CN217589336U - Single battery and vehicle - Google Patents

Abstract

The utility model relates to a power battery technical field discloses a battery cell and vehicle. The single battery comprises a shell and a battery core. The shell is connected with a pole in an insulating way, one end of the pole is exposed, and the other end of the pole extends into the shell; the battery cell is arranged in the shell, the battery cell is provided with a tab, and the tab is connected with the pole through a first conductive adhesive layer. The vehicle includes the above-described battery cell. The utility model discloses avoid utilizing ultrasonic bonding's mode to realize being connected between utmost point ear and the utmost point post, reduced the damaged and short circuit's of insulating diaphragm possibility in the electric core, improved the security of battery cell and vehicle.

Description

Single battery and vehicle

Technical Field

The utility model relates to a power battery technical field especially relates to a battery cell and vehicle.

Background

With the development of power battery technology, power batteries are widely used in the field of vehicles. The single battery comprises a shell and a battery core arranged in the shell. The shell is provided with two polar columns which are respectively connected with two polar lugs of the battery cell in an ultrasonic welding mode. The unit cells are often subjected to vibrations during production, transportation or movement with the vehicle. However, in the process of ultrasonic welding, metal particles can be generated, if the metal particles fall onto the insulating diaphragm, the metal particles rub with the insulating diaphragm along with the vibration process, so that the insulating diaphragm is damaged, the positive plates and the negative plates on two sides of the insulating diaphragm are contacted, the electric core is short-circuited, and the safety of the battery is reduced.

Based on this, there is a need for a single battery and a vehicle to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a battery cell to avoid utilizing welded mode to realize being connected between utmost point ear and the utmost point post, reduced the damaged and short circuit's of insulating diaphragm possibility in the electric core, improved battery cell's security.

Another object of the utility model is to provide a vehicle reduces the possibility of battery cell short circuit, has improved the security of vehicle.

To achieve the purpose, the utility model adopts the following technical proposal:

a cell, comprising:

the terminal post is connected to the shell in an insulating mode, one end of the terminal post is exposed, and the other end of the terminal post extends into the shell;

the battery cell is arranged in the shell, the battery cell is provided with a pole lug, and the pole lug is connected with the pole column through a first conductive adhesive layer.

As an optional technical scheme of the single battery, the single battery further comprises a conductive piece, the conductive piece is arranged in the shell, the conductive piece is bonded with the pole column through a second conductive adhesive layer, and the pole lug is bonded with the pole column through a first conductive adhesive layer.

As an optional technical scheme of the single battery, the surface of the pole column, which is used for being connected with the conductive piece, is provided with a glue storage groove.

As an optional technical scheme of the single battery, a plurality of first pits are arranged on the surface, connected with the pole, of the conductive piece, and the first pits are arranged in an array mode.

As an optional technical scheme of the single battery, a plurality of second concave pits are arranged on a surface of the conductive piece, which is used for being connected with the tabs, and the second concave pits are arranged in an array manner.

As an optional technical scheme of battery cell, electrically conductive including utmost point ear end with laminate in the utmost point post end of utmost point post terminal surface, utmost point ear end with utmost point post end angulation is connected, the coating has on the utmost point post the second conductive adhesive layer, and pass through the second conductive adhesive layer with utmost point post end bonds, utmost point ear end coats and has first conductive adhesive layer, and passes through first conductive adhesive layer with utmost point ear bonds.

As an optional technical scheme of the single battery, the conductive piece is in a sheet shape, the tail end of the lug is bent to form a bent part, the first conductive adhesive layer is coated on the end face of the first end of the conductive piece and is bonded with the bent part, the second conductive adhesive layer is coated on the pole and is bonded with the end face of the second end of the conductive piece.

As an optional technical solution of the single battery, the first conductive adhesive layer and the second conductive adhesive layer are made of the same material.

As an optional technical scheme of the single battery, the battery core is coated with an insulating film, and the tab extends out of the insulating film.

A vehicle comprising a cell as described above.

The utility model has the advantages that:

the utility model provides a single battery, including shell and electric core. Wherein adopt first conductive adhesive layer to be connected between the utmost point ear of electric core and the utmost point post, avoided utilizing welded mode to realize the electrically conductive connection between utmost point ear and the utmost point post, reduced among the electric core insulating diaphragm damage and then lead to the possibility of electric core short circuit, improved battery cell's security, avoided welded process moreover, reduced the demand to welding equipment, reduced manufacturing cost.

The utility model provides a vehicle, including above-mentioned battery cell. The possibility of short circuit of the single battery is reduced, and the safety of the vehicle is improved.

Drawings

Fig. 1 is a schematic structural diagram of a first view angle of a single battery according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a cover plate according to a first embodiment of the present invention;

fig. 3 is a schematic structural diagram of a first viewing angle after the cover plate and the conductive member are assembled according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a second viewing angle after the cover plate and the conductive member are assembled according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a second viewing angle of a single battery according to an embodiment of the present invention;

FIG. 6 is an enlarged view of a portion of FIG. 5 at A;

fig. 7 is a schematic structural diagram of a third view angle of a single battery according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a single battery provided in the second embodiment of the present invention;

fig. 9 is a schematic structural diagram of a battery cell provided in the second embodiment of the present invention;

fig. 10 is a cross-sectional view of a single battery provided in an embodiment of the present invention;

fig. 11 is a partial enlarged view at B in fig. 10.

In the figure:

1. a cover plate; 11. accommodating grooves; 2. a pole column;

3. a conductive member; 31. a pole end; 32. a lug end; 321. a fitting section; 322. an inclined section; 323. a connecting section;

4. an electric core; 41. a tab; 411. a straight section; 412. a protruding end portion; 413. a bending section;

5. a liquid injection hole; 6. an explosion-proof valve.

Detailed Description

In order to make the technical problem solved by the present invention, the technical solutions adopted by the present invention and the technical effects achieved by the present invention clearer, the following will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation of the first and second features not being in direct contact, but being in contact with another feature between them. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

Example one

The present embodiment provides a unit cell. Specifically, as shown in fig. 1 and 2, the unit battery includes a case and a battery cell 4. The shell is connected with two polar posts 2 in an insulating way, one end of each polar post 2 is exposed, and the other end of each polar post 2 extends into the shell; in the shell was arranged in to electric core 4, electric core 4 was equipped with utmost point ear 41, and utmost point ear 41 and utmost point post 2 of electric core 4 are connected through first conductive adhesive layer.

It can be understood that, be provided with two utmost point ears 41 on electric core 4, two utmost point ears 41 are anodal utmost point ear and negative pole utmost point ear respectively, are provided with two utmost point posts 2 on the shell, and two utmost point posts 2 are anodal utmost point post and negative pole utmost point post respectively, and anodal utmost point post is connected with anodal utmost point ear, and negative pole utmost point post is connected with negative pole utmost point ear. And the pole 2 for connecting the positive pole lug is made of aluminum, and the pole 2 for connecting the negative pole lug is made of copper. In other embodiments, the two poles 2 may also be made of other materials, which is not limited herein.

The single battery provided by the embodiment comprises a shell and a battery core 4. Wherein all adopt conductive adhesive layer (being first conductive adhesive layer) to bond between utmost point ear 41 of electric core 4 and utmost point post 2, avoided utilizing welded mode to realize the electrically conductive connection between utmost point ear 41 and the utmost point post 2, reduced among the electric core 4 insulating diaphragm damage and then leaded to the possibility of electric core 4 short circuit, improved battery cell's security, avoided welded process moreover, reduced the demand to welding equipment, reduced manufacturing cost.

In this embodiment, the material of the first conductive adhesive layer is a conductive adhesive, preferably a conductive adhesive containing a solvent. Which comprises a curing agent and epoxy resin mixed with silver powder or silver-plated copper powder. The mixing ratio between the two materials can refer to the prior art, or the material of the conductive adhesive can be selected from other materials in the prior art, such as carbon powder filled conductive adhesive, gold powder filled conductive adhesive, etc., which are not regarded as the protection focus of this embodiment and are not described herein again.

Further, as shown in fig. 1 to 5, the single battery further includes a conductive member 3, the conductive member 3 is disposed in the housing, the conductive member 3 is bonded to the terminal post 2 through a second conductive adhesive layer, and the tab 41 is bonded to the terminal post 2 through a first conductive adhesive layer. Two electrically conductive 3 all arrange the shell in, two electrically conductive 3 bond through second conductive adhesive layer with two utmost point posts 2 respectively. The conductive piece 3 is arranged, so that the connection between the tab 41 and the pole 2 is facilitated, and the convenience of production and assembly is improved.

It can be understood that the conductive pieces 3 are provided with two, one conductive piece 3 is connected between the positive electrode post and the positive electrode tab, and the other conductive piece 3 is connected between the negative electrode post and the negative electrode tab. And the conductive piece 3 for connecting the positive electrode tab is made of aluminum, and the conductive piece 3 for connecting the negative electrode tab is made of copper. In other embodiments, the two conductive members 3 may also be made of the same material, which is not limited herein.

In this embodiment, the second conductive adhesive layer and the first conductive adhesive layer are made of the same material, so that the requirement for the type of the conductive adhesive is reduced.

The single battery in this embodiment is a square-shell battery, i.e., the shell is a cuboid. As shown in fig. 2 and fig. 3, the housing includes a hollow casing (not shown in the figure) and a cover plate 1, the hollow casing has an opening at one end, the cover plate 1 blocks the opening, the cover plate 1 is connected with two poles 2 in an insulating manner, and one end of each pole 2 penetrates through the cover plate 1 to extend into the housing. Further, the cover plate 1 and the shell are both made of aluminum, and the cover plate 1 and the shell can be connected through welding. In addition, the connection mode between the post 2 and the cover plate 1 can refer to the prior art, and is not described herein again.

In the present embodiment, as shown in fig. 5 and fig. 6, the battery cell 4 is a full tab winding core, the tab 41 of the battery cell 4 is formed by winding the edge of a pole piece, and the flat section 411 is formed by compression welding at the middle part of the tab 41. Both ends of the straight section 411 in the width direction of the tab 41 form an arc-shaped protruding end portion 412, and the thickness of the protruding end portion 412 is greater than that of the straight section 411. It can be understood that the two tabs 41 of the battery cell 4 in this embodiment are respectively located at two opposite ends of the battery cell 4. And only one battery core 4 is arranged, so that the number of the conductive pieces 3 in the shell is reduced, the internal structure of the single battery is simplified, the energy density of the battery is ensured, and the increase of the quality of the single battery is avoided.

In this embodiment, as shown in fig. 1 to 5, two electrode posts 2 are respectively disposed at two ends of the cover plate 1, the cover plate 1 is located at one side of the tab 41 along the width direction, and the two electrode posts 2 are respectively disposed opposite to the two tab 41, that is, the electrode posts 2 are located at one side of the corresponding tab 41 along the width direction. This arrangement further facilitates the connection of the tab 41 with the conductive member 3.

As preferred scheme, electrically conductive 3 includes utmost point ear end 32 and utmost point post end 31, and utmost point post end 31 laminates and arranges the terminal surface of the inboard one end of shell in utmost point post 2, and the coating has the second conductive adhesive layer on utmost point post 2 to bond through second conductive adhesive layer and utmost point post end 31, and utmost point ear end 32 connects in utmost point ear 41 through first conductive adhesive layer, and the coating has first conductive adhesive layer on utmost point ear end 32, and bonds with utmost point ear 41 through first conductive adhesive layer, and utmost point ear end 32 and utmost point post end 31 are angled to be connected. The aforesaid structure sets up, and utmost point post end 31 is connected with the laminating of utmost point post 2, has guaranteed the area of being connected between 3 electrically conductive and utmost point post 2, has guaranteed the firm connection between 3 electrically conductive and utmost point post 2, and utmost point ear end 32 becomes angle with utmost point post end 31 to be connected moreover, and the utmost point ear end 32 of being convenient for extends towards utmost point ear 41 that corresponds, and utmost point ear 41 of being convenient for bonds with electrically conductive 3, and the production and processing of being convenient for has also avoided the process of utmost point ear 41 of buckling simultaneously, has guaranteed production efficiency. In this embodiment, the pole terminal 31 is a sheet, the tab terminal 32 is a flat bar, and the tab terminal 32 and the pole terminal 31 are integrally connected and formed by bending a metal member. In other embodiments, the tab end 32 and the post end 31 may be connected by welding, which is not limited herein.

In addition, the pole 2 is coated with conductive adhesive, the pole end 31 is adhered to the pole 2, and the pole 2 is fixed on the cover plate 1, so that the clamping and fixing area is large, and the adhering operation is convenient. The conductive adhesive is coated on the tab end 32, the tab 41 is adhered to the tab end 32, and the conductive adhesive is coated on the tab end 32 due to the fact that the tab 41 is soft, so that the first conductive adhesive layer is prevented from being bent, and firm adhesion between the tab end 32 and the tab 41 is guaranteed.

Further, utmost point post 2 is used for having seted up on the face of being connected with utmost point post end 31 and has stored up gluey groove, stores up gluey groove and can store electrically conductive adhesive, has avoided utmost point post end 31 and utmost point post 2 between electrically conductive adhesive too few, has guaranteed utmost point post 2 and utmost point post end 31 and can firmly bond, has guaranteed battery cell's structural stability to battery cell power supply function's stability has been guaranteed. In other embodiments, the surface of the tab end 32 facing the tab 41 may also be provided with a glue storage groove, so as to ensure firm bonding between the tab end 32 and the tab 41, further ensure the structural stability of the single battery, and ensure the stability of the power supply function of the single battery.

Furtherly again, electrically conductive 3 is used for being provided with a plurality of first pits on the face of being connected with utmost point post 2, and first pit specifically sets up on utmost point post end 31 is used for the face of being connected with utmost point post 2, and a plurality of first pit arrays arrange, set up first pit, can increase the area of contact between utmost point post end 31 and the second conductive adhesive layer, has further guaranteed the fixed bonding between utmost point post end 31 and the utmost point post 2. Similarly, a plurality of second concave pits are formed in the surface, connected with the tab 41, of the conductive piece 3, the second concave pits are specifically formed in the surface, connected with the tab 41, of the tab end 32, and the second concave pits are arranged in an array mode. Wherein, the first pit and the second pit can be both set as punctiform pits. The number of the first pits and the second pits can be adjusted adaptively, and is not limited herein. In other embodiments, the surface of the pole end 31 connected with the pole 2 and the surface of the pole ear end 32 connected with the pole ear 41 can also be provided as rough planes.

Preferably, as shown in fig. 4-6, a receiving groove 11 is opened on the surface of the cover plate 1 located at the inner side of the housing, the pole terminal 31 is placed in the receiving groove 11, and the pole 2 passes through the cover plate 1 at the receiving groove 11 and is attached to the pole terminal 31. Set up holding tank 11, be convenient for confirm the second conductive adhesive layer set up the position and the mounted position of electrically conductive 3 on apron 1, be convenient for improve production efficiency, reduced the time cost of production, improved the compactness of battery cell structure simultaneously, do benefit to the volume that reduces battery cell.

Preferably, as shown in fig. 6, the tab end 32 includes a fitting section 321 and an inclined section 322 arranged in the width direction of the tab 41, and the first conductive adhesive layer is coated on the fitting section 321. The attaching section 321 extends in the width direction of the tab 41. The straight section 411 is attached to the attaching section 321 through a first conductive adhesive layer, the first end of the inclined section 322 is connected to one end of the attaching section 321 in the width direction, and the second end of the inclined section 322, which is far away from the first end, is inclined towards the direction far away from the protruding end 412 and is connected with the pole terminal 31. Set up laminating section 321, guaranteed the connection area between 3 and utmost point ear 41 of electrically conductive piece, guaranteed to electrically conductive 3 and utmost point ear 41 between firm being connected, slope section 322 sets up towards the direction slope of keeping away from protruding tip 412, make slope section 322 can play the effect of dodging protruding tip 412, it interferes to have avoided protruding tip 412 and produce between 3 electrically conductive piece, further guaranteed the firm connection between 3 and utmost point ear 41 of electrically conductive piece, single cell's power supply effect has been guaranteed, also avoided simultaneously laminating section 321 to break away from behind utmost point ear 41 and insulating diaphragm to take place the friction, the inside short circuit of single cell that insulating diaphragm damage leads to has been avoided, the security of battery has been guaranteed.

Further, the tab end 32 further includes a connecting section 323, the connecting section 323 extends along the width direction of the tab 41, that is, the connecting section 323 is disposed parallel to the attaching section 321, one end of the connecting section 323 is connected to the second end of the inclined section 322, and the other end is connected to the post end 31. In summary, the tab end 32 is a Z-shaped structure, and the tab end 32 is formed by bending twice. Compared with the case that the inclined section 322 is directly connected with the pole terminal 31, the connecting section 323 is arranged, so that the avoiding space for avoiding the protruding end part 412 is further enlarged, the interference between the protruding end part 412 and the conductive piece 3 is further avoided, the firm connection between the conductive piece 3 and the pole lug 41 is further ensured, and the safety of the battery is also ensured.

In other embodiments, there may also be two cover plates 1, at this time, the inside of the casing is hollow, and both ends of the casing are open, the two cover plates 1 respectively block the two openings, each cover plate 1 is connected with one terminal post 2 in an insulating manner, one end of the terminal post 2 penetrates through the corresponding cover plate 1 to extend into the casing, and the two ends of the battery cell 4, at which the terminal posts 41 are disposed, face the two cover plates 1 respectively. The pole column 2 is located on one side of the tab 41 far away from the battery core 4, and the tab end 32 can be in a sheet shape, and is directly attached to the straight section 411 and connected through a first conductive adhesive layer.

As shown in fig. 5 and 7, two conductive elements 3 are located on the same side of the battery cell 4, so that the tab 41 is prevented from being turned over when the conductive elements 3 are connected with the tab 41, the production and processing are facilitated, and the production efficiency is further ensured.

Preferably, the battery cell 4 is coated with an insulating film, and the tab 41 protrudes from the insulating film. The insulating film is arranged to play an insulating role between the battery core 4 and the shell, so that the shell is prevented from being electrified, and the safety of the single battery is ensured. In this embodiment, the insulating film is a Mylar film, i.e., a polyester film. The Mylar film is annular, and has openings at both ends, and two tabs 41 of the battery cell 4 extend out of the insulating film through the two openings.

Furthermore, the cover plate 1 is also provided with an explosion-proof valve 6 and a liquid injection hole 5. The arrangement of the liquid injection hole 5 is convenient for injecting liquid into the shell. The safety of the single battery is improved due to the arrangement of the explosion-proof valve 6. The structure of the explosion-proof valve 6 can be referred to the prior art, and is not described in detail herein.

The embodiment also provides a vehicle. The vehicle includes a single cell as described hereinbefore. The vehicle provided by the embodiment reduces the possibility of short circuit of the single battery and improves the safety of the vehicle.

In this embodiment, the vehicle includes the battery package, and the battery package includes a plurality of battery module and box, and a plurality of battery module are arranged in the box, box and vehicle chassis fixed connection. And a liquid cooling plate can be arranged in the box body and used for adjusting the temperature of the single battery. The battery module comprises a plurality of single batteries which are arranged in parallel. Other structures of the battery pack and other structures of the battery module can refer to the prior art, and are not described herein again.

Example two

As shown in fig. 8 to fig. 11, the present embodiment provides a single battery and a vehicle, and the structures of the single battery and the vehicle provided in the present embodiment are substantially the same as those in the first embodiment, and only some of the structures are different, and the structures that are the same as those in the first embodiment are not described again in the present embodiment.

In the present embodiment, as shown in fig. 8 and 9, the cover plate 1 is provided with one. The battery cell 4 is a laminated battery cell, and the tab 41 of the battery cell 4 is formed by die cutting the edge of the pole piece. Two utmost point ears 41 of electricity core 4 are located same one end of electricity core 4, and electricity core 4 sets up utmost point ear 41 towards the one end of apron 1, and two utmost point posts 2 are just to setting up with two utmost point ears 41 respectively. One end of the insulating film is open, and two tabs 41 protrude out of the insulating film through the opening.

Preferably, as shown in fig. 10 and 11, the conductive component 3 is in a sheet shape, the tab 41 is disposed at one end of the battery cell 4 facing the electrode post 2, the end of the tab 41 is bent to form a bent portion 413, a first conductive adhesive layer is coated on the end surface of the first end of the conductive component 3, and is bonded to the bent portion 413 through the first conductive adhesive layer, a second conductive adhesive layer is coated on the electrode post 2, and is bonded to the end surface of the second end of the conductive component 3 through the second conductive adhesive layer, so that the conductive component 3 is bonded to the end surface of the electrode post 2. Above-mentioned structure sets up, guaranteed the area of connection before electrically conductive 3 and utmost point post 2, guaranteed the firm connection between electrically conductive 3 and utmost point post 2, the area of connection between electrically conductive 3 and utmost point ear 41 has also been guaranteed, firm connection between electrically conductive 3 and utmost point ear 41 has been guaranteed, the power supply of battery cell has been guaranteed, also prevented simultaneously that electrically conductive 3 breaks away from behind utmost point post 2 and utmost point ear 41 and rubs with insulating diaphragm, the inside short circuit of battery cell that the insulating diaphragm damage leads to has been avoided, the security of battery has been guaranteed. In this embodiment, the end surface of the first end of the conductive member 3 is provided with the second recess, and the end surface of the second end of the conductive member 3 is provided with the first recess.

Further, electric core 4 is provided with at least two, and two utmost point ears 41 of every electric core 4 equally divide and do not bond through first conductive adhesive layer with two electrically conductive 3 pieces, have reduced the lamination number of piles of every electric core 4, are convenient for the production and processing of every electric core 4. In this embodiment, the battery cell 4 is provided with two, the tab 41 with the same polarity on two battery cells 4 is connected with the same conductive piece 3, and the bending portion 413 on the tab 41 with the same polarity bends toward each other, so as to facilitate reducing the size of the conductive piece 3, thereby facilitating reducing the size of the single battery. In other embodiments, only one battery cell 4 may be provided, which is not limited herein.

The embodiment also provides a vehicle. The vehicle includes a cell as described hereinbefore. The vehicle provided by the embodiment reduces the possibility of short circuit of the single battery and improves the safety of the vehicle.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. A battery cell, comprising:

the terminal post structure comprises a shell, wherein a terminal post (2) is connected to the shell in an insulating mode, one end of the terminal post (2) is exposed, and the other end of the terminal post (2) extends into the shell;

the battery cell (4) is arranged in the shell, the battery cell (4) is provided with a tab (41), and the tab (41) is connected with the pole (2) through a first conductive adhesive layer.

2. The single battery according to claim 1, further comprising a conductive member (3), wherein the conductive member (3) is disposed in the housing, the conductive member (3) is bonded to the terminal post (2) through a second conductive adhesive layer, and the tab (41) is bonded to the terminal post (2) through the first conductive adhesive layer.

3. The single battery according to claim 2, wherein a glue storage groove is formed on the surface of the pole (2) for connecting with the conductive member (3).

4. The single battery according to claim 2, wherein a plurality of first concave pits are arranged on the surface of the conductive member (3) for connecting with the pole (2), and the plurality of first concave pits are arranged in an array.

5. The single battery according to claim 2, wherein the conductive member (3) is provided with a plurality of second recesses on the surface for connecting with the tabs (41), and the plurality of second recesses are arranged in an array.

6. The single battery according to any one of claims 2-5, wherein the conductive member (3) comprises a pole ear end (32) and a pole post end (31) attached to the end surface of the pole post (2), the pole ear end (32) and the pole post end (31) are connected in an angle, the pole post (2) is coated with the second conductive adhesive layer and is bonded with the pole post end (31), and the pole ear end (32) is coated with the first conductive adhesive layer and is bonded with the pole lug (41).

7. The battery cell according to any one of claims 2 to 5, wherein the conductive member (3) is in a sheet shape, the end of the tab (41) is bent to form a bent portion (413), the conductive member (3) has a first conductive adhesive layer coated on the end surface of the first end and is bonded to the bent portion (413) through the first conductive adhesive layer, and the electrode post (2) has a second conductive adhesive layer coated on the end surface and is bonded to the end surface of the second end of the conductive member (3) through the second conductive adhesive layer.

8. The battery cell according to any one of claims 2-5, wherein the first conductive adhesive layer and the second conductive adhesive layer are made of the same material.

9. The cell according to any one of claims 1 to 5, characterised in that the cell (4) is coated with an insulating film, the tabs (41) protruding through the insulating film.

10. A vehicle characterized by comprising the unit battery according to any one of claims 1 to 9.

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