CN220510193U - Output electrode protection device, battery module, battery and electric equipment - Google Patents

Abstract

The application discloses output electrode protection device, battery module, battery and consumer belongs to battery technology field. The application discloses output protection device is used for protecting battery module's output, includes: a base having a first wall and a second wall, the first wall and the second wall being disposed opposite in a first direction; a protective cover for cooperation with the base, at least a portion of the protective cover being disposed opposite the base in a second direction, the protective cover having a third wall and a fourth wall disposed opposite the third wall in a first direction, the third wall and the fourth wall being spaced apart in the first direction; the first wall and the third wall are matched to limit the protective cover to be separated from the base in the second direction, the second wall and the fourth wall are matched to limit the protective cover to be separated from the base in the first direction and the third direction, and the first direction, the second direction and the third direction are intersected. The technical scheme of the application improves the reliability of the battery.

Description

Output electrode protection device, battery module, battery and electric equipment

Technical Field

The application relates to the technical field of batteries, in particular to an output electrode protection device, a battery module, a battery and electric equipment.

Background

The battery is widely applied to the fields of portable electronic equipment, electric vehicles, electric tools, unmanned aerial vehicles, energy storage equipment and the like. The reliability of the battery is a non-negligible problem in the manufacturing process of the battery. Therefore, how to improve the reliability of the battery is a technical problem to be solved in the battery technology.

Disclosure of Invention

In view of the above-mentioned problem, the application provides an output electrode protection device, battery module, battery and consumer, can play the guard action to battery module's output electrode, improve the reliability of battery.

In a first aspect, the present application provides an output electrode protection device for protecting an output electrode of a battery module, including: a base having a first wall and a second wall, the first wall and the second wall being oppositely disposed in a first direction; a protective cover for cooperation with the base, at least a portion of the protective cover being disposed opposite the base in a second direction, the protective cover having a third wall and a fourth wall, the third wall and the fourth wall being disposed opposite in the first direction and the third wall and the fourth wall being spaced apart in the first direction; the first wall cooperates with the third wall to limit the protective cover from being separated from the base in the second direction, the second wall cooperates with the fourth wall to limit the protective cover from being separated from the base in the first direction and the third direction, and the first direction, the second direction and the third direction are intersected in pairs.

In the technical scheme of the embodiment of the application, the base is provided with the first wall and the second wall which are oppositely arranged, the protection cover is provided with the third wall and the fourth wall which are oppositely arranged, the first wall and the third wall are matched to form a limiting structure in the second direction, the second wall and the fourth wall are matched to form a limiting structure in the first direction and the third direction, the stability of connection between the base and the protection cover is ensured, the protection failure caused by the fact that the protection cover is separated from the base is avoided, and the safety of the output electrode is improved; after the assembly is finished, the first wall and the third wall have no force in the first direction and the third direction, so that the pressure bearing effect of the protective cover or the base under the action of external force is improved, and the damage failure probability of the protective cover or the base is reduced; the assembled second wall and fourth wall do not have the action of force in the second direction, only the limitation of the first wall and the third wall in the second direction is needed to be contacted, and the protective cover is convenient to detach from the base.

In some embodiments, one of the first wall and the third wall is provided with a catch, and the other is provided with a catch, the catch cooperating with the catch to limit the protective cover from being disengaged from the base in the second direction. Through the mode of buckle and draw-in groove, realize the swift installation cooperation of first wall and third wall.

In some embodiments, the buckle comprises a first abutting surface and a guide inclined surface connected with the first abutting surface, and in the second direction, the first abutting surface abuts against the inner side surface of the clamping groove; the protective cover is mounted on the base in the second direction, and in the first direction, a distance between the guide slope and the first wall is gradually reduced in a direction in which the protective cover is mounted on the base. When the third wall contacts and moves with the guide inclined plane in the assembly process of the buckle and the clamping groove, the third wall contacts with the part of the guide inclined plane, which is closer to the first wall, and the guide inclined plane plays a role in guiding the third wall, so that the first wall and the third wall are easier to deform in the direction away from each other, and the buckle is easier to enter the clamping groove.

In some embodiments, the first walls are two and arranged in the third direction, and the third walls are two and arranged in the third direction, each of the first walls mating with a corresponding one of the third walls. The third walls are arranged in two, the contact area of the third walls and the first walls is increased, the two third walls are independent relatively, and the stability of connection between the first walls and the third walls is improved.

In some embodiments, one of the second wall and the fourth wall is provided with a first groove extending in the second direction, and the other is provided with a protrusion that cooperates with the first groove to limit the protective cover from being disengaged from the base in the first direction and the third direction. Through first recess and bellied structural style, guarantee when first direction and third direction form limit structure, can realize the swift assembly of second wall and fourth wall.

In some embodiments, a second abutment surface is provided on the protrusion, and a third abutment surface is provided on the first groove, the second abutment surface and the third abutment surface abutting in the first direction; the protrusion is provided with a fourth abutting surface, the first groove is provided with a fifth abutting surface, and the fourth abutting surface and the fifth abutting surface are abutted in the third direction. Through the cooperation of second and third stopping face, guarantee visor and base can not take place relative movement in first direction, through fourth stopping face and the cooperation of fifth stopping face, guarantee visor and base can not take place relative movement in the third direction to improve visor and base's connection stability.

In some embodiments, the second walls are two and arranged in the third direction, and the fourth walls are two and arranged in the third direction, each of the second walls mating with a corresponding fourth wall; along the third direction, two fourth abutting surfaces are located between two fifth abutting surfaces, or two fifth abutting surfaces are located between two fourth abutting surfaces. The number of the second wall and the fourth wall is two, so that the stability of the matching is improved; the two fourth stop surfaces are positioned between the two fifth stop surfaces or the two fifth stop surfaces are positioned between the two fourth stop surfaces, so that the limit in the third direction is formed conveniently, and the assembly of the protective cover and the base is facilitated.

In some embodiments, the projected area of the second abutment surface and the third abutment surface in the third direction is greater than zero; and/or the projection area of the fourth abutting surface and the fifth abutting surface in the first direction is larger than zero. So that the first groove and the protrusion form bidirectional limit in the first direction or bidirectional limit in the third direction, and the connection stability of the protective cover and the base is improved.

In some embodiments, the projected area of the second abutment surface and the third abutment surface in the third direction is equal to zero; the projection area of the fourth abutting surface and the fifth abutting surface in the first direction is equal to zero. And the other structural form of the protrusion and the first groove is provided, so that the limit of the protective cover and the base in the third direction and the first direction respectively is realized.

In some embodiments, in the first direction, the first wall and the third wall abut to limit separation of the second abutment surface and the third abutment surface in a direction away from each other. The protective cover is used for being matched with the second abutting surface and the third abutting surface to realize bidirectional limiting of the protective cover and the base in the first direction.

In some embodiments, the first groove extends through the second wall toward a side of the protective cover; or the first groove penetrates through the fourth wall to face the side face of the base. In the process of being convenient for visor and base installation, the arch enters into in the first recess, improves installation effectiveness.

In some embodiments, the height of the first wall in the second direction is less than the height of the second wall. Through reducing the height of second wall, improve the structural strength of first wall and base junction, make the junction of first wall and base be difficult for taking place the fracture, reduce the probability that first wall fracture was lost efficacy.

In some embodiments, the second wall is provided with the first groove and the fourth wall is provided with the protrusion; the protective cover is further provided with first ribs spaced apart from the protrusions to form second grooves that are in snap fit with a portion of the second wall. Through addding first rib, when first recess and protruding complex, the second recess and the partial joint of second wall increase complex structure, improve the connection stability of second wall and fourth wall.

In some embodiments, the inner side wall of the second groove is provided with a guiding rib extending in the second direction. Plays the effect of supplementary direction to second wall and fourth wall assembly in-process through the direction rib, can reduce the area of contact of second recess and second wall joint portion simultaneously, reduces frictional force, improves the assembly efficiency of second wall and fourth wall.

In some embodiments, the first wall is two and spaced apart in the third direction to form a first opening and the second wall is two and spaced apart in the third direction to form a second opening. By forming the first opening and the second opening, a space for installing the guide bar and the copper bar of the output electrode is reserved.

In some embodiments, the protective cover is provided with a first baffle that partially closes the first opening and a second baffle that partially closes the second opening. Through setting up first baffle and second baffle, when can making the water conservancy diversion row and the copper bar normal installation of output pole, carry out partial closure to first opening and second opening, guarantee insulating effect.

In a second aspect, the present application provides a battery module including the output electrode protection device of the above embodiment.

In a third aspect, the present application provides a battery comprising the battery module of the above embodiment.

In a fourth aspect, the present application provides a powered device comprising a battery of the above embodiments for providing electrical energy.

The foregoing description is merely an overview of the technical solutions of the present application, and may be implemented according to the content of the specification in order to make the technical means of the present application more clearly understood, and in order to make other objects, features and advantages of the present application more understandable, the following specific embodiments of the present application are specifically described below.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to designate like parts throughout the accompanying drawings. In the drawings:

FIG. 1 is a schematic illustration of a vehicle according to some embodiments of the present application;

FIG. 2 is an exploded view of a battery according to some embodiments of the present application;

FIG. 3 is a schematic view of an output electrode protection device according to some embodiments of the present application;

FIG. 4 is a schematic view of the structure of FIG. 3 with the protective cover hidden;

FIG. 5 is an enlarged schematic view of the structure shown at A in FIG. 4;

FIG. 6 is a schematic cross-sectional view of the structure of FIG. 3 with a second direction as the viewing direction;

FIG. 7 is an enlarged schematic view of the structure shown at B in FIG. 6;

FIG. 8 is another schematic diagram of the structure of FIG. 7 in some embodiments of the application;

FIG. 9 is a schematic top view of a base according to some embodiments of the present application;

FIG. 10 is a schematic diagram of a protective cover structure according to some embodiments of the present application.

Reference numerals in the specific embodiments are as follows:

1000-vehicle; 200-a controller; 300-motor; 100-cell; 11-a box body; 111-a first part; 112-a second portion; 20-a battery module; 30-an output electrode protection device; 31-a base; 311-a first wall; 312-a second wall; 32-a protective cover; 321-a third wall; 3211-a clamping groove; 322-fourth wall; 33-a first baffle; 331-a first opening; 332-a second opening; 40-clamping buckle; 41-a first abutment surface; 42-guiding inclined plane; 50-bulge; 51-a second abutment surface; 52-fourth stop surface; 60-a first groove; 61-a third abutment surface; 62-a fifth abutment surface; 70-first ribs; 71-a second groove; 72-guiding ribs; 80-diversion rows; 90-copper bars; x-a first direction; y-third direction; z-second direction.

Detailed Description

Embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical solutions of the present application, and thus are only examples, and are not intended to limit the scope of protection 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 herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description and claims of the present application and in the description of the figures above are intended to cover non-exclusive inclusions.

In the description of the embodiments of the present application, the technical terms "first," "second," etc. are used merely to distinguish between different objects and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, a particular order or a primary or secondary relationship. In the description of the embodiments of the present application, the meaning of "plurality" is two or more unless explicitly defined otherwise.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of such phrases 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. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

In the description of the embodiments of the present application, the term "plurality" refers to more than two (including two).

In the description of the embodiments of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; or may be mechanically or electrically connected. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to the specific circumstances.

In the prior art, generally, a battery module comprises a battery cell, a guide bar and an end plate, wherein the end plate is positioned at the outer side of the battery cell at the end part of the battery module, electric connection is realized between the battery cells through the guide bar, at least one guide bar is arranged to extend out of the battery cell and extend to the end plate, one end of the bar-shaped copper bar is electrically connected to form an output pole of the battery module, and the other end of the copper bar is electrically connected with the guide bar in another battery module, so that electric connection between the battery modules is constructed.

The insulating protection is needed to be carried out on the junction of the guide bar and the copper bar, the insulating protection device generally comprises a base and a top cover, the base is installed on the upper end face of the end plate, the base is used for supporting the guide bar and the copper bar, the junction of the guide bar and the copper bar is located on the base, the top cover is arranged on the base, and the top cover and the base are matched to form a protection structure for the output electrode of the guide bar and the copper bar.

The top cap is connected with the connection mode of base and adopts four sets of buckle formula to dismantle the connection generally, is provided with the draw-in groove on the both sides inner wall of base, is provided with on the top cap be used for with draw-in groove complex buckle, in order to guarantee the stability after top cap and the base assembly, the buckle is interference fit with the draw-in groove, and the effect of outside effect is applyed to the base to the buckle of both sides. When need dismantle base and top cap, need apply external force to the buckle of both sides, make the buckle break away from the draw-in groove, dismantle time and energy to when in order to improve the connection stability of base and top cap, when increasing the quantity of buckle and draw-in groove, complex operation is laborious more obvious. Because the top cap is two components of relative independence with the base, buckle and draw-in groove interference fit, the elasticity of buckle is poor, and the both sides wall of base receives outside effect, and the top cap appears colliding with etc. when installing or battery module transportation in-process, and the outer wall of base easily breaks, makes insulation protection inefficacy.

Based on the above consideration, by reducing the number of the buckles, one side wall is connected through the buckles, the base and the top cover are prevented from being separated in the second direction, the other opposite side wall forms a limit through the cooperation between the walls, the base and the top cover are prevented from being separated in the horizontal direction, and the connection is stable, meanwhile, the number of the buckles is reduced, interference fit is not needed between the buckles and the clamping grooves, and the disassembly is more convenient; the outer wall of base has lost the effect of the thrust of buckle to through reducing the height of base outer wall, can effectively reduce its cracked risk.

The embodiment of the application provides an electric device using a battery 100 as a power source, and the electric device can be, but is not limited to, a mobile phone, a tablet, a notebook computer, an electric toy, an electric tool, a battery car, an electric automobile, a ship, a spacecraft and the like. Among them, the electric toy may include fixed or mobile electric toys, such as game machines, electric car toys, electric ship toys, electric plane toys, and the like, and the spacecraft may include planes, rockets, space planes, and spacecraft, and the like.

For convenience of description, the following embodiments take a powered device according to an embodiment of the present application as an example of the vehicle 1000.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a vehicle according to some embodiments of the present application. The vehicle 1000 may be a fuel oil vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or a range-extended vehicle. The battery 100 is provided in the interior of the vehicle 1000, and the battery 100 may be provided at the bottom or the head or the tail of the vehicle 1000. The battery 100 may be used for power supply of the vehicle 1000, for example, the battery 100 may be used as an operating power source of the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300, the controller 200 being configured to control the battery 100 to power the motor 300, for example, for operating power requirements during start-up, navigation, and travel of the vehicle 1000.

In some embodiments of the present application, battery 100 may not only serve as an operating power source for vehicle 1000, but may also serve as a driving power source for vehicle 1000, instead of or in part instead of fuel oil or natural gas, to provide driving power for vehicle 1000.

Referring to fig. 2, fig. 2 is an exploded view of a battery according to some embodiments of the present application. The battery 100 includes a case 11 and a battery module 20, and the battery module 20 is accommodated in the case 11. The case 11 is used to provide an accommodating space for the battery module 20, and the case 11 may have various structures. In some embodiments, the case 11 may include a first portion 111 and a second portion 112, the first portion 111 and the second portion 112 being overlapped with each other, the first portion 111 and the second portion 112 together defining an accommodating space for accommodating the battery module 20. The second portion 112 may be a hollow structure with one end opened, the first portion 111 may be a plate-shaped structure, and the first portion 111 covers the opening side of the second portion 112, so that the first portion 111 and the second portion 112 together define an accommodating space; the first portion 111 and the second portion 112 may also be hollow structures with one side open, and the open side of the first portion 111 is covered with the open side of the second portion 112. Of course, the case 11 formed by the first portion 111 and the second portion 112 may be of various shapes, such as a cylinder, a rectangular parallelepiped, or the like.

In the battery 100, the battery modules 20 may be multiple, and the battery modules 20 may be formed by connecting multiple battery 100 units in series or parallel or in series-parallel, where series-parallel refers to that multiple battery 100 units are connected in series or parallel, and then the multiple battery modules 20 are connected in series or parallel or in series-parallel to form a whole and are contained in the case 11. The battery 100 may further include other structures, for example, the battery 100 may further include a bus member for making electrical connection between the plurality of battery modules 20.

Wherein, each battery 100 unit may be a secondary battery 100 or a primary battery 100; but not limited to, lithium sulfur battery 100, sodium ion battery 100, or magnesium ion battery 100. The battery 100 cells may be in the shape of a cylinder, a flat body, a rectangular parallelepiped, or other shapes, etc.

Reference is made to fig. 3, 4 and 6, according to some embodiments of the present application. Fig. 3 is a schematic structural diagram of an output electrode protection device according to some embodiments of the present application, fig. 4 is a schematic structural diagram of the protection cover hidden in fig. 3, and fig. 6 is a schematic sectional structural diagram of the protection cover in fig. 3 with a second direction as a viewing direction. Embodiments of the present application provide an output pole protection device 30. The output electrode protection device 30 is used for protecting the output electrode of the battery module 20, and the output electrode protection device 30 includes a base 31 and a protective cover 32. The base 31 has a first wall 311 and a second wall 312, the first wall 311 and the second wall 312 being disposed opposite to each other in the first direction X. The protection cover 32 is configured to cooperate with the base 31, and at least a portion of the protection cover 32 is disposed opposite to the base 31 in the second direction Z. The protective cover 32 has a third wall 321 and a fourth wall 322, the third wall 321 and the fourth wall 322 being disposed opposite in the first direction X, and the third wall 321 and the fourth wall 322 being spaced apart in the first direction X. The first wall 311 cooperates with the third wall 321 to limit the removal of the protective cover 32 from the base 31 in the second direction Z. The second wall 312 cooperates with the fourth wall 322 to limit the removal of the protective cover 32 from the base 31 in the first direction X and the third direction Y. The first direction X, the second direction Z and the third direction Y are intersected in pairs.

As shown in fig. 4, the first direction X is the X direction, the second direction Z is the Z direction, and the third direction Y is the Y direction.

The battery module 20 includes a battery cell, a guide bar 80 and an end plate, wherein the end plate is located at the outer side of the battery cell at the end of the battery module 20, the battery cells are electrically connected through the guide bar 80, at least one guide bar 80 is provided to extend out of the battery cell and extend onto the end plate, the guide bar 80 extending onto the end plate is electrically connected with one end of a copper bar 90 to form an output electrode of the battery module 20, and the other end of the copper bar 90 is electrically connected with the guide bar 80 in another battery module 20.

The base 31 is installed on the end plate of the battery module 20, provides a supporting platform for the installation of the guide bar 80 and the copper bar 90 of the output electrode, the base 31 can be connected with the end plate through bolts, coaxial through holes are formed in the base 31, the guide bar 80 and the copper bar 90 in a penetrating mode, the bolts penetrate through the through holes to be connected with the end plate in a threaded mode, and the base 31, the guide bar 80 and the copper bar 90 are synchronously fixed.

The protection cover 32 and the base 31 are made of insulating materials, the protection cover 32 is used for being matched with the base 31 to form a relatively insulating cavity, and the connecting end of the output electrode is accommodated in the cavity to play a role in insulating and protecting the connecting end of the output electrode.

Through the cooperation of the first wall 311 on the base 31 and the third wall 321 on the protective cover 32, a limiting structure of the protective cover 32 and the base 31 in the second direction Z is formed, and the protective cover 32 and the base 31 are limited to be separated relatively in the second direction Z; by the cooperation of the second wall 312 on the base 31 and the fourth wall 322 of the protective cover 32, a limiting structure of the protective cover 32 and the base 31 in the first direction X and the third direction Y is formed, and the protective cover 32 and the base 31 are limited from being separated relatively in the first direction X and the third direction Y. The first wall 311 and the second wall 312 forming the limiting structure on the base 31 are arranged at intervals along the first direction X, and the first direction X, the second direction Z and the third direction Y are intersected in pairs, so that the connection stability of the protective cover 32 and the base 31 is realized, and the stability of the base 31 and the protective cover 32 after being assembled is improved. The first wall 311 and the third wall 321 form a limiting structure in the second direction Z, no force in the first direction X needs to be formed between the first wall 311 and the third wall 321, that is, the first wall 311 or the third wall 321 does not need to receive thrust in the first direction X, the protection cover 32 is reduced to receive external force, the external force acts and is matched with the thrust, the stress is concentrated at the joint of the first wall 311 and the base 31, and the probability of fracture of the first wall 311 is reduced. The second wall 312 and the fourth wall 322 form a limiting structure in the first direction X and the third direction Y, the second wall 312 and the fourth wall 322 do not need to form a limiting structure in the second direction Z, and when the protective cover 32 and the base 31 are detached, only the limiting of the first wall 311 and the third wall 321 is released, so that the detachment efficiency is improved.

Reference is made to fig. 3-5, according to some embodiments of the present application. Fig. 5 is an enlarged schematic view of the structure at a in fig. 4. One of the first wall 311 and the third wall 321 is provided with a catch 40, and the other is provided with a catch groove 3211. The catch 40 cooperates with the catch slot 3211 to limit the detachment of the protective cover 32 from the chassis 31 in the second direction Z.

The specific setting positions of the clip 40 clip groove 3211 may be: the first wall 311 is provided with a buckle 40 (as shown in fig. 3 to 5), at this time, the buckle 40 is disposed on a side wall of the first wall 311 away from the second wall 312 along the first direction X, and the third wall 321 is provided with a slot 3211 corresponding to the buckle 40. It is also possible to provide a catch 40 (not shown in the drawings) on the third wall 321 and a catch groove 3211 corresponding to the catch 40 on the first wall 311.

Through the matching manner of the buckle 40 and the slot 3211, a limit structure in the second direction Z can be formed between the protective cover 32 and the base 31, the protective cover 32 is limited to be separated from the base 31 in the second direction Z, and no force can be generated between the buckle 40 and the slot 3211 in the first direction X and the third direction Y after the assembly is completed.

Reference is made to fig. 4 and 5, according to some embodiments of the present application. The catch 40 comprises a first abutment surface 41 and a guide ramp 42 connected to the first abutment surface 41. In the second direction Z, the first abutment surface 41 abuts against the inner side surface of the engagement groove 3211. The protective cover 32 is mounted on the base 31 in the second direction Z, and the distance between the guide slope 42 and the first wall 311 in the first direction X is gradually reduced in the direction in which the protective cover 32 is mounted on the base 31.

The buckle 40 and the first wall 311 may be integrally formed, or may be connected by one of welding, bonding and screwing. In the second direction Z, the first abutment surface 41 is located at the lower end of the guide inclined surface 42, the guide inclined surface 42 is an inclined surface, and the guide inclined surface 42 is inclined in a direction gradually away from the first wall 311 from top to bottom in the second direction Z.

"the protection cover 32 is mounted on the base 31 along the second direction Z", the movement direction of the protection cover 32 is: in a direction approaching the base 31 in the second direction Z.

The guide slope 42 allows the clip 40 to more easily enter the slot 3211, facilitating the mounting of the protective cover 32 to the base 31. When the protective cover 32 is mounted on the base 31, before the buckle 40 enters the clamping groove 3211 to form a limiting structure, the third wall 321 of the protective cover 32 is firstly contacted with the guide inclined surface 42 of the protrusion 50, the inclined guide inclined surface 42 applies the thrust force in the second direction Z to the third wall 321 or the first wall 311, so that the third wall 321 or the first wall 311 is elastically deformed, the third wall 321 or the first wall 311 keeps an elastic deformation state in the continuous moving process of the protective cover 32, and after the buckle 40 enters the clamping groove 3211, the elastic deformation is restored, and at the moment, the first abutting surface 41 abuts against the wall surface of the clamping groove 3211 to limit the protective cover 32 to be separated from the base 31 in the second direction Z.

According to some embodiments of the present application, referring to fig. 3 and 4, the first walls 311 are two and arranged in the third direction Y, and the third walls 321 are two and arranged in the third direction Y, and each first wall 311 is mated with a corresponding third wall 321.

The two first walls 311 lie in the same plane in the third direction Y, and the two third walls 321 lie in the same plane in the third direction Y. The first wall 311 and the third wall 321 at least partially overlap in the first direction X to enable the catch 40 and the catch groove 3211 to mate.

By providing two first walls 311 and two third walls 321, the number of the clamping grooves 3211 of the clamping buckle 40 is increased, and the connection stability of the first walls 311 and the third walls 321 is improved. The two first walls 311 are arranged at intervals along the third direction Y, the two third walls 321 are arranged at intervals along the third direction Y, the distance between the two buckles 40 located on the third direction Y is increased, and the assembly stability of the first walls 311 and the third walls 321 is further improved.

Reference is made to fig. 6 and 7, according to some embodiments of the present application. Fig. 6 is a schematic cross-sectional view of fig. 3 in the second direction, and fig. 7 is an enlarged schematic view of fig. 6 at B. One of the second wall 312 and the fourth wall 322 is provided with a first groove 60 extending in the second direction Z, and the other is provided with a protrusion 50. The protrusion 50 cooperates with the first recess 60 to limit the removal of the protective cover 32 from the base 31 in the first direction X and the third direction Y.

The protrusions 50 and the first grooves 60 are arranged in such a manner that the second wall 312 is provided with the first grooves 60 and the fourth wall 322 is provided with the protrusions 50 (structure shown in fig. 7) that are engaged with the first grooves 60. The arrangement of the protrusion 50 and the first groove 60 may be as follows: the fourth wall 322 is provided with a first recess 60 and the second wall 312 is provided with a protrusion 50 (this arrangement is not shown in the figures) cooperating with the first recess 60.

By matching the protrusion 50 with the first groove 60, the limit of the protection cover 32 and the base 31 in the first direction X and the third direction Y is realized, and the protection cover 32 is limited to be separated from the base 31 along the first direction X or the third direction Y. When the protection cover 32 needs to be detached from the base 31, the protection cover 32 is separated from the base 31 along the second direction Z, and the second wall 312 and the fourth wall 322 do not have the limiting function of the second direction Z, so that the protection cover 32 and the base 31 can be smoothly separated without separate unlocking, and the detachment efficiency of the protection cover 32 and the base 31 is improved.

Referring to fig. 7, and further referring to fig. 9 and 10, fig. 9 is a schematic top view of a base according to some embodiments of the present application. The projection 50 is provided with a second abutment surface 51 and the first recess 60 is provided with a third abutment surface 61, the second abutment surface 51 and the third abutment surface 61 being abutted in the first direction X. The projection 50 is provided with a fourth abutment surface 52, the first recess 60 is provided with a fifth abutment surface 62, and the fourth abutment surface 52 and the fifth abutment surface 62 are abutted in the third direction Y.

The second abutment surface 51 on the protrusion 50 is connected with the fourth abutment surface 52, the third abutment surface 61 of the first recess 60 is connected with the fifth abutment surface 62, the second abutment surface 51 and the third abutment surface 61 can be in contact with each other after the protective cover 32 and the base 31 are assembled, the fourth abutment surface 52 and the fifth abutment surface 62 can be in contact with each other, and when the protective cover 32 and the base 31 are not subjected to external force, they can have no interaction of force, and only when the protective cover 32 and the base 31 are subjected to external force, a limiting effect of the first direction X and the third direction Y can be formed, so that the relative movement of the protective cover 32 and the base 31 in the first direction X and the third direction Y is prevented.

The second wall 312 and the fourth wall 322 can simultaneously realize the limit in the first direction X and the third direction Y by the mutual matching of the second abutting surface 51 and the third abutting surface 61 and the mutual matching of the fourth abutting surface 52 and the fifth abutting surface 62.

According to some embodiments of the present application, the second walls 312 are two and arranged in the third direction Y, and the fourth walls 322 are two and arranged in the third direction Y, and each second wall 312 mates with a corresponding fourth wall 322. In the third direction Y, in some embodiments, the two fourth abutment surfaces 52 may be located between the two fifth abutment surfaces 62, or in other embodiments, the two fifth abutment surfaces 62 may also be located between the two fourth abutment surfaces 52.

The two second walls 312 lie in the same plane in the third direction Y, and the two fourth walls 322 lie in the same plane in the third direction Y, with the projections of the corresponding second walls 312 and fourth walls 322 in the first direction X at least partially coinciding. In some embodiments, when the two fifth abutting surfaces 62 are located between the two fourth abutting surfaces 52, the assembly schematic of the second wall 312 and the fourth wall 322 is shown in fig. 6, the fourth wall 322 on the protection cover 32 is shown in fig. 9, the second wall 312 on the base 31 is shown in fig. 10, and fig. 10 is a schematic diagram of the protection cover structure according to some embodiments of the present application. In other embodiments, the structural view of the two fourth abutment surfaces 52 between the two fifth abutment surfaces 62 is not shown in the figures.

By locating the two fourth abutment surfaces 52 between the two fifth abutment surfaces 62 or locating the two fifth abutment surfaces 62 between the two fourth abutment surfaces 52, when the second wall 312 and the fourth wall 322 form a limiting structure in the third direction Y, the contact surface that limits the relative movement between the protective cover 32 and the base 31 is distributed on the two spaced apart second walls 312 or fourth walls 322, so that the stress is more balanced and the contact stability is improved.

According to some embodiments of the present application, the projected areas of the second and third abutment surfaces 51, 61 in the third direction Y are greater than zero, while the projected areas of the fourth and fifth abutment surfaces 52, 62 in the first direction X are greater than zero. The projected areas of the second abutment surface 51 and the third abutment surface 61 in the third direction Y are greater than zero, or the projected areas of the fourth abutment surface 52 and the fifth abutment surface 62 in the first direction X are greater than zero.

The projected area relationship of the second abutment surface 51 and the third abutment surface 61 in the third direction Y is similar to the projected area relationship of the fourth abutment surface 52 and the fifth abutment surface 62 in the first direction X. The following description will now be given by taking the example that the projection area of the fourth abutting surface 52 and the fifth abutting surface 62 in the first direction X is larger than zero: fig. 7 is an enlarged schematic view of fig. 6 at B, where the projection area is larger than zero, and includes two cases, one is that the included angle formed between the second abutting surface 51 and the fourth abutting surface 52 of the protrusion 50 is an acute angle, and the other is that the included angle formed between the second abutting surface 51 and the fourth abutting surface 52 of the protrusion 50 is an obtuse angle, and fig. 7 is a schematic view of the structure when the included angle is an acute angle.

By setting the projection area larger than zero, the protrusion 50 forms a structure similar to a sharp angle, and after the protrusion 50 enters the first groove 60, the protrusion 50 and the first groove 60 can form bidirectional limit in the first direction X or the third direction Y, so that the assembly stability of the protective cover 32 and the base 31 is improved.

Fig. 8 is another schematic diagram of the structure of fig. 7 in some embodiments of the present application, as shown in fig. 8, according to some embodiments of the present application. The projected areas of the second and third abutment surfaces 51, 61 in the third direction Y are equal to zero, and the projected areas of the fourth and fifth abutment surfaces 52, 62 in the first direction X are equal to zero.

The projection area is zero, that is, the included angle formed by the second abutting surface 51 and the fourth abutting surface 52 is ninety degrees, and the included angle formed by the third abutting surface 61 and the fifth abutting surface 62 is ninety degrees.

By setting the projection area to zero, the processing difficulty of the first groove 60 is reduced. The contact surface bonding degree between the second abutting surface 51 and the third abutting surface 61, and between the fourth abutting surface 52 and the fifth abutting surface 62 can be made higher, and the assembling stability of the second wall 312 and the fourth wall 322 can be improved.

According to some embodiments of the present application, in the first direction X, the first wall 311 and the third wall 321 abut to limit the separation of the second abutment surface 51 and the third abutment surface 61 toward a direction away from each other.

The first wall 311 and the third wall 321 at least partially overlap in the first direction X, so that the first wall 311 and the third wall 321 can form a limit, and are limited to separate from each other in the first direction X.

By limiting the matching relationship between the first wall 311 and the third wall 321 for matching the condition that the projection areas of the second abutting surface 51 and the third abutting surface 61 in the third direction Y are equal to zero, and the projection areas of the fourth abutting surface 52 and the fifth abutting surface 62 in the first direction X are equal to zero, the protective cover 32 and the base 31 form bidirectional limit in the first direction X, the condition that the protective cover 32 and the base 31 relatively move in the first direction X and even are separated from each other is reduced, and the assembly stability of the protective cover 32 and the base 31 is improved.

According to some embodiments of the present application, the first groove 60 extends through the second wall 312 toward the side of the protective cover 32 or the first groove 60 extends through the fourth wall 322 toward the side of the base 31.

When the first grooves 60 are provided on the second walls 312, as shown in fig. 7 and 10, two second grooves 71 are provided on the outer sides of the two second walls 312, and the outer sides of the two first grooves 60 penetrate the outer walls of the two second walls 312. When the first recess 60 is provided in the fourth wall 322, the construction principle is similar, and the construction thereof is not shown in the drawings.

By allowing the outer side of the first groove 60 to penetrate through the outer wall of the second wall 312, the protrusion 50 enters into the first groove 60 to be matched in the process of installing the protection cover 32, so that the assembly efficiency is improved.

According to some embodiments of the present application, as shown in fig. 4, the height of the first wall 311 in the second direction Z is smaller than the height of the second wall 312.

The height of the first wall 311 is reduced, and the upper end surface of the second wall 312 in the second direction Z can be used to mate with the protective cover 32.

By lowering the height of the first wall 311, the height of the second wall 312 is not changed, the protecting cover 32 and the base 31 can still form a cavity enough to accommodate the connection end of the output electrode, the height of the first wall 311 is lowered, the limit structure of the first wall 311 and the protecting cover 32 in the second direction Z is also lowered, the strength of the first wall 311 can be improved, and the crack resistance of the connection part of the first wall 311 and the base 31 can be improved.

According to some embodiments of the present application, as shown in fig. 7, the second wall 312 is provided with a first groove 60 and the fourth wall 322 is provided with a protrusion 50. The protective cover 32 is also provided with first ribs 70, the first ribs 70 being spaced apart from the projection 50 to form second grooves 71, the second grooves 71 being snap-fit with a portion of the second wall 312.

The first rib 70 may be integrally formed with the protective cover 32, and the first rib 70 may be elongated or L-shaped.

By additionally providing the second groove 71, the first groove 60 is matched with the protrusion 50, the second groove 71 is clamped with a part of the second wall 312, the contact position and the contact area for forming the limiting structure are increased, and the assembly stability of the second wall 312 and the fourth wall 322 is improved.

According to some embodiments of the present application, the inner side wall of the second groove 71 is provided with a guiding rib 72 extending in the second direction Z.

The guide rib 72 may be provided at a side wall of the first rib 70 or at an outer wall of the protrusion 50. The guide rib 72 may be one or a plurality of guide ribs may be disposed at intervals along the same direction, and a portion of the guide rib 72 contacting the second wall 312 may be an arc surface.

By providing the guide rib 72, the protective cover 32 is guided during installation, and the contact area between the second wall 312 and the second groove 71 is reduced, thereby reducing friction.

According to some embodiments of the present application, the first walls 311 are two and spaced apart in the third direction Y to form the first openings 331, and the second walls 312 are two and spaced apart in the third direction Y to form the second openings 332.

The first opening 331 is a reserved space into which the copper bar 90 of the output electrode extends, and the second opening 332 is a reserved space into which the guide bar 80 of the output electrode extends.

By providing the first opening 331 and the second opening 332, the guide bar 80 and the copper bar 90 of the output electrode can smoothly extend into the base 31 for installation.

According to some embodiments of the present application, the protective cover 32 is provided with a first baffle 33 closing part of the first opening 331 and a second baffle closing part of the second opening 332.

The first baffle 33 and the second baffle can respectively partially close the first opening 331 and the second opening 332, so that the guide bar 80 and the copper bar 90 of the output electrode can pass smoothly, and meanwhile, the first baffle 33 and the second baffle can partially close the first opening 331 and the second opening 332, thereby reducing the probability of failure of the insulation protection function of the protective cover 32.

The first baffle 33 and the second baffle each comprise a body portion and a weakened portion, the second baffle not being shown in the figures. The body and the protective cover 32 are connected to each other, one end of the weakened portion is connected to the body through a weakened structure, and the other end is a free end, and the weakened portion can be separated from the body by applying an external force to the weakened portion to break the connection between the weakened portion and the body at the connection between the weakened structure. The weakening structure may be weakening holes penetrating in a thickness direction (first direction X) of the first baffle or the second veneer, and the number of weakening holes may be plural, and the plurality of weakening holes are arranged in the third direction Y. Before the protective cover 32 is assembled to the base 31, when the guide bar 80 and the copper bar 90 are not located in the first opening 331 and the second opening 332, the weakened portion and the body portion remain connected, so as to be capable of completely blocking the first opening 331 and the second opening 332. When the guide bar 80 and the copper bar 90 are located in the corresponding first opening 331 and the second opening 332, an external force is applied to the weakened portion to separate the weakened portion from the body portion, the guide bar 80 and the copper bar 90 can extend out of the first opening 331 and the second opening 332 from the notch formed by the missing weakened portion, and the body portion can still block the first opening 331 and the second opening 332, so that the protection effect is achieved for the inside of the protection cover 32. Alternatively, the number of the second openings may be set to be plural, and when the copper bar 90 needs to pass through the corresponding second opening 332, the weakened portion of the first shutter 33 at the corresponding position is disengaged from the body portion, and the second opening 332, whose weakened portion of the corresponding first shutter 33 remains connected to the body portion, is not required.

According to some embodiments of the present application, the present application further provides a battery module 20, including the output electrode protection device 30 according to any one of the above aspects.

According to some embodiments of the present application, there is also provided a battery 100 including the battery module 20 described in any one of the above aspects.

According to some embodiments of the present application, there is further provided a powered device, including the battery 100 according to any of the above aspects, and the battery 100 is configured to provide power to the powered device.

The powered device may be any of the devices or systems described above that employ battery 100.

According to some embodiments of the present application, there is provided an output pole protection device 30, including a base 31 and a protective cover 32. The base 31 has a first wall 311 and a second wall 312 disposed opposite to each other in the first direction X, and the protective cover 32 has a third wall 321 and a fourth wall 322 disposed opposite to each other in the first direction X. The first wall 311 and the third wall 321 are matched with each other in the direction of the buckle 40 and the clamping groove 3211 to form a limiting structure in the second direction Z so as to limit the protection rod to be separated from the base 31 along the second direction Z. One of the second wall 312 and the fourth wall 322 is provided with a protrusion 50, and the other is provided with a first groove 60, and a limit structure of the first direction X and the third direction Y is formed by the protrusion 50 and the first groove 60 in cooperation so as to limit the protection cover 32 from being separated from the base 31 along the first direction X and the third direction Y. The protective cover 32 is further provided with a first rib 70, a second groove 71 is formed between the first rib 70 and the protrusion 50, and a part of the second wall 312 is clamped with the second groove 71. The height of the first wall 311 along the second direction Z is smaller than that of the second wall 312, so that the height position of the buckle 40 can be reduced, the structural strength of the first wall 311 is improved, and the probability of fracture at the connection position of the first wall 311 and the base 31 when the protective cover 32 is acted by external force is reduced; the buckle 40 is disposed on the outer wall of the first wall 311 along the first direction X, and the third wall 321 is located on the outer side of the first wall 311 along the first direction X, so that when the protection cover 32 receives the external force of the collision, the probability of the buckle 40 tripping with the slot 3211 and causing the output electrode protection device 30 to fail can be reduced.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution 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 scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the embodiments, and are intended to be included within the scope of the claims and description. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims (19)

1. An output electrode protection device for protect the output electrode of a battery module, which is characterized in that:

a base having a first wall and a second wall, the first wall and the second wall being oppositely disposed in a first direction;

a protective cover for cooperation with the base, at least a portion of the protective cover being disposed opposite the base in a second direction, the protective cover having a third wall and a fourth wall, the third wall and the fourth wall being disposed opposite in the first direction and the third wall and the fourth wall being spaced apart in the first direction;

The first wall is matched with the third wall to limit the protective cover to be separated from the base in the second direction, the second wall is matched with the fourth wall to limit the protective cover to be separated from the base in the first direction and the third direction, and the first direction, the second direction and the third direction are intersected in pairs.

2. The output pole protection device of claim 1, wherein one of the first wall and the third wall is provided with a catch and the other is provided with a catch that cooperates with the catch to limit the protective cover from disengaging from the base in the second direction.

3. The output pole protection device according to claim 2, wherein the buckle includes a first abutment surface and a guide slope connected to the first abutment surface, and in the second direction, the first abutment surface abuts against an inner side surface of the clamping groove;

the protective cover is mounted on the base in the second direction, and in the first direction, a distance between the guide slope and the first wall is gradually reduced in a direction in which the protective cover is mounted on the base.

4. The output pole protection device of claim 1, wherein the first walls are two and arranged in the third direction, and the third walls are two and arranged in the third direction, each of the first walls mating with a corresponding one of the third walls.

5. The output pole protection device of claim 1, wherein one of the second wall and the fourth wall is provided with a first groove extending in the second direction, and the other is provided with a protrusion that cooperates with the first groove to limit the removal of the protective cover from the base in the first direction and the third direction.

6. The output pole protection device of claim 5, wherein the protrusion is provided with a second abutment surface, the first recess is provided with a third abutment surface, and the second abutment surface and the third abutment surface are abutted in the first direction;

the protrusion is provided with a fourth abutting surface, the first groove is provided with a fifth abutting surface, and the fourth abutting surface and the fifth abutting surface are abutted in the third direction.

7. The output pole protection device of claim 6, wherein the second walls are two and arranged in the third direction and the fourth walls are two and arranged in the third direction, each of the second walls cooperating with a corresponding one of the fourth walls;

Along the third direction, two fourth abutting surfaces are located between two fifth abutting surfaces, or two fifth abutting surfaces are located between two fourth abutting surfaces.

8. The output pole protection device of claim 6, wherein a projected area of the second and third abutment surfaces in the third direction is greater than zero; and/or

And the projection area of the fourth abutting surface and the fifth abutting surface in the first direction is larger than zero.

9. The output pole protection device of claim 6, wherein a projected area of the second and third abutment surfaces in the third direction is equal to zero;

the projection area of the fourth abutting surface and the fifth abutting surface in the first direction is equal to zero.

10. The output pole protection device of claim 9, wherein in the first direction, the first wall and the third wall abut to limit separation of the second abutment surface and the third abutment surface in a direction away from each other.

11. The output pole protection device of claim 5, wherein the first groove extends through the second wall toward a side of the protective cover; or the first groove penetrates through the fourth wall to face the side face of the base.

12. The output pole protection device of any of claims 1-11, wherein a height of the first wall in the second direction is less than a height of the second wall.

13. The output pole protection device of claim 5, wherein the first recess is provided in the second wall and the protrusion is provided in the fourth wall;

the protective cover is further provided with first ribs spaced apart from the protrusions to form second grooves that are in snap fit with a portion of the second wall.

14. The output pole protection device of claim 13, wherein an inner sidewall of the second groove is provided with a guide rib extending in the second direction.

15. The output pole protection device of claim 1, wherein the first wall is two and spaced apart in the third direction to form a first opening and the second wall is two and spaced apart in the third direction to form a second opening.

16. The output pole protection device of claim 15, wherein the protection cover is provided with a first baffle that partially closes the first opening and a second baffle that partially closes the second opening.

17. A battery module comprising the output electrode protection device according to any one of claims 1 to 16.

18. A battery comprising the battery module according to claim 17.

19. A powered device comprising the battery of claim 18, the battery configured to provide electrical energy.