CN218182317U - Battery with improved battery capacity - Google Patents

Abstract

The application provides a battery, including the casing, be located electric core and electric core radiator in the casing, electric core includes first electric core module and second electric core module, and electric core radiator is located between first electric core module and the second electric core module, and the first side of electric core radiator contacts or links to each other with first electric core module, and the second side contacts or links to each other with second electric core module. The application provides a battery, with the inside heat of electric core fast timely with lower thermal resistance transmission to the outside cold junction of electric core effectively, can be timely to each electric core module heat dissipation, promote heat-sinking capability, realize carrying out high-efficient radiating purpose to whole electric core, improve the heat dispersion of battery and influence life's problem because of operating temperature is higher among the solution prior art in order to guarantee or extension battery life.

Description

Battery with a battery cell

Technical Field

The application relates to the technical field of batteries, in particular to a battery.

Background

Under the social background of advocating to save fuel, more and more kinds of equipment all need use the battery power supply, and this service environment has also put forward higher requirement to the life of battery. Under high power conditions, or under long-term full-load operation conditions, batteries face a more severe heating problem. The characteristics of the cell itself determine that the battery life is significantly reduced if the cell temperature is high for a long time. Therefore, heat dissipation of the battery is an important problem to be solved to secure or extend the life of the battery. How to improve and improve battery heat dispersion through reasonable structure to reduce the temperature of battery during operation, avoid battery life to reduce, be the key research direction of technical staff in the field.

Disclosure of Invention

In view of this, the embodiment of the present application is directed to providing a battery, which effectively dissipates heat for a battery cell, improves heat dissipation performance of the battery to ensure or prolong a service life of the battery, and solves a problem that the service life of the battery is affected due to a high working temperature in the prior art.

Based on above-mentioned purpose, this application provides a battery, including the casing, be located electric core and electric core radiator in the casing, electric core includes first electric core module and second electric core module, electric core radiator is located first electric core module with between the second electric core module, the first side of electric core radiator with first electric core module contacts or links to each other, the second side with second electric core module contacts or links to each other.

In one possible embodiment, the third side and/or the fourth side and/or the bottom end of the cell heat sink is in contact with or connected to the housing.

In one possible embodiment, each of the first cell module and the second cell module includes a plurality of cell units, each of the cell units includes an electrical core and a heat conduction sheet, at least a partial region of a first connection surface of each of the heat conduction sheets is in contact with or connected to the electrical core, and at least a partial region of a second connection surface of each of the heat conduction sheets is in contact with or connected to the cell heat sink.

In one possible embodiment, a first adhesive is disposed between the first connecting surface of the heat conducting strip and the electrical core; and/or a second colloid is arranged between the second connecting surface of the heat conducting fin and the battery core radiator.

In a possible embodiment, the heat conducting sheet is provided with an accommodating groove for accommodating the electrical core, a bottom wall of the accommodating groove forms the first connecting surface, and an outer side wall of the heat conducting sheet opposite to the accommodating groove side wall forms the second connecting surface.

In one possible embodiment, the first adhesive body extends from one end to the other end on the first connecting surface of the heat conducting sheet, and the second adhesive body extends from one end to the other end on the first side surface and/or the second side surface of the cell heat sink; or, on the first connection surface of the heat conducting fin, the first colloid is in a multi-section shape arranged at intervals, and on the first side surface and/or the second side surface of the battery cell radiator, the second colloid extends from one end to the other end; or, on the first connection surface of the heat conducting fin, the first colloid extends from one end to the other end, and on the first side surface and/or the second side surface of the battery cell radiator, the second colloid is in a multi-segment shape arranged at intervals; or, on the first connection surface of the heat conducting fin, the first colloid is in a multi-segment shape arranged at intervals, and on the first side surface and/or the second side surface of the battery cell radiator, the second colloid is in a multi-segment shape arranged at intervals.

In a possible implementation manner, the battery module further includes a bus board, and each tab of the first cell module and each tab of the second cell module are connected to the bus board.

In a possible implementation manner, the battery pack further comprises a connecting bracket located between the bus board and the cell radiator; the bus board is connected with the connecting bracket; and/or the battery core radiator is connected with the connecting bracket.

In a possible implementation manner, the connecting support includes an insulating sheet and two insulating blocks protruding from one side of the insulating sheet and arranged at intervals, the insulating sheet is connected to the top end of the cell radiator, and the two insulating blocks are connected to the bus board.

In a possible implementation manner, the bus bar further comprises a glue filling cover, the glue filling cover comprises a bottom plate and a peripheral side plate circumferentially arranged around the bottom plate, the bottom plate and the peripheral side plate are enclosed to form a glue filling cavity for covering the bus bar, and a fourth glue filled between the glue filling cover and the bus bar is arranged in the glue filling cavity.

In a possible embodiment, one end of the peripheral side plate, which is far away from the bus bar, is located on one side of the top sealing edge of the battery cell, which is far away from the bus bar; and/or the glue surface of the fourth glue body, which is far away from one side of the bus board, is positioned on one side, which is far away from the bus board, of the top sealing edge of the battery cell.

In one possible embodiment, the battery cell heat sink is provided with a heat dissipation through hole and a fin located in the heat dissipation through hole, two orifices of the heat dissipation through hole are located on the third peripheral side plate and the fourth peripheral side plate, the casing is provided with openings opposite to the two orifices, and the fin and the heat dissipation through hole extend in the same direction.

According to the battery that this application provided, be provided with electric core radiator in the casing of battery, and electric core is not a whole module, but includes first electric core module and second electric core module at least, and electric core radiator locates between the module, and two sides contact or link to each other with the module respectively, then, electric core radiator alternates or intersects inside electric core and meet with electric core, in time with the heat transfer of electric core to the electric core outside, effectually dispels the heat for each electric core module and whole electric core.

Drawings

Fig. 1 is a schematic diagram illustrating a combination of a cell module and a cell heat sink in an embodiment of the present application;

fig. 2 is a schematic structural diagram of a cell heat sink in an embodiment of the present application;

fig. 3 is a schematic diagram illustrating a composition of a cell unit in an embodiment of the present application;

fig. 4 is an overall schematic diagram of a cell unit in the embodiment of the present application;

fig. 5 is a schematic view illustrating connection between a cell heat sink and a heat conductive sheet in an embodiment of the present application;

FIG. 6 is a schematic view of an integrated bus board and a glue pouring cover according to an embodiment of the present disclosure;

FIG. 7 is a schematic structural view of a glue pouring cap according to an embodiment of the present disclosure;

fig. 8 is a schematic structural view of a heat shield sheet according to an embodiment of the present invention.

1. A first cell module; 2. a second cell module; 3. a battery cell radiator; 31. a heat dissipating through hole; 32. a fin; 4. a bus bar; 5. connecting a bracket; 6. a heat conductive sheet; 7. an electrical core; 8. pouring a glue cover; 9. a heat insulating sheet.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

When the battery works, the battery core generates heat mainly due to internal resistance of the battery core and electrochemical reaction, and if the battery does not generate high temperature, the battery core needs to be effectively radiated.

As shown in fig. 1 to 8, an embodiment of the present application provides a battery, where the battery includes a casing, a battery cell located in the casing, and a battery cell heat sink 3, where the battery cell includes a first battery cell module 1 and a second battery cell module 2, the battery cell heat sink 3 is located between the first battery cell module 1 and the second battery cell module 2, a first side of the battery cell heat sink 3 contacts or is connected to the first battery cell module, and a second side of the battery cell heat sink 3 contacts or is connected to the second battery cell module. Then, firstly, the battery cell is not an integral module, but is split-type, and at least includes two battery cell modules, for example, the battery cell may include only the first battery cell module 1 and the second battery cell module 2, or may include three or more battery cell modules, or the first battery cell module 1 and the second battery cell module 2 may be a module unit, and the battery cell includes two or more module units; secondly, on the basis that the battery core is provided with a plurality of battery core modules in a split structure, the battery core radiator 3 is positioned between the battery core modules, when only the first battery core module 1 and the second battery core module 2 are provided, the battery core radiator 3 is provided with one and positioned between the first battery core module 1 and the second battery core module 2, and when the battery core comprises a plurality of battery core modules, one battery core radiator can be arranged between every two adjacent battery core modules; or, when electric core includes a plurality of module units, electric core radiator 3 can be provided with a plurality ofly, and the interval arrangement can also be to match with module unit one by one, and in every module unit, electric core radiator 3 all is located between first electric core module 1 and the second electric core module 2. So set up, be equivalent to arranging that electric core radiator 3 alternates or interleave with electric core, at electric core everywhere or electric core inside establish with external cold junction between the heat dissipation way, reduce the thermal resistance between heat source and the outside cold junction, transmit electric core outside cold junction with lower thermal resistance quick timely with the inside heat of electric core effectively, can be timely to each electric core module heat dissipation, promote heat-sinking capability, realize carrying out high-efficient radiating purpose to whole electric core.

The battery cell radiator 3 has a first side surface, a second side surface, a third side surface, and a fourth side surface that are distributed along the circumferential direction, and has a top end surface and a bottom end surface. In an embodiment, first electric core module 1 and second electric core module 2 can list in the both sides of electric core radiator 3, along first electric core module 1 to second electric core module 2's direction, and two relative sides of electric core radiator 3 are first side and second side respectively, and first side contacts or links to each other with first electric core module 1, and the second side contacts or links to each other with second electric core module 2, can dispel the heat fast.

Of course, in other embodiments, the first side surface and the second side surface may also be two intersecting/adjacent side surfaces of the cell module 3.

In the embodiment, the first battery cell module 1 is connected with the battery cell radiator 3 through a colloid, in the embodiment, the second battery cell module 2 is connected with the battery cell radiator 3 through a colloid, and in the embodiment, the first battery cell module 1 and the second battery cell module 2 are connected with the battery cell radiator 3 through a colloid. In particular, the glue may be a thermally conductive glue. Due to the arrangement, on one hand, the connection stability of the battery cell radiator 3 and the battery cell module can be enhanced, and the stable and continuous heat transfer is ensured; on the other hand, when the colloid is heat-conducting glue, the heat transfer can be promoted, and the heat dissipation efficiency and the heat dissipation effect are improved.

In one embodiment, the first cell module 1 and the second cell module 2 have the same structure and volume, and in a module unit formed by combining the first cell module 1, the second cell module 2 and the cell radiator 3, the cell radiator 3 is located at the middle position; when the battery cell only included first battery cell module 1 and second battery cell module 2, battery cell radiator 3 was located the positive centre of whole battery cell. So set up, on the one hand, electric core radiator 3 is in the intermediate position of electric core, can hoard high thermal middle zone most easily to electric core best heat dissipation and effectively dispel the heat, plays better radiating effect, and on the other hand, the difference in temperature that can also make the electric core module of radiator both sides can not be great, plays even radiating effect.

At least one of the third side surface, the fourth side surface and the bottom end surface of the electric core radiator 3 is in contact with the shell or is connected with the shell through a colloid such as a heat-conducting glue, any two of the third side surface, the fourth side surface and the bottom end surface can be in contact with the shell or is connected with the shell through a colloid such as a heat-conducting glue, and the heat exchange efficiency of the electric core radiator and the cold end is improved.

In an embodiment, each of the first cell module 1 and the second cell module 2 includes a plurality of cell units, each of the cell units includes an electrical core body 7 and a thermal conductive sheet 6, and the electrical core body 7 is a small electrical core. In each battery cell module, each battery cell body 7 is connected in series or in parallel, and each battery cell unit is stacked and arranged according to the series or parallel relation to form the battery cell module. In each cell unit, the heat conducting sheet 6 is in contact with or connected to at least a part of the electrical core 7, for example, at least a part of the first connecting surface of the heat conducting sheet 6 is in contact with or connected to the electrical core 7. Meanwhile, in the module, each heat-conducting fin 6 is at least partially contacted or connected with the cell radiator 3, for example, each heat-conducting fin 6 in the first cell module 1 is at least partially contacted or connected with the first side surface of the cell radiator 3 on the second connecting surface; each heat conducting fin 6 in the second cell module 2 has at least a local area on the second connection surface, and is in contact with or connected to the second side surface of the cell radiator 3. The heat conducting fin 6 realizes heat conduction between the electric core body 7 and the electric core radiator 3. So set up, on the one hand, conducting strip 6 can play the soaking effect to electric core 7, and on the other hand, conducting strip 6 derives and transmits the heat of every electric core 7 in the electric core module for electric core radiator 3, effectively derives and transmits the inside heat of electric core module for the cold junction, has carried out comprehensive, deep, dispel the heat effectively to electric core module, has good radiating effect. In addition, the heat conducting sheet 6 has a certain protection effect on the electric core 7, such as reducing the damage of impact on the electric core 7.

Further, a first adhesive is disposed between the first connecting surface of the heat conducting strip 6 and the outer surface of the electrical core 7, that is, the heat conducting strip 6 is adhered to the electrical core 7 through the first adhesive. And/or a second colloid is arranged between the second connecting surface of the heat conducting fin 6 and the corresponding side surface (the first side surface or the second side surface) of the cell radiator 3, namely, the heat conducting fin 6 is adhered to the cell radiator 3 through the second colloid. Specifically, the first colloid and the second colloid can be heat-conducting glue. So set up, can enough strengthen the connection steadiness, ensure the stability of heat transfer, also can strengthen the radiating efficiency.

In one embodiment, the electrical core 7 and the heat conducting plate 6 may be each in a plate shape, the heat conducting plate 6 is provided with a receiving groove recessed in the thickness direction and receiving the electrical core 7, the electrical core 7 is embedded in the receiving groove, and the bottom wall of the receiving groove forms the first connecting surface. The side wall of the heat-conducting fin 6, that is, the outer side wall opposite to the side wall of the accommodating groove, forms the second connecting surface. When the electric core units are stacked, two adjacent electric core units are close to or contact or are connected with each other, no matter the electric core body 7 is opposite to the heat conducting sheet 6 of another electric core unit, or the electric core body 7 is opposite to the electric core body 7 of another electric core unit, the effect that each electric core body 7 is wrapped by the heat conducting sheet 6 can be played, a good even heating effect can be formed, in addition, one outer side wall of each heat conducting sheet 6, namely the second connecting surface, is connected with (contacts or is connected with) the surface of the electric core radiator 3, and a good heat conducting effect is achieved.

When the first adhesive is disposed between the heat-conducting strip 6 and the electrical core 7, the first adhesive is coated on the surface of the electrical core 7 and/or the first connecting surface, i.e., the bottom wall of the accommodating groove, and the electrical core 7 is adhered to the heat-conducting strip 6 through the first adhesive. Similarly, a second adhesive is applied to the second connecting surface of the heat conducting strip 6 and/or the surface of the cell radiator 3, so that the heat conducting strip 6 and the cell radiator 3 are bonded through the second adhesive.

In one embodiment, the first adhesive body extends from one end to the other end on the first connection surface of the heat conducting sheet 6, and the second adhesive body also extends from one end to the other end on the first side surface and/or the second side surface of the cell heat sink 3.

In one embodiment, the first adhesive is in a plurality of segments arranged at intervals on the first connecting surface of the heat conducting fin 6, and the second adhesive extends from one end to the other end on the first side surface and/or the second side surface of the cell heat sink 3.

In one embodiment, the first adhesive body extends from one end to the other end on the first connection surface of the heat conducting strip 6, and the second adhesive body is in a multi-segment shape arranged at intervals on the first side surface and/or the second side surface of the cell heat sink 3.

In one embodiment, the first adhesive is in a multi-segment shape arranged at intervals on the first connecting surface of the heat conducting fin 6, and the second adhesive is in a multi-segment shape arranged at intervals on the first side surface and/or the second side surface of the battery cell heat sink 3.

The outer side wall of the other side of the heat conducting fin 6 opposite to the second connecting surface and the bottom wall of the heat conducting fin 6 can also be bonded with the housing through a third colloid, such as a heat conducting glue. So set up, more do benefit to and give the cold junction with the heat conduction of electric core 7, effectively reduce the inside heat of electricity core.

In one embodiment, the heat conducting sheet 6 is in a sheet shape, and is embedded into the accommodating groove through the surrounding of three adjacent folded edges to form the accommodating groove electric core body 7, and the electrode lugs of the electric core body 7 extend out from one side without the folded edges.

Adjacent cell units may be directly stacked, or may be connected and stacked. For example, bonding can be performed by 3 means, the first being bonding using double-sided tape; the second is bonding by using foam with double-sided back glue; and the third is that brush colloid such as heat-conducting glue is used for bonding.

Each colloid can be a heat-conducting glue, and the coating thickness can be 0.3-0.6mm, such as 0.3mm, 0.4mm, 0.5mm, and 0.6mm. Of course, in different embodiments, the colloids may be other colloids besides the thermally conductive adhesive.

The battery cell unit has two kinds of arrangement modes, one kind is that every battery cell unit all is the syntropy setting, and another kind is, two battery cell unit locks form a set ofly, a set of range relatively. After stacking, basically, the electrical core 7 of each cell unit is in contact with (in contact with or connected to) the outer surface of the heat conductive sheet 6 of another cell unit.

In one embodiment, the cell units are stacked or arranged, and the cell units at the end portions are covered with heat insulation sheets along the arrangement direction, that is, in the arrangement direction of the cell units, the two ends of the first cell module 1 and the second cell module 2 are covered with heat insulation sheets 9, as shown in fig. 8, so as to prevent the temperature difference between the electric core 7 at the end portions and the electric core 7 in other units from being too large.

The cell radiator 3 is provided with a heat dissipation through hole 31 and/or a fin 32. For example, in an embodiment, the cell heat sink 3 is provided with a heat dissipation through hole 31, and two orifices of the heat dissipation through hole 31 respectively form a medium inlet and a medium outlet for fluid to flow through, so as to perform efficient heat dissipation on the cell. The medium inlet and the medium outlet of the heat dissipation through hole 31 are respectively located on two opposite surfaces of the cell heat sink 3, for example, a third side surface and a fourth side surface, that is, the heat dissipation through hole 31 extends from one end of the cell heat sink 3 to the other end. As shown in fig. 1, the cell heat sink 3 may be plate-shaped, and the first cell module 1 and the second cell module 2 are respectively arranged at two sides of the plate-shaped cell heat sink 3. The heat dissipation through hole 31 extends from one end of the plate-shaped cell heat sink 3 to the other end, that is, the medium inlet is located at one side of the first cell module 1 and the second cell module 2, and the medium outlet is located at the other side of the first cell module 1 and the second cell module 2. In a preferred embodiment, the extending direction of the heat dissipation through hole 31 is consistent with the arrangement direction of the battery cell units in the first battery cell module 1 and the second battery cell module 2, so that the heat dissipation through hole 31 is routed to each battery cell unit of the two battery cell modules, and can efficiently dissipate heat of the first battery cell module 1 and the second battery cell module 2, thereby significantly improving the heat dissipation capability of the battery.

The medium introduced into the heat dissipation through-hole 31 may be a fluid medium such as a coolant or air. When the medium is air, both the medium inlet and the medium outlet of the heat dissipation through hole 31 are communicated with the outside air, in the preferred embodiment, the housing is provided with openings opposite to the medium inlet and the medium outlet, respectively, and the medium inlet and the medium outlet are communicated with the air outside the battery through the corresponding openings, so that the heat is dissipated efficiently. When the medium is cooling liquid, the medium inlet and the medium outlet are both communicated with the liquid source through pipelines. The cooling fluid may be water, the liquid source may be located outside the casing of the battery, and the pipes or the medium inlet and outlet ends of the cell radiator 3 extend through the casing to communicate with the liquid source.

In one embodiment, the cell heat sink 3 has a plurality of heat dissipation through holes 31 and a plurality of fins 32, the medium inlet and the medium outlet of each heat dissipation through hole 31 are respectively located on the third side and the fourth side of the cell heat sink 3, and each fin 32 is located in the heat dissipation through hole 31 and has a plurality of fins 32, and each fin 32 extends from the medium inlet to the medium outlet, i.e., each fin extends in the same direction as the heat dissipation through hole, and is arranged in the heat dissipation through hole 31 at intervals along the length direction of the medium inlet and the medium outlet. So set up, showing and having increased electric core radiator 3 and cooling fluid's area of contact, effectively improve radiating efficiency and heat dissipation total amount, reinforcing heat-sinking capability.

As shown in fig. 1 and fig. 2, the first cell module 1 and the second cell module 2 are arranged and respectively arranged on two sides of the cell heat sink 3 along the thickness direction of the cell heat sink 3. The height of the cell radiator 3 is matched with that of the heat-conducting fin 6, and the heat-radiating through hole 31 extends from one end of the cell radiator 3 in the width direction to the other end. The medium inlet and the medium outlet of the heat dissipation through-hole 31 extend in the height direction. In one embodiment, the cell heat sink 3 is provided with a main passage, and the medium inlet and the medium outlet both extend from one end to the other end in the height direction. In another embodiment, in the height direction, a plurality of heat dissipation through holes 31 are formed in the cell heat sink 3, and the plurality of heat dissipation through holes 31 are arranged along the height direction.

The battery core comprises a plurality of battery cores 7, and each battery core 7 is provided with a positive electrode tab and a negative electrode tab. The battery is provided with a bus board 4, and each tab is connected with the bus board 4 to realize the circuit connection of each tab. As shown in fig. 1, the bus bar 4 is laid above the battery core, and bus bars connected with the tabs are provided on the bus bar 4, and the bus bars may be nickel plates or copper bars. The top end of each tab can be welded with the bus bar.

Cell radiator 3 is located below collector plate 4, and in one embodiment, cell radiator 3 is provided with linking bridge 5 that supports collector plate 4, makes collector plate 4 more firm, and collector plate 4 links to each other with linking bridge 5, and/or cell radiator 3 links to each other with linking bridge 5. In this way, the support fixation of the bus bar 4 can be enhanced.

The linking bridge includes insulating piece and protrusion in insulating piece one side and two collets of interval arrangement, and the insulating piece is connected with the top of electric core radiator, and two collets are connected with the cylinder manifold, and insulating piece and collets all adopt the preparation of insulating material, strengthen the insulating setting between cylinder manifold 4 and electric core radiator 3.

The cylinder manifold 4 can be fixedly connected with the connecting bracket 5 and is reinforced and fixed through the connecting bracket 5. The bus bar 4 can be fastened to the connecting bracket 5 by means of fasteners, or can be welded or glued. The cell radiator 3 may also be connected to the connecting bracket 5 by a fastener, or may be welded or bonded.

In the embodiment, the two insulating blocks are provided with screw holes which are in threaded connection with the studs, through holes for screws to pass through are formed in one side of each insulating block on each insulating block, the bus board 4 is connected with the insulating blocks through the screws, and the battery core radiator 3 is connected with the insulating plates through the screws.

The main parts of the battery cell for generating heat are a battery cell body and a lug. The lug is cooled, so that the temperature of the battery cell can be effectively prevented from being too high. Therefore, in one embodiment, the battery further comprises a heat absorbing member for absorbing heat from the tab, and the heat absorbing member is in direct or indirect contact with at least a part of the tab to absorb heat from the tab and reduce the cell temperature.

In one embodiment, the heat absorbing member is laid on the bus bar 4 and is in contact with each tab of the battery core, so that the heat absorbing member can effectively dissipate heat of each tab and has a remarkable heat dissipation effect, and the heat absorbing member can prevent the temperature difference of each tab or each battery core 7 from being large.

Fig. 6 and 7 show a heat absorbing member arrangement structure, in this embodiment, the battery further includes a glue filling cover 8, the glue filling cover 8 is box-shaped and covers the bus bar 4, the glue filling cover 8 includes a bottom plate and a peripheral side plate circumferentially surrounding the bottom plate, and the bottom plate and the peripheral side plate surround a glue filling cavity which is formed by the cover and covers the bus bar 4 and can contain glue. And a fourth colloid filled between the glue filling cover 8 and the bus board 4 is arranged in the glue filling cavity. The fourth colloid forms a heat absorbing member. So set up, can provide great heat capacity for the utmost point ear with 4 welded of cylinder manifold, effectively absorb the heat of utmost point ear, effectively reduce the temperature of utmost point ear.

Further, the fourth colloid is filled between the glue filling cover 8 and the first cell module 1, and between the glue filling cover 8 and the second cell module 2. Specifically, one end of the peripheral side plate, which is far away from the bus bar 4, is located on one side of the top seal edge of the battery cell, which is far away from the bus bar; and/or, the glue face of keeping away from busbar one side of fourth colloid is located the one side of keeping away from the busbar of the top banding limit of electric core, promptly, the top banding of electric core (including the top banding of first electric core module 1 and the top banding limit of second electric core module 2), and the projection on all curb plates is in the projection within range of fourth colloid on all curb plates. So set up, the fourth colloid not only fills between encapsulating lid 8 and electric core, and the top banding of the electric core that the thickness of fourth colloid surpassed plays protection electric core top banding effect.

The cell top seal edge refers to a seal edge at the top of the cell body (a portion not including the tab).

Along the height direction of the battery, the glue surface of the fourth glue body on the side far away from the bus bar 4 is positioned below the top sealing edge, and the distance between the glue surface and the top sealing edge can be 0.1-0.3mm, such as any one of 0.1mm, 0.2mm and 0.3 mm.

The basic principles of the present application have been described above with reference to specific embodiments, but it should be noted that advantages, effects, etc. mentioned in the present application are only examples and are not limiting, and the advantages, effects, etc. must not be considered to be possessed by various embodiments of the present application. Furthermore, the foregoing disclosure of specific details is for the purpose of illustration and description and is not intended to be limiting, since the foregoing disclosure is not intended to be exhaustive or to limit the disclosure to the precise details disclosed.

The components, devices referred to in this application are meant as illustrative examples only and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the drawings. These components, devices may be connected, arranged, configured in any manner, as will be appreciated by those skilled in the art. Words such as "including," "comprising," "having," and the like are open-ended words that mean "including, but not limited to," and are used interchangeably therewith. The words "or" and "as used herein mean, and are used interchangeably with, the word" and/or, "unless the context clearly dictates otherwise. The word "such as" is used herein to mean, and is used interchangeably with, the phrase "such as but not limited to".

It should also be noted that in the apparatus, devices of the present application, the components may be disassembled and/or reassembled. These decompositions and/or recombinations should be considered as equivalents of the present application.

The previous description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other aspects without departing from the scope of the application. Thus, the present application is not intended to be limited to the aspects shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

It should be understood that the terms "first", "second", "third", "fourth", "fifth" and "sixth" used in the description of the embodiments of the present application are only used for clearly explaining the technical solutions, and are not used for limiting the protection scope of the present application.

The foregoing description has been presented for purposes of illustration and description. Furthermore, the description is not intended to limit embodiments of the application to the form disclosed herein. While a number of example aspects and embodiments have been discussed above, those of skill in the art will recognize certain variations, modifications, alterations, additions and sub-combinations thereof.

The above description is only a preferred embodiment of the present application and should not be taken as limiting the present application, and any modifications, equivalents and the like that are within the spirit and scope of the present application should be included.

Claims (13)

1. The utility model provides a battery, its characterized in that, including the casing, be located electric core and electric core radiator in the casing, electric core includes first electric core module (1) and second electric core module (2), electric core radiator (3) are located first electric core module (1) with between second electric core module (2), the first side of electric core radiator (3) with first electric core module (1) contacts or links to each other, the second side with second electric core module (2) contact or link to each other.

2. The battery according to claim 1, characterized in that the third side and/or the fourth side and/or the bottom end of the cell heat sink (3) is in contact with or connected to the housing.

3. The battery according to claim 1, wherein the first cell module (1) and the second cell module (2) each comprise a plurality of cell units, each cell unit comprises an electrical core (7) and a thermally conductive sheet (6), at least a partial region of a first connecting surface of each thermally conductive sheet (6) is in contact with or connected to the electrical core (7), and at least a partial region of a second connecting surface is in contact with or connected to the cell heat sink (3).

4. The battery according to claim 3, wherein a first glue is arranged between the first connecting surface of the heat conducting sheet (6) and the electric core (7); and/or a second colloid is arranged between the second connecting surface of the heat conducting fin (6) and the battery core radiator (3).

5. The battery according to claim 4, wherein the heat-conducting sheet (6) is provided with a receiving groove for receiving the electric core (7), the bottom wall of the receiving groove forms the first connecting surface, and an outer side wall of the heat-conducting sheet (6) opposite to the side wall of the receiving groove forms the second connecting surface.

6. The battery according to claim 4, wherein on the first connecting surface of the heat conducting sheet (6), the first gel extends from one end to the other end, and on the first side surface and/or the second side surface of the cell heat sink (3), the second gel extends from one end to the other end;

or, on the first connecting surface of the heat conducting fin (6), the first colloid is in a multi-section shape arranged at intervals, and on the first side surface and/or the second side surface of the battery cell radiator (3), the second colloid extends from one end to the other end;

or, on the first connecting surface of the heat conducting fin (6), the first colloid extends from one end to the other end, and on the first side surface and/or the second side surface of the battery cell radiator (3), the second colloid is in a multi-segment shape arranged at intervals;

or, on the first connecting surface of the heat conducting fin (6), the first colloid is in a multi-segment shape arranged at intervals, and on the first side surface and/or the second side surface of the battery core radiator (3), the second colloid is in a multi-segment shape arranged at intervals.

7. The battery according to claim 1, further comprising a bus plate (4), wherein each tab of the first cell module (1) and each tab of the second cell module (2) are connected to the bus plate (4).

8. The battery according to claim 7, further comprising a connecting bracket (5) between the bus bar (4) and the cell heat sink (3);

the bus board (4) is connected with the connecting bracket (5); and/or the battery core radiator (3) is connected with the connecting bracket (5).

9. The battery according to claim 8, wherein the connecting bracket (5) comprises an insulating sheet and two insulating blocks protruding from one side of the insulating sheet and arranged at intervals, the insulating sheet is connected to the top end of the cell radiator (3), and the two insulating blocks are connected to the bus bar (4).

10. The battery according to claim 7, further comprising a glue filling cover (8), wherein the glue filling cover (8) comprises a bottom plate and a peripheral side plate circumferentially arranged along the bottom plate, the bottom plate and the peripheral side plate enclose a glue filling cavity covering the bus bar (4), and a fourth glue filled between the glue filling cover (8) and the bus bar (4) is arranged in the glue filling cavity.

11. The battery of claim 10, wherein one end of the peripheral side plate, which is far away from the bus bar (4), is located at one side of the top sealing edge of the cell, which is far away from the bus bar (4); and/or the glue surface of one side, far away from the bus board (4), of the fourth glue body is positioned on one side, far away from the bus board (4), of the top sealing edge of the battery cell.

12. The battery according to claim 2, wherein the cell heat sink (3) is provided with a heat dissipating through hole (31) and a fin (32) located in the heat dissipating through hole (31), two apertures of the heat dissipating through hole (31) are located on the third side surface and the fourth side surface, respectively, the housing is provided with openings opposite to the two apertures, respectively, and the fin (32) and the heat dissipating through hole (31) extend in the same direction.

13. The battery according to claim 3, wherein, in the arrangement direction of the cell units, both ends of the first cell module (1) and the second cell module (2) are covered with heat insulating sheets (9).

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