CN114597597B - Battery cell arrangement structure of battery pack and arrangement method thereof - Google Patents
Battery cell arrangement structure of battery pack and arrangement method thereof Download PDFInfo
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- CN114597597B CN114597597B CN202210079630.7A CN202210079630A CN114597597B CN 114597597 B CN114597597 B CN 114597597B CN 202210079630 A CN202210079630 A CN 202210079630A CN 114597597 B CN114597597 B CN 114597597B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/509—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the type of connection, e.g. mixed connections
- H01M50/51—Connection only in series
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/514—Methods for interconnecting adjacent batteries or cells
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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Abstract
The invention provides a battery cell arrangement structure of a battery pack, which comprises a plurality of battery cells, a plurality of groups of battery cell modules and a battery pack module; each group of the battery cell module is formed by connecting two battery cells in parallel; the battery pack module is formed by a plurality of groups of battery cell modules in a mode of three rows from top to bottom and each row is embedded in sequence; the battery pack module is provided with an electric connecting piece on the upper side or the lower side, the electric connecting piece connects the poles of every two adjacent groups of battery cell modules in series in a S-shaped wiring mode through one corner of any one row of the upper row or the lower row of the battery pack module, and the poles of the two groups of battery cell modules connected in series are opposite in polarity. The invention also provides a battery cell arrangement method of the battery pack. According to the invention, the traditional S-shaped wiring mode is replaced by a structure that the poles of every two adjacent groups of battery cell modules are sequentially connected in series from a certain angle to a certain side of the battery pack module in an S-shaped wiring mode through the electric connecting piece, so that the creepage distance of the electric connecting piece is reduced, and the pressure difference between the adjacent battery cells in the battery pack is effectively reduced.
Description
Technical Field
The invention relates to the technical field of battery packs of two-wheeled electric vehicles, in particular to a battery cell arrangement structure of a battery pack and an arrangement method thereof.
Background
With the development of battery technology, two-wheeled electric vehicles are widely used in the field of travel, and due to the continuous increase of the endurance mileage of the two-wheeled electric vehicles, the lithium iron phosphate battery is gradually replacing the traditional lead-acid battery with the advantage of high energy density.
The lithium iron phosphate core that adopts in two-wheeled electric motor car battery package is mostly cylindrical electric core, and out of the security consideration, current battery package electric core adopts earlier the mode of establishing ties then parallelly connected earlier to connect more, therefore the condition of arranging of electric core directly decides the pressure differential condition between the electric core in the battery package.
The existing battery cores are arranged in an S shape, the voltage difference between the battery cores is the total voltage of the whole battery pack, the creepage distance required by adjacent electric connecting pieces is large, and the structure for preventing creepage in the battery pack is complex.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the battery cell arrangement structure of the battery pack and the arrangement method thereof are provided, the arrangement mode of the battery cells is optimized, and the pressure difference between the adjacent battery cells is reduced, so that the creepage distance required by the adjacent electric connecting pieces is reduced.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a battery cell arrangement structure of a battery pack comprises a plurality of battery cells, a plurality of groups of battery cell modules and a battery pack module;
each group of the battery cell module is formed by connecting two battery cells in parallel;
the battery pack module is formed by a plurality of groups of battery cell modules in a mode that the battery cell modules are arranged in three rows from top to bottom and each row is embedded in sequence;
the battery pack module is characterized in that the upper side or the lower side of the battery pack module is provided with an electric connecting piece, the electric connecting piece is used for sequentially connecting the poles of every two adjacent groups of battery cell modules in series in a S-type wiring mode through one corner of any one row of the upper row or the lower row of the battery pack module, and the poles of the two groups of battery cell modules connected in series are opposite in polarity.
In order to solve the technical problem, the invention adopts another technical scheme as follows:
a battery cell arrangement method of a battery pack comprises the following steps:
s1, connecting every two battery cells in parallel to form a battery cell module group, and obtaining a plurality of battery cell modules;
s2, sequentially embedding a plurality of groups of battery cell modules in a distribution mode of three rows from top to bottom to form a battery pack module;
and S3, arranging an electric connecting piece on the upper side or the lower side of the battery pack module, and sequentially connecting the electric connecting piece on the poles of every two adjacent groups of battery cell modules in series in a S-shaped wiring manner from one corner of any one row in the upper row or the lower row of the battery pack module, wherein the polarities of the poles of the two groups of battery cell modules connected in series are opposite.
The invention has the beneficial effects that: the invention provides a battery cell arrangement structure of a battery pack and an arrangement method thereof, wherein a traditional structure for connecting battery cell modules in the battery pack in series in an S-shaped wiring mode is replaced by a structure in which one corner of the upper side or the lower side of the battery pack module sequentially connects the polar columns of every two adjacent groups of battery cell modules in series through an electric connecting piece in an S-shaped wiring mode, so that the arrangement mode of the battery cells is greatly optimized, the creepage distance of the electric connecting piece is reduced, and the pressure difference between the adjacent battery cells in the battery pack is effectively reduced.
Drawings
Fig. 1 is a schematic top view of an arrangement of battery cells of a conventional battery pack;
fig. 2 is a schematic top view of a battery pack module in a cell arrangement structure of a battery pack;
fig. 3 is a schematic bottom view of a battery pack module in a cell arrangement structure of a battery pack;
fig. 4 is a schematic diagram of an overall structure of a battery pack module according to a method for arranging battery cells of a battery pack;
fig. 5 is a flowchart of a cell arrangement method of a battery pack.
1. A battery cell module; 2. a battery pack module; 3. a pole column; 4. an input end; 5. and (4) an output end.
Detailed Description
In order to explain the technical contents, the objects and the effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
Referring to fig. 2 to 4, an electrical core arrangement structure of a battery pack includes a plurality of electrical cores, a plurality of sets of electrical core modules, and a battery pack module;
each group of the battery cell module is formed by connecting two battery cells in parallel;
the battery pack module is formed by a plurality of groups of battery cell modules in a mode that the battery cell modules are arranged in three rows from top to bottom and each row is embedded in sequence;
the battery pack module is characterized in that an electric connecting piece is arranged on the upper side or the lower side of the battery pack module, the electric connecting piece is used for sequentially connecting the poles of every two adjacent battery cell modules in series in an S-shaped wiring mode through one corner of any one row of the upper row or the lower row of the battery pack module, and the poles of the two series-connected battery cell modules are opposite in polarity.
As can be seen from the above description, the beneficial effects of the present invention are: through with the tradition with S type walk the line mode to carry out the structure of establishing ties to the electric core module in the battery package, the replacement carries out the structure of establishing ties with the utmost point post of every adjacent two sets of electric core modules in proper order through electric connector with the line mode of walking of S type by battery package module upside or downside, has greatly optimized the mode of arranging of electric core to reduce electric connector' S creepage distance, effectively reduced the pressure differential between adjacent electric core in the battery package.
Further, two parallelly connected electric cores in every group electricity core module are placed for homopolar orientation.
Known from the above-mentioned description, the mode that every group electricity core module was placed with homopolar by two electric cores is parallelly connected together promptly, improves the electric capacity of single electricity core module on the basis of reducing parallelly connected line.
Furthermore, the battery cell modules positioned on the upper row are N groups, all the battery cells in the battery cell modules are transversely and sequentially arranged, and N is a positive integer greater than 1;
the battery cell modules in the middle row are 2N-1 groups obliquely placed at 60 degrees, and one battery cell in each group of battery cell modules is embedded between two adjacent battery cells in the upper row;
the battery cell modules arranged at the lower row are N-1 groups, all the battery cells in the battery cell modules are transversely and sequentially arranged, and each battery cell arranged at the lower row is spliced between two adjacent battery cells arranged at the middle row.
According to the above description, the battery pack module is formed by sequentially and tightly embedding the battery cell modules in the upper, middle and lower rows, so that the strength of the whole battery pack is ensured, and meanwhile, the space of the battery pack is maximally utilized to improve the electric quantity of the whole battery pack module. In addition, the battery cell modules in the middle row are all arranged in an inclined mode of 60 degrees, the shortest wiring distance can be provided for the S-type wiring mode of the electric connecting pieces, and therefore the creepage distance required by the adjacent electric connecting pieces is further reduced.
Further, a group of first battery cell modules are further arranged on the first side, which is inclined to the same direction, of the four battery cells on the battery pack module;
first electric core module is same slant with the electric core module that is arranged in being located, be close to among the first electric core module lower electric core with be located electric core module lower electric core adjacent, and be close to among the electric core of arranging and be located electric core module of arranging adjacent.
Known by the above-mentioned description, because it is a set of for the electric core module of row of going up small in quantity to arrange down, and well arrange that the slant is placed electric core module quantity and reduce a set ofly again for the twice of going up electric core module quantity, consequently the whole battery package module structure that forms after the gomphosis of three rows of electric core modules in proper order in last, this moment increases a set of first electric core module and makes it be close to the electric core module of row and well row of going down in this one side of same slant, make final whole battery package module present bilateral symmetry and crisscross inseparable structure from top to bottom, also make full use of battery package space when guaranteeing battery package module stable in structure has further improved the electric quantity of whole battery package module.
Furthermore, the input end and the output end of the battery pack module are respectively positioned at the upper side and the lower side of the battery pack module.
As can be seen from the above description, the input and output of the whole battery pack are respectively on the upper and lower sides of the battery pack module, so as to reduce the interference of the voltage difference between the input and output terminals.
Referring to fig. 5, a method for arranging battery cells of a battery pack includes the steps of:
s1, connecting every two battery cells in parallel to form a battery cell module group, and obtaining a plurality of battery cell modules;
s2, sequentially embedding a plurality of groups of battery cell modules in a distribution mode of three rows from top to bottom to form a battery pack module;
and S3, arranging an electric connecting piece on the upper side or the lower side of the battery pack module, and sequentially connecting the electric connecting piece on the poles of every two adjacent groups of battery cell modules in series in a S-shaped wiring manner from one corner of any one row in the upper row or the lower row of the battery pack module, wherein the polarities of the poles of the two groups of battery cell modules connected in series are opposite.
As can be seen from the above description, the beneficial effects of the present invention are: based on the same technical concept, cooperate foretell electric core structure of arranging of battery package, provide a battery package' S electric core method of arranging, through with the tradition with S type walk the line mode to carry out the structure of establishing ties to the electric core module in the battery package, the replacement carries out the structure of establishing ties with the utmost point post of every adjacent two sets of electric core modules in proper order through electric connector with the line mode of S type by the one corner of battery package module upside or downside, the mode of arranging of electric core has greatly been optimized, thereby the creepage distance of electric connector has been reduced, the pressure differential between the adjacent electric core in the battery package has effectively been reduced.
Further, the step S1 is specifically:
parallelly connected the mode of placing with homopolar orientation with per two electric cores and be a set of electric core module, obtain multiunit electric core module.
Known from the above-mentioned description, the mode that every group electricity core module was placed with homopolar by two electric cores is parallelly connected together promptly, improves the electric capacity of single electricity core module on the basis of reducing parallelly connected line.
Further, the step S2 is specifically:
the battery cell module comprises N groups of battery cell modules, wherein the N groups of battery cell modules are sequentially arranged in a mode that all battery cells in the battery cell modules are transverse to each other to form an upper row, 2N-1 groups of battery cell modules are arranged in a mode that each group of battery cell modules is obliquely arranged by 60 degrees to form a middle row, the N-1 groups of battery cell modules are sequentially arranged in a mode that all battery cells in the battery cell modules are transverse to each other to form a lower row, one of the battery cells in each group of battery cell modules in the middle row is embedded between two adjacent battery cells in the upper row, each battery cell in the battery cell modules in the lower row is respectively embedded between two adjacent battery cells in the middle row, and N is a positive integer greater than 1.
According to the above description, the battery pack module is formed by sequentially and tightly embedding the battery cell modules in the upper, middle and lower rows, so that the strength of the whole battery pack is ensured, and meanwhile, the space of the battery pack is maximally utilized to improve the electric quantity of the whole battery pack module. In addition, the battery cell modules in the middle row are all arranged in an inclined mode of 60 degrees, the shortest wiring distance can be provided for the S-type wiring mode of the electric connecting pieces, and therefore the creepage distance required by the adjacent electric connecting pieces is further reduced.
Further, the step S2 further includes:
four electric cores set up a set of first electric core module again for same oblique first side on the battery package module, just first electric core module is same slant with the electric core module that is arranged in being located, be close to among the first electric core module and arrange electric core module adjacent with being located down, and be close to among the electric core module arrange electric core and be located among the electric core module adjacent.
Known by the above-mentioned description, because arrange down and be a set of less for the electric core module quantity of going up the row, and well arrange that the slant is placed electric core module quantity reduces a set ofly again for the twice of going up electric core module quantity, consequently the whole battery package module structure that forms after the last three rows of electric core modules of going up in proper order gomphosis can be the same slant of four electric cores in one side, this moment increase a set of first electric core module and make it be close to arrange down and well arrange electric core module down in this one side of same slant, make final whole battery package module present bilateral symmetry and crisscross compact structure from top to bottom, also make full use of battery package space has further improved the electric quantity of whole battery package module when guaranteeing battery package module stable in structure.
Furthermore, the input end and the output end of the battery pack module are respectively positioned at the upper side and the lower side of the battery pack module.
As can be seen from the above description, the input and output of the whole battery pack are respectively on the upper and lower sides of the battery pack module, so as to reduce the interference of the voltage difference between the input and output terminals.
The battery cell arrangement structure and the battery cell arrangement method of the battery pack provided by the invention are suitable for optimizing the arrangement mode of the battery cells in the battery pack of the two-wheeled electric vehicle, so that the overall performance of the battery pack is optimized, and the description is given by combining with a specific embodiment.
Referring to fig. 1 to 4, a first embodiment of the present invention is:
the utility model provides a battery core structure of arranging of battery package, as shown in fig. 2 to 4, includes a plurality of electric cores, multiunit electric core module 1 and battery package module 2.
Wherein, every group electricity core module 1 is parallelly connected by two electric cores and forms, and in this embodiment, every two parallelly connected electric cores in every group electricity core module 1 are placed for homopolar orientation, and every group electricity core module 1 is parallelly connected together with the mode of homopolar placing by two electric cores promptly, can improve single electric core module 1's electric capacity on the basis of reducing parallelly connected line of walking.
The battery pack module 2 is formed by a plurality of groups of battery cell modules 1 in three rows, namely, a top view or a bottom view of the battery pack module 2 shown in fig. 2 or fig. 3, wherein each row is embedded in sequence; and the upside or downside of battery package module 2 is provided with electric connector, and electric connector specifically establishes ties every two sets of adjacent electric core module 1's utmost point post 3 in proper order with the line mode of type of walking by the arbitrary one corner of row in the last row of row or the lower row of battery package module 2, and the polarity of the utmost point post 3 of two sets of electric core module 1 that are established ties is opposite.
In this embodiment, taking the top view of the battery pack module 2 as an example, that is, as shown in fig. 2, the electrical connecting element only needs to serially connect the cell modules 1 at the upper portion (i.e. the upper side) of the battery pack module 2, the input end 4 of the battery pack module 2 selects a group of cell modules 1 located at the lower left corner, that is, the leftmost group of cell modules 1 in the lower row, so that, starting from the lower left corner, the electrical connecting element serially connects each group of cell modules 1 in sequence in a — "type routing manner, and finally outputs from the output end 5 located at the bottom (i.e. the lower side) of the battery pack module 2, in this embodiment, the negative electrode is used as the input end 4, that is, the positive electrode is used as the output end 5, that is, the output end + in fig. 2, and the input end 4 and the output end 5 of the battery pack module 2 are respectively located at the upper and lower sides of the battery pack module 2 and are also located at the left and right sides of the whole battery pack module 2, the differential pressure interference between the input and output terminals 5 is reduced even further.
In other equivalent embodiments, the electrical connector may also connect the cell modules 1 in series at the lower side of the battery pack module 2, that is, only one of the upper and lower sides of the battery pack module 2 needs to connect the cell modules 1 in series; meanwhile, the input end 4 and the output end 5 can also be selected from the upper row or the lower row and which end (i.e. left side or right side) starts to be finished according to actual needs, and only the input end 4 and the output end 5 are respectively located at the upper side and the lower side of the battery pack module 2 and are also respectively located at the left side and the right side of the battery pack module 2; and the polarities of the input end 4 and the output end 5 can be freely limited, so that the input and output polarities of the battery pack module 2 are opposite, the input end is not limited to be only a negative electrode, and the output end is only a positive electrode.
Fig. 1 is a schematic diagram of a top view of the arrangement of the battery cells of the conventional battery pack, and it can be seen from fig. 1 that every two battery cells are also connected in parallel to form a set of battery cell modules 1, but the whole battery pack module 2 is formed by four rows of battery cell modules 1, and the battery cells in each row of battery cell modules 1 are all connected in sequence in a horizontal direction, so that the serial wiring (i.e. the arrangement of the electrical connectors) of each set of battery cell modules 1 is in a wiring manner similar to an S-shape, and the cell arrangement manner makes the creepage distance required by the adjacent electrical connectors larger.
Simultaneously with the electric core mode of arranging of this embodiment contrast current S type line mode of walking, compare fig. 2 and fig. 1 promptly and also can find that input 4 and output 5 in this embodiment are located the upper and lower both sides of battery package module 2 respectively and still are located whole battery package module 2 respectively about, compare in fig. 1 input 4 and output 5 and all be located the left mode, also further reduced the pressure differential interference between the input and the output of battery package module 2.
In this embodiment, through the tradition with the S type walk the line mode to carry out the structure of establishing ties to electric core module 1 in the battery package, replace for by the battery package module 2 certain side from certain one corner with the line mode of the type through electric connector carry out the structure of establishing ties with every adjacent two sets of utmost point post 3 of electric core module 1 in proper order, reduced electric connector' S creepage distance, effectively reduced the pressure differential between the adjacent electric core in the battery package.
Referring to fig. 2 to 4, a second embodiment of the present invention is:
on the basis of the first embodiment, in this embodiment, as shown in fig. 2 or fig. 3, six groups of cell modules 1 are arranged in an upper row, and all cells in the six groups are arranged in sequence in a transverse direction; the battery cell modules 1 arranged in the middle row are eleven groups obliquely arranged at 60 degrees, the number of the groups is two times that of the battery cell modules 1 arranged in the upper row and is reduced, and one battery cell in each group of the battery cell modules 1 is embedded between two adjacent battery cells arranged in the upper row; be located the electric core module 1 of arranging down and be five groups, be than the electric core module 1 that is located the row of arranging less a set of quantity, and be located each electric core of arranging down and all coincide between two adjacent electric cores that are located the row.
In this embodiment, the battery package module 2 is formed to the inseparable gomphosis in proper order of the mode of three rows about the electricity core module 1 in the top, guarantee that whole battery package intensity the maximize simultaneously also utilize the electric quantity of battery package space in order to improve whole battery package module. In addition, the battery cell modules in the middle row are all arranged in an inclined mode of 60 degrees, the shortest wiring distance can be provided for the S-type wiring mode of the electric connecting pieces, and therefore the creepage distance required by the adjacent electric connecting pieces is further reduced.
Simultaneously, in this embodiment, four electric cores still are provided with a set of first electric core module for the first side of same slant on battery package module 2, and wherein first electric core module is same slant with the electric core module 1 that is arranged in being located, and it is adjacent with the electric core module 1 that is arranged in being close to lower row electric core in the first electric core module, and the electric core that is close to well row is adjacent with the electric core module 1 that is arranged in being located. In the present embodiment, taking the top view of fig. 2 as an example, since the lower row is one group smaller than the upper row of the cell modules 1, and the number of the cell modules 1 placed obliquely in the middle row is twice as large as that of the cell modules 1 placed in the upper row and is reduced by one group, therefore, the structure of the whole battery pack module 2 formed by sequentially embedding the upper, middle and lower rows of the battery cell modules 1 is a structure in which four battery cells are in the same oblique direction on the right side, at the moment, a plurality of first battery cell modules are additionally arranged on the same oblique direction side and are close to the lower and middle rows of the battery cell modules 1, so that the whole battery pack module 2 is in a compact structure which is symmetrical left and right and staggered up and down, the stable structure of the battery pack module 2 is ensured, and the space of the battery pack is fully utilized, so that the electric quantity of the whole battery pack module 2 is further improved, and in the embodiment, this a set of first electric core module that sets up more has still regarded as whole battery package module 2's output 5.
In addition, in the embodiment, as shown in fig. 2, in the upper side surface of the battery pack module 2, the polarities of the poles of the six groups of cell modules 1 in the upper row are opposite to each other, the polarities of the poles of the five groups of cell modules 1 in the lower row are opposite to each other, and in the eleven groups of cell modules 1 in the middle row, except for the outermost group close to the input pole, the polarities of every two of the other ten groups of cell modules 1 are the same to form "- ++++ - ++ - +" polarity arrangement as shown in fig. 2. And the polarity of first electric core module is the same with the polarity as the input utmost point-electric core module, so be the + in the polarity of the one side first electric core module of the downside of battery package module 2, regard as output level +, promptly for input 4 and output 5 are located battery package module 2's upper and lower both sides respectively and still are located whole battery package module 2's left and right sides respectively, have reduced the pressure differential interference between input 4 and the output 5.
Meanwhile, in other equivalent embodiments, the cell modules 1 on the upper row are N groups, the cell modules 1 on the middle row are 2N-1 groups, and the cell modules 1 on the lower row are 1N-1 groups, where N is a positive integer greater than 1, for example, N is 2, 2N-1 is 3, N-1 is 1, and so on, which may be specifically determined according to the actual battery pack capacity and the specification of the cell required by the two-wheeled electric vehicle.
The electric core structure of arranging of a battery package that this embodiment adopted, pressure differential U between adjacent electric core module 1 is 3.2V, and then the required creepage distance of adjacent electric connector in the battery package module 2 is according to the formula of international regulation: creepage distance d is more than or equal to 0.25 between the electricity core differential pressure U +5, then the required creepage distance of adjacent electric connector that finally calculates is 5.8mm, and adopt traditional S type connected mode in fig. 1, the pressure differential between electric core module 1 is 73.6V, finally calculate the required creepage distance of adjacent electric connector according to creepage distance formula and be 23.4mm, consequently, the electric core structure of arranging of a battery package of this embodiment, can greatly reduce the pressure differential between adjacent electric core, thereby reduce the required creepage distance of adjacent electric connector in battery package module 2.
Referring to fig. 5, a third embodiment of the present invention is:
a cell arrangement method of a battery pack, as shown in fig. 5, includes the steps of:
s1, connecting every two battery cells in parallel to form a battery cell module group, and obtaining a plurality of battery cell modules;
s2, sequentially embedding a plurality of groups of battery cell modules in a distribution mode of three rows from top to bottom to form a battery pack module;
s3, arranging an electric connecting piece on the upper side or the lower side of the battery pack module, sequentially connecting the electric connecting piece on the poles of every two adjacent battery cell modules in series in an S-shaped wiring mode from one corner of any one row of the upper row or the lower row of the battery pack module, wherein the polarities of the poles of the two series-connected battery cell modules are opposite.
That is, in this embodiment, based on the same technical concept, the configuration of the electrical cores of the battery pack according to the first embodiment or the second embodiment is matched, so as to provide an electrical core configuration method of the battery pack, and a structure that the electrical core modules in the battery pack are connected in series in an S-shaped wiring manner is replaced by a structure that one corner of the upper side or the lower side of the battery pack module sequentially connects the poles of every two adjacent sets of electrical core modules in series through an electrical connecting piece in an S-shaped wiring manner, so that the configuration manner of the electrical cores is greatly optimized, the creepage distance of the electrical connecting piece is reduced, and the pressure difference between adjacent electrical cores in the battery pack is effectively reduced.
Wherein, step S1 specifically includes:
every two electric cores are connected in parallel into a group of electric core module in a mode of placing in the homopolar direction to obtain a plurality of groups of electric core modules, namely, each group of electric core module is connected in parallel by a mode of placing in two homopolar directions, and the electric capacity of a single electric core module is improved on the basis of reducing parallel wiring.
Wherein, step S2 specifically includes:
the battery cell module comprises N groups of battery cells, wherein the N groups of battery cells are sequentially arranged in a mode that all the battery cells in the battery cell module are transverse to each other to form an upper row, 2N-1 groups of battery cells are arranged in a mode that each group of battery cells is obliquely arranged by 60 degrees, the N-1 groups of battery cells are sequentially arranged in a mode that all the battery cells in the battery cell module are transverse to each other to form a lower row, one of the battery cells in each group of battery cell modules in the battery cell module arranged in the middle row is embedded between two adjacent battery cells in the upper row, each battery cell in the battery cell module arranged in the lower row is all spliced between two adjacent battery cells in the middle row, and N is a positive integer greater than 1.
The battery pack module is formed by sequentially and tightly embedding the battery cell modules in the upper row, the middle row and the lower row, so that the strength of the whole battery pack is guaranteed, the battery pack space is maximally utilized to improve the electric quantity of the whole battery pack module, the battery cell modules in the middle row are arranged in an inclined mode of 60 degrees, the shortest wiring distance can be provided for the S-shaped wiring mode of the electric connecting pieces, and the creepage distance required by the adjacent electric connecting pieces is further reduced.
Wherein, step S2 further includes:
four electric cores set up a set of first electric core module again for same oblique first side on the battery package module, and first electric core module is same slant with the electric core module that is arranged in being located, and the electric core module that is close to down in the first electric core module is adjacent with the electric core module that is located down, and the electric core that is close to well row is adjacent with the electric core module that is located well row.
Because it is a set of less for the electric core module of last row to arrange down, and the electric core module quantity that the slant was placed of well row reduces a set ofly again for the twice of last row of electric core module quantity, consequently the whole battery package module structure that forms after the gomphosis of three rows of electric core modules in proper order of final last well is four same slants of electric core in one side, this one side of same slant increases a set of first electric core module and makes it be close to electric core down and be located that electric core module down is adjacent and be close to the electric core of well row and be located that the electric core module of well row is adjacent at this moment, make final whole battery package module present bilateral symmetry's compact structure, also make full use of battery package space when guaranteeing battery package module stable in structure has further improved the electric quantity of whole battery package module.
In addition, the input end and the output end of the battery pack module are respectively positioned at the upper side and the lower side of the battery pack module, and the input and the output of the whole battery pack are respectively positioned at the upper side and the lower side of the battery pack module so as to reduce the pressure difference interference between the input end and the output end.
In summary, according to the cell arrangement structure of the battery pack and the cell arrangement method thereof provided by the invention, a traditional structure for connecting the cell modules in the battery pack in series in an S-shaped wiring manner is replaced by a structure in which the poles of every two adjacent cell modules are connected in series in a-shaped wiring manner from a certain corner by a certain side of the battery pack module through the electric connecting pieces in sequence, so that the creepage distance of the electric connecting pieces is reduced, and the pressure difference between the adjacent cells in the battery pack is effectively reduced.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.
Claims (8)
1. The battery cell arrangement structure of the battery pack is characterized by comprising a plurality of battery cells, a plurality of groups of battery cell modules and a battery pack module;
each group of the battery cell module is formed by connecting two battery cells in parallel;
the battery pack module is formed by a plurality of groups of battery cell modules in a mode that the battery cell modules are arranged in three rows from top to bottom and each row is embedded in sequence;
the battery cell modules positioned on the upper row are N groups, all battery cells in the battery cell modules are transversely and sequentially placed, and N is a positive integer greater than 1;
the battery cell modules in the middle row are 2N-1 groups obliquely arranged at 60 degrees, and one battery cell in each group of battery cell modules is embedded between two adjacent battery cells in the upper row;
the battery cell modules positioned in the lower row are N-1 groups, all the battery cells in the battery cell modules are transversely and sequentially placed, and each battery cell positioned in the lower row is spliced between two adjacent battery cells positioned in the middle row;
the battery pack module is characterized in that the upper side or the lower side of the battery pack module is provided with an electric connecting piece, the electric connecting piece is used for sequentially connecting the poles of every two adjacent groups of battery cell modules in series in a S-type wiring mode through one corner of any one row of the upper row or the lower row of the battery pack module, and the poles of the two groups of battery cell modules connected in series are opposite in polarity.
2. The cell arrangement structure of the battery pack according to claim 1, wherein two parallel cells in each group of cell modules are placed in a homopolar orientation.
3. The cell arrangement structure of the battery pack according to claim 1, wherein a group of first cell modules is further disposed on a first side of the battery pack module, where four cells are inclined in the same direction;
first electric core module is same slant with the electric core module that is arranged in being located, be close to among the first electric core module lower electric core with be located electric core module lower electric core adjacent, and be close to among the electric core of arranging and be located electric core module of arranging adjacent.
4. The battery cell arrangement structure of the battery pack according to claim 1, wherein the input end and the output end of the battery pack module are respectively located at the upper side and the lower side of the battery pack module.
5. A battery cell arrangement method of a battery pack is characterized by comprising the following steps:
s1, connecting every two battery cells in parallel to form a battery cell module group, and obtaining a plurality of battery cell modules;
s2, sequentially embedding a plurality of groups of battery cell modules in a distribution mode of three rows from top to bottom to form a battery pack module;
the step S2 specifically includes:
the battery cell module comprises N groups of battery cell modules, a middle row and N-1 groups of battery cell modules, wherein the N groups of battery cell modules are sequentially arranged in a mode that all battery cells in the battery cell modules are transverse to form the upper row, the 2N-1 groups of battery cell modules are arranged in a mode that each group of battery cell modules is obliquely arranged at 60 degrees to form the middle row, the N-1 groups of battery cell modules are sequentially arranged in a mode that all battery cells in the N-1 groups of battery cell modules are transverse to form the lower row, one battery cell in each group of battery cell modules in the middle row is embedded between two adjacent battery cells in the upper row, each battery cell in the battery cell modules in the lower row is spliced between two adjacent battery cells in the middle row, and N is a positive integer greater than 1;
and S3, arranging an electric connecting piece on the upper side or the lower side of the battery pack module, and sequentially connecting the electric connecting piece on the poles of every two adjacent groups of battery cell modules in series in a S-shaped wiring manner from one corner of any one row in the upper row or the lower row of the battery pack module, wherein the polarities of the poles of the two groups of battery cell modules connected in series are opposite.
6. The electrical core arrangement method of the battery pack according to claim 5, wherein the step S1 is specifically:
connect in parallel into a set of electric core module with the mode that homopolar orientation was placed every two electric cores, obtain multiunit electric core module.
7. The cell arrangement method of the battery pack according to claim 5, wherein the step S2 further includes:
four electric cores set up a set of first electric core module again for same obliquely first side on the battery package module, just first electric core module is same slant with the electric core module that is arranged in being located, be close to among the first electric core module and arrange electric core module down adjacent with being located, and be close to among the electric core module arrange electric core and be located among the electricity core module and arrange the electric core module adjacent.
8. The battery cell arrangement method of the battery pack according to claim 5, wherein the input end and the output end of the battery pack module are respectively located at the upper side and the lower side of the battery pack module.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210079630.7A CN114597597B (en) | 2022-01-24 | 2022-01-24 | Battery cell arrangement structure of battery pack and arrangement method thereof |
| PCT/CN2022/075362 WO2023137799A1 (en) | 2022-01-24 | 2022-02-07 | Battery cell arrangement structure of battery pack, and arrangement method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202210079630.7A CN114597597B (en) | 2022-01-24 | 2022-01-24 | Battery cell arrangement structure of battery pack and arrangement method thereof |
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| CN114597597A CN114597597A (en) | 2022-06-07 |
| CN114597597B true CN114597597B (en) | 2022-09-13 |
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| CN (1) | CN114597597B (en) |
| WO (1) | WO2023137799A1 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207719279U (en) * | 2017-12-25 | 2018-08-10 | 大连中比动力电池有限公司 | A kind of column lithium ion battery assembly holder |
| CN208835163U (en) * | 2018-09-27 | 2019-05-07 | 浙江鼎能电气有限公司 | A kind of double piezoelectric battery packets |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4761727B2 (en) * | 2004-04-30 | 2011-08-31 | 三洋電機株式会社 | Pack battery |
| EP2600436A4 (en) * | 2010-07-29 | 2015-04-29 | Panasonic Ip Man Co Ltd | Battery module |
| KR101219233B1 (en) * | 2010-11-19 | 2013-01-09 | 삼성에스디아이 주식회사 | Battery array and battery pack having the same |
| US8691423B2 (en) * | 2011-03-14 | 2014-04-08 | Joseph Krzywicki | Rebuilt rechargeable battery with welded grip |
| JP6187782B2 (en) * | 2013-01-11 | 2017-08-30 | パナソニックＩｐマネジメント株式会社 | Battery pack |
| CN103682229A (en) * | 2013-12-21 | 2014-03-26 | 苏州市博得立电源科技有限公司 | Method for realizing tight serial and parallel connection on cylindrical battery cells in battery pack |
| TWI637547B (en) * | 2016-11-08 | 2018-10-01 | 磐石電池股份有限公司 | Battery parallel device with equal resistance charge and discharge path |
| US10938003B2 (en) * | 2017-09-12 | 2021-03-02 | Chongqing Jinkang New Energy Vehicle Co., Ltd. | Battery packs to power electric vehicles |
| JP2019083087A (en) * | 2017-10-27 | 2019-05-30 | 三洋電機株式会社 | Battery pack |
| JP7410029B2 (en) * | 2018-07-31 | 2024-01-09 | 本田技研工業株式会社 | battery pack |
| CN210668460U (en) * | 2019-08-28 | 2020-06-02 | 深圳市柒号网络科技有限公司 | Lithium battery module |
| KR20210108127A (en) * | 2020-02-25 | 2021-09-02 | 삼성에스디아이 주식회사 | Rechargeable battery pack |
| CN212323157U (en) * | 2020-04-30 | 2021-01-08 | 欣旺达电动汽车电池有限公司 | Battery module and battery pack |
| CN214254661U (en) * | 2021-01-18 | 2021-09-21 | 蜂巢能源科技有限公司 | Bus structure and battery module |
| CN214848948U (en) * | 2021-10-27 | 2021-11-23 | 嘉兴模度新能源有限公司 | Battery pack with low-power top bus bar and battery pack |
-
2022
- 2022-01-24 CN CN202210079630.7A patent/CN114597597B/en active Active
- 2022-02-07 WO PCT/CN2022/075362 patent/WO2023137799A1/en unknown
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207719279U (en) * | 2017-12-25 | 2018-08-10 | 大连中比动力电池有限公司 | A kind of column lithium ion battery assembly holder |
| CN208835163U (en) * | 2018-09-27 | 2019-05-07 | 浙江鼎能电气有限公司 | A kind of double piezoelectric battery packets |
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| CN114597597A (en) | 2022-06-07 |
| WO2023137799A1 (en) | 2023-07-27 |
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