CN114447469A - Assembly of battery module casing and battery module - Google Patents

Assembly of battery module casing and battery module Download PDF

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Publication number
CN114447469A
CN114447469A CN202111252704.4A CN202111252704A CN114447469A CN 114447469 A CN114447469 A CN 114447469A CN 202111252704 A CN202111252704 A CN 202111252704A CN 114447469 A CN114447469 A CN 114447469A
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CN
China
Prior art keywords
battery module
region
cooling fluid
cooling
module housing
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Pending
Application number
CN202111252704.4A
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Chinese (zh)
Inventor
吉多·霍夫尔
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Lisa Draexlmaier GmbH
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Lisa Draexlmaier GmbH
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Publication of CN114447469A publication Critical patent/CN114447469A/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
    • 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
    • H01M50/211—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for pouch 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
    • H01M10/61—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
    • H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
    • H01M10/647—Prismatic or flat cells, e.g. pouch 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
    • H01M10/654—Means for temperature control structurally associated with the cells located inside the innermost case of the cells, e.g. mandrels, electrodes or electrolytes
    • 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
    • H01M10/6553—Terminals or leads
    • 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
    • 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
    • H01M50/258—Modular batteries; Casings provided with means for assembling
    • 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
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • 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
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • 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
    • H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
    • H01M50/264—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks for cells or batteries, e.g. straps, tie rods or peripheral frames
    • 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

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Secondary Cells (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

A battery module housing 100 for a battery module 140, 150, 160, 170 with at least one pouch cell 105 with a first connecting tab 1051 and a second connecting tab 1052, the battery module housing comprising: a first region 101 and a second region 102, which are designed for a cooling fluid to flow from the first region 101 to the second region 102, wherein the first region 101 and the second region 102 are arranged such that the first connecting piece 1051 can be arranged in the first region 101 and the second connecting piece 1052 can be arranged in the second region 102, thereby ensuring a direct cooling of these connecting pieces 1051, 1052 by the cooling fluid and a direct cooling of at least one side of the soft pack cell 105.

Description

Assembly of battery module casing and battery module
Technical Field
The invention relates to a battery module housing for a battery module having at least one pouch cell. The invention also relates to an assembly of battery modules.
Background
The battery module includes a battery module case and battery cells, which are housed in the battery module case. As the battery cell, for example, a pouch cell can be used. Soft pack cells are a widely used form of construction for lithium ion batteries, which represents a flat structure of cells that may have different cell chemistries. A plurality of battery modules may be joined into one battery. The electric energy required for driving the electric motor, for example, is supplied by the battery. The battery cell inside the battery becomes hot due to the use of the supplied energy of the battery cell. As the cells become hot, the cells lose effectiveness over their lifetime and the cells overheat.
DE 102015107170 a1 relates to a cooling plate for a vehicle battery pack, which cooling plate can be flowed through by fluid. The cooling plate has a bottom plate and a top plate arranged spaced apart from each other and joined by an adhesive connection. At least one cooling channel is provided between the base plate and the top plate spaced apart therefrom, through which cooling channel a fluid can flow. However, when cooling the battery cells, in particular the pouch cells, only the side of the battery cells which is in thermal contact with the cooling plate is cooled by the cooling plate. Due to the shape of the soft-packing cell, the surface to be cooled cannot be precisely defined, since the soft-packing cell expands during its service life. This creates a large gap between the surface to be cooled and the cooling plate. This void makes cooling of the soft pack cell difficult.
Disclosure of Invention
The object of the invention is therefore to propose an improved cooling of the soft pack cells.
This object is achieved by the subject matter of the independent claims. Advantageous developments of the invention are given in the dependent claims, the description and the drawings.
One aspect of the invention relates to a battery module housing for a battery module with at least one pouch cell with a first connecting tab and a second connecting tab, comprising a first region and a second region which are designed for the flow of a cooling fluid from the first region to the second region, wherein the first region and the second region are arranged such that the first connecting tab can be arranged in the first region and the second connecting tab can be arranged in the second region, thereby ensuring a direct cooling of the connecting tabs and a direct cooling of at least one side of the pouch cell with the cooling fluid.
The battery module housing can be, for example, a hollow aluminum profile into which a soft pack cell can be inserted. The insertion of the pouch cells into the battery module housing can be automated. For example, the pouch cells may be compressed in the battery module housing. Die-cast covers, which include connections for cooling fluid and include electrical connections, may be welded to the battery module housing. The battery modules can be joined to form a battery, in particular a vehicle battery. The first connection means for the cooling fluid may be arranged in the first region. The cooling fluid can be introduced into the first region by means of the first connecting device. A second connection device is arranged in the second region, which second connection device is designed for letting the cooling fluid out of the second region. The cooling fluid can thereby flow from the first zone to the second zone. The pouch cells are appropriately inserted into the battery module housing such that the first connecting tabs are arranged in the first region. The second connecting piece is arranged in the second region. The first connection piece may be directly cooled by circulating an inflow cooling fluid around the first connection piece, and the second connection piece may be directly cooled by circulating the inflow cooling fluid around the second connection piece. The soft-packed cell may comprise two planar sides which are welded to each other to form a pouch. The weld seam of the planar side is arranged in a region which forms the narrow side of the soft pack cell. In addition to the first connecting webs and the second connecting webs, the narrow sides of the soft pack cell are also directly cooled when the cooling fluid flows from the first region into the second region, since the cooling fluid flows through the narrow sides of the soft pack cell.
The first connecting sheet and the second connecting sheet are used for jointing the soft package single cell. For example, the first connecting piece and the second connecting piece may be connected to the busbar, respectively. A plurality of pouch cells may be loaded into the battery module housing.
For example, further electronic components can be provided in the first region and the second region, which can additionally be cooled with a cooling fluid.
The cooling fluid is electrically insulating. The cooling fluid may be, for example, cooling oil.
In one embodiment, the cooling fluid inlet comprises a fluid distributor which is designed to distribute the cooling fluid in the battery module housing during the inflow of the cooling fluid. The cooling fluid outlet comprises a further fluid distributor which is designed to let the cooling fluid flowing distributively into the battery module housing flow jointly out of the cooling fluid outlet. For example, the fluid distributor may be an ejector that distributes the cooling fluid during the inflow of the cooling fluid into the battery module housing. The fluid distributor may include a plurality of openings through which the cooling fluid may flow into the battery module housing. This makes it possible to cause the cooling fluid to flow into the battery module housing at different points, so that the fluid is better distributed in the battery module housing and an improved cooling effect results.
In one embodiment, the battery module housing includes a plurality of cooling fluid inlets and a plurality of cooling fluid outlets.
In one embodiment, the battery module housing comprises a connecting member for connecting the electronics with the battery module housing. These connecting elements can be arranged, for example, on a die-cast cover of the battery module housing. For example, electronics for monitoring the temperature of the pouch cells can be connected to the battery module housing. The electronics can be responsible for cell balancing of the soft pack cell and detect measurement values such as temperature. These measured values can be transmitted to a higher-level battery management system which analyzes the measured values.
In one embodiment, the battery module housing comprises a clamping frame, by means of which at least one pouch cell can be fixed in the battery module housing. The individual battery cells are clamped and fixed into the battery module housing by means of the clamping frame. The clamping frame may comprise springs, by means of which the clamping frame may clamp the individual battery cells in the battery module housing. By means of the clamping frame, no additional fastening means for fastening the pouch cells in the battery module housing are required.
In one embodiment, the pouch cells may also be held in the battery module housing by the walls of the battery module housing without the need for a clamping frame.
In one embodiment, the battery module housing may include an interface for mechanically connecting a plurality of battery module housings. The interface may be, for example, a screw hole arranged on the battery module housing.
Another aspect of the invention relates to an assembly of battery modules, comprising a first battery module with a battery module housing into which at least one pouch cell with a first connecting tab and a second connecting tab is inserted, the battery module housing having a first region and a second region which are designed for a cooling fluid to flow from the first region to the second region, wherein the first region and the second region are arranged such that the first connecting tab is arranged in the first region and the second connecting tab is arranged in the second region, whereby the connecting tabs are directly cooled by the cooling fluid and at least one side of the pouch cell is directly cooled.
Furthermore, the assembly of battery modules comprises a second battery module with a battery module housing into which at least one pouch cell with a first connecting tab and a second connecting tab is inserted, with a first region and a second region which are designed to allow a cooling fluid to flow from the first region to the second region, wherein the first region and the second region are arranged such that the first connecting tab is arranged in the first region and the second connecting tab is arranged in the second region, as a result of which a direct cooling of the connecting tabs and a direct cooling of at least one side of the pouch cell take place by means of the cooling fluid, wherein the first region of the first battery module is connected to the first region of the second battery module and the second region of the first battery module is connected to the second region of the second battery module, wherein the cooling fluid flows from the first region of the first battery module into the first region of the second battery module, so that it is possible to achieve the effect that the cooling fluid flows into the first battery module and the second battery module, and the cooling fluid flowing in from the first region of the first battery module flows out from the second region of the first battery module, and the cooling fluid flowing in from the first region of the second battery module flows out from the second region of the second battery module.
For example, the first battery module and the second battery module may be stacked one on another. The first battery module comprises a cooling fluid connection, which can be connected to a cooling fluid reservoir, for example. The first region of the first battery module is fluidly connected with the first region of the second battery module, so that a portion of the cooling fluid flowing into the first region of the first battery module may flow into the first region of the second battery module. The connection of the first region of the first battery module to the first region of the second battery module can be performed, for example, by a connecting device. The connecting means can be, for example, cooling channels which connect a first region of a first battery module to a first region of a second battery module, so that a cooling fluid can be introduced from the first region of the first battery module into the first region of the second battery module. A part of the cooling fluid flowing into the first region of the first battery module flows into the region of the pouch cell incorporated in the first battery module, so that at least one side of the tab of the pouch cell and the pouch cell is directly cooled. The remaining portion of the cooling fluid that flows in flows from the first region of the first battery module into the first region of the second battery module.
In one embodiment, the first battery module includes a first cooling fluid channel and the second battery module includes a second cooling fluid channel. The first cooling fluid passage and the second cooling fluid passage are coupled to each other, and a volume of the first cooling fluid passage is larger than a volume of the second cooling fluid passage. The cooling fluid can flow, for example, into the first region of the first battery module via the first cooling fluid inlet. The cooling fluid required for the first battery module is then introduced into the first battery module, wherein the remaining cooling fluid flows into the first region of the second battery module via a second cooling channel coupled to the first cooling channel and via a second cooling fluid inlet. This makes it possible to produce an effective throughflow of cooling fluid.
In one embodiment, the first connecting tab of the pouch cell of the first battery module is in electrical contact with the positive electrode of the first battery module, and the second connecting tab of the pouch cell of the first battery module is in electrical contact with the busbar of the first battery module. In this embodiment, the first connecting tab of the pouch cell of the first battery module forms the positive electrode of the first battery module. In another embodiment, all of the first connecting tabs of the pouch cells located in the battery module form the positive electrode of the first battery module. In this embodiment, the second tab of the pouch cell of the first battery module is in electrical contact with the busbar of the first battery module. In another embodiment, the second tabs of the pouch cells in the battery module are in electrical contact with the bus bars of the first battery module. For example, the first battery module and the second battery module are connected to each other by a bus bar.
Drawings
The invention is described below with reference to the figures and examples.
Fig. 1 shows a battery module housing according to an embodiment in a perspective view;
fig. 2 shows a battery module housing according to this embodiment in a top view;
fig. 3 shows a battery module according to another embodiment in a sectional view;
fig. 4 illustrates the battery module according to another embodiment in a sectional view;
fig. 5 shows an assembly of a battery module according to another embodiment in a sectional view.
The figures are only schematic representations for the purpose of illustrating the invention. Identical or identically functioning parts are uniformly denoted with the same reference numerals.
Detailed Description
Fig. 1 shows a battery module housing 100 according to an embodiment in a perspective view. According to this embodiment, the battery module case 100 includes the aluminum profiles 100 b. Die-cast covers 100a, 100c are welded to the aluminium profile 100b, which cover comprises a cooling fluid inlet 103 and a cooling fluid outlet 104 and a busbar connection 120. In another embodiment, the die-cast covers 100a, 100c are screwed to the battery module housing 100 and sealed with a seal if necessary.
A soft pack of cells may be loaded into the battery module housing 100. Bus bars may be connected to the bus bar connector 120, and these bus bars electrically connect the battery module to another battery module. The battery module housing 100 also includes screw holes 130 as connection interfaces for mechanically connecting the battery module housing 100 to another battery module housing.
Fig. 2 shows the battery module housing 100 according to the embodiment of fig. 1 in a top view. The battery module housing 100 includes a cooling fluid inlet 103 and a cooling fluid outlet 104. The battery module case 100 includes a bus bar connector 120. These bus bar terminals are used, for example, to electrically connect the battery modules via bus bars. The battery module case 100 can be mechanically connected to another battery module case by screw holes 130 provided in the battery module case 100.
Fig. 3 illustrates a battery module 140 according to an embodiment in a cross-sectional view. The battery module 140 is loaded with the pouch cells 105. The soft pack cell includes tabs 1051, 1052. The pouch cells 105 are suitably arranged in the battery module case 100 according to the embodiment of fig. 1 such that the connection tab 1051 is arranged in the first region 101 of the battery module case and the connection tab 1052 is arranged in the second region 102 of the battery module case 100. A cooling fluid inlet 103 is arranged at the first region 101 and a cooling fluid outlet 104 is arranged at the second region 102.
By circulating the cooling fluid flowing in to the connecting piece 1051, the connecting piece 1051 of the soft pack cell 105 is directly cooled. The cooling fluid flows from the first region 101, through the soft pack cells 105 to the second region 102 of the battery module housing 100, and out of the second region 102 of the battery module housing 100 via the cooling fluid outlet 104. When the cooling fluid flows through the second region 102, the cooling fluid flows around the connecting piece 1052 of the soft pack cell 105, and directly cools the connecting piece 1052. A plurality of pouch cells 105 may be housed in the battery module case 100. The pouch cells 105 are compressed in the battery module case 100 when they are loaded into the battery module case 100.
Fig. 4 illustrates the battery module 140 according to another embodiment in a sectional view. The battery module 140 includes a plurality of cooling fluid inlets 103 and a plurality of cooling fluid outlets 104. A pouch cell 105 having a first connecting tab 1051 and a second connecting tab 1052 is inserted into the battery module housing 100 of the battery module 140. When the cooling fluid flows in through the plurality of cooling fluid inlets 103, the cooling fluid flows into the battery module in a distributed manner, thereby directly cooling the first connection piece 1051 over as large an area as possible. The cooling fluid that flows in flows through the soft pack cell 105, and flows out from the cooling fluid outlet 104. Since the cooling fluid flows through the soft pack cell 105, the lateral edges of the soft pack cell 105 are also directly cooled. As the cooling fluid exits, it flows through second web 1052, thereby directly cooling as much area of second web 1052 as possible.
Fig. 5 shows an assembly of battery modules 150, 160, 170 according to a further embodiment in a sectional view. The battery modules 150, 160, 170 each correspond to the battery module 140 according to the embodiment of fig. 3. The battery modules 150, 160, 170 are arranged one above the other and are fluidly connected to each other. Battery module 150 includes a cooling fluid inlet 153 and a cooling fluid outlet 154. The battery module 160 includes a cooling fluid inlet 163 and a cooling fluid outlet 164. The battery module 170 includes a cooling fluid inlet 173 and a cooling fluid outlet 174.
Each battery module 150, 160, 170 contains a pouch cell 155, 165, 175, respectively. In another embodiment, a plurality of pouch cells 155, 165, 175 are encased in the battery modules 150, 160, 170. The cooling fluid inlet 153 is connected to the cooling fluid channel 157 of the battery module 150. A cooling fluid channel 167 of the battery module 160 is connected to the cooling fluid inlet 163. The cooling fluid inlet 173 is connected to the cooling fluid channel 177 of the battery module 170.
The cooling fluid passages 157, 167, 177 are coupled to each other. The cooling fluid flows into the cooling fluid passage 157. A portion of the cooling fluid flows into the battery module 150 via the cooling fluid inlet 153. The remaining portion of the cooling fluid flowing into the cooling fluid channel 157 flows from the cooling fluid channel 157 into the cooling fluid channel 167 in the direction of flow (see arrow direction). A portion of the cooling fluid flowing into the cooling fluid channel 167 flows into the battery module 160 via the cooling fluid inlet 163. The remaining portion of the cooling fluid flowing into the cooling fluid channel 167 flows into the cooling fluid channel 177. The cooling fluid flowing into the cooling fluid channel 177 flows into the battery module 170 via the cooling fluid inlet 173.
In order to be able to let all cooling fluid required for the battery modules 150, 160, 170 flow into the cooling fluid channel 157, according to this further embodiment the diameter of the cooling fluid channel 157 is larger than the diameter of the cooling fluid channel 167. Further, the diameter of the cooling fluid channel 167 is larger than the diameter of the cooling fluid channel 177. Thereby, the cooling fluid can be caused to flow into the cooling fluid passage 157 with the pressure kept the same. The cooling fluid flowing into the respective battery module 150, 160, 170 flows around the first connecting tabs 1551, 1651, 1751 of the respective pouch cell 155, 165, 175, thereby directly cooling the first connecting tabs 1551, 1651, 1751. The cooling fluid flows through the respective pouch cells 155, 165, 175, thereby also cooling the narrow sides of the pouch cells 155, 165, 175.
The second connecting webs 1552, 1652, 1752 are likewise cooled directly by the circulation of the cooling fluid. The cooling fluid flowing into the respective battery module 150, 160, 170 flows out of the battery module 150, 160, 170 again via the respective cooling fluid outlet 154, 164, 174. In another embodiment, the other battery modules 150, 160, 170 are fluidly connected to each other and the cooling fluid flows into the other cooling fluid channels 157, 167, 177 of the other battery modules 150, 160, 170. In another embodiment, the two battery modules 150, 160, 170 are fluidly interconnected.
List of reference numerals
100 battery module case
100a, 100c die-cast lid
100b aluminum section bar
101 first region
102 second region
103. 153, 163, 173 cooling fluid inlets
104. 153, 154, 173 cooling fluid outlets
105. 155, 165, 175 soft pack single cell
120 bus bar joint
130 screw hole
140. 150, 160, 170 battery module
157. 167, 177 cooling fluid passages
1051. 1551, 1651, 1751 first connecting piece
1052. 1552, 1652 and 1752 second connecting piece

Claims (9)

1. A battery module housing (100) for a battery module (140, 150, 160, 170) with at least one pouch cell (105) with a first connecting tab (1051) and a second connecting tab (1052), the battery module housing comprising:
a first region (101) and a second region (102) designed for letting a cooling fluid flow from the first region (101) to the second region (102), wherein,
the first region (101) and the second region (102) are arranged such that the first connection tab (1051) can be arranged in the first region (101) and the second connection tab (1052) can be arranged in the second region (102), thereby ensuring a direct cooling of these connection tabs (1051, 1052) and a direct cooling of at least one side of the soft pack cell (105) with the cooling fluid.
2. The battery module housing (100) according to claim 1, wherein a cooling fluid inlet 103 is arranged at the first region (101), which cooling fluid inlet is designed for the inflow of the cooling fluid into the first region (101), and a cooling fluid outlet 104 is arranged at the second region (102), which cooling fluid outlet is designed for the outflow of the cooling fluid from the second region (102).
3. The battery module housing (100) according to claim 2, wherein the cooling fluid inlet (103) comprises a fluid distributor which is designed to distribute the cooling fluid in the battery module housing (100) during the inflow of the cooling fluid, and the cooling fluid outlet (104) comprises a further fluid distributor which is designed to let the cooling fluid distributed flowing into the battery module housing (100) flow out jointly from the cooling fluid outlet (104).
4. The battery module casing (100) according to any of claims 2 to 3, wherein the battery module casing (100) comprises a plurality of cooling fluid inlets (103) and a plurality of cooling fluid outlets (104).
5. The battery module housing (100) according to any of the preceding claims, wherein the battery module housing (100) comprises a connection member for connecting other electrical elements with the battery module housing (100).
6. The battery module housing (100) according to any of the preceding claims, wherein the battery module housing (100) comprises a clamping frame, whereby at least one pouch cell (105) can be fixed in the battery module housing (100).
7. An assembly of battery modules (140, 150, 160, 170), comprising:
a first battery module (150) having a battery module housing (100) into which at least one pouch cell (155) having a first connecting tab (1551) and a second connecting tab (1552) is inserted, the battery module housing having a first region and a second region which are designed for the flow of a cooling fluid from the first region to the second region, wherein the first region and the second region are arranged such that the first connecting tab (1551) is arranged in the first region and the second connecting tab (1552) is arranged in the second region, thereby ensuring a direct cooling of the connecting tabs (1551, 1552) and a direct cooling of at least one side of the pouch cell (155) by means of the cooling fluid;
a second battery module (140, 160, 170) with a battery module housing (100) into which at least one pouch cell (105, 165, 175) with a first connecting tab (1051, 1061, 1071) and a second connecting tab (1052, 1062, 1072) is inserted, with a first region and a second region which are designed for a cooling fluid to flow from the first region to the second region, wherein the first region and the second region are arranged such that the first connecting tab (1051, 1061, 1071) is arranged in the first region and the second connecting tab (1052, 1062, 1072) is arranged in the second region, whereby a direct cooling of the connecting tabs (1051, 1061, 1052, 1062, 1072) and a direct cooling of at least one side of the pouch cell (105, 165, 175) are produced by means of the cooling fluid, wherein the content of the first and second substances,
a first region of the first battery module (150) is connected with a first region of the second battery module (140, 160, 170), and a second region of the first battery module (150) is connected with a second region of the second battery module (140, 160, 170), wherein,
the cooling fluid flows from a first region of the first battery module (150) into a first region of the second battery module (140, 160, 170) in order to be able to achieve a flow of the cooling fluid into the first battery module (150) and the second battery module (140, 160, 170), and
the cooling fluid flowed in from the first region of the first battery module (150) flows out from the second region of the first battery module (150), and the cooling fluid flowed in from the first region of the second battery module (140, 160, 170) flows out from the second region of the second battery module (140, 160, 170).
8. The assembly of claim 7, wherein the first battery module (150) comprises a first cooling fluid channel (157) and the second battery module (140, 160, 170) comprises a second cooling fluid channel (167, 177), and the first cooling fluid channel (157) and the second cooling fluid channel (167, 177) are coupled to each other, and a diameter of the first cooling fluid channel (157) is greater than a diameter of the second cooling fluid channel (167, 177).
9. The assembly according to any of claims 7 to 8, wherein the first tab (1551) of the pouch cell (155) of the first battery module (150) is in electrical contact with the positive electrode of the first battery module (150), and the second tab (1552) of the pouch cell (155) of the first battery module (150) is in electrical contact with the busbar of the first battery module (150).
CN202111252704.4A 2020-10-30 2021-10-27 Assembly of battery module casing and battery module Pending CN114447469A (en)

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Publication number Priority date Publication date Assignee Title
KR101143279B1 (en) 2009-08-20 2012-05-11 주식회사 엘지화학 Battery Pack Having Novel Cooling Structure
JP5845354B2 (en) 2011-09-29 2016-01-20 エルジー・ケム・リミテッド Battery pack having a novel cooling structure
DE102015107170A1 (en) 2015-05-07 2016-11-10 Lisa Dräxlmaier GmbH COOLING PLATE FOR ARRANGEMENT ON A VEHICLE BATTERY MODULE AND MANUFACTURING METHOD
DE102017215982A1 (en) 2017-09-11 2019-03-14 Mahle International Gmbh Battery cell assembly

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