CN216903439U - Connecting device, battery and electric equipment - Google Patents

Abstract

The application provides a connecting device, a battery and electric equipment, which are used in the technical field of batteries and energy storage equipment. The connecting device comprises a shell; a first connecting part inserted into the housing; the second connecting part is inserted into the shell, and the first connecting part is electrically connected with the second connecting part; and the positioning piece is inserted into the shell and used for positioning the first connecting part relative to the shell. The connecting device has simple structure, and saves the production cost and the space inside the battery.

Description

Connecting device, battery and electric equipment

Technical Field

The application relates to the technical field of batteries and energy storage equipment, in particular to a connecting device, a battery and electric equipment.

Background

FFC (flexible flat cable) has excellent flexibility, dielectric function and heat resistance, and is widely used in the fields of communications, computers, industrial machinery, consumer electronics, and the like. In particular, in a battery having a compact internal structure, the flexible flat cable plays an important role in transmitting signals through the connection device.

People have higher and higher performance requirements on the signal transmission device, but the existing connecting device has a complex structure and is complex to assemble. Therefore, how to simplify the structure of the connection device is a technical problem to be solved.

SUMMERY OF THE UTILITY MODEL

The application provides a connecting device, battery and consumer, has simplified connecting device's structure, has saved the inside space of battery.

According to a first aspect of the present application, there is provided a connection device comprising a housing; a first connecting part inserted into the housing; the second connecting part is inserted into the shell, and the first connecting part is electrically connected with the second connecting part; and the positioning piece is inserted into the shell and used for positioning the first connecting part relative to the shell.

In the embodiment of the application, the connecting device comprises a positioning piece which is inserted into the shell and used for positioning the first connecting part relative to the shell, the structure and the assembly mode of the connecting device are simplified, the reliable connection of the first connecting part and the second connecting part is realized, the connecting device can comprise a plug-in, and meanwhile, the connecting piece can also comprise a connecting piece, so that the function of switching the first connector and the battery management control system through a single connecting device is realized, the production cost is reduced, and the assembly space inside the battery can be saved.

In some embodiments, the housing includes an upper housing and a lower housing, and the positioning member penetrates through the upper housing and is connected to the first connection portion. The locating piece passes through the upper shell and is connected with the first connecting portion, so that the locating piece can be located and fixed on the first connecting portion, and the assembling mode of the locating piece is simplified.

In some embodiments, the positioning member is provided with at least two positioning posts, the first connecting portion is provided with at least two positioning holes, and the positioning posts are disposed in the positioning holes. The positioning piece is provided with at least two positioning columns, the first connecting portion is provided with at least two positioning holes, and the positioning columns penetrate through the upper shell and enter the positioning holes so as to fix the position of the first connecting portion relative to the upper shell, so that the connection reliability of the first connecting portion and the second connecting portion can be enhanced, and the movement of the first connecting portion is limited.

In some embodiments, the lower housing has a groove, and the positioning pillar penetrates through the positioning hole and is disposed in the groove. The lower shell is provided with a groove, so that the fixed connection reliability of the positioning piece and the first connecting part can be enhanced, and the first connecting part is further positioned.

In some embodiments, the upper housing includes a plurality of inner walls enclosing a space for accommodating the positioning member, the inner walls being provided with a stepped portion. The inner wall is provided with a step part which has certain blocking effect on the positioning piece, and the positioning piece which is not inserted can be temporarily stored in the space enclosed by the inner wall of the upper shell, thereby being beneficial to assembly.

In some embodiments, the positioning element includes a protrusion, the protrusion is located at one end of the positioning element away from the top of the upper housing along the vertical direction, and the step is clamped with the protrusion. The positioning member includes a protrusion extending from the positioning member in a direction adjacent to the inner wall. Before the first connecting part is not inserted into the shell, the positioning piece is temporarily stored in a space enclosed by the inner wall of the upper shell, and the protrusion of the positioning piece can abut against the step part of the upper shell so as to support the positioning piece.

In some embodiments, the protrusion is made of an elastic material. The protrusion made of an elastic material can reduce the loss of the positioning member when the stopper of the stepped portion is broken. After the positioning piece is used for positioning the first connecting part, the protrusion can be restored to the original shape, so that the positioning piece can be detached and reused, the assembling mode of the connecting device is simplified, and the service life of the connecting device is prolonged.

In some embodiments, the positioning member further comprises a relief portion disposed adjacent to the protrusion for providing a rebound space. Dodge the portion and for protruding provide the space of kick-backing, when needing to insert the setting element, protruding and the step portion butt of last casing are protruding to be kick-backed to dodge in the portion to through step portion, make the setting element along the direction motion of being close to first connecting portion, accomplish the location. The avoiding part is matched with the protrusion, so that the positioning piece is assembled.

In some embodiments, the inner wall is provided with a plurality of step portions, and the plurality of step portions are oppositely arranged along the arrangement direction of the second connection portions. The arrangement direction of a plurality of step portions along the second connecting portion sets up relatively, specifically, two inner walls symmetry that the arrangement direction is relative along the second connecting portion are provided with a plurality of step portions, still do benefit to the setting element along the direction motion that is close to first connecting portion when accomplishing the support to the setting element.

In some embodiments, the inner wall is provided with a plurality of steps, which are provided along a circumferential direction of the upper case. The plurality of step portions are arranged along the circumferential direction of the upper shell, so that the step portions can further support the positioning piece in the circumferential direction.

In some embodiments, the second connecting portion includes two abutting portions disposed opposite to each other, and the two abutting portions are disposed in contact with the first connecting portion to electrically connect the first connecting portion to the circuit board. Two butt portions set up with the laminating of first connecting portion, have realized connecting the function of first connector and circuit board through a connecting device, and the circuit board can be connected with battery management control system, reaches the purpose of switching battery internal signal of telecommunication or temperature signal.

In some embodiments, the second connecting portion includes a receiving cavity surrounded by two abutting portions to receive the front end portion of the first connecting portion. The two abutting parts are distributed up and down, extend forwards from the second connecting part to form a cantilever shape, are contacted with each other at the front end position, and enclose a containing cavity formed by enclosing the two abutting parts and used for containing the front end part of the first connecting part. Two butt portions of the second connecting portion respectively extend towards each other in an inclined mode, and a thickening structure is arranged at the front end of the second connecting portion, so that the two butt portions are in contact with each other and enclose to form an accommodating cavity. The front end of the first connecting part can be inserted into the accommodating cavity from the joint of the two thickening structures, the two abutting parts of the cantilever structure are kept at the front ends thereof to be attached to the first connecting part, and the first connecting part is electrically connected with the second connecting part through the abutting parts.

In some embodiments, the front end is folded. The front end part of the first connecting part can be provided with a 51-180-degree folding structure so as to increase the thickness of the first connecting part and improve the strength of the inserting part of the first connecting part, thereby facilitating the integral assembly of the product and realizing the stable connection of the first connecting part and the second connecting part.

In some embodiments, the second connection portion further includes a lead-out portion connected with the circuit board. The second connecting part also comprises a leading-out part, and the signal transmission between the first connecting part and the circuit board can be realized by connecting the leading-out part with the circuit board.

In some embodiments, the lead-out portion includes a first extension portion extending in the vertical direction and a second extension portion extending in a direction close to the circuit board. The first extension part of the leading-out part extends along the vertical direction, and the second extension part of the leading-out part extends along the direction close to the circuit board and is welded with the circuit board, so that the welding area of the leading-out part is ensured, the welding strength of the second connecting part and the circuit board is ensured, and the structural strength of the second connecting part is further improved.

In some embodiments, the second connecting portion further comprises a blocking portion, the blocking portion and the housing cooperating to limit disengagement of the second connecting portion from the housing. The second connecting part is inserted from a corresponding hole on the shell and then is fixed through the insertion and matching of the blocking part and the shell. In particular, the blocking portion may include a plurality of pyramids or sharp edges, and the blocking portion may penetrate the housing to be fixed, thereby restricting the movement of the second connection portion.

In some embodiments, the housing further comprises a guide portion for guiding the first connection portion to pass through the housing. The casing still includes the guide part, and the opening of guide part reduces from outside-in gradually, is favorable to first connecting portion to pass the casing, reduces the damage to first connecting portion.

According to a second aspect of the present application, there is provided a battery comprising: the connecting device of the first aspect.

According to a third aspect of the present application, there is provided an electric device including: the battery of the second aspect, the battery for providing electrical energy.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic illustration of a vehicle according to one embodiment of the present application;

FIG. 2 is a schematic diagram of a battery according to one embodiment of the present application;

FIG. 3 is a schematic structural diagram of a coupling device according to an embodiment of the present application;

FIG. 4 is an exploded view of a coupling device according to an embodiment of the present application;

FIG. 5 is a cross-sectional view of a coupling device according to one embodiment of the present application;

FIG. 6 is a cross-sectional view of a coupling device according to one embodiment of the present application;

fig. 7 is a cross-sectional view of a first connection portion of one embodiment of the present application.

In the drawings, the drawings are not necessarily to scale.

Description of the labeling:

1-a vehicle; 10-a battery; 11-a controller; 12-a motor;

20-a box body; 21-upper box body; 22-lower box body; 23-a battery cell;

30-a connecting means; 31-a first connection; 311-positioning holes; 312-a front end portion; 32-a second connection; 321-an abutment; 322-a receiving cavity; 323-a lead-out portion; 323 a-first extension; 323 b-a second extension; 324-a blocking portion; 33-a housing; 331-an upper shell; 332-a lower shell; 333-groove; 334-a step portion; 335-a guide;

40-a positioning element; 41-a positioning column; 42-a protrusion; 43-an escape portion;

50-circuit board.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the application in the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "including" and "having," and any variations thereof in the description and claims of this application and the description of the figures above, are intended to cover non-exclusive inclusions.

Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the specification. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

The appearances of "a plurality" in this application are intended to mean more than two (including two).

Reference to a battery in embodiments of the present application refers to a single physical module that includes one or more battery cells to provide higher voltage and capacity. For example, the battery referred to in the present application may include a battery module or a battery pack, etc. Batteries generally include a case for housing one or more battery cells. The box can avoid liquid or other foreign matters to influence the charging or discharging of battery monomer.

In order to meet different power requirements, the battery may include a plurality of battery cells, wherein the plurality of battery cells may be connected in series or in parallel or in series-parallel, and the series-parallel refers to a mixture of series connection and parallel connection.

In the present application, the battery cell may include a lithium ion secondary battery, a lithium ion primary battery, a lithium sulfur battery, a sodium lithium ion battery, a sodium ion battery, a magnesium ion battery, or the like, which is not limited in the embodiments of the present application. The battery cell may be a cylinder, a flat body, a rectangular parallelepiped, or other shapes, which is not limited in the embodiments of the present application. The battery cells are generally divided into three types in an encapsulation manner: the cylindrical battery monomer, the square battery monomer and the soft package battery monomer are not limited in the embodiment of the application.

The battery monomer comprises an electrode assembly and electrolyte, wherein the electrode assembly comprises a positive plate, a negative plate and an isolating membrane. The battery cell mainly depends on metal ions moving between the positive plate and the negative plate to work. The positive plate comprises a positive current collector and a positive active substance layer, wherein the positive active substance layer is coated on the surface of the positive current collector, the current collector which is not coated with the positive active substance layer protrudes out of the current collector which is coated with the positive active substance layer, and the current collector which is not coated with the positive active substance layer is used as a positive electrode lug. Taking a lithium ion battery as an example, the material of the positive electrode current collector may be aluminum, and the positive electrode active material may be lithium cobaltate, lithium iron phosphate, ternary lithium, lithium manganate, or the like. The negative pole piece includes negative current collector and negative pole active substance layer, and the negative pole active substance layer coats in the surface of negative current collector, and the mass flow body protrusion in the mass flow body of coating the negative pole active substance layer of uncoated negative pole active substance layer, the mass flow body of uncoated negative pole active substance layer is as negative pole utmost point ear. The material of the negative electrode current collector may be copper, and the negative electrode active material may be carbon, silicon, or the like. In order to ensure that the fuse is not fused when a large current is passed, the number of the positive electrode tabs is multiple and the positive electrode tabs are stacked together, and the number of the negative electrode tabs is multiple and the negative electrode tabs are stacked together. The material of the isolation film may be polypropylene (PP) or Polyethylene (PE). In addition, the electrode assembly may have a winding structure or a lamination structure, and the embodiment of the present application is not limited thereto.

A Flexible Flat Cable (FFC) is a component for signal transmission, which includes an insulating film and a conductive wire, and is formed by pressing, and has the advantages of flexibility, arbitrary bending, thin thickness, small volume, and simple connection, and thus is widely used in the fields of communications, computers, industrial machinery, and consumer electronics. In particular, in a battery having a compact internal structure, the flexible flat cable plays an important role in transmitting signals through the connection device.

However, the existing connecting device has the disadvantages of complex structure, complex assembly and higher manufacturing cost. Therefore, it is desirable to provide a connecting device with simple and reliable structure to simplify the processing and production requirements of the connecting device, save the assembly space and reduce the cost.

In view of this, the application provides a connecting device for fixing a signal acquisition cable through a positioning piece, which can position the signal acquisition cable, simplify the structure of the connecting device, and save the cost.

One embodiment of the present application provides an electrical device, and a battery is used for providing electrical energy.

The technical scheme described in the embodiment of the application is suitable for the battery and various electric devices using the battery, wherein the electric devices can be vehicles, mobile phones, portable devices, notebook computers, ships, spacecrafts, electric toys, electric tools and the like. The vehicle can be a fuel oil vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid electric vehicle or a range-extended vehicle and the like; spacecraft include aircraft, rockets, space shuttles, and spacecraft, among others; electric toys include stationary or mobile electric toys, such as game machines, electric car toys, electric ship toys, electric airplane toys, and the like; the electric power tools include metal cutting electric power tools, grinding electric power tools, assembly electric power tools, and electric power tools for railways, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, electric impact drills, concrete vibrators, and electric planers.

It should be understood that the technical solutions described in the embodiments of the present application are not limited to be applied to the above-described apparatuses, but may also be applied to all devices using batteries, and for brevity of description, the following embodiments are all described by taking an electric vehicle as an example.

For example, as shown in fig. 1, a schematic structural diagram of a vehicle 1 according to an embodiment of the present application is shown. The vehicle 1 can be a fuel automobile, a gas automobile or a new energy automobile, and the new energy automobile can be a pure electric automobile, a hybrid electric automobile or a range-extended automobile and the like. The battery 10 may be provided inside the vehicle 1, and specifically, for example, the battery 10 may be provided at the bottom or the head or the tail of the vehicle 1. The battery 10 may be used for power supply of the vehicle 1, and for example, the battery 10 may serve as an operation power source of the vehicle 1. The vehicle 1 may further comprise a controller 11 and a motor 12, the controller 11 being used, for example, to control the battery 10 to power the motor 12. The battery 10 can be used for power demand during starting, navigation and operation of the vehicle 1, and of course, the battery 10 can also be used for driving the vehicle 1 to run, instead of or partially replacing fuel oil or natural gas to provide driving power for the vehicle 1.

Fig. 2 is a schematic exploded view of a battery 10 according to an embodiment of the present disclosure. The battery 10 includes a battery cell 23 and a case 20, the number of the battery cells 23 may be one or more, and when there are a plurality of battery cells 23, the plurality of battery cells 23 are arranged in the case 20. The housing 20 may comprise two parts, referred to herein as an upper housing 21 and a lower housing 22, respectively, the upper housing 21 and the lower housing 22 being snap-fitted together. The shape of the upper case 21 and the lower case 22 may be determined according to the shape of the combination of the battery cells 23, and the upper case 21 and the lower case 22 may each have one opening. For example, the upper casing 21 and the lower casing 22 may be hollow cuboids, only one surface of each of the upper casing 21 and the lower casing 22 is an opening surface, the opening of the upper casing 21 and the opening of the lower casing 22 are oppositely arranged, and the upper casing 21 and the lower casing 22 are buckled with each other to form the casing 20 having a closed chamber. The upper casing 21 may be a rectangular parallelepiped having an opening and the lower casing 22 may be plate-shaped, or the lower casing 22 may be a rectangular parallelepiped having an opening and the upper casing 21 may be plate-shaped, and the upper casing 21 and the lower casing 22 may be disposed to face each other and engaged with each other to form the casing 20 having a closed chamber. The battery cells 23 are connected in parallel or in series-parallel combination and then placed in the box body 20 formed by buckling the upper box body 21 and the lower box body 22. The engaging portion of the upper case 21 and the lower case 22 can be sealed by a sealing element, which can be a sealing ring, a sealant, etc.

Alternatively, the battery 10 may also include other structures, such as an assembly of battery cells 23 arranged in multiple layers, or a bus member, a signal acquisition member, a battery management control system, and the like. The signal acquisition component can acquire the electric signals and/or temperature signals of the battery monomer 23 in the battery 10, and the connecting device can realize the information interaction between the signal acquisition component in the battery 10 and the battery management control system in the sampling process. The connecting device can be arranged on the signal acquisition component and is electrically connected with the signal acquisition component, and meanwhile, the output end of the connecting device is connected with the corresponding input end of the battery management control system, so that signal interaction is realized.

Fig. 3 is a schematic structural diagram of a connecting device 30 according to an embodiment of the present application. Fig. 4 is an exploded view of the connecting device 30 according to an embodiment of the present application.

As shown in fig. 3 and 4, the present application provides a connecting device 30 including a housing 33, a first connecting portion 31, a second connecting portion 32, and a positioning member 40. The first connecting portion 31 is inserted into the housing 33. The second connection portion 32 is inserted into the housing 33, and the first connection portion 31 is electrically connected to the second connection portion 32. The positioning member 40 is inserted into the housing 33 for positioning the first connecting portion 31 with respect to the housing 33.

The connection device 30, also referred to as a socket connector or connector, may connect two active devices and transmit current and/or signals between the two active devices. In particular, the connection device 30 may comprise two parts, namely a plug and a connector, and the plug with the pins may be mounted on one active device and the connector with the sockets may be mounted on the other active device. The plug-in and the connector of the connection device 30 are contacted, so that the connection of the two active devices can be realized. The plug-in and the connector are key elements of the connecting device 30, and directly affect the reliability of the electrical connection of the connecting device 30. The plug-in and the connecting piece are mostly made of elastic copper alloy materials with good conductivity, and silver plating and gold plating can be adopted on the surface of the plug-in and the connecting piece to achieve the purposes of reducing contact resistance and preventing corrosion. In the present application, the connecting device 30 may comprise an insert, but may also comprise a tab. The size of the connection device 30 may be set according to the size of the first connection portion 31, which is not limited in this application. The connecting device 30 includes a housing 33, and the housing 33 is made of an insulating material, such as nylon, polyester plastic, polycarbonate plastic, etc., and has a certain electromagnetic shielding effect.

Alternatively, the first connection portion 31 is electrically connected to the second connection portion 32, and the first connection portion 31 may be a plug, and may be a flexible flat cable, for example. The flexible flat cable can be made of an upper layer of insulating foil film and a lower layer of insulating foil film, and a flat copper foil is clamped in the middle of the flexible flat cable, so that the flexible flat cable has the characteristics of high wiring density, thin thickness, good bending property and low cost. The flexible flat cable is characterized in that a copper foil conducting layer is isolated by using an insulating material, so that current flows in various components along a pre-designed circuit, and functions such as acting, amplifying, attenuating, modulating, demodulating, encoding and the like are realized. The flexible flat cable has a single side, double sides and a multi-layer board. The surface layer and the inner layer conductor of the double-sided and multi-layer flexible flat cable are electrically connected with the inner-layer and outer-layer circuits through metallization. The flexible flat cable has four functions, namely, a lead wire, a printed circuit, a connector and a multifunctional integrated system.

The second connection portion 32 may be a connecting member, and may be a terminal, for example. The connection terminal may be composed of two parts, one part being connected to the first connection portion 31 and the other part being soldered to the circuit board 50. The soldering portion of the second connection portion 32 may be connected to the horizontal, vertical, or oblique circuit board 50, for example. Illustratively, during assembly, the second connecting portion 32 is fixed to the circuit board 50 by soldering to connect the circuit, and the other end is connected to the first connecting portion 31 in the housing 33 to connect the connecting device 30. Specifically, the number of the second connecting portions 32 may be multiple, and the housing 33 is provided with multiple corresponding holes for the second connecting portions 32 to be inserted into. The gap between the hole of the housing 33 and the second connecting portion 32 is small, whereby it is possible to prevent excessive vibration, to make the product tight and to improve the reliability in use.

Exemplarily, in the field of battery technology, one end of the wire on the first connecting portion 31 is electrically connected to the bus bar on the battery cell 23 for collecting an electrical signal and/or a temperature signal on the bus bar. The other end of the wire is connected to the second connection portion 32 of the connection device 30, and transmits the collected signal to the connection device 30. The output end of the connection device 30 may be connected to a battery management control system so as to transmit the collected signal to the outside.

The positioning member 40 is used to position the first connection portion 31 with respect to the housing 33, and the positioning member 40 may be, for example, an Independent Secondary Lock (ISL). The second connecting portion 32 is inserted into the housing 33 of the connecting device 30, the first connecting portion 31 is connected with the second connecting portion 32, and then the positioning member 40 is inserted for positioning, so as to complete the secondary locking of the plug connection of the connecting portions. Specifically, the material of the positioning element 40 may be the same as or different from the housing, and the material of the positioning element 40 may be an insulating material, so as to avoid affecting the electrical connection of the first connection portion 31 and the second connection portion 32.

In the embodiment of the present application, the connecting device 30 includes the positioning member 40, and the positioning member 40 is inserted into the housing 33 to position the first connecting portion 31 relative to the housing 33, so as to simplify the structure and the assembly manner of the connecting device 30, and achieve reliable connection between the first connecting portion 31 and the second connecting portion 32. The connection device 30 may include a plug-in unit and a connector unit, so that the function of switching the first connector 31 and the battery management control system through a single connection device 30 is realized, the production cost is reduced, and the assembly space inside the battery 10 can be saved.

Referring to fig. 5 to 7, fig. 5 is a cross-sectional view of a connecting device 30 according to an embodiment of the present application. Fig. 6 is a cross-sectional view of the connection device 30 of one embodiment of the present application along the extending direction of the first connection portion 31. Fig. 7 is a sectional view of the first connection portion 31 according to an embodiment of the present application.

In some embodiments, the housing 33 includes an upper housing 331 and a lower housing 332, and the positioning member 40 penetrates the upper housing 331 and is coupled to the first coupling portion 31.

As shown in fig. 5, the housing 33 may include two parts, which are referred to as an upper housing 331 and a lower housing 332, respectively, where the upper housing 331 and the lower housing 332 have a portion into which the first connecting portion 31 is inserted in a spaced state, and the upper housing 331 and the lower housing 332 have a portion into which the second connecting portion 32 is inserted in a connected state. The shape of the housing 33 may be determined according to the shape of the combination of the first connection portion 31 and the second connection portion 32. The upper case 331 and the lower case 332 are disposed oppositely and form the case 33. For example, the upper case 331 may further include a space for accommodating the positioning member 40, and the positioning member 40 may pass through the accommodating space of the upper case 331 to fix the first connecting portion 31.

The positioning member 40 penetrates through the upper housing 331 and is connected to the first connecting portion 31, which is beneficial to positioning and fixing the positioning member 40 to the first connecting portion 31, and simplifies the assembling mode of the positioning member 40.

In some embodiments, the positioning member 40 is provided with at least two positioning holes 41, the first connecting portion 31 is provided with at least two positioning holes 311, and the positioning holes 311 are provided with the positioning posts 41.

As shown in fig. 5, fig. 5 illustrates a cross-sectional view of a coupling device 30 according to an embodiment of the present application. The positioning hole 311 is a through hole in the first connection portion 31. The positioning post 41 is a cylindrical member that can pass through the positioning hole 311 and is used for fixing the first connecting portion 31.

The positioning member 40 is provided with at least two positioning posts 41, the first connecting portion 31 is provided with at least two positioning holes 311, the positioning posts 41 penetrate through the upper housing 331 and enter the positioning holes 311 to fix the position of the first connecting portion 31 relative to the upper housing 331, so that the connection reliability between the first connecting portion 31 and the second connecting portion 32 can be enhanced, and the movement of the first connecting portion 31 can be limited.

In some embodiments, the lower housing 332 is provided with a groove 333, and the positioning post 41 penetrates through the positioning hole 311 and is disposed in the groove 333.

As shown in fig. 5, the groove 333 is provided in the lower housing 332, when the first connecting portion 31 is inserted into the housing 33 and connected with the second connecting portion 32, the positioning member 40 is inserted from the upper housing 331, and the positioning post 41 of the positioning member 40 penetrates through the positioning hole 311 of the first connecting portion 31 and then is inserted into the groove 333 of the lower housing 332, so as to complete the fixing and positioning of the first connecting portion 31.

The lower case 332 is provided with a groove 333 to enhance the fixing reliability of the positioning member 40 and the first connecting portion 31, and further position the first connecting portion 31.

As shown in fig. 6, fig. 6 shows a cross-sectional view of the connecting means 30 in the direction in which the first connecting portion 31 extends. In some embodiments, the upper case 331 includes a plurality of inner walls enclosing a space for accommodating the positioning member 40, and the inner walls are provided with a stepped portion 334.

The inner wall is provided with a stepped portion 334, and the stepped portion 334 extends from the inner wall of the upper case 331 in a direction to approach the positioning member 40. Alternatively, the step portion 334 is disposed on a side wall portion of the space for accommodating the positioning member 40, the step portion 334 extends from the inner wall in a direction approaching the positioning member 40 to form an inwardly protruding step portion 334, and the protruding step portion 334 further has a certain blocking effect on the positioning member 40. During the assembly process, the second connecting portion 32 is inserted into the housing 33 for fixed connection, and before the first connecting portion 31 is not inserted into the housing 33, the positioning member 40 can be disposed in the space enclosed by the inner walls of the upper housing 331. By the blocking effect of the stepped portion 334, the bottom of the positioning element 40, i.e. the bottom of the positioning column 41, is higher than the gap between the upper housing 331 and the lower housing 332 for inserting the first connecting portion 31, so as to prevent the positioning element 40 from affecting the insertion of the first connecting portion 31.

The inner wall is provided with a step portion 334 which has a certain blocking effect on the positioning element 40, so that the positioning element 40 which is not inserted can be temporarily stored in a space enclosed by the inner wall of the upper shell 331, and the assembly is facilitated.

It is to be understood that the above-mentioned embodiment is described by taking as an example the placement state when the connecting device 30 connects the first connecting portion 31 and the second connecting portion 32, and the connecting device 30 may be placed in other ways in practical application.

As shown in fig. 6, in some embodiments, the positioning member 40 includes a protrusion 42, the protrusion 42 is located at an end of the positioning member 40 away from the top of the upper housing 331 in the vertical direction, and the step 334 is engaged with the protrusion 42.

The securing member 40 includes a protrusion 42, the protrusion 42 extending from the securing member 40 in a direction adjacent the inner wall. Before the first connecting portion 31 is not inserted into the housing 33, the positioning element 40 is temporarily stored in the space enclosed by the inner wall of the upper housing 331, and the protrusion 42 of the positioning element 40 can abut against the step portion 334 of the upper housing 331 to support the positioning element 40.

In some embodiments, the projections 42 are made of an elastomeric material.

The elastic material may be, for example, plastic, rubber, spring, etc. When the first connecting portion 31 is inserted into the housing 33 and connected with the second connecting portion 32, the positioning member 40 temporarily stored in the space enclosed by the inner wall of the upper housing 331 needs to be inserted, and the protrusion 42 made of an elastic material can reduce the loss of the positioning member 40 when the protrusion breaks through the block of the step portion 334. After the positioning member 40 finishes positioning the first connecting portion 31, the protrusion 42 can be restored to the original shape, so that the positioning member 40 can be detached and reused, the assembling mode of the connecting device 30 is simplified, and the service life of the connecting device 30 is prolonged.

In some embodiments, the positioning member 40 further includes a relief portion 43, and the relief portion 43 is disposed adjacent to the protrusion 42 for providing a resilient space.

As shown in fig. 6, the escape portion 43 provides a resilient space for the protrusion 42, when the positioning member 40 needs to be inserted, the protrusion 42 abuts against the step portion 334 of the upper housing 331, and the protrusion 42 springs back into the escape portion 43, so that the positioning member 40 moves in a direction approaching the first connection portion 31 through the step portion 334, and positioning is completed. The escape portion 43 cooperates with the protrusion 42 to facilitate assembly of the positioning member 40.

In some embodiments, the inner wall is provided with a plurality of steps 334, and the plurality of steps 334 are oppositely arranged along the arrangement direction of the second connection portion 32.

The plurality of step portions 334 are oppositely arranged along the arrangement direction of the second connecting portion 32, and specifically, the plurality of step portions 334 are symmetrically arranged along two inner walls opposite to the arrangement direction of the second connecting portion 32, so that the positioning member 40 is supported and the positioning member 40 is facilitated to move along the direction close to the first connecting portion 31.

In some embodiments, the inner wall is provided with a plurality of steps 334, and the plurality of steps 334 are provided along the circumferential direction of the upper case 331.

The plurality of steps 334 are provided along the circumferential direction of the upper case 331, and the steps 334 may further support the positioning member 40 in the circumferential direction.

In some embodiments, the second connecting portion 32 includes two abutting portions 321 disposed oppositely, and the two abutting portions 321 are disposed in close contact with the first connecting portion 31 to electrically connect the first connecting portion 31 and the circuit board 50.

The two abutting portions 321 are attached to the first connecting portion 31, and the abutting portions 321 are usually made of copper and can conduct electricity. Before the first connecting portion 31 is not inserted into the housing 33, a gap is left between the two abutting portions 321, and the height of the gap is smaller than the thickness of the first connecting portion 31; after the first connecting portion 31 is inserted into the housing 33 and connected to the second connecting portion 32, the two abutting portions 321 are elastically contacted with the first connecting portion 31 to realize electrical connection.

The circuit board 50 may be, for example, a Printed Circuit Board (PCB), and the circuit board 50 may be divided into a single-sided board, a double-sided board, a four-layer board, a six-layer board, and other multi-layer circuit boards according to the number of layers of the circuit board. Wherein, the parts are concentrated on one surface, and the conducting wire is a single panel on the other surface; the two sides are provided with wiring, and a double-sided board is arranged between the two sides and is connected with a proper circuit; more single or double sided wiring boards are used as multi-layer boards, such as printed circuit boards with one double sided inner layer, two single sided outer layers or two double sided inner layers, two single sided outer layers, alternating together by a positioning system and insulating material, and conductive patterns interconnected as designed. Copper, tin, lead-tin alloy, tin-copper alloy, gold, silver and other materials are commonly used as the metal coating. Has the characteristics of bending resistance and high precision.

The two abutting portions 321 are attached to the first connecting portion 31, so that the function of connecting the first connector 31 and the circuit board 50 through one connecting device 30 is realized, and the circuit board 50 can be connected with a battery management control system, so as to achieve the purpose of switching the electric signals or the temperature signals inside the battery.

In some embodiments, the second connecting portion 32 includes a receiving cavity 322, and the receiving cavity 322 is enclosed by two abutting portions 321 to receive the front end portion 312 of the first connecting portion 31.

The two abutting portions 321 are vertically distributed, extend forward from the second connecting portion 32 in a cantilever shape, and at the front end position, the two abutting portions 321 contact the first connecting portion 31 to enclose a receiving cavity 322 for receiving the front end portion 312 of the first connecting portion 31. Illustratively, as shown in fig. 5, the two abutting portions 321 of the second connecting portion 32 extend obliquely to each other, and a thickened structure is provided at the front end so as to contact each other to form an accommodating cavity 322. The front end 312 of the first connecting portion 31 can be inserted into the accommodating cavity 322 from the joint of the two thickened structures, the two abutting portions 321 of the cantilever-shaped thickened structure are kept to be attached to the first connecting portion 31 at the front ends, and the first connecting portion 31 and the second connecting portion 32 are electrically connected through the abutting portions 321.

As shown in fig. 7, fig. 7 shows a cross-sectional view of the first connection portion 31. In some embodiments, the front end 312 of the first connecting portion 31 is folded.

The front end 312 of the first connecting portion 31 may be provided with a 51-180 degree folding structure to increase the thickness of the first connecting portion 31 and improve the strength of the insertion portion of the first connecting portion 31, thereby facilitating the overall assembly of the product and realizing the stable connection of the first connecting portion 31 and the second connecting portion 32.

In some embodiments, the second connection portion 32 further includes a lead-out portion 323, and the lead-out portion 323 is connected with the circuit board 50.

The lead portion 323 is a member that realizes electrical connection of the second connection portion 32 of the connection device 30 and the circuit board 50. Illustratively, as shown in fig. 5, one end of the lead-out portion 323 is connected to the second connection portion 32, and the other end of the lead-out portion 323 is soldered to the circuit board 50, so that signal transmission between the first connection portion 31 and the circuit board 50 is realized. The lead 323 can be made of a metal alloy, such as brass, phosphor bronze, beryllium copper, or the like.

The second connection portion 32 further includes a lead portion 323, and the signal transmission between the first connection portion 31 and the circuit board 50 is realized by connecting the lead portion 323 to the circuit board 50.

In some embodiments, the lead part 323 includes a first extension part 323a and a second extension part 323b, the first extension part 323a extending in a vertical direction, and the second extension part 323b extending in a direction close to the circuit board 50.

As shown in fig. 5, the lead part 323 may have a Z-shape, a first extending part 323a of the lead part 323 extends in a vertical direction, and a second extending part 323b of the lead part 323 extends in a direction close to the circuit board 50 and is welded to the circuit board 50, so that a welding area of the lead part 323 is ensured, a welding strength of the second connection part 32 to the circuit board 50 is ensured, and a structural strength of the second connection part 32 is further improved.

In some embodiments, the second connector 32 further includes a stop 324, the stop 324 and the housing 33 cooperating to limit the second connector 32 from disengaging from the housing 33.

The second connecting portion 32 is inserted through a corresponding hole of the housing 33, and then fixed by the blocking portion 324 in a plug-in fit with the housing 33. Specifically, the blocking portion 324 may include a plurality of pyramids or sharp edges, and the blocking portion 324 pierces the housing 33 to fix the housing, thereby restricting the movement of the second connecting portion 32.

In some embodiments, the housing 33 further includes a guide portion 335, and the guide portion 335 is used for guiding the first connection portion 31 to pass through the housing 33.

As shown in fig. 5, the housing 33 further includes a guide portion 335, and an opening of the guide portion 335 is gradually narrowed from outside to inside, so as to facilitate the first connection portion 31 to pass through the housing 33, and reduce damage to the first connection portion 31.

According to a second aspect of the present application, there is provided a battery 10 comprising: the connecting means 30 of the first aspect.

According to a third aspect of the present application, there is provided an electric device comprising: the battery 10 of the second aspect, the battery 10 being for providing electrical energy.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present disclosure, and the present disclosure should be construed as being covered by the claims and the specification. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present application is not intended to be limited to the particular embodiments disclosed herein, but rather to cover all embodiments falling within the scope of the appended claims.

Claims (19)

1. A connection device, comprising:

a housing;

a first connecting part inserted into the housing;

the second connecting part is inserted into the shell, and the first connecting part is electrically connected with the second connecting part; and

and the positioning piece is inserted into the shell and used for positioning the first connecting part relative to the shell.

2. The connecting device according to claim 1, wherein the housing comprises an upper housing and a lower housing, and the positioning member penetrates through the upper housing and is connected to the first connecting portion.

3. The connecting device as claimed in claim 2, wherein the positioning member is provided with at least two positioning posts, the first connecting portion is provided with at least two positioning holes, and the positioning posts are disposed in the positioning holes.

4. The connecting device as claimed in claim 3, wherein the lower housing is provided with a groove, and the positioning post penetrates through the positioning hole and is disposed in the groove.

5. The connecting device according to claim 2, wherein the upper housing includes a plurality of inner walls enclosing a space for accommodating the positioning member, the inner walls being provided with stepped portions.

6. The connecting device as claimed in claim 5, wherein the positioning member includes a protrusion, the protrusion is located at one end of the positioning member away from the top of the upper housing along the vertical direction, and the step is engaged with the protrusion.

7. A connection device according to claim 6, characterised in that the projection is made of an elastic material.

8. The connecting device according to claim 6, wherein the positioning member further comprises an avoiding portion disposed adjacent to the protrusion for providing a resilient space.

9. The connecting device according to claim 5, wherein the inner wall is provided with a plurality of the step portions, and the plurality of step portions are oppositely provided in an arrangement direction of the second connecting portions.

10. The connecting device according to claim 5, wherein the inner wall is provided with a plurality of the stepped portions, the plurality of the stepped portions being provided along a circumferential direction of the upper housing.

11. The connecting device according to claim 1, wherein the second connecting portion includes two abutting portions disposed oppositely, and the two abutting portions are disposed in contact with the first connecting portion to electrically connect the first connecting portion to the circuit board.

12. The connecting device according to claim 11, wherein the second connecting portion includes a receiving cavity surrounded by the two abutting portions to receive a front end portion of the first connecting portion.

13. The connection device of claim 12, wherein the front end portion is folded.

14. The connecting device according to claim 11, wherein the second connecting portion further includes a lead-out portion connected with the circuit board.

15. The connecting device according to claim 14, wherein the lead-out portion includes a first extending portion extending in a vertical direction and a second extending portion extending in a direction close to the circuit board.

16. The connection device recited in claim 1, wherein the second connection portion further comprises a stop portion that cooperates with the housing to limit disengagement of the second connection portion from the housing.

17. The connecting device according to claim 1, wherein the housing further comprises a guide portion for guiding the first connecting portion to be inserted through the housing.

18. A battery comprising a connection device according to any one of claims 1 to 17.

19. An electrical device comprising the battery of claim 18, wherein the battery is configured to provide electrical energy.

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