CN111799405A - Battery module - Google Patents
Battery module Download PDFInfo
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- CN111799405A CN111799405A CN201910280453.7A CN201910280453A CN111799405A CN 111799405 A CN111799405 A CN 111799405A CN 201910280453 A CN201910280453 A CN 201910280453A CN 111799405 A CN111799405 A CN 111799405A
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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
Abstract
The invention provides a battery module which comprises a plurality of battery cores. The battery cells are arranged in a plurality of rows and a plurality of rows, and are divided into a first block, a second block, and a third block. The rows include a first row and a second row. The second block is located between the first block and the third block, and in the second row, the battery cores in the second block are located on a horizontal line, and at least one row of battery cores in the first block and the third block protrudes out of the horizontal line. The invention can solve the problems of flat punching space utilization rate, screw locking configuration and heat accumulation, and can simplify the process and reduce the cost compared with other types of arrangement modes.
Description
Technical Field
The present invention relates to a battery module, and more particularly, to a battery module with a compact size and a heat dissipation effect.
Background
Fig. 1 shows an exploded view of a battery module according to the prior art. As shown in fig. 1, the battery module 120 includes a plurality of cylindrical battery cells 121, at least one cell holder 123, and a plurality of conductive sheets 124. The battery cells 121 are arranged in a staggered manner. The rack 123 defines a plurality of battery receiving spaces for placing and fixing the battery cells 121, and the battery cells 121 are stacked in a staggered manner in the longitudinal direction x and the width direction z of the rack 123, respectively. The conductive sheets 124 are respectively disposed at two ends of the battery cells 121, so that the battery cells 121 are connected in parallel or in series to form a plurality of battery cell arrays. The conductive sheet 124 is welded to each battery cell 121 by welding, so as to achieve the functions of series connection and parallel connection. The bracket 123 may have positioning pins 161 that pass through the positioning holes 116 of the spot welding conductive sheets 124 to position the conductive sheets 310.
The battery module 120 further includes a circuit board 126. The circuit board 126 may be a BMS control board. A chip 127 having various functions is formed on the circuit board 126. The at least one support 123 further defines an accommodating space for accommodating the circuit board 126. The conductive plates 124 of the final positive or negative electrode at both ends of the battery module 120 are locked to the circuit board 126 by screws 125, and the circuit board 126 is also locked to the bracket 123 by the screws 125. A plurality of electrical connectors are provided on the circuit board 126.
As the demand of high power of the system is increasing, the number of battery cells carried by the battery module is also increasing, so that a better heat dissipation effect is required, and the design requirement on space utilization is becoming more stringent. Therefore, how to improve the space utilization and configure the screws for locking, and consider the problem of heat accumulation, and can simplify the process and reduce the cost is a problem worth discussing at present.
Disclosure of Invention
An object of an embodiment of the present invention is to provide a battery module having two different types of arrangement of battery cells.
According to an embodiment of the present invention, a battery module includes a plurality of battery cells. The battery cells are arranged in a plurality of rows and a plurality of rows, and are divided into a first block, a second block, and a third block. The rows include a first row and a second row. The second block is located between the first block and the third block, and in the second row, the battery cores in the second block are located on a horizontal line, and at least one row of battery cores in the first block and the third block protrudes out of the horizontal line.
In one embodiment, the rows include a first row and a second row respectively located in the first block, and the first row is located at an outermost side of a first side of the battery cells. In the first block, a concave space is defined by the outer peripheral surfaces of the battery cells of the first row and the battery cells of the second row in the second row, and in the first block, at least a part of the battery cells of the second row in the first row is embedded in the concave space.
In one embodiment, the rows include a third row and a fourth row respectively located in the third block. In the third block, a concave space is defined by the outer peripheral surfaces of the battery cells of the first row and the battery cells of the second row in the third row, and in the third block, at least a part of the battery cells of the second row in the fourth row is embedded in the concave space.
In one embodiment, the at least one row of battery cells in the first block protrudes toward one side of the horizontal line, and the at least one row of battery cells in the third block protrudes toward the side of the horizontal line.
According to an embodiment of the present invention, a battery module includes a plurality of battery cells. The battery cells are arranged in a plurality of rows and a plurality of rows, and are divided into a first block, a second block, and a third block. The conductive sheet is electrically connected to the battery cells and connects the battery cells in series or in parallel. The rows include a first row and a second row. The second block is located between the first block and the third block. In the second row, the battery cores in the second block are positioned on a horizontal line, at least one row of battery cores in the first block and the third block protrudes out of the horizontal line, and each conducting strip comprises a first section, a second section and a third section, and the second section is connected between the first section and the third section. And the extending direction of the first section and the third section of each conducting strip protrudes out of the second section.
In one embodiment, the at least one row of battery cells in the first block protrudes toward a first side of the horizontal line, the at least one row of battery cells in the third block protrudes toward the first side of the horizontal line, and the extending directions of the first section and the third section also protrude toward the first side of the horizontal line.
In one embodiment, the battery module further includes a circuit board. The circuit board is disposed to face the first side of the horizontal line, the conductive plate includes a substrate conductive plate closer to the circuit board than other conductive plates, and the substrate conductive plate further includes a fourth section extending toward the substrate conductive plate and connected to the circuit board.
In one embodiment, the battery module further includes a housing for accommodating the battery core, the conductive sheet and the circuit board.
In one embodiment, in the first block, the rows include a first row and a second row. In the first block, the outer peripheral surfaces of the battery cells of the first row and the battery cells of the second row in the second row define a concave space. In the first block, at least a part of the battery cells in the second row in the first row are embedded in the concave space.
In summary, according to an embodiment of the present invention, the battery cores are arranged in two different types, and in an embodiment, the battery cores are arranged in rows and columns and in a staggered manner, so that the utilization rate of stamping space, the arrangement of screw locking and the problem of heat accumulation can be reduced, compared with other types of arrangement, and the process can be simplified and the cost can be reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor.
Fig. 1 shows an exploded view of a battery module according to the prior art.
Fig. 2 is a schematic diagram of a battery module according to an embodiment of the invention.
Fig. 3 is a schematic view illustrating a battery module according to another embodiment of the present invention.
Description of the symbols:
116: locating hole
120: battery module
121: battery core
123: support frame
124: conductive sheet
125: quilt screw
126: circuit board
127: chip and method for manufacturing the same
161: positioning foot
200: battery module
211: first block
212: second block
213: third block
221: battery core
222: depressed space
310: conductive sheet
310 a: substrate conductive sheet
311: first stage of (1)
312: second section
313: and a third stage
314: fourth stage
316: locating hole
350: circuit board
360: a housing
361: positioning foot
1C: first row
2C: second row
3C: third row
4C: fourth row
1R: first row
2R: second column
H: horizontal line
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 2 is a schematic diagram of a battery module according to an embodiment of the invention. As shown in fig. 2, according to an embodiment of the present invention, the battery module 200 includes a plurality of battery cells 221. Preferably, the battery cell 221 is circular, annular or approximately circular. The battery cells 221 are arranged in a plurality of rows and a plurality of columns, and are divided into a first block 211, a second block 212, and a third block 213. The second block 212 is located between the first block 211 and the third block 213. The rows include a first row 1R (raw) and a second row 2R. In the second row 2R, the battery cells 221 in the second block 212 are located on a horizontal line H, and the battery cells 221 in at least one row of the first block 211 and the third block 213 protrude from the horizontal line H.
The rows include a first row 1C (column) and a second row 2C respectively located in the first block 211, and the first row 1C is located at the outermost side of a first side of the battery cells 221. In the embodiment of fig. 2, the cells 221 in the first row 1C protrude from the horizontal line H. In addition, in one embodiment, in the first block 211, the peripheral surfaces of the battery cells 221 in the first row 1R and the battery cells 221 in the second row 2R in the second row 2C define a concave space 222, and in the first block 211, at least a portion of the battery cells 221 in the second row 2R in the first row 1C is embedded in the concave space 222.
In one embodiment, the rows preferably include a third row 3C and a fourth row 4C respectively located in the 3 rd block 213, and the fourth row 4C is located at an outermost side of a second side of the battery cells 221 compared to the third row 3C. In the third block 213, the outer peripheral surfaces of the cells 221 in the first row 1R and the cells 221 in the second row 2R in the third row 3C define another recessed space 222, and in the third block 213, at least a portion of the cells in the second row 2R in the fourth row 4C is embedded in the another recessed space 222.
In one embodiment, the at least one row of battery cells 221 in the first block 211 protrudes toward one side of the horizontal line H, and the at least one row of battery cells 221 in the third block 213 protrudes toward the one side of the horizontal line H. In the embodiment of fig. 2, the battery cells 221 of the at least one row of the first block 211 and the third block 213 are protruded toward the upper direction of the horizontal line H.
As the demand for high power of the system increases, the number of battery cells 221 carried by the battery module 200 also increases, and thus the design requirement for space utilization is more stringent. According to an embodiment of the present invention, the battery cells 221 are arranged in two ways, more specifically, in a row-column arrangement and a staggered arrangement. By row-column arrangement, it is meant that each column of cells 221 extends on a horizontal line and each row extends on a vertical line. In the embodiment of fig. 2, the battery cells 221 in the second block 212 are stacked in a row-column arrangement, and the center of each battery cell 221 is located on a horizontal line and a vertical line, respectively. The staggered arrangement means that the outer peripheral surfaces of the battery cells 221 in two adjacent rows in one row define a concave space, and at least a part of the battery cells 221 in the other row are embedded in the concave space. In the embodiment of fig. 2, the cells 221 in the first and third blocks 211 and 213 are stacked in a staggered arrangement. In the present embodiment, the two opposite sides of the second row 2C and the 3 rd row 3C are arranged in a determinant and a staggered manner, respectively, and thus belong to a row across blocks.
Arranging determinant: the four battery cells 221 are regularly arranged in rows and columns, so that a space is formed between the four battery cells, which is beneficial for arranging screws to be locked on a bracket (End Cap) or a Bus (Bus), but the whole required space is large, and the space utilization rate is poor. In the other direction, the arrangement is staggered: the battery cells are densely arranged, space can be effectively utilized, the required space is small, the matching of the shape of a carrier or the limitation of the available space is facilitated, the internal part is not favorable for screw arrangement and locking, and the heat accumulation is easily caused due to the close distance between the battery cells 221.
In an embodiment of the present invention, the battery cells 221 are stacked in both a row-column arrangement and a staggered arrangement, and the screw locking positions are arranged in the blocks of the row-column arrangement, so that the staggered arrangement can be used to improve the space utilization, and the row-column arrangement can be used to increase the space for arranging the screw locking. In addition, when considering the heat accumulation problem, the blocks arranged in the rows are disposed at the middle portion, and the blocks arranged in the staggered manner are disposed at the outer portion, so that the blocks arranged in a dense manner are disposed at the outer side of the battery module 200 to facilitate heat dissipation. Compared with other designs for increasing the heat dissipation element, the design has the advantages of simplifying the process and reducing the cost.
Fig. 3 is a schematic view illustrating a battery module according to another embodiment of the present invention. The embodiment of fig. 3 is similar to the embodiment of fig. 2, and therefore the same reference numerals are used for the same elements and the related description thereof is omitted, and at least one difference is described below. As shown in fig. 3, the battery module 200 includes a plurality of battery cells 221 and at least one conductive sheet 310. In one embodiment, the battery module 200 may further include a circuit board 350 and a housing 360. The arrangement of the battery cells 221 is the same as that of the embodiment of fig. 2, and therefore, the description thereof is omitted. The conductive sheet 310 is electrically connected to the battery cells 221, and connects the battery cells 221 in series or in parallel.
In the embodiment, the conductive sheet 310 includes a first segment 311, a second segment 312 and a third segment 313, the second segment 312 is connected between the first segment 311 and the third segment 313, and the extending direction of the first segment 311 and the third segment 313 of the conductive sheet 310 protrudes out of the second segment 312. In one embodiment, the battery cells 221 in the first row 1C of the first block 211 protrude toward the first side of the horizontal line H, the battery cells 221 in the fourth row 4C of the third block 213 protrude toward the first side of the horizontal line H, and the extending directions of the first section 311 and the third section 313 of the conductive sheet 310 also extend and protrude toward the first side of the horizontal line H. In the embodiment of fig. 2, the first side of the horizontal line H is the top.
In the present embodiment, the battery module 200 further includes a circuit board 350. The lower surface of the circuit board 350 is disposed to face a first side (i.e., the upper side) of the horizontal line H, the conductive sheet 310 includes a substrate conductive sheet 310a, the substrate conductive sheet 310a is closer to the circuit board 350 than the other conductive sheets 310, and the substrate conductive sheet 310a further includes a fourth section 314, the fourth section 314 extends toward the substrate conductive sheet 310a and is connected to the circuit board 350. In an embodiment, the battery module 200 may further include a bracket (End cap) defining a plurality of receiving spaces for receiving the battery cells 221. Preferably, the battery module 200 further includes a housing 360 for accommodating the battery cell 221, the conductive sheet 310 and the circuit board 350, and preferably also a bracket.
To achieve the above object, in an embodiment of the present invention, the housing 360 is fixed by a slot structure of a bracket (End cap), the conductive plate 310 can be placed on the bracket during production, and the bracket can have a positioning pin 361 passing through the positioning hole 316 of the spot welding conductive plate 310 to position the conductive plate 310, and then the spot welding process is performed. In the present embodiment, the positioning pins 361 and the positioning holes 316 are located in the block of the determinant arrangement, i.e. in the second block 212. In one embodiment, the rack is divided into a row-column arrangement part (the second block 212) and a staggered arrangement part (the first block 211 and the third block 213), the row-column arrangement part can be located in the middle of the battery module 200, the space between the four battery cores 221 is used for arranging the screw locking rack, and the row-column arrangement part (the second block 212) has a larger battery core interval and is easy to dissipate heat. The staggered arrangement parts (the first block 211 and the third block 213) can be located at the outer region of the battery module 200, and the closest arrangement can be performed to save space, which is beneficial to matching with the shape of the carrier or the design of available space limitation. The conducting strips 310 are bent and reduced along with the change of the arrangement of the supports, so that the conducting function is not lost, and the space utilization rate can be improved.
As described above, according to an embodiment of the present invention, the battery cells 221 are arranged in two ways, more specifically, in a row-column arrangement and a staggered arrangement. Therefore, the space utilization rate, the screw locking configuration and the heat accumulation problem can be leveled, and compared with other types of arrangement modes, the process can be simplified and the cost can be reduced.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (9)
1. A battery module, comprising:
a plurality of battery cells arranged in a plurality of rows and divided into a first block, a second block, and a third block,
wherein the content of the first and second substances,
the rows include a first row and a second row,
the second block is located between the first block and the third block, and
in the second row, the battery cores in the second block are positioned on a horizontal line, and at least one row of battery cores in the first block and the third block protrudes out of the horizontal line.
2. The battery module according to claim 1,
the rows comprise a first row and a second row which are respectively positioned in the first block, the first row is positioned at the outermost side of a first side of the battery core,
in the first block, the peripheral surfaces of the battery cells of the first row and the battery cells of the second row in the second row define a concave space, and
in the first block, at least a portion of the battery cells of the second row in the first row are embedded in the recessed space.
3. The battery module according to claim 2,
the rows include a third row and a fourth row respectively located in the third block,
in the third block, the outer peripheral surfaces of the battery cells of the first row and the battery cells of the second row in the third row define a concave space, and
in the third block, at least a portion of the battery cells of the second row in the fourth row are embedded in the recessed space.
4. The battery module according to claim 1 or 2,
the battery cells of the at least one row in the first block protrude toward one side of the horizontal line, and
the battery cells of the at least one row in the third block protrude toward the side of the horizontal line.
5. A battery module, comprising:
a plurality of battery cells arranged in a plurality of rows and divided into a first block, a second block, and a third block,
a plurality of conductive sheets electrically connected to the battery cells and connecting the battery cells in series or in parallel,
wherein the content of the first and second substances,
the rows include a first row and a second row,
the second block is located between the first block and the third block,
in the second row, the battery cores in the second block are located on a horizontal line, and at least one row of battery cores in the first block and the third block protrudes out of the horizontal line and
each conducting strip comprises a first section, a second section and a third section, wherein the second section is connected between the first section and the third section, and
the extending direction of the first section and the third section of each conducting strip protrudes out of the second section.
6. The battery module according to claim 5,
the battery cells of the at least one row in the first block protrude towards a first side of the horizontal line,
the at least one row of battery cells in the third block protrudes toward the first side of the horizontal line, and the extending directions of the first section and the third section also protrude toward the first side of the horizontal line.
7. The battery module of claim 6, further comprising a circuit board,
the circuit board is disposed to face the first side of the horizontal line,
the conductive sheet comprises a substrate conductive sheet which is closer to the circuit board than other conductive sheets and
the substrate conducting plate further comprises a fourth section, and the fourth section extends towards the substrate conducting plate and is connected to the circuit board.
8. The battery module of claim 7, further comprising a housing for housing the battery cell, the conductive plate, and the circuit board.
9. The battery module according to claim 5 or 6,
in the first block, the rows include a first row and a second row,
in the first block, the peripheral surfaces of the battery cells of the first row and the battery cells of the second row in the second row define a concave space, and
in the first block, at least a portion of the battery cells of the second row in the first row are embedded in the recessed space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910280453.7A CN111799405A (en) | 2019-04-09 | 2019-04-09 | Battery module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910280453.7A CN111799405A (en) | 2019-04-09 | 2019-04-09 | Battery module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111799405A true CN111799405A (en) | 2020-10-20 |
Family
ID=72804949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910280453.7A Pending CN111799405A (en) | 2019-04-09 | 2019-04-09 | Battery module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111799405A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102110795A (en) * | 2009-12-24 | 2011-06-29 | 三洋电机株式会社 | Cylindrical battery pack |
| US20130136969A1 (en) * | 2011-01-25 | 2013-05-30 | Panasonic Corporation | Battery module and battery assembly used in battery module |
| CN206639851U (en) * | 2017-03-15 | 2017-11-14 | 深圳市沃特玛电池有限公司 | A kind of battery modules |
-
2019
- 2019-04-09 CN CN201910280453.7A patent/CN111799405A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102110795A (en) * | 2009-12-24 | 2011-06-29 | 三洋电机株式会社 | Cylindrical battery pack |
| US20130136969A1 (en) * | 2011-01-25 | 2013-05-30 | Panasonic Corporation | Battery module and battery assembly used in battery module |
| CN206639851U (en) * | 2017-03-15 | 2017-11-14 | 深圳市沃特玛电池有限公司 | A kind of battery modules |
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Application publication date: 20201020 |
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| WD01 | Invention patent application deemed withdrawn after publication |