CN217691551U - Battery with a battery cell - Google Patents

Abstract

The utility model relates to a battery technology field provides a battery, include: the battery shell is internally provided with a separation structure; the battery comprises a first battery cell, a second battery cell and a separator structure, wherein the first battery cell is arranged in a battery shell, and at least part of the first battery cell is positioned on a first side of the separator structure; the battery cell comprises a battery case, a first battery cell and a second battery cell, wherein the battery case is provided with a first side and a second side; wherein, the partition structure is formed with the intercommunication passageway, and the intercommunication passageway link up first side and second side to can make the internal environment of first electric core and second electric core keep the intercommunication, make the electrolyte or the gas of the internal environment of first electric core and second electric core can keep consistent basically with this, guarantee that the inside uniformity of battery is higher, improve battery internal circulation performance with this, thereby guarantee the holistic life of battery.

Description

Battery with a battery cell

Technical Field

The utility model relates to a battery technology field especially relates to a battery.

Background

In the related art, a plurality of battery cells can be arranged inside a battery shell, and due to the limitation of a shell structure, the problem that the battery cells cannot be communicated with each other easily occurs in the internal environment of the battery shell, so that the performance of the battery is affected.

SUMMERY OF THE UTILITY MODEL

The utility model provides a battery to improve the performance of battery.

The utility model provides a battery, include:

the battery comprises a battery shell, wherein a separation structure is arranged in the battery shell;

the battery comprises a first battery cell, a second battery cell and a separator structure, wherein the first battery cell is arranged in a battery shell, and at least part of the first battery cell is positioned on a first side of the separator structure;

the battery cell comprises a battery case, a first battery cell and a second battery cell, wherein the battery case is provided with a first side and a second side;

wherein the partition structure is formed with a communication passage that penetrates the first side and the second side.

The utility model discloses the battery includes battery case, first electric core and second electric core, and first electric core and second electric core set up in battery case to this satisfies the capacity needs of battery, and can reduce the shaping degree of difficulty of electric core to the great battery of capacity requirement, thereby improves the performance of battery. Be provided with the partition structure in the battery case, first electric core and second electric core are located partition structure's first side and second side respectively, through making the partition structure be formed with the intercommunication passageway, and the intercommunication passageway link up first side and second side, thereby can make the internal environment of first electric core and second electric core keep the intercommunication, make the electrolyte or the gas of the internal environment of first electric core and second electric core can keep basic consistent with this, guarantee that the inside uniformity of battery is higher, improve battery internal cycle performance with this, thereby guarantee the holistic life of battery.

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 so as 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 schematic diagram illustrating one perspective of a battery according to an exemplary embodiment;

FIG. 2 is a schematic diagram illustrating another perspective of a battery according to an exemplary embodiment;

FIG. 3 is an exploded schematic view of a battery according to an exemplary embodiment;

FIG. 4 is a schematic diagram of a second housing member of a battery according to an exemplary embodiment;

fig. 5 is a schematic diagram illustrating the structure of a first cell and a second cell of a battery according to an exemplary embodiment;

fig. 6 is a schematic diagram illustrating a structure of a battery according to another exemplary embodiment.

The reference numerals are illustrated below:

10. a battery case; 11. a communication channel; 12. a first portion; 13. a second portion; 14. a first recess; 15. a second recess; 16. a first surface; 17. a second surface; 18. a first housing member; 19. a second housing member; 20. a first cell; 21. a first cell body; 22. a first positive electrode tab; 23. a first negative electrode tab; 30. a second cell; 31. a second cell body; 32. a second positive electrode tab; 33. a second negative electrode tab; 40. a pole assembly; 50. a support portion.

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, so it should 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 explicitly specified or limited otherwise, the terms "first", "second", and the like 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 6, the battery includes: a battery case 10, a partition structure being provided in the battery case 10; a first cell 20, the first cell 20 being disposed within the battery casing 10, and at least a portion of the first cell 20 being located on a first side of the partition structure; a second battery cell 30, wherein the second battery cell 30 is disposed in the battery casing 10, and at least a portion of the second battery cell 30 is located on a second side of the separation structure, and the first side and the second side are disposed opposite to each other, so that the first battery cell 20 and the second battery cell 30 are disposed along the first direction a; wherein the partition structure is formed with a communication passage 11, the communication passage 11 penetrating the first and second sides.

The utility model discloses the battery of an embodiment includes battery housing 10, first electric core 20 and second electricity core 30, and first electric core 20 and second electricity core 30 set up in battery housing 10 to this capacity needs that satisfy the battery, and can reduce the shaping degree of difficulty of electric core to the great battery of capacity requirement, thereby improve the performance of battery. Be provided with the partition structure in the battery case 10, first electric core 20 and second electric core 30 are located the first side and the second side of partition structure respectively, through making the partition structure be formed with intercommunication passageway 11, and intercommunication passageway 11 link up first side and second side, thereby can make the internal environment of first electric core 20 and second electric core 30 keep the intercommunication, make the electrolyte or the gas of the internal environment of first electric core 20 and second electric core 30 can keep basic phase unanimous with this, guarantee that the inside uniformity of battery is higher, with this improvement battery internal cycle performance, thereby guarantee the holistic life of battery.

Note that the battery includes a cell and an electrolyte, and a minimum unit capable of performing an electrochemical reaction such as charge/discharge. The 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.

First electric core 20 and second electric core 30 set up along first direction A, and first electric core 20 and second electric core 30 can form the structure of arranging about promptly to increased the whole length of electric core unit, in independent first electric core 20 and second electric core 30 carry out the shaping process, can avoid the great electric core of shaping length, not only can improve shaping efficiency, and can improve the precision after the shaping, with this performance of guaranteeing follow-up formation electric core unit.

Be provided with the partition structure in the battery case 10, the partition structure is formed with intercommunication passageway 11, and intercommunication passageway 11 link up first side and second side to can make the internal environment of first electric core 20 and second electric core 30 to be linked together through intercommunication passageway 11, guarantee that the holistic uniformity of battery is better.

When the battery is injected with electrolyte, due to the existence of the communication channel 11, the infiltration rates of the electrolyte can be basically consistent, so that the electrolyte can be rapidly and fully infiltrated into the first battery cell 20 and the second battery cell 30. Even if the expansion degrees of the first battery cell 20 and the second battery cell 30 are different, in the charging and discharging processes of the battery, even if the heat generation of the first battery cell 20 and the heat generation of the second battery cell 30 are different, the rapid heat transfer can be realized through the communication channel 11, so that the heat of the first battery cell 20 and the heat of the second battery cell 30 are basically balanced, and the safety performance of the battery is improved.

In this embodiment, due to the existence of the communication channel 11, the first battery cell 20 and the second battery cell 30 are communicated, and the gas and the electrolyte can be conducted through the communication channel 11, so that the overall performance of the battery is uniform, and the electrolyte is sufficiently soaked. When the thermal runaway happens inside the battery, the gas is uniformly and timely discharged out of the battery, so that the serious thermal runaway inside the battery is avoided.

In one embodiment, the communication passage 11 may be a groove, or the communication passage 11 may be a through hole. The length of the groove is smaller than that of the separation structure along the second direction B, and the first direction A is perpendicular to the second direction B. In the second direction B, the length of the through-hole may be less than the length of the partition structure, or the length of the through-hole may be equal to the length of the partition structure.

In one embodiment, the communication channel 11 penetrates through the first side and the second side along the first direction a, that is, the direction in which the communication channel 11 penetrates through the first side and the second side may be parallel to the first direction a, that is, along the first direction a, the length of the communication channel 11 may be relatively small, which not only facilitates the communication between the first battery cell 20 and the second battery cell 30, but also quickly achieves the equilibrium of the electrolyte and the gas in the internal environment of the first battery cell 20 and the second battery cell 30.

In some embodiments, the direction in which the non-discharge communication passage 11 penetrates the first and second sides may be inclined to the first direction a.

In one embodiment, as shown in fig. 3 and fig. 4, the communication channel 11 separates the separation structure into the first part 12 and the second part 13, and the first part 12 and the second part 13 are arranged at intervals along the second direction B, so that the communication channel 11 can more conveniently realize the communication between the first electrical core 20 and the second electrical core 30, thereby ensuring that gas and electrolyte can be conducted through the communication channel 11, and realizing uniform overall performance of the battery, so that the electrolyte is sufficiently soaked, the gas is uniformly and timely discharged from the inside of the battery, and serious thermal runaway inside the battery is avoided.

In one embodiment, the length of the communication channel 11 is less than that of the first portion 12, and the length of the communication channel 11 is less than that of the second portion 13 along the second direction B, so that the first portion 12 and the second portion 13 can reliably separate the first battery cell 20 from the second battery cell 30, and the communication channel 11 can also be ensured to be capable of sufficiently communicating the first battery cell 20 with the second battery cell 30.

The length of the communication channel 11 is smaller than the length of the first portion 12, and the length of the communication channel 11 is smaller than the length of the second portion 13, so that the first portion 12 and the second portion 13 can also improve the strength of the battery case 10.

In one embodiment, the length of the first portion 12 is equal to the length of the second portion 13 along the second direction B, which not only facilitates the formation of the first portion 12 and the second portion 13, but also ensures the uniformity of the structure, thereby ensuring the strength of the battery case 10 to be relatively uniform, thereby improving the overall strength of the battery case 10.

In one embodiment, the first direction a is perpendicular to the second direction B, which not only facilitates the arrangement of the first battery cell 20 and the second battery cell 30 in the battery casing 10, but also effectively utilizes the internal space of the battery casing 10, and the first portion 12 and the second portion 13 do not occupy too much internal space of the battery casing 10, so as to improve the space utilization of the battery casing 10 and improve the energy density of the battery.

In one embodiment, as shown in fig. 1 to 4, a first recess 14 and a second recess 15 are disposed on the same outer surface of the battery case 10, the first recess 14 and the second recess 15 are disposed at intervals, the first recess 14 and the second recess 15 correspond to the first portion 12 and the second portion 13, respectively, the first recess 14 and the first portion 12 are disposed on the outer surface and the inner surface of the battery case 10, respectively, and the second recess 15 and the second portion 13 are disposed on the outer surface and the inner surface of the battery case 10, respectively, so that the first portion 12 and the second portion 13 can improve the strength of the battery case 10, and the overall structural strength of the middle portion of the battery case 10 can be improved, thereby preventing the occurrence of fracture.

The communication channel 11 between the first portion 12 and the second portion 13 conveniently realizes the communication between the first battery cell 20 and the second battery cell 30, so that the gas and the electrolyte can be conducted through the communication channel 11, the uniformity of the overall performance of the battery is realized, and the electrolyte is fully soaked. And the first recess 14 and the second recess 15 respectively correspond to the first part 12 and the second part 13, so that the overall structural strength of the middle part of the battery can be ensured, and the occurrence of fracture can be avoided.

In one embodiment, the first recess 14 is press-formed to form the first portion 12 at the inner surface of the battery case 10, and the second recess 15 is press-formed to form the second portion 13 at the inner surface of the battery case 10, which may not only facilitate the formation of the first portion 12 and the second portion 13, may improve the formation effect of the battery case 10, and may secure the structural strength of the battery case 10.

In one embodiment, the separation structure is a reinforcing structure, and the separation structure not only can form the communication channel 11 so that the internal environments of the first battery cell 20 and the second battery cell 30 are kept in communication, but also can improve the structural strength of the battery case 10.

The first part 12 and the second part 13 of the partition structure are both reinforcing structures, for example, the first part 12 and the second part 13 may be reinforcing ribs, i.e., reinforcing structures are additionally formed inside the battery case 10. Alternatively, the first portion 12 and the second portion 13 are formed by punching the battery case 10, i.e., the first portion 12 and the second portion 13 are reinforcing structures.

In one embodiment, the battery further comprises at least one pole post assembly 40, the pole post assembly 40 is disposed in the battery housing 10, wherein at least one of the first recess 14 and the second recess 15 is used for accommodating the pole post assembly of another battery, so that when the battery is grouped, the first recess 14 and the second recess 15 give way to the pole post assembly of another battery, so as to avoid collision with the pole post assembly, thereby improving the space utilization rate when the battery is grouped.

In one embodiment, the pole assembly 40 is located outside the first recess 14 and the second recess 15, i.e. the pole assembly 40 is not disposed in the first recess 14 and the second recess 15, the pole assembly 40 can be disposed protruding out of the battery housing 10, as shown in fig. 1 and 2, and at this time, when the batteries are grouped, the protruding pole assembly 40 can be received in the recess of another battery.

In one embodiment, as shown in fig. 1 and fig. 2, the first recess 14 and the second recess 15 are disposed on a side of the battery housing 10 away from the pole assembly 40, so that the first recess 14 and the second recess 15 can reliably receive the pole assembly of another battery, and connection between subsequent adjacent batteries can be facilitated, thereby improving space utilization rate when the batteries are grouped.

The first recess 14 and the post assembly 40 are respectively located on two opposite surfaces of the battery case 10, and the second recess 15 and the first recess 14 and the post assembly 40 are respectively located on two opposite surfaces of the battery case 10.

In one embodiment, the orthographic projection of the first recess 14 and the second recess 15 on the surface of the battery case 10 where the pole assembly 40 is disposed is at least partially overlapped with the pole assembly 40, that is, the projection of the first recess 14 and the second recess 15 and the projection of the pole assembly 40 on the surface perpendicular to the battery case 10 are at least partially overlapped, so that when the batteries are grouped, the two batteries can be aligned with each other, and the pole assembly of another battery can be reliably accommodated in the first recess 14 and the second recess 15, and meanwhile, the consistency of battery processing is ensured, and the processing is facilitated.

It should be noted that the number of the pole assemblies 40 may be two, and the two pole assemblies 40 may correspond to the first recess 14 and the second recess 15, respectively.

In one embodiment, as shown in fig. 6, the pole assembly 40 is disposed in at least one of the first recess 14 and the second recess 15, so that the pole assembly 40 can be prevented or reduced from protruding out of the battery housing 10, thereby preventing the pole assembly from affecting the space utilization of the battery pack.

It should be noted that the battery may include a first battery cell 20 and a second battery cell 30, and the first recess 14 and the second recess 15 may be located in the middle of the battery case 10.

In one embodiment, one end of the first recess 14 and one end of the second recess 15 penetrate through two opposite sides of the battery case 10, which is not only simple in structure and convenient for molding, but also facilitates the subsequent formation of a fit with other structures.

In one embodiment, as shown in fig. 1 and 2, the battery case 10 includes two opposing first surfaces 16 and four second surfaces 17 disposed around the first surfaces 16, the first surfaces 16 having an area larger than that of the second surfaces 17; the first recess 14 and the second recess 15 are disposed on the first surface 16, so that the first portion 12 and the second portion 13 can be formed on a large surface of the battery casing 10, and the first battery cell 20 and the second battery cell 30 can be conveniently communicated through the communication channel 11.

The post assembly 40 is disposed on the first surface 16, thereby ensuring that the post assembly 40 has a reliable support surface, thereby ensuring the stability of the post assembly 40.

It should be noted that the two opposite first surfaces 16 are large surfaces of the battery case 10, the four second surfaces 17 are small surfaces of the battery case 10, the four second surfaces 17 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 one embodiment, the first recess 14 and the second recess 15 respectively intersect with the two opposite second surfaces 17, which not only facilitates the formation of the first recess 14 and the second recess 15, but also ensures that the first recess 14 and the second recess 15 have relatively large areas, thereby facilitating the accommodation of the pole assembly.

In one embodiment, as shown in fig. 3 and 5, the first battery cell 20 includes a first cell body 21, a first positive electrode tab 22, and a first negative electrode tab 23, where the first positive electrode tab 22 and the first negative electrode tab 23 extend from one end of the first cell body 21 along a first direction a; the second battery cell 30 includes a second battery cell body 31, a second positive tab 32 and a second negative tab 33, where the second positive tab 32 and the second negative tab 33 extend from one end of the second battery cell body 31 along a third direction C; the first positive electrode tab 22 is electrically connected to the second positive electrode tab 32, the first negative electrode tab 23 is electrically connected to the second negative electrode tab 33, the first direction a and the third direction C are opposite directions, so that the first electrical core 20 and the second electrical core 30 are connected in parallel, and two electrode leading-out ends of the electrical core unit can be led out from the same side of the battery shell 10, so as to facilitate the assembly of the battery.

It should be noted that, the first positive electrode tab 22 and the first negative electrode tab 23 extend from one end of the first cell body 21 along the first direction a, the second positive electrode tab 32 and the second negative electrode tab 33 extend from one end of the second cell body 31 along the third direction C, the first direction a and the third direction C are opposite directions, and the first positive electrode tab 22, the first negative electrode tab 23, the second positive electrode tab 32 and the second negative electrode tab 33 are all non-full-tab structures, but because the first positive electrode tab 22 is electrically connected with the second positive electrode tab 32 and the first negative electrode tab 23 is electrically connected with the second negative electrode tab 33, the tabs can also be ensured to have sufficient overcurrent capacity, and the safety performance of the battery can be ensured.

In one embodiment, the first positive tab 22 is disposed opposite to the second positive tab 32, and the first negative tab 23 is disposed opposite to the second negative tab 33, so that the connection between the first positive tab 22 and the second positive tab 32 and the connection between the first negative tab 23 and the second negative tab 33 can be facilitated.

The first positive electrode tab 22 and the second positive electrode tab 32 are oppositely arranged, when the first positive electrode tab 22 is flattened, at least part of the projection of the flattened first positive electrode tab 22 along the projection of the flattened second positive electrode tab 32 is positioned on the second positive electrode tab 32. The first negative electrode tab 23 and the second negative electrode tab 33 are arranged oppositely, when the first negative electrode tab 23 is leveled, at least part of projection of the leveled first negative electrode tab 23 is located on the second negative electrode tab 33 along the projection of the leveled second negative electrode tab 33.

The first positive electrode tab 22 and the second positive electrode tab 32 are disposed oppositely, and it can be considered that the end of the first positive electrode tab 22 is directly opposite to the end of the second positive electrode tab 32, at this time, the end of the first positive electrode tab 22 and the end of the second positive electrode tab 32 can be disposed at intervals, the first positive electrode tab 22 and the second positive electrode tab 32 are electrically connected through an adapter sheet or a pole assembly, or the end of the first positive electrode tab 22 and the end of the second positive electrode tab 32 can be butted.

The first positive electrode tab 22 is disposed opposite the second positive electrode tab 32, and it can be considered that a portion of the first positive electrode tab 22 overlaps a portion of the second positive electrode tab 32, such that the first positive electrode tab 22 is electrically connected to the second positive electrode tab 32.

Accordingly, the first negative electrode tab 23 is disposed opposite to the second negative electrode tab 33, and it can be considered that an end of the first negative electrode tab 23 is directly opposite to an end of the second negative electrode tab 33. Or, it may be considered that the portion of the first anode tab 23 overlaps the portion of the second anode tab 33.

In one embodiment, as shown in fig. 1 and 3, the battery further includes: a pole assembly 40, the pole assembly 40 being disposed in the battery case 10; wherein, first positive pole tab 22 and second positive pole tab 32 all are connected with utmost point post subassembly 40 electricity, or, first negative pole tab 23 and second negative pole tab 33 all are connected with utmost point post subassembly 40 electricity to can make utmost point post subassembly 40 as an electrode lead-out end, and another electrode lead-out end can be formed by battery case 10 or another utmost point post subassembly 40.

In one embodiment, as shown in fig. 1 and 3, there are two pole assemblies 40, the first positive pole tab 22 and the second positive pole tab 32 are electrically connected to one pole assembly 40, and the first negative pole tab 23 and the second negative pole tab 33 are electrically connected to the other pole assembly 40, so that the two pole assemblies 40 can be used as two electrode leading-out ends of the battery respectively.

In some embodiments, the two pole assemblies 40 are located on the same side of the battery housing 10.

In some embodiments, two pole assemblies 40 may be located on opposite sides of the battery housing 10.

In one embodiment, the battery case 10 includes a steel case, the first negative electrode tab 23 and the second negative electrode tab 33 are both electrically connected to the steel case, and the first positive electrode tab 22 and the second positive electrode tab 32 are both electrically connected to the electrode assembly 40, so that the battery case 10 and the electrode assembly 40 can be respectively used as two electrode leading-out ends of the battery, which is not only simple in structure, but also can reduce the weight of the battery. The corrosion potential of the steel shell is higher, so that the first negative pole lug 23, the second negative pole lug 33 and the steel shell are electrically connected, so that a large amount of corrosion to the steel shell can be avoided, and the safety performance of the battery is further improved.

In one embodiment, the battery case 10 includes an aluminum case, the first positive tab 22 and the second positive tab 32 are both electrically connected to the aluminum case, and the first negative tab 23 and the second negative tab 33 are both electrically connected to the electrode assembly 40, so that the battery case 10 and the electrode assembly 40 can be respectively used as two electrode leading-out terminals of the battery, which is not only simple in structure, but also can reduce the weight of the battery. The aluminum casing has lower corrosion potential, so that the first positive pole lug 22 and the second positive pole lug 32 are electrically connected with the aluminum casing, so that a large amount of corrosion to the aluminum casing can be avoided, and the safety performance of the battery is further improved.

In one embodiment, there are two pole assemblies 40, the first positive pole tab 22 and the second positive pole tab 32 are electrically connected to one pole assembly 40, and the first negative pole tab 23 and the second negative pole tab 33 are electrically connected to the other pole assembly 40, so that the two pole assemblies 40 can be respectively used as two electrode leading-out ends of the battery.

In one embodiment, as shown in fig. 1, two pole assemblies 40 are disposed on the same first surface 16, which not only facilitates installation and improves assembly efficiency, but also ensures that the pole assembly 40 has a reliable supporting surface, thereby ensuring stability of the pole assembly 40.

The pole assembly 40 is located in the middle of the first surface 16, avoiding the problem that the pole assembly 40 is disposed at the end, resulting in a long electrical connection path between the cells.

In certain embodiments, it is not excluded that two pole assemblies 40 are respectively disposed on the two first surfaces 16.

In one embodiment, as shown in fig. 3, the battery further includes a supporting portion 50, the supporting portion 50 is disposed in the battery housing 10, and the supporting portion 50 may be located between the pole assembly 40 and the tab, so that not only the pole assembly 40 may be supported, but also the tab and the battery housing 10 may be protected from insulation.

In one embodiment, as shown in fig. 3, the battery case 10 includes: a first housing piece 18; a second housing part 19, the second housing part 19 being connected to the first housing part 18; the first housing part 18 is a flat plate, and the second housing part 19 has a partition structure therein. The first housing part 18 and the second housing part 19 are independently arranged, so that the installation of the battery cell unit can be facilitated, and the processing is also more convenient.

In some embodiments, the first housing piece 18 and the second housing piece 19 may each form a receiving cavity, and after the first housing piece 18 and the second housing piece 19 are butted, the cell unit is located in the cavity formed by the two receiving cavities.

In some embodiments, the first housing member 18 is a flat plate, the second housing member 19 is formed with a containing cavity, the battery cell unit is located in the containing cavity, the flat plate can facilitate subsequent connection, and the processing difficulty is low.

An embodiment of the utility model also provides a group battery, including foretell battery.

The utility model discloses the group battery of an embodiment includes the battery, and the battery includes battery casing 10, first electric core 20 and second electric core 30, and first electric core 20 and second electric core 30 set up in battery casing 10 to this satisfies the capacity needs of battery, and can reduce the shaping degree of difficulty of electric core to the great battery of capacity requirement, thereby improves the performance of battery. Be provided with the partition structure in the battery case 10, first electric core 20 and second electric core 30 are located the first side and the second side of partition structure respectively, through making the partition structure be formed with communicating channel 11, and communicating channel 11 link up first side and second side, thereby can make the internal environment of first electric core 20 and second electric core 30 keep the intercommunication, make the electrolyte or the gas of the internal environment of first electric core 20 and second electric core 30 keep being unanimous basically with this, guarantee that the inside uniformity of battery is higher, with this improvement battery internal circulation performance, thereby guarantee the holistic life of group battery.

In one embodiment, the battery pack is a battery module or a battery pack.

The battery module includes a plurality of batteries, and the battery module can also include end plate and curb plate, and end plate and curb plate are used for fixing a plurality of batteries.

It should be noted that a plurality of batteries can be arranged in the battery box after forming the battery module, and the plurality of batteries can be fixed through the end plate and the side 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 disclosure is limited only by the appended claims.

Claims (14)

1. A battery, comprising:

the battery comprises a battery shell (10), wherein a separation structure is arranged in the battery shell (10);

a first cell (20), the first cell (20) being disposed within the battery housing (10), and at least a portion of the first cell (20) being located on a first side of the partition structure;

a second cell (30), the second cell (30) being disposed within the battery casing (10), and at least a portion of the second cell (30) being located on a second side of the separation structure, the first side and the second side being disposed opposite such that the first cell (20) and the second cell (30) are disposed in a first direction;

wherein the partition structure is formed with a communication passage (11), the communication passage (11) penetrating the first side and the second side.

2. The battery according to claim 1, wherein the communication channel (11) penetrates the first side and the second side in the first direction.

3. The battery according to claim 1, wherein the communication channel (11) divides the partition structure into separate first and second portions (12, 13), the first and second portions (12, 13) being spaced apart in the second direction.

4. The battery according to claim 3, characterized in that, along the second direction, the length of the communication channel (11) is less than the length of the first portion (12), the length of the communication channel (11) being less than the length of the second portion (13).

5. The battery according to claim 4, characterized in that, along the second direction, the length of the first portion (12) is equal to the length of the second portion (13).

6. The battery according to claim 3, wherein the same outer surface of the battery case (10) is provided with a first recess (14) and a second recess (15), the first recess (14) and the second recess (15) are arranged at intervals, the first recess (14) and the second recess (15) correspond to the first portion (12) and the second portion (13), respectively, the first recess (14) and the first portion (12) are located on the outer surface and the inner surface of the battery case (10), respectively, and the second recess (15) and the second portion (13) are located on the outer surface and the inner surface of the battery case (10), respectively.

7. The battery according to claim 6, wherein the first recess (14) is press-formed to form the first portion (12) at an inner surface of the battery case (10), and the second recess (15) is press-formed to form the second portion (13) at an inner surface of the battery case (10).

8. The battery according to claim 6, further comprising at least one pole assembly (40), the pole assembly (40) being disposed to the battery housing (10);

wherein at least one of the first recess (14) and the second recess (15) is for receiving a pole assembly of another battery;

alternatively, the pole assembly (40) is provided within at least one of the first recess (14) and the second recess (15).

9. The battery according to claim 6, wherein the battery case (10) comprises two opposing first surfaces (16) and four second surfaces (17) disposed around the first surfaces (16), the first surfaces (16) having an area greater than the second surfaces (17);

wherein the first recess (14) and the second recess (15) are provided on the first surface (16).

10. The battery according to claim 9, characterized in that the first recess (14) and the second recess (15) intersect the two opposite second surfaces (17), respectively.

11. The battery according to any one of claims 6 to 10, wherein the separation structure is a reinforcing structure.

12. The battery according to any one of claims 3 to 10, wherein the second direction is perpendicular to the first direction.

13. The battery according to any of claims 1-10, characterized in that the first cell (20) comprises a first cell body (21), a first positive tab (22) and a first negative tab (23), the first positive tab (22) and the first negative tab (23) extending from one end of the first cell body (21) in the first direction;

the second battery cell (30) comprises a second battery cell body (31), a second positive electrode tab (32) and a second negative electrode tab (33), and the second positive electrode tab (32) and the second negative electrode tab (33) extend out from one end of the second battery cell body (31) along a third direction;

wherein, first positive pole utmost point ear (22) with second positive pole utmost point ear (32) electricity is connected, first negative pole utmost point ear (23) with second negative pole utmost point ear (33) electricity is connected, first direction with the third direction is two opposite directions.

14. The battery according to any one of claims 1 to 10, wherein the battery case (10) comprises:

a first housing piece (18);

a second housing part (19), the second housing part (19) being connected to the first housing part (18);

the first housing part (18) is a flat plate, and the separation structure is arranged in the second housing part (19).

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