CN213845726U - Connecting assembly - Google Patents

Abstract

The utility model provides a coupling assembling for electric connection is between battery package and a battery management system, coupling assembling includes circuit board, a plurality of conductive terminal, a plurality of wire and connector, conductive terminal be for with a plurality of battery core electric connection in the battery package, the one end of circuit board with conductive terminal elasticity links to each other, the other end with the first end electric connection of wire links to each other, the connector connect in on the wire with the relative second end that sets up of first end with the battery management system docks mutually. The utility model discloses coupling assembling can make being connected between battery package and the battery management system simple, convenient and can stably gather the signal.

Description

Connecting assembly

Technical Field

The utility model relates to a coupling assembling.

Background

Electric vehicles have become the development direction of the automobile industry as new energy vehicles. The battery pack is an important energy source of the electric vehicle, and monitoring of various performances of the battery pack is particularly important. The electric automobiles are all provided with battery management systems for monitoring the safe operation of the batteries, and the battery management systems are mainly used for monitoring the voltage of a battery core of a battery pack, the temperature of the battery core, energy balance, heat management, the total voltage of the battery pack, the total current of the battery pack, data analysis, voice alarm and the like; accordingly, the related data of each function needs to be collected, and at this time, a large number of connectors and transmission lines need to be used for collecting and transmitting the related data, so that all the space in the battery pack is occupied by the transmission lines and the like. Therefore, the volume and the weight of the battery pack are increased, the wiring is troublesome, the safety performance is low, and the energy consumption and the cost are correspondingly increased.

In view of the above, there is a need for an improved connecting assembly to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a can make be connected simple, convenient and can stably gather the coupling assembling of signal between battery package and the battery management system.

For the above-mentioned utility model purpose, the utility model provides a coupling assembling for electric connection is between battery package and a battery management system, coupling assembling includes circuit board, a plurality of conductive terminal, a plurality of wire and connector, conductive terminal be for with a plurality of battery core electric connection in the battery package, the one end of circuit board with conductive terminal elasticity links to each other, the other end with the first end electrical property of wire links to each other, the connector connect in on the wire with the relative second end that sets up of first end in order with the battery management system docks mutually.

As a further improvement of the present invention, the circuit board is provided with a fixing hole for fixing the conductive terminal, each of the conductive terminals has a fixing portion fixed on the circuit board and a contact portion extending from the circuit board to connect with the battery core in the battery pack.

As a further improvement of the present invention, each of the conductive terminals further has a connecting portion connecting the fixing portion and the contact portion, the connecting portion is curved to be elastically connected to the fixing portion and the contact portion.

As a further improvement of the present invention, the fixing portion has a base portion attached to the circuit board, and the base portion and the contact portion are located in different planes.

As a further improvement of the present invention, the connecting portion includes at least one connecting arm, each of which has a first end connected to the base portion, a second end connected to the contact portion, and at least one bent portion located between the first end and the second end.

As a further improvement of the utility model, conductive terminal still have from the fixed foot that the extension formed is buckled to the basal portion both sides and certainly the fixed part is kept away from the welding part that contact site one end was buckled and is extended, be equipped with on the circuit board with the corresponding welding hole of welding part and with the corresponding fixed orifices of fixed foot, the welding hole with the fixed orifices is arranged into triangle-shaped in groups and is supplied welding part and fixed foot are grabbed and are buckled.

As a further improvement of the utility model, the fixing part is located with one side the fixed foot is in pairs and the interval sets up and is the fish fork type to it is same to insert jointly in the fixed orifices.

As a further improvement of the present invention, the circuit board is elongated along the transverse direction, and the conductive terminals are uniformly arranged along the transverse direction and connected to the circuit board.

As a further improvement of the utility model, the coupling assembling includes two the circuit board and connect the first group on corresponding circuit board conductive terminal and second group conductive terminal, first group conductive terminal is used for linking to each other with the positive terminal of battery package, and the second is organized conductive terminal is used for linking to each other with the negative pole end of battery package.

As a further improvement of the utility model, the wire fall into respectively concentrate connect in two sets of circuit board, coupling assembling still have with the first protection piece and the second protection piece of wire and the junction cladding of corresponding circuit board, first protection piece and second protection piece are in the setting of staggering in the transverse direction.

The utility model has the advantages that: the utility model discloses coupling assembling is through adopting circuit board and conductive terminal to gather the relevant monitoring data of each battery core in the battery package to carry out information transfer through the circuit board, make the wire concentrate the one end of connecting at the circuit board, need not one and be connected to each battery core respectively, it is comparatively convenient to link up, and easy reason line; in addition, the other end of the wire is connected with a connector in a unified manner and is connected with the battery management system through the connector, so that the battery pack and the battery management system are connected simply and conveniently; simultaneously, through being crooked form setting with elastic connection in the fixed part with connecting portion between the contact site, absorb the tolerance that produces when battery core inflation or shrink and provide cushioning effect to electric automobile at the impact force that the vibrations in-process produced, so that coupling assembling can stably gather the signal, and has longer life.

Drawings

Fig. 1 is a schematic view of the three-dimensional assembly of the connection assembly of the present invention.

Fig. 2 is an exploded perspective view of the connection assembly shown in fig. 1.

Fig. 3 is a partially assembled view of the connection assembly shown in fig. 1.

Fig. 4 is a perspective view of the conductive terminals of the connection assembly of fig. 1 mounted to a circuit board.

Fig. 5 is a side view of the conductive terminal shown in fig. 4 mounted to a circuit board.

Fig. 6 is a partial schematic view of the circuit board shown in fig. 2.

Fig. 7 is a perspective view of the conductive terminal shown in fig. 4.

Detailed Description

The present invention will be described in detail below with reference to embodiments shown in the drawings. However, the present invention is not limited to the embodiment, and the structural, method, or functional changes made by those skilled in the art according to the embodiment are all included in the scope of the present invention.

Referring to fig. 1 to 7, a preferred embodiment of the connection assembly 100 of the present invention is shown, wherein the connection assembly 100 is electrically connected between a battery pack and a battery management system to collect information such as voltage or temperature on the battery pack.

Coupling assembling 100 includes circuit board 1, a plurality of conductive terminal 2, a plurality of wire 3 and be used for the connector 4 that docks mutually with battery management system, and is a plurality of conductive terminal 2 connect in the one end of circuit board 1 is in order to respectively with a plurality of battery core electric connection in the battery package, conductive terminal 2 is for a plurality of battery core electric connection in the battery package, the one end of circuit board 1 with conductive terminal 2 elasticity links to each other, the other end with the first end electric property of wire 3 links to each other, connector 4 connect in on the wire 3 with the relative second end that sets up of first end in order with battery management system docks mutually.

The connector 4 is connected to the other ends of the plurality of wires 3 to interface with the battery management system, that is, the connector 4 is connected to both ends of the wires 3 (that is, the first and second ends of the wires 3) opposite to the circuit board 1. The utility model mainly adopts the circuit board 1 and the conductive terminals 2 to collect the related monitoring data of each battery core in the battery pack and transmit information through the circuit board 1, so that the wires 3 can be intensively connected at one end of the circuit board 1 without being connected to each battery core one by one, thereby being convenient to connect and easy to arrange wires; further, connect connector 4 at the other end of wire 3 is unified to be connected with battery management system through connector 4, can further set up all wires 3 to same length from this, and all connect in the position department of being close to because of 3 both ends of wire, thereby can be with the whole equal centralized processing of wire 3, can adopt flat line or pencil etc. and then problem and the potential safety hazard that the wire is in disorder, occupy bulky, be difficult to distinguish can not appear.

Specifically, in the present invention, the circuit board 1 is provided with a fixing hole 11 for fixing the conductive terminal 2. The fixing holes 11 are dispersedly arranged at one end of the circuit board 1 so as to facilitate the connection of the conductive terminals 2 and the battery core. Preferably, still be provided with the locating hole 14 that is used for going on fixing a position with the battery package on the circuit board 1, in order to strengthen the utility model discloses the fixed effect of coupling assembling 100 and battery package.

In addition, the circuit board 1 is provided with a plurality of welding holes 12, the welding holes 12 are arranged in groups with the corresponding fixing holes 11, taking the illustrated embodiment as an example, each welding hole 12 is circular, and one welding hole 12 and two adjacent fixing holes 11 form a group to be connected to the same conductive terminal 2.

The circuit board 1 is lengthwise and extends along the transverse direction, and the conductive terminals 2 are uniformly arranged along the transverse direction and connected to the circuit board 1.

A plurality of intensively arranged golden fingers 13 are arranged at the other end of the circuit board 1, that is, the golden fingers 13 are arranged at two ends of the circuit board 1 opposite to the fixing holes 11.

Referring to fig. 3 to 7, each of the conductive terminals 2 includes a fixing portion 21, a contact portion 22 electrically connected to a corresponding battery cell in the battery pack, and a connecting portion connecting the fixing portion 21 and the contact portion 22, wherein the contact portion 22 extends to the outer side of the corresponding circuit board 1.

In the present embodiment, for convenience of description, when the conductive terminal 2 is introduced, the X direction shown in fig. 4 is taken as a first direction, the Y direction is taken as a second direction, and the Z direction is taken as a third direction.

Because the battery core can produce certain tolerance when perhaps receiving temperature influence inflation and shrink at the charge-discharge in-process to also can receive certain impact force at the vibrations in-process, thereby lead to the electrically connected between the battery core of coupling assembling's conductive terminal and battery package unstable, and then make signal acquisition unstable, life shorten.

The fixing portion 21 has a base portion 211 electrically connected to the circuit board 1 and a fixing leg 212 formed by bending and extending the base portion 211, the connecting portion is bent to be elastically connected between the base portion 211 and the contact portion 22, so that tolerance generated when the battery cell expands or contracts can be absorbed, and a buffering effect can be provided for an impact force generated by the electric vehicle in a vibration process, so that the connecting assembly 100 can stably collect signals.

In the preferred embodiment of the present invention, the base 211 is flat to be attached to the circuit board 1, and a plurality of the fixing pins 212 are formed by bending the base 211 at two sides in the third direction, and the fixing pins 212 at each side are in a fishbone shape in pairs and spaced from each other to be inserted into the same fixing holes 11, so that the fixing holes 11 can be firmly combined with each other. In the present embodiment, each of the fixing holes 11 is elongated and extends along the first direction.

Specifically, each of the fixing legs 212 has a guide surface 2121 disposed near a free end thereof in the second direction, an abutting portion 2122 between the guide surface 2121 and the base 211 in the second direction, and a straight portion 2123 connecting the abutting portion 2122 and the guide surface 2121. When the conductive terminal 2 is mounted on the circuit board 1, the fixing pin 212 is inserted into and passes through the fixing hole 11 until the circuit board 1 is clamped between the abutting portion 2122 and the base 211, so as to clamp and fix the fixing pin 212 to the circuit board 1.

In the illustrated embodiment of the present invention, the contact portion 22 is flat, and the base portion 211 and the contact portion 22 of the same conductive terminal 2 are located in different planes, specifically, the contact portion 22 is of a sinking plate design to facilitate connection or contact with a battery cell; in other embodiments of the present invention, the base portion 211 can be disposed coplanar with the contact portion 22, or the contact portion 22 is located on the upper side of the base portion 211 in the second direction.

The connecting portion includes at least one connecting arm 23, and each connecting arm 23 has a first end 23a connected to the base portion 211, a second end 23b connected to the contact portion 22, and at least one bent portion 232 between the first end and the second end.

Further, each of the connecting arms 23 has a flat plate portion 231 extending from the base portion 211 along a first direction and the bent portion 232 bent and extending from the flat plate portion 231, and the first end 23a is an end of the flat plate portion 231 connected to the base portion 211. In this embodiment, the width of each connecting arm 23 in the third direction is always the same, that is, the width of the flat plate portion 231 and the width of the bent portion 232 of the same connecting arm 23 in the third direction are the same.

The flat plate portion 231 further has a third end 23c opposite to the first end 23a, the flat plate portion 231 extends obliquely so that a distance from the third end 23c to the circuit board 1 is greater than a distance from the first end 23a to the circuit board 1, specifically, in this embodiment, the flat plate portion 231 extends in the first direction from the base portion 211 and also extends in the second direction, so as to extend obliquely, and an included angle formed by the connection between the flat plate portion 231 and the base portion 211 is an obtuse angle.

In the preferred embodiment of the present invention, the bending portion 232 includes a first arc-shaped portion 2321 formed by bending from the third end 23c and a second arc-shaped portion 2322 formed by reversely bending and extending from the first arc-shaped portion 2321. In this embodiment, the bending portion 232 further has a bridging portion 2323 connecting the first arc-shaped portion 2321 and the second arc-shaped portion 2322, and the bridging portion 2323 is disposed in parallel or substantially parallel to the flat plate portion 231; in other embodiments, the bending portion 232 may also be formed by connecting a plurality of arc portions in smooth transition connection.

The contact portion 22 and the base portion 211 are located on different planes, the first arc-shaped portion 2321 and the second arc-shaped portion 2322 are arranged along a second direction, so that the third end 23c and the second end 23b are spaced along the second direction, and the base portion 211 and the contact portion 22 are parallel and spaced along the second direction.

The opening of the first arc-shaped part 2321 faces the fixing part 21, and the opening direction of the second arc-shaped part 2322 is opposite to the opening direction of the first arc-shaped part 2321.

Further preferably, the length of the flat plate portion 231 in the first direction is greater than the length of the bent portion 232 in the first direction, the second arc-shaped portion 2322 and the flat plate portion 231 are located on two sides of the base portion 211 in the second direction, a projection of the second arc-shaped portion 2322 on the plane of the contact portion 22 is located inside a projection of the flat plate portion 231 on the plane, and a projection of the second arc-shaped portion 2322 on the plane of the contact portion 22 is not overlapped with a projection of the first arc-shaped portion 2322 on the plane.

Further, as shown in fig. 4, in the present invention, the connecting portion has a plurality of connecting arms 23 arranged side by side along a third direction, the third direction is perpendicular to the first direction, a certain distance is formed between two adjacent connecting arms 23 along the third direction, and preferably, the distance formed between two adjacent connecting arms 23 along the third direction is smaller than the width of each connecting arm 23 along the third direction. In other embodiments, the connecting portion may have only one or two, four or more connecting arms 23, and the connecting arms 23 have a curved sheet-like structure.

In addition, each of the conductive terminals 3 further has a soldering portion 24 soldered to the circuit board 1, the soldering portion 24 is formed by bending and extending an end of the fixing portion 21 away from the contact portion 22, in this embodiment, the soldering portion 24 is formed by bending the fixing portion 21 along a second direction, the soldering portion 24 is parallel to the second direction, and the soldering portion 24 is connected to the fixing portion 21 at a middle position in a third direction. The soldering holes 12 and the fixing holes 11 on the circuit board 1 are arranged in a triangular shape in groups for the soldering portion 24 and the fixing legs 212 to catch.

In the embodiment shown in the present invention, the connecting assembly 100 has two circuit boards 1 and a first group of the conductive terminals 2 and a second group of the conductive terminals 2 connected to the two circuit boards 1, the wires 3 are divided into two groups respectively connected to different circuit boards 1 in a centralized manner, one end of one group of the wires 3 is connected to one of the circuit boards 1, and the other end of the wires 3, which is arranged oppositely, is connected to the connector 4, and further connected to the positive terminal of the battery pack through the corresponding first group of the conductive terminals 2; one end of the other group of conducting wires 3 is connected with the other circuit board 1, the other end arranged oppositely is also connected with the connector 4, and the other end is connected with the negative end of the battery pack through the corresponding second group of conducting terminals 2; the connector 4 is connected to the other ends of the two sets of wires 3 to interface with the battery management system.

Each group of the leads 3 is intensively arranged and is welded with the gold fingers 13 of the corresponding circuit board 1 in a one-to-one correspondence manner. A wire circuit (not shown) electrically connecting the terminal 2 and the gold finger 13 is disposed in the circuit board 1. Preferably, the connecting assembly 100 further includes a protection block 5 injection-molded at a connection position of the wire 3 and the circuit board 1, and the circuit board 1 is provided with an opening 15 for being stably fixed with the protection block 5 during injection molding. Specifically, the protection block 5 includes a first protection block 51 and a second protection block 52 covering a connection portion of the lead 3 and the corresponding circuit board 1, and the first protection block 51 and the second protection block 52 are arranged in a staggered manner in the transverse direction.

In addition, the connection assembly 100 further comprises a thermal sensor 6 disposed on the circuit board 1, and a detection end of the thermal sensor 6 extends out of the circuit board 1 to detect the battery pack.

The utility model discloses in the above-mentioned design, through the design of a set of circuit board 1, conductive terminal 2 and wire 3, can connect in battery core one end to gather the temperature information of battery core etc..

The utility model discloses coupling assembling 100 adopts circuit board 1 and conductive terminal 2 to gather the relevant monitoring data of each battery core in the battery package to carry out information transfer through circuit board 1, make wire 3 can concentrate to connect in the one end of circuit board 1, need not one and connect to each battery core respectively, it is comparatively convenient to link up, and easy reason line; in addition, connect the connector at the other end of wire 3 to be connected with battery management system through the connector, can further set up all wires to same length from this, and because of the wire both ends all connect and be close to position department, thereby can all concentrate the processing with the wire wholly, for example adopt flat line or pencil etc. and then can not appear that the wire is in disorder, occupy bulky, be difficult to the problem and the potential safety hazard of distinguishing.

In addition, the utility model discloses coupling assembling 100 through be the curved setting with elastic connection in basal portion 211 with connecting portion between the contact site 22 absorb the tolerance that produces when battery core inflation or shrink and provide the cushioning effect to the impact force that electric automobile produced in the vibrations process, so that coupling assembling 100 can stably gather the signal, and has longer life.

The above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present invention.

Claims (10)

1. A kind of coupling assembling, for the electric connection between battery pack and a battery management system, characterized by that: the connecting assembly comprises a circuit board, a plurality of conductive terminals, a plurality of wires and a connector, the conductive terminals are used for being electrically connected with a plurality of battery cores in a battery pack, one end of the circuit board is elastically connected with the conductive terminals, the other end of the circuit board is electrically connected with a first end of the wire, and the connector is connected with a second end, opposite to the first end, of the wire so as to be in butt joint with the battery management system.

2. The connection assembly of claim 1, wherein: the circuit board is provided with fixing holes for fixing the conductive terminals, and each conductive terminal is provided with a fixing part fixed on the circuit board and a contact part extending out of the circuit board to be connected with a battery core in the battery pack.

3. The connection assembly of claim 2, wherein: each conductive terminal is also provided with a connecting part which connects the fixing part and the contact part, and the connecting part is arranged in a bending shape and is elastically connected between the fixing part and the contact part.

4. The connection assembly of claim 3, wherein: the fixing part is provided with a base part which is attached to the circuit board, and the base part and the contact part are located in different planes.

5. The connection assembly of claim 4, wherein: the connecting portion comprises at least one connecting arm, and each connecting arm is provided with a first end connected with the base portion, a second end connected with the contact portion and at least one bent portion located between the first end and the second end.

6. The connection assembly of claim 4, wherein: the conductive terminal is also provided with fixing pins formed by bending and extending from two sides of the base part and welding parts bent and extending from one ends of the fixing parts far away from the contact parts, welding holes corresponding to the welding parts and fixing holes corresponding to the fixing pins are arranged on the circuit board, and the welding holes and the fixing holes are arranged in groups to form triangles for the clamping of the welding parts and the fixing pins.

7. The connection assembly of claim 6, wherein: the fixing feet positioned on the same side of the fixing part are in pairs and are arranged at intervals to be in a fishfork shape so as to be jointly inserted into the same fixing hole.

8. The connection assembly of claim 3, wherein: the circuit board is in a longitudinal shape extending along the transverse direction, and the conductive terminals are uniformly arranged along the transverse direction and connected to the circuit board.

9. The connection assembly of claim 8, wherein: the connecting assembly comprises two circuit boards, a first group of conductive terminals and a second group of conductive terminals, wherein the first group of conductive terminals and the second group of conductive terminals are connected to the corresponding circuit boards, the first group of conductive terminals are used for being connected with the positive end of the battery pack, and the second group of conductive terminals are used for being connected with the negative end of the battery pack.

10. The connection assembly of claim 9, wherein: the wire divide into respectively concentrate connect in the two sets of circuit board, coupling assembling still has with the first protection piece and the second protection piece of wire and the coated of junction of corresponding circuit board, first protection piece and second protection piece are in stagger the setting in the transverse direction.

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