CN217691368U - Single battery and battery device - Google Patents

Abstract

The disclosure relates to the technical field of batteries, and discloses a single battery and a battery device; the single battery comprises a battery body and an insulating film; the battery body is provided with an identification part; the insulating film integrally covers at least a part of the label portion and at least a part of the battery body to protect the label portion. The single battery can avoid the damage of the identification part, thereby ensuring the normal use of the identification part; even if the single battery is stored for a long time, the mark part is shielded by dust falling on the insulating film, the dust on the insulating film is easy to remove, and the normal use of the mark part is ensured.

Description

Single battery and battery device

Technical Field

The present disclosure relates to the field of battery technologies, and in particular, to a single battery and a battery device including the same.

Background

With the rapid development of modern industry, the problems of environmental pollution, energy shortage, resource exhaustion and the like are more and more prominent. In order to maintain the sustainable development of economy, protect the environment and energy supply of human living, zero emission of the battery device is the first choice as a new energy source.

However, the two-dimensional code of the current single battery is easily shielded or damaged, so that the normal use is affected.

It is to be noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the present disclosure, and thus may include information that does not constitute prior art known to those of ordinary skill in the art.

SUMMERY OF THE UTILITY MODEL

The purpose of the present disclosure is to overcome the above-mentioned disadvantage that the two-dimensional code of the related art is easily sheltered from or damaged, and provide a single battery and a battery device including the same, in which the two-dimensional code is not easily sheltered from or damaged.

According to an aspect of the present disclosure, there is provided a unit battery including:

a battery body provided with a marking part;

an insulating film integrally covering at least a part of the identification part and at least a part of the battery body to protect the identification part.

According to the single battery disclosed by the invention, on one hand, the identification part is arranged on the battery body, when the single battery is installed to form a battery module or a battery pack, a worker can obtain relevant information of the single battery through the identification part to support subsequent installation, and meanwhile, the battery can be traced after the subsequent battery is repaired; on the other hand, the mark part is coated by the insulating film, and the insulating film can protect the mark part and avoid the damage of the mark part, so that the normal use of the mark part is ensured; on the other hand, even if the single battery is stored for a long time, the mark part is shielded by dust falling on the insulating film, the dust on the insulating film is easy to remove, and the normal use of the mark part is ensured.

According to another aspect of the present disclosure, there is provided a battery device including: the single battery is described above.

According to the battery device, on one hand, the identification part is arranged on the battery body, when the single batteries are installed to form the battery module or the battery pack, workers can obtain relevant information of the single batteries through the identification part to support subsequent installation, and meanwhile, the batteries can be traced after the subsequent battery repair; on the other hand, the mark part is coated by the insulating film, and the insulating film can protect the mark part and avoid the damage of the mark part, so that the normal use of the mark part is ensured; on the other hand, even if the single battery is stored for a long time, the mark part is shielded by dust falling on the insulating film, the dust on the insulating film is easy to remove, and the normal use of the mark part is ensured; to sum up, can protect the sign portion in the sign portion through insulating film cladding, the staff can obtain the relevant information of battery cell and install again, makes the performance of a plurality of battery cells in a battery device keep unanimous as far as possible, guarantees battery device's wholeness ability and life.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure. It is to be understood that the drawings in the following description are merely exemplary of the disclosure, and that other drawings may be derived from those drawings by one of ordinary skill in the art without the exercise of inventive faculty.

Fig. 1 is a schematic structural diagram of an exemplary embodiment of a single cell according to the present disclosure.

Fig. 2 is a schematic structural view of another exemplary embodiment of a unit cell according to the present disclosure.

Fig. 3 is a schematic structural view of the battery body of fig. 1 and 2.

Fig. 4 is a schematic view of the structure of the insulating film in fig. 1.

Fig. 5 is a schematic view of the structure of the insulating film in fig. 2.

Fig. 6 is a schematic structural view of yet another example embodiment of a unit cell of the present disclosure.

Fig. 7 is a partial schematic structural view of still another example embodiment of a unit cell according to the present disclosure.

Description of the reference numerals:

1. a battery body; 1a, a battery case; 11. a first side surface; 12. a second side surface; 13. a top surface; 131. a marking part; 14. a bottom surface; 15. a battery post; 16. an explosion-proof valve; 17. an electric core;

2. an insulating film; 21. a body portion; 211. a first avoidance portion; 212. a second avoidance portion; 213. a third avoidance portion; 22. a foldable portion; 23. a covering section;

31. an insulating base plate; 32. an insulating top plate; 33. a fourth avoidance portion; 34. a fifth avoidance part; 35. a sixth avoidance portion;

41. a first adhesive layer; 42. a second adhesive layer; 5. a peeling part.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted. Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale.

Although relative terms, such as "upper" and "lower," may be used in this specification to describe one element of an icon relative to another, these terms are used in this specification for convenience only, e.g., in accordance with the orientation of the examples described in the figures. It will be appreciated that if the device of the icon were turned upside down, the element described as "upper" would become the element "lower". When a structure is "on" another structure, it may mean that the structure is integrally formed with the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure via another structure.

The terms "a," "an," "the," "said," and "at least one" are used to indicate the presence of one or more elements/components/parts/etc.; the terms "comprising" and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc.; the terms "first," "second," and "third," etc. are used merely as labels, and are not limiting on the number of their objects.

In this application, unless expressly stated or limited otherwise, the term "coupled" is to be construed broadly, e.g., "coupled" may be a fixed connection or a releasable connection or may be integral; may be directly connected or indirectly connected through an intermediate. "and/or" is only an association relationship describing an associated object, and indicates that three relationships may exist, for example, a and/or B, and may indicate: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter associated objects are in an "or" relationship.

The present disclosure provides a unit cell, which may include a cell body 1 and an insulating film 2, as shown with reference to fig. 1 to 7; the battery body 1 is provided with a mark part 131; the insulating film 2 integrally covers at least a part of the label 131 and at least a part of the battery body 1 to protect the label 131.

According to the single battery disclosed by the invention, on one hand, the identification part 131 is arranged on the battery body 1, when the single battery is installed to form a battery module or a battery pack, a worker can obtain relevant information of the single battery through the identification part 131 to support subsequent installation, and meanwhile, the battery can be traced after the subsequent battery is repaired; on the other hand, the insulating film 2 covers the identification part 131, and the insulating film 2 can protect the identification part 131 and avoid the damage of the identification part 131, so that the normal use of the identification part 131 is ensured; on the other hand, even if the single battery is stored for a long time and causes dust falling on the insulating film 2 to shield the mark portion 131, the dust on the insulating film 2 can be easily removed, and the normal use of the mark portion 131 is ensured.

In the present example embodiment, the unit battery may include a battery body 1, which may include a battery case 1a, a battery cell 17, and a battery post 15, and the like.

The single body may be in the shape of a rectangular parallelepiped, and correspondingly, the battery case 1a may be in the shape of a rectangular parallelepiped, as shown in fig. 3, and specifically may include a top surface 13 and a bottom surface 14, two first side surfaces 11 and two second side surfaces 12, which are oppositely disposed, where a width of the first side surface 11 is smaller than a width of the second side surface 12; the two first side surfaces 11 and the two second side surfaces 12 are connected end to end and surround to form a cuboid cylinder shape; the top surface 13 is connected to one side of the two first side surfaces 11 and the two second side surfaces 12, and the bottom surface 14 is connected to the other side of the two first side surfaces 11 and the two second side surfaces 12, i.e. the top surface 13 and the bottom surface 14 are oppositely arranged. The top surface 13, the bottom surface 14, the two first side surfaces 11 and the two second side surfaces 12 surround to form a containing cavity. Of course, in other example embodiments of the present disclosure, the battery case 1a may be further configured as a cylinder, a prism, a truncated pyramid, a circular truncated cone, and other structures as needed, which are not described herein again. The material of the battery case 1a may be aluminum, steel, or other metal and alloy materials, and of course, other materials may be used, which are not described herein.

In the present exemplary embodiment, a battery cell 17 is provided in the accommodating cavity of the battery case 1a, and the battery cell 17 is provided as a rectangular parallelepiped that fits in the battery case 1 a. A battery cell 17 protection film is arranged outside the battery cell 17, the battery cell 17 protection film is arranged into a cuboid barrel shape matched with the battery cell 17, a battery cell 17 supporting plate is arranged at the bottom of the battery cell 17, and the battery cell 17 supporting plate and the battery cell 17 protection film enable the battery cell 17 and the battery shell 1a to be insulated.

Two battery posts 15, namely a positive post and a negative post, are disposed on one side of the battery cell 17 close to the top surface 13. The positive and negative posts may protrude from the top surface 13 out of the battery case 1 a.

An explosion-proof valve 16 may also be provided between the positive and negative posts. The explosion-proof valve 16 can be a weak structure arranged on the top surface 13, and after the battery cell 17 is out of control due to heat, the weak structure (the explosion-proof valve 16) on the battery shell 1a can be broken by high-temperature gas, sparks and high-temperature solid particles and is sprayed out from the weak structure. The weak structures may be scratches, notches, etc. provided on the top surface 13; it is also possible that the thickness of the top surface 13 at the explosion-proof valve 16 is smaller than the thickness of the top surface 13 at other positions, so that high-temperature gas, sparks and high-temperature solid particles can firstly burst the explosion-proof valve 16 to be ejected.

A marking part 131 of the battery body 1 is further arranged on the side, away from the battery core 17, of the top surface 13, and the marking part 131 may be a two-dimensional code or a bar code; of course, two kinds of the identification portions 131, i.e., the two-dimensional code and the barcode, may be provided as necessary. When the single batteries are assembled to form a battery module or a battery pack, the staff may scan the identification part 131 to obtain information related to the single batteries, such as weight, volume, charging voltage, charging current, discharging voltage, charging and discharging current, etc. of the single batteries, and also obtain some production related information of the single batteries, such as production date, procedures, etc., which are not described herein.

Therefore, after the identification portion 131 is shielded or damaged, the staff cannot acquire the relevant information of the single battery, and the single battery needs to be detected and measured again, so that the workload of the staff is increased, the working efficiency is reduced, and the labor cost and the detection cost are increased. Moreover, some information can be obtained after the single battery is detected and measured again, and some information cannot be obtained after the single battery is detected and measured again, so that subsequent quality control or quality guarantee cannot be well controlled.

In addition, one of the battery posts 15 of the battery body 1 may be connected to the battery case 1a, so that the battery case 1a is also charged when the unit battery is charged or discharged, and therefore, the outside of the battery case 1a needs to be insulated.

In some example embodiments of the present disclosure, referring to fig. 6, a body portion 21 of the insulating film 2 may be disposed outside the battery case 1a, and the body portion 21 of the insulating film 2 may be disposed in a rectangular parallelepiped shape adapted to the battery case 1a, that is, the body portion 21 of the insulating film 2 is disposed on a surface of the two first side surfaces 11 and the two second side surfaces 12 facing away from the battery cell 17; an insulating bottom plate 31 may be disposed at the bottom of the battery case 1a, that is, an insulating bottom plate 31 may be disposed on a side of the bottom surface 14 away from the battery cell 17; an insulating top plate 32 may be disposed on the top of the battery case 1a, that is, an insulating top plate 32 is disposed on a side of the top surface 13 away from the battery cell 17; the body portion 21 of the insulating film 2 insulates the battery case 1a from the outside with the insulating bottom plate 31 and the insulating top plate 32.

Further, two fourth escaping portions 33 may be provided on the insulating top plate 32, the fourth escaping portions 33 may be via holes penetrating through the insulating top plate 32, and if the fourth escaping portions 33 are provided at the edge portion of the insulating top plate 32, the fourth escaping portions 33 may also be notches penetrating through the insulating top plate 32; the fourth portion of dodging 33 sets up with battery utmost point post 15 is relative, and the fourth portion of dodging 33 is used for dodging battery utmost point post 15, and positive post and negative pole post can stretch out through two fourth portions of dodging 33 one-to-one promptly, make things convenient for being connected of positive post and negative pole post and busbar.

The insulating top plate 32 may further be provided with a fifth relief portion 34, the fifth relief portion 34 may be a via hole penetrating through the insulating top plate 32, and if the fifth relief portion 34 is provided at an edge portion of the insulating top plate 32, the fifth relief portion 34 may also be a notch penetrating through the insulating top plate 32; the fifth escape portion 34 is used for escaping the explosion-proof valve 16, and the fifth escape portion 34 is arranged opposite to the explosion-proof valve 16, so that the explosion-proof valve 16 is exposed through the fifth escape portion 34. After the battery cell 17 is out of control due to heat, the explosion-proof valve 16 on the battery shell 1a can be broken by high-temperature gas, sparks and high-temperature solid particles and sprayed out of the explosion-proof valve 16; avoid insulating roof 32 to the sheltering from of high-temperature gas, mars and high temperature solid particle thing, and be unfavorable for the discharge, lead to the cell to take place to swell and influence adjacent cell.

The insulating top plate 32 can be further provided with a sixth avoiding portion 35, the sixth avoiding portion 35 can be provided as a via hole penetrating through the insulating top plate 32, and if the sixth avoiding portion 35 is provided at the edge portion of the insulating top plate 32, the sixth avoiding portion 35 can also be provided as a notch penetrating through the insulating top plate 32; the sixth avoidance portion 35 is used for avoiding the sign portion 131, and the sixth avoidance portion 35 is arranged opposite to the sign portion 131, so that the sign portion 131 is exposed through the sixth avoidance portion 35. When the single batteries are mounted to form a battery module or a battery pack, a worker may directly scan the identification part 131 to obtain information about the single batteries.

However, since the mark part 131 is exposed, the mark part 131 may be shielded by the dust collected after a long time storage, and the mark part 131 may not be used normally; although the dust can be removed by wiping, the dust on the edge of the indicator 131 (i.e., the corner formed by the sixth escape portion 35 and the indicator 131) may not be removed by wiping due to the height difference between the insulating top plate 32 and the indicator 131; in addition, when the insulating top plate 32 is mounted with an error or displaced due to vibration, the insulating top plate 32 may block the edge of the indicator 131, and the indicator 131 may not be used normally.

In some example embodiments of the present disclosure, the insulating film 2 may further include a covering portion 23, the covering portion 23 may be disposed on a side of the insulating top plate 32 away from the single battery, the covering portion 23 is disposed opposite to the sixth avoiding portion 35, that is, the covering portion 23 can cover the identification portion 131, the covering portion 23 seals the side of the sixth avoiding portion 35 away from the single battery, so as to prevent dust from falling on the identification portion 131 and shielding the identification portion 131, and although dust may also fall on the covering portion 23, the dust on the covering portion 23 is easy to remove; the cover 23 may be adhered to the side of the insulating top plate 32 facing away from the unit cells by a glue layer. The cover 23 may be a transparent film, and when the unit cells are mounted to form a battery module or a battery pack, a worker may wipe off dust on the cover 23 and then directly scan the identification part 131 to obtain information about the unit cells.

In addition, in some other exemplary embodiments of the present disclosure, the covering part 23 may be provided as an opaque film layer, and when the unit cells are mounted to form a battery module or a battery pack, a worker may directly remove the covering part 23 and then directly scan the identification part 131 to obtain information about the unit cells.

In other example embodiments of the present disclosure, the insulating film 2 may integrally cover at least a portion of the identifier 131 and at least a portion of the battery body 1, the integral covering means that the foldable portion 22 of the insulating film 2 covering the identifier 131 and the body portion 21 of the battery body 1 are connected, the insulating film 2 may cover both the identifier 131 and the battery body 1, or may cover the identifier 131 and the battery body 1 separately.

As shown in fig. 1 to 5, the insulating top plate 32 and the insulating bottom plate 31 may not be provided, but the insulating film 2 may be provided on the side of the top surface 13 facing away from the battery cell 17 and the insulating film 2 may be provided on the side of the bottom surface 14 facing away from the battery cell 17, that is, the body portion 21 of the insulating film 2 covers not only the two first side surfaces 11 and the two second side surfaces 12 of the battery case 1a, but also the top surface 13 and the bottom surface 14 of the battery case 1 a. Of course, in some example embodiments of the present disclosure, the body portion 21 of the insulating film 2 may cover a portion of the battery body, for example, may not cover the bottom surface 14.

Two second avoiding portions 212 may be disposed on the main body portion 21, the second avoiding portions 212 may be disposed as through holes penetrating the main body portion 21, and if the second avoiding portions 212 are disposed on the edge portion of the main body portion 21, the second avoiding portions 212 may also be disposed as notches penetrating the main body portion 21; the second avoidance part 212 is used for avoiding the battery pole 15, the second avoidance part 212 is arranged opposite to the battery pole 15, namely the positive pole and the negative pole can correspondingly extend out through the two second avoidance parts 212 one by one, and connection of the positive pole and the negative pole with a bus bar is facilitated.

The main body 21 may further be provided with a third avoiding portion 213, the third avoiding portion 213 may be a through hole penetrating through the main body 21, and if the third avoiding portion 213 is provided at the edge of the main body 21, the third avoiding portion 213 may also be a notch penetrating through the main body 21; the third avoiding portion 213 is disposed opposite to the explosion-proof valve 16, and the third avoiding portion 213 is used for avoiding the explosion-proof valve 16, so that the explosion-proof valve 16 is exposed through the third avoiding portion 213. After the battery cell 17 is out of control due to heat, the explosion-proof valve 16 on the battery shell 1a can be broken by high-temperature gas, sparks and high-temperature solid particles and sprayed out of the explosion-proof valve 16; the body part 21 is prevented from shielding high-temperature gas, sparks and high-temperature solid particles, and is not beneficial to discharge, so that the adjacent single battery is influenced due to the fact that the single battery swells. The third escape portion 213 may be a weak portion provided in the main body portion 21, for example, a notch provided in the main body portion 21, or a weak portion formed by the third escape portion 213 being thinner than the other portion.

Referring to fig. 2 and 5, in some example embodiments of the present disclosure, the third escape portion 213 may not be provided on the body portion 21, and after thermal runaway of the battery cell 17 occurs, a part of the body portion 21 opposite to the explosion-proof valve 16 may be melted by high-temperature gas, sparks and high-temperature solid particles, so that the high-temperature gas, sparks and high-temperature solid particles may burst the explosion-proof valve 16 on the battery case 1a and be ejected from the explosion-proof valve 16.

The main body 21 may further be provided with a first avoiding portion 211, the first avoiding portion 211 may be provided as a through hole penetrating through the main body 21, and if the first avoiding portion 211 is provided at the edge of the main body 21, the first avoiding portion 211 may also be provided as a notch penetrating through the main body 21; the first avoiding portion 211 is arranged opposite to the sign portion 131, and the first avoiding portion 211 is used for avoiding the sign portion 131, so that the sign portion 131 is exposed through the first avoiding portion 211.

The shape of the first avoiding portion 211 may be the same as the shape of the mark portion 131, that is, the mark portion 131 is rectangular, and the first avoiding portion 211 is also rectangular; the sign portion 131 is provided in a circular shape, and the first escape portion 211 is also provided in a circular shape. Moreover, the orthographic projection of the first avoiding portion 211 on the top surface 13 covers and is larger than the sign portion 131, so that the sign portion 131 can be completely exposed through the first avoiding portion 211. Of course, the shape of the first avoiding portion 211 may not be the same as the shape of the mark portion 131, for example, the first avoiding portion 211 may be provided in a square shape, and the mark portion 131 may be provided in an inscribed circle of the square shape, or another shape smaller than the inscribed circle. The specific shape thereof will not be described herein.

The insulating film 2 may further include a foldable portion 22, and a part of the edge of the foldable portion 22 is connected to a part of the edge of the first escape portion 211, for example, in the case where the first escape portion 211 is provided in a rectangular shape, one edge of the foldable portion 22 is connected to one edge of the first escape portion 211, and the other three edges of the foldable portion 22 are connected to and not connected to the other three edges of the first escape portion 211, so that the foldable portion 22 can be folded with the above-described connection edge as an axis. In the case where the first escape portion 211 is formed in a circular shape, a part of the edge of the foldable portion 22 is connected to a part of the edge of the first escape portion 211, and the other part of the edge is not connected, so that the foldable portion 22 can be folded around the connecting edge as an axis.

The foldable part 22 can be covered on the identification part 131 in a foldable manner, namely the foldable part 22 is covered on the identification part 131 in an unfolding state, the foldable part 22 can be uncovered from the battery body 1 and folded by a worker, so that the foldable part 22 is in a foldable state, and at the moment, the foldable part 22 is not covered on the identification part 131 and is not covered on the identification part 131.

The foldable part 22 and the main body part 21 may be integrally formed, and a groove may be formed in the insulating film 2 by scribing, laser ablation, or the like, and the groove divides the insulating film 2 into the main body part 21 and the foldable part 22 which are connected to each other. So that the area of the foldable part 22 and the area of the first escape part 211 may be the same, and the shape of the foldable part 22 and the shape of the first escape part 211 may be the same. The structure is simple and the process is simple.

It should be noted that the above are the same, not exactly the same, but have a certain error, which is generated by the groove; the width of the groove is small and therefore negligible, so that the area of the foldable part 22 and the area of the first avoiding part 211 can be the same, and the shape of the foldable part 22 and the shape of the first avoiding part 211 can be the same.

Of course, in other exemplary embodiments of the present disclosure, the foldable part 22 and the main body 21 may be formed separately and then connected into a whole, in which case, the orthographic projection of the foldable part 22 on the reference plane is covered and larger than the orthographic projection of the first avoiding part 211 on the reference plane, and the reference plane is parallel to the plane where the identification part 131 is located; specifically, the area of the foldable portion 22 may be larger than the area of the first avoiding portion 211, and the shape of the foldable portion 22 may be the same as the shape of the first avoiding portion 211, or may be different from the shape of the first avoiding portion 211, as long as the foldable portion 22 can completely cover the first avoiding portion 211, so that the foldable portion 22 can completely cover the identification portion 131.

The above definition of the foldable portion 22 is that the foldable portion 22 is in the unfolded state (i.e., the unfolded state).

Further, as shown in fig. 7, the insulating film 2 may further include a first adhesive layer 41 and a second adhesive layer 42, the first adhesive layer 41 being provided between the foldable portion 22 and the battery body 1, i.e., the foldable portion 22 and the top surface 13 of the battery body 1 are adhered together by the first adhesive layer 41. The second adhesive layer 42 is provided between the body portion 21 and the battery body 1, that is, the body portion 21 and the first side surface 11, the second side surface 12, the bottom surface 14 and the top surface 13 of the battery body 1 are adhered together by the second adhesive layer 42.

The adhesion of the second adhesive layer 42 is stronger than that of the first adhesive layer 41, and the adhesion of the second adhesive layer 42 is stronger, so that the firmness of adhesion between the body part 21 and the first side surface 11, the second side surface 12, the bottom surface 14 and the top surface 13 of the battery body 1 can be ensured, and the body part 21 is prevented from falling off after being used for a long time, and the insulation performance of the single battery is prevented from being influenced.

The first adhesive layer 41 has a weak adhesive property, so that the foldable part 22 can be conveniently uncovered and folded from the battery body 1 by a worker, the mark part 131 is no longer shielded by the foldable part 22, and the worker can scan the mark part 131 to obtain the relevant information of the single battery. If the first adhesive layer 41 has strong adhesiveness, it is difficult for the worker to peel the foldable part 22 from the battery body 1, and if the foldable part 22 is peeled off rigidly, the foldable part 22 and the body part 21 may be damaged.

Of course, in other exemplary embodiments of the present disclosure, the adhesion of the second adhesive layer 42 may be substantially the same as the adhesion of the first adhesive layer 41, i.e., the same glue material may be used for the second adhesive layer 42 and the first adhesive layer 41. In this case, the peeled portion 5 may be provided on the side of the first adhesive layer 41 close to the battery body 1, and the foldable portion 22 and the battery body 1 cannot be adhered together due to the presence of the peeled portion 5. During the storage process of the single battery, the foldable part 22 can cover the identification part 131, so that dust is prevented from being accumulated on the identification part 131; when the single battery is mounted to form a battery module or a battery pack, a worker can easily open and fold the foldable part 22 to expose the identification part 131, and then directly scan the identification part 131 to obtain the information related to the single battery. After the installation of the unit cells is completed, the peeling portion 5 may be peeled off, and then the foldable portion 22 is bonded to the battery body 1 through the first adhesive layer 41.

The peeling part 5 may be a release film which has no tackiness, or slight tackiness after being exposed to a specific material under a limited condition.

In addition, the peeling part 5 may protrude from the foldable part 22, that is, a part of the peeling part 5 and the foldable part 22 are adhered by the first adhesive layer 41, and another part of the peeling part 5 protrudes from the foldable part 22, so that the worker can easily peel the peeling part 5.

Based on the same inventive concept, the disclosed exemplary embodiments provide a battery device, which may include any of the single batteries described above, and the specific structure of the single battery has been described in detail above, and therefore, the detailed description is omitted here.

The battery device can be a battery module or a battery pack.

According to the battery device disclosed by the disclosure, on one hand, the identification part 131 is arranged on the battery body 1, when the single batteries are installed to form a battery module or a battery pack, a worker can obtain the relevant information of the single batteries through the identification part 131 to provide support for subsequent installation, and meanwhile, the batteries can be traced after the subsequent battery repair; on the other hand, the insulating film 2 covers the identification part 131, and the insulating film 2 can protect the identification part 131 and avoid the damage of the identification part 131, so that the normal use of the identification part 131 is ensured; on the other hand, even if the single battery is stored for a long time, the mark part 131 is shielded by dust falling on the insulating film 2, the dust on the insulating film 2 can be easily removed, and the normal use of the mark part 131 is ensured; in summary, the mark part 131 can be protected by covering the mark part 131 with the insulating film 2, and the worker can obtain the related information of the single batteries and install the single batteries, so that the performances of the single batteries in one battery device are kept consistent as much as possible, and the overall performance and the service life of the battery device are ensured.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice in the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

Claims (13)

1. A cell, comprising:

a battery body provided with an identification part;

an insulating film integrally covering at least a part of the identification part and at least a part of the battery body to protect the identification part.

2. The cell defined in claim 1, wherein the insulating film comprises:

the body part is wrapped outside the battery body, a first avoidance part is arranged on the body part, and the first avoidance part is arranged opposite to the identification part so as to expose the identification part;

and a part of the edge of the foldable part is connected with a part of the edge of the first avoiding part, and the foldable part is covered on the identification part in a foldable manner.

3. The cell defined in claim 2, wherein the insulating film is a non-transparent insulating film.

4. The single battery according to claim 2, wherein the area of the foldable portion is the same as the area of the first escape portion, and the shape of the foldable portion is the same as the shape of the first escape portion; or the like, or, alternatively,

the orthographic projection of the foldable part on a reference plane covers and is larger than the orthographic projection of the first avoidance part on the reference plane, and the reference plane is parallel to the plane where the identification part is located.

5. The cell defined in claim 2, wherein the insulating film further comprises:

the first bonding layer is arranged between the foldable part and the battery body;

and a second adhesive layer provided between the body part and the battery body.

6. The battery cell according to claim 5, wherein the second adhesive layer has stronger adhesion than the first adhesive layer.

7. The cell defined in claim 5, wherein the insulating film further comprises:

and the stripping part is arranged on one side of the first bonding layer close to the battery body.

8. The cell defined in any one of claims 2-7, wherein the battery body comprises:

a battery case provided with a through hole;

the battery core is arranged in the battery shell;

the battery pole is connected to the battery core and extends out of the battery shell from the through hole;

the body part is provided with a second avoiding part, and the battery pole column extends out through the second avoiding part.

9. The cell defined in any one of claims 2-7, wherein the battery body comprises:

a battery case on which an explosion-proof valve is provided;

the body part is provided with a third avoiding part, and the third avoiding part is arranged opposite to the explosion-proof valve.

10. The single battery according to claim 9, wherein the third avoiding portion is provided as a through hole or a weak portion.

11. The cell defined in claim 1, wherein the insulating film is a transparent film layer.

12. The battery cell according to claim 1, wherein the identification portion is a two-dimensional code and/or a bar code.

13. A battery device, comprising: the cell according to any one of claims 1 to 12.

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