CN112864534A - Battery core assembly, battery core module, battery and device using battery - Google Patents
Battery core assembly, battery core module, battery and device using battery Download PDFInfo
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- CN112864534A CN112864534A CN202110226725.2A CN202110226725A CN112864534A CN 112864534 A CN112864534 A CN 112864534A CN 202110226725 A CN202110226725 A CN 202110226725A CN 112864534 A CN112864534 A CN 112864534A
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- 239000004020 conductor Substances 0.000 claims description 6
- 230000000712 assembly Effects 0.000 claims description 4
- 238000000429 assembly Methods 0.000 claims description 4
- 239000011800 void material Substances 0.000 claims description 4
- 239000008358 core component Substances 0.000 claims 1
- 238000003466 welding Methods 0.000 abstract description 22
- 230000017525 heat dissipation Effects 0.000 abstract description 5
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052744 lithium Inorganic materials 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 239000003292 glue Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 238000004806 packaging method and process Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The application provides an electric core subassembly, electric core module, battery and use device of battery relates to lithium cell technical field. An electric core assembly comprises an electric core and an adapter. The battery cell comprises a first polar piece, a second polar piece and a diaphragm arranged between the first polar piece and the second polar piece, and the polar lugs of the first polar pieces are arranged in a staggered and laminated mode to form a polar lug structure with a conductive portion. The interposer is electrically connected to the conductive portion. This application dislocation stromatolite sets up utmost point ear makes every utmost point ear expose partial conducting surface, realizes drawing of electric current through adaptor and utmost point ear end connection. The electric core assembly does not need transfer welding, and reduces the damage to the electrode lugs. The adaptor has large contact area with the lug, ensures the overcurrent capacity of the lug to a large degree, and improves the heat dissipation capacity of the lug.
Description
Technical Field
The application relates to the technical field of lithium batteries, in particular to an electric core assembly, an electric core module, a battery and a device using the battery.
Background
The conventional lithium ion battery adopts a direct welding or transfer welding mode to lead out the positive and negative electrode lugs. The direct welding or transfer welding mode has small welding area, is easy to generate insufficient welding, increases the internal resistance of the battery and increases the energy loss of the battery. In the process of charging and discharging the battery, the temperature of the lug at the welding position is too high, so that leakage at the lug glue packaging position is easily caused, and the safety risk is increased. Meanwhile, in the ultrasonic welding process, metal scraps at the current collector are easy to splash to the tab glue and the cell main body, the metal scraps splashed to the tab glue are bonded on the tab glue due to instantaneous high temperature and cannot be removed, and after subsequent cell packaging, the tab is conducted with the aluminum-plastic film shell to generate short circuit.
Disclosure of Invention
The utility model provides a device of core subassembly, electric core module, battery and use battery is provided, is connected the drawing forth that realizes electric current through the direct conductive part with utmost point ear of adaptor to improve the performance of electric core and battery.
In a first aspect, an embodiment of the present application provides an electric core assembly, which includes an electric core and an adaptor. The battery cell comprises a first polar piece, a second polar piece and a diaphragm arranged between the first polar piece and the second polar piece, and the polar lugs of the first polar pieces are arranged in a staggered and laminated mode to form a polar lug structure with a conductive portion. The adaptor is electrically connected with the conductive part of the tab.
The staggered lamination is provided with the lugs, so that each lug is exposed out of a part of the conductive surface, and the current is led out by connecting the adaptor and the conductive part. The electric core assembly does not need transfer welding, and reduces the damage to the electrode lugs. Meanwhile, the contact area between the adaptor and the lug is large, the overcurrent capacity of the lug is ensured to a large extent, and the heat dissipation capacity of the lug is improved.
In one possible embodiment, an adapter is electrically connected to the electrically conductive layer at the end of each tab.
Because the pole lug structure is of a stepped structure, the end connection of the adaptor and each pole lug can ensure the electric connection between the adaptor and the pole lug to a greater degree.
In a possible implementation manner, the size of the tab extending outwards from the root part is defined as the length of the tab, the size of the surface of the tab in the direction perpendicular to the length direction is defined as the width, the size of the tab in the width direction is the same, and the tabs of the first polarity pole pieces are sequentially arranged in a staggered and laminated manner to form a tab structure.
The lugs with the same staggered stacking size can form two conductive parts which are symmetrical, and the leading-out of the current of each lug is ensured. Compared with a tab structure of one conductive part, the overcurrent capacity and overcurrent reliability of the tab are improved, and the heat dissipation capacity of the tab is improved.
In one possible implementation manner, the tabs include a base film and conductive layers disposed on two side surfaces of the base film, a portion of the conductive layer is exposed at two ends of each tab in a width direction of the tab, the exposed portions of the conductive layers on the same side of the tabs form a first conductive portion, the exposed portions of the conductive layers on the other side of the tabs form a second conductive portion, and the first conductive portion and the second conductive portion are both electrically connected to the adaptor.
This application adopts the utmost point ear of the compound mass flow body, and the unable electricity of conducting layer of the utmost point ear both sides of the compound mass flow body is connected, and this structure makes the conducting layer homoenergetic of every utmost point ear both sides can contact with the switching piece, and great degree has guaranteed the ability of overflowing of utmost point ear, has improved the heat-sinking capability of utmost point ear.
In a possible implementation manner, the interposer includes a first interposer sheet and a second interposer sheet electrically connected to each other, the first interposer sheet has a first connection portion and a first conductive surface, the second interposer sheet has a second connection portion and a second conductive surface, the first connection portion and the second connection portion are fixedly connected to each other, the first conductive surface is electrically connected to the first conductive portion, and the second conductive surface is electrically connected to the second conductive portion.
The structure conducts current to the first conductive part and the second conductive part respectively, and therefore the overcurrent capacity of the lug is improved. The structure enables the lug to be pressed between the first switching piece and the second switching piece, stability of the lug can be guaranteed, and good contact between a conductive portion of the lug and a conductive surface of the switching piece is guaranteed. Furthermore, the gap between the first adapter plate and the second adapter plate is smaller than the thickness of the tab, so that the conductive part of the tab is ensured to be in good contact with the adapter plate.
In one possible embodiment, the adapter further comprises an elastic element for fastening, which is arranged between the first adapter sheet and the tab structure.
After the first switching sheet and the second switching sheet are pressed on the lug, the elastic piece and the lug are always kept in a pressure state, so that a conductive part of the lug and a conductive surface of the switching sheet are always kept in good contact.
In one possible implementation, the connection between the tab and the adapter has a void, and the void is filled with a conductive material.
Conductive materials are filled in the gap, so that the contact area between the lug and the adapter is increased, and further the conductivity and the flow conductivity are increased.
In a second aspect, a cell module is provided, which includes a plurality of electrically connected cell assemblies as described above. This electricity core module has better electrical property and longer life.
The third aspect provides a battery, including casing and above-mentioned electric core module, electric core module sets up in the casing. The battery has better electrical property and longer service life.
In a fourth aspect, there is provided an apparatus for using a battery, comprising the above battery for providing electrical energy. The device using the battery can be an automobile, a mechanical device, a living article and the like, and has better service life.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
FIG. 1 is a schematic structural diagram of an electrical core assembly provided in an embodiment of the present application;
fig. 2 is a schematic structural diagram of another view of the electric core assembly according to the embodiment of the present application;
fig. 3 is a schematic structural diagram of a battery cell provided in an embodiment of the present application;
fig. 4 is a schematic layer structure diagram of a tab provided in an embodiment of the present application;
fig. 5 is a schematic structural diagram of an adaptor according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of another view angle of the adaptor according to the embodiment of the present application;
fig. 7 is a schematic structural view of connection of an interposer and a tab according to an embodiment of the present application.
Icon: 10-an electrical core assembly; 100-electric core; 110-tab configuration; 111-a first conductive portion; 112-a second conductive portion; 113-a tab; 1131-basal membrane; 1133-conducting layer; 200-an adaptor; 210-a first transfer tab; 211-a first connection; 213-third connection; 215-a first conductive surface; 220-a second patch; 221-a second connection; 223-a fourth connection; 225-a second conductive surface; 230-a switching part; 240-elastic member.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, 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 some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. 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 application.
In the description of the present application, it should be noted that the terms "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the application usually place when using, and are only used for convenience in describing the present application and simplifying the description, but do not indicate or imply that the devices or elements that are referred to must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Some embodiments of the present application will be described in detail below with reference to the accompanying drawings.
Referring to fig. 1 and 2, fig. 1 and 2 are schematic structural diagrams of an electrical core assembly 10 according to the present embodiment.
The present embodiment provides an electric core assembly 10, which includes an electric core 100 and an adaptor 200. The adaptor sheet is used to connect with the tab 113 of the battery cell 100 to extract current. The battery cell 100 includes a first polarity pole piece, a second polarity pole piece, and a diaphragm disposed between the first polarity pole piece and the second polarity pole piece, and the battery cell 100 of the embodiment of the present application is formed in a winding or stacking manner. In this embodiment, the first polarity pole piece and the second polarity pole piece are a positive pole and a negative pole, respectively. The battery cell 100 has a positive electrode tab 113 and a negative electrode tab 113.
The conventional battery cell 100 is generally formed by stacking tabs 113 of pole pieces together, and the tabs 113 and the adapter piece are welded together by welding to achieve current extraction. During the welding process, the vibration and friction between the welding head and the tab 113 easily damage the conductive layer 1133 at the root of the tab 113, resulting in an increase in internal resistance of the battery cell 100 after welding. In the process of charging and discharging the battery, the temperature of the tab 113 at the welding position is too high, so that leakage at the glue packaging position of the tab 113 is easily caused, and the safety risk is increased. In order to reduce the influence of the welding point on the overcurrent of the tab 113, the welding area is generally small, so that the insufficient welding phenomenon is easy to occur, the internal resistance of the battery is increased, and the energy loss of the battery is increased.
Based on the problem of the existing battery cell 100, the structure of the tab 113 and the connection mode of the tab 113 and the adapter sheet are improved, so that the tab 113 can be connected with the adapter sheet without adopting a welding mode to lead out current.
Referring to fig. 3, fig. 3 is a schematic structural diagram of a battery cell 100 according to an embodiment of the present disclosure. In the embodiment of the present application, the tabs 113 of the first polarity pole pieces are arranged in a staggered and stacked manner to form the tab structure 110 with a conductive portion. The offset arrangement enables each tab 113 to be exposed on a portion of the surface, and since the surface of the tab 113 is generally a conductive material, each layer of tab 113 can be connected to the adaptor 200 through the exposed conductive surface to draw current. The embodiment of the application realizes that the tab 113 is electrically connected with the adaptor 200 by adopting a contact and attachment mode. In other embodiments of the present application, other connection manners may be adopted to electrically connect the tab 113 and the adaptor 200.
The tab 113 can be arranged in a staggered and laminated mode after pole pieces are stacked or wound by folding the tab 113 or cutting the tab 113. In this embodiment, the tab structure 110 of the second polarity pole piece is the same as the tab structure 110 of the first polarity pole piece, and in other embodiments of the present application, the tab structure 110 of the second polarity pole piece may be a conventional stacked structure or other structures.
In some embodiments of the present application, the tabs 113 of the first polarity pole pieces are arranged in a staggered and stacked manner to form a stepped structure. As one implementation, the dimension of the root of the tab 113 extending outward from the pole piece is defined as a length, the dimension of the surface of the tab 113 perpendicular to the length direction is defined as a width, the length of each tab 113 arranged in a lamination increases or decreases, the width is the same, and the stacked tabs 113 form a stepped structure at the end, that is, the tabs 113 have a conductive portion. The current is drawn by connecting the conductive portion to the interposer 200.
As another implementation manner, each tab 113 in this embodiment has the same size, and the cutting process of the tab 113 does not need to be changed, so that the cutting efficiency and the yield of the tab 113 are improved. After the tabs 113 are sequentially arranged in a staggered and laminated manner along the width direction, two stepped structures are respectively formed at two ends of the width of the tabs, and the two stepped structures are respectively located on two opposite side surfaces of the stacked tabs 113. According to the structure, the two conductive parts are formed by stacking the pole pieces in a staggered manner, so that the overcurrent capacity and overcurrent reliability of the pole lug 113 are improved, and the heat dissipation capacity of the pole lug 113 is improved.
Further, the dislocation size of each two adjacent tabs 113 is the same, and the structure enables the exposed conductive surfaces of the other tabs 113 to have the same size except the tab 113 arranged at the top of the tab structure 110, so that the contact area of each tab 113 and the adaptor 200 is the same, and the flow conductivity is uniform.
The pole piece that this application embodiment adopted includes the pole piece that contains the metal current collector and the pole piece that contains compound current collector. In the embodiment of the present application, the pole piece is a pole piece containing a composite current collector. In other embodiments of the present application, the pole pieces may include different current collectors to improve the flexibility of the structure of the battery assembly 10, and embody the advantages of different current collectors in the same battery cell 100 to balance the performance of the battery cell 100 in various aspects, thereby improving the comprehensive performance of the battery. Referring to fig. 4, fig. 4 is a schematic view of a layer structure of a tab 113 according to an embodiment of the present disclosure. The tab 113 includes a base film 1131 and conductive layers 1133 disposed on two side surfaces of the base film 1131, and the polarity of the conductive layers 1133 on the two side surfaces of the base film 1131 is the same because the pole pieces are positive pole pieces or negative pole pieces. After the tabs 113 are stacked, the adjacent two tabs 113 are not short-circuited.
Unlike the metal current collector tab 113, the conductive layers 1133 on both sides of the composite current collector tab 113 cannot be electrically connected, so in order to extract the current on the conductive layers 1133 on both sides of the composite current collector tab 113, the adapter sheet needs to be in direct contact with the conductive layers 1133 on both sides of the tab 113. Referring to fig. 2, two ends of the stepped tab structure 110 formed by stacking the first polarity electrode sheets in a staggered manner in the present embodiment respectively have a first conductive portion 111 and a second conductive portion 112, that is, the conductive layer 1133 exposed on the same side of the stacked tab 113 forms the first conductive portion 111, the conductive layer 1133 exposed on the other side forms the second conductive portion 112, and the first conductive portion 111 and the second conductive portion 112 are respectively located on two sides of the base film 1131. Specifically, referring to fig. 1, each layer of tab 113 in the tab structure 110 exposes the conductive layers 1133 on two sides, and compared with the other tab structures 110 that expose only one side of the conductive layer 1133, the conductive layers 1133 on two sides of each tab 113 in this embodiment can be connected and conducted with the adaptor 200, so that the current on the conductive layer 1133 of each tab 113 is directly led out, the overcurrent capability of the tab 113 is ensured to a greater extent, and the heat dissipation capability of the tab 113 is improved.
In other embodiments of the present application, each layer of tab 113 may be exposed out of a part of the conductive surface through other arrangement forms, and the size and the number of the exposed conductive surfaces of each layer of tab 113 may be adjusted according to actual needs.
As an implementation manner, a through hole with different apertures is arranged at a corresponding position of each layer of tab 113, and the aperture of the through hole enables each layer of tab 113 arranged in a stacked manner to expose a part of the conductive surface, so that current can be led out through electrical connection with the adaptor 200. The tab 113 with the through hole can be obtained by cutting the tab 113. Further, a through hole with different apertures is arranged at other corresponding positions of each layer of the tab 113, the apertures of the through holes are sequentially reduced or increased along a direction perpendicular to the surface of the tab 113, that is, the variation of the apertures of the through holes is opposite to that of the through holes, so that the two conductive layers 1133 on the tab 113 are exposed out of partial conductive surfaces, the current on the conductive layers 1133 on two sides of each tab 113 is directly led out through the adapter 200, and the overcurrent capacity of the tab 113 is ensured to a greater extent.
In the existing lithium battery, an adapter sheet is welded with the tab 113, and the adapter sheet is connected with the conductive surface of the tab structure 110 through the adapter sheet 200, and the adapter sheet can be fixedly connected with the tab structure 110 by a fixing member after the adapter sheet is contacted and attached to the tab structure 110 in the connection setting mode.
Referring to fig. 5 and 6, fig. 5 and 6 are schematic structural views of an adaptor 200 according to an embodiment of the present application. In some embodiments of the present application, the interposer 200 includes a first interposer web 210 and a second interposer web 220 that are electrically connected, where electrically connected means electrically conductive to each other. The first rotating sheet 210 and the second rotating sheet 220 have the same structure and are both long strips, and in other embodiments of the present application, the first rotating sheet 210 and the second rotating sheet 220 may have a triangular shape or the like. The first connection portion 211 and the third connection portion 213 are respectively disposed at two ends of the first interposer 210, the first conductive surface 215 is disposed at a middle position of the first interposer 210, the second connection portion 221 and the fourth connection portion 223 are respectively disposed at two ends of the second interposer 220, and the second conductive surface 225 is disposed at a middle position of the second interposer 220. After the first interposer 210 and the second interposer 220 enclose the tab 113 and are pressed, the first conductive surface 215 is electrically connected to the first conductive portion 111, the second conductive surface 225 is electrically connected to the second conductive portion 112, and the tab 113 is fixed by welding the first connection portion 211 and the second connection portion 221, and welding the third connection portion 213 and the fourth connection portion 223. The structure enables the tab 113 to be pressed between the first adapter sheet 210 and the second adapter sheet 220, so that the stability of the tab 113 can be ensured, and the conductive part of the tab 113 can be ensured to be in good contact with the conductive surface of the adapter sheet.
In the embodiment of the application, the adapter plate is made of a metal conductive material, and in the using process, the adapter plate and the tab 113 are mutually shifted and are not separated, so that the leading-out of the current is not influenced. In other embodiments of the present application, the first adaptor sheet 210 and the second adaptor sheet 220 may be fixedly connected by a fixing member such as a bolt.
The first adaptor sheet 210 or the second adaptor sheet 220 has an outwardly extending adaptor portion 230, and the battery cell assembly includes a housing (not shown) having an opening, and an end cap (not shown) disposed in the housing and covering the opening with the end cap. The battery cell 100 is connected with the terminal post on the end cover through the adapter 230.
The application provides an anodal utmost point ear 113 in the electric core subassembly 10, negative pole utmost point ear 113 is the stromatolite setting of all misplacing, make every anodal utmost point ear 113 and every negative pole utmost point ear 113 the conducting layer all can realize drawing forth of electric current through with adaptor 200, make electric core 100 have anodal utmost point ear structure 110 and the utmost point ear structure 110 of a negative pole just can have better electrical property, be convenient for adaptor 200 is connected with the utmost point post on the end cover, reduce adaptor 200's number, reduce the probability that electric core broke down.
In order to ensure that the conductive portion of the tab 113 is in good contact with the interposer, the gap between the first interposer 210 and the second interposer 220 is smaller than the thickness of the tab 113. Further, the adaptor 200 further includes an elastic member 240 for fastening, the elastic member 240 is disposed between the first adaptor sheet 210 and the tab structure 110, and/or the elastic member 240 is disposed between the second adaptor sheet 220 and the tab structure 110. After the tab 113 is pressed by the first adaptor sheet 210 and the second adaptor sheet 220, the elastic element 240 and the tab 113 are always kept in a pressure state, so that the conductive part of the tab 113 and the conductive surface of the adaptor sheet are always kept in good connection and conduction.
Referring to fig. 7, in the embodiment of the present application, the first conductive surface 215 of the first interposer 210 and the second conductive surface 225 of the second interposer 220 are planar surfaces, and after the first conductive surface 215 and the second conductive surface 225 are attached to the first conductive portion 111 and the second conductive portion 112 of the ladder structure, gaps are left between the first conductive surface 215 and the first conductive portion 111, and between the second conductive surface 225 and the second conductive portion 112. In this embodiment, the gap is filled with a conductive material, so as to increase the contact area between the tab 113 and the interposer, and further increase the conductivity and the current-conducting capability.
In other embodiments of the present application, the first conductive surface 215 of the first interposer 210 and the second conductive surface 225 of the second interposer 220 may be a stepped structure corresponding to the tab structure 110, and when the interposer is electrically connected to the tab 113, there is no gap between the interposer and the tab 113, and this structure may also increase the contact area between the tab 113 and the interposer, and increase the conductivity and the current guiding capability. In the actual production and use process, the structure of the rotary connecting piece can be adjusted according to actual needs.
When the plurality of battery cell modules are connected, the leading-out of current is realized by adopting a mode of contact of the switching piece and the electrode lug, so that welding is avoided.
The present application further provides a battery cell module (not shown) including a plurality of battery cell assemblies 10 as described above. The plurality of electric core assemblies 10 may be electrically connected in series, parallel, or series-parallel. This electricity core module has above-mentioned electricity core subassembly 10, has better electrical property and longer life.
The application also provides a battery (not shown in the figure), which comprises a shell and the battery cell module, wherein the battery cell module is arranged in the shell. The battery has better electrical property and longer service life.
The present application also provides a device (not shown) using a battery, comprising the above battery, the battery being used to provide electrical energy. The device using the battery can be an automobile, a mechanical device, a living article and the like, and has better service life.
The present application also provides a method of manufacturing a battery cell assembly 10, comprising: providing a plurality of first polarity pole pieces and a plurality of second polarity pole pieces, and alternately overlapping the first polarity pole pieces and the second polarity pole pieces in a one-piece mode. In the stacking process, the distance between the previous pole piece and the next pole piece is staggered by a certain dimension, so that the tab 113 of the next pole piece and the tab 113 which cannot completely cover the previous pole piece are enabled to be exposed, and each tab 113 can be exposed out of a part of the conductive layer 1133 to realize contact connection with the adaptor 200.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. An electric core component, which is characterized in that comprises
The battery cell comprises a first polar plate, a second polar plate and a diaphragm arranged between the first polar plate and the second polar plate, and the polar lugs of the first polar plates are arranged in a staggered and laminated manner to form a polar lug structure with a conductive part; and
and the adaptor is electrically connected with the conductive part of the lug.
2. The electric core assembly as set forth in claim 1 wherein said adaptor is electrically connected to the electrically conductive layer at the end of each of said tabs.
3. The electric core assembly as set forth in claim 1 or 2, wherein the size of the tab extending from the root is defined as the length of the tab, the size of the surface of the tab in the direction perpendicular to the length is defined as the width, the size of the tab in the width direction is the same, and the tabs of the first polarity pole pieces are sequentially arranged in a staggered and laminated manner along the width direction to form the tab structure.
4. The electric core assembly according to claim 3, wherein the tabs comprise a base film and conductive layers arranged on two side surfaces of the base film, each tab exposes a part of the conductive layer at two ends in the width direction, the exposed part of the conductive layer on the same side of the plurality of tabs forms a first conductive part, the exposed part of the conductive layer on the other side forms a second conductive part, and the first conductive part and the second conductive part are electrically connected with the adaptor.
5. The electrical core assembly of claim 4, wherein the interposer includes a first interposer sheet and a second interposer sheet electrically connected, the first interposer sheet having a first connection portion and a first conductive surface, the second interposer sheet having a second connection portion and a second conductive surface, the first connection portion and the second connection portion being fixedly connected, the first conductive surface being electrically connected to the first conductive portion, the second conductive surface being electrically connected to the second conductive portion.
6. The electrical core assembly of claim 5, wherein the adaptor further comprises a resilient member for fastening, the resilient member being disposed between the first adaptor piece and the tab structure.
7. The electric core assembly as claimed in claim 1, wherein the joint of the tab and the adaptor has a void, and the void is filled with a conductive material.
8. A battery cell module, comprising a plurality of electrically connected battery cell assemblies according to any of claims 1 to 7.
9. A battery comprising a housing and the cell module of claim 8, the cell module disposed within the housing.
10. A device using a battery, comprising the battery of claim 9, the battery being configured to provide electrical energy.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110226725.2A CN112864534B (en) | 2021-03-01 | 2021-03-01 | Battery cell assembly, battery cell module, battery and device using battery |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110226725.2A CN112864534B (en) | 2021-03-01 | 2021-03-01 | Battery cell assembly, battery cell module, battery and device using battery |
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| CN112864534A true CN112864534A (en) | 2021-05-28 |
| CN112864534B CN112864534B (en) | 2024-03-29 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113300056A (en) * | 2021-06-25 | 2021-08-24 | 厦门海辰新能源科技有限公司 | Tab connecting assembly, single battery, tab and adapter plate connecting method |
| CN113571846A (en) * | 2021-07-02 | 2021-10-29 | 厦门海辰新能源科技有限公司 | Current collector assembly, battery monomer, battery pack and manufacturing method of current collector assembly |
| CN114361725A (en) * | 2021-07-15 | 2022-04-15 | 北京卫蓝新能源科技有限公司 | Soft package battery pack |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106654139A (en) * | 2017-01-03 | 2017-05-10 | 曙鹏科技（深圳）有限公司 | Tab and electrode piece adapter coupling structure, battery cell and manufacturing method thereof |
| US20180026296A1 (en) * | 2015-02-18 | 2018-01-25 | Ttb Holding Company Limited | Lithium ion battery module with cooling system |
| CN110061182A (en) * | 2019-05-21 | 2019-07-26 | 宁德新能源科技有限公司 | Battery pole piece and battery core |
| CN210467966U (en) * | 2019-09-24 | 2020-05-05 | 浙江南都电源动力股份有限公司 | Tab dislocation connection structure, electric core group and battery pack |
| CN111916643A (en) * | 2020-07-29 | 2020-11-10 | 珠海冠宇动力电池有限公司 | Electricity core subassembly and battery package |
| CN214625305U (en) * | 2021-03-01 | 2021-11-05 | 厦门海辰新材料科技有限公司 | Battery core assembly, battery core module, battery and device using battery |
-
2021
- 2021-03-01 CN CN202110226725.2A patent/CN112864534B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180026296A1 (en) * | 2015-02-18 | 2018-01-25 | Ttb Holding Company Limited | Lithium ion battery module with cooling system |
| CN106654139A (en) * | 2017-01-03 | 2017-05-10 | 曙鹏科技（深圳）有限公司 | Tab and electrode piece adapter coupling structure, battery cell and manufacturing method thereof |
| CN110061182A (en) * | 2019-05-21 | 2019-07-26 | 宁德新能源科技有限公司 | Battery pole piece and battery core |
| CN210467966U (en) * | 2019-09-24 | 2020-05-05 | 浙江南都电源动力股份有限公司 | Tab dislocation connection structure, electric core group and battery pack |
| CN111916643A (en) * | 2020-07-29 | 2020-11-10 | 珠海冠宇动力电池有限公司 | Electricity core subassembly and battery package |
| CN214625305U (en) * | 2021-03-01 | 2021-11-05 | 厦门海辰新材料科技有限公司 | Battery core assembly, battery core module, battery and device using battery |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113300056A (en) * | 2021-06-25 | 2021-08-24 | 厦门海辰新能源科技有限公司 | Tab connecting assembly, single battery, tab and adapter plate connecting method |
| CN113571846A (en) * | 2021-07-02 | 2021-10-29 | 厦门海辰新能源科技有限公司 | Current collector assembly, battery monomer, battery pack and manufacturing method of current collector assembly |
| CN113571846B (en) * | 2021-07-02 | 2022-12-27 | 厦门海辰储能科技股份有限公司 | Current collector assembly, battery monomer, battery pack and manufacturing method of current collector assembly |
| CN114361725A (en) * | 2021-07-15 | 2022-04-15 | 北京卫蓝新能源科技有限公司 | Soft package battery pack |
| CN114361725B (en) * | 2021-07-15 | 2023-08-22 | 北京卫蓝新能源科技有限公司 | Soft package battery pack |
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| CN112864534B (en) | 2024-03-29 |
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