CN218299844U - Battery with a battery cell - Google Patents

Abstract

The utility model discloses a battery, battery include casing, electric core and current collector disc, and the axial one end of electric core is located to the current collector disc, forms the chamber that holds electric core in the casing, and the current collector disc is located between the diapire of electric core and holding chamber, the periphery wall of current collector disc and the interior perisporium butt of casing. According to the utility model discloses a battery, the in-process of casing of packing into after electric core and current collection dish welding can prevent better that the current collection dish is eccentric for the casing to can guarantee the axiality of electric core and casing, and then can avoid influencing battery life's risk because of the interior perisporium contact of electric core off-centre lead to electric core and casing, do benefit to the stability and the reliability that promote the battery.

Description

Battery with a battery cell

Technical Field

The utility model belongs to the technical field of the battery technique and specifically relates to a battery is related to.

Background

As battery technology has matured, batteries are widely used in many fields. For example, secondary batteries are widely used due to their advantages of high energy density, high output voltage, and the like, and among them, the battery performance such as endurance and safety is important. However, in the production process of the battery in the related art, the coaxiality of the battery core and the shell cannot be guaranteed when the battery core is inserted into the shell, namely, the problem of eccentricity of the battery core exists, so that the performances of endurance, safety and the like of the battery core are directly influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a battery, the current collecting dish of battery is eccentric when can preventing that an electric core from going into a section of thick bamboo, makes the battery has the advantage that stability and reliability are high.

According to the utility model discloses battery, include: casing, electric core and current collection dish, the current collection dish is located electric core axial one end, form in the casing and hold the chamber that holds of electric core, the current collection dish is located electric core with between the diapire of holding the chamber, the periphery wall of current collection dish with the internal perisporium butt of casing.

According to the utility model discloses battery, current collector locate between the diapire of electric core and holding chamber and current collector's periphery wall and the internal perisporium butt of casing for the in-process of casing of packing into after electric core and current collector welding, can prevent better that current collector from being eccentric for the casing, thereby can guarantee the axiality of electric core and casing, and then can avoid influencing battery life's risk because of the internal perisporium contact of electric core eccentric electric core and casing, do benefit to the stability and the reliability that promote the battery. In addition, the current collecting disc is low in connection difficulty with the battery core and the shell and high in connection stability.

According to some embodiments of the present invention, the current collecting plate is an integral conductive member.

According to the utility model discloses a some embodiments, the current collector dish includes the current collector dish body and locates the turn-ups at current collector dish body periphery border, the turn-ups orientation is close to the direction of electric core extends, turn-ups periphery wall constitutes the periphery wall of current collector dish.

According to some embodiments of the present invention, the edge of the turn-over is along a circumferential extension of the collecting tray body.

According to the utility model discloses a some embodiments, electric core includes body portion and utmost point ear, utmost point ear locates body portion orientation the one end of current collector, current collector body orientation the terminal surface of electric core is first terminal surface, utmost point ear with first terminal surface welding, the turn-ups protrusion highly be less than of first terminal surface the height of utmost point ear.

According to the utility model discloses a some embodiments, the current collector deviates from the terminal surface of electric core is the second terminal surface, form first welding arch on the second terminal surface, first welding arch with hold the diapire welding in chamber.

According to the utility model discloses a some embodiments, the diapire of casing forms welding recess, the at least part of first welding arch projection on the reference surface is located in the projection of welding recess on the reference surface, the reference surface perpendicular to the axial direction of current collector disc, the diapire of casing is located the casing deviates from one side of electricity core.

According to the utility model discloses a some embodiments, the welding recess is the annular, first welding arch is the sector ring shape, first welding arch is in projection on the reference surface is first projection, the welding recess is in projection on the reference surface is the second projection on the radial direction of current collector dish, first projection is located between the both ends edge of second projection.

According to the utility model discloses a some embodiments, the current collector deviates from the terminal surface of electric core is the second terminal surface, the neighboring formation direction inclined plane of second terminal surface by the electric core orientation hold in the direction of the diapire of chamber, direction inclined plane orientation is close to the direction slope of the central axis of current collector extends.

According to some embodiments of the utility model, the current collector orientation the terminal surface of the diapire of holding the chamber is equipped with the edge first welding arch and the first punching press recess of arranging of the circumference interval of current collector, the current collector orientation the terminal surface of electric core is equipped with the edge second welding arch and the second punching press recess of arranging of the circumference interval of current collector, first welding arch with the diapire welding of holding the chamber and back of the body setting mutually with second punching press recess, second welding arch with electric core welding and with first punching press recess sets up mutually back mutually.

According to the utility model discloses a some embodiments, the projection of first welding arch on the reference surface with the projection coincidence of second punching press recess on the reference surface, second welding arch with the projection coincidence of first punching press recess on the reference surface, the reference surface perpendicular to the axial direction of current collecting plate.

According to some embodiments of the invention, the current collecting disc is a one-time stamped and formed part.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

Fig. 1 is a perspective view of a current collecting plate and a housing of a battery according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a housing of a battery according to an embodiment of the invention;

fig. 3 is a partial cross-sectional view of a current collecting disk and a housing of a battery according to an embodiment of the present invention;

FIG. 4 is an enlarged view of area A of FIG. 3;

fig. 5 is a schematic view of a current collecting plate of a battery according to an embodiment of the present invention;

fig. 6 is a schematic view of another angle of a current collecting plate of a battery according to an embodiment of the present invention;

fig. 7 is a schematic view of another angle of the housing of the battery according to an embodiment of the present invention.

Reference numerals:

a current collecting plate 100;

a current collecting disc body 1; a first end face 11; a second end face 12; a first welding projection 13; a second welding projection 14; a first punched groove 15; a second punched groove 16; a guide slope 17;

flanging 2;

a housing 200; a housing chamber 210; the groove 220 is welded; an inner sidewall 221; an outer sidewall 222;

reference plane 300.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary intended for explaining the present invention, and should not be construed as limiting the present invention.

The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present disclosure provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize the applicability of other processes and/or the use of other materials.

A battery according to an embodiment of the present invention is described below with reference to the drawings.

As shown in fig. 1 and fig. 2, the battery according to the embodiment of the present invention includes: the battery comprises a casing 200, a battery core (not shown) and a current collecting disc 100, wherein the current collecting disc 100 is arranged at one axial end of the battery core, a containing cavity 210 for containing the battery core is formed in the casing 200, and the current collecting disc 100 is arranged between the battery core and the bottom wall of the containing cavity 210. That is, both axial ends of the collecting tray 100 are respectively connected to the battery cell and the bottom wall of the accommodating chamber 210, that is, the end of the battery cell opposite to the bottom wall of the accommodating chamber 210 can be connected to the casing 200 through the collecting tray 100. Therefore, the battery core and the current collecting disc 100 can be assembled firstly, for example, the battery core and the current collecting disc 100 can be welded and assembled outside the casing 200, so that the assembly space of the battery core and the current collecting disc 100 is large, the assembly difficulty of the battery core and the current collecting disc 100 is reduced, then the welded battery core and the current collecting disc 100 are installed in the accommodating cavity 210, the current collecting disc 100 is welded on the bottom wall of the accommodating cavity 210, and the connection difficulty between the battery core and the bottom wall of the accommodating cavity 210 can be reduced well. In addition, the battery core and the current collecting tray 100 can be better accommodated through the casing 200, so that the casing 200 has a good protection effect on the battery core, and is favorable for ensuring the safety and stability of the battery core, and the service life of the battery is prolonged. In a specific example, the battery is a cylindrical battery, and the case 200 is a single-pass battery case, where the single-pass battery case refers to a cylindrical case with an opening at one end, so that the battery cell and the current collecting tray 100 can be loaded into the case 200 through the opening, which is beneficial to reducing the difficulty of loading the battery cell into the case.

Further, as shown in fig. 3 and 4, the outer peripheral wall of the collecting plate 100 abuts against the inner peripheral wall of the housing 200. Therefore, the movement of the collecting plate 100 in the radial direction can be well restricted by the housing 200, and the coaxiality of the collecting plate 100 and the housing 200 can be well maintained. Therefore, in the process of installing the collecting tray 100 into the casing 200 after welding the battery core and the collecting tray 100, the collecting tray 100 can be better prevented from being eccentric relative to the casing 200, so that the coaxiality of the battery core and the casing 200 can be ensured, the risk that the service life of the battery is influenced by the contact of the battery core and the inner peripheral wall of the casing 200 due to the eccentricity of the battery core can be avoided, and the stability and the reliability of the battery can be improved.

In addition, the current collecting plate 100 is a one-piece conductive member, that is, the current collecting plate 100 is a conductor. From this, the current collecting disc of integrative structure processing is convenient to be convenient for assemble to the corresponding position of battery, and do benefit to and reduce current collecting disc 100 and electric core and casing 200's the connection degree of difficulty, and do benefit to and promote current collecting disc 100 and electric core and casing 200's connection stability.

According to the utility model discloses the battery, current collector 100 is located between the diapire of electricity core and holding chamber 210 and current collector 100's periphery wall and casing 200's internal perisporium butt, make the in-process of casing 200 of packing into after electricity core and current collector 100 welding, can prevent current collector 100 for casing 200 off-centre betterly, thereby can guarantee electric core and casing 200's axiality, and then can avoid influencing battery life's risk because of the electric core off-centre leads to electric core and casing 200's internal perisporium contact, do benefit to the stability and the reliability that promote the battery. In addition, the current collecting plate 100 has low connection difficulty with the battery cell and the case 200, and has high connection stability.

According to the utility model discloses a some embodiments, as shown in fig. 4 and 5, current collecting plate 100 includes current collecting plate body 1 and locates current collecting plate body 1 periphery border turn-ups 2, and turn-ups 2 orientation is close to the direction extension of electric core, and turn-ups 2's periphery wall constitutes current collecting plate 100's periphery wall. That is, the outer peripheral wall of the burring 2 abuts against the inner peripheral wall of the housing 200. Specifically, electric core can with the end face weld of current collector dish body 1 orientation electric core, namely, electric core and current collector dish body 1's hookup location is located turn-ups 2 inboard, inboard here is the central axis for current collector dish in the radial direction of current collector dish, namely, in current collector dish's radial direction, one side that the turn-ups is close to current collector dish central axis is the inboard, one side that the turn-ups deviates from current collector dish center is the outside, make turn-ups 2 have good protecting effect to the hookup location who lies in inboard electric core and current collector dish body 1, in order to guarantee electric core and current collector dish 100's stable connection. In addition, make turn-ups 2 can support on the internal perisporium of casing 200 better, can promote the structural strength of casing 200 better to prevent to hold chamber 210 internal deformation extrusion electric core when the external force of bearing of casing 200, do benefit to further to promote the stability and the reliability of battery.

According to some optional embodiments of the utility model, turn-ups 2 extends along the circumference of current collecting disc body 1. That is to say, the periphery of current collecting disc body 1 all is equipped with turn-ups 2 for in the week of current collecting disc 100, turn-ups 2 has good protective effect to the position of being connected that lies in radially inboard electric core and current collecting disc body 1, with the stability of being connected of further promotion electric core and current collecting disc body 1. In addition, in the circumferential direction of the collecting plate 100, the supporting position of the flange 2 on the inner circumferential wall of the housing 200 can be increased, which is favorable for further improving the structural strength of the housing 200.

According to the utility model discloses a some optional embodiments, electric core includes body portion and utmost point ear, and utmost point ear is located body portion towards the one end of current collecting disc 100, and current collecting disc body 1 is first terminal surface 11 towards electric core terminal surface, and utmost point ear welds with first terminal surface 11. Wherein, in the process of assembling the electric core and the current collecting disc 100, a plurality of tabs located at the same axial end on the electric core need to be processed by kneading and leveling to form tab portions with flat end surfaces, so that the end surfaces of the tab portions facing the current collecting disc body 1 can be attached to and welded with the first end surface 11, and the connection stability of the electric core and the current collecting disc 100 is favorably improved. In addition, make at least part of utmost point ear and first terminal surface 11's hookup location be located turn-ups 2 inboard to have good safeguard effect through turn-ups 2 antipodal ear and utmost point ear and first terminal surface 11's hookup location, in order to guarantee electric core and the stable of current collecting tray 100 and be connected.

Wherein, the height that turn-ups 2 protrusion first terminal surface 11 is less than the height of utmost point ear portion. That is to say, turn-ups 2 protrudes first terminal surface 11 highly is less than the height that utmost point ear portion protrudes this somatic part, promptly, utmost point ear position is in turn-ups 2 at the ascending inboard of current collecting tray 100 radial direction, this somatic part is located turn-ups 2 and keeps away from one side of current collecting tray body 1 on current collecting tray 100 axial direction, thereby can avoid electric core when the inflation of charge-discharge in-process this somatic part and turn-ups 2 contact to cause extrusion damage to this somatic part betterly, and then can promote the stability and the reliability of electric core, do benefit to the life of extension battery.

In a specific example, the flange 2 is annular and extends along the circumferential direction of the collecting plate body 1, the outer circumferential wall of the flange 2 abuts against the inner circumferential wall of the casing 200, the lower end of the tab portion extends into the flange 2, the lower end surface of the tab portion is welded to the first end surface 11, and the body portion is located above the flange 2 to prevent the body portion from contacting the flange 2 when expanding.

According to some embodiments of the present invention, as shown in fig. 4, fig. 6 and fig. 7, the end face of the current collecting plate 100 deviating from the electric core is a second end face 12, a first welding protrusion 13 is formed on the second end face 12, and the first welding protrusion 13 is welded to the bottom wall of the accommodating cavity 210. That is to say, the part of the collecting tray body 1 facing the end face of the bottom wall of the accommodating chamber 210 is protruded to form the first welding projection 13, so that the flatness of the first welding projection 13 can be better ensured, the first welding projection 13 can be attached to and welded with the bottom wall of the accommodating chamber 210, and the stability of connecting the collecting tray 100 and the housing 200 can be improved.

Further, a welding groove 220 is formed on the bottom wall of the casing 200, at least part of the projection of the first welding projection 13 on the reference surface 300 is located in the projection of the welding groove 220 on the reference surface 300, the reference surface 300 is perpendicular to the axial direction of the current collecting plate 100, and the bottom wall of the casing 200 is located on the side, away from the battery cell, of the casing 200. That is, the bottom wall of the case 200 is recessed toward a direction close to the collecting plate 100 to form a welding recess 220, and the first welding projection 13 is disposed at least partially opposite to the welding recess 220 in the axial direction of the collecting plate 100. After the battery core and the current collecting tray 100 are welded, the battery core is placed into the shell, and the first welding protrusion 13 is attached to the bottom wall of the accommodating cavity 210, so that the first welding protrusion 13 is welded to the bottom wall of the accommodating cavity 210 through laser welding on the bottom wall of the shell 200. Therefore, by arranging the welding groove 220 at least partially opposite to the first welding projection 13 in the axial direction of the collecting plate 100, the distance between the bottom wall of the welding groove 220 and the bottom wall of the accommodating cavity 210, that is, the distance between the bottom wall of the welding groove 220 and the first welding projection 13, can be reduced at the position where the first welding projection 13 is opposite to the welding groove 220, so that a welding tool can transfer heat to the connecting position of the first welding projection 13 and the bottom wall of the accommodating cavity 210 through the bottom wall of the welding groove 220, the heat transfer path is short, the welding difficulty between the housing 200 and the first welding projection 13 can be reduced well, and the assembly efficiency of the battery can be improved.

According to some optional embodiments of the utility model, welding recess 220 is the annular, and first welding projection 13 is the sector ring shape, and the projection of first welding projection 13 on reference surface 300 is first projection, and the projection of welding recess 220 on reference surface 300 is the second projection, and in the radial direction of current collector 100, first projection is located between the both ends edge of second projection. That is, in a radial direction of the current collecting disk 100, one end of the first welding boss 13 close to the central axis of the current collecting disk 100 is located outside the inner sidewall 221 of the welding groove 220 close to the central axis of the current collecting disk 100, i.e., a distance between one end of the first welding boss 13 close to the central axis of the current collecting disk 100 and the central axis of the current collecting disk 100 is greater than a distance between the inner sidewall 221 of the welding groove 220 close to the central axis of the current collecting disk 100 and the central axis of the current collecting disk 100, and further, one end of the first welding boss 13 far from the central axis of the current collecting disk 100 is located inside the outer sidewall 222 of the welding groove 220 far from the central axis of the current collecting disk 100, i.e., a distance between one end of the first welding boss 13 far from the central axis of the current collecting disk 100 and the central axis of the current collecting disk 100 is less than a distance between the outer sidewall 222 of the welding groove 220 far from the central axis of the current collecting disk 100 and the central axis of the current collecting disk 100.

Therefore, the step of aligning the first welding projections 13 with the first welding projections 13 in the circumferential direction of the collecting plate 100 can be omitted, so that after the collecting plate 100 is housed, the first welding projections 13 are aligned with at least part of the welding grooves 220 in the circumferential direction of the collecting plate 100, thereby reducing the difficulty in welding the collecting plate 100 with the case 200, facilitating the simplification of the assembly process of the battery, and improving the assembly efficiency of the battery.

According to some embodiments of the present invention, as shown in fig. 6, the end face of the collecting tray 100 deviating from the battery cell is the second end face 12, the peripheral edge of the second end face 12 forms the guiding inclined plane 17, and in the direction of the bottom wall of the accommodating chamber 210 toward the battery cell, the guiding inclined plane 17 extends obliquely toward the direction close to the central axis of the collecting tray 100. Therefore, in the process of mounting the battery core to the battery shell 200, the position offset of the collecting tray 100 when entering the shell 200 can be corrected well through the guide inclined plane 17, so that the collecting tray 100 can be inserted into the battery shell 200 smoothly until the collecting tray 100 abuts against the bottom wall of the accommodating cavity 210, and the assembly difficulty of mounting the battery core into the shell 200 is reduced.

According to some embodiments of the utility model, the terminal surface of the diapire of current collecting tray 100 towards holding chamber 210 is equipped with first welding protrusion 13 and first punching press recess 15 of arranging along the circumference interval of current collecting tray 100, current collecting tray 100 is equipped with second welding protrusion 14 and second punching press recess 16 of arranging along the circumference interval of current collecting tray 100 towards the terminal surface of electric core, first welding protrusion 13 with hold chamber 210's diapire welding and set up mutually back of the body with second punching press recess 16, second welding protrusion 14 sets up mutually back of the body with electric core welding and with first punching press recess 15. Therefore, the flatness of the first welding bumps 13 and the second welding bumps 14 can be better ensured, and the connection stability of the battery core and the current collecting disc body 1 and the connection stability of the current collecting disc body 1 and the shell 200 are favorably improved. Specifically, in the process of assembling the battery core and the current collecting plate body 1, the surface of the second welding protrusion 14 facing the battery core is relatively flat, so that the tab of the battery core can be better attached to the surface of the second welding protrusion 14 facing the battery core, and the stability of welding the battery core and the second welding protrusion 14 is favorably improved; in the process of welding the collecting tray 100 and the housing 200, the surface of the first welding projection 13 facing the bottom wall of the accommodating cavity 210 is flat, so that the first welding projection 13 can be better attached to the bottom wall of the accommodating cavity 210, and the stability of connection between the collecting tray 100 and the housing 200 is improved.

Further, the projection of the first welding projection 13 on the reference surface 300 coincides with the projection of the second stamped recess 16 on the reference surface 300, the second welding projection 14 coincides with the projection of the first stamped recess 15 on the reference surface 300, and the reference surface 300 is perpendicular to the axial direction of the collector plate.

That is, a stamping operation may be performed on an end surface of the manifold plate 100 facing the bottom wall of the accommodating chamber 210 to form a first stamping groove 15 recessed toward a direction close to the cell, and to arch a portion of the manifold plate 100 facing the end surface of the cell to form a second welding projection 14, and a stamping operation may be performed on an end surface of the manifold plate 100 facing the cell to form a second stamping groove 16 recessed toward a direction close to the bottom wall of the accommodating chamber 210, and to arch a portion of the manifold plate 100 facing the end surface of the bottom wall of the accommodating chamber 210 to form the first welding projection 13, that is, both the first welding projection 13 and the second welding projection 14 may be formed by stamping on the manifold plate 100, so that production materials of the manifold plate 100 may be better saved, production cost is low, and it is advantageous to reduce battery input and to improve a level of weight reduction of the battery.

According to some embodiments of the present invention, the manifold plate 100 is a one-time stamped and formed part. Therefore, the production precision of the collecting disc 100 can be improved well, the integrity of the collecting disc 100 can be ensured, the production efficiency is high, and the production cost is low. In a specific example, the collecting tray 100 comprises a collecting tray body 1 and a flange 2, so that the collecting tray 100 formed by one-time stamping can better ensure the firm connection between the collecting tray body 1 and the flange 2, and the structural strength of the collecting tray 100 is improved.

A battery according to an embodiment of the present invention is described below with reference to fig. 1 to 7. It is to be understood that the following description is exemplary only and is intended to be illustrative of the present invention and is not to be construed as limiting the invention.

Specifically, the battery comprises a casing 200, a battery core and a current collecting disc 100, wherein the casing 200 is cylindrical, a containing cavity 210 with an upward opening is formed in the casing 200, the current collecting disc 100 is arranged between the battery core and the bottom wall of the containing cavity 210, and the battery core and the current collecting disc 100 are welded and then are loaded into the containing cavity 210 through the opening.

Wherein, current collecting disc 100 includes current collecting disc body 1 and turn-ups 2, and turn-ups 2 locate current collecting disc body 1's the peripheral edge and be parallel with the internal perisporium of casing 200, and turn-ups 2 extends along current collecting disc 100's circumference and is the annular and upwards protrusion current collecting disc body 1, and turn-ups 2's periphery wall and casing 200's internal perisporium butt.

Further, the up end of current collector body 1 is first terminal surface 11, the lower terminal surface of current collector body 1 is second terminal surface 12, the periphery border of first terminal surface 11 forms direction inclined plane 17, in the direction from top to bottom, direction inclined plane 17 extends towards the direction slope of the central axis that is close to current collector 100, second terminal surface 12 forms first punching press recess 15 and forms the second welding protrusion 14 that corresponds with first punching press recess 15 on first terminal surface 11, second welding protrusion 14 is located turn-ups 2 inboard and is "Y" shape, the electric core includes the somatic part and locates the utmost point ear of somatic part lower extreme, the lower terminal surface of utmost point ear pastes and welds with the upper surface of second welding protrusion 14, turn-ups 2 upwards protrudes current collector body 1 highly is less than the height that the utmost point ear is protruding downwards, the utmost point ear position is inboard at turn-ups 2 somatic part, the somatic part is located the upside of turn-ups 2. In addition, second stamping grooves 16 spaced apart from the second welding projections 14 are formed on the first end surface 11 to form first welding projections 13 corresponding to the second stamping grooves 16 on the second end surface 12, the first welding projections 13 are fan-shaped and three in number, the three first welding projections 13 are spaced apart in the circumferential direction of the manifold 100, and the lower surfaces of the first welding projections 13 are attached to the bottom wall of the accommodating chamber 210. Further, the bottom wall of the housing 200 forms a welding groove 220, the welding groove 220 is ring-shaped, and, in a radial direction of the current collecting plate 100, a width of the welding groove 220 is larger than a width of the first welding projection 13, a projection of the first welding projection 13 on a horizontal plane is located within an outer peripheral edge of a projection of the welding groove 220 on the horizontal plane.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the description of the present specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (12)

1. A battery, comprising: casing, electric core and current collector disc, current collector disc is located the axial one end of electric core, form in the casing and hold the chamber that holds of electric core, current collector disc is located electric core with hold between the diapire of chamber, current collector disc's periphery wall with the internal perisporium butt of casing.

2. The cell defined in claim 1, wherein the current collecting tray is an integral electrically conductive member.

3. The battery of claim 1, wherein the current collecting plate comprises a current collecting plate body and a flange arranged at the peripheral edge of the current collecting plate body, the flange extends towards the direction close to the battery core, and the peripheral wall of the flange forms the peripheral wall of the current collecting plate.

4. The cell defined in claim 3, wherein the flap extends along a circumferential direction of the current collecting disk body.

5. The battery of claim 3, wherein the battery cell includes a body portion and a tab portion, the tab portion is disposed at an end of the body portion facing the current collecting plate, an end surface of the current collecting plate body facing the battery cell is a first end surface, the tab portion is welded to the first end surface, and a height of the flange protruding the first end surface is smaller than a height of the tab portion.

6. The battery of claim 1, wherein an end surface of the current collecting tray facing away from the cell is a second end surface, and a first welding protrusion is formed on the second end surface and is welded with the bottom wall of the accommodating cavity.

7. The battery of claim 6, wherein the bottom wall of the casing forms a welding groove, at least part of the projection of the first welding projection on the reference surface is located in the projection of the welding groove on the reference surface, the reference surface is perpendicular to the axial direction of the current collecting disc, and the bottom wall of the casing is located on the side of the casing facing away from the battery core.

8. The battery of claim 7, wherein the welding recess is annular, the first welding projection is fan-shaped, a projection of the first welding projection on the reference surface is a first projection, a projection of the welding recess on the reference surface is a second projection, and the first projection is located between two end edges of the second projection in a radial direction of the current collecting disk.

9. The battery of claim 1, wherein the end face of the manifold disc facing away from the cell is a second end face, and a peripheral edge of the second end face forms a guide slope, and the guide slope extends obliquely toward a direction close to a central axis of the manifold disc in a direction from the cell toward the bottom wall of the accommodation chamber.

10. The battery of claim 1, wherein an end surface of the current collecting disc facing the bottom wall of the accommodating cavity is provided with first welding protrusions and first stamping grooves arranged at intervals along a circumferential direction of the current collecting disc, an end surface of the current collecting disc facing the battery cell is provided with second welding protrusions and second stamping grooves arranged at intervals along the circumferential direction of the current collecting disc, the first welding protrusions are welded to the bottom wall of the accommodating cavity and are opposite to the second stamping grooves, and the second welding protrusions are welded to the battery cell and are opposite to the first stamping grooves.

11. The cell defined in claim 10, wherein a projection of the first welding projection onto a reference surface coincides with a projection of the second stamped recess onto a reference surface, the second welding projection coincides with a projection of the first stamped recess onto a reference surface, the reference surface being perpendicular to an axial direction of the current collecting disk.

12. The cell defined in any one of claims 1-11, wherein the current collecting tray is a one-time stamped and formed part.

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