes 66 in the extending direction, respectively.
Referring to fig. 10, in order to facilitate the connection between the bus bar 50 and the circuit board 60, the connection assembly 102 further includes a connection terminal 70. The connection terminals 70 are connected to the bus bar 50 and the circuit board 60, respectively. The connection terminal 70 includes a first connection end 71 and a second connection end 72. The first connection end 71 is L-shaped. The second connection portion 72 has a straight plate shape. The first connection end portion 71 and the second connection end portion 72 are L-shaped. The first connection end 71 is connected to the wiring board row 60, and the second connection end 72 is connected to the bus bar 50. In order to facilitate the connection of the same metal material to obtain stable connection performance, the connection terminal 70 is made of a bimetal material. To enhance the stability, the connection terminals 70 are bi-metal stamping. That is, the connection terminal 70 is made of two different metal materials into one piece by punching. Specifically, the second connection end 72 of the connection terminal 70 is made of aluminum material to be connected with the bus bar 50 of aluminum; the first connection end portion 71 of the connection terminal 70 is made of copper material to be connected with the copper foil line of the circuit board 60. That is, the connection terminal 70 not only avoids corrosion caused by the potential difference of the connection parts of different metals, but also enables the bus bar 50 of different metals to be firmly connected with the circuit board 60 by the conversion of the bimetal. In order to further prevent the electrochemical corrosion of the connection terminal 70, the connection portion of the first connection end portion 71 and the second connection end portion 72 of the connection terminal 70 is wrapped by the terminal sealing structure, thereby forming a seal for the bimetal connection portion. In order to enhance the stable assembling and sealing corrosion resistance, the connecting terminal 70 and the frame body 10 are integrated by insert molding. That is, the connection terminal 70 is previously placed in an injection mold and then injection-molded into the frame body 10 such that the connection terminal 70 is integrated with the frame body 10. In order to avoid chemical corrosion caused by the potential difference of the connecting parts made of different metal materials, the connecting parts of the first connecting end part 71 and the second connecting end part 72 are embedded in the frame body 10.
Embodiment III:
please refer to fig. 11 to 15, which illustrate a signal sampling apparatus 103 according to the present invention. The signal sampling device 103 includes the connection unit 102 and the signal output device 80 according to the second embodiment. The signal output device 80 is connected to the circuit board 60 to transmit the sampling signal transmitted on the circuit board 60 to the signal output device 80.
The signal output device 80 may be any medium that can be electrically conductive, such as a single conductor. In the present embodiment, the signal output device 80 includes a flexible flat cable 82 (the english name of the flexible flat cable is "Flexible Flat Circuit", which is simply referred to as FFC). It is conceivable that the flexible flat cable 82 includes a plurality of connection lines, and that the plurality of connection lines are arranged regularly. The flexible flat cable 82 has a flat structure, can be bent at will, and can be adapted to a narrow space. When the flexible flat cable 82 is applied to the battery pack, space can be saved, thereby reducing the volume of the battery pack. Of course, the flexible flat cable 82 may be replaced by a flexible circuit board (the english name of the flexible circuit board is "Flexible Printed Circuit Board", which is simply called FPC). The flexible flat cable 82 may be connected to an industrial control computer to output corresponding sampled signals to the industrial control computer for processing.
To further enhance the connection performance, the signal output device 80 further includes an output connection terminal 84. The output connection terminals 84 are connected to the wiring board 60 and the flexible flat cable 82, respectively. The output connection terminal 84 is inserted into the output connection through hole 66 from the lower surface side of the wiring board 60, and protrudes to the upper surface side of the wiring board 60. Wave soldering is performed between the output connection terminals 84 and the corresponding copper foil circuits on the upper surface of the circuit board 60. In this embodiment, the output connection terminals 84 are arranged in two rows. The two rows of output connection terminals 84 are arranged in the width direction of the wiring board 60, respectively. Each row of the output connection terminals 84 is connected to one of the flexible flat cables 82, respectively.
In order to improve the stable connection performance of the output connection terminal 84 and the circuit board 60, the signal output device 80 further includes a connection housing 86. The connection housing 86 is provided with a connection cavity 861. The connecting cavity 861 is formed to penetrate along the up-down direction of the frame body 10. The output connection terminal 84 is inserted from the top end of the connection through-chamber 861. The flexible flat cable 82 is inserted from the bottom end of the connection through-cavity 861. The output connection terminals 84 are connected to the flexible flat cable 82 in the through-hole 861.
In order to facilitate the disassembly and assembly of the connection housing 86 and the circuit board 60, the connection housing 86 is provided with a connection mounting buckle 88. The connection mounting buckle 88 passes through the clamping through hole 68 of the circuit board 60 and is matched with the circuit board 60 in a clamping way, so that the connection housing 86 and the circuit board 60 are connected integrally. The number and specific arrangement of the connection mounting clips 88 is selected as desired. In the present embodiment, the number of the connection mounting buckles 88 is two, and the connection mounting buckles are provided at both ends of the connection housing 86 in the width direction of the circuit board 60.
Embodiment four:
the present invention also provides a battery pack, such as an automobile battery pack (not shown). The battery pack includes the signal sampling device 103 and a battery (not shown) according to the third embodiment.
The electrodes of the battery extend into the battery connection holes 521 of the bus bar 50 and are laser welded with the bus bar 50, thereby achieving electrical connection. The signals and specific parameters of the battery are selected according to the driving of the corresponding electric equipment (such as an automobile).
In operation, the signal sampling device 103 collects the voltage signal of the battery. The signal output device 80 transmits the voltage signal to a battery management system (Battery Management System, abbreviated as BMS).
It is conceivable that the electrodes of the battery may also be referred to as cells.
It should be noted that, the terms "upper" and "lower" are used in the present invention as relative terms, and are merely based on the drawings to describe specific orientations of the components, and do not limit the scope of protection.
The above is only a preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions or improvements within the spirit of the present invention are intended to be covered by the claims of the present invention.
Claims (27)
1. A connection assembly, comprising:
a frame body;
a mounting portion provided on the frame body for mounting a wiring board;
the accommodating groove is formed in the frame main body and is positioned at one side or two sides of the mounting part for accommodating the bus bars;
the plurality of bus bars are accommodated in the accommodating groove; and
The circuit board is fixedly arranged on the mounting part and is electrically connected with the plurality of bus bars, an output connecting through hole extending along the width direction of the circuit board is formed at the end part of the circuit board, and the output connecting through hole is configured to protrude out of the frame main body;
the circuit board limiting piece is arranged on the frame main body in a protruding mode and is in limiting fit with the circuit board; and is also provided with
Wherein, protruding the setting of frame main part is provided with the busbar locating part.
2. The connection assembly of claim 1, wherein:
a limiting buckle is arranged on the inner side wall of the accommodating groove;
the limiting buckle is matched with the busbar in a clamping way along the depth direction of the accommodating groove so as to limit the busbar.
3. The connection assembly of claim 1, wherein:
the bottom wall of the accommodating groove is provided with an accommodating through hole in a penetrating manner along the depth direction;
the busbar is provided with a battery connecting hole, and the battery connecting hole is communicated with the accommodating through hole and is used for being connected with an electrode of a battery.
4. The connection assembly of claim 1, further comprising a connection terminal; the bus bar includes:
a bus bar body for connection with a battery;
and the terminal connecting pin is arranged on the busbar main body in a protruding mode and is electrically connected with the connecting terminal.
5. The connection assembly of claim 4, wherein the terminal connection leg comprises:
a setting portion protruding on the busbar body;
and a connection part continuously extending from the setting part and contacting and connecting with the connection terminal.
6. The connection assembly of claim 5, wherein:
the busbar limiting piece is in limiting fit with the terminal connecting pin.
7. The connection assembly of claim 6, wherein,
the connecting part is provided with a connecting part limiting through hole;
the busbar limiting piece includes:
the bus bar limiting column is arranged on the upper surface of the frame main body in a protruding mode, penetrates through the connecting part limiting through hole and extends to protrude out of the upper surface of the connecting part; and
The busbar limit cap is arranged at the top end of the busbar limit column, and the radial size of the busbar limit cap is larger than the aperture of the connecting part limit through hole so as to be used for limiting the connecting pins of the busbar.
8. The connection assembly of claim 6, wherein:
the busbar limiting piece comprises a limiting wall;
the limit walls are at least two, and extend in parallel at two sides of the connecting part so as to limit the terminal connecting pins of the busbar.
9. The connection assembly of claim 6, wherein:
the mounting part is a mounting groove;
the busbar limiting piece comprises a limiting notch which is communicated with the mounting part and the accommodating groove;
the setting part extends from the accommodating groove to the inside of the mounting part through the limiting notch.
10. The connection assembly of claim 5, wherein: the connection assembly further includes a connection terminal including:
a first connection end portion electrically connected to the wiring board;
and the second connecting end part is electrically connected with the first connecting end part and the connecting part of the busbar respectively.
11. The connection assembly of claim 10, wherein: the first connecting end part is connected with the copper foil circuit of the circuit board in a welding way.
12. The connection assembly of claim 10, wherein: the second connecting end part is connected with the connecting part of the busbar by laser welding.
13. The connection assembly of claim 10, wherein: the first connecting end part and the second connecting end part are made of different materials.
14. The connection assembly of claim 13, wherein: the busbar is an aluminum integrated piece; the first connecting end part is of a copper structure and is connected with the copper foil circuit of the circuit board;
the second connecting end part is of an aluminum structure.
15. The connection assembly of claim 13, wherein: the connecting terminal and the frame body are embedded injection molding integrated pieces.
16. The connection assembly of claim 15, wherein: the connecting parts of the first connecting end part and the second connecting end part are embedded and arranged in the frame main body.
17. The connection assembly of claim 13, wherein:
the frame body has a terminal sealing structure;
the terminal sealing structure seals a connection portion of the first connection end portion and the second connection end portion.
18. The connection assembly of claim 1, wherein:
the frame main body is provided with support columns in a protruding mode, and the support columns are used for supporting the circuit board, so that the circuit board can be arranged with the upper surface of the frame main body at intervals.
19. The connection assembly of claim 1, wherein:
the circuit board is provided with a circuit board limiting through hole in a penetrating manner along the thickness direction;
the circuit board limiting piece includes:
the circuit board limiting column is arranged on the upper surface of the frame main body in a protruding mode, penetrates through the circuit board limiting through hole, and extends to protrude out of the upper surface of the circuit board from the top end of the circuit board limiting column; and
The circuit board limiting cap is arranged at the top end of the circuit board limiting column, and the radial size of the circuit board limiting cap is larger than the aperture of the circuit board limiting through hole.
20. A signal sampling device comprising a connection assembly according to any one of claims 1 to 19 and a signal output device; the signal output device is electrically connected with the circuit board.
21. The signal sampling device of claim 20, wherein: the signal output device includes a flexible flat cable or a flexible circuit board.
22. The signal sampling device of claim 21, wherein: the signal output device further comprises an output connecting terminal, and two ends of the output connecting terminal are respectively connected with the circuit board and the flexible flat cable.
23. The signal sampling device of claim 22, wherein:
the circuit board is provided with the output connecting through hole in a penetrating way along the thickness direction;
the output connection terminal passes through the output connection through hole and is connected with the copper foil circuit of the circuit board.
24. The signal sampling device of claim 23, wherein: and the output connection terminal and the copper foil circuit of the circuit board are in wave soldering.
25. The signal sampling device of claim 23, wherein the signal output device further comprises a connection housing;
the connecting shell is arranged on the circuit board or the frame main body;
the connecting shell is provided with a mounting cavity in a penetrating way;
the output connection terminal is accommodated in the mounting cavity, and one end of the output connection terminal extends out of the mounting cavity to be electrically connected with the circuit board.
26. The signal sampling device of claim 25, wherein the signal output device further comprises a mounting clip;
the mounting buckle is arranged at the top end of the connecting shell;
the circuit board is provided with a clamping through hole;
the installation buckle passes through the clamping through hole and is matched with the upper surface of the circuit board in a clamping way.
27. A battery pack, comprising: a plurality of batteries and a signal sampling device as claimed in any one of claims 20 to 26;
the plurality of cells each having an electrode, the electrode being electrically connected to the bus bar;
the signal sampling device collects voltage signals of the plurality of batteries;
the signal output device is used for transmitting the voltage signal to a battery management system.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610664568.2A CN107732607B (en) | 2016-08-12 | 2016-08-12 | Lead frame, connecting assembly, signal sampling device and battery pack |
| PCT/IB2017/054900 WO2018029639A1 (en) | 2016-08-12 | 2017-08-11 | Lead frame, connection assembly, signal sampling device and battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610664568.2A CN107732607B (en) | 2016-08-12 | 2016-08-12 | Lead frame, connecting assembly, signal sampling device and battery pack |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107732607A CN107732607A (en) | 2018-02-23 |
| CN107732607B true CN107732607B (en) | 2024-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610664568.2A Active CN107732607B (en) | 2016-08-12 | 2016-08-12 | Lead frame, connecting assembly, signal sampling device and battery pack |
Country Status (2)
| Country | Link |
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| CN (1) | CN107732607B (en) |
| WO (1) | WO2018029639A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108258168A (en) * | 2018-03-21 | 2018-07-06 | 湖南金杯新能源发展有限公司 | Square electric cell module |
| CN108511655B (en) * | 2018-05-24 | 2021-04-13 | 深圳市科陆电子科技股份有限公司 | Soft packet of power battery module |
| JP7029645B2 (en) * | 2018-10-02 | 2022-03-04 | 株式会社オートネットワーク技術研究所 | Flexible printed boards, wiring members, power storage modules and connection modules |
| CN109768447A (en) * | 2019-01-02 | 2019-05-17 | 南京创源天地动力科技有限公司 | A kind of power battery pack sampling harness |
| US20220223980A1 (en) * | 2019-05-22 | 2022-07-14 | Sanyo Electric Co., Ltd. | Bus bar plate |
| CN110556499A (en) * | 2019-09-16 | 2019-12-10 | 江苏塔菲尔新能源科技股份有限公司 | Processing method of collecting piece and busbar connecting structure and connecting structure |
| CN113067087B (en) * | 2019-12-31 | 2022-08-09 | 比亚迪股份有限公司 | Battery pack and vehicle with same |
| KR20220001989A (en) * | 2020-06-30 | 2022-01-06 | 주식회사 엘지에너지솔루션 | Battery Module, Battery Pack Having the Same, and Vehicle |
| DE102020209164B4 (en) | 2020-07-21 | 2022-03-10 | Vitesco Technologies Germany Gmbh | Ladder frame for accommodating contact elements, battery with ladder frame |
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Also Published As
| Publication number | Publication date |
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| WO2018029639A1 (en) | 2018-02-15 |
| CN107732607A (en) | 2018-02-23 |
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