阅读说明：本技术 一种外壳组件、储电装置及电动车 (Shell subassembly, power storage device and electric motor car ) 是由 宋贤 吴明 黄大鹏 于 2020-05-28 设计创作，主要内容包括：本发明涉及电动车的技术领域,提供了一种外壳组件、储电装置及电动车,其中外壳组件包括：壳体,为一体成型件,具有一开口；以及盖体,盖于开口上,盖体和壳体围合形成用于容置电池结构的容置腔体；其中,壳体和盖体均为镁合金件；本发明提供的外壳组件、储电装置及电动车具有以下优点：壳体和盖体均为镁合金件,相同体积下的镁合金件的重量比铝合金件的重量轻,可以进一步减轻应用该外壳组件的储电装置的重量；另外,通过盖体和壳体两个部件即可围合形成用于容置电池结构的容置腔体,其需要组装的部件比现有技术少,其组装难度低,并且壳体为一体成型件,受到电池结构发热的影响较小,其机械强度高。(The invention relates to the technical field of electric vehicles, and provides a shell assembly, an electricity storage device and an electric vehicle, wherein the shell assembly comprises: the shell is an integrally formed piece and is provided with an opening; the cover body covers the opening, and the cover body and the shell body are enclosed to form an accommodating cavity for accommodating the battery structure; wherein, the shell and the cover body are made of magnesium alloy; the shell component, the electricity storage device and the electric vehicle provided by the invention have the following advantages: the shell and the cover body are made of magnesium alloy parts, the weight of the magnesium alloy part with the same volume is lighter than that of the aluminum alloy part, and the weight of the electricity storage device applying the shell component can be further reduced; in addition, can enclose through two parts of lid and casing and close the holding cavity that forms and be used for holding battery structure, its part that needs the equipment is less than prior art, and its equipment degree of difficulty is low to the casing is integrated into one piece spare, receives the influence that battery structure generates heat less, and its mechanical strength is high.)

1. An enclosure assembly, comprising:

the shell is an integrally formed piece and is provided with an opening; and

the cover body covers the opening, and the cover body and the shell body enclose to form an accommodating cavity for accommodating a battery structure;

wherein, the shell and the cover body are both made of magnesium alloy parts.

2. The enclosure assembly of claim 1, wherein the housing has a first mating portion and the cover has a second mating portion for detachable connection with the first mating portion.

3. The enclosure assembly of claim 2, wherein the first mating portion is a mounting slot and the second mating portion is a loop landing for insertion into the mounting slot.

4. The enclosure assembly of claim 2, wherein the second mating portion is a mounting slot and the first mating portion is a loop landing for insertion into the mounting slot.

5. The enclosure assembly of claim 2, wherein a waterproof ring is disposed between the first mating portion and the second mating portion.

6. The enclosure assembly of any of claims 1 to 5, wherein the inner wall of the enclosure is provided with heat dissipation grooves for receiving the thermally conductive adhesive, and the outer wall of the enclosure is provided with heat dissipation fins corresponding to the positions of the heat dissipation grooves.

7. The housing assembly of any of claims 1 to 5, wherein the cover has at least two pressure relief holes, one of the pressure relief holes having a pressure relief valve therein and the other of the pressure relief holes having a light emitting assembly therein for use as an indicator light.

8. The housing assembly of any one of claims 1 to 5, wherein a handle is provided on the cover, a handle cavity for accommodating a hand of a human body is provided between the handle and the cover, and an anti-slip structure is formed on a side of the handle adjacent to the cover.

9. An electricity storage device comprising a housing assembly according to any one of claims 1 to 8, and a battery structure provided inside the housing assembly.

10. An electric vehicle characterized by comprising the electric storage device according to claim 9.

Technical Field

The invention relates to the technical field of electric vehicles, in particular to a shell assembly, an electric storage device and an electric vehicle.

Background

An electric bicycle is a mechatronic personal vehicle which is provided with a motor, a controller, a storage battery, a rotating handle brake handle and other operating components and a display instrument system on the basis of a common bicycle; although electric bicycles are increasingly popular as vehicles convenient to operate, in order to reduce the running risk of the electric bicycles and ensure the safety of pedestrians, the state needs to establish standards for the structure and the weight of the electric bicycles, so that the structural strength of the electric bicycles needs to be improved, and the weight of the electric bicycles needs to be reduced; therefore, manufacturers need to optimize the structure of the electric bicycle when producing the electric bicycle, for example, the electric storage device of the electric bicycle is lightened, on one hand, the manufacturers start to improve the shell of the electric storage device, and the shell is lightened by using the aluminum alloy material, but the problem of heavy weight still exists; on the other hand, in order to further reduce the weight of the shell, the shell is divided into a top structure, a middle structure and a bottom structure to be manufactured in a split mode, only the top structure or the middle structure is made of aluminum alloy, the bottom structure is made of plastic materials, and then the shell is formed through assembly.

Disclosure of Invention

The invention aims to provide a shell component, an electricity storage device and an electric vehicle, and aims to solve the technical problems that the shell component of the electricity storage device in the prior art is heavy in weight and low in mechanical strength.

In order to achieve the above object, the present invention adopts a technical solution in which a housing assembly includes:

the shell is an integrally formed piece and is provided with an opening; and

the cover body covers the opening, and the cover body and the shell body enclose to form an accommodating cavity for accommodating a battery structure;

wherein, the shell and the cover body are both made of magnesium alloy parts.

In one embodiment, a first matching portion is arranged on the shell, and a second matching portion detachably connected with the first matching portion is arranged on the cover body.

In one embodiment, the first fitting portion is a mounting groove, and the second fitting portion is a loop platform for insertion in the mounting groove.

In one embodiment, the second fitting portion is a mounting groove, and the first fitting portion is a loop platform for insertion in the mounting groove.

In one embodiment, a waterproof ring is arranged between the first matching part and the second matching part.

In one embodiment, the inner wall of the shell is provided with a heat dissipation groove for accommodating heat-conducting glue, and the outer wall of the shell is provided with a heat dissipation fin corresponding to the position of the heat dissipation groove.

In one embodiment, the cover body is provided with at least two pressure relief holes, one of the pressure relief holes is provided with a pressure relief valve, and the other pressure relief hole is internally provided with a light-emitting assembly used as an indicator light.

In one embodiment, a handle is arranged on the cover body, a handle cavity for accommodating a hand of a human body is arranged between the handle and the cover body, and an anti-skid structure is formed on one side surface of the handle close to the cover body.

Another object of the present invention is to provide an electricity storage device, which includes the housing assembly, and a battery structure disposed inside the housing assembly.

It is still another object of the present invention to provide an electric vehicle including the above-described electric storage device.

The shell component, the electricity storage device and the electric vehicle have the advantages that:

the shell and the cover body are made of magnesium alloy parts, the weight of the magnesium alloy part with the same volume is lighter than that of the aluminum alloy part, and the weight of the electricity storage device applying the shell component can be further reduced; in addition, can enclose through two parts of lid and casing and close the holding cavity that forms and be used for holding battery structure, its part that needs the equipment is less than prior art, and its equipment degree of difficulty is low to the casing is integrated into one piece spare, receives the influence that battery structure generates heat less, and its mechanical strength is high.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments 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 that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a perspective block diagram of an enclosure assembly provided by an embodiment of the present invention;

FIG. 2 is an exploded view of an enclosure assembly provided by an embodiment of the present invention;

FIG. 3 is an enlarged view at "A" in FIG. 2;

FIG. 4 is a perspective view of a battery structure and housing provided by an embodiment of the present invention;

fig. 5 is a perspective view of a cover according to an embodiment of the present invention;

fig. 6 is a perspective view of a battery structure provided in an embodiment of the present invention;

fig. 7 is an exploded view of a perspective of a circuit board provided by an embodiment of the present invention;

FIG. 8 is an exploded view of another perspective of a circuit board provided by an embodiment of the present invention;

FIG. 9 is a top view of a connection provided by an embodiment of the present invention;

fig. 10 is an exploded view of a battery structure provided by an embodiment of the present invention.

The figures are numbered:

1-a housing assembly; 11-a housing; 111-a first mating portion; 112-a heat sink; 113-convex ribs; 114-inner wall surface; 12-a cover body; 121-a second mating portion; 122-a pressure relief valve; 123-a light emitting component; 124-a handle; 125-anti-slip structure; 126-pressure relief vent; 13-waterproof ring; 131-a first waterproof station; 132-a second waterproof station;

2-a battery structure; 201-end face; 202-a sealing strip; 21-a guide structure; 22-a first battery module; 221-a first cell; 222-a first frame; 223-a second frame; 23-a second battery module; 231-a second cell; 232-a third frame; 233-a fourth frame; 234-second perforation; 235-a second bus bar; 24-a heating plate; 25-damping silica gel ring;

3-a circuit board; 31-a connector; 311-a first electrical connection; 312-a docking post; 313-a plug hole; 314-a first peg; 315-a second peg; 316-a first mating hole; 317-a second plug hole; 318-fool-proof projection; 319-fool-proof groove; 32-connecting hole; 33-a containment hole; 331-a second electrical connection; 332-first aperture wall; 333-a second pore wall; 34-connecting the needle seat; 35-a guide hole; 36-elastic thimble.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected or indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, refer to an orientation or positional relationship illustrated in the drawings for convenience in describing the invention, and do not indicate that the device or component must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.

Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating relative importance or as indicating a number of technical features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. The following describes a specific implementation of the present invention in more detail with reference to specific embodiments:

as shown in fig. 1 and 2, an embodiment of the present invention provides a housing assembly 1 for accommodating a battery structure 2, and performing protection and heat dissipation.

The housing assembly 1 comprises: a shell 11 with an opening and a cover 12 covering the opening, wherein the cover 12 and the shell 11 enclose to form an accommodating cavity for accommodating the battery structure 2; the housing 11 is an integrally formed part, and the housing 11 and the cover 12 are both made of magnesium alloy.

The housing assembly 1 provided by the present embodiment has the beneficial effects that:

the shell 11 and the cover body 12 are made of magnesium alloy parts, the weight of the magnesium alloy parts under the same volume is lighter than that of the aluminum alloy parts, and the weight of the power storage device applying the shell component 1 can be further lightened; in addition, can enclose through lid 12 and two parts of casing 11 and close the holding cavity that forms and be used for holding battery structure 2, its part that needs the equipment is less than prior art, and its equipment degree of difficulty is low to casing 11 is integrated into one piece spare, receives the influence that battery structure 2 generates heat less, and its mechanical strength is high.

In this embodiment, for easy assembly between the cover 12 and the housing 11, the housing 11 is provided with a first engaging portion 111, and the cover 12 is provided with a second engaging portion 121 detachably connected to the first engaging portion 111, so that the detachable connection between the first engaging portion 111 and the second engaging portion 121 facilitates the assembly between the cover 12 and the housing 11, reduces the difficulty of the assembly, and improves the assembly efficiency.

In the above embodiment, optionally, the first fitting portion 111 is a mounting groove, and the second fitting portion 121 is a loop platform for being inserted into the mounting groove; or the second fitting part 121 is a mounting groove, and the first fitting part 111 is a loop platform for being inserted into the mounting groove. It will be appreciated that the mounting slot and the collar are in interference fit, and the cover 12 and the housing 11 are secured to each other by a compressive force between the mounting slot and the collar.

In one embodiment, a waterproof ring 13 is disposed between the first and second fitting portions 111 and 121. It can be understood that, by arranging the waterproof ring 13 to close the gap between the first matching portion 111 and the second matching portion 121, liquid is prevented from entering the accommodating cavity from the gap, and the waterproof performance of the accommodating cavity is improved.

Referring to fig. 3, specifically, a side surface of the first matching portion 111 faces a side surface of the second matching portion 121, and a waterproof ring 13 is disposed between the first matching portion and the second matching portion, the waterproof ring 13 is disposed along a circumferential direction of the first matching portion 111 and is in interference fit with a gap between the first matching portion 111 and the second matching portion 121, it should be explained that the waterproof ring 13 is an elastic member and can deform under the extrusion of the first matching portion 111 and the second matching portion 121, so as to achieve the purpose of sealing the gap between the first matching portion 111 and the second matching portion 121.

Further, a first waterproof platform 131 is arranged on the side surface of the waterproof ring 13 connected with the first matching portion 111, the first waterproof platform 131 is arranged along the circumferential direction of the waterproof ring 13, and the first waterproof platform 131 abuts against the side surface of the second matching portion 121 connected with the first matching portion 111. In this embodiment, the first waterproof platform 131 and the waterproof ring 13 are made of the same material and are elastic members, the first waterproof platform 131 can be deformed by the pressing of the first matching portion 111 to tightly abut against the side surface of the first matching portion 111, and the first waterproof platform 131 extends along the circumferential direction of the waterproof ring 13, so that the sealing effect in the circumferential direction of the waterproof ring 13 is further enhanced.

Further, a second waterproof platform 132 is disposed on a side surface of the waterproof ring 13 connected to the second matching portion 121, the second waterproof platform 132 is disposed along a circumferential direction of the waterproof ring 13, and the second waterproof platform 132 abuts against a side surface of the first matching portion 111 connected to the second matching portion 121. In this embodiment, the second waterproof platform 132 and the waterproof ring 13 are made of the same material and are elastic members, the second waterproof platform 132 can be deformed by the pressing of the second matching portion 121 to tightly abut against the side surface of the second matching portion 121, and the second waterproof platform 132 extends along the circumferential direction of the waterproof ring 13, so that the sealing effect in the circumferential direction of the waterproof ring 13 is further enhanced.

It should be further explained that the first waterproof platform 131 and the second waterproof platform 132 are respectively disposed on two opposite side surfaces of the waterproof ring 13, and the first waterproof platform 131 and the second waterproof platform 132 are forced to be pressed towards the waterproof ring 13 by the lateral pressing force generated when the first matching portion 111 and the second matching portion 121 are butted, so as to further improve the waterproof performance.

Referring to fig. 4, in an embodiment, two heat dissipation grooves for accommodating the heat conductive adhesive are disposed on an inner wall of the housing 11, and the heat dissipation plate 112 is disposed on an outer wall of the housing 11 and corresponds to the heat dissipation grooves.

Specifically, the housing 11 has an opening, a rib 113 is provided on one of the inner wall surfaces 114 of the housing 11, the rib 113 extends to the opening along the circumferential direction of the inner wall surface 114, and the rib 113 is "U" -shaped; the battery structure 2 has an end face 201, the end face 201 is opposite to the inner wall face 114, the end face 201 is used for abutting against the convex rib 113, and a heat dissipation groove body is formed by enclosing the end face 201, the inner wall face 114 and the convex rib 113; the heat-conducting glue is filled in the heat-radiating groove. Enclose between terminal surface 201, the internal face 114 of casing 11 through battery structure 2 and the protruding muscle 113 and close the heat dissipation cell body that forms and be used for holding heat conduction glue for can fill heat conduction glue between battery structure 2 and the casing 11, adopt the mode of filling heat conduction glue can avoid on the unable effective transmission of internal face 114 to casing 11 of heat because battery structure 2's unevenness terminal surface 201, consequently above-mentioned design can improve power storage device's heat dispersion.

Further, a sealing strip 202 is arranged between the end surface 201 of the cell structure 2 and the rib 113, and the length of the sealing strip 202 is matched with the length of the rib 113. In this embodiment, the sealing strip 202 has elasticity, and is used for sealing the gap between the end surface 201 of the battery structure 2 and the rib 113, so as to prevent the heat-conducting glue from overflowing from the gap, and reduce the filling effect of the heat dissipation groove.

Furthermore, a plurality of heat dissipation fins 112 facing the heat dissipation grooves are disposed on the outer wall of the housing 11, and the plurality of heat dissipation fins 112 are sequentially arranged on the outer wall of the housing 11. It can be understood that, by arranging the heat dissipation plate 112 facing the heat dissipation groove, the heat of the heat conductive adhesive in the heat dissipation groove can be directly conducted to the heat dissipation plate 112 for heat dissipation, thereby improving the heat dissipation effect.

Further, the heat sink 112 extends on the outer wall of the housing 11, and the extending direction thereof is perpendicular or parallel to the central axis of the housing 11. In the present embodiment, the heat dissipation fins 112 are extended so that heat can be transferred to a remote place by the extended heat dissipation fins 112, and a plurality of heat dissipation fins 112 are arranged on the outer wall of the housing 11 at intervals, so as to increase the heat dissipation area and improve the heat dissipation efficiency. It should be further noted that the extending direction of the heat dissipation fins 112 is perpendicular or parallel to the central axis of the housing 11, so that the heat dissipation fins 112 are regularly arranged, which is beneficial for manufacturing. In another embodiment, the heat sink 112 extends on the outer wall of the housing 11, and the extending direction thereof obliquely intersects the central axis of the housing 11.

Referring to fig. 5, in one embodiment, at least two pressure relief holes 126 are formed in the cover 12, wherein one pressure relief hole 126 is provided with a pressure relief valve 122, and the other pressure relief hole 126 is provided with a light emitting element 123 serving as an indicator.

Specifically, the light emitting element 123 is detachably disposed in one of the pressure relief holes 126, and the light emitting element 123 falls off from the first pressure relief hole 126 when the pressure of the accommodating cavity exceeds a threshold value. The pressure relief valve 122 is disposed in another pressure relief hole 126, and the pressure relief hole 126 also has a pressure relief function, specifically, when the air pressure in the accommodating cavity exceeds a first preset threshold, the pressure relief valve 122 releases air; when the air pressure exceeds a second preset threshold, the air pushes the pressure release valve 122 open to release the pressure; when the gas in the receiving chamber exceeds a third predetermined threshold, the gas simultaneously pushes open light emitting assembly 123 and pressure relief valve 122. It can be understood that the shell assembly 1 has various pressure relief modes through the design, and the safety performance is improved.

In one embodiment, the cover 12 is provided with a handle 124, a handle cavity for accommodating a hand of a human body is provided between the handle 124 and the cover 12, and a honeycomb-shaped anti-slip structure 125 is formed on a side surface of the handle 124 close to the cover 12.

The embodiment also provides an electricity storage device, which comprises the housing assembly 1 and a battery structure 2 arranged inside the housing assembly 1.

Referring to fig. 6 to 8, in one embodiment, the power storage device further includes a circuit board 3 for electrically connecting with the battery structure 2.

Specifically, the circuit board 3 is provided with a first electrical contact, the circuit board 3 is provided with a connector 31, and one end of the connector 31 connected to the circuit board 3 is provided with a plurality of first electrical connectors 311 electrically connected to the first electrical contact. By fixing the connector 31 on the circuit board 3, the circuit connection failure caused by the separation of the electrical connecting piece and the first electrical contact caused by shaking in the using process or the circuit short circuit caused by dislocation can be prevented, and the reliability of the connector 31 is improved; in addition, the first electrical connector 311 of the connector 31 is electrically connected to the first electrical contact, so that the cable connection in the prior art is eliminated, the integration of the connector 31 on the circuit board 3 is improved, the internal space is released, and the cost for arranging the cable is reduced.

Further, the circuit board 3 is provided with a plurality of connection holes 32, the first electrical contact is disposed on a hole wall of the connection hole 32, and the first electrical connector 311 is inserted into the connection hole 32 and abuts against the hole wall of the connection hole 32. It is understood that when the connector 31 is fixed to the circuit board 3, the first electrical connector 311 is inserted into the connection hole 32 for easy assembly.

Referring to fig. 9, further, the connector 31 is provided with a plug column 312, and the plug column 312 is provided with a plug hole 313 corresponding to the first electrical connector 311. In the present embodiment, an external connector, such as a power plug, is connected to the plug column 312 in a matching manner, and a connection terminal of the power plug is inserted into the plug hole 313, so as to be electrically connected to the circuit board 3 through the first electrical connector 311.

Further, two adjacent plug columns 312 are spaced apart from each other. It can be understood that, by disposing two adjacent plugging columns 312 at intervals, the electrical isolation between the plugging columns 312 is realized, and the risk of short circuit is reduced.

Further, two adjacent plugging columns 312 of each group are spaced apart from each other by the same distance. It will be appreciated that by making the plug posts 312 easier to machine by the above design, the same mechanical components can be used to slot the blank of the connector 31 to form a plurality of plug posts 312 equally spaced.

Furthermore, the connector 31 is provided with a first plugging column 314 and a second plugging column 315, the first plugging column 314 is provided with a first plugging hole 316, the second plugging column 315 is provided with a second plugging hole 317, and the aperture of the first plugging hole 316 is larger than that of the second plugging hole 317. In this embodiment, the first plug-in post 314 is used for connecting with a large current terminal in the power plug, so a first plug-in hole 316 with a larger aperture is required to be provided, and the second plug-in post 315 is used for connecting with a data communication terminal in the power plug, so a second plug-in hole 317 with a smaller aperture is provided.

Further, the first plug-in post 314 is provided with a fool-proof protrusion 318 protruding toward the second plug-in post 315, and the second plug-in post 315 is provided with a fool-proof groove 319 avoiding the fool-proof protrusion 318. In this embodiment, through the above design, it is convenient for the installer to assemble the power plug and the connector 31, and according to the arrangement positions of the fool-proof protrusion 318 and the fool-proof groove 319, the installer can easily distinguish the installation direction, thereby improving the installation efficiency and preventing the connector 31 from being damaged due to the incorrect plugging direction.

Referring to fig. 6 to 8 again, in an embodiment, the circuit board 3 is formed with a receiving hole 33, and the circuit board 3 is formed with a second electrical connector 331; one end of the second electrical connector 331 is connected to the circuit board 3, the other end of the second electrical connector 331 extends toward the inside of the accommodating hole 33, the extending end of the second electrical connector 331 has elasticity, and the extending end has a second electrical contact for electrically connecting the battery structure 2.

The assembly principle of the circuit board 3 provided in the present embodiment is as follows:

the battery structure 2 is arranged in the power storage device, the battery structure 2 is provided with an electric joint, the circuit board 3 is also arranged in the power storage device, the second electric connecting piece 331 of the circuit board 3 is abutted to the electric joint of the battery structure 2 to realize the electric connection of the battery structure and the battery structure, the cable connection between the battery structure and the battery structure is avoided, meanwhile, the extending end of the second electric connecting piece 331 is elastic, namely, the second electric connecting piece 331 is flexibly connected with the battery structure 2, a small amount of relative displacement can be generated between the battery structure and the battery structure, and the connection failure of the battery structure and the battery structure in the moving process is avoided.

The circuit board 3 provided by the embodiment has the beneficial effects that:

firstly, the circuit board 3 is provided with the second electric connecting piece 331 with elasticity, so that the battery structure 2 is convenient to abut against the extending end of the second electric connecting piece 331 and is connected with the second electric contact, the mode of adopting cable connection is avoided, and the reliability is improved; secondly, the design adopts a mode that the second electric connecting piece 331 is directly connected with the battery structure 2, so that the space for arranging cables is saved, and the volume of the power storage device is reduced; finally, the extending end of the second electrical connector 331 is received in the receiving hole 33 of the circuit board 3, so that the second electrical connector 331 is prevented from contacting other components as much as possible, and the risk of short circuit is avoided.

Further, the accommodation hole 33 may be provided in the middle of the circuit board 3. Specifically, when the accommodating hole 33 is formed in the middle of the circuit board 3, that is, the second electrical connector 331 is located in the middle of the circuit board 3, and the electrical connector of the battery structure 2 is electrically connected to the second electrical connector 331 due to the design, the force of the battery structure 2 applied to the second electrical connector 331 can be uniformly transmitted to the circuit board 3, so as to improve the connection stability between the electrical connection and the battery structure 2.

Further, the receiving hole 33 has a first hole wall 332 and a second hole wall 333 which are oppositely arranged, and the circuit board 3 includes two second electrical connectors 331 which are oppositely arranged, wherein one of the second electrical connectors 331 is connected to the first hole wall 332, and the other second electrical connector 331 is connected to the second hole wall 333. It can be understood that, by arranging the two second electrical connectors 331 oppositely, the connection stability between the second electrical connectors 331 and the battery structure 2 is improved.

Furthermore, the accommodating hole 33 has a first hole wall 332 and a second hole wall 333 which are opposite to each other, and the circuit board 3 includes two second electrical connectors 331 which are arranged in a staggered manner, wherein one of the second electrical connectors 331 is connected to the first hole wall 332, and the other second electrical connector 331 is connected to the second hole wall 333. It can be understood that, by arranging the two second electrical connectors 331 in a staggered manner, the above design can reduce the space occupied by the two second electrical connectors 331 in the accommodating hole 33, and further can reduce the aperture of the accommodating hole 33, so as to achieve miniaturization of the circuit board 3, while satisfying the electrical connection with the battery structure 2.

Further, the second electrical connection member 331 is a metal spring, and the second electrical contact is formed on the metal spring. It can be understood that the metal elastic sheet has large deformable amplitude, which is beneficial to the flexible connection between the metal elastic sheet and the battery structure 2; specifically, when the electric vehicle drives the electricity storage device to move, the battery structure 2 can shake at a high frequency, and the connection failure between the metal elastic sheet and the battery structure 2 can be effectively avoided by arranging the metal elastic sheet.

Further, the circuit board 3 is provided with a connection pin seat 34 for butting with the battery structure 2. In the embodiment, by arranging the connector pin seat 34, the connection between the connector pin seat 34 and the battery structure 2 can be completed when the circuit board 3 is assembled, and the assembly efficiency is improved.

Further, the circuit board 3 is provided with a plurality of guide holes 35. The plurality of guide holes 35 are used for corresponding to the guide structures 21 on the battery structure 2, the guide holes 35 correspond to the guide structures 21 one by one, and the guide structures 21 are also provided with shock-absorbing silica gel rings 25, so that the shock absorption between the guide structures 21 and the battery shell 11 or the circuit board 3 is improved, the influence caused by high-frequency vibration of the electric vehicle is reduced, and meanwhile, the tolerance between the battery shell 11 or the circuit board 3 and the guide structures 21 is eliminated; in addition, the cooperation of the guide structure 21 and the guide hole 35 also limits the displacement of the battery structure 2, and avoids the battery structure 2 from generating large displacement when the electric vehicle vibrates at high frequency.

Further, the circuit board 3 is provided with a resilient thimble 36 for grounding. In this embodiment, when the circuit board 3 is mounted, the elastic ejector pins 36 abut against the battery case 11 to realize grounding of the circuit board 3, and the above design can release the static electricity of the battery structure 2 to the battery case 11 through the elastic ejector pins 36, thereby avoiding damage of the static electricity to the battery structure 2.

Referring to fig. 10, in one embodiment, the battery structure 2 includes: a first battery module 22, a second battery module 23, and a heating plate 24; the first battery module 22 and the second battery module 23 are arranged oppositely; the heating plate 24 is disposed between the first battery module 22 and the second battery module 23 and is used for generating heat after being electrified, and two opposite side surfaces of the heating plate 24 are respectively abutted against the side surface corresponding to the first battery module 22 and the side surface corresponding to the second battery module 23.

The battery structure 2 provided by the embodiment has the beneficial effects that:

in the prior art, a preset distance is formed between the two battery modules to ensure that the two battery modules are insulated from each other, so that the heating plate 24 is arranged between the first battery module 22 and the second battery module 23, the size of the battery structure 2 is not increased, and meanwhile, the heating plate 24 can have the function of a partition plate, so that the first battery module 22 and the second battery module 23 are insulated from each other, and the safety of the battery structure 2 is improved; in addition, one heating plate 24 of this embodiment can be to the side heating of two battery module that set up relatively, has improved the utilization ratio of heating plate 24.

Further, the heating plate 24 is a graphene plate. In this embodiment, after the graphene plate is electrified, the total conversion rate of the effective electric heat energy reaches more than 99%, and meanwhile, the stability of the heating performance can be ensured by adding special superconductivity.

Further, the heating plate 24 is an insulating plate provided with a resistance wire. In this embodiment, set up the resistance wire on the insulating board for the insulating board possesses the effect of keeping apart two battery module when not circular telegram, and after the resistance wire circular telegram, the resistance wire generates heat and makes the insulating board possess the heating function. It can be appreciated that the above design is inexpensive to manufacture and the solution is easy to implement.

Further, the first battery module 22 includes a plurality of first cells 221 arranged in an array, the second battery module 23 includes a plurality of second cells 231 arranged in an array, and one of the ends of the first cells 221 and one of the ends of the second cells 231 are respectively abutted on two opposite sides of the heating plate 24. Specifically, in the present embodiment, one end of the first cell 221 abuts against one side of the heating plate 24, and one end of the second cell 231 abuts against the other side of the heating plate 24, it can be understood that the ends of the electrode ions in the first cell 221 and the second cell 231 converge before being powered on, and the ends of the first cell 221 and the second cell 231 are heated by the heating plate 24, and heat is gradually transferred from the ends to the main body portions of the first cell 221 and the second cell 231, and the activity of the electrode ions is sequentially activated, so that the first battery module 22 and the second battery module 23 can operate normally.

Further, the length direction of the first cell 221 and the length direction of the second cell 231 are perpendicular to the two opposite sides of the heating plate 24, respectively. In the present embodiment, the arrangement of the first cell 221 and the second cell 231 can be made more compact by the above design, so that the battery capacities of the first battery module 22 and the second battery module 23 are made higher.

Further, the first battery module 22 further includes a first frame 222 and a second frame 223 which are disposed oppositely, the plurality of first battery cells 221 are fixed between the first frame 222 and the second frame 223, the first frame 222 is provided with a first through hole for exposing the end surface 201 of the first battery cell 221, the second battery module 23 further includes a third frame 232 and a fourth frame 233 which are disposed oppositely, the plurality of second battery cells 231 are fixed between the third frame 232 and the fourth frame 233, and the third frame 232 is provided with a second through hole 234 for exposing the end surface 201 of the second battery cell 231. In the present embodiment, the plurality of first cells 221 are fixed between the first frame 222 and the second frame 223, which improves the structural stability of the plurality of first cells 221, and similarly, the plurality of second cells 231 are fixed between the third frame 232 and the fourth frame 233, which improves the structural stability of the plurality of second cells 231. In addition, by providing the first and second perforations 234, it is facilitated to provide electrical connections for the first and second cells 221, 231.

Furthermore, a plurality of first bus bars are arranged on the first frame 222, fusible fuses are connected between the first bus bars and the first cell 221, a plurality of second bus bars 235 are arranged on the second frame 223, and fusible fuses are connected between the second bus bars 235 and the second cell 231. In this embodiment, the currents of the first battery cells 221 and the second battery cells 231 are respectively converged by setting the first bus piece and the second bus piece 235, so as to output a large current, and when the temperature of the first battery cell 221 or the second battery cell 231 exceeds a threshold value, the fuse can be fused in time by setting the fuse, thereby ensuring the safety of other battery cells and improving the safety.

Further, temperature probes are provided on the first battery module 22, the second battery module 23, and the heating plate 24. In another embodiment, a temperature probe is provided on one or both of the three components. It is understood that the temperature of the first battery module 22, the second battery module 23 and the heating plate 24 can be monitored in real time by providing the temperature probes to provide real-time temperature control data.

It is still another object of the present invention to provide an electric vehicle including the above-described electric storage device.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.