EP3844822A1 - Batteriesystem mit lüftern im batteriezellenhalter und verfahren zur homogenen temperaturverteilung innerhalb des batteriesystems - Google Patents
Batteriesystem mit lüftern im batteriezellenhalter und verfahren zur homogenen temperaturverteilung innerhalb des batteriesystemsInfo
- Publication number
- EP3844822A1 EP3844822A1 EP19750071.3A EP19750071A EP3844822A1 EP 3844822 A1 EP3844822 A1 EP 3844822A1 EP 19750071 A EP19750071 A EP 19750071A EP 3844822 A1 EP3844822 A1 EP 3844822A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- battery
- fan
- battery cell
- cell holder
- cells
- 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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/617—Types of temperature control for achieving uniformity or desired distribution of temperature
-
- 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
-
- 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
- H01M10/6561—Gases
- H01M10/6563—Gases with forced flow, e.g. by blowers
-
- 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
- H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
- H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
- H01M50/222—Inorganic material
- H01M50/224—Metals
-
- 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 invention relates to a battery system with fans within one
- Battery cell holder and a method for homogeneous temperature distribution within the battery system.
- the individual battery cells may therefore discharge this particular temperature in order to ensure the safety of the battery. If the certain temperature is reached by a battery cell during the discharge process, the discharge current of the battery is throttled. If the battery is in charging mode, the charging process is only started if the current temperature of the battery cells is below the specified temperature.
- the battery management system throttles the performance of the entire battery as soon as a battery cell is in the critical temperature range.
- the disadvantage here is that the battery power is reduced early.
- the operating temperature also plays an important role in the life of a battery cell.
- the aging of a battery cell occurs at high
- the document US 2013149583 A1 discloses a battery system with a plurality of electrical cells, a battery housing and a fan.
- a region of the battery housing, which is arranged below the battery cells, comprises an inlet opening for air.
- the side walls and an area of the battery housing above the battery cells have outlet openings for the air.
- Air outlet openings must be inserted into the battery case. Another disadvantage is that the battery case will leak.
- the object of the invention is to overcome these disadvantages.
- a battery system comprises a battery housing with a base body, a first cover element and a second cover element. The first
- Cover element closes a first open end face of the base body and the second cover element closes a second open end face of the
- the battery housing is hermetically sealed from the environment.
- the battery system includes one
- Battery cell holder having battery cell receiving spaces for a plurality of battery cells, the battery cell holder having the plurality of
- the battery housing is arranged.
- the battery system includes one
- the battery cell holder has at least one first fan receiving space with a first fan and at least one second fan receiving space with a second fan, the first fan and the second fan having different flow directions.
- the first fan and the second fan are dependent on one
- Temperature redistribution takes place within the closed battery housing by a circulating air movement in the battery or the
- the advantage here is that the waste heat generated by the operation of the battery cells is homogeneously redistributed within the battery and the homogeneously distributed heat is released to the environment through the surface of the housing, so that the individual battery cells age evenly and the battery power is only throttled after a longer operating time .
- an improved temperature distribution or rapid cooling of the battery leads to the battery quickly entering a charge-capable state.
- Battery cell holder are arranged.
- Cover element and the second fan arranged in the vicinity of the second cover element.
- the air circulation within the battery housing takes place from the front cover area, which has a high temperature, to the rear area of the battery housing, which has cooler temperatures, and as a result, the hot air is redistributed from front to back inside the battery housing. This means that the warm air can circulate well within the battery housing.
- the first fan and the second fan are each an axial fan.
- the battery cell receiving spaces and the at least one first fan receiving space and the at least one second fan receiving space have the same dimensions.
- the advantage here is that the battery cell holder for the fans does not have to be changed.
- the second cover element has at least one further fan.
- the at least one further fan is arranged on the second cover element within the battery housing. The advantage here is that the at least one additional fan is limited only by the size of the second cover element. Large volume flows can therefore be generated.
- the battery housing is manufactured in a simple and inexpensive manner.
- the battery housing comprises metal
- Battery housing quickly through the thermally conductive surface of the body to the outside, d. H. outside the battery housing, can be dissipated.
- the method according to the invention for homogeneous temperature distribution within a battery system having a battery housing, a battery cell holder with battery cell receiving spaces for a plurality of battery cells and a battery management system which is set up to monitor the plurality of battery cells and to record temperatures of the individual battery cells, and the like
- Battery cell holder has at least one first fan receiving space with a first fan and at least one second fan receiving space with a second fan, that the first fan and the second fan in dependence on a
- Threshold exceeding of the temperature of the individual battery cells can be controlled by the battery management system.
- the use of the battery system according to the invention takes place in an electric vehicle, in particular an electrically operated two-wheeler.
- vehicle according to the invention in particular an electrically operated two-wheeler, has the battery system according to the invention.
- Figure 1 is a plan view of a temperature distribution
- Figure 2 shows a first embodiment of a battery system
- Figure 3 shows a second embodiment of a battery system with six
- Figure 4 shows a method for homogeneous temperature distribution within a battery system with at least two fans.
- FIG. 1 shows a top view of an exemplary temperature distribution of a 48 V battery system 100 with a plurality of battery cells 105.
- the battery system comprises thirteen rows of fifteen battery cells 105 each connected in parallel, which form a battery cell group.
- Each battery cell 105 supplies a voltage of approximately 3.6 V, so that the battery can supply a total voltage of 48 V. Due to the dense arrangement of the battery cells 105, different results result from the waste heat emitted by the individual battery cells during operation of the battery system 100
- Temperature ranges within the battery housing not shown in Figure 1. Exemplary in FIG. 1 are first temperature ranges 120 and a second
- Temperature range 121 a third temperature range 122 and fourth
- the first temperature ranges 120 have a lower temperature than the second temperature range 121 and the third temperature range 122.
- the fourth temperature ranges 123 are the coldest. The reason for this is that the battery cells 105, which are arranged at the edge of the battery cell assembly, transfer the waste heat faster to the
- Battery housings can deliver than the battery cells 105, which are arranged inside the battery cell assembly.
- the battery management system 109 additionally functions as a heat source.
- FIG. 2 shows a battery system 200 with a battery housing, which has a base body 201, a first cover element 202 and a second cover element
- the first cover element 202 closes a first open one
- Front side of the base body 201 and includes one not shown here
- the second cover element 203 closes a second open end face of the base body 201.
- the battery housing thus forms a closed space which serves as a receiving space for a battery cell holder
- the battery housing is thus sealed from the environment or sealed airtight.
- the battery cell holder 204 does not completely fill the receiving space of the battery housing. This means that the battery housing and the battery cell holder 204 are spaced apart from one another parallel to the end faces. In other words, they are located above and below the one housed in the battery housing
- Battery cell holder empty gaps or voids.
- Battery cell holder 204 has battery cell accommodation spaces for a multiplicity of battery cells 205, a multiplicity of battery cells 205 in FIGS
- Battery cell receiving rooms are arranged.
- the battery cell holder 204 has at least one first fan receiving space for first fans 206 and at least one second fan receiving space for second fans 207.
- the first fan 206 is arranged inside the first fan receiving space and the second fan 207 is arranged inside the second fan receiving space.
- the first fan 206 and the second fan 207 are, for example, axial fans.
- the first fan 206 and the second fan 207 have different ones Flow directions so that the warmth or warm air through the
- Battery cell holder 204 can circulate. Circulation of the warm air is thus made possible by the fact that the air flows from top to bottom and back mainly through the fans themselves through the battery cell holder 204. In addition, the circulation can be supported by the fact that between the first cover element 202 and the battery cell holder 204, as well as between the battery cell holder 204 and the second cover element 203, there are spaces for the air circulation through damping materials arranged at this point. Thus, the circulating air movement within the
- the air flow is a pure one
- Battery cell receiving areas no battery cells are inserted. These are, for example, battery cell receiving spaces that are spatially close to the first fan 206 and the second fan 207.
- the battery cell holder can have air channels which are arranged between the individual battery cells 205 in the battery cell holder 204, so that an optimal flow around the individual
- Battery cells 205 takes place. These air channels can also only be present at the locations of the battery cell holder 204 at which the operating temperature of the battery cells 205 is very high, for example in the third temperature range 122 shown in FIG. 1. Alternatively or additionally, a further fan can be arranged on the second cover element 203 .
- the arrows in FIG. 2 show the circulation within the battery housing through the battery cell holder 204 and along the base body 201.
- the temperatures within the battery housing are recorded, for example, by means of NTCs at various points in the battery cell network.
- the first fan 206 and the second fan 207 are thereby Battery management system 209 depending on one
- FIG. 3 shows a second exemplary embodiment of a battery system 300.
- the structure of the battery system 300 is similar to the structure of the battery system 200 from FIG. 2. Components with the same function from FIG. 3 have the same two rear positions of the reference symbols as the reference symbols from FIG. 2.
- the battery system 300 also shows a battery cell holder 304
- FIG. 3 shows six fans, the first fans 306, 308 and 309 and the second fans 307, 310 and 311 a different one
- the battery cell receiving spaces, the first fan receiving spaces and the second fan receiving spaces have the same dimensions.
- fans are arranged at some points on the battery cell holder.
- This structure means that the volume flows of the warm air are low and the dimensions of the fans are comparable to the size of a battery cell 305.
- a plurality of battery cell receiving areas are therefore preferably left free, i. H.
- first fans 306, 308 and 309 and second fans 307, 310 and 311 are used.
- a first fan 306, 308 and 309 and a second fan 307, 310 and 311 are arranged in pairs along the base body at a distance within a battery cell series circuit, the first fan preferably being in the vicinity of the first
- a first fan 306, 308 and 309 and a second fan 307, 310 and 311 are arranged in different battery cell series connections in a further exemplary embodiment. As a result, only one battery cell 305 is removed per parallel row.
- the base body 201 and 301 of the battery housing is designed in one piece and tubular and has a metal.
- the metal can comprise aluminum or manganese, for example.
- the base body 201 and 301 can be manufactured using a continuous casting process.
- the invention can also be used at the module level, the
- Battery cells are to be replaced by battery modules.
- the fan is arranged within the individual battery modules, each of which has its own housing.
- Battery pack level which homogenizes the temperature of the individual battery modules. In this case, the battery cell holder must go through a
- Receiving element for battery modules to be replaced or designed such that it can accommodate battery modules.
- the battery system is used, for example, in an electrically operated two-wheeler. Furthermore, the battery system can also be used in stationary devices, e.g. B. in house buffers.
- FIG. 4 shows a method 400 for homogeneous temperature distribution within a battery system with at least one first fan and at least one second fans, which are arranged within the battery cell holder instead of battery cells.
- the method 400 starts with step 410, in which the battery management system temperatures between the individual
- the determined threshold value is, for example, a maximum permissible operating temperature or
- Battery management system for the current operating state of the battery, i.e. Loading or unloading.
- the specific threshold value for the charging process is 40 ° C and the specific threshold value for the unloading process is approximately 60 ° C. If the determined threshold value is reached, the following fan 440 controls the first fan and the second fan with different flow directions. If this is not the case, the method continues with step 410.
- step 430 the area of the battery cell network affected by the temperature threshold exceeding is determined in a step 430 which follows the step 420.
- step 440 all fans are actuated that are closest to this affected area or that can redistribute the waste heat as quickly as possible.
- fans are operated simultaneously in both the hotter and the colder areas, so that a high temperature gradient is created, which leads to rapid cooling or homogenization of the temperature distribution within the battery system.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Inorganic Chemistry (AREA)
- Secondary Cells (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102018214748.5A DE102018214748A1 (de) | 2018-08-30 | 2018-08-30 | Batteriesystem mit Lüftern im Batteriezellenhalter und Verfahren zur homogenen Temperaturverteilung innerhalb des Batteriesystems |
| PCT/EP2019/069791 WO2020043396A1 (de) | 2018-08-30 | 2019-07-23 | Batteriesystem mit lüftern im batteriezellenhalter und verfahren zur homogenen temperaturverteilung innerhalb des batteriesystems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3844822A1 true EP3844822A1 (de) | 2021-07-07 |
Family
ID=67551339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19750071.3A Pending EP3844822A1 (de) | 2018-08-30 | 2019-07-23 | Batteriesystem mit lüftern im batteriezellenhalter und verfahren zur homogenen temperaturverteilung innerhalb des batteriesystems |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3844822A1 (de) |
| DE (1) | DE102018214748A1 (de) |
| WO (1) | WO2020043396A1 (de) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2838869B1 (fr) | 2002-04-23 | 2004-11-19 | Cit Alcatel | Generateur electrochimique a surface de revolution |
| JP5436924B2 (ja) * | 2009-05-08 | 2014-03-05 | 三洋電機株式会社 | バッテリシステム |
| JP4918611B1 (ja) | 2010-11-09 | 2012-04-18 | 三菱重工業株式会社 | 電池システム |
| KR101877996B1 (ko) * | 2012-09-07 | 2018-07-16 | 현대자동차주식회사 | 배터리 시스템 |
-
2018
- 2018-08-30 DE DE102018214748.5A patent/DE102018214748A1/de active Pending
-
2019
- 2019-07-23 WO PCT/EP2019/069791 patent/WO2020043396A1/de not_active Ceased
- 2019-07-23 EP EP19750071.3A patent/EP3844822A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020043396A1 (de) | 2020-03-05 |
| DE102018214748A1 (de) | 2020-03-05 |
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