CN216529236U - Connecting terminal and electric core of electric core - Google Patents

Abstract

The utility model provides a connecting terminal of a battery cell and the battery cell, wherein the connecting terminal of the battery cell comprises: a pole connecting section; the first pole lug connecting section is connected with the pole connecting section and connected with a pole lug of the naked battery cell, and the first pole lug connecting section is a first straight plate section; first utmost point ear cooperation section is connected and with the utmost point ear butt of naked electric core with first utmost point ear linkage segment, and first utmost point ear cooperation section is a cambered plate section. By applying the technical scheme of the utility model, the problem that the electrode lug of the battery cell is easy to damage in the related technology can be effectively solved.

Description

Connecting terminal and electric core of electric core

Technical Field

The utility model relates to the field of power batteries, in particular to a connecting terminal of a battery cell and the battery cell.

Background

At present, the electric core of the electric automobile generally adopts an assembly mode of a T structure, namely two connecting terminals are led out from a top cover of the electric core, and the connecting terminals are electrically connected with the pole lugs of a naked electric core. The advantage of this kind of connected mode is, the internal resistance of electricity core is low, and the temperature rise is low under the condition of high multiplying power charge-discharge. But with the following problems: naked electric core relies on utmost point ear to fix on connecting terminal completely, produces vibration or receives under the condition of impact at whole battery module, and connecting terminal is out of shape easily, and then leads to naked electric core drunkenness space grow. If the positive plate and the negative plate of naked electric core take place the dislocation easily if the play space grow of naked electric core on electric core length direction. If naked electric core takes place the drunkenness then leads to utmost point ear fracture or direct fracture easily in the width direction of electric core, leads to the electric capacity of electricity decline or direct inefficacy of electric core. In addition, in the assembling process of the battery cell and the shaping process of the tab, the tab can move irregularly, the inner end part of the connecting terminal easily damages the tab, and the defective rate of the battery cell is increased.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a connecting terminal of a battery cell and the battery cell, so as to solve the problem that a tab of the battery cell is easily damaged in the related art.

In order to achieve the above object, according to one aspect of the present invention, there is provided a connection terminal of a battery cell, the connection terminal including: a pole connecting section; the first tab connecting section is connected with the pole connecting section and connected with a tab of the naked electric core, and the first tab connecting section is a first straight plate section; first utmost point ear cooperation section is connected and with the utmost point ear butt of naked electric core with first utmost point ear linkage segment, and first utmost point ear cooperation section is first arc plate section.

Furtherly, naked electric core includes first naked electric core and the naked electric core of second, and first utmost point ear linkage segment is connected with the utmost point ear of first naked electric core, and first utmost point ear cooperation section and the utmost point ear butt of first naked electric core, connecting terminal still include: the second pole lug connecting section is connected with the pole connecting section and connected with a pole lug of the second naked electric core, and the second pole lug connecting section is a second straight plate section; the second utmost point ear cooperation section is connected and is connected with the second utmost point ear linkage segment and with the utmost point ear butt of the naked electric core of second, and second utmost point ear cooperation section is second arc plate section.

Further, the angle of the central angle corresponding to the first arc-shaped plate section is greater than or equal to 90 degrees; the angle of the central angle corresponding to the second arc-shaped plate section is greater than or equal to 90 degrees.

Furthermore, utmost point post linkage segment is the bending plate, and utmost point post linkage segment includes the first connecting plate with utmost point post electric connection and the second connecting plate that is the angle setting with first connecting plate, first utmost point ear linkage segment setting in one side of second connecting plate and with the second connecting plate between have the contained angle, second utmost point ear linkage segment setting in the opposite side of second connecting plate.

According to another aspect of the present invention, there is provided a battery cell, including: a housing having an accommodating chamber and an opening communicating with the accommodating chamber; the top cover is covered on the opening of the shell and provided with a plurality of polar columns; the connecting terminals are arranged in the accommodating cavity and are in one-to-one correspondence with the pole columns, the connecting terminals are the connecting terminals, and the first pole lug matching section of each connecting terminal is positioned at the inner end part of the first pole lug connecting section; the first naked electric core is arranged in the accommodating cavity; wherein, the utmost point post linkage segment and the utmost point post of connecting terminal are connected, and first utmost point ear linkage segment is connected with the utmost point ear of first naked electric core, the utmost point ear butt of first utmost point ear cooperation section and first naked electric core.

According to another aspect of the present invention, there is provided a battery cell, including: a housing having an accommodating chamber and an opening communicating with the accommodating chamber; the top cover is covered on the opening of the shell and provided with a plurality of polar columns; the connecting terminals are arranged in the accommodating cavity and are in one-to-one correspondence with the pole columns, the connecting terminals are the connecting terminals, the first pole lug matching section of each connecting terminal is positioned at the inner end part of the first pole lug connecting section, and the second pole lug matching section of each connecting terminal is positioned at the inner end part of the second pole lug connecting section; the first bare cell and the second bare cell are arranged in the accommodating cavity and are arranged oppositely; wherein, the utmost point post linkage segment and the utmost point post of connecting terminal are connected, and first utmost point ear linkage segment is connected with the utmost point ear of first naked electric core, and first utmost point ear cooperation section is connected with the utmost point ear butt of first naked electric core, and the utmost point ear linkage segment is connected with the utmost point ear of the naked electric core of second, and the utmost point ear cooperation section is connected with the utmost point ear butt of the naked electric core of second.

Further, the battery cell also comprises: insulating cover sets up in holding the intracavity, and insulating cover is including setting up in the drain pan of the naked electric core below of first naked electric core and second and enclosing the side shell of locating first naked electric core, the naked electric core of second and connecting terminal circumference outside, and the side shell link up the setting from top to bottom, and the drain pan includes the bottom plate and the bounding wall of being connected with the bottom plate, inlays the cover and sets up in the side shell, and the bottom plate is the arc that sets up down, and the cross section of arc is the high structure of low both sides in the middle of the arc.

Further, connecting terminal still includes the backup pad, and the backup pad setting is between first utmost point ear linkage segment and second utmost point ear linkage segment, and the backup pad is located the one end of keeping away from utmost point post linkage segment of first utmost point ear linkage segment and second utmost point ear linkage segment, and the bounding wall includes first end plate and second end plate, is provided with first buckle on the inner wall of first end plate, is provided with the second buckle on the inner wall of second end plate, the lower surface butt of first buckle and second buckle and the upper surface of backup pad.

Further, the coaming includes first end plate, second end plate, first curb plate and second curb plate, and first curb plate and second curb plate all are located between first end plate and the second end plate, are provided with the first breach of upwards opening on the first curb plate, and the length of first breach and the length ratio of first curb plate are between 0.5 to 0.95, are provided with the second breach of upwards opening on the second curb plate, and the length of second breach and the length ratio of second curb plate are between 0.6 to 0.95.

Further, the coaming comprises a first end plate and a second end plate, protruding structures protruding outwards are arranged on the outer surface of the first end plate and the outer surface of the second end plate, the outer end faces of the protruding structures comprise vertical faces and guide inclined faces located below the vertical faces, and the guide inclined faces are gradually inclined inwards in the direction from top to bottom.

By applying the technical scheme, the connecting terminal comprises a pole connecting section, a first pole lug connecting section arranged on the pole connecting section and a first pole lug matching section arranged on the first pole lug connecting section. Wherein, utmost point post linkage segment is used for being connected with utmost point post, and first utmost point ear linkage segment can weld with the utmost point ear of naked electric core, makes the electric current can follow utmost point ear flow direction first utmost point ear linkage segment, finally flows to utmost point post through utmost point post linkage segment. First utmost point ear cooperation section be with utmost point ear butt complex first arc plate section, after utmost point ear welding is on first utmost point ear linkage segment, can carry out the plastic to utmost point ear, make utmost point ear and the laminating of first arc plate section, first arc plate section is big and the contact surface smooth with the area of contact of utmost point ear, when battery module production vibration or when receiving the impact, first arc plate section can not cause the damage to utmost point ear, has promoted the life of electric core. In addition, the first arc-shaped plate section can support the lug in the width direction of the battery cell, so that the probability of the lug shifting in the width direction of the battery cell is reduced, and the probability of the lug cracking is reduced. Simultaneously, first utmost point ear linkage segment is first straight plate section, and first utmost point ear cooperation section is the first arc plate section of connection on first straight plate section, and the structural strength of first utmost point ear linkage segment and first utmost point ear cooperation section can be strengthened to this kind of connected mode that straight board and arc are connected, has reduced connecting terminal and has taken place the probability of deformation, has further reduced the probability that naked electric core takes place the drunkenness to the life of electric core has been promoted.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:

fig. 1 shows a schematic perspective view of an angle of an embodiment of a connection terminal of a battery cell according to the present invention;

fig. 2 shows a schematic perspective view of another angle of the connection terminal of fig. 1;

fig. 3 shows a schematic view of a split structure of an embodiment of a cell according to the utility model;

fig. 4 shows a schematic cross-sectional view of the cell of fig. 3

Fig. 5 shows an enlarged schematic view of the cell of fig. 4 at a;

fig. 6 is a schematic perspective view of a partial structure of the battery cell of fig. 3;

fig. 7 shows a schematic perspective view of an embodiment of a bottom shell of the battery cell of fig. 3;

fig. 8 shows a schematic perspective view of another embodiment of a bottom shell of the battery cell of fig. 3;

fig. 9 shows an enlarged schematic structure of the bottom case B of the battery cell of fig. 7.

Wherein the figures include the following reference numerals:

10. a connection terminal; 11. a pole connecting section; 111. a first connecting plate; 112. a second connecting plate; 12. a first tab connection section; 13. a first tab mating section; 14. a second tab connection section; 15. a second lug mating section; 16. a support plate; 20. a housing; 21. an opening; 30. a top cover; 40. a pole column; 50. a first bare cell; 60. a second bare cell; 70. an insulating sleeve; 71. A bottom case; 712. enclosing plates; 711. a base plate; 712. enclosing plates; 7121. a first end plate; 7122. a second end plate; 7123. a first side plate; 7124. a second side plate; 72. a side casing; 73. a first buckle; 74. a second buckle; 75. a raised structure; 76. a first notch; 77. a second notch.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

As shown in fig. 1, 2, 4, and 5, the connection terminal of the battery cell of the present application includes: the pole connecting section 11, the first tab connecting section 12 and the first tab matching section 13. The first tab connecting section 12 is connected with the pole connecting section 11 and is connected with a tab of a bare cell, and the first tab connecting section 12 is a first straight plate section; first utmost point ear cooperation section 13 is connected and with the utmost point ear butt of naked electric core with first utmost point ear linkage segment 12, and first utmost point ear cooperation section 13 is first arc board section.

Use the technical scheme of this embodiment, the connecting terminal of this application includes utmost point post linkage segment 11, sets up first utmost point ear linkage segment 12 on utmost point post linkage segment 11 and sets up first utmost point ear cooperation section 13 on first utmost point ear linkage segment 12. Wherein, utmost point post linkage segment 11 is used for being connected with utmost point post, and first utmost point ear linkage segment 12 can weld with the utmost point ear of naked electric core, makes electric current can follow utmost point ear flow direction first utmost point ear linkage segment 12, finally flows to utmost point post through utmost point post linkage segment 11. First utmost point ear cooperation section 13 is for the first arc plate section with utmost point ear butt complex, and after utmost point ear welding was on first utmost point ear linkage segment 12, can carry out the plastic to utmost point ear, makes utmost point ear and the laminating of first arc plate section, and first arc plate section is big and the contact surface smooth with the area of contact of utmost point ear, and when battery module produced the vibration or received the impact, first arc plate section can not cause the damage to utmost point ear, has promoted the life of electric core. In addition, the first arc-shaped plate section can support the lug in the width direction of the battery cell, so that the probability of the lug shifting in the width direction of the battery cell is reduced, and the probability of the lug cracking is reduced. Meanwhile, the first tab connection section 12 is a first straight plate section, the first tab matching section 13 is a first arc-shaped plate section connected to the first straight plate section, the structural strength of the first tab connection section 12 and the structural strength of the first tab matching section 13 can be enhanced by the connection mode of the straight plate and the arc-shaped plate, the probability of deformation of the connection terminal is reduced, the probability of play of a naked battery cell is further reduced, and therefore the service life of the battery cell is prolonged.

It should be noted that the pole connecting section 11 and the first tab connecting section 12 may be an integrally formed structure, and the pole connecting section 11 and the first tab connecting section 12 may also be connected by welding or the like, so that only the electrical conductivity between the pole connecting section 11 and the first tab connecting section 12 needs to be ensured. The first tab connection section 12 and the first tab matching section 13 may be integrally formed, or may be connected by welding or the like, and only the electrical conductivity between the first tab connection section 12 and the first tab matching section 13 needs to be ensured.

As shown in fig. 1, fig. 2, fig. 4 and fig. 5, in this embodiment, naked electric core includes naked electric core of first naked electric core and second electricity, and first utmost point ear linkage segment 12 is connected with the utmost point ear of naked electric core, and first utmost point ear cooperation section 13 and the utmost point ear butt of naked electric core, connecting terminal still include: a second lug connection section 14 and a second lug mating section 15. The second pole lug connecting section 14 is connected with the pole connecting section 11 and connected with a pole lug of a second bare cell, and the second pole lug connecting section 14 is a second straight plate section; second utmost point ear cooperation section 15 is connected and is connected with second utmost point ear linkage segment 14 and with the utmost point ear butt of the naked electric core of second, and second utmost point ear cooperation section 15 is second arc plate section. Specifically, in this embodiment, including the naked electric core of first naked electric core and the naked electric core of second in the electric core, first utmost point ear linkage segment 12 is used for being connected with the utmost point ear of the naked electric core of first, and first utmost point ear cooperation section 13 can support and the plastic with the utmost point ear butt cooperation of the naked electric core of first, to the utmost point ear of the naked electric core of first. Second utmost point ear linkage segment 14 is used for and connects with the utmost point ear of the naked electric core of second, and second utmost point ear cooperation section 15 can support and the plastic to the utmost point ear of the naked electric core of second. Above-mentioned structure makes when including two naked electric cores in the electric core, and connecting terminal can connect the effect that all plays support, spacing and plastic to two naked electric cores to the life of electric core has been promoted.

It should be noted that, when only one bare cell is disposed in the cell, the connection terminal may only include the pole connection section 11, the first tab connection section 12, and the first tab matching section 13. First utmost point ear linkage segment 12 and utmost point ear welding, first utmost point ear cooperation section 13 and utmost point ear butt, the utmost point ear forms the support and is convenient for carry out the plastic to utmost point ear simultaneously. Of course, under the condition that only there is a naked electric core in the electric core, connecting terminal also can include whole utmost point post linkage segment 11, first utmost point ear linkage segment 12, first utmost point ear cooperation section 13, second utmost point ear linkage segment 14 and second utmost point ear cooperation section 15, connecting terminal this moment though can connect two naked electric cores, but also can be with second utmost point ear linkage segment 14 and the empty of second utmost point ear cooperation section 15, only rely on first utmost point ear linkage segment 12 and first utmost point ear cooperation section 13 to be connected and cooperate with naked electric core.

Still need explain be, when setting up more than three naked electric core in the electric core, can increase the quantity of utmost point ear cooperation section and utmost point ear linkage segment to the more naked electric core of adaptation.

As shown in fig. 1, 2 and 5, in the present embodiment, the angle of the central angle corresponding to the first arc-shaped plate segment is equal to 90 °; the angle of the central angle corresponding to the second arc-shaped plate section is equal to 90 degrees. In the structure, the angle of the central angle corresponding to the first arc-shaped plate section is equal to 90 degrees, so that the abutting area of the lug of the first arc-shaped plate section and the first naked battery cell can be increased, and the damage to the lug caused by the first arc-shaped plate section when the battery module vibrates or is impacted is avoided. Accordingly, the same effect can be achieved by making the central angle of the second arc-shaped plate segment equal to 90 °.

Of course, in other embodiments not shown in the drawings, the angle of the central angle corresponding to the first arc-shaped plate segment may be greater than 90 °. Correspondingly, the angle of the central angle corresponding to the second arc-shaped plate section can be larger than 90 degrees.

Specifically, as shown in fig. 1 and fig. 2, in the present embodiment, the pole connecting section 11 is a bent plate, the pole connecting section 11 includes a first connecting plate 111 electrically connected to the pole and a second connecting plate 112 disposed at an angle to the first connecting plate 111, the first tab connecting section 12 is disposed on one side of the second connecting plate 112 and has an included angle with the second connecting plate 112, and the second tab connecting section 14 is disposed on the other side of the second connecting plate 112. In the above structure, the pole connecting section 11, the first tab connecting section 12 and the second tab connecting section 14 are integrally formed. The angle between the first connection plate 111 and the second connection plate 112 is 90 °, the first tab connection section 12 is disposed on the side wall of the second connection plate 112 and forms an angle of 90 ° with the second connection plate 112, correspondingly, the second tab connection section 14 is disposed on the side wall of the other side of the second connection plate 112, and the first tab connection section 12 is disposed opposite to the second tab connection section 14. The structure is convenient for processing and forming the connecting terminal.

Note that, the thickness of each portion of the connection terminal 10 of the present embodiment may be the same, and it is also conceivable to increase the thickness at a position where stress is large. For example, the thickness of the end of the first tab connecting section 12 connected to the pole connecting section 11 can be increased to improve the strength of the connecting terminal, thereby further reducing the probability of deformation of the connecting terminal. Accordingly, the end of the second pole lug connection section 14 connected to the pole connection section 11 may be increased in thickness.

The application further provides a battery cell, and the battery cell of the first embodiment includes: casing 20, top cap 30, a plurality of connecting terminal 10 and first naked electric core 50. Wherein the housing 20 has an accommodating chamber and an opening 21 communicating with the accommodating chamber; the top cover 30 is arranged on the opening 21 of the shell 20 in a covering manner, and a plurality of poles 40 are arranged on the top cover 30; the plurality of connecting terminals 10 are arranged in the accommodating cavity and are in one-to-one correspondence with the plurality of poles 40, the connecting terminals 10 are the connecting terminals, and the first tab matching section 13 of the connecting terminals 10 is positioned at the inner end part of the first tab connecting section 12; the first bare cell 50 is disposed in the accommodating cavity; wherein, the utmost point post linkage segment 11 and the utmost point post 40 of connecting terminal 10 are connected, and the first utmost point ear linkage segment 12 and the utmost point ear of first naked electric core 50 of connecting terminal 10 are connected, first utmost point ear cooperation section 13 and the utmost point ear butt of first naked electric core 50.

In the above-mentioned structure, only include a naked electric core in the electric core and first naked electric core 50. The connection terminal 10 includes: a first tab connection section 12 and a first tab fitting section 13. Wherein, first utmost point ear cooperation section 13 is for the first arc plate section with utmost point ear butt complex, and after utmost point ear welding was on first utmost point ear linkage segment 12, can carry out the plastic to utmost point ear, makes utmost point ear and the laminating of first arc plate section, and first arc plate section is big and the contact surface smooth with the area of contact of utmost point ear, and when battery module produced vibration or received the impact, first arc plate section can not cause the damage to utmost point ear, has promoted the life of electric core. In addition, the first arc-shaped plate section can support the lug in the width direction of the battery cell, so that the probability of the lug shifting in the width direction of the battery cell is reduced, and the probability of the lug cracking is reduced. Meanwhile, the first tab connection section 12 is a first straight plate section, the first tab matching section 13 is a first arc-shaped plate section connected to the first straight plate section, the structural strength of the first tab connection section 12 and the structural strength of the first tab matching section 13 can be enhanced by the connection mode of the straight plate and the arc-shaped plate, the probability of deformation of the connection terminal is reduced, the probability of play of a naked battery cell is further reduced, and therefore the service life of the battery cell is prolonged.

As shown in fig. 3 to 6, the battery cell of the second embodiment is different from the battery cell of the first embodiment in that: the number of bare cells in the cell core of the second embodiment is different from that of the first embodiment, and the structure of the connection terminal is also different from that of the first embodiment. Specifically, the connection terminal 10 of the second embodiment includes a pole connection section 11, a first tab connection section 12, a first tab fitting section 13, a second tab connection section 14, and a second tab fitting section 15. Still include the naked electric core of first naked electric core and second in the electric core, first utmost point ear linkage segment 12 is used for being connected with the utmost point ear of the naked electric core of first, and first utmost point ear cooperation section 13 can support and the plastic with the utmost point ear butt cooperation of the naked electric core of first, to the utmost point ear of the naked electric core of first. Second utmost point ear linkage segment 14 is used for and connects with the utmost point ear of the naked electric core of second, and second utmost point ear cooperation section 15 can support and the plastic to the utmost point ear of the naked electric core of second. Above-mentioned structure makes when including two naked electric cores in the electric core, and connecting terminal can connect the effect that all plays support, spacing and plastic to two naked electric cores to the life of electric core has been promoted.

The inside insulating cover that all need set up of present electric core wraps up naked electric core to avoid the metal casing of naked electric core and electric core to be even electrified. But utility model people discover in long-term research that traditional insulating cover bottom was scraped with metal casing easily when packing into in the shell of electric core, leads to insulating cover to produce the damage, leads to naked electric core and metal casing to take place the phenomenon of even electricity. On the other hand, traditional insulating cover bottom is the design of rectangle cornerite, and the vacant amount between its and the utmost point ear of naked electric core is great for naked electric core takes place the drunkenness easily. In order to solve the above problem, as shown in fig. 3 and fig. 7, in this embodiment, the battery cell further includes an insulating sleeve 70, the insulating sleeve 70 is disposed in the accommodating cavity, the insulating sleeve 70 includes a bottom shell 71 disposed below the first bare cell 50 and the second bare cell 60 and a side shell 72 surrounding the first bare cell 50, the second bare cell 60 and the connection terminal 10, the side shell 72 is disposed to penetrate through the bottom shell 71, the bottom shell 71 includes a bottom plate 711 and a surrounding plate 712 connected to the bottom plate 711, the surrounding plate 712 is embedded in the side shell 72, the bottom plate 711 is an arc-shaped plate protruding downward, and the cross section of the arc-shaped plate is a structure with a middle part and two sides being high. In the above-mentioned structure, side shell 72 can wrap up the circumference outside of first naked electric core 50, the naked electric core 60 of second, and drain pan 71 can wrap up the bottom of first naked electric core 50 and the naked electric core 60 of second, and the bounding wall 712 of drain pan 71 and the nested setting of side shell 72 to form tight parcel to the naked electric core 60 of first naked electric core 50 and second, avoid the utmost point ear of first naked electric core 50 and the utmost point ear of the naked electric core 60 of second and the casing 20 contact of metal material. In addition, the bottom plate 711 is an arc-shaped plate protruding downwards, the cross section of the arc-shaped plate is of a structure with a low middle part and two high sides, and the structure enables the insulating sleeve 70 to play a guiding role when being installed in the shell 20, so that the probability that the insulating sleeve 70 is scratched is greatly reduced. Simultaneously, the lower tip of the utmost point ear of first naked electric core 50 and the utmost point ear of the naked electric core 60 of second also is the arc structure of protruding the setting down, and the radian adaptation of tip under the radian of bottom plate 711 and the utmost point ear has further restricted the activity space of the utmost point ear of first naked electric core 50 and the utmost point ear of the naked electric core 60 of second to telecommunication's life has been prolonged.

It should be noted that the thickness of the insulating sheath 70 is between 0.1mm and 2.0mm, and more preferably, the thickness of the insulating sheath 70 is between 0.3mm and 0.8 mm.

The bottom plate 711 is provided with a plurality of through holes for allowing the electrolyte to flow therethrough.

As shown in fig. 1, 3, and 7, in the present embodiment, the bottom case 71 is snap-fitted to the connection terminal 10, and the side case 72 is provided around the circumferential outer side of the bottom case 71. In the above-mentioned structure, drain pan 71 and connecting terminal 10 joint can promote the stability of being connected of drain pan 71 to make drain pan 71 can wrap up the bottom of first naked electric core 50 and the naked electric core 60 of second.

As shown in fig. 1, 2 and 7, in this embodiment, the connection terminal 10 further includes a support plate 16, the support plate 16 is disposed between the first tab connection section 12 and the second tab connection section 14, the support plate 16 is located at one end of the first tab connection section 12 and the second tab connection section 14, which is far away from the terminal connection section 11, the enclosure plate 712 includes a first end plate 7121 and a second end plate 7122, a first buckle 73 is disposed on an inner wall of the first end plate 7121, a second buckle 74 is disposed on an inner wall of the second end plate 7122, and lower surfaces of the first buckle 73 and the second buckle 74 abut against an upper surface of the support plate 16. In the above structure, the supporting plate 16 can support the first tab connecting section 12 and the second tab connecting section 14, and prevent the deformation caused by the mutual approach of the ends of the first tab connecting section 12 and the second tab connecting section 14 far away from the tab connecting section 11. In addition, the enclosing plate 712 of the bottom case 71 includes a first end plate 7121 and a second end plate 7122, a first buckle 73 is disposed on the first end plate 7121, a second buckle 74 is disposed on the second end plate 7122, and the first buckle 73 and the second buckle 74 can be respectively clamped with the support plates 16 on the two connection terminals, so that the bottom case 71 can be mounted on the connection terminals, and the connection stability of the bottom case 71 is improved.

As shown in fig. 7, in the present embodiment, the enclosing plate 712 includes a first end plate 7121, a second end plate 7122, a first side plate 7123 and a second end plate 7124, the first end plate 7121 and the second end plate 7122 are both located between the first end plate 7121 and the second end plate 7124, a first notch 76 which is open upward is disposed on the first side plate 7123, a length ratio of the first notch 76 to the first end plate 7123 is between 0.5 and 0.95, a second notch 77 which is open upward is disposed on the second end plate 7124, and a length ratio of the second notch 77 to the second end plate 7124 is between 0.6 and 0.95. In the structure, because the electric core can produce the phenomenon of inflation in the use, set up first breach 76 on first curb plate 7123, and guarantee that the length of first breach 76 and the length ratio of first curb plate 7123 make first curb plate 7123 can not occupy too much space in the width direction of electric core between 0.5 to 0.95, above-mentioned setting mode can provide bigger inflation space for the inside first naked electric core of electric core. Accordingly, the second notch 77 can be formed in the second side plate 7124 to achieve the same effect.

As shown in fig. 7, in the present embodiment, the enclosing plate 712 includes a first end plate 7121 and a second end plate 7122, a protruding structure 75 protruding outward is disposed on each of the outer surface of the first end plate 7121 and the outer surface of the second end plate 7122, the outer end surface of the protruding structure 75 includes a vertical surface and a guiding inclined surface located below the vertical surface, and the guiding inclined surface is gradually inclined inward in the direction from top to bottom. In the above-mentioned structure, protruding structure 75 can fill the clearance between first end plate 7121 and second end plate 7122 and casing 20 to reduced the probability of the naked electric core 60 of first naked electric core 50 and second and taking place the drunkenness at the length direction of electric core, promoted the life of telecommunications. In addition, the outer end surface of the protruding structure 75 includes a vertical surface and a guiding inclined surface located below the vertical surface, and the guiding inclined surface can play a guiding role when the insulating sleeve 70 is installed in the housing 20, so as to improve the assembly efficiency of the battery cell.

It should be noted that, in the embodiment, the convex structures 75 are convex structures protruding outward.

Of course, as shown in fig. 8, in other embodiments, the first side plate 7123 and the second side plate 7124 of the bottom case 71 may also be provided with the protrusion structure 75, but it is considered that the protrusion structure 75 provided on the first side plate 7123 and the second side plate 7124 occupies a certain space in the width direction of the battery cell, so that the expansion space of the first bare cell 50 and the second bare cell 60 is reduced, and therefore, it is an optimal embodiment that the protrusion structure 75 is only provided on the first end plate 7121 and the second end plate 7122.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … … surface," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides a connecting terminal of electric core which characterized in that, connecting terminal includes:

a pole connecting section (11);

the first tab connecting section (12) is connected with the pole connecting section (11) and is connected with a tab of a naked electric core, and the first tab connecting section (12) is a first straight plate section;

first utmost point ear cooperation section (13), with first utmost point ear linkage segment (12) are connected and with the utmost point ear butt of naked electric core, first utmost point ear cooperation section (13) are first arc board section.

2. The connecting terminal of electric core of claim 1, characterized in that, naked electric core includes first naked electric core and the naked electric core of second, first utmost point ear linkage segment (12) with the utmost point ear of first naked electric core is connected, first utmost point ear cooperation section (13) with the utmost point ear butt of first naked electric core, connecting terminal still includes:

the second pole lug connecting section (14) is connected with the pole connecting section (11) and connected with a pole lug of the second bare cell, and the second pole lug connecting section (14) is a second straight plate section;

second utmost point ear cooperation section (15), with second utmost point ear linkage segment (14) are connected and with the utmost point ear butt of the naked electric core of second, second utmost point ear cooperation section (15) are second arc plate section.

3. The connecting terminal of the battery cell according to claim 2, wherein an angle of a central angle corresponding to the first arc-shaped plate segment is greater than or equal to 90 °; the angle of the central angle corresponding to the second arc-shaped plate section is greater than or equal to 90 degrees.

4. The connecting terminal of the battery cell of claim 2, wherein the pole connecting section (11) is a bent plate, the pole connecting section (11) comprises a first connecting plate (111) electrically connected to a pole and a second connecting plate (112) arranged at an angle to the first connecting plate (111), the first tab connecting section (12) is arranged on one side of the second connecting plate (112) and forms an included angle with the second connecting plate (112), and the second tab connecting section (14) is arranged on the other side of the second connecting plate (112).

5. A cell, comprising:

a housing (20) having an accommodation chamber and an opening (21) communicating with the accommodation chamber;

a top cover (30) which covers the opening (21) of the shell (20), wherein a plurality of poles (40) are arranged on the top cover (30);

a plurality of connection terminals (10) disposed in the receiving cavity and in one-to-one correspondence with the plurality of poles (40), wherein the connection terminals (10) are the connection terminals according to claim 1, and the first tab fitting section (13) of the connection terminals (10) is located at an inner end of the first tab connection section (12);

a first bare cell (50) disposed within the containment cavity;

wherein, the utmost point post linkage segment (11) of connecting terminal (10) with utmost point post (40) are connected, first utmost point ear linkage segment (12) with the utmost point ear of first naked electric core (50) is connected, first utmost point ear cooperation section (13) with the utmost point ear butt of first naked electric core (50).

6. A cell, comprising:

a housing (20) having an accommodation chamber and an opening communicating with the accommodation chamber;

the top cover (30) is covered on the opening of the shell (20), and a plurality of poles (40) are arranged on the top cover (30);

a plurality of connection terminals (10) disposed in the receiving cavity and in one-to-one correspondence with the plurality of poles (40), wherein the connection terminals (10) are according to any one of claims 2 to 4, a first pole-tab mating section (13) of the connection terminals (10) is located at an inner end of the first pole-tab connection section (12), and a second pole-tab mating section (15) of the connection terminals (10) is located at an inner end of the second pole-tab connection section (14);

a first bare cell (50) and a second bare cell (60) disposed in the accommodating cavity and opposite to each other;

wherein, the utmost point post linkage segment (11) of connecting terminal (10) with utmost point post is connected, first utmost point ear linkage segment (12) with the utmost point ear of first naked electric core (50) is connected, first utmost point ear cooperation section (13) with the utmost point ear butt of first naked electric core (50), second utmost point ear linkage segment (14) with the utmost point ear of the naked electric core of second (60) is connected, second utmost point ear cooperation section (15) with the utmost point ear butt of the naked electric core of second (60).

7. The cell of claim 6, further comprising:

the insulating sleeve (70) is arranged in the accommodating cavity, the insulating sleeve (70) comprises a bottom shell (71) arranged below the first naked battery cell (50) and the second naked battery cell (60) and a side shell (72) arranged on the circumferential outer side of the first naked battery cell (50), the second naked battery cell (60) and the connecting terminal (10), the side shell (72) is arranged in a vertically through mode, the bottom shell (71) comprises a bottom plate (711) and a surrounding plate (712) connected with the bottom plate (711), the surrounding plate (712) is embedded in the side shell (72) in a sleeved mode, the bottom plate (711) is an arc-shaped plate arranged in a downward protruding mode, and the cross section of the arc-shaped plate is of a structure with a low middle and high two sides.

8. The electric core of claim 7, wherein the connection terminal (10) further comprises a support plate (16), the support plate (16) is disposed between the first tab connection section (12) and the second tab connection section (14), the support plate (16) is located at one end of the first tab connection section (12) and the second tab connection section (14) far away from the terminal connection section (11), the shroud plate (712) comprises a first end plate (7121) and a second end plate (7122), a first buckle (73) is disposed on an inner wall of the first end plate (7121), a second buckle (74) is disposed on an inner wall of the second end plate (7122), and lower surfaces of the first buckle (73) and the second buckle (74) are abutted against an upper surface of the support plate (16).

9. The battery cell of claim 7, wherein the enclosing plate (712) comprises a first end plate (7121), a second end plate (7122), a first side plate (7123) and a second side plate (7124), the first side plate (7123) and the second side plate (7124) are both located between the first end plate (7121) and the second end plate (7122), a first notch (76) which opens upward is arranged on the first side plate (7123), the ratio of the length of the first notch (76) to the length of the first side plate (7123) is between 0.5 and 0.95, a second notch (77) which opens upward is arranged on the second side plate (7124), and the ratio of the length of the second notch (77) to the length of the second side plate (7124) is between 0.6 and 0.95.

10. The electric core of claim 7, wherein the surrounding plate (712) comprises a first end plate (7121) and a second end plate (7122), an outer surface of the first end plate (7121) and an outer surface of the second end plate (7122) are both provided with an outwardly protruding protrusion structure (75), an outer end face of the protrusion structure (75) comprises a vertical face (751) and a guide inclined face (752) positioned below the vertical face (751), and the guide inclined face (752) is gradually inclined inwards in the direction from top to bottom.

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