WO2024255914A1 - Bloc-batterie et système de stockage d'énergie - Google Patents

Bloc-batterie et système de stockage d'énergie Download PDF

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Publication number
WO2024255914A1
WO2024255914A1 PCT/CN2024/099825 CN2024099825W WO2024255914A1 WO 2024255914 A1 WO2024255914 A1 WO 2024255914A1 CN 2024099825 W CN2024099825 W CN 2024099825W WO 2024255914 A1 WO2024255914 A1 WO 2024255914A1
Authority
WO
WIPO (PCT)
Prior art keywords
battery
panel
battery pack
output row
terminal
Prior art date
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.)
Pending
Application number
PCT/CN2024/099825
Other languages
English (en)
Chinese (zh)
Inventor
李伟
董亚鹏
区彩霞
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Eve Energy Co Ltd
Original Assignee
Eve Energy Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Eve Energy Co Ltd filed Critical Eve Energy Co Ltd
Publication of WO2024255914A1 publication Critical patent/WO2024255914A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
    • 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
    • H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
    • 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
    • H01M50/505—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising a single busbar
    • 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

Definitions

  • the present application relates to the field of energy storage technology, and in particular to a battery pack and an energy storage system.
  • Energy storage systems are widely used and can be used in many scenarios such as homes, industrial equipment, unstable power, and power storage and power generation in areas without electricity to optimize energy saving.
  • Energy storage systems usually include multiple battery packs, which are arranged in a vertical stacking manner.
  • the positive terminals of adjacent battery packs are connected by wires, and the negative terminals of adjacent battery packs are connected by wires, so as to realize the parallel connection of multiple battery packs.
  • the positive and negative terminals are led out from the same side, and the positive and negative terminals are arranged adjacent to each other, which leads to dense and messy wiring when parallel wiring, inconvenient maintenance in the later stage, and the positive and negative electrodes are easily short-circuited by mistake.
  • the present application provides a battery pack that can avoid dense and messy wiring when the battery packs are connected in parallel, thereby reducing the risk of short circuits.
  • the present application provides an energy storage system, which, by providing the above-mentioned battery pack, can avoid dense and messy wiring when the battery packs are connected in parallel, facilitate later maintenance, and reduce the risk of short circuit.
  • an embodiment of the present application provides a battery pack, comprising:
  • a box body wherein a first panel of the box body is provided with a first terminal and a second terminal, the length direction of the first panel is a first direction, and the first terminal and the second terminal are respectively located on both sides of the first panel along the first direction;
  • a battery module is arranged in the box, and the battery module includes a plurality of battery cells arranged in series.
  • the battery cells located at the head end of the series loop are connected to the first output row, and the battery cells located at the end of the series loop are connected to the second output row.
  • the first output row and the second output row are respectively located on both sides of the battery module along the first direction.
  • the first output row is electrically connected to the first terminal, and the second output row is electrically connected to the second terminal.
  • an embodiment of the present application provides an energy storage system, comprising a plurality of the above-mentioned battery packs, wherein the plurality of battery packs are stacked and arranged in parallel along the height direction of the first panel, the first terminal heads of the plurality of battery packs are located on the same side and connected by a first power line, and the second terminal heads of the plurality of battery packs are located on the same side and connected by a second power line.
  • the present application provides a battery pack, which leads the first output row and the second output row from both sides of the battery module along the first direction, and on this basis, facilitates the first terminal and the second terminal to be led out on both sides of the first panel along the first direction, so that the first output row corresponds to the position of the first terminal, and the second output row corresponds to the position of the second terminal. Since the first terminal and the second terminal are separately arranged on both sides, when multiple battery packs are connected in parallel, the wiring can be clear and regular, which is convenient for parallel installation and later maintenance, and it is not easy to connect the positive and negative poles incorrectly, reducing the risk of short circuit.
  • the energy storage system provided in the present application by providing the above-mentioned battery pack, can avoid dense and messy wiring when the battery packs are connected in parallel, facilitate subsequent maintenance, and reduce the risk of short circuit.
  • FIG1 is a schematic diagram of the structure of an energy storage system provided in an embodiment of the present application.
  • FIG2 is a schematic diagram of the structure of a battery pack provided in an embodiment of the present application.
  • FIG3 is a schematic diagram of the structure of a battery pack without a housing provided in an embodiment of the present application.
  • FIG4 is a schematic diagram of the structure of multiple battery cells after assembly according to an embodiment of the present application.
  • FIG5 is a schematic diagram of the structure of a single battery module provided in an embodiment of the present application.
  • FIG. 6 is a schematic diagram of the structure of two battery modules provided in an embodiment of the present application.
  • This embodiment provides a battery pack 100 and an energy storage system, as shown in FIG1 , the energy storage system includes a plurality of battery packs 100, and the plurality of battery packs 100 are stacked and arranged in parallel.
  • the battery packs 100 are arranged to be three, and in other embodiments, the battery packs 100 may also be arranged to be other numbers according to actual needs, which is not limited here.
  • the battery pack 100 includes a box body 10 and a battery module 20 disposed in the box body 10, wherein the box body 10 includes a shell 12 and a first panel 11, one end of the shell 12 is open, and the first panel 11 is located at the front side of the shell 12 and is configured to block the opening of the shell 12 to form a closed cavity.
  • the length direction of the box body 10 is the front-to-back direction, which is the second direction mentioned later
  • the width direction of the box body 10 is the left-to-right direction, which is the first direction mentioned later
  • the height direction of the box body 10 is the up-down direction, which is the height direction and the third direction of the first panel 11 mentioned later.
  • a first terminal 111 and a second terminal 112 are provided on the first panel 11 of the box body 10.
  • the first terminal 111 and the second terminal 112 are respectively located on both sides of the first panel 11 along the first direction (left-right direction).
  • One of the first terminal 111 and the second terminal 112 is a positive terminal and the other is a negative terminal.
  • the battery module 20 includes a plurality of battery cells 21 arranged in series, wherein the battery cells 21 are square shell battery cells, and the plurality of battery cells 21 are connected in series in sequence to form a series circuit, wherein the battery cell 21 located at the head end of the series circuit is connected to a first output row 22, and the battery cell 21 located at the end of the series circuit is connected to a second output row 23, and the first output row 22 and the second output row 23 are respectively located on both sides of the battery module 20 along a first direction (left-right direction), and one of the first output row 22 and the second output row 23 is a positive output row, and the other is a negative output row, and the first output row 22 corresponds to the polarity of the first terminal 111, and the second output row 23 corresponds to the polarity of the second terminal 112, the first output row 22 is electrically connected to the first terminal 111, and the second output row 23 is electrically connected to the second terminal 112, thereby realizing voltage output.
  • first output row 22 and the second output row 23 By leading the first output row 22 and the second output row 23 from the left and right sides of the battery module 20, respectively, on this basis, it is convenient to lead the first terminal 111 and the second terminal 112 from the left and right sides of the first panel 11, respectively, so that the first output row 22 corresponds to the position of the first terminal 111, and the second output row 23 corresponds to the position of the second terminal 112. Since the first terminal 111 and the second terminal 112 are separately arranged on the left and right sides, when multiple battery packs 100 are stacked and connected in parallel along the height direction of the first panel 11, referring to FIG.
  • the first terminals 111 of the multiple battery packs 100 are located on the same side (left side) and connected through the first power line 200, and the second terminals 112 of the multiple battery packs 100 are located on the same side (right side) and connected through the second power line 300, so that the routing of the power line can be clear and regular, which is convenient for parallel installation and later maintenance, and it is not easy to connect the positive and negative poles incorrectly, reducing the risk of short circuit.
  • the battery pack 100 further includes a battery management system (BMS) module 30.
  • the BMS module 30 is disposed in the housing 12 and close to the opening of the housing 12.
  • the front side of the BMS module 30 is provided with a first panel 11, and the first panel 11 is sealed at the open end of the housing 12 to form a closed box 10.
  • the first panel 11 constituting the box 10 is the first panel 11 of the BMS module 30.
  • the box 10 and the BMS module 30 share a first panel 11, which simplifies the structure of the battery pack 100 and saves manufacturing costs.
  • the first output row 22 can be electrically connected to the first terminal 111 through the built-in connection row or wiring harness of the BMS module 30, and the second output row 23 can be electrically connected to the second terminal 112 through the built-in connection row or wiring harness of the BMS module 30.
  • a plurality of battery cells 21 are placed flat and stacked. By placing a plurality of battery cells 21 flat, it is convenient to lead the first output row 22 and the second output row 23 out from the left and right sides of the battery module 20 .
  • the battery pack 100 includes two groups of battery modules 20 , which are arranged side by side along a first direction (left-right direction) and connected in series to form a 48V system.
  • a first output row 22 is provided on the left side of the left battery module 20
  • a second output row 23 is provided on the right side of the right battery module 20 .
  • a battery module 20 includes eight battery cells 21, and the eight battery cells 21 are stacked in two layers in the vertical direction, and four battery cells 21 are placed flat in each layer.
  • Each battery cell 21 includes a first electrode 211 and a second electrode 212, and the first electrode 211 and the second electrode 212 are located on the same side of the battery cell 21, and one of the first electrode 211 and the second electrode 212 is a positive electrode, and the other is a negative electrode.
  • the two battery cells 21 arranged side by side face opposite directions, that is, in the left-right direction, one end of the electrodes of the two battery cells 21 face opposite directions, and the first electrodes 211 and the second electrodes 212 of the two battery cells 21 are arranged alternately, that is, the first electrode 211 of the left battery cell 21 and the second electrode 212 of the right battery cell 21 are located on the same side, and the second electrode 212 of the left battery cell 21 and the first electrode 211 of the right battery cell 21 are located on the same side, the first electrode 211 of one of the left battery cells 21 is connected to the first output row 22, and the second electrode 212 of one of the right battery cells 21 is connected to the second output row 23.
  • the second electrode 212 of the front battery cell 21 and the first electrode 211 of the rear battery cell 21 are disposed adjacent to each other.
  • the large surfaces of two adjacent battery cells 21 are in contact with each other, and the first electrodes 211 and the second electrodes 212 of the two battery cells 21 are alternately arranged, that is, the first electrode 211 of the upper battery cell 21 and the second electrode 212 of the lower battery cell 21 are located on the same side, and the second electrode 212 of the upper battery cell 21 and the first battery cell 21 of the lower battery cell 21 are located on the same side.
  • the two battery cells 21 located on the front side of the upper layer are respectively a head battery cell 213 and a tail battery cell 214
  • the first electrode 211 of the head battery cell 213 is connected to the first output row 22
  • the second electrode 212 of the tail battery cell 214 is connected to the second output row 23
  • the first electrodes 211 and the second electrodes 212 of two adjacent battery cells 21 are connected in series through an intermediate series row 24, and each intermediate series row 24 is connected to the corresponding electrode by welding, riveting, etc.
  • the second output row 23 of the first battery module 20 is connected to the first output row 22 of the second battery module 20, thereby realizing the series connection of the terminal battery cell 214 of the first battery module 20 and the head battery cell 213 of the second battery module 20, and then realizing the series connection of the two battery modules 20.
  • the first output row 22 of the first battery module 20 and the second output row 23 of the second battery module 20 are located at the left and right ends respectively, and the first output row 22 of the first battery module 20 is communicatively connected to the first terminal 111, and the second output row 23 of the second battery module 20 is communicatively connected to the second terminal 112.
  • the multiple battery cells 21 in the battery module 20 By arranging the multiple battery cells 21 in the battery module 20 in a flat and stacked arrangement, it is convenient to lead out the first output row 22 and the second output row 23 from the left and right ends of the battery module 20 respectively, so as to facilitate the first terminal 111 and the second terminal 112 to be led out on the left and right sides of the first panel 11 respectively.
  • the routing of the power lines can be ensured to be clear and regular, which is convenient for parallel installation and subsequent maintenance, and it is not easy to connect the positive and negative poles incorrectly, reducing the risk of short circuit.
  • different voltage requirements may also be met by changing the number of battery cells 21 connected in series in each battery module 20 or by changing the number of battery modules 20 .
  • a first communication port 113 and a second communication port 114 are further provided on the first panel 11 , and the first communication port 113 and the second communication port 114 are arranged at intervals along the height direction (up and down direction) of the first panel 11 .
  • the first communication port 113 of one battery pack 100 and the second communication port 114 of the adjacent battery pack 100 are arranged adjacent to each other and are connected to each other through a communication line 400 and the communication connection is realized through the communication line 400 , and the first communication port 113 of the uppermost battery pack 100 and the second communication port 114 of the lowermost battery pack 100 are respectively connected to the external device through the communication line 400 to realize the function of communicating with the external device.
  • a temperature averaging plate 27 is provided between two adjacent battery cells 21 in the third direction, and the temperature averaging plate 27 is in contact with the large surface of the battery cell 21, so that the contact area between the temperature averaging plate 27 and the battery cell 21 is as large as possible, thereby increasing the effective heat dissipation area and thermal conductivity, and enhancing the temperature consistency between the battery cells 21.
  • the temperature averaging plate 27 is a copper plate with good thermal conductivity. In practical applications, a whole temperature averaging plate 27 can be placed directly between the upper and lower layers of battery cells 21.
  • the temperature averaging plate 27 is hollow and filled with phase change material, such as a copper vapor chamber (VC).
  • phase change material such as a copper vapor chamber (VC).
  • the battery module 20 further includes two fixing belts 26 and two end plates 25.
  • the two end plates 25 are opposite and spaced apart, and a plurality of battery cells 21 are located between the two end plates 25.
  • the two fixing belts 26 are respectively mounted on the two end plates 25 to bundle and fix the battery cells 21 and the end plates 25 to form an integrated battery module 20, thereby ensuring the overall firmness of the battery module 20.
  • the fixing belt 26 can be a steel belt, which has a high structural strength.
  • a limiting groove is provided on the end plate 25, and the fixing belt 26 is accommodated in the limiting groove to limit the fixing belt 26, thereby ensuring that the fixing belt 26 is not easily displaced during the bundling process, thereby improving the stability of the bundling.
  • a handle 115 is provided on the first panel 11. By providing the handle 115, the battery pack 100 can be easily taken in and out.
  • the handle 115 may be hinged on the first panel 11, and the first panel 11 may be provided with a groove configured to accommodate the handle 115.
  • the handle 115 may be rotated into the groove for storage, which does not affect the normal use of the battery pack 100; when the handle 115 is needed, the handle 115 may be rotated out of the groove, and the battery pack 100 may be taken in and out through the handle 115, which is flexible and convenient to use.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

L'invention concerne un bloc-batterie (100) et un système de stockage d'énergie. Le système de stockage d'énergie comprend un bloc-batterie (100). Le bloc-batterie (100) comprend un boîtier (10) et un module de batterie (20), une première borne de câblage (111) et une seconde borne de câblage (112) étant disposées sur un premier panneau (11) du boîtier (10), et la première borne de câblage (111) et la seconde borne de câblage (112) étant respectivement situées sur deux côtés du premier panneau (11) dans une première direction ; et le module de batterie (20) est disposé dans le boîtier (10), et comprend une pluralité d'éléments de batterie (21) agencés en série, l'élément de batterie (21) situé au niveau d'une extrémité de tête d'un circuit en série étant connecté à une première barre de sortie (22), l'élément de batterie (21) situé au niveau d'une extrémité de queue du circuit en série étant connecté à une seconde barre de sortie (23), la première barre de sortie (22) et la seconde barre de sortie (23) étant respectivement situées sur deux côtés du module de batterie (20) dans la première direction, la première barre de sortie (22) étant électriquement connectée à la première borne de câblage (111), et la seconde barre de sortie (23) étant électriquement connectée à la seconde borne de câblage (112). En disposant séparément la première borne de câblage (111) et la seconde borne de câblage (112) sur deux côtés, lorsqu'une pluralité de blocs-batteries (100) sont connectés en parallèle, un câblage clair et régulier peut être assuré, les blocs-batteries (100) sont pratiques à monter en parallèle, et des électrodes positive et négative ne sont pas susceptibles d'être connectées de manière incorrecte, ce qui permet de réduire le risque de court-circuit.
PCT/CN2024/099825 2024-04-26 2024-06-18 Bloc-batterie et système de stockage d'énergie Pending WO2024255914A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202420894107.4 2024-04-26
CN202420894107.4U CN222562919U (zh) 2024-04-26 2024-04-26 一种电池包及储能系统

Publications (1)

Publication Number Publication Date
WO2024255914A1 true WO2024255914A1 (fr) 2024-12-19

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Application Number Title Priority Date Filing Date
PCT/CN2024/099825 Pending WO2024255914A1 (fr) 2024-04-26 2024-06-18 Bloc-batterie et système de stockage d'énergie

Country Status (2)

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CN (1) CN222562919U (fr)
WO (1) WO2024255914A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN121192376B (zh) * 2025-11-26 2026-03-06 深圳市德兰明海新能源股份有限公司 一种电连接器、电池包及储能系统

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CN209929394U (zh) * 2019-06-26 2020-01-10 惠州比亚迪电池有限公司 电池模组、电池包及电动汽车
CN212542626U (zh) * 2020-07-31 2021-02-12 蜂巢能源科技有限公司 动力电池模组及电池包
CN112909401A (zh) * 2021-01-19 2021-06-04 孚能科技(赣州)股份有限公司 一种电池模组以及电池包
CN216793863U (zh) * 2022-01-26 2022-06-21 蜂巢能源科技股份有限公司 电池模组及电池包
CN218975564U (zh) * 2022-11-25 2023-05-05 江西赣锋锂电科技股份有限公司 一种电芯堆叠模组
CN219575837U (zh) * 2023-03-10 2023-08-22 上海思格源智能科技有限公司 一种电池模组及电池包
CN220253379U (zh) * 2023-05-15 2023-12-26 广东汇创新能源有限公司 一种高安全性能的电池包用机箱
DE202023106840U1 (de) * 2023-05-18 2024-01-04 Jinko Energy Storage Technology Co., Ltd. Batteriemodul und Batteriepack
CN220492046U (zh) * 2023-05-15 2024-02-13 广东汇创新能源有限公司 一种高安全性能的小型化电池包

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN209929394U (zh) * 2019-06-26 2020-01-10 惠州比亚迪电池有限公司 电池模组、电池包及电动汽车
CN212542626U (zh) * 2020-07-31 2021-02-12 蜂巢能源科技有限公司 动力电池模组及电池包
CN112909401A (zh) * 2021-01-19 2021-06-04 孚能科技(赣州)股份有限公司 一种电池模组以及电池包
CN216793863U (zh) * 2022-01-26 2022-06-21 蜂巢能源科技股份有限公司 电池模组及电池包
CN218975564U (zh) * 2022-11-25 2023-05-05 江西赣锋锂电科技股份有限公司 一种电芯堆叠模组
CN219575837U (zh) * 2023-03-10 2023-08-22 上海思格源智能科技有限公司 一种电池模组及电池包
CN220253379U (zh) * 2023-05-15 2023-12-26 广东汇创新能源有限公司 一种高安全性能的电池包用机箱
CN220492046U (zh) * 2023-05-15 2024-02-13 广东汇创新能源有限公司 一种高安全性能的小型化电池包
DE202023106840U1 (de) * 2023-05-18 2024-01-04 Jinko Energy Storage Technology Co., Ltd. Batteriemodul und Batteriepack

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