CN219717058U - Battery monomer, battery and electric equipment - Google Patents

Abstract

The utility model relates to a battery monomer, a battery and electric equipment. The battery cell includes: a housing having a first end portion and a mounting hole formed in the first end portion; the battery cell assembly is accommodated in the shell; the pole is penetrated through the mounting hole, insulated from the shell and electrically connected with the battery cell assembly; one end of the pole column, which is positioned in the shell, is provided with an abutting part, and one end of the pole column, which is positioned outside the shell, is provided with a riveting part; the first insulating piece is sleeved outside the pole and is positioned between the battery core component and the first end part; the abutting part is matched with one side of the first insulating piece, which faces the battery cell assembly, in a stop way, and the riveting part is riveted with the outer side of the first end part; the first insulating piece is provided with a first blocking surface, and the first blocking surface is arranged at an included angle with a preset plane perpendicular to the axis of the mounting hole; the abutting portion has a second blocking surface capable of being attached to the first blocking surface.

Description

Battery monomer, battery and electric equipment

Technical Field

The utility model relates to the technical field of batteries, in particular to a battery monomer, a battery and electric equipment.

Background

Batteries are widely used in various devices such as cellular phones, notebook computers, battery cars, electric vehicles, electric airplanes, electric ships, electric toy vehicles, electric toy ships, electric toy airplanes, electric tools, and the like. The battery cell is an important component of the battery, the battery cell assembly is arranged in the shell, and the lug and the pole of the battery cell assembly are electrically connected through the current collecting disc, so that the pole is used as one electrode of the battery cell. In order to achieve insulation of the collector plate from the housing, an insulation member needs to be provided between the collector plate and the housing.

However, the pole is typically fixedly mounted to the housing by riveting. Since the insulating member is generally a plastic member, deformation is easily generated. When the pole is riveted, the pole can generate larger pressure on the insulating part, so that the insulating part is easy to generate larger buckling deformation, and the electric core assembly is prevented from entering the shell to cause adverse effects.

Disclosure of Invention

Based on this, it is necessary to provide a battery cell, a battery and electric equipment for improving the above-mentioned defects, which are necessary to solve the problem that the prior art has a problem that the battery cell assembly is in the housing to cause adverse effect because the pole will generate a larger pressure to the insulator when riveting the pole, which easily causes a larger buckling deformation of the insulator.

A battery cell comprising:

a housing having a first end portion and a mounting hole formed in the first end portion;

the battery cell assembly is accommodated in the shell;

the pole is penetrated through the mounting hole, insulated from the shell and electrically connected with the battery cell assembly; one end of the pole column, which is positioned in the shell, is provided with an abutting part, and one end of the pole column, which is positioned outside the shell, is provided with a riveting part; and

The first insulating piece is sleeved outside the pole and is positioned between the battery cell assembly and the first end part; the abutting part is matched with one side, facing the battery cell assembly, of the first insulating piece in a stop mode, and the riveting part is riveted with the outer side of the first end part;

the first insulating piece is provided with a first blocking surface, and the first blocking surface is distributed at an included angle with a preset plane perpendicular to the axis of the mounting hole; the abutting portion has a second blocking surface capable of being attached to the first blocking surface.

In one embodiment, the battery cell further includes an elastic sealing ring sleeved outside the pole and located between the abutting portion and the first end portion.

In one embodiment, the stiffness of the post is greater than the stiffness of the first insulator.

In one embodiment, the first insulating member has a first through hole and an abutting matching surface, the first insulating member is sleeved outside the pole through the first through hole, the abutting matching surface is distributed around the first through hole, and one side of the abutting part facing the riveting part abuts against the abutting matching surface; the first blocking surface and the abutting matching surface are distributed in an included angle.

In one embodiment, the abutting mating surface is perpendicular to the axis of the mounting hole, and the first blocking surface is a cylindrical surface arranged around the abutting mating surface and is parallel to the axis of the mounting hole.

In one embodiment, the first insulator comprises a first annular region disposed around the first through hole and a second annular region disposed around the first annular region;

the first annular region protrudes outwards from a side away from the first end part to a side close to the first end part so as to form an annular groove on a side of the first annular region away from the first end part and form an annular bulge on a side close to the first end part; the bottom surface of the annular groove is the abutting matching surface, and the side surface of the annular groove is the first blocking surface.

In one embodiment, the second annular region has a reinforcing rib on a side facing the first end, and the reinforcing rib and the annular projection are both abutted against the first end.

In one embodiment, the battery unit further comprises a conductive block and a second insulating member, the conductive block is sleeved outside the pole, is located outside the shell and is riveted with the riveting portion, and the second insulating member is sleeved outside the pole and is located between the conductive block and the first end portion.

A battery comprising a battery cell as described in any one of the embodiments above.

A powered device comprising a battery cell or battery as described in any of the embodiments above.

When the battery monomer, the battery and the electric equipment are assembled, the pole column sequentially penetrates through the first insulating piece and the mounting hole on the first end part from the inner side of the first end part. Then, the end of the pole located outside the first end (i.e. the end penetrating out of the shell from the mounting hole) is mechanically pressurized (such as spin riveting), and during the mechanical pressurization, the outer diameter of the end of the pole located outside the first end is enlarged to form a riveted part, until the riveted part and the outer side of the first end form a riveted structure, at this time, the pole compresses and fixes the first insulating member on the first end of the shell, i.e. the pole, the first insulating member and the first end of the shell are relatively fixed.

So, in the riveting process of the first end part of the pole and the shell, under the pressure action of the abutting part of the pole applied to the first insulating part, the first insulating part has a tendency of buckling deformation, the first blocking surface on the first insulating part and the second blocking surface on the abutting part are tightly attached to each other, so that the second blocking surface on the abutting part blocks the first insulating part to generate buckling deformation, namely, the first insulating part is ensured not to generate buckling deformation, further, adverse effects on the entering of the battery cell assembly are avoided, and the improvement of the assembly quality of the battery cell is facilitated.

Drawings

Fig. 1 is a schematic exploded view of a battery cell according to an embodiment of the present utility model;

fig. 2 is a cross-sectional view of the battery cell shown in fig. 1;

fig. 3 is a cross-sectional view of the battery cell shown in fig. 2 at a terminal post;

fig. 4 is an exploded view of the battery cell shown in fig. 2 at a post.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

In one embodiment of the utility model, a battery is provided that refers to a single physical module that includes one or more battery cells to provide higher voltage and capacity. For example, the battery referred to in the present utility model may include a battery module, a battery pack, or the like. In particular, the battery generally includes a case for enclosing one or more battery cells. The case body can prevent liquid or other foreign matters from affecting the charge or discharge of the battery cells. Specifically, in the battery, the number of the battery cells may be one or more. If the number of the battery cells is multiple, the multiple battery cells can be connected in series or in parallel or in series-parallel connection, and the series-parallel connection means that the multiple battery cells are connected in series or in parallel. The battery modules can be formed by connecting a plurality of battery monomers in series or in parallel or in series-parallel connection, and the battery modules are connected in series or in parallel or in series-parallel connection to form a whole and are accommodated in the box body. Or all the battery cells can be directly connected in series or in parallel or in series-parallel, and then the whole formed by all the battery cells is accommodated in the box body.

It is understood that the battery cell may include a lithium ion secondary battery cell, a lithium ion primary battery cell, a lithium sulfur battery cell, a sodium ion battery cell, or a magnesium ion battery cell, which is not limited in the embodiment of the utility model. The battery cell may be in a cylindrical shape, a flat shape, a rectangular parallelepiped shape, or other shapes, which is not limited in this embodiment of the utility model. The battery cells are generally classified into three types according to the packaging method: the cylindrical battery cell, the square battery cell and the soft package battery cell are not limited in this embodiment.

Referring to fig. 1 to 4, an embodiment of the utility model provides a battery cell including a housing 10, a cell assembly 20, a post 30 and a first insulating member 40. The housing 10 has a first end 11 and a mounting hole 112 (see fig. 4) formed in the first end 11. The battery cell assembly 20 is disposed in the housing 10, and the pole 30 is disposed through the mounting hole 112, so that one end of the pole 30 is located in the housing 10, and the other end of the pole 30 is located outside the housing 10. The post 30 is insulated from the housing 10 and electrically connected to the cell assembly 20 such that the post 30 can function as one electrode of a battery cell. The first insulating member 40 is sleeved outside the pole 30 and located between the battery cell assembly 20 and the inner side of the first end 11 of the housing 10, so as to avoid electrical conduction between the battery cell assembly 20 and the first end 11 of the housing 10. The end of the pole 30 located inside the housing 10 has an abutting portion 31, and the end of the pole 30 located outside the housing 10 has a caulking portion 32. The abutment 31 of the post 30 is in stop engagement with the side of the first insulator 40 facing the cell assembly 20, thereby limiting movement of the post 30 through the mounting hole 112 out of the housing 10. The caulking portion 32 of the pole 30 is caulking with the outside of the first end portion 11 of the case 10, thereby restricting movement of the pole 30 into the case 10 through the mounting hole 112. That is, the abutting portion 31 of the pole 30 is in stop fit with the first insulating member 40, and the caulking portion 32 of the pole 30 is caulking to the outside of the first end 11 of the housing 10, so that the first insulating member 40 is pressed and fixed to the first end 11 of the housing 10, that is, the pole 30, the first insulating member 40 and the housing 10 are relatively fixed. The first insulating element 40 has a first blocking surface 45, which first blocking surface 45 is disposed at an angle (for example, 60 °, 70 °, 80 °, 90 °, 100 °, 110 °, 120 °, etc.) to a predetermined plane perpendicular to the axis of the mounting hole 112. The contact portion 31 of the pole 30 has a second blocking surface 33 that can be bonded to the first blocking surface 45.

In the above-described battery cell, the pole 30 is first inserted from the inside of the first end 11 through the first insulator 40 and the mounting hole 112 in the first end 11 of the case 10 in this order. Then, the end of the pole 30 located outside the first end 11 (i.e. the end penetrating out of the housing 10 from the mounting hole 112) is mechanically pressed (e.g. by spin riveting), and during the mechanical pressing, the outer diameter of the end of the pole 30 located outside the first end 11 is enlarged to form the riveted portion 32, until the riveted portion 32 forms a riveted structure with the outside of the first end 11, at this time, the pole 30 presses and fixes the first insulating member 40 on the first end 11 of the housing 10, i.e. the pole 30, the first insulating member 40 and the first end 11 of the housing 10 are relatively fixed.

In this way, in the process of riveting the pole 30 and the first end 11 of the housing 10, under the pressure applied to the first insulating member 40 by the abutting portion 31 of the pole 30, the first insulating member 40 has a tendency of buckling deformation, and the first blocking surface 45 on the first insulating member 40 and the second blocking surface 33 on the abutting portion 31 are tightly adhered to each other, so that the second blocking surface 33 on the abutting portion 31 blocks the first insulating member 40 to generate buckling deformation, that is, the first insulating member 40 is ensured not to generate buckling deformation, further adverse effects on the entering of the battery cell assembly 20 are avoided, and the assembly quality of the battery cell is improved.

It is understood that the outside of the first end 11 refers to the side of the first end 11 facing the outside of the housing 10. The inside of the first end 11 refers to the side of the first end 11 facing the inside of the housing 10.

Further, the rigidity of the pole 30 is greater than that of the first insulating member 40, that is, the deformation resistance of the pole 30 is greater than that of the first insulating member 40, so that the second blocking surface 33 on the abutting portion 31 of the pole 30 can better block the first insulating member 40 from buckling deformation. Optionally, the pole 30 is made of copper or aluminum, and the first insulating member 40 is made of plastic.

In particular embodiments, the battery cell further includes an elastomeric seal ring 60. The elastic seal ring 60 is fitted over the pole 30 and is located between the contact portion 31 of the pole 30 and the inner side of the first end 11 of the housing 10. In this way, the elastic seal ring 60 is elastically deformed to a certain extent by the co-extrusion of the abutting portion 31 of the pole 30 and the first end portion 11 of the case 10, so as to seal the mounting hole 112 in the first end portion 11, and prevent the electrolyte in the case 10 from leaking out of the mounting hole 112. That is, the elastic sealing ring 60 is disposed on the inner side of the first end 11 of the housing 10, so that when the housing 10, the battery cell assembly 20 and the terminal post 30 deform, the extrusion force of the terminal post 30 along the mounting hole 112 towards the outside of the housing 10 will be increased, so that the abutting portion 31 of the terminal post 30 can further compress the elastic sealing ring 60, thereby ensuring the sealing effect, and the situation that the sealing effect is poor due to insufficient compression of the elastic sealing ring 60 will not occur.

In particular embodiments, the battery cell further includes a first current collecting plate 80. The first current collecting plate 80 is disposed on a side of the battery cell assembly 20 facing the terminal 30, and is electrically connected to the battery cell assembly 20 and the abutting portion 31 of the terminal 30, i.e., the terminal 30 is electrically connected to the battery cell assembly 20 through the first current collecting plate 80. The first insulating member 40 is located between the first current collecting plate 80 and the first end 11 of the housing 10, thereby avoiding electrical communication of the first current collecting plate 80 with the first end 11.

In the embodiment of the present utility model, the first insulating member 40 further has a first through hole (not shown) and an abutment mating surface 47. The first insulator 40 is sleeved outside the pole 30 through the first through hole. The abutting surface 47 on the first insulating member 40 is disposed around the first through hole and is used for abutting against a side of the abutting portion 31 facing the riveting portion 32, so that the first insulating member 40 is in stop fit with the abutting portion 31 of the pole 30. The first blocking surface 45 on the first insulating member 40 is disposed around the abutment mating surface 47 and is disposed at an angle to the abutment mating surface 47. In this way, during the riveting process between the pole 30 and the outer side of the first end 11 of the housing 10, the abutting portion 31 of the pole 30 applies pressure to the abutting mating surface 47 of the first insulating member 40, so that the first insulating member 40 tends to generate buckling deformation, and further the first blocking surface 45 on the first insulating member 40 and the second blocking surface 33 on the abutting portion 31 of the pole 30 are tightly attached to each other, that is, the second blocking surface 33 on the abutting portion 31 of the pole 30 can block the first insulating member 40 from generating buckling deformation.

Optionally, the abutment mating surface 47 is perpendicular to the axis of the mounting hole 112. The first blocking surface 45 is a cylindrical surface arranged around the abutting mating surface 47 and is parallel to the axis of the mounting hole 112, i.e. the abutting mating surface 47 is perpendicular to the first blocking surface 45. That is, the first blocking surface 45 is parallel to the wall thickness direction of the first end 11 of the housing 10, and the abutment mating surface 47 is perpendicular to the wall thickness direction of the first end 11 of the housing 10. Specifically, in the embodiment shown in fig. 3, the first blocking surface 45 is parallel to the up-down direction, and the abutment mating surface 47 is perpendicular to the up-down direction.

In particular to the embodiment, the first insulating member 40 includes a first annular region 41 and a second annular region 43. The first annular region 41 is arranged around the first through hole, and the second annular region 43 is arranged around the first annular region 41. That is, the first insulating member 40 has a first through hole, a first annular region 41, and a second annular region 43 in this order from the middle to the periphery. The first annular region 41 is convex from a side facing away from the first end 11 to a side adjacent to the first end 11 to form an annular recess (not shown) on a side of the first annular region 41 facing away from the first end 11 and an annular projection (not shown) on a side adjacent to the first end 11. The bottom surface of the annular groove is the above-mentioned abutment mating surface 47 for abutment with the side of the abutment portion 31 facing the caulking portion 32. The side surface of the annular groove is the first blocking surface 45 for adhering to the second blocking surface 33 of the abutting portion 31. It is understood that the circumferential side surface of the abutment 31 is the second blocking surface 33. The circumferential edge of the abutment 31 is located in the annular groove such that a side surface of the abutment 31 facing the caulking portion 32 abuts against the abutment mating surface 47, and a circumferential side surface (i.e., the second blocking surface 33) of the abutment 31 abuts against the first blocking surface 45.

Further, the second annular region 43 of the first insulator 40 is provided with a reinforcing rib 431 on a side facing the first end 11. The rib 431 and the annular projection are abutted against the inner side surface of the first end portion 11, so that the abutting relationship between the first insulating member 40 and the first end portion 11 is more stable and reliable. In this way, the reinforcing ribs 431 and the annular projection can function to reinforce the deformation resistance of the first insulating member 40, further avoiding buckling deformation of the first insulating member 40.

Alternatively, the reinforcing rib 431 may include a plurality of annular reinforcing ribs and/or a plurality of linear reinforcing ribs, and the manner in which the respective annular reinforcing ribs and linear reinforcing ribs are distributed is not limited herein, as long as the deformation resistance of the first insulating member 40 is satisfied.

In an embodiment of the present utility model, the battery cell further includes a conductive block 70 and a second insulating member 50. The conductive block 70 is sleeved on one end of the pole 30 located outside the housing 10 and is riveted with the riveting part 32. The second insulating member 50 is sleeved outside the pole 30 and is located between the conductive block 70 and the outer side surface of the first end 11, so that insulation between the conductive block 70 and the first end 11 of the housing 10 is achieved, and the first insulating member 40, the first end 11 of the housing 10, the second insulating member 50 and the conductive block 70 are pressed and fixed between the abutting portion 31 and the caulking portion 32 of the pole 30. In this way, the abutting portion 31 of the pole 30 is electrically connected with the battery cell assembly 20, the riveting portion 32 of the pole 30 is electrically connected with the conductive block 70, and the arrangement of the conductive block 70 is beneficial to enhancing the overcurrent capability of the pole 30. Alternatively, the material of the pole 30 and the conductive block 70 may be a conductive material such as aluminum or copper.

Further, the second insulator 50 has a second through hole (not shown) and an annular protrusion (not shown). The second insulating member 50 is sleeved outside the pole 30 through a second through hole, and the annular protruding portion is arranged around the second through hole and is located between the hole wall of the mounting hole 112 and the pole 30, so as to realize insulation between the pole 30 and the hole wall of the mounting hole 112.

Further, the elastic sealing ring 60 is sleeved outside the pole 30, and the first insulating member 40 is sleeved outside the elastic sealing ring 60 through the first through hole. The elastic seal ring 60 is partially pressed into the mounting hole 112 and abuts against the annular protrusion of the second insulating member 50, thereby further realizing insulation and sealing between the hole wall of the mounting hole 112 and the post 30. The abutting portion 31 of the pole 30 abuts against the abutting mating surface 47 of the elastic seal ring 60 and the first insulator 40 at the same time, so that insulation between the abutting portion 31 of the pole 30 and the first end 11 of the housing 10 is achieved; on the other hand, the first insulator 40 is used to limit the compression amount of the abutting portion 31 of the pole 30 on the elastic sealing ring 60, so that the compression amount of the elastic sealing ring 60 is prevented from being too large, and the service life of the elastic sealing ring 60 is prevented from being shortened.

Specifically, the abutting portion 31 has a structure of the pole 30 itself (i.e., the abutting portion 31 exists before the pole 30 is riveted to the conductive block 70), and the caulking portion 32 is formed when the pole 30 is riveted to the conductive block 70. More specifically, during assembly, the post 30 is first sequentially passed through the first through hole of the first insulator 40, the elastic seal ring 60, the mounting hole 112 of the first end 11, the second through hole of the second insulator 50, and the conductive block 70 from the inner side of the first end 11 until the abutting portion 31 of the post 30 presses the elastic seal ring 60 and abuts against the abutting mating surface 47 of the first insulator 40; then, the end of the pole 30 located outside the first end 11 is mechanically pressed (such as spin riveting, etc.), and during the mechanical pressing, the outer diameter of the end of the pole 30 located outside the first end 11 is enlarged to form a riveted portion 32, so that the riveted portion 32 is riveted with the conductive block 70, thereby realizing the relative fixation of the pole 30, the conductive block 70, the second insulating member 50, the first insulating member 40 and the first end 11 of the housing 10.

The material of the first insulating member 40 and the second insulating member 50 may be plastic, but other insulating materials may be used, and the present utility model is not limited thereto. The elastic sealing ring 60 may be made of rubber, but other materials having certain elasticity and insulation can be used, and the material is not limited herein.

Referring to fig. 1 and 2, in the embodiment of the utility model, an end of the housing 10 opposite to the first end 11 has an opening 13. The battery cell further includes a cover plate 90, where the cover plate 90 is hermetically disposed at the opening 13 of the housing 10 to close the opening 13, so that the housing 10 and the cover plate 90 together enclose an inner cavity for accommodating the battery cell assembly 20, the electrolyte, and the like.

Further, the battery cell further includes a second current collecting plate 100. The second current collecting plate 100 is disposed between the cell assembly 20 and the cover plate 90, and is electrically connected to both the cell assembly 20 and the cover plate 90. That is, the cover plate 90 and the case 10 are electrically connected to the cell assembly 20 through the second current collecting plate 100, so that the case 10 serves as the other electrode of the battery cell, i.e., the electrode post 30 and the case 10 serve as the two poles (i.e., the positive electrode and the negative electrode) of the battery cell, respectively, to commonly achieve the input and output of the electric power of the battery cell.

Specifically, the cell assembly 20 is composed of a positive electrode tab, a negative electrode tab, and a separator. The battery cell mainly relies on metal ions to move between the positive pole piece and the negative pole piece to work. The positive electrode plate comprises a positive electrode current collector and a positive electrode active material layer, wherein the positive electrode active material layer is coated on the surface of the positive electrode current collector, the positive electrode current collector without the positive electrode active material layer protrudes out of the positive electrode current collector coated with the positive electrode active material layer, and the positive electrode current collector without the positive electrode active material layer is used as a positive electrode lug. Taking a lithium ion battery as an example, the material of the positive electrode current collector may be aluminum, and the positive electrode active material may be lithium cobaltate, lithium iron phosphate, ternary lithium, lithium manganate or the like. The negative electrode plate comprises a negative electrode current collector and a negative electrode active material layer, wherein the negative electrode active material layer is coated on the surface of the negative electrode current collector, the negative electrode current collector without the negative electrode active material layer protrudes out of the negative electrode current collector coated with the negative electrode active material layer, and the negative electrode current collector without the negative electrode active material layer is used as a negative electrode tab. The material of the negative electrode current collector may be copper, and the negative electrode active material may be carbon, silicon, or the like. The material of the separator may be polypropylene (PP) or Polyethylene (PE). In addition, the cell assembly 20 may be a winding type structure or a lamination type structure, and the embodiment of the present utility model is not limited thereto.

Optionally, the first current collecting plate 80 is electrically connected to the positive electrode tab of the cell assembly 20, such that the post 30 serves as the positive electrode of the battery cell. The second current collecting plate 100 is electrically connected with the negative electrode tab of the cell assembly 20 such that the case 10 serves as a negative electrode of the battery cell. Of course, in other embodiments, the first current collecting plate 80 is electrically connected with the negative electrode tab of the cell assembly 20 such that the post 30 acts as the negative electrode of the battery cell. The second current collecting plate 100 is electrically connected to the positive electrode tab of the cell assembly 20, so that the case 10 serves as a positive electrode of the battery cell, which is not limited herein.

Alternatively, the material of the case 10 and the cover plate 90 may be steel. The material of the first current collecting plate 80 and the second current collecting plate 100 may be copper, and the outer surfaces of the first current collecting plate 80 and the second current collecting plate 100 have a nickel plating layer. Of course, in other embodiments, other conductive materials may be used for the housing 10, the cover plate 90, the first current collecting plate 80 and the second current collecting plate 100, which are not limited herein.

In particular, in the embodiment shown in fig. 1, the housing 10 has a cylindrical structure with one end opened and the other end closed, and the cover plate 90 is sealingly disposed at the opening 13 of the housing 10. In other embodiments, the housing 10 may also have a cylindrical structure with two open ends, and two cover plates 90 are used to seal the openings at the two ends of the housing 10, and the mounting hole 112 is formed in one of the cover plates 90. That is, the case 10 may have a cylindrical structure with one end open or both ends open, and is not limited thereto. As for the sealing of the cover plate 90 to the opening 13 of the housing 10, a relatively mature prior art technique, such as laser welding, is used, but is not limited thereto.

Based on the battery, the utility model further provides electric equipment. The powered device includes a battery or battery cell as described in any of the embodiments above, with the powered device utilizing the battery or battery cell as a power source. In particular, the electrical consumer may be a vehicle, a mobile phone, a portable device, a notebook computer, a ship, a spacecraft, an electric toy, an electric tool, and the like. The vehicle can be a fuel oil vehicle, a fuel gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid electric vehicle or a range-extended vehicle; spacecraft including airplanes, rockets, space planes, spacecraft, and the like; the electric toy includes fixed or mobile electric toys, such as a game machine, an electric car toy, an electric ship toy, and an electric airplane toy; power tools include metal cutting power tools, grinding power tools, assembly power tools, and railroad power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete shakers, and electric planers, among others. The embodiment of the utility model does not limit the electric equipment in particular.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (10)

1. A battery cell, comprising:

a housing (10) having a first end portion (11) and a mounting hole (112) formed in the first end portion (11);

a battery cell assembly (20) housed in the housing (10);

the pole post (30) penetrates through the mounting hole (112), is insulated from the shell (10) and is electrically connected with the battery cell assembly (20); an abutting part (31) is arranged at one end of the pole (30) positioned in the shell (10), and a riveting part (32) is arranged at one end of the pole (30) positioned outside the shell (10); and

A first insulating member (40) sleeved outside the pole (30) and located between the cell assembly (20) and the first end (11); the abutting part (31) is in stop fit with one side, facing the battery cell assembly (20), of the first insulating piece (40), and the riveting part (32) is riveted with the outer side of the first end part (11);

wherein the first insulating element (40) is provided with a first blocking surface (45), and the first blocking surface (45) is distributed at an included angle with a preset plane perpendicular to the axis of the mounting hole (112); the contact portion (31) has a second blocking surface (33) that can be bonded to the first blocking surface (45).

2. The battery cell according to claim 1, further comprising an elastic sealing ring (60), wherein the elastic sealing ring (60) is sleeved outside the pole (30) and is located between the abutting portion (31) and the first end portion (11).

3. The battery cell according to claim 1, wherein the stiffness of the post (30) is greater than the stiffness of the first insulator (40).

4. The battery cell according to claim 1, wherein the first insulating member (40) has a first through hole and an abutment mating surface (47), the first insulating member (40) is sleeved outside the pole (30) through the first through hole, the abutment mating surface (47) is arranged around the first through hole, and the side of the abutment portion (31) facing the caulking portion (32) is abutted against the abutment mating surface (47); the first blocking surface (45) and the abutting matching surface (47) are distributed at an included angle.

5. The battery cell according to claim 4, wherein the abutment mating surface (47) is perpendicular to the axis of the mounting hole (112), and the first blocking surface (45) is a cylindrical surface laid around the abutment mating surface (47) and parallel to the axis of the mounting hole (112).

6. The battery cell of claim 4, wherein the first insulator (40) comprises a first annular region (41) and a second annular region (43), the first annular region (41) being disposed around the first through-hole, the second annular region (43) being disposed around the first annular region (41);

the first annular region (41) protrudes outwards from a side facing away from the first end (11) towards a side adjacent to the first end (11) to form an annular recess in the side of the first annular region (41) facing away from the first end (11) and an annular projection in the side adjacent to the first end (11); the bottom surface of the annular groove is the abutting matching surface (47), and the side surface of the annular groove is the first blocking surface (45).

7. The battery cell according to claim 6, characterized in that the side of the second annular region (43) facing the first end (11) has a reinforcing rib (431), both the reinforcing rib (431) and the annular projection being in abutment with the first end (11).

8. The battery cell of any one of claims 1 to 7, further comprising a conductive block (70) and a second insulator (50), wherein the conductive block (70) is sleeved outside the pole (30) and is located outside the housing (10) and riveted with the rivet (32), and wherein the second insulator (50) is sleeved outside the pole (30) and is located between the conductive block (70) and the first end (11).

9. A battery comprising a battery cell according to any one of claims 1 to 8.

10. A powered device comprising a battery cell according to any one of claims 1 to 8 or a battery according to claim 9.