DE202021100442U1 - Accumulator system - Google Patents

Abstract

Battery system with a battery module (12) having a plurality of lithium-ion cells (38), a cabinet (2) which can be hermetically sealed from the ambient atmosphere (18) and has a storage compartment (11) for receiving the battery module (12), and an air distribution space (28) to which on the one hand the storage compartment (11) and on the other hand an air conditioner (17) are fluidically connected, the accumulator module (12) having a module housing (19), the module housing (19) having an air inlet opening (25) and a Air outlet opening (26), the air inlet opening (25) and the air outlet opening (26) interacting with a fan (27) in terms of flow technology, characterized in that the air outlet openings (26) of the accumulator modules (12) open into a common exhaust air space (42), which is fluidically connected to an exhaust air duct (43) opening into the ambient atmosphere (18), the exhaust air duct (42) at least in sections e is provided by an enclosure filled with fire protection agent ..

Description

The invention relates to a battery system with a battery module having a plurality of lithium-ion cells, a closet that can be closed in a fluid-tight manner with respect to the ambient atmosphere and which has a storage compartment for accommodating the battery module, and an air distribution space to which on the one hand the storage compartment and on the other hand an air conditioner are fluidically connected , the accumulator module having a module housing, the module housing having an air inlet opening and an air outlet opening, the air inlet opening and the air outlet opening interacting with a fan in terms of flow technology.

Accumulator modules having lithium-ion cells in general and battery storage systems based on such accumulator modules in particular are well known per se from the prior art, which is why separate documentary evidence is not required at this point.

In normal operation, the service life of a lithium-ion battery module is very much dependent on maintaining an optimized operating temperature. Temperatures below 10 ° C and above 30 ° C have a negative influence on the properties of the battery modules or their cells. Operating the battery modules outside the optimal cell operating window leads to accelerated aging and thus to a loss of capacity of the cells over time.

In the system network, the lithium-ion modules are connected several times in series to achieve a higher system voltage. In this case, the total capacity and the service life of the system depend on the individual and weakest cell. In order to enable optimized system operation, it is therefore desirable not only to operate individual cells, but also to operate all cells of the system within the optimized temperature window.

From the prior art is according to DE 20 2015 202 602 U1 a battery cabinet with a battery chamber with a battery rack is known which receives battery cell groups spaced apart from one another, a cooling system with a fan being provided in a battery cabinet door. A volume flow generated by means of the fan is divided into several partial volume flows by the spaced arrangement of the battery cell groups, which is intended to bring about a more uniform cooling of the individual battery cell groups.

From the DE 10 2017 207 691 A1 a stationary storage system for batteries is known, in which vehicle batteries can be stored prior to assembly in a vehicle. This storage system has a ventilation system, with a storage area, which is provided for one vehicle battery in each case, being assigned a gas supply and a gas suction. A gas flow generated in this way can be detected via a gas sensor. This ensures that each storage area is individually ventilated.

From the DE 601 28 601 T2 Furthermore, a switch cabinet for configuring an uninterruptible supply system and the backplane wiring used therein is known, with ventilation openings being provided on the side panels and back panels which, in conjunction with a fan, are intended to enable simplified cooling of energy modules provided in the switch cabinet.

It is the object of the invention to propose an accumulator system of the type mentioned at the beginning, which structurally makes it possible to avoid aging of the cells and thus a loss of capacity due to cell operation within a predeterminable temperature window.

To solve this problem, the invention proposes an accumulator system of the type mentioned at the beginning, which is characterized in that the air outlet openings of the accumulator modules open into a common exhaust air space which is fluidically connected to an exhaust air channel opening into the ambient atmosphere, the exhaust air channel at least in sections from a housing filled with fire retardant is provided.

The accumulator system according to the invention has one, preferably several accumulator modules and a cabinet. In the intended use, the latter serves to accommodate the accumulator module, for which purpose the cabinet has a storage compartment. The accumulator module is accommodated in this storage compartment in the intended use.

The accumulator system also has an air conditioner. When used as intended, this serves to charge the accumulator module with pre-tempered air. This enables the battery module to be cooled or heated, depending on the desired operating temperature. In this respect, it is possible to select an operating temperature that is optimized for the accumulator module and to keep it within a predeterminable temperature window. Negative for service life and overall capacity Temperature fluctuations can thus be avoided in an advantageous manner.

In order to enable a homogeneous application of air to all cells and / or accumulator modules with pre-tempered air, the accumulator system also has an air distribution space. On the one hand the storage compartment and on the other hand the air conditioner are fluidically connected to these. During operation, the air conditioner introduces pre-tempered air into the air distribution space. This is where the pre-tempered air is distributed homogeneously to all of the accumulator cells housed in the cabinet. In this way, the temperature of all cells is equal, so that the service life and / or the total capacity of the system is not negatively influenced by a cell that is weakened by overcooling or overheating.

The rechargeable battery system is further characterized in that the rechargeable battery module has a module housing. The lithium-ion cells of the module are arranged within this housing, with adjacent lithium-ion cells being arranged adjacent to one another under loading of a gap. The pre-tempered air, which was previously homogeneously distributed in the air distribution space, can flow into the battery module through these gap spaces and air around the lithium-ion cells. In this way, not only is an even temperature reached in the air that acts on the cells, but also an even distribution of air within an accumulator module is ensured. As a result, all cells are treated equally. In order to allow air to enter the gaps between the individual cells, provision is also made for the module housing to have an air inlet opening and an air outlet opening. In this case, air can flow from the air distribution space into the module housing of the accumulator module via the air inlet opening. Air is released through the air outlet opening. The mechanical solution of temperature control is used to cool the entire system.

The accumulator system also has a fan. This interacts with the air inlet opening and the air outlet opening in terms of flow. During operation, the ventilator draws in the pre-tempered air released by the air conditioner, which is then homogenized in the manner described above via the air distribution space and then introduced into the module housing for flushing the cells. In this respect, the fan ensures a forced ventilation that is effective during operation and that ensures that all cells of the accumulator module are acted on equally.

According to the invention it is provided that the air outlet openings of the accumulator modules open into a common exhaust air space. Accordingly, a common exhaust air space is provided in correspondence with the common air distribution space. The air given off by the accumulator modules flows into this exhaust air space, that is to say the air that has flowed through the individual accumulator modules via the air distribution space. This configuration has the advantage that the exhaust air that collects in the exhaust air space can be discharged together via a central exhaust.

Furthermore, it is provided that the exhaust air space is fluidically connected to an exhaust air duct opening into the ambient atmosphere.

It is therefore provided that the exhaust air space does not open directly into the ambient atmosphere, but that instead an exhaust air duct is provided which fluidically couples the exhaust air space with the ambient atmosphere. This configuration is particularly advantageous for reasons of fire protection, because fire gases released in the event of a fire can be discharged in a targeted manner and, if necessary, also captured.

Alternatively, the exhaust air space is connected to an exhaust air duct, which in turn is in fluidic connection with a heat exchanger, that is, the air conditioning unit.

Furthermore, it is provided that the exhaust air duct is provided at least in sections by a housing filled with fire protection agent. A central exhaust air duct design is provided, which is separated from the ambient atmosphere by an enclosure. This housing is preferably filled with fire protection agent, so that in the event of fire gases escaping via the exhaust air duct can be detoxified, for example by filters, and / or cooled by a labyrinth. It is also possible to use reactive fire retardants, for example those which additionally release cooling substances in the event of a fire.

The system according to the invention structurally ensures that air is applied to all cells of the accumulator module with pre-tempered air, that is, evened out, so that all cells are treated equally. In this way, an optimized temperature can be set in a targeted manner within a specifiable temperature window, which as a result leads to the fact that the entire capacity of the accumulator system is optimized, and this with an optimized service life at the same time.

According to a further feature of the invention it is provided that the air conditioner is arranged on the outside of the cabinet on the cabinet. The cabinet of the accumulator system has in itself known way, inter alia, via a side wall. The air conditioner is preferably arranged on the outside of this side wall. It is directly exposed to the air atmosphere surrounding the cabinet and can suck in ambient air during operation, which is then cooled or heated inside the air conditioning unit to a predeterminable temperature before it is then introduced into the air distribution space for homogenized forwarding.

According to a further feature of the invention it is provided that the cabinet has a plurality of storage compartments for the respective accommodation of a battery module. Accordingly, the cabinet not only has one storage compartment, but also several storage compartments. Each storage compartment is used to hold an accumulator module. In this respect, the cabinet can be equipped with a plurality of accumulator modules.

According to a further feature of the invention it is provided that all storage compartments are fluidically connected to a common air distribution space. This advantageously enables a uniform application of air to all of the storage compartments or to all of the accumulator modules received by the storage compartments. The air distribution space ensures both a homogenization of the air distribution to the storage compartments and the prevention of an undesired temperature gradient.

According to a further feature of the invention it is provided that the air distribution space extends between a cabinet rear wall and the storage compartments provided by the cabinet. The air distribution space is therefore formed on the rear of the storage compartments. Front access to the storage compartments is therefore unhindered. During operation, the individual accumulator modules are charged with air via their rear side opposite the charging opening, that is, the accumulator modules are exposed to air from the rear.

According to a further feature of the invention, it is provided that the air distribution space has an air inlet opening that is adjustable in the flow passage on the air conditioning device side. This makes it possible to regulate the amount of air flowing in. The more air is required, the larger the passage is made and vice versa. In order to be able to achieve the finest possible coordination with regard to the amount of air supplied, a plurality of air inlet openings are provided which are each designed to be variable in size, that is to say which are adjustable with regard to their throughflow passage. In this case, such a flow passage setting can be carried out automatically, for example as a function of a measured actual temperature of the accumulator modules and / or the inlet temperature of the air preheated by means of the air conditioner. An adjustment can also be made or in combination with this, depending on the desired air volumes.

According to a further feature of the invention it is provided that the module housing has a plurality of air inlet openings, each of which is designed to be variable in size. Accordingly, not only does the air distribution space have air inlet openings of variable size, the module housing itself also provides air inlet openings that are each designed to be variable in size. In order to set an optimized operating temperature, a preferably automated regulation of both the air inlet openings and the air inlet openings is possible.

According to a further feature of the invention it is provided that the module housing has a central air outlet opening to which the fan is connected on the suction side.

In practical use, this construction proves to be particularly simple and less prone to failure. In addition, the fan can be accessed from the front, which is an advantage in the event that repairs may become necessary.

One fan is provided for each accumulator module. The fan of this battery module is therefore provided for charging an accumulator module with air. This is connected on the suction side to a central air outlet opening of the module housing of the accumulator module. During operation, the air in the module housing is suctioned off by the fan. This requires a subsequent flow of pre-tempered air from the air distribution space into the module housing, specifically through the air inlet openings on the module housing side. In a structurally simple manner, an exchange of air and thus a charging of the respective cells with preheated air are possible.

According to a further feature of the invention it is provided that the air outlet opening is provided by the end face of the module housing opposite the air distribution space. This advantageously requires a maximum path for the air through the module housing, so that an optimized utilization of the preheated air is achieved with the aim of the most homogeneous temperature distribution possible within the accumulator module.

According to a further feature of the invention it is provided that the air inlet openings are provided by a side wall of the module housing. This results in an air deflection of 90 °, in that the preheated air is passed through a Side wall fed and discharged via a front wall standing at a 90 ° angle to this. This also supports the equalization of air to all of the cells provided by the accumulator module.

According to a further feature of the invention it is provided that the housing is formed by a cassette arranged to the side of the storage compartments. This cassette is arranged within the volume space provided by the cabinet. There is a flow connection to the exhaust air space provided on the front of the storage compartments. The cassette is preferably formed on the side of the storage compartments, which ensures an overall compact overall structure.

According to a further feature of the invention, it is provided that the cassette has an extraction opening on the front, to which the exhaust air duct adjoins in terms of flow. Exhaust air that collects in the exhaust air space can therefore be transferred into the exhaust air duct via the exhaust opening provided on the front of the cassette. From here there is then a flow through the exhaust air duct, possibly with fire protection means passing through. On the outlet side, the exhaust air duct opens into the ambient atmosphere.

With the embodiment according to the invention, an overall battery system is proposed which makes it possible to keep the lithium-ion cells of the module at an operating temperature within an optimized temperature window. In structural terms, this is achieved in particular in that the cells are charged with preheated air, with both homogenization of the preheated air and equal charging of the cells with preheated air taking place. This ensures, in particular, that cells are treated equally and that individual cells are not operated outside the optimized temperature window, which would be disadvantageous for the overall system.

• 1 In schematischer Frontansicht ein erfindungsgemäßes Akkumulatorsystem;
• 2 in schematischer Draufsicht von oben ein Akkumulatormodul des erfindungsgemäßen Akkumulatorsystems;
• 3 in schematischer Perspektivansicht das Akkumulatormodul nach 2;
• 4 in schematischer Perspektivteilansicht den Schrank des erfindungsgemäßen Akkum ulatorsystems;
• 5 in schematischer Draufsicht von oben ein in einem Staufach angeordnetes Akkumulatormodul;
• 6 in schematischer Draufsicht von oben das Akkumulatormodul nach 5 und
• 7 in schematischer Perspektivteilansicht das Gehäuse des erfindungsgemäßen Akkumulatorsystems.

Further features and advantages of the invention emerge from the following description with reference to the figures. Show:

• 1 In a schematic front view, an accumulator system according to the invention;
• 2 in a schematic plan view from above, an accumulator module of the accumulator system according to the invention;
• 3 in a schematic perspective view the accumulator module according to 2 ;
• 4th a schematic perspective partial view of the cabinet of the accumulator system according to the invention;
• 5 in a schematic plan view from above a battery module arranged in a storage compartment;
• 6th in a schematic plan view from above, the accumulator module according to 5 and
• 7th in a schematic perspective partial view the housing of the accumulator system according to the invention.

1 leaves, in a schematic top view from the front, that is, in a front view, an accumulator system according to the invention 1 detect. This has a plurality of accumulator modules 12th , which in turn each have a plurality of lithium-ion cells 38 exhibit, as can be seen from a synopsis of the 1 and 6th results.

The accumulator modules 12th are in a closet 2 housed. The cabinet has 2 over two side walls 3 and 4th , one in 1 rear wall that cannot be seen in more detail 5 as well as a ceiling part 6th and a bottom part 7th . The cabinet is on the front 2 through a door 14th lockable, the door 14th over two door leaves 15th and 16 disposes. The cupboard 2 represents the cabinet volume 8th ready.

To accommodate the battery modules 12th in the cupboard 2 has the closet 2 per accumulator module 12th via a storage compartment 11 . In the embodiment shown according to 1 represents the closet 2 a total of 14 storage compartments 11 ready with 9 of these storage compartments 11 one accumulator module each 12th record, tape. The other five storage compartments 11 serve to accommodate further components of the accumulator system 1 , for example a battery management system, an inverter and a control unit. Two of the storage compartments shown 11 remain free for assembly purposes according to this exemplary embodiment, but can also be used to accommodate additional system components.

The storage compartments 11 are designed as standardized 19 inch slide-in compartments in the exemplary embodiment shown and each serve to accommodate a battery module 12th as exemplified in the 2 and 3 is shown, this having a height dimension of 160 mm, a width dimension of 370 mm and a depth dimension of 660 mm. With a total of 9 accumulator modules 12th instructs the accumulator system 1 a total capacity of 68.5 kWh.

For filling the storage compartments 11 is the front of the cabinet 2 located door 14th to open. With the door open 14th is an unhindered access to the storage compartments 11 enabled on the front. When the door is locked 14th is the closet 2 compared to the outside atmosphere 18th airtight locked. In the context of the invention, “airtight” does not mean a hermetic seal. Rather, “airtight” means that no unwanted air exchange to a large extent between the surrounding atmosphere 18th and the one from the closet 2 enclosed volume space 8th can take place (the system is designed according to protection class IP55).

The accumulator system 1 also has an air conditioner 17th . In the exemplary embodiment shown, this is outside the cabinet 2 positioned on the outside of the side wall 4th on the side wall 4th arranged. The air conditioner 17th serves - as will be explained in more detail below - for the from the cabinet 2 enclosed volume space 8th to be charged with preheated air. For the purpose of simultaneous venting, there is one with an exhaust duct 43 equipped cassette 9 provided, the side of the storage compartments in the embodiment shown 11 is arranged. “Airtight” in this sense means that a targeted exchange of air via the air conditioning unit provided for this purpose 17th or via the ducting provided for this purpose, unwanted air ingress through the door 14th but not possible when the door 14th in normal operation of the battery system 1 closed is.

Like the partially cut perspective view after 4th can be seen is in the space between the rear wall 5 of the closet 2 and the in 4th for a better overview because of storage compartments not shown 11 an air distribution space 28 educated. This air distribution space 28 stands on the one hand with the storage compartments 11 and on the other hand with the air conditioner 17th in fluidic connection. All storage compartments 11 are therefore connected to the common air distribution space 28 connected fluidically.

The air distribution space 28 has air inlet openings on the air conditioner side 30th which are adjustable with regard to their throughflow passage. In normal operation, the air conditioner 17th Air preheated and via the air inlet openings 30th in accordance with the arrows 38 in the air distribution space 28 brought in.

In the air distribution room 28 there is an even distribution of the pre-tempered air, so that starting from the air distribution space 28 an even loading of the individual storage compartments 11 can take place with preheated air. Because the air distribution space 28 between storage compartments 11 one hand and the back wall 5 on the other hand, takes place with reference to the depth direction 29 of the closet 2 a rear loading of the storage compartments 11 with from the air distribution room 28 originating air.

One from a storage compartment 11 recorded accumulator module 12th is exemplary in the 2 and 3 shown. As can be seen from these views, each accumulator module has 12th via a module housing 19th . Such a module housing 19th has two side walls 20th and 21 , a front end wall 22nd , a rear bulkhead 23 as well as a blanket 24 and a bottom not shown in detail in the figures. Inside the module housing 19th are lithium-ion cells 38 arranged with adjacent lithium-ion cells 38 leaving a gap 39 (see. 6th ) are arranged at a distance from one another.

A module housing 19th has a plurality of air inlets 25th each from the side walls 20th and 21 are provided. These air inlets 25th are designed to be variable in size, that is, their flow cross-section is adjustable, with which the amount of air can be set, which in normal operation in the module housing 19th via the air inlets 25th got.

The module housing 19th also has a central air outlet opening 26th . At this air outlet opening 26th is a fan 27 connected on the suction side. In normal operation, this can be done using the fan 27 Air is sucked in, which leads to over the air inlets 25th Air in the module housing 19th flows in through the crevices 39 between the lithium-ion cells 38 passed through and via a central canal 40 (see. 5 ) to the air outlet opening 26th got.

On the front of an accumulator module 12th released air collects in an exhaust air room 42 that acts as a gap between the inside of the door 14th and the front covers 13th the storage compartments 11 is trained. This exhaust air room 42 is in fluidic communication with one of the cassette 9 provided exhaust duct 43 like this in particular 7th reveals. The cassette 9 an extractor opening on the front 41 to which the exhaust duct is attached 43 connects. In normal operation via the exhaust opening 41 discharged air arrives after passing through the exhaust duct 43 into which the accumulator system 1 surrounding ambient atmosphere 18th .

The construction according to the invention allows charging of the battery modules 12th with through the air conditioner 17th pre-tempered air. This ensures that the lithium-ion cells operate 38 takes place within a specifiable and optimized temperature window. Due to the configuration according to the invention, all lithium-ion cells are thereby 38 equally pressurized with air, all with air at the same temperature. In this respect, all lithium-ion cells are treated equally 38 instead of. in the The result of this construction is an optimized total capacity and an optimized service life.

• Luft wird mittels des Klimageräts 17 auf eine gewünschte Zieltemperatur vortemperiert und in den rückwärtig der Staufächer 11 ausgebildeten Luftverteilraum 28 eingefördert. Da die Lufteintrittsöffnungen 25 in den Luftverteilraum 28 im Durchströmungsquerschnitt größenvariabel einstellbar sind, kann die Menge an in den Luftverteilraum 28 eingeförderter Luft in Abhängigkeit der Temperatur der zu kühlenden oder zu erwärmenden Akkumulatormodule 12 eingestellt werden. Zudem ermöglichen es die größenvariablen Lufteintrittsöffnungen 25, dass eine definierte Lustströmungsgeschwindigkeit eingestellt wird. Durch die gezielte Führung hinter die von den Staufächern 11 jeweils aufgenommenen Akkumulatormodule 12 und das Einstellen einer optimierten Strömungsgeschwindigkeit ist es möglich, dass sich die Zuluft homogen innerhalb des Luftverteilraums 28, das heißt auf der rückwärtigen Seite der Akkumulatormodule 12 verteilt, so dass im weiteren eine gleichmäßige Luftbeaufschlagung sämtlicher Akkumulatormodule 12 stattfinden kann. Es ist so eine homogene Kühlung beziehungsweise Erwärmung der einzelnen Lithium-Ionen-Zellen 38 sämtlicher Akkumulatormodule 12 möglich.

During operation, the lithium-ion cells are exposed to air 38 as follows:

• Air is supplied by means of the air conditioner 17th Pre-heated to a desired target temperature and placed in the rear of the storage compartments 11 trained air distribution space 28 funded. Because the air intakes 25th in the air distribution space 28 are adjustable in size in the flow cross-section, the amount can be in the air distribution space 28 conveyed air depending on the temperature of the battery modules to be cooled or heated 12th can be set. In addition, the variable-size air inlets make it possible 25th that a defined pleasure flow velocity is set. Through the targeted guidance behind the storage compartments 11 each recorded battery modules 12th and by setting an optimized flow rate, it is possible for the supply air to be homogeneous within the air distribution space 28 , that is, on the rear side of the battery modules 12th distributed, so that in the further a uniform application of air to all battery modules 12th can take place. It is a homogeneous cooling or heating of the individual lithium-ion cells 38 of all accumulator modules 12th possible.

As can be seen from the 5 and 6th results is due to the housing of the battery modules 12th a targeted forced air routing is specified. From the air distribution room 28 originating air arrives in accordance with the arrows 34 via a central entrance 32 into the respective accumulator module 12th receiving storage compartment 11 . Inside the storage compartment 11 the air is redirected and according to the arrows 36 via the side air inlets 25th into the module housing 19th of each accumulator module 12th guided.

As can be seen in particular from the representation 6th results, the air inlet openings in the module housing 19th air reaching the lithium-ion cells 38 passed until they came to a central canal 40 got. From there, the air is transported away via the air outlet opening 26th in accordance with the arrows 37 who then have an exit 33 in accordance with the arrows 35 the storage compartment 11 leaves on the front.

With the flow through the crevices 39 become the respective gap space 39 neighboring lithium-ion cells 38 surrounded by air, which, depending on the pre-tempering of the air, results in cooling or heating of the lithium-ion cells 38 leads.

The one about the Brexit 38 the storage compartments 11 released air collects on the front of the storage compartments 11 in the designated exhaust air room 42 at. From there, the exhaust air passes through an exhaust opening 10 into an exhaust duct 43 , which in the embodiment shown from a side of the storage compartments 11 arranged cassette 9 is provided.

• - dass eine zielgerichtete Führung der vortemperierten Luft in Tiefenrichtung 29 hinter die Akkumulatormodule 12 stattfindet,
• - dass ein zielgerichtetes Absaugen der Abluft über eine seitlich der Staufächer 11 vorgesehene Kassette 9 stattfindet, womit unerwünschte Hot-Spots vermieden sind und
• - dass eine Einhausung der Akkumulatormodule 11 vorgesehen ist, so dass ein Ansaugen der vortemperierten Luft nur von der hinteren Seite der Akkumulatormodule 12 möglich ist und dies kombiniert damit, dass die Abluft nur zur vorderen Seite der Akkumulatormodule 12, das heißt in den frontseitig ausgebildeten Abluftraum 42 gestattet ist.

As can be seen from the above description, the construction according to the invention enables a homogeneous temperature distribution within the system, that is to say a temperature equal treatment of all of the accumulator modules 12th provided lithium-ion cells 38 . This is achieved in particular by

• - that a targeted guidance of the pre-tempered air in the depth direction 29 behind the accumulator modules 12th takes place,
• - that a targeted suction of the exhaust air via a side of the storage compartments 11 intended cassette 9 takes place, thus avoiding undesirable hot spots and
• - That a housing for the battery modules 11 is provided so that the preheated air can only be sucked in from the rear side of the accumulator modules 12th is possible and this combined with the fact that the exhaust air only to the front side of the accumulator modules 12th , that is, in the exhaust air space formed on the front 42 is permitted.

List of reference symbols

1

Accumulator housing

2

cabinet

3

Side wall

4th

Side wall

5

Back wall

6th

Ceiling part

7th

Bottom part

8th

Cabinet volume space

9

cassette

10

Vent opening

11

Storage compartment

12th

Accumulator module

13th

cover

14th

door

15th

Door leaf

16

Door leaf

17th

Air conditioner

18th

Ambient atmosphere

19th

Module housing

20th

Side wall

21

Side wall

22nd

front bulkhead

23

rear bulkhead

24

cover

25th

Air inlet opening

26th

Air outlet opening

27

fan

28

Air distribution space

29

Depth direction

30th

Air inlet

31

arrow

32

entry

33

exit

34

arrow

35

arrow

36

arrow

37

arrow

38

Lithium-ion cell

39

Gap space

40

channel

41

arrow

42

Exhaust air room

43

Exhaust duct

QUOTES INCLUDED IN THE DESCRIPTION

This list of the documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• DE 202015202602 U1 [0005]
• DE 102017207691 A1 [0006]
• DE 60128601 T2 [0007]

Claims (13)

Battery system with a battery module (12) having a plurality of lithium-ion cells (38), a cabinet (2) which can be hermetically sealed from the ambient atmosphere (18) and has a storage compartment (11) for receiving the battery module (12), and an air distribution space (28) to which on the one hand the storage compartment (11) and on the other hand an air conditioner (17) are fluidically connected, the accumulator module (12) having a module housing (19), the module housing (19) having an air inlet opening (25) and a Air outlet opening (26), the air inlet opening (25) and the air outlet opening (26) interacting with a fan (27) in terms of flow technology, characterized in that the air outlet openings (26) of the accumulator modules (12) open into a common exhaust air space (42), which is fluidically connected to an exhaust air duct (43) opening into the ambient atmosphere (18), the exhaust air duct (42) at least in sections se is provided by an enclosure filled with fire retardant. Accumulator system according to Claim 1 characterized in that the air conditioner (17) is arranged on the outside of the cabinet (2) on the cabinet (2). Accumulator system according to Claim 1 or 2 , characterized in that the cabinet (2) has a plurality of storage compartments (11) for each receiving a battery module (12). Accumulator system according to one of the preceding claims, characterized in that all storage compartments (11) are fluidically connected to a common air distribution space (28). Accumulator system according to one of the preceding claims, characterized in that the air distribution space (28) extends between a cabinet rear wall (5) and the storage compartments (11) provided by the cabinet (2). Accumulator system according to one of the preceding claims, characterized in that the air distribution space (28) has an air inlet opening (30) adjustable in the flow passage on the air conditioning device side. Accumulator system according to one of the preceding claims, characterized in that the module housing (19) has a plurality of air inlet openings (25) which are each designed to be variable in size. Accumulator system according to one of the preceding claims, characterized in that the module housing (19) has a central air outlet opening (26) to which the fan (27) is connected on the suction side. Accumulator system according to one of the preceding claims, characterized in that the air outlet opening (26) is provided by the end face of the module housing (19) opposite the air distribution space (28). Accumulator system according to one of the preceding claims, characterized in that the air inlet openings (25) are provided by a side wall (20, 21) of the module housing (19). Accumulator system according to Claim 1 , characterized in that the housing is formed by a cassette (9) arranged to the side of the storage compartments (11). Accumulator system according to Claim 11 , characterized in that the cassette (9) has an outlet opening (10) on the front, to which the exhaust air duct (43) is connected in terms of flow. Battery system according to one of the preceding claims, characterized in that adjacent lithium-ion cells (38) are arranged in the module housing (19) at a distance from one another, leaving a gap (39). BK / bd / mr / hn

Images