EP4035222A1 - Bloc de batterie - Google Patents
Bloc de batterieInfo
- Publication number
- EP4035222A1 EP4035222A1 EP20757626.5A EP20757626A EP4035222A1 EP 4035222 A1 EP4035222 A1 EP 4035222A1 EP 20757626 A EP20757626 A EP 20757626A EP 4035222 A1 EP4035222 A1 EP 4035222A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- compartment
- battery unit
- battery
- partition wall
- module
- 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
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
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/471—Spacing elements inside cells other than separators, membranes or diaphragms; Manufacturing processes thereof
- H01M50/474—Spacing elements inside cells other than separators, membranes or diaphragms; Manufacturing processes thereof characterised by their position inside the cells
-
- 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
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
-
- 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
-
- 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
- H01M50/571—Methods or arrangements for affording protection against corrosion; Selection of materials therefor
-
- 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
- H01M50/572—Means for preventing undesired use or discharge
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2200/00—Safety devices for primary or secondary batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
-
- 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 invention relates to a battery pack for a hybrid or electric vehicle comprising electrochemical cells for the production, storage and release of electrical energy.
- the invention relates to a battery pack protected in particular against the risk of fire of electrical origin.
- Battery pack is understood to mean an assembly comprising a tray generally containing a mounting interface, connection terminals and at least one battery module containing at least one electrochemical cell and possibly electrical or electronic means for the management of electrical energy from the battery pack.
- the invention applies mainly to the field of motor vehicles, in particular electric vehicles (EV), hybrid electric vehicles (HEV) and rechargeable hybrid electric vehicles (PHEV).
- EV electric vehicles
- HEV hybrid electric vehicles
- PHEV rechargeable hybrid electric vehicles
- the traction batteries of an electric vehicle or a hybrid electric vehicle are generally cells or electrochemical batteries of the lithium-ion type and during the discharge and charge phases various chemical and electrochemical reactions occur, which are generally of an exothermic nature, thus generating heat accumulating inside the battery.
- the temperature levels permitted by the battery require thermal control needs. It is therefore necessary to effectively cool the battery in order to maintain its level of performance and also to limit its aging.
- the presence of water in the battery pack and more generally of a conductive liquid can cause short circuits within an electrochemical cell module.
- a liquid can come from, among other things, a leakage fault in the battery pack, condensation or an internal leak in the water cooling system of the battery pack. Therefore, the hot spot and its spread are very likely.
- a battery unit comprising a casing defining an interior volume, the casing comprising a bottom in which a portion for retaining a liquid conductor is formed, the interior volume comprising an electrical interconnection means electrically isolated from the casing as well as a zone of said electrical interconnection means located at a predetermined altitude h with respect to the retention bottom, said zone being the only zone of said means electrical interconnection having electrical contact with said conductive liquid when said conductive liquid is present at the predetermined altitude.
- an electrical interconnection means electrically isolated from the casing as well as a zone of said electrical interconnection means located at a predetermined altitude h with respect to the retention bottom, said zone being the only zone of said means electrical interconnection having electrical contact with said conductive liquid when said conductive liquid is present at the predetermined altitude.
- the object of the present invention is therefore to overcome these drawbacks by providing a battery pack which makes it possible to limit or even eliminate the risks of short-circuit.
- the invention relates to a battery pack comprising
- the module being housed in the internal volume of the tank characterized in that the tank comprises a partition wall delimiting in the interior volume, a module receiving compartment and a collection compartment, the separation wall having at least one opening allowing the passage of a fluid from the reception compartment to the collection compartment.
- the tray of the battery unit has a compartment in which the fluid which would be present in the receiving compartment where the battery module is located can be collected to prevent this fluid from remaining near the battery module.
- the partition wall extends parallel to the bottom wall of the tank, thus forming a double bottom, the collection compartment being provided between the bottom wall and the double bottom, below the receiving compartment.
- This double bottom has one or more openings making it possible to collect a fluid such as water from the upper volume of the tank corresponding to the receiving compartment for the battery modules, to the lower volume of the tank corresponding to the collection compartment.
- the collection takes place through the opening (s) made in the separation wall by flow by gravity towards the lower volume serving as a collection compartment.
- this prevents fluid such as water from remaining in contact with the battery modules.
- the opening (s) made in the partition wall may respectively comprise means allowing the passage of a fluid only from the receiving compartment to the collecting compartment, such as check valves. returns. This advantageously avoids the rise of the fluid collected towards the receiving compartment.
- the partition wall is a perforated plate, a grid.
- the collection compartment height is chosen sufficient to avoid any risk of overflow, and represents between 1/4 and 1/3 of the height of the tray.
- the bottom of the tank further comprises at least one purge orifice, equipped for example with a sealed bleed screw allowing operators in after-sales service to check the presence of water and the evacuation of this before opening the bins.
- the tray of the battery unit is made of a suitable material such as plastic, aluminum, and has the shape of a box, preferably parallelepiped.
- a suitable material such as plastic, aluminum, and has the shape of a box, preferably parallelepiped.
- Such a container must in particular have mechanical characteristics enabling it to withstand shocks.
- the battery unit is advantageously in a form which can be accommodated directly in a vehicle, the battery unit having all the electrical connection elements necessary for its operation in the vehicle as well as means for implantation and fixing of the unit in the vehicle.
- the invention therefore makes it possible to provide a battery unit in which any risk of short-circuit linked to the presence of water is avoided and whose cooling is optimal while being economically advantageous.
- the invention also relates to a motor vehicle, of the electric vehicle (EV), hybrid electric vehicle (HEV) or rechargeable hybrid electric vehicle (PHEV) type, characterized in that it comprises at least one battery pack as described. above.
- a motor vehicle of the electric vehicle (EV), hybrid electric vehicle (HEV) or rechargeable hybrid electric vehicle (PHEV) type, characterized in that it comprises at least one battery pack as described. above.
- FIG. 1 shows a sectional view of an example of a battery pack according to the invention.
- the battery unit 1 comprises a casing 2 comprising several battery modules 3 respectively constituted by a set of electrochemical cells of the Li-ion type.
- Means for cooling the battery unit are also provided and may contain a generally conductive cooling fluid such as water.
- the casing 2 further comprises a partition wall 21 forming a double bottom and separating the internal volume of the casing 2 into a receiving compartment 22 for the battery modules 3 and a collecting compartment 23.
- This partition wall has one or more openings 4 allowing the passage of a fluid from the receiving compartment 22 to the collection compartment 23, by gravity.
- cooling water E passes through the openings 4 which is represented by arrows, to come and settle in the bottom of the collection compartment 23.
- these openings 4 are provided with a non-return valve preventing the water E from rising to the receiving compartment 22.
- the battery unit 1 also comprises a fuse relay box 5.
- Such a battery unit has the advantage of using battery modules 3 which guarantee control of the heating occurring in the battery unit effectively thanks to the cooling means used and this, while controlling the risk of short -circuit and starting of fire thanks to the compartment of collection.
- the battery unit according to the invention therefore makes it possible to control the risk of short-circuit and of fire while being economically viable, since it is simple to manufacture.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Secondary Cells (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1910525A FR3101201B1 (fr) | 2019-09-24 | 2019-09-24 | Bloc de batterie |
| PCT/FR2020/051328 WO2021058883A1 (fr) | 2019-09-24 | 2020-07-22 | Bloc de batterie |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4035222A1 true EP4035222A1 (fr) | 2022-08-03 |
Family
ID=69810910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20757626.5A Pending EP4035222A1 (fr) | 2019-09-24 | 2020-07-22 | Bloc de batterie |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4035222A1 (fr) |
| CN (1) | CN114430868A (fr) |
| FR (1) | FR3101201B1 (fr) |
| WO (1) | WO2021058883A1 (fr) |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006331956A (ja) * | 2005-05-27 | 2006-12-07 | Sanyo Electric Co Ltd | 車両用の電源装置 |
| KR101393167B1 (ko) * | 2009-05-20 | 2014-05-08 | 존슨 컨트롤즈 테크놀로지, 엘엘씨 | 리튬 이온 배터리 모듈 |
| JP2011258426A (ja) * | 2010-06-09 | 2011-12-22 | Hitachi Vehicle Energy Ltd | 二次電池パック |
| DE102011120234A1 (de) * | 2011-12-05 | 2013-06-06 | Audi Ag | Verfahren zum Fertigen einer Batterie,Batterieanordnung und Baukastensystem |
| EP2608309A1 (fr) * | 2011-12-21 | 2013-06-26 | Fortu Intellectual Property AG | Module de batterie doté d'un boîtier de module de batterie et de cellules de batterie |
| JP6096027B2 (ja) * | 2013-03-27 | 2017-03-15 | 三洋電機株式会社 | 車両用のバッテリシステム及びバッテリシステムを備える電動車両 |
| KR101589996B1 (ko) * | 2013-06-07 | 2016-01-29 | 주식회사 엘지화학 | 액상 냉매 유출에 대한 안전성이 향상된 전지팩 |
| DE102013221137B3 (de) * | 2013-10-17 | 2014-10-30 | Volkswagen Aktiengesellschaft | Kühlsystem für eine Fahrzeugbatterie |
| FR3047453B1 (fr) * | 2016-02-10 | 2018-02-16 | Peugeot Citroen Automobiles Sa | Dispositif de rangement refrigere pour planche de bord de vehicule automobile. |
| WO2017150012A1 (fr) * | 2016-02-29 | 2017-09-08 | 三洋電機株式会社 | Système de batterie et véhicule à propulsion électrique équipé du système de batterie |
| JP2017027962A (ja) * | 2016-11-08 | 2017-02-02 | 三洋電機株式会社 | 車両用のバッテリシステム及びバッテリシステムを備える電動車両 |
| FR3062955B1 (fr) | 2017-02-15 | 2021-03-12 | Peugeot Citroen Automobiles Sa | Bloc batterie |
| CN107689468B (zh) * | 2017-10-11 | 2024-04-02 | 华霆(合肥)动力技术有限公司 | 液冷导流装置及电池模组 |
| CN207183470U (zh) * | 2017-10-11 | 2018-04-03 | 华霆(合肥)动力技术有限公司 | 液冷导流装置及电池模组 |
| FR3076664B1 (fr) * | 2018-01-10 | 2024-03-15 | Valeo Systemes Thermiques | Systeme de refroidissement d'au moins une batterie de vehicule automobile |
| FR3077430B1 (fr) * | 2018-01-29 | 2020-02-14 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | Module d'accumulateurs electriques et batterie comprenant plusieurs modules |
| CN109273635A (zh) * | 2018-09-27 | 2019-01-25 | 力神动力电池系统有限公司 | 一种高倍率充电液冷电池箱 |
| CN109638377B (zh) * | 2018-10-23 | 2021-06-08 | 蔚来(安徽)控股有限公司 | 电池冷却系统、车辆换电系统及电池冷却控制方法 |
-
2019
- 2019-09-24 FR FR1910525A patent/FR3101201B1/fr active Active
-
2020
- 2020-07-22 WO PCT/FR2020/051328 patent/WO2021058883A1/fr not_active Ceased
- 2020-07-22 EP EP20757626.5A patent/EP4035222A1/fr active Pending
- 2020-07-22 CN CN202080066470.1A patent/CN114430868A/zh active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| FR3101201A1 (fr) | 2021-03-26 |
| CN114430868A (zh) | 2022-05-03 |
| FR3101201B1 (fr) | 2023-07-14 |
| WO2021058883A1 (fr) | 2021-04-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
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| 17P | Request for examination filed |
Effective date: 20220207 |
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| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
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| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) | ||
| RAP3 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: STELLANTIS AUTO SAS |