CN215816135U - Buffer mechanism, battery module and device using battery module - Google Patents

Abstract

The utility model relates to the technical field of batteries, and provides a buffer mechanism, a battery module and a device using the battery module, wherein the buffer mechanism comprises: the damping assembly comprises a plurality of dampers, each damper comprises a cylinder part and a shaft part, one end of each shaft part extends into the cylinder part and can axially move relative to the cylinder part, and a damping cavity for containing damping liquid is formed between the inside of the cylinder part and the shaft part; the barrel part and/or the shaft part are/is used for bearing the force applied by the battery cell of the battery module; and the storage part is provided with a storage cavity which is communicated with the damping cavity of the damper. The power that can effectively cushion and release electricity core production or receive improves buffering effect to when electricity core is great to section of thick bamboo portion or the applied force of axial region, the damping fluid in the damping chamber can discharge and save in the storage chamber, and the storage piece can dispel the heat to electricity core simultaneously.

Description

Buffer mechanism, battery module and device using battery module

Technical Field

The utility model relates to the technical field of batteries, in particular to a buffer mechanism, a battery module and a device using the battery module.

Background

A battery module generally includes a housing and a plurality of battery cells disposed in the housing. The battery module can receive the vibration in use or transportation, easily produces the effort and leads to it impaired to electric core and shell to, electric core charge-discharge in-process can lead to it to take place the inflation, and the inflation of a plurality of electric core then easily produces great effort, and this power is difficult to release, easily leads to electric core and shell to take place deformation, and can produce the heat in the electric core working process. Therefore, the force generated or received by the battery cell needs to be buffered.

However, the conventional device for buffering the force generated or received by the battery core of the battery module is not ideal in buffering effect.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a buffer mechanism to solve the technical problem that the buffer effect of the buffer mechanism for buffering the force generated or received by a battery core of a battery module in the prior art is not ideal.

In order to achieve the above object, the present invention provides a buffer mechanism applied to a battery module, the battery module has a plurality of battery cells, and the buffer mechanism includes: the damping assembly comprises a plurality of dampers, each damper comprises a cylinder part and a shaft part, one end of each shaft part extends into the cylinder part and can move axially relative to the cylinder part, and a damping cavity for containing damping liquid is formed between the inside of the cylinder part and the outside of the shaft part; the barrel part and/or the shaft part are/is used for bearing the force applied by the battery cell of the battery module; and the storage part is provided with a storage cavity which is communicated with the damping cavity of the damper.

The technical scheme of the utility model at least has the following technical effects or advantages: the buffer mechanism provided by the utility model is provided with the buffer assembly and the storage part, the buffer assembly comprises a plurality of dampers, each damper comprises a cylinder part and a shaft part, one end of each shaft part extends into the cylinder part and can axially move relative to the cylinder part, a damping cavity for containing damping liquid is formed between the cylinder part and the shaft part, when the buffer mechanism is arranged in the battery module, the cylinder part or the shaft part can bear the force applied by a battery core of the battery module, so that the shaft part can axially move relative to the cylinder part, the damping liquid in the damping cavity can block the movement of the shaft part, the dampers form viscous damping, the buffer effect of the dampers is superior to that of elastic parts such as springs, the buffer mechanism can effectively buffer and release the force generated or received by the battery core, and the buffer effect is improved; simultaneously, the storage piece has the storage chamber, and storage chamber and damping chamber intercommunication, when electric core was great to section of thick bamboo portion or the applied force of axial region, the damping fluid in the damping chamber can discharge and save in the storage chamber, and the storage piece can dispel the heat to electric core simultaneously to can realize cooling it when buffering electric core.

In one embodiment, the damper further includes a spring that is sleeved over the barrel portion.

Through adopting above-mentioned technical scheme, the spring not only can further improve the buffering effect to electric core to still can play the effect that resets to the relative motion between section of thick bamboo portion and the axial region.

In one embodiment, the cushion assembly further includes a first support portion to which the tube portion or the shaft portion of each damper is connected.

Through adopting above-mentioned technical scheme, first supporting part not only can support each attenuator to do benefit to the attenuator and settle, and, do benefit to the attenuator and pass through first supporting part and electric core contact, in order to improve the homogeneity of acting between each attenuator and the electric core.

In one embodiment, the cushion assembly further comprises a second support portion spaced opposite the first support portion; one of the cylinder portion and the shaft portion of the damper is connected to the first support portion, and the other is connected to the second support portion.

Through adopting above-mentioned technical scheme, first supporting part and the relative interval setting of second supporting part, and each attenuator locates between the two, not only do benefit to the synergism between each attenuator, improve its wholeness, and do benefit to the arrangement of buffering subassembly in the battery module, improve the stability of interact between buffering subassembly and the electric core, guarantee the buffering effect.

In one embodiment, the first support part and/or the second support part has a communication chamber, which communicates with the storage chamber of the storage member and the damping chamber of the damper.

Through adopting above-mentioned technical scheme, first supporting part or second supporting part can be as the centre and switch on the part, are linked together storage chamber and damping chamber, can make the intercommunication between storage chamber and the damping chamber more convenient, save space.

In one embodiment, the first support and/or the second support is a storage member.

Through adopting above-mentioned technical scheme for the damping fluid in the damping chamber can directly discharge in first supporting part or the second supporting part, can save battery module's space.

In one embodiment, the storage member is a plate-like storage member.

Through adopting above-mentioned technical scheme, can make the damping fluid of discharging to in the storage chamber distribute more extensively, more for even to do benefit to the radiating effect that improves electric core, and plate-shaped storage piece more does benefit to and settles in battery module.

Another object of the present invention is to provide a battery module including: a housing having a receiving cavity; the battery cores are arranged in the accommodating cavities; in the buffer mechanism of any of the embodiments, the buffer component of the buffer mechanism is arranged between the battery cell and the casing, or between two adjacent battery cells; the cylindrical part or the shaft part of the damper of the buffer assembly of the buffer mechanism is connected with or abutted against the battery cell, and the storage part of the buffer mechanism is connected with or abutted against the battery cell.

The technical scheme of the utility model at least has the following technical effects or advantages: according to the battery module provided by the utility model, due to the adoption of the buffer mechanism of the embodiment, the force generated or received by the battery cell can be effectively buffered and released, and the buffering effect is improved; simultaneously, when the power of electricity core to section of thick bamboo portion or axial region portion was exerted great, the damping fluid in the damping chamber can discharge and save in the storage chamber, and the storage piece can dispel the heat to electricity core simultaneously to can realize cooling down to it when cushioning electric core.

In one embodiment, the storage member is a plate-shaped storage member, and the storage member is disposed between the battery cell and the casing.

Through adopting above-mentioned technical scheme, be platelike because of the storage piece, not only do benefit to and settle in the battery module, and do benefit to and contact with the electric core of more quantity, do benefit to the radiating effect that improves electric core.

In one embodiment, the buffer assembly of the buffer mechanism is arranged between the battery cell and the casing, and comprises a first support part and a second support part which are arranged at intervals relatively, wherein the first support part is arranged close to the battery cell, and the second support part is arranged close to the casing; the battery module further comprises a conductive piece, the conductive piece is arranged inside the second supporting portion and electrically connected with the battery core, and a fuse is arranged on the conductive piece and located inside the second supporting portion.

By adopting the technical scheme, the fuse can perform overload protection, so that the safety of the battery module is improved; and, because of electrically conductive setting up in keeping away from in the second supporting part of electric core, can prevent that the heat that electric core produced from leading to the too early inefficacy of fuse, improve the security.

It is still another object of the present invention to provide an apparatus using a battery module, which includes the battery module of any of the above embodiments, wherein the battery module is used for supplying electric energy.

According to the technical scheme, due to the adoption of the battery module, the force generated or received by the battery core can be effectively buffered and released, the buffering effect is improved, and meanwhile, the storage component can dissipate heat of the battery core, so that the safety of a device using the battery module can be improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a first schematic structural diagram of a buffering mechanism according to an embodiment of the present invention;

fig. 2 is a second schematic structural diagram of a buffering mechanism according to an embodiment of the present invention;

FIG. 3 is an enlarged view of a portion A of FIG. 2;

FIG. 4 is a schematic top view of a buffering mechanism according to an embodiment of the present invention;

FIG. 5 is a schematic sectional view taken along line B-B in FIG. 4;

FIG. 6 is an enlarged view of a portion of the structure of FIG. 5 at C;

fig. 7 is a schematic structural diagram of a battery module according to an embodiment of the utility model;

fig. 8 is a schematic structural view of a battery module according to an embodiment of the present invention after the top of the housing is removed;

fig. 9 is a schematic structural diagram of a conductive device according to an embodiment of the present invention.

Wherein, in the figures, the respective reference numerals:

100. a buffer mechanism; 10. a buffer assembly; 11. a damper; 111. a barrel portion; 112. a shaft portion; 110. a damping chamber; 20. a storage member; 201. a storage chamber; 113. a spring; 12. a first support section; 13. a second support portion; 101. a communicating cavity; 1000. a battery module; 200. a housing; 300. an electric core; 400. a conductive member; 401. and a fuse.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

In the description of the present invention, it is to be understood that the terms "length," "width," "upper," "lower," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and simplicity in description, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus are not to be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise; "plurality" means at least one, i.e., one or more than one.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood according to specific situations by those skilled in the art

Referring to fig. 1 to 6, an embodiment of the utility model provides a buffer mechanism 100 applied to a battery module, where the battery module includes a housing and a plurality of battery cells, each of the battery cells is disposed in the housing, and fig. 7 and 8 exemplarily show a battery module 1000, a housing 200, and a battery cell 300; the buffer mechanism 100 is used for buffering or releasing the force generated by or received by the battery cell, and the buffer mechanism 100 includes a buffer assembly 10 and a storage member 20, wherein:

the cushion assembly 10 includes a plurality of dampers 11, the dampers 11 including a cylinder portion 111 and a shaft portion 112; the cylindrical part 111 is a hollow cylindrical body or a sleeve-shaped body, the cylindrical part 111 is hollow, one end of the cylindrical part 111 is closed, and the other end of the cylindrical part is used for the shaft part 112 to extend into the cylindrical part; the shaft portion 112 may be a shaft-like member or a rod-like member, but is not limited thereto, and one end of the shaft portion 112 extends into the cylindrical portion 111 and is capable of moving axially relative to the cylindrical portion 111, that is, the cylindrical portion 111 may be stationary and the shaft portion 112 may move in the axial direction thereof, or the shaft portion 112 may be stationary and the cylindrical portion 111 may move in the axial direction thereof; a damping chamber 110 for containing a damping fluid is formed between the inside of the cylinder 111 and the outside of the shaft 112, wherein the damping fluid may be any one of the existing fluids capable of providing viscous resistance to damp kinetic energy of the moving machine, such as, but not limited to, flame retardant hydraulic oil; only the cylindrical portion 111 may be in contact with or connected to the battery cell 300 of the battery module 1000 to receive the force applied by the battery cell 300, only the shaft portion 112 may be in contact with or connected to the battery cell 300 of the battery module 1000 to receive the force applied by the battery cell 300, or the cylindrical portion 111 and the shaft portion 112 may be respectively connected to the battery cell 300, for example, between two battery cells 300, to simultaneously receive the force applied by the battery cell 300.

The reservoir member 20 has a reservoir chamber 201, and the reservoir chamber 201 communicates with the damping chamber 110 of the damper 11 to be able to contain the damping fluid discharged from the damping chamber 110; the storage member 20 may be a member having any shape and a cavity formed therein, and may be, for example, a plate, a rod, a column, or the like, but is not limited thereto; the storage chamber 201 and the damping chamber 110 of the damper 11 may be connected by an intermediate component, or may be directly connected without an intermediate component; the storage component 20 may be disposed in the casing 200 of the battery module 1000, and may be located between the bottom of the battery cell 300 and the bottom of the casing 200, or between the top of the battery cell 300 and the top of the casing 200, or between the side of the battery cell 300 and the casing 200, so that the battery cell 300 may be cooled by the damping fluid in the storage cavity 201. The storage part 20 may always store damping fluid to facilitate the replenishment of the damping fluid in the damping chamber 110, and of course, the storage part 20 may not be provided with damping fluid before the fluid in the damping chamber 110 is not discharged.

In the cushioning mechanism 100 according to the embodiment of the present invention, by providing the cushioning assembly 10 and the storage device 20, the cushioning assembly 10 includes a plurality of dampers 11, each damper 11 includes a cylindrical portion 111 and a shaft portion 112, one end of the shaft portion 112 extends into the cylindrical portion 111 and can move axially relative to the cylindrical portion 111, and a damping cavity 110 for accommodating a damping fluid is formed between the cylindrical portion 111 and the shaft portion 112, when the cushioning mechanism 100 is disposed in a battery module, the cylindrical portion 111 or the shaft portion 112 can contact or connect with a cell of the battery module to receive a force applied by the cell, for example, a force generated by expansion of the cell or a force applied by the cell when the battery module is subjected to vibration, so that the shaft portion 112 can move axially relative to the cylindrical portion 111, the damping fluid in the damping cavity 110 is squeezed, the damping fluid can block movement of the shaft portion 112, and the damper 11 forms viscous damping (in physics and engineering, a mechanical model of damping is generally proportional to a vibration speed, a force opposite to the vibration speed direction, which is called as a viscous or viscous damping model), the damping effect of which is superior to that of elastic members such as springs and the like, so that the damper 11 can effectively buffer and release the force generated or received by the battery cell and improve the damping effect; simultaneously, storage member 20 has storage chamber 201, and storage chamber 201 communicates with damping chamber 110, and when electric core was great to section of thick bamboo portion 111 or the power of shank 112 application, damping fluid in the damping chamber 110 can be extrudeed and discharged to storage chamber 201 and save, and storage member 20 that is arranged in the battery module can dispel the heat to electric core simultaneously to can realize cooling it when buffering electric core, in order to do benefit to the security that improves the battery module. In addition, when one or more battery cells are cancelled in the battery module, related components such as a shell of the battery module need to be additionally arranged, so that the flexibility and the adaptability are low, in this case, the buffer mechanism 100 provided by the embodiment of the utility model can be adopted, the buffer assembly 10 is filled into a vacancy formed by the cancelled battery cells, the buffer assembly 10 serves as an auxiliary support to provide lateral extrusion force for the rest of the battery cells, the battery modules can be compatible with different numbers of battery cells while the positive and negative output points of the battery module are not changed, and the universality of the battery module can be improved.

In one embodiment, referring to fig. 3 and fig. 6, the damper 11 further includes a spring 113, and the spring 113 is sleeved on the cylinder 111, wherein the spring 113 may be supported between the two battery cells 300 or between the battery cells and the housing 200. So set up, spring 113 not only can further improve the buffering effect to electric core, and still can play the effect that resets to the relative motion between section of thick bamboo portion 111 and axial region 112, and simultaneously, when the battery module need cancel one or more electric core, spring 113 can play and support other electric cores and provide the effect of lateral extrusion force, specifically, can be according to the electric core quantity that reduces, regulating spring 113's number of turns, and then through the cooperation of spring 113 length with cancellation electric core quantity, guarantee that other each electric core atress is close.

In one embodiment, referring to fig. 2 and 6, the cushion assembly 10 further includes a first support portion 12, the tube portion 111 or the shaft portion 112 of each damper 11 is connected to the first support portion 12, the tube portions 111 of all dampers 11 are connected to the first support portion 12, the shaft portions 112 of all dampers 11 are connected to the first support portion 12, or the tube portions 111 of some dampers 11 are connected to the first support portion 12, and the shaft portions 112 of some dampers 11 are connected to the first support portion 12, so as to provide support for the dampers 11; the first supporting portion 12 may be a plate-shaped body, a sheet-shaped body, a frame body, etc., but is not limited thereto, and may be adaptively adjusted or set according to the number of the dampers 11 and the requirements of the actual application scenario. So set up, first supporting part 12 not only can support each attenuator 11 to do benefit to the arrangement of attenuator 11, and, do benefit to attenuator 11 and contact through first supporting part 12 and electric core 300, with the homogeneity that acts on between improvement each attenuator 11 and electric core 300, and then improve buffering effect.

In other embodiments, the first support part 12 may not be provided, and the dampers 11 may be connected to each other, or the dampers 11 may be distributed and connected to an inner wall of a case of the battery module or an insulating plate connected to the battery module.

Optionally, in an embodiment, referring to fig. 2 and 6, the buffering assembly 10 further includes a second supporting portion 13, and the second supporting portion 13 may be a plate-shaped body, a sheet-shaped body, a frame body, etc., but is not limited thereto; the second supporting part 13 is arranged opposite to the first supporting part 12 at intervals, and each damper 11 is arranged between the first supporting part 12 and the second supporting part 13; one of the tube portions 111 and the shaft portions 112 of the dampers 11 is connected to the first support portion 12 and the other is connected to the second support portion 13, the tube portions 111 of all the dampers 11 may be connected to the first support portion 12 and the shaft portions 112 may be connected to the second support portion 13, the shaft portions 112 of all the dampers 11 may be connected to the first support portion 12 and the tube portions 111 may be connected to the second support portion 13, or may be unified, and the tube portions 111 of some of the dampers 11 are connected to the first support portion 12 and the tube portions 111 of some of the dampers 11 are connected to the second support portion 13. With such an arrangement, the first supporting portion 12 and the second supporting portion 13 are to clamp the damper 11 therebetween, when the buffer assembly 10 is disposed in the battery module, one of the first supporting portion 12 and the second supporting portion 13 can be abutted against or connected to the battery cell, and the other one can be abutted against or connected to the housing or the insulating plate of the battery module, or the first supporting portion 12 and the second supporting portion 13 can be abutted against or connected between the two battery cells, which is not only beneficial to the disposition of each damper 11, but also beneficial to the simultaneous buffering of each damper 11 by the first supporting portion 12 and the second supporting portion 13 bearing the force of the battery cell, beneficial to the synergistic effect between each damper 11, and improving the integrity and the cooperativity thereof, i.e. each damper 11 can simultaneously buffer the battery cell, and is beneficial to the disposition of the buffer assembly 10 in the battery module, and improving the stability of the interaction between the buffer assembly and the battery cell, and the buffering effect is ensured. It should be noted that, in some other embodiments, the second supporting portion 13 may not be provided.

Optionally, in an embodiment, referring to fig. 6, at least one of the first supporting portion 12 and the second supporting portion 13 has a conducting cavity 101, the conducting cavity 101 is opened inside the conducting cavity 101, and the conducting cavity 101 is communicated with the storage cavity 201 of the storage component 20 and the damping cavity 110 of the damper 11, for example, when the conducting cavity 101 is opened on the second supporting portion 13, a hole communicated with the conducting cavity 101 may be opened on the shaft portion 112 or the cylinder portion connected to the second supporting portion 13, so that the damping fluid in the damping cavity 110 may enter the conducting cavity 101 through the hole, and further enter the storage cavity 201. So set up, conduct the part through first supporting part 12 and/or second supporting part 13 as the centre, be linked together storage chamber 201 of storage part 20 and damping chamber 110 of attenuator 11, can need not to set up intercommunication such as external pipeline, when storage part 20 need be the platelike piece and set up in the bottom of each electricity core 300 and cool down to electric core, can make the intercommunication between storage chamber 201 and the damping chamber 110 more convenient, save space. It is understood that a sealing member may be disposed between the inner surface of the cylindrical portion 111 and the outer surface of the shaft portion 112 to prevent the damping fluid in the damping chamber 110 from flowing out, for example, the sealing member may be a sealing ring; of course, in other embodiments, no seal may be provided, such as where the outer surface of the shaft portion 112 directly contacts and is in sliding engagement with the inner surface of the barrel portion 111.

It should be noted that the communication between the storage chamber 201 and the damper chamber 110 has various embodiments, and is not limited to the above. Optionally, in one embodiment, at least one of the first supporting portion 12 and the second supporting portion 13 is the storage member 20, that is, the first supporting portion 12 and the second supporting portion 13 can serve as the storage member 20 to store the liquid discharged from the damping chamber 110, so that the structure can be simplified, and the space of the battery module can be saved; of course, in other embodiments, the storage chamber 201 and the damping chamber 110 may be communicated through an intermediate member such as a pipe, but is not limited thereto.

In one embodiment, referring to fig. 1 and 2, the storage member 20 is a plate-shaped storage member, which may be a flat plate or a plate-shaped member having a substantially plate shape and having a partially different shape. So set up, do benefit to its storage chamber 201 that forms more flat to can make the damping fluid of discharging to in the storage chamber 201 distribute more extensively, more for even, the platelike storage piece can be located more electric core bottoms, in order to do benefit to the radiating effect of improvement to electric core, and the platelike storage piece more does benefit to and settles in the battery module.

Referring to fig. 7 and fig. 8, an embodiment of the present invention further provides a battery module 1000, where the battery module 1000 includes a housing 200, a plurality of battery cells 300, and the buffer mechanism 100 according to any of the above embodiments, where the housing 200 has a containing cavity, and the battery cells 300 are disposed in the containing cavity; the buffer assembly 10 of the buffer mechanism 100 is arranged between the battery cells 300 and the casing 200, or between two adjacent battery cells 300; the cylindrical portion 111 or the shaft portion 112 of the damper 11 of the cushion assembly 10 of the cushion mechanism 100 is connected to or abutted against the battery cell 300, and the storage member 20 of the cushion mechanism 100 is connected to or abutted against the battery cell 300.

Because the battery module 1000 provided by the embodiment of the present invention employs the buffer mechanism 100 of the above embodiment, the battery module 1000 also has the technical effects brought by the technical scheme of the above buffer mechanism 100, can effectively buffer and release the force generated or received by the battery core, and improve the buffer effect, and when the damper 11 of the buffer assembly 10 receives a large force, the damping fluid in the damping cavity 110 can be discharged into the storage cavity 201 of the storage component 20 for storage, and the storage component 20 can simultaneously dissipate heat from the battery core 300, so that the battery core 300 can be cooled while being buffered, and the safety of the battery module 1000 can be improved; in addition, when one or more battery cells 300 are cancelled in the battery module 1000, a vacancy occurs in the casing 200, the buffer assembly 10 of the buffer mechanism 100 can be filled between other battery cells and the casing 200 to fill the vacancy, the buffer assembly 10 serves as an auxiliary support to provide lateral extrusion force for the other battery cells 300, the battery module 1000 can be compatible with different numbers of battery cells 300 without changing the positive and negative output points of the battery module 1000, and the universality of the battery module 1000 can be improved.

In one embodiment, referring to fig. 1 and fig. 8, the storage element 20 of the buffer mechanism 100 is a plate-shaped storage element, the storage element 20 is disposed between the battery cells 300 and the casing 200, and specifically, the storage element 20 is disposed at the bottom of each battery cell 300, so that the storage element 20 can cool each battery cell 300, and the heat dissipation effect of the battery cells 300 is improved.

In one embodiment, referring to fig. 1 and 8, the buffer assembly 10 of the buffer mechanism 100 is disposed between the battery cell 300 and the housing 200, specifically, the buffer assembly 10 is disposed between the battery cell 300 and an end plate of the housing 200, the buffer assembly 10 of the buffer mechanism 100 includes a first supporting portion 12 and a second supporting portion 13 disposed at an interval, the first supporting portion 12 is disposed close to the battery cell 300 and may be abutted or connected to the battery cell 300, and the second supporting portion 13 is disposed close to the housing 200 and may be abutted or connected to the end plate or the insulating plate of the housing 200; the battery module 1000 further includes a conductive member 400, where the conductive member 400 is a conductive component made of a metal material, such as a copper bar, but not limited thereto; the conductive member 400 is disposed inside the second supporting portion 13, a cavity penetrating through the outside may be formed inside the second supporting portion 13, the conductive member 400 is disposed in the cavity, or may be pre-embedded in the second supporting portion 13 when the second supporting portion 13 is formed, two ends of the conductive member 400 extend to the outside of the second supporting portion 13, the conductive member 400 is electrically connected to the battery cells 300, so that when one or more battery cells 300 are removed from the battery module 1000, the conductive member 400 may be electrically connected to a tab or a busbar of the last battery cell 300 close to the buffer assembly 10 and an output copper bar of the battery module, so as to facilitate not changing an output point of the positive electrode and the negative electrode of the battery module 1000; the fuse 401 is disposed on the conductive device 400, and the fuse 401 is located inside the second supporting portion 13, wherein the fuse 401 may be a weak point integrally formed directly on the conductive device 400, that is, the cross-sectional area of the fuse 401 is much smaller than that of the other positions of the conductive device 400, and of course, the fuse 401 may also be a fuse separately disposed on the conductive device 400. With such an arrangement, the FUSE 401 can perform overload protection, and is disconnected when the current is too large to protect the battery module 1000, so that the FUSE 401 can perform a FUSE function, and the safety of the battery module 1000 can be improved; moreover, since the conductive member 400 is disposed in the second supporting portion 13 far away from the battery cell 300, the fuse 401 can be prevented from being prematurely failed due to heat generated by the battery cell 300, and safety is improved.

Optionally, in an embodiment, a heat conducting gel is disposed at the bottom of the battery cell 300, and in particular, the heat conducting gel may be disposed between the battery cell 300 and the storage component 20, and the presence of the heat conducting gel may better slow down the play and vibration of the battery cell 300 under the action of the buffer assembly 10.

The embodiment of the present invention further provides a device using a battery module, which includes the battery module 1000 of any of the above embodiments, wherein the battery module 1000 is used for providing electric energy. The device using the battery module may be a battery pack composed of the battery module 1000; the device using the battery module can also be a vehicle, such as a new energy automobile, and the new energy automobile can be a pure electric automobile, a hybrid electric automobile or a range-extended automobile; the battery modules 1000 may be arranged in a vehicle as a battery pack, or a plurality of battery modules 1000 may be directly arranged in an accommodating cavity of the vehicle; the device using the battery module can also be a ship or an unmanned aerial vehicle and the like.

Because the device using the battery module provided by the embodiment of the utility model adopts the battery module 1000 of the embodiment, the device also has the technical effects brought by the technical scheme of the battery module 1000, can effectively buffer and release the force generated or received by the battery cell, improves the buffering effect, and can dissipate heat of the battery cell, thereby improving the safety of the device using the battery module.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides a buffer gear, is applied to on the battery module, the battery module has a plurality of electricity core, its characterized in that, buffer gear includes:

the damping assembly comprises a plurality of dampers, each damper comprises a cylinder part and a shaft part, one end of each shaft part extends into the cylinder part and can move axially relative to the cylinder part, and a damping cavity for containing damping liquid is formed between the inside of the cylinder part and the outside of the shaft part; the barrel part and/or the shaft part are/is used for bearing the force applied by the battery cell of the battery module; and

a storage member having a storage cavity in communication with the damping cavity of the damper.

2. The cushioning mechanism of claim 1, wherein: the damper further comprises a spring, and the spring is sleeved on the cylinder portion.

3. The cushioning mechanism of claim 1, wherein: the cushion assembly further includes a first support portion, and the cylindrical portion or the shaft portion of each damper is connected to the first support portion.

4. The cushioning mechanism of claim 3, wherein: the buffer assembly further comprises a second supporting part, and the second supporting part and the first supporting part are arranged oppositely at intervals; one of the cylinder portion and the shaft portion of the damper is connected to the first support portion, and the other is connected to the second support portion.

5. The cushioning mechanism of claim 4, wherein: the first supporting part and/or the second supporting part are/is provided with a communicating cavity which is communicated with the storage cavity of the storage part and the damping cavity of the damper;

or, the first supporting part and/or the second supporting part is the storage part.

6. The damper mechanism according to any one of claims 1 to 5, wherein: the storage member is a plate-like storage member.

7. The utility model provides a battery module which characterized in that, battery module includes:

a housing having a receiving cavity;

the battery cells are arranged in the accommodating cavities; and

the buffer mechanism of any one of claims 1 to 6, wherein a buffer component of the buffer mechanism is arranged between the battery cells and the casing, or between two adjacent battery cells; the cylindrical part or the shaft part of the damper of the buffer assembly of the buffer mechanism is connected with or abutted against the battery cell, and the storage part of the buffer mechanism is connected with or abutted against the battery cell.

8. The battery module according to claim 7, wherein: the storage part of the buffer mechanism is a plate-shaped storage part, and the storage part is arranged between the battery cell and the shell.

9. The battery module according to claim 7, wherein: the buffer assembly of the buffer mechanism is arranged between the battery cell and the shell and comprises a first support part and a second support part which are arranged at intervals relatively, the first support part is arranged close to the battery cell, and the second support part is arranged close to the shell; the battery module further comprises a conductive piece, the conductive piece is arranged inside the second supporting part and electrically connected with the battery core, and a fuse is arranged on the conductive piece and located inside the second supporting part.

10. A device for using a battery module is characterized in that: comprising a battery module according to any one of claims 7 to 9, wherein the battery module is used for providing electrical energy.

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