DE102020006944A1 - Energy storage device with a removable thermal cover for a vehicle battery - Google Patents

Abstract

The invention relates to an energy storage device (1) for a vehicle, with an electrical energy store (2) for providing electrical energy for the vehicle, comprising: - a removable, thermal protective element (3), - a receiving unit (4) of the electrical energy store (2) for receiving the removable, thermal protective element (3), so that the electrical energy store (2) is at least partially enclosed by the removable, thermal protective element (3), the receiving unit (4) along a longitudinal or transverse direction (5 ) the electrical energy store (2) has at least two guide elements (6) for at least partially pushing in and / or pushing out the removable, thermal protective element (3).

Description

The invention relates to an energy storage device for a vehicle, with an electrical energy store for providing electrical energy for the vehicle.

Electrically powered vehicles, such as electric vehicles or hybrid vehicles or plug-in vehicles, have a powerful battery. In particular, electrified commercial vehicles (electrically powered trucks) have a powerful electric traction battery. A very powerful electric traction battery is required for the use of electrified commercial vehicles over long distances.

This leads to the problem that the electric traction battery cannot be heated sufficiently at extremely low outside temperatures to reach or maintain its ideal operating temperature point. A similar problem exists with very high outside temperatures. Here, the battery often cannot be cooled sufficiently well, so that power reductions can occur.

So far, for example, permanently installed thermal covers or temperature covers have been used to keep the temperature of the traction battery in an operating mode.

For example, describes the DE 10 2011 083 393 B4 an energy storage device for a vehicle, in which case the energy storage device can be cooled by means of cooling fins.

A disadvantage of the known solution options is, on the one hand, that in the "transition period", such as between winter and summer or summer and winter, with moderate outside temperatures, the permanently installed thermal covers are either unnecessary or even a hindrance, as the positive influences of the ambient temperature are not used can be. In the worst case, this even makes the cooling or heating of the traction battery inefficient, which can lead to a reduction in performance. The known thermal covers, which are permanently attached to the vehicle, are also disadvantageous in the “transition period” because the vehicle carries additional weight, so that a permanent negative effect on the electrical range of the vehicle has an effect. Likewise, in climatically moderate regions, the use of a thermal cover could possibly even be completely omitted.

The object of the present invention is therefore to be able to adapt a traction battery of a vehicle to the respective application area or the respective application situation of the vehicle in order to be able to keep the operating temperature of the traction battery in an efficient operating window.

This object is achieved by an energy storage device according to patent claim 1. Useful further developments result from the subclaims.

One aspect relates to an energy storage device for a vehicle, with an energy storage device for a vehicle, with an electrical energy store for providing electrical energy for the vehicle, characterized by a removable, thermal protective element, a receiving unit of the electrical energy store for receiving the removable, thermal protective element So that the electrical energy store is at least partially enclosed by the removable, thermal protective element, the receiving unit having at least two guide elements along a longitudinal or transverse direction of the electrical energy store for at least partially pushing in and / or pushing out the removable, thermal protective element.

The proposed energy storage device enables the operating temperature of the electrical energy storage device to be kept within an efficient operating window, depending on the area of application of the vehicle. As well as the electrical energy storage can be operated efficiently, so that an efficient energy supply is given for the vehicle. Due to the removable thermal protection element, the electrical energy store can be attached to the electrical energy store depending on the circumstances in order to be able to keep an operating temperature of the electrical energy store essentially constant. The removable thermal protection element can in particular provide a thermal cover that is not permanently connected to the vehicle for the electrical energy store of the vehicle. Thus, depending on the season or the application, the removable, thermal protective element may or may not be connected to the electrical energy store. For example, if the removable thermal protection element is not used, it can be stowed outside the vehicle or, for example, in the trunk. The fact that the thermal protection element can be removed means that the vehicle can be saved in weight. For example, the removable thermal protection element can be provided as additional special equipment for the vehicle, so that the basic configuration of the vehicle can be offered at lower cost.

In particular, the removable, thermal protective element can be offered as special equipment in regions or countries with extreme temperature environments or temperature conditions. The possibility of removing the protective element enables negative influences on the operating temperature of the electrical energy store to be reduced.

In particular, the removable, thermal protective element can be designed in such a way that its thermal properties are adapted to the respective application. For example, the removable, thermal protective element can consist of a material with thermal insulation properties. For example, the removable, thermal protective element can consist of plastic.

Depending on the application of the vehicle, the removable, thermal protective element can be received by the receiving unit. In particular, the removable, thermal protective element can be a modular system. Thus, the removable, thermal protective element can only be attached to the electrical energy store when necessary.

For example, the receiving unit can be integrated on the electrical energy store. The receiving unit can thus be part of the electrical energy store. On the other hand, the receiving unit can be arranged on the electrical energy generator as an additional component.

The electrical energy store can be a traction battery, for example. The vehicle can in particular be an electrically driven vehicle, in particular an electric utility vehicle.

Further advantages, features and details of the invention emerge from the following description of preferred exemplary embodiments and on the basis of the drawing (s). The features and combinations of features mentioned above in the description as well as the features and combinations of features mentioned below in the description of the figures and / or shown alone in the figures can be used not only in the respectively specified combination, but also in other combinations or on their own, without the scope of the Invention to leave.

• 1 eine schematische Darstellung der erfindungsgemäßen Energiespeichervorrichtung;
• 2 eine weitere schematische Ausgestellung der Energiespeichervorrichtung aus 1;
• 3 eine weitere schematische Ausgestellung der Energiespeichervorrichtung aus 1; und
• 4 eine weitere schematische Ausgestellung der Energiespeichervorrichtung aus 1.

The following figures show in:

• 1 a schematic representation of the energy storage device according to the invention;
• 2 a further schematic illustration of the energy storage device 1 ;
• 3 a further schematic illustration of the energy storage device 1 ; and
• 4th a further schematic illustration of the energy storage device 1 .

In the figures, functionally identical elements are provided with the same reference symbols.

The 1 shows an energy storage device 1 for a vehicle. The energy storage device is used in particular 1 for supplying the vehicle with electrical energy, the vehicle being an electrically powered vehicle. Energy is provided in particular with an electrical energy store 2 , which can be designed, for example, as a traction battery or battery arrangement or vehicle battery.

So that the electrical energy storage 2 can be operated efficiently, the operating temperature of the electrical energy storage 2 be kept in an efficient operating window. Thus, the electrical energy storage must 2 be protected from external environmental conditions, especially extreme temperature conditions. This can be done with a removable thermal protection element 3 can be achieved. With the removable, thermal protection element 3 it is in particular a thermal cover or a temperature cover. Thus, a non-permanently arranged protective element for the electrical energy store 2 to be provided. Depending on the application, the removable thermal protection element 3 on the electrical energy store 2 to be ordered.

Around the removable thermal protection element 3 depending on the need with the electrical energy storage 2 to be able to connect is a recording unit 4th intended. With the help of the recording unit 3 can the protective element 3 be added so that the electrical energy storage 2 from the removable thermal protection element 3 is at least partially enclosed. At least the lower area of the electrical energy store can thereby 2 of the protective element 3 be enclosed. Around the removable thermal protection element 3 to be able to record, has the recording unit 4th along a longitudinal or transverse direction 5 of electrical energy storage 2 at least two guide elements 6th on. With the help of at least two guide elements 6th can use the removable thermal protection element 3 into the receiving unit 4th pushed in and / or pushed out. In particular, by means of an insertion and / or extension movement 7th the protective element 3 with the electrical energy storage 2 , in particular thermally, are connected. For example, it can be at least two Guide elements 6th be rail elements. So it can be with the receiving unit 4th be a rail or guide system.

For example, the receiving unit 4th on a base area of the electrical energy store 2 be arranged, the receiving unit 4th is designed such that it has a geometry or structure that corresponds to the removable, thermal protective element. This enables a precisely fitting push-in and / or push-out process 7th be carried out so that the electrical energy storage 2 thermal with the protective element 3 is coupled.

For example, the receiving unit 4th and / or the removable thermal protection element 3 have a locking device to the of the receiving unit 4th recorded removable thermal protection element 3 to lock or to fix or to lock. Thus, the protective element 3 safe to the electrical energy storage 2 be positioned. For example, on the receiving unit 4th and / or the thermal protection element 3 Holes are arranged for locking. The locking device for attaching a U-lock can also be designed as theft protection.

The 2 shows a further optional embodiment of the energy storage device 1 . Here is the geometry of the protective element 3 designed as a plate or plate-like element. Thus, in this case, the protective element 3 into a saving as a receiving unit 4th pushed in. Thus, the protective element 3 be designed to save space.

The 3 shows a further embodiment of the energy storage device 1 . The removable, thermal protection element 3 from several individual segments 8th , in particular from three individual segments. This allows the inclusion of the removable, thermal protection element 3 can be made segmentable. This results in a segmentable insert of the removable thermal protective element 3 into the receiving unit 4th . In particular, the 3 a top view of the energy storage device 1 .

The 4th shows a further embodiment of the energy storage device 1 . For example, the removable thermal protection element 3 an electrical heating element 9 and / or an electrical cooling element 10 exhibit. At the electric heating element 9 it can be, for example, a heating plate which is inserted into the protective element 3 is integrated, act. For example, the protective element 3 be designed as a thermal cover with integrated heating elements. It is also like in 3 segmentation possible. A heating plate version can therefore be used for very cold areas of application of the protective element 3 to be provided.

For example, the heating element 9 and / or the cooling element 10 contain a Peltier element. In particular, the heating element 9 and / or the cooling element 10 be designed as an electrochemical converter.

In particular, the removable protective element 3 one heating element each 9 and a cooling element 10 exhibit. Thus, the operating temperature of the electrical energy store 2 as a function of an ambient temperature in the vicinity of the energy storage device 1 or the vehicle can be set or adjusted. For example, the electrical heating element 9 and / or the electrical cooling element 10 via a voltage connection 11 be supplied with electrical energy. This can be done with the help of the electrical energy store 2 of the vehicle itself or connected to an external point. With the help of a charging cable and a charging plug, the protective element 3 be connected to a house connection.

Through the heating element 9 the electrical energy storage device can despite extremely low outside temperatures 2 externally heated or heated. This is advantageous if the vehicle is not plugged into a charging station and has been thermally cooled down to such an extent that the vehicle's own heating elements can no longer be operated. Via the thermocover (protective element 3 ) housed heating elements 9 the vehicle and in particular the electrical energy storage device 2 heat. Furthermore, the protective element allows 3 with the help of the voltage connection 11 in cases in which the vehicle is connected to a charging socket and the heatable Thermocover, protective element 3 , is also supplied with electricity so that the vehicle can be kept ready for operation at even lower temperatures than with the vehicle-side heating elements for the electrical energy store alone 2 it is possible.

List of reference symbols

1

Energy storage device

2

Electrical energy storage

3

removable thermal protection element

4th

Recording unit

5

Longitudinal direction

6th

Guide elements

7th

Push-in and / or push-out movement

8th

Single segments

9

Heating element

10

Cooling element

11

Voltage connection

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 102011083393 B4 [0005]

Claims (7)

Energy storage device (1) for a vehicle, with - An electrical energy store (2) for providing electrical energy for the vehicle, characterized by - a removable thermal protection element (3), - A receiving unit (4) of the electrical energy store (2) for receiving the removable, thermal protective element (3), so that the electrical energy store (2) is at least partially enclosed by the removable, thermal protective element (3), wherein - The receiving unit (4) along a longitudinal or transverse direction (5) of the electrical energy store (2) has at least two guide elements (6) for at least partially pushing in and / or pushing out the removable thermal protective element (3). Energy storage device (1) according to Claim 1 , characterized in that the receiving unit (4) is arranged on a base area of the electrical energy store (2), the receiving unit (4) being designed so that it has a geometry corresponding to the removable, thermal protective element (3). Energy storage device (1) according to one of the preceding claims, characterized in that the receiving unit (4) and / or the removable, thermal protective element (3) has a locking device in order to secure the removable, thermal protective element (3) received by the receiving unit (4). to lock. Energy storage device (1) according to one of the preceding claims, characterized in that the removable, thermal protective element (3) is formed from several individual segments (8), in particular from three individual segments, whereby the receptacle of the removable, thermal protective element (3) can be segmented . Energy storage device (1) according to one of the preceding claims, characterized in that the removable, thermal protective element (3) is designed as a thermal cover or as a temperature cover. Energy storage device (1) according to one of the preceding claims, characterized in that the removable, thermal protective element (3) has a heating element (9), in particular an electrical heating element, wherein the electrical energy store (2) can be heated with the heating element (9) . Energy storage device (1) according to one of the Claims 1 to 5 , characterized in that the removable, thermal protective element (3) has a cooling element (10), in particular an electrical cooling element, wherein the electrical energy store (2) can be cooled with the cooling element (10).

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