CN109004133B - Battery module and battery pack - Google Patents
Battery module and battery pack Download PDFInfo
- Publication number
- CN109004133B CN109004133B CN201810835822.XA CN201810835822A CN109004133B CN 109004133 B CN109004133 B CN 109004133B CN 201810835822 A CN201810835822 A CN 201810835822A CN 109004133 B CN109004133 B CN 109004133B
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- China
- Prior art keywords
- battery
- isolating piece
- battery packs
- arc
- packs
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
- H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
- H01M50/213—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/24—Alkaline accumulators
- H01M10/30—Nickel accumulators
-
- 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
-
- 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, wherein a plurality of groups of battery packs are arranged in a staggered mode in a layered mode, each group of battery packs is divided into two groups, the battery packs on the same layer are in close contact, two ends of the battery packs are respectively fixed on an end fixing device, a first isolating piece is arranged in a gap formed between every two adjacent layers of battery packs in a matched mode, two side plates are arranged on two sides of the battery packs, a top plate is arranged at the tops of the battery packs, the end fixing devices and the side plates are fixed on a bottom plate, a second isolating piece is arranged in a gap formed between the battery pack on the uppermost layer and the top plate in a matched mode, a third isolating piece is arranged in a gap formed between the battery pack on the lowermost layer and the bottom plate in a matched mode, and a fourth isolating piece is arranged in a gap formed between two sides of the battery packs and the corresponding side plate in a matched mode. Also provides a battery pack manufactured by using the battery module. The battery module provided by the invention has the advantages of simple and compact structure, high volume energy density and high overall strength.
Description
Technical Field
The invention relates to a battery module and a battery pack manufactured by using the same.
Background
With the rapid development of new energy industries, the application of a battery module manufactured by a secondary battery as a power source and an energy storage device is wider and wider, but with the continuous updating and replacement of products, the size and the shape of a space for installing the battery module or a battery pack in the product are also continuously changed, and the structure of the battery module or the battery pack is also continuously changed to meet the requirements of customers. However, since some products have smaller use space and lower ambient temperature, the battery module with the existing structure cannot completely meet the requirements of customers.
Disclosure of Invention
The invention aims to provide a battery module which is simple and compact in structure and high in volume energy density. Also provides a battery pack manufactured by using the battery module.
The invention is realized by the following scheme:
a battery module comprises a plurality of groups of battery packs, wherein each group of battery packs comprises a plurality of single batteries which are connected in series, and the battery pack further comprises a top plate, a bottom plate and two side plates, the groups of battery packs are arranged in a staggered mode in a layering mode, the number of each group of battery packs is two, the gaps between the groups of battery packs in the same layer are 0, the two ends of each group of battery packs are fixed on an end fixing device respectively, the two pole ends of each group of battery pack penetrate through extreme perforations of the end fixing device respectively and are partially exposed, a first isolating piece is arranged in a gap formed between every two adjacent layers of battery packs in a matched mode, the two side plates are arranged on the two sides of each group of battery packs and fixed on the end fixing device, the top plate is arranged at the tops of the groups of battery packs and fixed on the side plates, the end fixing devices and the side plates are both fixed on the bottom plate, and a second isolating piece is arranged in a matched mode in a gap formed between the top layer of battery packs and the top plate, the battery pack structure is characterized in that a third isolating piece is arranged in a gap formed between the lowest battery pack and the bottom plate in a matched mode, fourth isolating pieces are arranged in gaps formed between the two sides of the plurality of battery packs and the corresponding side plates in a matched mode, and the plurality of battery packs are connected in series or/and in parallel. The first separator, the second separator, the third separator and the fourth separator can play a supporting role and an insulating role in the first separator, the second separator, the third separator and the fourth separator, and the strength of the whole battery module can be enhanced.
In order to improve the contact tightness between the isolating piece and the corresponding battery pack, the first isolating piece is integrally of a triangular prism structure, and three side surfaces of the first isolating piece are arc-shaped; the cross section of the second isolating piece is V-shaped, two outer side surfaces of the second isolating piece are both arc-shaped, and the structure of the third isolating piece is the same as that of the second isolating piece; the fourth separator is in a trapezoid shape in front view, and the top surface and the two side surfaces of the fourth separator are both in arc shapes. The arc-shaped sizes of the arc-shaped surfaces of the first isolating piece, the second isolating piece, the third isolating piece and the fourth isolating piece are matched with the outer diameter of the corresponding battery pack.
In order to improve the contact tightness of the joint parts on the partition piece and the corresponding battery pack, a plurality of first arc-shaped through grooves are formed in three side faces of the first partition piece, a plurality of second arc-shaped through grooves are formed in two outer side faces of the second partition piece, a third arc-shaped through groove is formed in the top face and the two side faces of the fourth partition piece, and the first arc-shaped through groove, the second arc-shaped through groove and the third arc-shaped through groove are respectively matched with the joint parts on the corresponding battery pack in a one-to-one matching mode. During actual manufacturing, three side surfaces of the first isolating piece are respectively matched with the corresponding battery pack and a joint part on the battery pack (namely a connecting part of two single batteries in the battery pack) to be tightly clamped together; two outer side surfaces of the second isolating piece are respectively matched with the corresponding battery pack and a joint part on the battery pack to be tightly clamped together, and two end surfaces of the V-shaped opening of the second isolating piece are tightly contacted with the top plate; two outer side surfaces of the third isolating piece are respectively matched with the corresponding battery pack and a joint part on the battery pack to be tightly clamped together, and two end surfaces of the V-shaped opening of the third isolating piece are tightly contacted with the bottom plate; the top surface and the two side surfaces of the fourth isolating piece are mutually matched with the corresponding battery pack and the joint part on the battery pack and are tightly clamped together, and the bottom surface of the fourth isolating piece is tightly contacted with the side plate.
Furthermore, the top and the bottom of the inward side of the side plate are respectively and vertically provided with a mounting and fixing plate. The side plate is used for installing and fixing the top plate on the top of the inward side, and the side plate is used for fixing the side plate and the bottom plate together on the bottom of the inward side.
Furthermore, the top and the bottom of the outward side of the end fixing device are respectively and vertically provided with an outward protruding part, so that the insulation protection effect can be achieved. In general, the extreme through holes of the end fixing device may be configured in different shapes, such as a square and a hexagon, four corners of the square extreme through holes are configured in a chamfered structure, and if the square extreme through holes are used to mate with the anode extremes of the corresponding battery packs, the hexagonal extreme through holes are used to mate with the cathode extremes of the corresponding battery packs; or the square extreme perforation is used for matching with the cathode extreme of the corresponding battery pack, and the hexagonal extreme perforation is used for matching with the anode extreme of the corresponding battery pack.
In order to enable heat generated by the battery pack to be rapidly dissipated, the top plate and the two side plates are provided with heat dissipation holes.
The both ends of bottom plate are provided with the clamp plate respectively, and the clamp plate can be used for passing through the box of bottom plate installation fixed battery package with whole battery module.
The battery pack comprises a box body, an upper cover and a plurality of battery modules, wherein the battery modules are arranged in the box body, the battery modules are mutually connected in series or/and in parallel, and the upper cover and the box body are mutually matched and sealed together.
The battery module has the following advantages:
1. the structure is simple and compact, the volume is small, the manufacture is convenient, the volume energy density is higher, and the volume energy density is higher than that of the existing battery module by more than 50 percent;
2. the first isolating piece, the second isolating piece, the third isolating piece and the fourth isolating piece are arranged in a matched mode, so that the contact fastening performance between two adjacent layers of battery packs, between the battery pack at the uppermost layer and the top plate, between the battery pack at the lowermost layer and the bottom plate and between the two sides of the battery packs and the side plates can be improved;
3. the heat dissipation holes are formed in the top plate and the side plates, so that the heat dissipation capacity of the battery module is improved;
4. the spacers are filled in the gaps among the battery packs of the battery module, between the battery packs and the top plate, between the battery packs and the bottom plate and between the battery packs and the side plates in a matched manner, so that the vacant gaps in the whole battery module are almost zero, and a partial heat concentration area exists in the battery module, and the service performance of the battery module in a low-temperature environment can be improved by combining the characteristic that the heat is generated greatly under the condition of high-rate charge and discharge of a nickel-metal hydride battery, and the application range of a product is further enlarged;
5. the battery module can be used independently, can also be used for manufacturing a battery pack, and the battery pack manufactured by using the battery module has compact space, so that the occupied area of the whole battery pack can be reduced.
Drawings
Fig. 1 is a schematic view of the overall structure of a battery module in embodiment 1;
fig. 2 is a schematic structural view of a battery module (without a top plate and a front side plate) in example 1;
fig. 3 is an exploded view of a battery module according to example 1;
FIG. 4 is a schematic view showing the structure of an end fixing device in embodiment 1;
FIG. 5 is a schematic structural view of a first separator in embodiment 1;
FIG. 6 is a schematic structural view of a side plate in embodiment 1;
FIG. 7 is a schematic structural view of a second separator in embodiment 1;
fig. 8 is a schematic structural view of a fourth separator according to embodiment 1.
Detailed Description
The present invention will be further described with reference to the following examples, but the present invention is not limited to the description of the examples.
Example 1
A battery module comprises ten groups of battery packs 1, a top plate 2, a bottom plate 3 and two side plates 4, wherein each group of battery pack 1 comprises five single batteries which are connected in series, the ten groups of battery packs 1 are arranged in a layered staggered manner, the number of each layer of battery pack 1 is two, the battery packs 1 in the same layer are in close contact, namely the gap between the battery packs 1 is 0, two ends of each group of battery packs 1 are respectively fixed on an end fixing device 5, two pole ends of each group of battery packs 1 respectively penetrate through an extreme through hole 51 of the end fixing device 5 and are partially exposed, the top and the bottom of the outward side of the end fixing device 5 are respectively and vertically provided with an outward bulge part 52, the extreme through holes 51 of the end fixing device 5 are arranged into a hexagon and a square with four corners in a chamfer structure, the square extreme through hole is used for matching with the anode extreme of the corresponding battery pack, the hexagon extreme through hole is used for matching with the cathode extreme of the corresponding battery, the schematic structural view of the end fixing device is shown in fig. 4; first isolating pieces 7 (only two first isolating pieces are illustrated in fig. 2) are arranged in a gap formed between two adjacent layers of battery packs 1 in a matched manner, as shown in fig. 5, the whole first isolating pieces 7 are of a triangular prism structure, three side surfaces of each first isolating piece 7 are arc-shaped, a plurality of first arc-shaped through grooves 71 are formed in the three side surfaces of each first isolating piece 7, and the first arc-shaped through grooves 71 are correspondingly matched and clamped with joint parts on the corresponding battery packs 1 one by one; the top and the bottom of the inward side of the side plate 4 are respectively and vertically provided with a mounting fixing plate 41, and the structural schematic diagram of the side plate is shown in fig. 6; two side plates 4 are arranged at two sides of ten groups of battery packs 1 and fixed on an end fixing device 5, a top plate 2 is arranged at the top of the ten groups of battery packs 1 and fixed on a mounting fixing plate 41 at the top of the inward side of the side plates 4, the end fixing device 5 and the side plates 4 are both fixed on a bottom plate 3, the side plates 4 are fixed on the bottom plate 3 through the mounting fixing plate 41 at the bottom of the inward side, heat dissipation holes 8 are respectively arranged on the top plate 2 and the two side plates 4, two ends of the bottom plate 3 are respectively provided with a pressing plate 9, a second isolating piece 10 is arranged in a gap formed between the battery pack 1 at the uppermost layer and the top plate 2 in a matching way, as shown in figure 7, the cross section of the second isolating piece 10 is V-shaped, two outer side surfaces of the second isolating piece 10 are both arc-shaped, a plurality of second arc through grooves 101 are respectively arranged on the two outer side surfaces of the second isolating piece 10, the second arc through grooves 101 are correspondingly matched and clamped with joint parts on the corresponding battery packs 1 one by one, the third isolating piece 11 is arranged in a gap formed between the lowest layer battery pack 1 and the bottom plate 3 in a matched mode, the structure of the third isolating piece 11 is the same as that of the second isolating piece 10, the fourth isolating piece 12 is arranged in a matched mode in a gap formed between the two sides of the ten groups of battery packs 1 and the corresponding side plates 4, as shown in fig. 8, the fourth isolating piece 12 is in a trapezoid shape in front view, the top surface and the two side surfaces of the fourth isolating piece 12 are both arc-shaped, a third arc-shaped through groove 121 is formed in the top surface and the two side surfaces of the fourth isolating piece 12, the third arc-shaped through groove 121 and joint parts on the corresponding battery packs 1 are correspondingly matched and clamped together one by one, and the ten groups of battery packs 1 are firstly connected with the battery packs 1 on the same side in parallel through the copper bars 6 and then connected with the battery packs 1 on the two sides in series.
Example 2
A battery module having a structure similar to that of the battery module of embodiment 1, except that: the number of the battery packs is fourteen, and the fourteen battery packs are mutually connected in series.
Example 3
The utility model provides a battery pack, includes box, upper cover and two battery module as embodiment 1, two battery modules are fixed side by side and are arranged in the box, and two battery modules are established ties each other and are in the same place, and the upper cover seals together with the box is mutually supporting.
Claims (6)
1. The utility model provides a battery module, includes a plurality of group battery, the group battery includes the monomer battery of a plurality of series connection each other, its characterized in that: the battery pack comprises a plurality of battery packs, and is characterized by further comprising a top plate, a bottom plate and two side plates, wherein the plurality of battery packs are arranged in a staggered manner in a layered manner, each layer of battery pack is divided into two groups, the battery packs are in close contact with each other, two ends of each group of battery packs are respectively fixed on an end fixing device, two pole ends of each group of battery packs respectively penetrate through extreme perforations of the end fixing device and are partially exposed, a first isolating piece is arranged in a gap formed between every two adjacent layers of battery packs in a matched manner, the two side plates are arranged at two sides of each group of battery packs and fixed on the end fixing devices, the top plate is arranged at the tops of the battery packs and fixed on the side plates, the end fixing devices and the side plates are both fixed on the bottom plate, a second isolating piece is arranged in a matched manner in a gap formed between the battery pack at the uppermost layer and the top plate, a third isolating piece is arranged in a matched manner in a gap formed between the battery pack at the lowermost layer and the corresponding side plate, and a fourth isolating piece is arranged in a matched manner in a gap formed between the battery packs at two sides of the plurality of the battery packs and the corresponding side plates, a plurality of groups of battery packs are mutually connected in series or/and in parallel;
the first isolating piece is integrally of a triangular prism structure, and three side surfaces of the first isolating piece are arc-shaped; the cross section of the second isolating piece is V-shaped, two outer side surfaces of the second isolating piece are both arc-shaped, and the structure of the third isolating piece is the same as that of the second isolating piece; the front view of the fourth isolating piece is trapezoidal, and the top surface and two side surfaces of the fourth isolating piece are both arc-shaped; all seted up the first arc of a plurality of and led to the groove on the three side of first isolator a plurality of second arc has been all seted up on two lateral surfaces of second isolator and has been led to the groove the top surface of fourth isolator and all seted up a third arc and led to the groove on two sides, first arc leads to the groove, second arc leads to the groove, the groove is led to the groove and is joined in marriage the suit card with the joint part one-to-one on the corresponding group battery respectively to the third arc and be in the same place.
2. The battery module according to claim 1, wherein: the top and the bottom of the inward side of the side plate are respectively and vertically provided with a mounting and fixing plate.
3. The battery module according to claim 1, wherein: the top and the bottom of the outward side of the end fixing device are respectively and vertically provided with an outward protruding part.
4. The battery module according to any one of claims 1 to 3, wherein: the heat dissipation holes are formed in the top plate and the two side plates.
5. The battery module according to any one of claims 1 to 3, wherein: and pressing plates are respectively arranged at two ends of the bottom plate.
6. A battery pack, comprising: the battery module comprises a box body, an upper cover and a plurality of battery modules according to any one of claims 1 to 5, wherein the plurality of battery modules are arranged in the box body, the plurality of battery modules are mutually connected in series or/and in parallel, and the upper cover and the box body are mutually matched and sealed together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810835822.XA CN109004133B (en) | 2018-07-26 | 2018-07-26 | Battery module and battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810835822.XA CN109004133B (en) | 2018-07-26 | 2018-07-26 | Battery module and battery pack |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109004133A CN109004133A (en) | 2018-12-14 |
| CN109004133B true CN109004133B (en) | 2021-10-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810835822.XA Active CN109004133B (en) | 2018-07-26 | 2018-07-26 | Battery module and battery pack |
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| Country | Link |
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| CN (1) | CN109004133B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110635189B (en) * | 2019-10-16 | 2022-06-07 | 湖南科霸汽车动力电池有限责任公司 | Battery module maintenance frock that charges |
| CN112151717B (en) * | 2020-08-27 | 2023-06-02 | 深圳先进储能材料国家工程研究中心有限公司 | Split hanging type energy storage box |
| CN112382819B (en) * | 2020-09-29 | 2022-08-19 | 益阳科力远新能源有限公司 | Battery module and preparation method thereof |
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| JP2006134801A (en) * | 2004-11-09 | 2006-05-25 | Sanyo Electric Co Ltd | Battery pack |
| CN101036250A (en) * | 2004-10-08 | 2007-09-12 | 本田技研工业株式会社 | Battery box structure, inter-locking structure of electrical equipment box, and electrical equipment box structure |
| JP2007234369A (en) * | 2006-02-28 | 2007-09-13 | Sanyo Electric Co Ltd | Battery pack |
| CN101385160A (en) * | 2006-02-13 | 2009-03-11 | 株式会社Lg化学 | Spacer for production of battery pack |
| JP2009099452A (en) * | 2007-10-18 | 2009-05-07 | Max Co Ltd | Battery pack |
| CN101820053A (en) * | 2005-12-27 | 2010-09-01 | 株式会社Lg化学 | Battery pack spacer |
| CN101944579A (en) * | 2010-07-30 | 2011-01-12 | 湖南科霸汽车动力电池有限责任公司 | Method and device for assembling power batteries in square energy pack |
| WO2011149075A1 (en) * | 2010-05-28 | 2011-12-01 | 株式会社キャプテックス | Spacer for battery pack module and battery pack module using the same |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6170753B2 (en) * | 2013-06-14 | 2017-07-26 | 矢崎総業株式会社 | Cylindrical battery housing case |
-
2018
- 2018-07-26 CN CN201810835822.XA patent/CN109004133B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101036250A (en) * | 2004-10-08 | 2007-09-12 | 本田技研工业株式会社 | Battery box structure, inter-locking structure of electrical equipment box, and electrical equipment box structure |
| JP2006134801A (en) * | 2004-11-09 | 2006-05-25 | Sanyo Electric Co Ltd | Battery pack |
| CN101820053A (en) * | 2005-12-27 | 2010-09-01 | 株式会社Lg化学 | Battery pack spacer |
| CN101385160A (en) * | 2006-02-13 | 2009-03-11 | 株式会社Lg化学 | Spacer for production of battery pack |
| JP2007234369A (en) * | 2006-02-28 | 2007-09-13 | Sanyo Electric Co Ltd | Battery pack |
| JP2009099452A (en) * | 2007-10-18 | 2009-05-07 | Max Co Ltd | Battery pack |
| WO2011149075A1 (en) * | 2010-05-28 | 2011-12-01 | 株式会社キャプテックス | Spacer for battery pack module and battery pack module using the same |
| CN101944579A (en) * | 2010-07-30 | 2011-01-12 | 湖南科霸汽车动力电池有限责任公司 | Method and device for assembling power batteries in square energy pack |
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| Publication number | Publication date |
|---|---|
| CN109004133A (en) | 2018-12-14 |
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Effective date of registration: 20210804 Address after: 410100 first floor, building 10, advanced energy storage and energy conservation demonstration Industrial Park, No. 169, Section 2, Renmin East Road, Changsha Economic and Technological Development Zone, Hunan Province Applicant after: NATIONAL ENGINEERING RESEARCH OF ADVANCED ENERGY STORAGE MATERIALS Address before: 410205 No. 348, west slope, Tongzi high tech Development Zone, Hunan, Changsha Applicant before: HUNAN COPOWER EV BATTERY Co.,Ltd. |
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