CN219286539U - Battery and battery device - Google Patents

Abstract

The utility model relates to the technical field of batteries and discloses a battery and a battery device; the battery comprises a battery shell, an electric core and a battery pole; the battery shell is provided with a concave part, and a first through hole penetrating through the battery shell is arranged in the concave part; the battery core is arranged in the battery shell; the battery post penetrates through the first through hole and is connected to the battery shell in an insulating mode, at least part of the battery post is located in the concave portion, a liquid injection hole is formed in the battery post and is opposite to the battery cell, and the liquid injection hole is communicated to the inside of the battery shell. The battery is not easy to have poor short circuit.

Description

Battery and battery device

Technical Field

The disclosure relates to the technical field of batteries, and in particular relates to a battery and a battery device comprising the battery.

Background

Currently, new energy electric vehicles are increasingly receiving social attention, and have become the development direction of future automobiles. The battery is an important component in the electric automobile, and the design optimization of the battery becomes an important item for the development of the electric automobile.

However, the conventional battery is susceptible to short-circuiting.

It should be noted that the information disclosed in the above background section is only for enhancing 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.

Disclosure of Invention

The present disclosure is directed to overcoming the shortages of the related art, and providing a battery with less short circuit and a battery device including the battery.

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

the battery comprises a battery shell, wherein a concave part is arranged on the battery shell, and a first through hole penetrating through the battery shell is arranged in the concave part;

the battery cell is arranged in the battery shell;

the battery post penetrates through the first through hole and is connected with the battery shell in an insulating mode, at least part of the battery post is located in the concave portion, a liquid injection hole is formed in the battery post and is opposite to the battery core, and the liquid injection hole is communicated with the inside of the battery shell.

The battery of this disclosure is provided with the depressed part on the battery housing, and at least part battery post is located the depressed part, is provided with the notes liquid hole on the battery post to make at least part notes liquid hole in the depressed part, make the distance between notes liquid hole and the electric core less, thereby carry out the in-process of annotating the liquid to the battery through annotating the liquid hole, the gravitational potential energy of electrolyte is less, and the gravitational potential energy of electrolyte can not cause the damage to the electric core, and then avoids the bad emergence of short circuit, guarantees the performance requirement of battery.

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

The battery device of the disclosure is provided with the depressed part on the battery shell, at least part of the battery post is positioned in the depressed part, and the liquid injection hole is formed in the battery post, so that at least part of the liquid injection hole is positioned in the depressed part, the distance between the liquid injection hole and the battery cell is smaller, the gravitational potential energy of electrolyte is smaller in the process of injecting the liquid into the battery through the liquid injection hole, the gravitational potential energy of the electrolyte cannot damage the battery cell, and further the occurrence of poor short circuit is avoided, and the performance requirements of the battery and the battery device are ensured.

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 disclosure and together with the description, serve to explain the principles of the disclosure. It will be apparent to those of ordinary skill in the art that the drawings in the following description are merely examples of the disclosure and that other drawings may be derived from them without undue effort.

Fig. 1 is a schematic structural view of an example embodiment of a battery of the present disclosure.

Fig. 2 is an enlarged partial view of the portion indicated by N in fig. 1.

Fig. 3 is a schematic view of the battery case of fig. 1 according to an exemplary embodiment.

Fig. 4 is a schematic structural view of another example embodiment of a battery case.

Fig. 5 is a schematic structural view of an exemplary embodiment of the battery post of fig. 1.

Fig. 6 is a schematic structural view of another example embodiment of a battery post.

Reference numerals illustrate:

1. a battery case; 11. a recessed portion; 12. an accommodation space; 13. a first through hole; 14. a first end face; 141. a main body portion; 1411. a second through hole; 142. a sidewall; 143. a bottom wall; 15. a second end face; 16. a side surface;

2. a battery cell;

3. a battery post; 31. a liquid injection hole; 32. a groove; 33. a pole body; 34. a first turnover part; 35. a second turnover part;

4. a current collector; 41. a third through hole;

51. a positive electrode tab; 52. a negative electrode ear;

6. a first insulating member; 61. a first insulating plate; 62. a first insulating cylinder;

7. a second insulating member;

z, third direction.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be embodied in many 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 the example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus detailed descriptions thereof 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" are used in this specification to describe the relative relationship of one component of an icon to another component, these terms are used in this specification for convenience only, such as in terms of the orientation of the examples described in the figures. It will be appreciated that if the device of the icon is flipped upside down, the recited "up" component will become the "down" component. 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 through another structure.

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

In the present application, unless explicitly specified and limited otherwise, the term "coupled" is to be construed broadly, and for example, "coupled" may be either fixedly coupled, detachably coupled, or integrally formed; can be directly connected or indirectly connected through an intermediate medium. "and/or" is merely an association relationship describing an association object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

The exemplary embodiments of the present disclosure provide a battery, which, referring to fig. 1-6, may include a battery case 1, a battery cell 2, and a battery post 3; the battery shell 1 is provided with a concave part 11, and a first through hole 13 penetrating through the battery shell 1 is arranged in the concave part 11; the battery cell 2 is arranged in the battery shell 1; the battery post 3 runs through the first through hole 13 and is connected with the battery shell 1 in an insulating way, at least part of the battery post 3 is positioned in the concave part 11, the battery post 3 is provided with a liquid injection hole 31, the liquid injection hole 31 and the battery core 2 are oppositely arranged, and the liquid injection hole 31 is communicated to the inside of the battery shell 1.

In the present exemplary embodiment, referring to fig. 1, the battery may be a cylindrical battery, and thus, the battery case 1 may be provided in a cylindrical shape, that is, the battery case 1 may include a first end surface 14 and a second end surface 15 that are provided opposite to each other, each of the first end surface 14 and the second end surface 15 is provided in a circular shape, a side surface 16 is connected between the first end surface 14 and the second end surface 15, and the side surface 16 is provided in a cylindrical shape. The side face 16, the first end face 14 and the second end face 15 surround the accommodation space 12 forming a battery. A first through hole 13 may be provided on the first end surface 14, and the first through hole 13 may be provided as a circular through hole.

Of course, in other example embodiments of the present disclosure, the second end surface 15 and the first end surface 14 may be provided in a rectangular shape, an elliptical shape, a trapezoidal shape, or the like, the side surface 16 may be provided in one or more, and the rectangular shape, the elliptical shape, the trapezoidal shape, or the like is formed around, so that the battery case 1 is formed in a rectangular shape, an elliptical cylindrical shape, a prismatic shape, or the like. The battery case 1 may have other shapes, and will not be described in detail herein. And the first through holes 13 may be provided as rectangular through holes, oval through holes, or the like.

In the present exemplary embodiment, as shown with reference to fig. 1 and 2, the battery cell 2 is provided in the accommodation space 12 of the battery case 1, and the battery cell 2 is provided as a cylinder fitted to the battery case 1. The battery cell 2 may include a battery cell body, which may include a positive electrode tab and a negative electrode tab (not shown in the drawings), and a separator disposed between the positive electrode tab and the negative electrode tab.

The battery cell 2 may further include a tab, which may include a positive tab 51 and a negative tab 52. The electrode lugs are led out from at least one end of the battery cell main body, and one end of the battery cell main body refers to two axial end parts of the battery cell main body; the positive tab 51 is connected to the battery core main body, specifically, the positive tab 51 is connected to the positive plate; the positive tab 51 is located on a side of the cell body close to the first end face 14, that is, the positive tab 51 is located on a side of the cell body close to the battery post 3. The negative electrode tab 52 is connected to the cell body, specifically, the negative electrode tab 52 is connected to the negative electrode sheet; the negative electrode tab 52 and the positive electrode tab 51 are located on the same side of the cell body, that is, the negative electrode tab 52 is located on the side of the cell body close to the first end face 14, that is, the negative electrode tab 52 is located on the side of the cell body close to the battery post 3. Of course, the positive tab 51 and the negative tab 52 may be located on opposite sides of the cell body.

A battery pole 3 is arranged on one side of the battery core 2, which is close to the first end face 14, and the positive lug 51 is connected with the battery pole 3; the battery post 3 protrudes from the battery case 1 through the first through hole 13 on the first end face 14 to form the positive electrode of the battery. And negative electrode tab 52 may be connected to battery case 1, battery case 1 forming the negative electrode of the battery. The positive electrode and the negative electrode of the battery thus arranged are led out from the same side. Of course, the battery post 3 may be the negative electrode of the battery, and the battery case 1 may be the positive electrode of the battery.

And the battery post 3 is connected to the battery case 1, specifically, the battery post 3 is connected to the first end face 14. The battery post 3 is provided with a liquid injection hole 31, and the liquid injection hole 31 is communicated with the accommodating space 12 of the battery case 1, and electrolyte can be injected through the liquid injection hole 31. However, since the battery post 3 protrudes from the battery case 1, the distance between the liquid injection hole 31 and the battery cell 2 is large, and in the process of injecting the electrolyte into the battery, the gravitational potential energy of the electrolyte is large, the liquid injection hole 31 is arranged opposite to the tab, the liquid injection hole 31 is arranged opposite to the positive tab 51, or the liquid injection hole 31 is arranged opposite to the negative tab 52, or the liquid injection hole 31 is arranged opposite to both the positive tab 51 and the negative tab 52; the impact force of the electrolyte on the positive electrode lug 51 and the negative electrode lug 52 is larger, so that the positive electrode lug 51 and the negative electrode lug 52 are easy to deform and are connected under the action of the larger impact force to cause short circuit. In the case where the positive tab 51 and the negative tab 52 are located on opposite sides of the battery cell 2, the electrolyte impacts the positive tab 51 or the negative tab 52 close to the battery post 3, so that the positive tab 51 or the negative tab 52 is deformed, the positive tab 51 is easily shorted with the negative tab, and the negative tab 52 is easily shorted with the positive tab. Therefore, the main reason why the battery is vulnerable to short-circuiting is that: the battery post 3 has a high height, and when the electrolyte is injected, the electrolyte impacts the positive tab 51 and/or the negative tab 52, and the positive tab 51 and the negative tab 52 are connected to each other to cause a short circuit.

In order to solve the above-described technical problem, the recess 11 is provided at one end surface of the battery case 1, and the recess 11 may be provided at the first end surface 14.

Referring to fig. 3 and 4, the first end surface 14 may include a body portion 141, and the body portion 141 is provided as an annular connection plate; the recess 11 may include a side wall 142 and a bottom wall 143, the side wall 142 of the recess 11 being provided as an annular web, and the bottom wall 143 of the recess 11 being provided as an annular web.

The main body 141 is provided with a second through hole 1411; the outer periphery of the body 141 is connected to the side surface 16. The side wall 142 is connected to the wall of the second through hole 1411, and the height of the side wall 142 in the third direction decreases with decreasing distance from the central axis of the second through hole 1411 on the first surface, i.e., the side wall 142 is inclined toward the accommodating space 12 side; the first surface is perpendicular to the central axis of the second through hole 1411, and the third direction is perpendicular to the first surface, i.e., the third direction is parallel to the central axis of the second through hole 1411. Referring to fig. 3, the side wall 142 may be provided as a curved plate, i.e., a portion of the side wall 142 near the body portion 141 may be a curved plate, and a portion of the side wall 142 near the bottom wall 143 may be a curved plate. As shown in fig. 4, the upper and lower wall surfaces of the side wall 142 may be inclined surfaces.

In addition, the first end face 14 and the side face 16 are of an integral structure, that is, the first end face 14 and the side face 16 are integrally formed; the battery case is made of steel, for example, SPCC (cold rolled carbon steel sheet and steel strip) grade carbon steel, the deformation of the material is relatively poor, the deformation is difficult to bend by more than 90 degrees, the surface of the carbon steel can be coated with a rust-proof layer, and the rust-proof layer can be damaged due to overlarge bending in the stamping forming process. Therefore, the angle between the side wall 142 and the end face is not less than 90 °, i.e., the angle between the side wall 142 and the main body 141 is greater than 90 °. The included angle α between the side wall 142 and the main body 141 is greater than or equal to 95 degrees and less than or equal to 175 degrees, for example, the included angle α may be 98 degrees, 100 degrees, 102 degrees, 106 degrees, 110.5 degrees, 113 degrees, 118 degrees, 125 degrees, 138 degrees, 142 degrees, 147 degrees, 158 degrees, 169 degrees, 170 degrees, 172.8 degrees, 174.5 degrees, and so on.

The bottom wall 143 is connected to the inner circumferential surface of the side wall 142, and the bottom wall 143 and the side wall 142 form the recess 11. The second through-hole 1411 may be provided in a circular shape, the side wall 142 may be provided in a circular ring, and the bottom wall 143 may be provided in a circular ring. Of course, the second through holes 1411 may be provided in a rectangular shape, the side walls 142 may be provided in a rectangular ring, and the bottom wall 143 may be provided in a rectangular ring. Of course, other shapes are also possible and are not described in detail herein.

The first through hole 13 is provided in the recess 11, i.e. the first through hole 13 penetrates the bottom wall 143 of the recess 11. The battery post 3 extends out of the battery housing 1 through the first through hole 13 on the first end face 14 to form the positive electrode of the battery, so that at least part of the battery post 3 is located in the concave portion 11, and the height of the battery post 3 is reduced, so that the distance between the battery post 3 and the positive electrode tab 51 and the negative electrode tab 52 is shortened, and further, the distance between the liquid injection hole 31 and the positive electrode tab 51 and the negative electrode tab 52 is shortened. Specifically, the distance between the end of the electrolyte injection hole 31 near the cell 2 and the side of the cell 2 near the electrolyte injection hole 31 is 0.5mm or more and 5mm or less, for example, the distance between the end of the electrolyte injection hole 31 near the cell 2 and the side of the cell 2 near the electrolyte injection hole 31 may be 0.8mm, 1.0mm, 1.2mm, 1.45mm, 1.8mm, 2mm, 2.5mm, 2.8mm, 3.2mm, 3.45mm, 3.8mm, 4mm, 4.25mm, 4.6mm, or the like. Therefore, in the process of filling the battery with the electrolyte, the gravitational potential energy of the electrolyte is small, the impact force on the positive electrode lug 51 and the negative electrode lug 52 is reduced, the gravitational potential energy of the electrolyte cannot damage the positive electrode lug 51 and the negative electrode lug 52, the positive electrode lug 51 and the negative electrode lug 52 cannot deform, and poor short circuit between the positive electrode lug 51 and the negative electrode lug 52 is avoided. Moreover, if the distance between the end of the electrolyte injection hole 31 near the battery cell 2 and the side of the battery cell 2 near the electrolyte injection hole 31 is too small, the electrolyte cannot uniformly infiltrate the battery cell 2, resulting in poor electrical performance of the battery. The distance can ensure that the electrolyte uniformly infiltrates the battery cell 2.

In some example embodiments of the present disclosure, referring to fig. 1, 2 and 5, a groove 32 may be provided on the battery post 3, and the groove 32 may be provided in a shape adapted to the battery post 3; for example, the battery post 3 may be provided in a cylindrical shape, and the recess 32 may be provided in a cylindrical shape; the battery post 3 may be provided in a prismatic shape, and the recess 32 may be provided in a prismatic shape so as to maintain uniformity in thickness of the peripheral side wall of the battery post 3, thereby maintaining uniformity in electrical performance. The liquid injection hole 31 penetrates through the bottom wall of the groove 32, namely the liquid injection hole 31 is arranged on the bottom wall of the groove 32, and the area of the cross section of the liquid injection hole 31 is smaller than that of the bottom wall of the groove 32; by the arrangement, the drop height of the electrolyte is further reduced, the impact force of the electrolyte on the positive electrode lug 51 and the negative electrode lug 52 is further reduced, the gravitational potential energy of the electrolyte is ensured not to damage the positive electrode lug 51 and the negative electrode lug 52, the positive electrode lug 51 and the negative electrode lug 52 are not deformed, and poor short circuit between the positive electrode lug 51 and the negative electrode lug 52 is avoided.

Further, referring to fig. 6, the height of the bottom wall of the groove 32 in the third direction Z decreases as the distance from the central axis of the pouring orifice 31 on the first surface is decreased, the first surface is perpendicular to the central axis of the pouring orifice 31, and the third direction Z is perpendicular to the first surface, that is, the third direction Z is parallel to the central axis of the pouring orifice 31. Namely, the bottom wall of the groove 32 is provided with an inclined surface, and the height of the groove bottom wall of the liquid injection hole 31 is smaller as the groove bottom wall is closer to the bottom wall, so that on one hand, the electrolyte can smoothly flow into the liquid injection hole 31; on the other hand, the electrolyte flowing to the bottom wall of the tank can flow into the liquid injection hole 31 entirely, and then is injected into the battery shell 1 through the liquid injection hole 31, so that the electrolyte cannot be remained on the bottom wall of the tank, and the waste of the electrolyte is avoided.

In the present exemplary embodiment, referring to fig. 5 and 6, the battery post 3 may include a post body 33, a first turnover 34, and a second turnover 35. The pole body 33 penetrates through the first through hole 13, and the pole body 33 is arranged in a shape matched with the first through hole 13; for example, the first through hole 13 is provided as a circular through hole, and the post body 33 is provided as a cylindrical shape; the first through hole 13 is provided as a rectangular through hole, and the post body 33 is provided as a quadrangular prism. Of course, the pole body 33 may have other shapes, which are not described in detail herein.

The first turnover part 34 is connected to the pole body 33, and the first turnover part 34 extends to a side away from the center of the pole body 33. The second turnover part 35 is connected to the pole body 33, the second turnover part 35 also extends to a side far from the center of the pole body 33, and a first gap is provided between the second turnover part 35 and the first turnover part 34. The first turnover part 34 is located at one side of the first end surface 14 close to the battery cell 2, the second turnover part 35 is located at one side of the first end surface 14 away from the battery cell 2, so that the first end surface 14 is located in the first gap, and the first turnover part 34 and the second turnover part 35 are connected with the first end surface 14.

In the present exemplary embodiment, referring to fig. 1 and 2, the battery may further include a first insulating member 6, the first insulating member 6 being disposed between the battery post 3 and the first end face 14, specifically, the first insulating member 6 being disposed between the first turnover 34 and the first end face 14.

Specifically, the first insulating member 6 may include a first insulating plate 61 and a first insulating cylinder 62; the first insulating plate 61 is provided in a ring shape, that is, a through hole through which the post body 33 can pass is provided on the first insulating plate 61. The inner annular surface of the first insulating plate 61 is provided in a shape adapted to the pole body 33, for example, in the case where the pole body 33 is provided in a cylindrical shape, the inner annular surface of the first insulating plate 61 is provided in a circular shape, and in the case where the pole body 33 is provided in a prismatic shape, the inner annular surface of the first insulating plate 61 is provided in a polygonal shape; the outer circumferential surface of the first insulating plate 61 is set to a shape that is compatible with the recess 11, for example, in the case where the recess 11 is set to a cylindrical shape, the outer circumferential surface of the first insulating plate 61 is set to a circular shape, and in the case where the recess 11 is set to a prismatic shape, the outer circumferential surface of the first insulating plate 61 is set to a polygonal shape. The first insulating plate 61 is disposed between the first turndown 34 and the first end surface 14, and the first insulating plate 61 can insulate a surface of the first turndown 34 adjacent to the first end surface 14 from a surface of the first end surface 14 adjacent to the first turndown 34.

The first insulating cylinder 62 is connected to the first insulating plate 61, specifically, the first insulating cylinder 62 is connected to a side of the first insulating plate 61 facing away from the post body 33. The inner cylindrical surface of the first insulating cylinder 62 is provided in a shape that is adapted to the outer annular surface of the first turndown 34, for example, in the case where the outer annular surface of the first turndown 34 is provided in a cylindrical shape, the inner cylindrical surface of the first insulating cylinder 62 is provided in a cylindrical shape; in the case where the outer annular surface of the first folded portion 34 is provided as a polygon, the inner annular surface of the first insulating cylinder 62 is provided as a polygon tubular shape. The outer cylindrical surface of the first insulating cylinder 62 is provided in a shape that is adapted to the recess 11, for example, in the case where the recess 11 is provided in a cylindrical shape, the outer cylindrical surface of the first insulating cylinder 62 is provided in a cylindrical surface; in the case where the recess 11 is provided in a prismatic shape, the outer cylindrical surface of the first insulating cylinder 62 is provided in a polygonal cylindrical shape.

The first insulating cylinder 62 is located between the outer annular surface of the first turnover part 34 and the inner side wall of the recess 11, and the outer annular surface of the first turnover part 34 and the inner side wall of the recess 11 can be insulated and isolated by the first insulating cylinder 62.

In the present exemplary embodiment, as shown with reference to fig. 1 and 2, the battery may further include a second insulating member 7, the second insulating member 7 being disposed between the battery post 3 and the first end face 14, specifically, the second insulating member 7 being disposed between the second turnover 35 and the first end face 14.

Specifically, the second insulator 7 may be provided in a ring shape, that is, a through hole is provided in the second insulator 7, through which the post body 33 may pass. The second insulating element 7 can insulate the side of the second fold 35 adjacent to the first end 14 from the side of the first end 14 adjacent to the second fold 35.

In the present exemplary embodiment, as shown with reference to fig. 1 and 2, the battery may further include a current collector 4, and the current collector 4 is provided in a plate shape. The current collector 4 is disposed in the battery case 1, and the current collector 4 is disposed on a side of the battery post 3 adjacent to the battery core 2, specifically, the current collector 4 is disposed between the battery post 3 and the positive tab 51, and the current collector 4 is connected between the battery post 3 and the positive tab 51. The third through hole 41 is disposed on the current collector 4, and the third through hole 41 is disposed opposite to the liquid injection hole 31, for example, the third through hole 41 may be disposed opposite to the liquid injection hole 31, that is, the third through hole 41 may be disposed coaxially with the liquid injection hole 31; so that the electrolyte injected from the injection hole 31 can flow to the cell 2 through the third through hole 41 to infiltrate the cell 2. Of course, the third through-hole 41 may be disposed not coaxially with the pouring spout 31, i.e., the third through-hole 41 may be disposed eccentrically with the pouring spout 31.

Further, the orthographic projection of the injection hole 31 on the current collector 4 is located within the third through hole 41, for example, the edge of the orthographic projection of the injection hole 31 on the current collector 4 coincides with the edge line of the third through hole 41 along the line, or the third through hole 41 covers the orthographic projection of the injection hole 31 on the current collector 4, and the area of the third through hole 41 is larger than the orthographic projection of the injection hole 31 on the current collector 4; so that the electrolyte injected from the injection hole 31 can pass through the third through hole 41 more smoothly without blocking the electrolyte by the current collector 4.

Specifically, for example, the third through holes 41 are circular through holes in the same shape as the injection holes 31, and the diameter of the third through holes 41 is larger than or equal to the diameter of the injection holes 31. Alternatively, the third through-holes 41 are rectangular through-holes in the same shape as the injection holes 31, the length of the third through-holes 41 is greater than or equal to the length of the injection holes 31, and the width of the third through-holes 41 is greater than or equal to the width of the injection holes 31. Also, the shape of the third through hole 41 may be different from the shape of the liquid injection hole 31, the shape of the third through hole 41 is a circular through hole, the shape of the liquid injection hole 31 is a square through hole, and the diameter of the third through hole 41 is greater than or equal to the diameter of the circumscribed circle of the liquid injection hole 31; alternatively, the third through hole 41 is a rectangular through hole, the liquid injection hole 31 is a circular through hole, and the diameter of the liquid injection hole 31 is smaller than or equal to the diameter of the inscribed circle of the third through hole 41. Of course, the shapes of the third through hole 41 and the injection hole 31 may be various other shapes, and will not be described in detail herein.

In this example embodiment, the battery post 3 and the battery case 1 are disposed on the same center axis, and the liquid injection hole 31 and the battery post 3 are disposed on the same center axis, so that the liquid injection hole 31 and the battery case 1 are disposed on the same center axis, the liquid injection hole 31 and the battery core 2 are also disposed on the same center axis, and the electrolyte injected through the liquid injection hole 31 can uniformly flow to one surface of the battery core 2 close to the battery post 3, so that the infiltration of the battery core 2 is relatively uniform, and the electrical performance of the battery is ensured.

Based on the same inventive concept, the exemplary embodiments of the present disclosure provide a battery device, which may include the battery described in any one of the above, and the specific structure of the battery has been described in detail above, so that the description thereof is omitted herein.

It should be noted that, the battery device includes other necessary components and compositions besides the battery, such as a battery box, a circuit board, a control component, and the like, and those skilled in the art can correspondingly supplement the components and the components according to the specific use requirements of the battery device, which is not described herein.

The battery and the battery device of this disclosure are provided with the depressed part 11 on battery case 1, and at least part battery post 3 is located the depressed part 11, is provided with annotate liquid hole 31 on the battery post 3 to make at least part annotate liquid hole 31 be located the depressed part 11, make annotate the distance between liquid hole 31 and the electric core 2 less, thereby carry out the in-process of annotating the liquid to the battery through annotating liquid hole 31, the gravitational potential energy of electrolyte is less, the gravitational potential energy of electrolyte can not cause the damage to electric core 2, and then avoids the bad emergence of short circuit, guarantees the performance requirement of battery and battery device.

The references to "parallel", "perpendicular" in this application are not entirely parallel, perpendicular, but rather are to some degree of error; for example, the included angle between the two is greater than or equal to 0 ° and less than or equal to 5 °, i.e. the two are considered to be parallel to each other; the included angle between the two is more than or equal to 85 degrees and less than or equal to 95 degrees, namely the two are considered to be mutually perpendicular.

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 adaptations, 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 within 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 (11)

1. A battery, comprising:

the battery comprises a battery shell, wherein a concave part is arranged on the battery shell, and a first through hole penetrating through the battery shell is arranged in the concave part;

the battery cell is arranged in the battery shell;

the battery post penetrates through the first through hole and is connected with the battery shell in an insulating mode, at least part of the battery post is located in the concave portion, a liquid injection hole is formed in the battery post and is opposite to the battery core, and the liquid injection hole is communicated with the inside of the battery shell.

2. The battery of claim 1, wherein the cell comprises:

a cell body;

the electrode lug is led out from at least one end of the battery cell main body, and the liquid injection hole is opposite to the electrode lug.

3. The battery of claim 1, wherein the recess is provided at an end face of the battery case, the recess comprises a side wall and a bottom wall, the side wall connects the bottom wall and the end face, and an angle between the side wall and the end face is equal to or greater than 90 °.

4. The battery of claim 3, wherein the included angle is 95 degrees or greater and 175 degrees or less.

5. The battery according to claim 1, wherein the battery post is provided with a groove, the liquid injection hole penetrates through the groove bottom wall of the groove, and the area of the cross section of the liquid injection hole is smaller than the area of the groove bottom wall of the groove.

6. The battery according to claim 5, wherein a height of a bottom wall of the recess in a third direction, which is perpendicular to the central axis of the liquid injection hole, decreases with a decrease in distance from the central axis of the liquid injection hole on a first face, which is perpendicular to the central axis of the liquid injection hole.

7. The battery of claim 1, wherein the battery further comprises:

the current collector is arranged in the battery shell and is positioned at one side of the battery post, which is close to the battery core, a third through hole is formed in the current collector, the third through hole is opposite to the liquid injection hole, and the orthographic projection of the liquid injection hole on the current collector is positioned in the third through hole.

8. The battery according to claim 1, wherein a distance between an end of the liquid injection hole near the electric core and a face of the electric core near the liquid injection hole is 0.5mm or more and 5mm or less.

9. The battery of claim 1, wherein the battery is a cylindrical battery.

10. The battery of claim 9, wherein the fill hole is concentric with the battery post and the battery post is concentric with the battery housing.

11. A battery device, characterized by comprising: a battery as claimed in any one of claims 1 to 10.

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