CN217086806U - Battery and battery pack - Google Patents
Battery and battery pack Download PDFInfo
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- CN217086806U CN217086806U CN202220956981.7U CN202220956981U CN217086806U CN 217086806 U CN217086806 U CN 217086806U CN 202220956981 U CN202220956981 U CN 202220956981U CN 217086806 U CN217086806 U CN 217086806U
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Abstract
The utility model relates to a battery technology field provides a battery and group battery. The battery includes: a battery case; the pole structure is arranged on the battery shell, at least part of the pole structure is positioned outside the battery shell, and a through hole is formed in the battery shell; the conductive connecting piece comprises a first section and a second section which are connected, the first section is located on the inner side of the battery shell and is electrically connected with the battery shell, and the second section penetrates through the through hole and is electrically connected with a pole structure located on the outer side of the battery shell. The first section of the conductive connecting piece is located on the inner side of the battery shell, the second section of the conductive connecting piece penetrates through the through hole of the battery shell and is electrically connected with the pole structure located on the outer side of the battery shell, so that the pole structure is electrically connected with the battery shell through the conductive connecting piece, the conductive connecting piece can be stably connected onto the battery shell, and the use performance of the battery is improved.
Description
Technical Field
The utility model relates to a battery technology field especially relates to a battery and group battery.
Background
In the correlation technique, the battery includes anodal utmost point post and negative pole utmost point post, and when the battery was used in groups, for the running state of real-time supervision battery, need carry out voltage acquisition through the circuit board, nevertheless because the mode of arranging of anodal utmost point post and negative pole utmost point post limits, the mode of arranging of circuit board is comparatively complicated.
SUMMERY OF THE UTILITY MODEL
The utility model provides a battery and group battery to improve the performance of battery.
According to a first aspect of the present invention, there is provided a battery, comprising:
a battery case;
the pole structure is arranged on the battery shell, at least part of the pole structure is positioned outside the battery shell, and a through hole is formed in the battery shell;
the conductive connecting piece comprises a first section and a second section which are connected, the first section is located on the inner side of the battery shell and is electrically connected with the battery shell, and the second section penetrates through the through hole and is electrically connected with a pole structure located on the outer side of the battery shell.
The utility model discloses the battery includes battery housing, utmost point post structure and electrically conductive connecting piece, and utmost point post structure is connected through electrically conductive connecting piece and battery housing electricity to can make battery housing can regard as a current potential collection structure of battery, with this convenient subsequent connection. And the first section through with electrically conductive connecting piece is located the battery casing inboard, and the second section passes the through-hole of battery casing and is connected with the utmost point post structure electricity that is located the battery casing outside, not only can be so that utmost point post structure is connected with the battery casing electricity through electrically conductive connecting piece to can guarantee that electrically conductive connecting piece connects on battery casing steadily, improve the performance of battery with this.
According to a second aspect of the present invention, there is provided a battery pack comprising the above battery.
The utility model discloses group battery includes the battery, and the battery includes battery housing, utmost point post structure and electrically conductive connecting piece, and utmost point post structure is connected through electrically conductive connecting piece and battery housing electricity to can make battery housing can regard as a current potential collection structure of battery, with this convenient subsequent connection. And the first section through with electrically conductive connecting piece is located the battery casing inboard, and the second section passes the through-hole of battery casing and is connected with the utmost point post structure electricity that is located the battery casing outside, not only can be so that utmost point post structure is connected with the battery casing electricity through electrically conductive connecting piece to can guarantee that electrically conductive connecting piece connects on battery casing steadily, improve the performance of group battery with this.
Drawings
For a better understanding of the present disclosure, reference may be made to the embodiments illustrated in the following drawings. The components in the drawings are not necessarily to scale, and related elements may be omitted in order to emphasize and clearly illustrate the technical features of the present disclosure. In addition, the relevant elements or components may be arranged differently as is known in the art. Further, in the drawings, like reference characters designate the same or similar parts throughout the several views. Wherein:
fig. 1 is a partial structural schematic view of a battery pack according to an exemplary embodiment;
FIG. 2 is a schematic illustration of a partial structure of a battery according to an exemplary embodiment;
FIG. 3 is a partially enlarged schematic view of a battery according to an exemplary embodiment;
fig. 4 is a schematic diagram illustrating a partial cross-sectional structure of a battery according to an exemplary embodiment.
The reference numerals are explained below:
1. a bus bar; 10. a battery case; 11. a first surface; 12. a second surface; 13. recessing; 14. a groove; 15. a through hole; 20. a pole assembly; 21. a connecting surface; 22. a terminal; 221. a support portion; 222. a connecting portion; 24. accommodating grooves; 30. an insulating member; 31. a main body portion; 32. a positioning part; 40. a conductive connection member; 41. a first stage; 411. flanging; 412. a protrusion; 42. a second stage; 50. and a seal.
Detailed Description
The technical solutions in the exemplary embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the exemplary embodiments of the present disclosure. The example embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the present disclosure, and it is, therefore, to be understood that various modifications and changes may be made to the example embodiments without departing from the scope of the present disclosure.
In the description of the present disclosure, unless otherwise explicitly specified or limited, the terms "first", "second", and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more; the term "and/or" includes any and all combinations of one or more of the associated listed items. In particular, reference to "the" object or "an" object is also intended to mean one of many such objects possible.
The terms "connected," "secured," and the like are to be construed broadly and unless otherwise stated or indicated, and for example, "connected" may be a fixed connection, a removable connection, an integral connection, an electrical connection, or a signal connection; "connected" may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present disclosure can be understood by those skilled in the art as the case may be.
Further, in the description of the present disclosure, it is to be understood that the directional words "upper", "lower", "inner", "outer", etc., which are described in the exemplary embodiments of the present disclosure, are described at the angles shown in the drawings, and should not be construed as limiting the exemplary embodiments of the present disclosure. It will also be understood that, in this context, when an element or feature is referred to as being "on", "under", or "inner", "outer" with respect to another element(s), it can be directly on "," under ", or" inner "," outer "with respect to the other element(s), or indirectly on", "under", or "inner", "outer" with respect to the other element(s) via intervening elements.
An embodiment of the present invention provides a battery, please refer to fig. 1 to fig. 4, the battery includes: a battery case 10; the pole structure is arranged on the battery shell 10, at least part of the pole structure is positioned outside the battery shell 10, and a through hole 15 is formed in the battery shell 10; the conductive connecting piece 40, the conductive connecting piece 40 includes the first section 41 and the second section 42 that are connected, the first section 41 is located inside the battery case 10 and is electrically connected with the battery case 10, and the second section 42 is arranged through the through hole 15 and is electrically connected with the pole structure located outside the battery case 10.
The utility model discloses a battery of an embodiment includes battery housing 10, utmost point post structure and electrically conductive connecting piece 40, and utmost point post structure is connected with battery housing 10 electricity through electrically conductive connecting piece 40 to can make battery housing 10 can regard as a current potential collection structure of battery, with this convenient subsequent connection. By positioning the first section 41 of the conductive connecting member 40 inside the battery case 10 and passing the second section 42 through the through hole 15 of the battery case 10 to electrically connect with the post structure outside the battery case 10, the post structure can be electrically connected with the battery case 10 through the conductive connecting member 40, and the conductive connecting member 40 can be stably connected to the battery case 10, thereby improving the service performance of the battery.
It should be noted that the battery may include two post structures, one of them post structure includes the positive pole post, another post structure includes the negative pole post, and the positive pole post can form the electricity with battery case 10 through electrically conductive connecting piece 40 and be connected, and at this moment, battery case 10 and negative pole post can regard as two electric potential collection points of battery to this makes things convenient for follow-up circuit board to be used for gathering the voltage of battery, and after all, each position of battery case 10 all can regard as electric potential collection point. When the positive electrode post is electrically connected to the battery case 10, the negative electrode post is insulated from the battery case 10, and correspondingly, when the negative electrode post is electrically connected to the battery case 10, the positive electrode post is insulated from the battery case 10.
In one embodiment, the conductive connecting member 40 is riveted to the battery case 10, and the conductive connecting member 40 is riveted to the post structure, so that the conductive connecting member 40 can be reliably connected to the battery case 10 and the post structure, and the post structure is electrically connected to the battery case 10 through the conductive connecting member 40.
The conductive connecting member 40 may be a rivet, which may be directly riveted to the battery case 10 and the post structure, and the rivet may be riveted to the battery case 10 and the post structure through deformation of its own structure. Alternatively, the rivet may be driven by other components to deform the rivet structure, thereby achieving the rivet connection with the battery case 10 and the rivet connection with the pole structure. The riveting method is not limited here, and can be selected according to actual requirements, and riveting is to realize connection between components through structural deformation.
In one embodiment, the battery further includes a battery core, and the battery core is electrically connected to the first section 41, that is, the conductive connecting member 40 is based on the electrical connection between the pole assembly 20 and the battery housing 10, and the conductive connecting member 40 may also enable an electrode of the battery core to be led out. The first section 41 of the conductive connection member 40 is electrically connected to a tab of the cell.
The battery includes a cell and an electrolyte, and a minimum unit capable of performing an electrochemical reaction such as charge/discharge. The battery cell refers to a unit formed by winding or laminating a stack including a first electrode, a separator, and a second electrode. When the first electrode is a positive electrode, the second electrode is a negative electrode. Wherein the polarities of the first electrode and the second electrode can be interchanged. The battery core is disposed in the battery casing 10, the pole assembly 20 is electrically connected to the battery core, and a part of the pole assembly 20 may be disposed in the battery casing 10, so as to facilitate the electrical connection of the pole assembly 20 to the battery core, and certainly, in some embodiments, the whole pole assembly 20 is not disposed outside the battery casing 10. The pole assembly 20 and the battery core may be connected through an adaptor sheet, or the pole assembly 20 and the battery core may be directly connected.
Specifically, the cell may be a laminated cell, and the cell has a first electrode, a second electrode opposite to the first electrode, and a diaphragm disposed between the first electrode and the second electrode, which are stacked on top of each other, so that a plurality of pairs of the first electrode and the second electrode are stacked to form the laminated cell.
The battery may also be a wound battery, that is, a first electrode, a second electrode opposite to the first electrode in electrical property, and a diaphragm sheet disposed between the first electrode and the second electrode are wound to obtain a wound battery core.
The battery case 10 may include a first case member and a second case member connected to the first case member to form a receiving space in which the battery cell is disposed, thereby ensuring reliable sealing of the battery cell. The first shell piece and the second shell piece can both form a space, and after the first shell piece and the second shell piece are in butt joint, the battery cell is located in an accommodating space formed by the two spaces. The first housing member and the second housing member may have the same or different spatial depths, and are not limited herein. The first housing member may be a flat plate, and the second housing member forms a space.
In one embodiment, as shown in fig. 4, the first section 41 includes a flange 411 and a protrusion 412, the flange 411 is in contact with the battery case 10, and the protrusion 412 is located on a side of the flange 411 facing away from the battery case 10, so that the flange 411 and the battery case 10 can have a reliable contact surface, and the structure of the battery case 10 is not damaged on the basis of ensuring the flange 411 and the battery case 10 to be in reliable contact.
The arrangement of the protrusion 412 not only can ensure the structural strength of the conductive connecting member 40, but also the protrusion 412 can be used to form an electrical connection with a battery cell, for example, the protrusion 412 can form an electrical connection with a tab of the battery cell through an adapter sheet. Alternatively, the protrusion 412 may be directly electrically connected to a tab of the cell.
In one embodiment, as shown in fig. 4, the conductive connecting member 40 may be composed of a first section 41 and a second section 42, the conductive connecting member 40 may be an integrally formed structure, the first section 41 includes a flange 411 and a protrusion 412, and the second section 42 is not limited in structure, for example, the second section 42 may be a substantially cylindrical body, the cylindrical body may be provided with a recess or the like for connecting with other components, and the protrusion 412 may also be a cylindrical body.
In one embodiment, the pole structure includes a pole assembly 20, the pole assembly 20 is disposed in the battery housing 10, and an insulating structure is disposed between the pole assembly 20 and the battery housing 10, for example, at least one of the pole assembly 20 and the battery housing 10 may be coated with an insulating layer, and the insulating layer may be a coating, such as aluminum oxide (Al) or the like 2 O 3 ) Zirconium oxide (ZrO) 2 ) And the like.
In one embodiment, as shown in fig. 2 to 4, the pole structure further includes: an insulator 30, the insulator 30 being provided to the battery case 10; the pole assembly 20 is disposed on the insulator 30 such that the pole assembly 20 is disposed on the battery housing 10 through the insulator 30, wherein the second section 42 is electrically connected with the pole assembly 20. The insulating member 30 is disposed between the post assembly 20 and the battery housing 10 for direct insulation, and the electrical connection between the second section 42 and the post assembly 20 can ensure that the post assembly 20 is electrically connected to the battery housing 10 through the conductive connecting member 40.
In one embodiment, at least a portion of the second section 42 is disposed in the insulating member 30, so as to ensure that the conductive connecting member 40 can be reliably fixed on the battery case 10, thereby improving the structural stability and avoiding the problems of shaking and the like during use.
In one embodiment, as shown in fig. 4, the second section 42 is electrically connected to the pole assembly 20 through the insulator 30; wherein, a part of the second section 42 is located in the pole assembly 20, so as to ensure that the conductive connecting member 40 and the pole assembly 20 form a reliable contact, ensure that the conductive connecting member 40 and the pole assembly 20 have a reliable overcurrent capacity, and ensure that the conductive connecting member 40 is fixed in the insulating member 30.
In one embodiment, as shown in fig. 4, a groove 14 is provided on a side of the battery housing 10 facing away from the first section 41, the through hole 15 is located in the groove 14, the battery further includes a sealing member 50, the sealing member 50 is located in the groove 14 to seal the battery housing 10 and the conductive connecting member 40, and the second section 42 passes through the sealing member 50 to be electrically connected with the pole assembly 20, so that the sealing member 50 can form a reliable seal for the through hole 15, and also the sealing member 50 can form a certain buffering effect to ensure the connection stability of the structure. The provision of the groove 14 can provide structural reinforcement to the battery case 10.
The sealing element 50 may be a sealing ring, and the sealing element 50 may be a sealant, which is not limited herein and may be selected according to actual requirements.
In one embodiment, the seal member 50 is located between the battery case 10 and the insulating member 30; wherein the sealing member 50 is connected to the insulating member 30, thereby ensuring that the sealing member 50 can be disposed between the battery case 10 and the insulating member 30, thereby ensuring that the sealing member 50 can form a reliable seal against the through-hole 15.
In one embodiment, the sealing member 50 is engaged with the insulating member 30, thereby ensuring that the sealing member 50 is stably coupled with the insulating member 30, thereby ensuring that the sealing member 50 can be disposed between the battery case 10 and the insulating member 30.
The sealing member 50 and the insulating member 30 may be a protrusion and groove fitting structure, for example, the sealing member 50 may have a protrusion and the insulating member 30 may have a groove, or the sealing member 50 may have a groove and the insulating member 30 may have a protrusion. The projection and the groove may be a plurality of realizing fits.
In one embodiment, as shown in fig. 1 to 3, at least a portion of the insulating member 30 is located outside the battery case 10, and the connection surface 21 of the pole assembly 20 for connection with the bus bar 1 is disposed to protrude from the insulating member 30, thereby facilitating reliable connection of the bus bar 1 with the connection surface 21.
In one embodiment, the insulating member 30 is disposed on the battery housing 10 and covers the outer edge of the pole assembly 20, the insulating member 30 is disposed, and the insulating member 30 covers the outer edge of the pole assembly 20, so that the insulating member 30 can fix the pole assembly 20, and since the insulating member 30 is disposed on the battery housing 10, so that the pole assembly 20 can be disposed on the battery housing 10 through the insulating member 30, thereby ensuring that the pole assembly 20 and the insulating member 30 can have a sufficient contact area with the battery housing 10, thereby ensuring that the pole assembly 20 is stably disposed on the battery housing 10, at this time, the cross-sectional area of the pole assembly 20 can be properly reduced, so that the cost is saved, and the weight can be reduced.
It should be noted that the insulating member 30 may be an injection molded member, the insulating member 30 may be made of plastic, and the insulating member 30 may also be made of rubber. The material of the insulating member 30 is not limited thereto.
In one embodiment, the size of the connecting surface 21 protruding the insulating member 30 is not greater than 0.1mm, which can enable the pole assembly 20 and the insulating member 30 to provide enough fixing support for the bus bar 1 on the basis of ensuring the bus bar 1 is reliably connected with the connecting surface 21, thereby ensuring the stability of the bus bar 1.
Busbar 1 and connection surface 21 can weld, and connection surface 21 protrudes insulating part 30's size is not more than 0.1mm for busbar 1 can not produce the rosin joint with connection surface 21, improves welding quality, and can make utmost point post subassembly 20 and insulating part 30 provide the fixed support portion, guarantee the supporting effect.
In some embodiments, the dimension of the connecting surface 21 protruding beyond the insulator 30 may be equal to 0.01mm, 0.02mm, 0.03mm, 0.05mm, 0.08mm, 0.09mm, 0.095mm, or 0.1mm, among others. The connecting surface 21 protrudes from the insulating member 30, so that the connecting surface 21 can be located outside the insulating member 30, thereby facilitating the bus bar 1 to be brought into reliable contact with the connecting surface 21, and ensuring the welding stability of the subsequent bus bar 1 to the connecting surface 21.
In one embodiment, the connection surface 21 is at an angle with respect to the surface of the battery housing 10 on which the pole assembly 20 is disposed, i.e., the connection surface 21 is at an angle with respect to the surface of the battery housing 10 on which the pole assembly 20 is disposed, which is greater than 0 degrees and less than 180 degrees, thereby facilitating the connection of the busbar 1 with the connection surface 21.
In some embodiments, as shown in fig. 2 and 3, the connecting surface 21 is substantially perpendicular to the surface of the battery housing 10 where the pole assembly 20 is disposed, so that when the batteries are grouped, the connection of the bus bar 1 with the connecting surface 21 can be facilitated, and the bus bar 1 is prevented from occupying too much battery grouping space, thereby ensuring the energy density of the battery pack.
It should be noted that the surface of the battery case 10 provided with the pole assembly 20 may be perpendicular to the stacking direction when a plurality of batteries are grouped. The connection surface 21 is substantially perpendicular to the surface of the battery case 10 on which the pole assembly 20 is disposed, and it is important here that the connection surface 21 is perpendicular to the surface of the battery case 10 on which the pole assembly 20 is disposed, regardless of manufacturing errors and mounting errors.
In certain embodiments, it is not excluded that the connection surface 21 is parallel to the surface of the battery housing 10 on which the pole assembly 20 is provided.
In one embodiment, as shown in fig. 2 and 3, the pole assembly 20 is provided with the receiving groove 24, and a portion of the insulating member 30 is located in the receiving groove 24, so that not only the volume of the pole assembly 20 can be reduced, but also the connection stability of the insulating member 30 and the pole assembly 20 can be ensured, thereby ensuring that the insulating member 30 and the pole assembly 20 are stably connected to the battery housing 10.
The receiving groove 24 may be a recess, for example, a recess provided on the side of the pole assembly 20 facing the battery housing 10 and a portion of the insulating member 30 is located in the receiving groove 24, or a recess provided on the side of the pole assembly 20 facing away from the battery housing 10 and a portion of the insulating member 30 is located in the receiving groove 24. The receiving slot 24 may be a notch, as shown in fig. 2, and a portion of the insulating member 30 is located within the receiving slot 24.
It should be noted that, the specific structural form of the receiving groove 24 is not limited herein, and can be selected according to actual requirements, as long as the volume of the pole post assembly 20 can be reduced, and the connection stability of the insulating member 30 and the pole post assembly 20 can be ensured.
In one embodiment, a portion of the insulating member 30 is located between the battery housing 10 and the pole assembly 20, so that the pole assembly 20 can be connected to the battery housing 10 through the insulating member 30 on the basis of ensuring reliable insulation between the battery housing 10 and the pole assembly 20, thereby ensuring that the pole assembly 20 is stably connected to the battery housing 10.
It should be noted that, the whole of the insulating member 30 may be located outside the battery case 10, the insulating member 30 covers the outer edge of the pole assembly 20, so as to ensure the reliable connection between the pole assembly 20 and the insulating member 30, and a part of the insulating member 30 is located between the battery case 10 and the pole assembly 20, so that the insulating member 30 can be reliably connected with the battery case 10, so as to ensure that the pole assembly 20 is stably connected with the battery case 10, so as to avoid the position adjustment of the pole assembly 20 during the use process, so as to ensure the use performance of the battery. Further, a part of the insulating part 30 is located in the accommodating groove 24 of the pole assembly 20, so that the size of the pole assembly 20 can be reduced, and the connection stability between the insulating part 30 and the pole assembly 20 can be further ensured.
In one embodiment, the insulating member 30 is disposed at the outer edge of the non-surrounding pole assembly 20, so that the problem of large volume of the insulating member 30 can be avoided on the basis of ensuring that the insulating member 30 is reliably connected to the pole assembly 20, thereby reducing the weight of the battery as a whole.
As shown in fig. 2 and 3, the insulating member 30 covers most of the outer edge of the pole assembly 20, so as to ensure that the insulating member 30 is reliably connected to the pole assembly 20, while part of the outer edge of the pole assembly 20 is not covered by the insulating member 30, specifically, the outer edge of the top end of the pole assembly 20 is not covered by the insulating member 30, and part of the outer edge of the insulating member 30 covering the connecting surface 21, that is, part of the outer edge of the connecting surface 21 is not covered by the insulating member 30.
In one embodiment, the insulating members 30 cover at least two opposite ends of the pole assembly 20 along the length direction of the connecting surface 21, so that the upper and lower ends of the connecting surface 21 are provided with the insulating members 30, which not only can realize reliable protection of the connecting surface 21, but also can realize positioning of the bus bar 1 by the insulating members 30 at the upper and lower ends of the connecting surface 21 when the bus bar 1 is connected with the connecting surface 21.
The length direction of the connecting surface 21 can be considered as the width direction of the first surface 11, and further, the upper and lower ends of the connecting portion 222 of the pole assembly 20 are covered with the insulating member 30, as shown in fig. 2 and 3.
In one embodiment, as shown in fig. 2 and 3, the insulating member 30 includes: a body portion 31, at least part of the body portion 31 covering the outer edge of the pole assembly 20; the positioning portion 32 and the connecting surface 21 form an included angle therebetween, so that the positioning portion 32 and the connecting surface 21 are in limited contact with the busbar 1, positioning of the busbar 1 is facilitated in a connecting process, connection of the busbar 1 is facilitated, and connection efficiency of the busbar 1 is improved. The positioning parts 32 may be coupled with the battery case 10, thereby improving the coupling stability of the insulating member 30.
As shown in fig. 1, one surface of the bus bar 1 is connected to the connecting surface 21, so as to ensure reliable electrical connection between the bus bar 1 and the post assembly 20, and the other surface of the bus bar 1 is connected to the positioning portion 32, so as to facilitate positioning of the bus bar 1 during connection, so as to ensure that one surface of the bus bar 1 and the connecting surface 21 have reliable contact positions, so as to ensure that a reliable contact surface is provided between the bus bar 1 and the post assembly 20, so as to ensure overcurrent capability of the bus bar 1 and the post assembly 20.
In one embodiment, the positioning portion 32 is substantially perpendicular to the connecting surface 21, and the positioning portion 32 is substantially parallel to the surface of the battery case 10 where the pole assembly 20 is disposed, that is, the connecting surface 21 is substantially perpendicular to the surface of the battery case 10 where the pole assembly 20 is disposed, so that not only the connection of the bus bar 1 with the pole assembly 20 is facilitated, but also the reliable positioning between the bus bar 1 and the insulating member 30 can be ensured, thereby improving the assembling efficiency of the bus bar 1.
As shown in fig. 1 to 3 in conjunction, the positioning portion 32 is provided on the battery case 10, the surface of the positioning portion 32 in contact with the busbar 1 is parallel to the surface of the battery case 10 where the pole assembly 20 is provided, and the connecting surface 21 is perpendicular to the surface of the battery case 10 where the pole assembly 20 is provided, so that one surface of the busbar 1 in contact with the pole assembly 20 and the other surface in contact with the insulator 30 can be made perpendicular.
In one embodiment, as shown in fig. 2 and 3, the pole assembly 20 includes: a terminal 22, at least a portion of the terminal 22 being located outside the battery case 10, an insulator 30 at least partially covering an outer edge of the terminal 22, the terminal 22 including a connection surface 21; the conductive connecting member 40 is connected to the terminal 22. The insulation member 30 covering the outer edge of the terminal 22 can ensure reliable fixation of the pole assembly 20, and at least a portion of the conductive connecting member 40 connected to the terminal 22 is located inside the battery case 10, thereby facilitating the conductive connecting member 40 to be electrically connected to the battery cell.
The number of the conductive connecting members 40 may be at least two, and as shown in fig. 2, the number of the conductive connecting members 40 may be two, two conductive connecting members 40 are disposed on the terminal 22 at intervals, the terminal 22 is provided with the receiving groove 24, and a portion of the insulating member 30 is located in the receiving groove 24, so as to ensure that the insulating member 30 reliably fixes the terminal 22.
In one embodiment, as shown in fig. 2 and 3, the terminal 22 includes: a support part 221, wherein the support part 221 is arranged on the battery shell 10 through an insulating piece 30, and the conductive connecting piece 40 is connected with the support part 221; a connection portion 222, the connection portion 222 being connected to the support portion 221, the connection portion 222 being provided to the battery case 10 through the insulating member 30, the connection portion 222 including a connection surface 21; the included angle is formed between the supporting portion 221 and the connecting portion 222, the supporting portion 221 can be reliably fixed on the battery case 10, and the included angle is formed between the supporting portion 221 and the connecting portion 222, so that the bus bar 1 can be reliably connected with the connecting portion 222.
It should be noted that an included angle is formed between the supporting portion 221 and the connecting portion 222, that is, an included angle greater than 0 and smaller than 180 degrees is formed between the supporting portion 221 and the connecting portion 222. The supporting portion 221 and the connecting portion 222 may be substantially perpendicular, the insulating member 30 covers the outer edges of the supporting portion 221 and the connecting portion 222, and the positioning portion 32 and the supporting portion 221 are respectively located at two sides of the connecting portion 222, as shown in fig. 3.
The conductive connecting member 40 is electrically connected to the battery cell, and the conductive connecting member 40 is electrically connected to the battery cell, based on the electrical connection between the battery case 10 and the terminal 22.
In one embodiment, as shown in fig. 2, the battery case 10 includes two opposite first surfaces 11 and four second surfaces 12 disposed around the first surfaces 11, i.e. the battery case 10 has an approximately rectangular structure, the area of the first surface 11 is larger than that of the second surfaces 12, and the pole structure is disposed on the first surface 11. Specifically, the pole assembly 20 is disposed on the first surface 11, and the insulating member 30 is disposed on the first surface 11 and covers the outer edge of the pole assembly 20, so that the pole assembly 20 can be ensured to have a reliable supporting surface, thereby ensuring the stability of the pole assembly 20.
It should be noted that the two opposite first surfaces 11 are large surfaces of the battery case 10, the four second surfaces 12 are small surfaces of the battery case 10, the four second surfaces 12 include two pairs of small surfaces, i.e., a first pair of small surfaces extending along the length direction of the battery case 10, and a second pair of small surfaces extending along the width direction of the battery case 10, and the areas of the first pair of small surfaces are larger than the areas of the second pair of small surfaces, but smaller than the areas of the large surfaces.
In certain embodiments, it is not excluded that the pole assembly 20 may be disposed on the second surface 12.
In some embodiments, there are two pole assemblies 20, two pole assemblies 20 are a positive pole assembly and a negative pole assembly, respectively, there are two tabs of the battery cell, the two tabs are a positive tab and a negative tab, respectively, the positive pole assembly is connected with the positive tab, and the negative pole assembly is connected with the negative tab.
As shown in fig. 1 and 2, the battery case 10 may be provided with two recesses 13, and the two recesses 13 and the two pole assemblies 20 may be respectively located on two opposite surfaces of the battery case 10. At this time, when the batteries are grouped, the pole assembly 20 of another battery can be received in the recess 13, thereby increasing the energy density of the battery pack.
In certain embodiments, it is not excluded that the pole assembly 20 of the battery may be disposed within the recess 13 of the battery.
The pole assembly 20 can be disposed at the end of the battery case 10 for convenient connection and full utilization of the length and space of the battery. The two pole assemblies 20 may be disposed on the same surface of the battery case 10, or the two pole assemblies 20 may be disposed on both surfaces of the battery case 10.
The battery case 10 may have a substantially rectangular structure, that is, the battery case 10 may have a rectangular structure in consideration of manufacturing tolerances.
An embodiment of the utility model also provides a group battery, including foretell battery.
The utility model discloses a group battery of embodiment includes the battery, and the battery includes battery housing 10, utmost point post structure and electrically conductive connecting piece 40, and utmost point post structure is connected with battery housing 10 electricity through electrically conductive connecting piece 40 to can make battery housing 10 can regard as a current potential collection structure of battery, with this convenient subsequent connection. By positioning the first section 41 of the conductive connecting member 40 inside the battery case 10 and the second section 42 passing through the through hole 15 of the battery case 10 to electrically connect with the post structure outside the battery case 10, the post structure can be electrically connected with the battery case 10 through the conductive connecting member 40, and the conductive connecting member 40 can be stably connected to the battery case 10, thereby improving the performance of the battery pack.
In one embodiment, the battery pack may include at least two cells, with the buss bar 1 connecting two pole assemblies 20 of two adjacent cells, as shown in fig. 1. The respective cells are arranged in sequence, and further, the first surfaces 11 of the adjacent cells are arranged to face each other so that the stacking direction of the cells is perpendicular to the first surfaces 11.
The busbar 1 is connected with the pole assemblies 20 of two adjacent batteries, the connecting surface 21 of the pole assembly 20 is slightly parallel to the end surfaces of the batteries so as to be connected with the busbar 1, namely the connecting surface 21 can be parallel to one second surface 12 of the battery, so that the busbar 1 and the pole assemblies 20 are conveniently connected, and the space utilization rate is high. The busbar 1 may be of a generally U-shaped configuration to facilitate connection to the two-cell pole assembly 20, as shown in figure 2.
In one embodiment, the insulator 30 includes: the main body part 31 and the positioning part 32, the bus bar 1 is in limit contact with the positioning part 32, so that the bus bar 1 can be conveniently positioned in the connection process, the bus bar 1 is conveniently connected, the connection efficiency of the bus bar 1 is improved, and the positioning part 32 can improve the connection stability of the insulating part 30 and the battery shell 10. The battery pack is a battery module or a battery pack.
The battery module includes a plurality of batteries, and the battery module may further include an end plate and a side plate for fixing the plurality of batteries.
The battery pack may include a battery case, and the plurality of batteries may be disposed in the battery case. A plurality of batteries can set up in the battery box after forming battery module, and a plurality of batteries can be fixed through end plate and curb plate. A plurality of batteries can directly set up in the battery box, need not to pack a plurality of batteries promptly, and at this moment, can get rid of end plate and curb plate.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the invention 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 example embodiments be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (10)
1. A battery, comprising:
a battery case (10);
the pole structure is arranged on the battery shell (10), at least part of the pole structure is positioned on the outer side of the battery shell (10), and a through hole (15) is formed in the battery shell (10);
the conductive connecting piece (40), the conductive connecting piece (40) is including first section (41) and second section (42) that are connected, first section (41) are located battery housing (10) are inboard, and with battery housing (10) electricity is connected, second section (42) wear to locate through-hole (15), and with be located the battery housing (10) outside the utmost point post structure electricity is connected.
2. The battery according to claim 1, characterized in that the first section (41) comprises a flange (411) and a protrusion (412), the flange (411) being in contact with the battery housing (10), the protrusion (412) being located on the side of the flange (411) facing away from the battery housing (10).
3. The battery of claim 1 or 2, wherein the pole structure comprises:
an insulator (30), the insulator (30) being provided to the battery case (10);
a pole assembly (20), the pole assembly (20) being disposed on the insulator (30) such that the pole assembly (20) is disposed on the battery case (10) through the insulator (30);
wherein the second section (42) is electrically connected with the pole assembly (20).
4. The battery according to claim 3, wherein at least a portion of the second segment (42) is disposed within the insulator (30).
5. The battery according to claim 4, wherein the second section (42) is electrically connected to the pole assembly (20) through the insulator (30);
wherein a portion of the second section (42) is located within the pole assembly (20).
6. The battery according to claim 3, characterized in that the side of the battery housing (10) facing away from the first section (41) is provided with a groove (14), the through hole (15) being located in the groove (14), the battery further comprising a sealing member (50), the sealing member (50) being located in the groove (14) to seal the battery housing (10) and the electrically conductive connecting member (40), the second section (42) being electrically connected to the pole assembly (20) through the sealing member (50).
7. The battery according to claim 6, wherein the seal (50) is located between the battery case (10) and the insulating member (30);
wherein the sealing element (50) is connected to the insulating element (30).
8. The battery according to claim 7, wherein the sealing member (50) is snap-fitted to the insulating member (30).
9. The battery according to claim 1, further comprising a cell electrically connected to the first segment (41).
10. A battery pack characterized by comprising the battery according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220956981.7U CN217086806U (en) | 2022-04-22 | 2022-04-22 | Battery and battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220956981.7U CN217086806U (en) | 2022-04-22 | 2022-04-22 | Battery and battery pack |
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| Publication Number | Publication Date |
|---|---|
| CN217086806U true CN217086806U (en) | 2022-07-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220956981.7U Active CN217086806U (en) | 2022-04-22 | 2022-04-22 | Battery and battery pack |
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| CN (1) | CN217086806U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024000506A1 (en) * | 2022-06-30 | 2024-01-04 | 宁德时代新能源科技股份有限公司 | Battery cell, battery, and electrical device |
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2022
- 2022-04-22 CN CN202220956981.7U patent/CN217086806U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024000506A1 (en) * | 2022-06-30 | 2024-01-04 | 宁德时代新能源科技股份有限公司 | Battery cell, battery, and electrical device |
| WO2024001058A1 (en) * | 2022-06-30 | 2024-01-04 | 宁德时代新能源科技股份有限公司 | Battery cell, battery and electric apparatus |
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