CN105449222A - Base unit and battery - Google Patents
Base unit and battery Download PDFInfo
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- CN105449222A CN105449222A CN201410441796.4A CN201410441796A CN105449222A CN 105449222 A CN105449222 A CN 105449222A CN 201410441796 A CN201410441796 A CN 201410441796A CN 105449222 A CN105449222 A CN 105449222A
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- 239000007774 positive electrode material Substances 0.000 claims abstract description 89
- 239000007773 negative electrode material Substances 0.000 claims abstract description 76
- 239000010405 anode material Substances 0.000 claims description 21
- 239000010406 cathode material Substances 0.000 claims description 12
- 238000004804 winding Methods 0.000 claims description 5
- 238000010030 laminating Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 47
- 239000000843 powder Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- QHGJSLXSVXVKHZ-UHFFFAOYSA-N dilithium;dioxido(dioxo)manganese Chemical compound [Li+].[Li+].[O-][Mn]([O-])(=O)=O QHGJSLXSVXVKHZ-UHFFFAOYSA-N 0.000 description 5
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 3
- 239000013543 active substance Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000011149 active material Substances 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
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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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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The invention discloses a base unit and a battery. The base unit comprises a first current collector set, a second current collector set and diaphragms, and the first current collector set and the second current collector are used for collecting currents; the first current collector set is composed of M first current collectors, each of the first current collectors is provided with a positive electrode material, one first current collector is provided with one type of the positive electrode material, and the quantity of the types of materials arranged on the first current collectors of the first current collector set is not greater than M; the second current collector set is composed of N second current collectors, each of the second current collectors is provided with a negative electrode material, one second current collector is only provided with one type of the negative electrode material, and the quantity of the types of materials arranged on the second current collectors of the second current collector set is not greater than N; the first current collectors and the second current collectors are arranged by rules, and adjacent current collectors are separated by the diaphragms; and the first current collectors are connected to the positive electrode end of the battery, and the second current collectors are connected to the negative electrode end of the battery, wherein M is an integer greater than 1, and/or N is an integer greater than 1.
Description
Technical Field
The invention relates to the technical field of intelligent electronic equipment, in particular to a basic unit and a battery.
Background
The basic unit of the current battery is shown in fig. 1, and comprises a first current collector 10, a second current collector 20 and a separator 30, wherein the current collectors are used for collecting current, a positive electrode material 40 is coated on the first current collector 10, and the first current collectors 10 are finally collected together to be used as the positive electrode of the battery; second current collectors 20 are coated with negative electrode material 50, second current collectors 20 are finally collected together as a negative electrode of a battery, and separator 30 serves to separate positive electrode material 40 from negative electrode material 50. In the prior art, a battery cell is usually formed by winding or laminating a large number of the above-mentioned base units to form a battery.
In the prior art, the anode material in the basic unit only consists of one active substance, and similarly, the cathode material also consists of one active substance; the positive and negative electrode active materials of the battery cannot simultaneously take various advantages into consideration due to different properties of the materials, and usually can meet the requirement of another property only by sacrificing one property. For example: the battery for the notebook computer needs good material stability and higher energy density, so a ternary anode material is selected; and the batteries of the electric vehicle are connected in series and in parallel, and the requirements on the consistency and the cycle life of the battery core are high, so that a lithium iron phosphate or lithium manganate anode material is selected.
There is also a solution in the prior art: in the production process of the battery core, different battery active materials are mixed to take the characteristics of different materials into consideration, for example, a ternary material and a lithium manganate material are mixed to be used as a positive electrode material of the battery core. However, due to different material characteristics (such as expansion coefficient, etc.), after the electrode material is mixed and formed, the powder is easy to fall off in the circulation process, thereby seriously affecting the service life of the battery core.
Therefore, it is an urgent technical problem to provide a base unit and a battery that can satisfy various material characteristics and avoid the problem of powder removal caused by mixing different materials.
Disclosure of Invention
In order to solve the existing technical problems, embodiments of the present invention provide a base unit and a battery.
The embodiment of the invention provides a basic unit, which is applied to a battery and comprises a first current collector set, a second current collector set and a diaphragm, wherein the first current collector set and the second current collector set are used for collecting current;
the first current collector set consists of M first current collectors, each first current collector is provided with a positive electrode material, one type of positive electrode material is arranged on each first current collector, and the types of the positive electrode materials arranged on the first current collectors in the first current collector set are not more than M;
the second current collector set consists of N second current collectors, each second current collector is provided with a negative electrode material, one type of negative electrode material is arranged on one first current collector, and the types of the negative electrode materials arranged on the second current collectors in the second current collector set are not more than N;
the first current collector provided with the anode material and the second current collector provided with the cathode material are arranged according to a preset rule, and adjacent current collectors are separated by the diaphragm;
all of the first current collectors are for connection to the positive terminal of the battery and all of the second current collectors are for connection to the negative terminal of the battery;
wherein M is an integer greater than 1, and/or N is an integer greater than 1, and the values of M and N are the same or different.
In the above scheme, the preset rule is: every m first current collectors in the first current collector set are adjacently arranged, every n second current collectors in the second current collector set are adjacently arranged, and the m adjacently arranged first current collectors and the n adjacently arranged second current collectors are alternately arranged;
wherein M is more than or equal to 1 and less than or equal to M, N is more than or equal to 1 and less than or equal to N, M and N are integers, and the values of M and N are the same or different.
In the scheme, positive electrode materials are arranged on the front side and the back side of the first current collector, and the types of the positive electrode materials arranged on the front side and the back side of the same first current collector are the same; and/or the presence of a gas in the gas,
and the front side and the back side of the second current collector are both provided with negative electrode materials, and the negative electrode materials on the front side and the back side of the second current collector are of the same type.
In the above scheme, the positive electrode material is coated on the first current collector, and the negative electrode material is coated on the second current collector.
The embodiment of the invention also provides a battery, which comprises K basic units, wherein K is a positive integer, each basic unit comprises a first current collector set, a second current collector set and a diaphragm, and the first current collector set and the second current collector set are used for collecting current;
the first current collector set consists of M first current collectors, each first current collector is provided with a positive electrode material, one type of positive electrode material is arranged on each first current collector, and the types of the positive electrode materials arranged on the first current collectors in the first current collector set are not more than M;
the second current collector set consists of N second current collectors, each second current collector is provided with a negative electrode material, one type of negative electrode material is arranged on one first current collector, and the types of the negative electrode materials arranged on the second current collectors in the second current collector set are not more than N;
the first current collector provided with the anode material and the second current collector provided with the cathode material are arranged according to a preset rule, and adjacent current collectors are separated by the diaphragm;
all the first current collectors are connected with the positive end of the battery, and all the second current collectors are connected with the negative end of the battery;
wherein M is an integer greater than 1, and/or N is an integer greater than 1, and the values of M and N are the same or different.
In the above scheme, the preset rule is: every m first current collectors in the first current collector set are adjacently arranged, every n second current collectors in the second current collector set are adjacently arranged, and the m adjacently arranged first current collectors and the n adjacently arranged second current collectors are alternately arranged;
wherein M is more than or equal to 1 and less than or equal to M, N is more than or equal to 1 and less than or equal to N, M and N are integers, and the values of M and N are the same or different.
In the above scheme, the battery further includes a control unit, the control unit connects each of the first current collectors and the second current collectors, the control unit controls each of the first current collectors to connect or disconnect with the positive electrode of the battery through a controllable switch, and the control unit controls each of the second current collectors to connect or disconnect with the negative electrode of the battery through a controllable unit.
In the scheme, positive electrode materials are arranged on the front side and the back side of the first current collector, and the types of the positive electrode materials arranged on the front side and the back side of the same first current collector are the same; and/or the presence of a gas in the gas,
and the front side and the back side of the second current collector are both provided with negative electrode materials, and the negative electrode materials on the front side and the back side of the second current collector are of the same type.
In the above scheme, the K base units form the battery core of the battery in a winding or lamination manner.
In the above scheme, the positive electrode material is coated on the first current collector, and the negative electrode material is coated on the second current collector.
According to the basic unit and the battery provided by the embodiment of the invention, the use of various types of positive electrode materials and/or negative electrode materials in one battery is realized, so that the characteristics of various materials can be considered in one battery, the characteristic complementarity among different materials is enhanced, and the excellent performance of each material in a battery cell can be exerted; in addition, by adopting the special basic unit structure of the embodiment of the invention, different materials are not mixed, the phenomenon of powder shedding in circulation caused by different characteristics of the materials is avoided, and the service life of the battery cell is ensured.
In addition, the specific control unit of the invention can realize the selection and the use of different materials by controlling the connection or the disconnection between each current collector and the positive and negative ends of the battery so as to adapt to different external environment requirements or the internal conditions of the battery.
Drawings
Fig. 1 is a schematic diagram of a basic cell structure of a battery in the prior art;
fig. 2 is a schematic structural diagram of a basic unit according to a third embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a base unit according to a fourth embodiment of the present invention;
fig. 4 is a schematic structural diagram of a basic unit according to a fifth embodiment of the present invention;
fig. 5 is a schematic structural diagram of a basic unit according to a sixth embodiment of the present invention;
fig. 6 is a schematic diagram of a battery structure according to a seventh embodiment of the invention.
Detailed Description
The technical solution of the present invention is further elaborated below with reference to the drawings and the specific embodiments.
Example one
The base unit of the battery provided by the first embodiment of the invention comprises a first current collector set, a second current collector set and a diaphragm, wherein the first current collector set and the second current collector set are used for collecting current;
the first current collector set consists of M first current collectors, each first current collector is provided with a positive electrode material, a single first current collector is provided with a type of positive electrode material, and the types of the positive electrode materials arranged on the first current collectors in the first current collector set are not more than M;
the second current collector set consists of N second current collectors, each second current collector is provided with a negative electrode material, a single first current collector is provided with one type of negative electrode material, and the types of the negative electrode materials arranged on the second current collectors in the second current collector set are not more than N;
the first current collector provided with the anode material and the second current collector provided with the cathode material are arranged according to a preset rule, and adjacent current collectors are separated by a diaphragm;
all of the first current collectors are for connection to the positive terminal of the battery and all of the second current collectors are for connection to the negative terminal of the battery;
wherein M is an integer greater than 1 and/or N is an integer greater than 1, and the values of M and N can be the same or different.
Wherein, the preset rule can be: every m first current collectors in the first current collector set are adjacently arranged, every n second current collectors in the second current collector set are adjacently arranged, and the m adjacently arranged first current collectors and the n adjacently arranged second current collectors are alternately arranged; m is more than or equal to 1 and less than or equal to M, N is more than or equal to 1 and less than or equal to N, M and N are integers, and the values of M and N can be the same or different. It should be noted that the preset rule of the embodiment of the present invention is not limited to the above example, and any current collector arrangement rule suitable for being implemented in the embodiment of the present invention in practical applications should all belong to the protection scope of the embodiment of the present invention; however, no matter what rule, the following preconditions are satisfied: adjacent current collectors are separated by a separator, and adjacent different materials are separated by a separator.
In one embodiment, positive electrode materials are arranged on both the front and back sides of the first current collector, and the positive electrode materials arranged on the front and back sides of the same first current collector are the same; and/or the presence of a gas in the gas,
the positive and negative sides of the second current collector are provided with negative materials, and the positive and negative materials on the positive and negative sides of the same second current collector are the same.
In one embodiment, the positive electrode material may be coated on the first current collector and the negative electrode material may be coated on the second current collector. Of course, the embodiments of the present invention are not limited to the manner of coating the positive electrode material on the first current collector and the negative electrode material on the second current collector.
According to the first embodiment of the invention, multiple types of positive electrode materials and/or negative electrode materials are used in one battery, so that the characteristics of multiple materials can be considered for one battery, the characteristic complementarity between different materials is enhanced, and the excellent performance of each material in the battery cell can be exerted; in addition, by adopting the special basic unit structure of the embodiment of the invention, different materials are not mixed, the phenomenon of powder shedding in circulation caused by different characteristics of the materials is avoided, and the service life of the battery cell is ensured.
Example two
The second embodiment of the invention provides a battery, which comprises K basic units, wherein K is a positive integer, each basic unit comprises a first current collector set, a second current collector set and a diaphragm, and the first current collector set and the second current collector set are used for collecting current;
the first current collector set consists of M first current collectors, each first current collector is provided with a positive electrode material, a single first current collector is provided with a type of positive electrode material, and the types of the positive electrode materials arranged on the first current collectors in the first current collector set are not more than M;
the second current collector set consists of N second current collectors, each second current collector is provided with a negative electrode material, a single first current collector is provided with one type of negative electrode material, and the types of the negative electrode materials arranged on the second current collectors in the second current collector set are not more than N;
the first current collector provided with the anode material and the second current collector provided with the cathode material are arranged according to a preset rule, and adjacent current collectors are separated by a diaphragm;
all the first current collectors are connected with the positive end of the battery, and all the second current collectors are connected with the negative end of the battery;
wherein M is an integer greater than 1, and/or N is an integer greater than 1, and the values of M and N are the same or different.
Wherein, the preset rule can be: every m first current collectors in the first current collector set are adjacently arranged, every n second current collectors in the second current collector set are adjacently arranged, and the m adjacently arranged first current collectors and the n adjacently arranged second current collectors are alternately arranged; m is more than or equal to 1 and less than or equal to M, N is more than or equal to 1 and less than or equal to N, M and N are integers, and the values of M and N are the same or different. It should be noted that the preset rule of the embodiment of the present invention is not limited to the above example, and any current collector arrangement rule suitable for being implemented in the embodiment of the present invention in practical applications should all belong to the protection scope of the embodiment of the present invention; however, no matter what rule, the following preconditions are satisfied: adjacent current collectors are separated by a separator, and adjacent different materials are separated by a separator.
In one embodiment, the battery may further include a control unit, the control unit connects each of the first current collectors and the second current collector, the control unit controls connection or disconnection between each of the first current collectors and a positive electrode of the battery through the controllable switch, and the control unit controls connection or disconnection between each of the second current collectors and a negative electrode of the battery through the controllable unit.
In one embodiment, positive electrode materials are arranged on both the front and back sides of the first current collector, and the types of the positive electrode materials arranged on the front and back sides of the same first current collector are the same; and/or the presence of a gas in the gas,
the positive and negative sides of the second current collector are provided with negative materials, and the types of the negative materials arranged on the positive and negative sides of the same second current collector are the same.
The K base units may form the battery cell in the embodiment of the present invention by winding or lamination.
Wherein, the positive electrode material can be coated on the first current collector, and the negative electrode material can be coated on the second current collector. Of course, the embodiments of the present invention are not limited to the manner of coating the positive electrode material on the first current collector and the negative electrode material on the second current collector.
According to the second embodiment of the invention, multiple types of positive electrode materials and/or negative electrode materials are used in one battery, so that the characteristics of multiple materials can be considered for one battery, the characteristic complementarity between different materials is enhanced, and the excellent performance of each material in the battery cell can be exerted; in addition, by adopting the special basic unit structure of the embodiment of the invention, different materials are not mixed, the phenomenon of powder shedding in circulation caused by different characteristics of the materials is avoided, and the service life of the battery cell is ensured.
In addition, the specific control unit in the embodiment of the invention can realize the selection and the use of different materials by controlling the connection or the disconnection between each current collector and the positive and negative ends of the battery so as to adapt to different external environment requirements or the internal conditions of the battery. For example: for a battery containing two anode materials, namely a ternary material and lithium manganate, the characteristics of good stability, cell consistency and long cycle life of the battery can be considered; when the requirement of the external application environment on the stability of the battery is high and the requirement on the consistency of the battery core is low, the connection between the current collector coated with the lithium manganate and the positive electrode of the battery can be selectively disconnected, and the connection between the current collector coated with the ternary material and the positive electrode of the battery is reserved so as to adapt to the environmental requirement; when the external environment has high requirements on the consistency and the cycle life of the battery cell and low requirements on the stability of the battery, the connection between the current collector coated with the ternary material and the battery anode can be selectively disconnected, and the connection between the current collector coated with the lithium manganate and the battery anode is reserved so as to meet the environmental requirements.
EXAMPLE III
In a basic unit structure provided in the third embodiment of the present invention, as shown in fig. 2, a basic unit includes a first current collector set, a second current collector set, and a separator; wherein,
the first current collector set is composed of two first current collectors, namely a first current collector 11 and a first current collector 12, wherein a positive electrode material 01 is coated on the first current collector 11, a positive electrode material 02 is coated on the first current collector 12, and the positive electrode material 01 and the positive electrode material 02 are respectively different types of positive electrode materials, such as: the anode material 01 can be selected as a ternary anode material, and the anode material 02 can be selected as lithium iron phosphate;
it should be noted that only one type of positive electrode material is disposed on a single first current collector, that is, multiple types of mixed positive electrode materials are not used on the same first current collector;
the second current collector set consists of one second current collector, namely a second current collector 21, the negative electrode material 03 is coated on the second current collector 21, and the negative electrode material 03 is only one type of negative electrode material, namely, only one type of negative electrode material is arranged on a single second current collector, and multiple types of mixed negative electrode materials are not used;
in the third embodiment of the invention, the first current collector is coated with the anode material only on one side, and the second current collector is coated with the cathode material only on one side; the first current collectors 11 coated with the positive electrode material 01, the first current collectors 12 coated with the positive electrode material 02, and the second current collectors 21 coated with the negative electrode material 03 are alternately arranged, and adjacent current collectors are separated by a separator 30; the specific arrangement is shown in fig. 2.
Wherein the first current collector 11 and the first current collector 12 are for connection to the positive terminal of the battery, and the second current collector 21 is for connection to the negative terminal of the battery.
Example four
In a basic unit structure provided in the fourth embodiment of the present invention, as shown in fig. 3, a basic unit includes a first current collector set, a second current collector set, and a separator; wherein,
the first current collector set is composed of two first current collectors, namely a first current collector 11 and a first current collector 12, wherein a positive electrode material 01 is coated on the first current collector 11, a positive electrode material 02 is coated on the first current collector 12, and the positive electrode material 01 and the positive electrode material 02 are respectively different types of positive electrode materials, such as: the anode material 01 can be selected as a ternary anode material, and the anode material 02 can be selected as lithium iron phosphate;
it should be noted that only one type of positive electrode material is disposed on a single first current collector, that is, multiple types of mixed positive electrode materials are not used on the same first current collector;
the second current collector set consists of one second current collector, namely a second current collector 21, the negative electrode material 03 is coated on the second current collector 21, and the negative electrode material 03 is only one type of negative electrode material, namely, only one type of negative electrode material is arranged on a single second current collector, and multiple types of mixed negative electrode materials are not used;
in the fourth embodiment of the invention, the first current collector is coated with the anode material on both sides, and the second current collector is also coated with the cathode material on both sides; the first current collectors 11 coated with the positive electrode material 01, the first current collectors 12 coated with the positive electrode material 02, and the second current collectors 21 coated with the negative electrode material 03 are alternately arranged, and adjacent current collectors are separated by a separator 30; the specific arrangement is shown in fig. 3.
Wherein the first current collector 11 and the first current collector 12 are for connection to the positive terminal of the battery, and the second current collector 21 is for connection to the negative terminal of the battery.
EXAMPLE five
In a basic unit structure provided in the fifth embodiment of the present invention, as shown in fig. 4, a basic unit includes a first current collector set, a second current collector set, and a separator; wherein,
the first current collector set consists of one first current collector, namely a first current collector 11, wherein the positive electrode material 01 is coated on the first current collector 11, and the positive electrode material 01 is only one type of positive electrode material, namely, only one type of positive electrode material is arranged on a single first current collector, and multiple types of mixed positive electrode materials are not used;
the second current collector set consists of two second current collectors, namely a second current collector 21 and a second current collector 22, wherein the second current collector 21 is coated with a negative electrode material 03, the second current collector 22 is coated with a negative electrode material 04, and the negative electrode material 03 and the negative electrode material 04 are different types of negative electrode materials respectively;
it should be noted that only one type of negative electrode material is provided on a single second current collector, that is, multiple types of mixed negative electrode materials are not used on the same second current collector;
in the fifth embodiment of the invention, the first current collector is coated with the anode material only on one side, and the second current collector is coated with the cathode material only on one side; the first current collector 11 coated with the positive electrode material 01, the second current collector 21 coated with the negative electrode material 03, and the second current collector 22 coated with the negative electrode material 04 are alternately arranged, and adjacent current collectors are separated by a separator 30; the specific arrangement is shown in fig. 4.
Wherein the first current collector 11 is for connection to the positive terminal of the battery and the second current collectors 21 and 22 are for connection to the negative terminal of the battery.
EXAMPLE six
In a basic unit structure provided in a sixth embodiment of the present invention, as shown in fig. 5, a basic unit includes a first current collector set, a second current collector set, and a separator; wherein,
the first current collector set consists of two first current collectors, namely a first current collector 11 and a first current collector 12, wherein a positive electrode material 01 is coated on the first current collector 11, a positive electrode material 02 is coated on the first current collector 12, and the positive electrode material 01 and the positive electrode material 02 are respectively different types of positive electrode materials;
the second current collector set consists of two second current collectors, namely a second current collector 21 and a second current collector 22, wherein the second current collector 21 is coated with a negative electrode material 03, the second current collector 22 is coated with a negative electrode material 04, and the negative electrode material 03 and the negative electrode material 04 are different types of negative electrode materials respectively;
it should be noted that only one type of positive electrode material is disposed on a single first current collector, that is, multiple types of mixed positive electrode materials are not used on the same first current collector; only one type of negative electrode material is arranged on a single second current collector, namely, the negative electrode materials mixed by multiple types are not used on the same second current collector;
in the sixth embodiment of the invention, the first current collector is coated with the anode material only on one side, and the second current collector is coated with the cathode material only on one side; the first current collector 11 coated with the positive electrode material 01 and the first current collector 12 coated with the positive electrode material 02 are arranged adjacently, the first current collector 11 and the first current collector 12 which are arranged adjacently are alternately arranged with the second current collector 21 coated with the negative electrode material 03 and the second current collector 22 coated with the negative electrode material 04, and the adjacent current collectors are separated by the diaphragm 30; the specific arrangement is shown in fig. 5.
Through the third embodiment to the sixth embodiment of the invention, the use of various types of positive electrode materials and/or negative electrode materials in one battery is realized, so that the characteristics of various materials can be considered in one battery, the characteristic complementarity among different materials is enhanced, and the excellent performance of each material in the battery cell can be exerted; in addition, by adopting the special basic unit structure of the embodiment of the invention, different materials are not mixed, the phenomenon of powder shedding in circulation caused by different characteristics of the materials is avoided, and the service life of the battery cell is ensured.
EXAMPLE seven
As shown in fig. 6, a battery provided by a seventh embodiment of the present invention includes K basic units, and the K basic units form a battery cell by winding or laminating.
Wherein each base unit comprises a first current collector set, a second current collector set, and a separator;
the first current collector set consists of two first current collectors, namely a first current collector 11 and a first current collector 12, wherein a positive electrode material 01 is coated on the first current collector 11, a positive electrode material 02 is coated on the first current collector 12, and the positive electrode material 01 and the positive electrode material 02 are respectively different types of positive electrode materials;
the second current collector set consists of one second current collector, namely a second current collector 21, and the negative electrode material 03 is coated on the second current collector 21;
in the seventh embodiment of the invention, the first current collector is coated with the anode material only on one side, and the second current collector is coated with the cathode material only on one side; the first current collectors 11 coated with the positive electrode material 01, the first current collectors 12 coated with the positive electrode material 02, and the second current collectors 21 coated with the negative electrode material 03 are alternately arranged, and adjacent current collectors are separated by a separator 30;
all the first current collectors in the battery are connected with the positive end of the battery, and all the second current collectors are connected with the negative end of the battery;
the battery further comprises a control unit 40 connecting each first current collector and each second current collector in the battery, the control unit 40 controlling connection or disconnection between each first current collector and the positive electrode of the battery through a controllable switch, and the control unit 40 controlling connection or disconnection between each second current collector and the negative electrode of the battery through a controllable unit.
According to the seventh embodiment of the invention, multiple types of positive electrode materials and/or negative electrode materials are used in one battery, so that the characteristics of multiple materials can be considered in one battery, the characteristic complementarity between different materials is enhanced, and the excellent performance of each material in the battery cell can be exerted; in addition, by adopting the special basic unit structure of the embodiment of the invention, different materials are not mixed, the phenomenon of powder shedding in circulation caused by different characteristics of the materials is avoided, and the service life of the battery cell is ensured.
In addition, the specific control unit in the embodiment of the invention can realize the selection and the use of different materials by controlling the connection or the disconnection between each current collector and the positive and negative ends of the battery so as to adapt to different external environment requirements or the internal conditions of the battery.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. A base unit for use in a battery, the base unit comprising a first set of current collectors, a second set of current collectors, and a separator, the first and second sets of current collectors being configured to collect current;
the first current collector set consists of M first current collectors, each first current collector is provided with a positive electrode material, one type of positive electrode material is arranged on each first current collector, and the types of the positive electrode materials arranged on the first current collectors in the first current collector set are not more than M;
the second current collector set consists of N second current collectors, each second current collector is provided with a negative electrode material, one type of negative electrode material is arranged on one first current collector, and the types of the negative electrode materials arranged on the second current collectors in the second current collector set are not more than N;
the first current collector provided with the anode material and the second current collector provided with the cathode material are arranged according to a preset rule, and adjacent current collectors are separated by the diaphragm;
all of the first current collectors are for connection to the positive terminal of the battery and all of the second current collectors are for connection to the negative terminal of the battery;
wherein M is an integer greater than 1, and/or N is an integer greater than 1, and the values of M and N are the same or different.
2. The infrastructure element of claim 1, wherein the predetermined rule is: every m first current collectors in the first current collector set are adjacently arranged, every n second current collectors in the second current collector set are adjacently arranged, and the m adjacently arranged first current collectors and the n adjacently arranged second current collectors are alternately arranged;
wherein M is more than or equal to 1 and less than or equal to M, N is more than or equal to 1 and less than or equal to N, M and N are integers, and the values of M and N are the same or different.
3. The base unit of claim 1 or 2,
positive electrode materials are arranged on the front side and the back side of the first current collector, and the types of the positive electrode materials arranged on the front side and the back side of the same first current collector are the same; and/or the presence of a gas in the gas,
and the front side and the back side of the second current collector are both provided with negative electrode materials, and the negative electrode materials on the front side and the back side of the second current collector are of the same type.
4. The base unit according to claim 1 or 2, characterized in that the positive electrode material is coated on the first current collector and the negative electrode material is coated on the second current collector.
5. A battery comprising K base units, K being a positive integer, each of said base units comprising a first set of current collectors, a second set of current collectors, and a separator, said first and second sets of current collectors being configured to collect current;
the first current collector set consists of M first current collectors, each first current collector is provided with a positive electrode material, one type of positive electrode material is arranged on each first current collector, and the types of the positive electrode materials arranged on the first current collectors in the first current collector set are not more than M;
the second current collector set consists of N second current collectors, each second current collector is provided with a negative electrode material, one type of negative electrode material is arranged on one first current collector, and the types of the negative electrode materials arranged on the second current collectors in the second current collector set are not more than N;
the first current collector provided with the anode material and the second current collector provided with the cathode material are arranged according to a preset rule, and adjacent current collectors are separated by the diaphragm;
all the first current collectors are connected with the positive end of the battery, and all the second current collectors are connected with the negative end of the battery;
wherein M is an integer greater than 1, and/or N is an integer greater than 1, and the values of M and N are the same or different.
6. The battery according to claim 5, wherein the preset rule is: every m first current collectors in the first current collector set are adjacently arranged, every n second current collectors in the second current collector set are adjacently arranged, and the m adjacently arranged first current collectors and the n adjacently arranged second current collectors are alternately arranged;
wherein M is more than or equal to 1 and less than or equal to M, N is more than or equal to 1 and less than or equal to N, M and N are integers, and the values of M and N are the same or different.
7. The battery according to claim 5 or 6, wherein the battery further comprises a control unit, the control unit is connected with each of the first current collectors and the second current collectors, the control unit controls the connection or disconnection between each of the first current collectors and the positive electrode of the battery through a controllable switch, and the control unit controls the connection or disconnection between each of the second current collectors and the negative electrode of the battery through a controllable unit.
8. The battery according to claim 5 or 6,
positive electrode materials are arranged on the front side and the back side of the first current collector, and the types of the positive electrode materials arranged on the front side and the back side of the same first current collector are the same; and/or the presence of a gas in the gas,
and the front side and the back side of the second current collector are both provided with negative electrode materials, and the negative electrode materials on the front side and the back side of the second current collector are of the same type.
9. The battery of claim 5 or 6, wherein the K base units are formed into the cell of the battery by winding or laminating.
10. The battery of claim 5 or 6, wherein the positive electrode material is coated on the first current collector and the negative electrode material is coated on the second current collector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410441796.4A CN105449222A (en) | 2014-09-01 | 2014-09-01 | Base unit and battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410441796.4A CN105449222A (en) | 2014-09-01 | 2014-09-01 | Base unit and battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105449222A true CN105449222A (en) | 2016-03-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410441796.4A Pending CN105449222A (en) | 2014-09-01 | 2014-09-01 | Base unit and battery |
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| Country | Link |
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| CN (1) | CN105449222A (en) |
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| CN109888360A (en) * | 2019-01-26 | 2019-06-14 | 温在东 | Laminated cell structure and suitable for its split type lamination, the production method of rubberizing |
| WO2021243584A1 (en) * | 2020-06-02 | 2021-12-09 | 宁德时代新能源科技股份有限公司 | Electrode assemblies, and battery, apparatus, manufacturing method and manufacturing apparatus related thereto |
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| CN109888360A (en) * | 2019-01-26 | 2019-06-14 | 温在东 | Laminated cell structure and suitable for its split type lamination, the production method of rubberizing |
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