CN114300798A - Battery cell module housing for receiving a battery module - Google Patents

Battery cell module housing for receiving a battery module Download PDF

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Publication number
CN114300798A
CN114300798A CN202111170121.7A CN202111170121A CN114300798A CN 114300798 A CN114300798 A CN 114300798A CN 202111170121 A CN202111170121 A CN 202111170121A CN 114300798 A CN114300798 A CN 114300798A
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CN
China
Prior art keywords
cell module
module housing
battery
unit
battery cell
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
CN202111170121.7A
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Chinese (zh)
Inventor
W·张
O·米西尔
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.)
Volkswagen Automotive Co ltd
Original Assignee
Volkswagen Automotive Co ltd
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Filing date
Publication date
Application filed by Volkswagen Automotive Co ltd filed Critical Volkswagen Automotive Co ltd
Publication of CN114300798A publication Critical patent/CN114300798A/en
Pending legal-status Critical Current

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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
    • 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
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • 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
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
    • 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
    • H01M10/63—Control systems
    • H01M10/633—Control systems characterised by algorithms, flow charts, software details or the like
    • 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
    • H01M10/653—Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
    • 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
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • 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
    • H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
    • 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
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
    • 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
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4278—Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller
    • 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
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Automation & Control Theory (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Battery Mounting, Suspending (AREA)
  • Secondary Cells (AREA)

Abstract

The invention relates to a battery cell module housing (2) for accommodating a battery module (4), comprising: a battery cell module housing cover (6) for covering the battery module (4); a cell module housing bottom (8) arranged opposite the cell module housing cover (6) for receiving the battery module (4); a battery cell module housing peripheral portion (10) arranged between the battery cell module housing cover portion (6) and the battery cell module housing bottom portion (8), the battery cell module housing peripheral portion being for connecting the battery cell module housing cover portion (6) and the battery cell module housing bottom portion (8), wherein an air dehumidifying unit (12) is provided for dehumidifying air in the battery cell module housing (2).

Description

Battery cell module housing for receiving a battery module
Technical Field
The invention relates to a battery cell module housing for receiving a battery module, a battery system for use in a motor vehicle and a method for operating a battery system.
Background
With the increased acceptance of electric vehicles, the demand for safety of a battery cell (Batteriezellen) as an energy source for the electric vehicle has also increased. Here, a large risk arises from the lack of stability of the battery cell at higher temperatures. Although the safety of the battery cells has been significantly improved over the past years (for example by adding additives to the electrolyte or by using a solid electrolyte), so that the battery cells can in principle be operated stably up to temperatures of 200 ℃, it has hitherto not been possible to reliably prevent the melting or decomposition of the battery cell material and the leakage of the battery cell material out of the battery cell at lower temperatures of less than 200 ℃.
In the case of lithium ion cells, therefore, molten lithium metal leaks out of the cell housing, which is usually already at about 180 ℃, because the cell housing, which is usually designed as a pouch-shaped housing (Pouchgeh ä use), can become unsealed and can be opened at 180 ℃. The leaked liquid high-reactivity lithium metal not only causes corrosion of the metal part of the battery system, but also may cause external short, which may cause fire and explosion within the battery system.
Individual solutions are known from the prior art which at least partially solve the above-mentioned problems. Thus, DE10157272a1 proposes that, in the event of leakage of liquid lithium metal from the cell housing or in the event of ignition or explosion caused by leakage, the liquid lithium metal be absorbed directly via a suitable absorber in order to minimize the damage that occurs. Disadvantageously, damage to the entire battery module usually occurs despite the immediate absorption of liquid lithium metal, which thereby leads not only to the replacement of individual battery cells but also to the replacement of the entire module.
Disclosure of Invention
The object of the present invention is therefore to eliminate the disadvantages described above at least in part, and in particular to arrange the battery cells in a protected manner such that even in the event of a temperature-induced leakage of the battery cell material, damage to the entire battery module does not occur, but rather damage can be limited to the relevant leaking battery cells as far as possible.
The object is achieved by a battery cell module housing for accommodating a battery module, a battery system for use in a motor vehicle, and a method for operating a battery system. The technical features disclosed for the battery cell module housing according to the invention are also applicable here in connection with the battery system according to the invention or the method according to the invention and vice versa, so that the disclosure with respect to the individual inventive aspects can always be mutually referenced.
The battery cell module housing according to the invention for accommodating a battery module comprises a battery cell module housing cover for covering the battery module, a battery cell module housing bottom arranged opposite the battery cell module housing cover for accommodating the battery module, and a battery cell module housing peripheral portion (Zellgeh ä usemamtel) arranged between the battery cell module housing cover and the battery cell module housing bottom for connecting the battery cell module housing cover and the battery cell module housing bottom. Here, the battery cell module case according to the present invention is characterized in that an air dehumidifying unit for dehumidifying air in the battery cell module case is provided.
It is recognized within the scope of the present invention that if the moisture content of the environment surrounding the battery cell is minimized, the probability of a fire or explosion occurring when the battery cell material of the battery cell leaks can be extremely reduced. It is also recognized within the scope of the invention that a corresponding minimization of the moisture content of the environment surrounding the battery cells can be achieved particularly effectively by arranging an air dehumidifying unit.
A typical battery cell module housing is designed in particular for accommodating a battery module made of lithium-ion battery cells, as is nowadays provided for use in smartphones, laptops, electric vehicles or hybrid vehicles. It is also contemplated that a representative cell module housing may also be provided for housing a battery module constructed from zinc cells, aluminum cells, or metal oxide cells. In this case, the exemplary battery cell module housing can be used in particular in at least partially or fully electrically operated motor vehicles. Furthermore, it is also conceivable to use the battery cell module housing according to the invention in a crane, a ship, a flying object or a stationary object.
The typically provided components of the cell module housing can be releasably or non-releasably connected to one another and the cell module housing is sealed, in particular hermetically, in the connected state. For simple accessibility to the interior of the battery cell module housing, it can be particularly advantageous if at least the battery cell module housing cover is detachably connected to the remaining battery cell module housing, in particular to the battery cell module housing peripheral portion. The cell module housing cover can thereby preferably be simply opened or closed in order to gain access to the cell housing interior.
In particular, in the context of use in high-voltage applications, the cell module housing can be designed to accommodate a battery module consisting of a plurality of, preferably a plurality of, interconnected battery cells. An air dehumidifying unit provided according to the invention can typically preferably be understood as a device or means for receiving water in the air, which is in particular adjustably designed and can have, for example, drying means. The air dehumidifying unit can advantageously be arranged at least partially within the battery cell module housing, for example partially outside, preferably on and partially within the battery cell module housing, wherein the air dehumidifying unit can then be designed in multiple parts, for example, wherein the components arranged within the battery cell module housing can then advantageously be connected to the components arranged outside the battery cell module housing.
Within the scope of a compact arrangement and a structurally simple possibility of establishing a stationary air dehumidifying unit, it can be provided according to the invention in particular that the air dehumidifying unit is arranged at and/or in the cell module housing cover.
In addition, it can be provided with typical advantage, insofar as the most controllable adjustment of the air dehumidification unit is possible, that the air dehumidification unit is designed in the form of an electrically operated air dehumidifier.
In terms of a most user-friendly and comfortable operation of the air dehumidifying unit (which at the same time enables a most energy-saving operation), it is particularly conceivable that the air dehumidifying unit is activatable from a remote location. The air dehumidifying unit can be activated here, for example, by remote operation or in a simple manner from a vehicle or the like.
In order to ensure a reliable and at the same time energy-saving operation of the battery module, it can be provided according to the invention that the air dehumidifying unit is automatically activatable, wherein the automatic activation is preferably controlled by temperature and/or by the current air humidity. For temperature-controlled and/or air humidity-controlled regulation or activation, in particular, corresponding sensors, such as temperature sensors or air humidity sensors, may be arranged at and/or within the typical cell module housing. In this case, it can be provided, in particular, that the air dehumidification unit is already activated from a temperature of 100 ℃, preferably from a temperature of 90 ℃, in particular from a temperature of 80 ℃, when using the air humidity-controlled regulation or activation. It can also be arranged that the air dehumidification unit is at 15ppm H2Already activated at O-concentration, preferably from 10ppm of H2Already activated from the O-concentration, in particular from 5ppm of H2Already activated at the O-concentration. Alternatively or in addition to the temperature-controlled regulation or activation of the air dehumidification unit, a pressure-controlled regulation or the like may also be provided.
In order to minimize damage to the battery module when high temperatures are reached and to increase the safety of the battery module accordingly, according to the invention, a receiving unit can be provided in particular for receiving material escaping from the battery module, wherein the receiving unit is preferably arranged in the battery cell module housing, in particular at the bottom of the battery cell module housing.
In addition, with regard to a structure of the battery module which is as stable as possible, while at the same time ensuring a large absorption volume, it can be provided according to the invention that the receiving unit has a plurality of receiving channels arranged next to one another for receiving material which has leaked out of the battery module. The material regions arranged between the individual receiving channels contribute here in particular to the reinforcement of the battery module.
In order to further minimize damage to the battery module when high temperatures are reached and to correspondingly further increase the safety with respect to the battery module, it can be provided according to the invention that the receiving unit has a coating which is arranged at least partially on the surface of the receiving unit for reducing the reactivity of the material escaping from the battery module. The coating can in particular be made of a material which effectively reduces the reactivity of the material escaping from the cell, for example, a particulate brass and/or graphite and/or pyrene (Pyren) -powder, preferably a mixture of silicone (Silikon) and graphite and/or trimethoxyboroxine and/or Celogen, in particular a ternary eutectic salt mixture of BaCl, NaCl and KCl and/or a mixture of ternary eutectic salt and Celogen.
In order to minimize damage to the battery module even further when high temperatures are reached and to correspondingly increase the safety with respect to the battery module even further, it can be provided according to the invention that a cooling unit for cooling the receiving unit is provided, wherein the cooling unit is preferably arranged below the battery cell module housing bottom. The cooling unit can in particular be arranged directly below the bottom of the battery cell module housing and have as large a direct contact surface as possible with the receiving unit, so that the melted material that has leaked out of the battery cells can be cooled down as efficiently as possible. It may also be provided, for example, that the cooling unit is connected to the receiving unit via a heat-conducting layer. The cooling unit can be operated here with air or water as coolant. Other coolants, such as oil, glycol, water-glycol mixtures or other alcohols, can also be used. Furthermore, when using a typical battery cell module housing in a motor vehicle, it may be provided that the cooling circuit of the cooling unit is coupled to the cooling circuit of the vehicle.
Furthermore, the subject of the invention is also a battery system for use in a motor vehicle. The battery system comprises a battery module having a plurality of interconnected battery cells and a battery cell module housing for receiving the battery module, in particular the battery cell module housing described above, wherein the battery cell module housing has an air dehumidification unit for dehumidifying air in the battery cell module housing. The battery system according to the invention thus has the same advantages as it has been described in detail with respect to the battery cell module housing according to the invention.
The subject matter of the invention is also a motor vehicle comprising the battery cell module housing according to the invention described above, in particular comprising the battery system according to the invention described above.
In addition, in order to ensure a reliable and at the same time energy-saving operation of the battery module and to enable an automatic activation of the exemplary air dehumidifying unit, it can be provided according to the invention that a detection unit for acquiring data for determining the activation time of the air dehumidifying unit and/or a processing unit for determining the activation time of the air dehumidifying unit on the basis of the acquired data and/or a control unit for activating the air dehumidifying unit on the basis of the determined activation time are provided. The detection unit may preferably comprise a plurality of sensors for acquiring data for determining the activation time, which sensors may be configured, for example, as temperature sensors and/or air humidity sensors and/or pressure sensors, etc. An activation time for activating the air dehumidifying unit can then be determined by means of the processing unit on the basis of the acquired data in such a way that the activation of the air dehumidifying unit can be carried out by means of the control unit. In this case, the acquired data can be processed, preferably averaged, weighted or otherwise processed again, for example, in order to increase the data persuasion when the different data combinations are acquired, by the processing unit.
The subject matter of the invention is also a method for operating a battery system, in particular the above-described battery system. Here, a representative method includes the steps of: acquiring data for determining the activation time of an air dehumidifying unit of the battery system by means of a detection unit; determining, by means of a processing unit, an activation instant of an air dehumidifying unit of the battery system based on the acquired data; and activating the air dehumidifying unit by means of the control unit based on the determined activation moment. The method according to the invention thus has the same advantages as already described in detail with regard to the battery system according to the invention or the battery cell module housing according to the invention.
Drawings
Further advantages, features and details of the invention emerge from the following description, in which embodiments of the invention are described in detail with reference to the drawings. The features mentioned in the claims and in the description may be essential for the invention in each case individually or in any combination.
In the drawings:
fig. 1 shows a schematic view of a battery cell module housing according to the invention in a perspective view according to a first embodiment;
fig. 2 shows a schematic view of a part of a battery cell module housing according to the invention in a top view according to a first embodiment;
fig. 3 shows a schematic view of a battery system according to the invention in a cross-sectional view according to a first embodiment;
fig. 4a shows a schematic diagram of a battery system according to the invention in a cross-sectional view according to a second embodiment;
fig. 4b shows a schematic diagram of a battery system according to the invention in a cross-sectional view according to a third embodiment;
fig. 5 shows a schematic representation of a method for operating a battery system according to the invention.
Detailed Description
Fig. 1 shows a schematic illustration of a battery cell module housing 2 according to the invention in a perspective view according to a first embodiment.
The cell module housing 2 according to the invention for accommodating the battery module 4 comprises a cell module housing cover 6 for covering the battery module 4, a cell module housing base 8 arranged opposite the cell module housing cover 6 for accommodating the battery module 4, and a cell module housing peripheral portion 10 arranged between the cell module housing cover 6 and the cell module housing base 8 for connecting the cell module housing cover 6 and the cell module housing base 8. Furthermore, the battery cell module housing 2 according to the invention according to fig. 1 comprises an air dehumidification unit 12 for dehumidifying the air in the battery cell module housing 2, which is currently arranged below the battery cell module housing cover 6 and is therefore shown in dashed line form.
Fig. 2 shows a schematic representation of a part of a battery cell module housing 2 according to the invention in a top view according to a first embodiment.
Fig. 2 shows a battery cell module housing cover 6, on which an air dehumidification unit 12 is arranged, which is currently used to dehumidify the air in the battery cell module housing 2.
Likewise, the air dehumidifying unit 12 may also be arranged within the battery cell module housing cover 6.
Furthermore, the air dehumidification unit 12 can be designed, in particular, as an electrically operated air dehumidifier, within the scope of a regulation which is as controllable as possible.
Furthermore, the air dehumidification unit 12 may preferably be remotely activatable in terms of a user-friendly and comfortable operation of the air dehumidification unit 12 as possible, which at the same time enables an operation as energy-saving as possible.
It is likewise conceivable that the air dehumidifying unit 12 is automatically activatable, wherein it may preferably be activated automatically under temperature control and/or depending on the current air humidity.
Fig. 3 shows a schematic illustration of a battery system 1 according to the invention in a cross-sectional view according to a first embodiment.
Here, the battery system 1 according to the present invention includes: a battery module 4 having a plurality of battery cells connected to each other; and a cell module housing 2 for accommodating a battery module 4, which has a cell module housing cover 6 for covering the battery module 4, a cell module housing base 8 arranged opposite the cell module housing cover 6 for accommodating the battery module 4, and a cell module housing peripheral portion 10 arranged between the cell module housing cover 6 and the cell module housing base 8 for connecting the cell module housing cover 6 and the cell module housing base 8. Furthermore, the cell module housing 2 of the battery system 1 has an air dehumidification unit 12 arranged below the cell module housing cover 6 for dehumidifying the air in the cell module housing 2 and a receiving unit 14 for receiving material escaping from the battery module 4, which is currently arranged within the cell module housing 2 at the cell module housing bottom 8.
Fig. 4a shows a schematic illustration of a battery system 1 according to the invention according to a second embodiment in a sectional view.
According to this second embodiment, the battery cell module housing 2 of the battery system 1 comprises a receiving unit 14 with a plurality of receiving channels 16 arranged side by side for receiving material escaping from the battery modules 4. Furthermore, the battery cell module housing 2 according to the second embodiment comprises a cooling unit 18 for cooling the receiving unit 14 and a heat conductive layer 28 arranged between the cooling unit 18 and the receiving unit 14.
Furthermore, the battery system 1 comprises a detection unit 20 for acquiring data for determining the activation moment of the air dehumidifying unit 12, a processing unit 22 for determining the activation moment of the air dehumidifying unit 12 based on the acquired data, and a control unit 24 for activating the air dehumidifying unit 12 based on the determined activation moment. Furthermore, a plurality of sensors 26 are provided for acquiring data for determining the activation times, which sensors are currently connected wirelessly to the detection unit 20.
Fig. 4b shows a schematic diagram in cross section illustrating a battery system 1 according to the invention according to a third embodiment.
According to this third embodiment, the receiving unit 14 has a coating arranged at least partially on the surface of the receiving unit 14, which coating serves to reduce the reactivity of the material escaping from the battery module 4. In this case, the coating can be composed in particular of a material which effectively reduces the reactivity of the material escaping from the cell, for example, particulate brass and/or graphite and/or pyrene powder, preferably a mixture of silicone and graphite and/or trimethoxyboroxine and/or Celogen, in particular a ternary eutectic salt mixture of BaCl, NaCl and KCl and/or a mixture of ternary eutectic salts and Celogen.
Fig. 5 shows a schematic representation of a method according to the invention for operating the battery system 1.
Here, the method comprises the steps of: data for determining the activation time of the air dehumidifying unit 12 of the battery system 1 are acquired 30 by means of the detection unit 20, the activation time of the air dehumidifying unit 12 of the battery system 1 is determined 32 by means of the processing unit 22 on the basis of the acquired data, and the air dehumidifying unit 12 is activated 34 by means of the control unit 24 on the basis of the determined activation time.
By means of the battery cell module housing 2 according to the invention, the battery system 1 according to the invention and the method according to the invention for operating the battery system 1, in particular by means of the arrangement of the air dehumidifying unit 12 provided according to the invention, it is possible to: the probability of a fire or explosion occurring when the cell material of the battery cell leaks is drastically reduced by minimizing the water content of the environment around the battery cell by means of the air dehumidifying unit 12.
List of reference numerals
1 Battery system
2 Battery monomer module casing
4 cell module
6 battery monomer module casing lid
8 battery monomer module casing bottom
10 battery cell module case circumference
12 air dehumidification unit
14 receiving unit
16 receiving channel
18 cooling unit
20 detection unit
22 processing unit
24 control unit
26 sensor
28 Heat conducting layer
30 acquiring data for determining the moment of activation
32 determining the activation moment
34 activate the air dehumidifying unit.

Claims (11)

1. A battery cell module housing (2) for accommodating a battery module (4), the battery cell module housing comprising:
-a battery cell module housing cover part (6) for covering the battery module (4);
-a cell module housing bottom (8) arranged opposite the cell module housing cover (6) for accommodating the battery module (4);
-a cell module housing peripheral portion (10) arranged between the cell module housing cover portion (6) and the cell module housing bottom portion (8) for connecting the cell module housing cover portion (6) and the cell module housing bottom portion (8),
it is characterized in that the preparation method is characterized in that,
an air dehumidification unit (12) is provided for dehumidifying the air in the cell module housing (2).
2. The battery cell module housing (2) according to claim 1, characterized in that the air dehumidifying unit (12) is arranged at and/or within the battery cell module housing cover (6), wherein the air dehumidifying unit (12) is constructed in the form of an electrically operated air dehumidifier.
3. The battery cell module housing (2) according to claim 1 or 2, characterized in that the air dehumidifying unit (12) is remotely activatable.
4. Battery cell module housing (2) according to one of the preceding claims, characterized in that the air dehumidifying unit (12) is automatically activatable, wherein the automatic activation takes place under temperature control and/or under control depending on the current air humidity.
5. The battery cell module housing (2) according to one of the preceding claims, characterized in that a receiving unit (14) for receiving material escaping from the battery module (4) is provided, wherein the receiving unit (14) is arranged within the battery cell module housing (2) at the battery cell module housing bottom (8).
6. The battery cell module housing (2) according to one of the preceding claims, characterized in that the receiving unit (14) has a plurality of receiving channels (16) arranged side by side for receiving material escaping from the battery module (4).
7. The battery cell module housing (2) according to one of the preceding claims, characterized in that the receiving unit (14) has a coating arranged at least partially on the surface of the receiving unit (14) for reducing the reactivity of the material escaping from the battery module (4).
8. Battery cell module housing (2) according to one of the preceding claims, characterized in that a cooling unit (18) for cooling the receiving unit (14) is provided, wherein the cooling unit (18) is arranged below the battery cell module housing bottom (8).
9. Battery system (1) for use in a motor vehicle, comprising:
-a battery module (4) having a plurality of interconnected battery cells;
-a battery cell module housing (2) for accommodating the battery module (4), in particular a battery cell module housing (2) according to any one of the preceding claims,
it is characterized in that the preparation method is characterized in that,
the battery cell module housing (2) has an air dehumidification unit (12) for dehumidifying air in the battery cell module housing (2).
10. Battery system (1) according to one of the preceding claims, characterized in that a detection unit (20) for acquiring data for determining the activation moment of the air dehumidification unit (12) and/or a processing unit (22) for determining the activation moment of the air dehumidification unit (12) on the basis of the acquired data and/or a control unit (24) for activating the air dehumidification unit (12) on the basis of the determined activation moment are provided.
11. Method for operating a battery system (1), in particular a battery system (1) according to one of the preceding claims, comprising the steps of:
-acquiring (30), by means of a detection unit (20), data for determining the moment of activation of an air dehumidification unit (12) of the battery system (1);
-determining (32), by means of a processing unit (20), an activation instant of an air dehumidification unit (12) of the battery system (1) based on the acquired data;
-activating (34) the air dehumidifying unit (12) by means of a control unit (24) based on the determined activation moment.
CN202111170121.7A 2020-10-07 2021-10-08 Battery cell module housing for receiving a battery module Pending CN114300798A (en)

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CN105531840A (en) * 2013-09-18 2016-04-27 罗伯特·博世有限公司 Device and method for drying a battery housing
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