WO2019201573A1

WO2019201573A1 - Method for heating a component of an electric motor vehicle, and motor vehicle

Info

Publication number: WO2019201573A1
Application number: PCT/EP2019/057980
Authority: WO
Inventors: Maximilian Benkert; Julien Métayer; Christian Bottke
Original assignee: Cpt Group Gmbh
Priority date: 2018-04-17
Filing date: 2019-03-29
Publication date: 2019-10-24
Also published as: DE102018205784A1

Abstract

The invention relates to a method for pre-heating a component (3, 7) of an electric motor vehicle (1) having the following steps: - charging a traction battery (3) of the motor vehicle (1) by means of a fixed charging station (11); - detecting a pre-heating signal (12); - providing a task (30) which can be carried out by computer; - implementing an attempt at executing the task (13) with a processing unit (4) of the motor vehicle (1) during the charging process in accordance with the pre-heating signal (12); - conducting waste heat, generated by the execution attempt by the processing unit (4) to the component (3, 7) of the motor vehicle (1); and - pre-heating the component (3, 7) by means of the waste heat.

Description

description

Method for heating a component of an electric motor vehicle, and motor vehicle

The invention relates to a method for heating a com ponent of an electric motor vehicle. Furthermore, the invention also relates to a motor vehicle with an electric traction motor, a traction battery and a processing unit processing.

Electric motor vehicles are usually connected to stationary charging stations and charged there. When charging a traction battery of the electric motor vehicle with energy, which is usually provided by a public grid, loaded.

It is also common for the traction battery or an interior of the motor vehicle to be preheated. The preheating is then usually done with energy from the stationary charging station. Typically, for preheating the traction battery or the interior of an electric heating element, for example a PTC heating element (PCT - positive temperature coefficient) in the vicinity of the traction battery or, for example, in an air duct, which leads the interior of the motor vehicle to air arranged. The electric heating element converts the electrical energy from the stationary charging station into heat energy.

A disadvantage of the electrical heating element is that the electrical energy is used exclusively for heat generation. It is an object of the invention to provide a method and a motor vehicle in which a component of the motor vehicle can be heated more energy efficiently.

The object is achieved by a method and a motor vehicle according to the independent claims.

In a method according to the invention, a component of an electric motor vehicle is preheated. The following steps are carried out:

- Charging a traction battery of the motor vehicle by a stationary charging station, in particular in the environment of the motor vehicle;

- detecting a preheating signal;

- Provide a computer-readable task;

- Performing a solution attempt the task with a processing unit of the motor vehicle during the charging process depending on the preheating signal;

Guiding a waste heat generated by the solution attempt by the processing unit to the component of the

Motor vehicle; and

- Preheat the component by the waste heat.

The invention is based on the knowledge that the component of the motor vehicle, in particular a traction battery or an interior, can also be preheated by the waste heat of a processing unit. This is advantageous because then the electrical energy is not only used for heating, but also for solving the problem. In particular, the solution or the result of the task in itself has an economic value. Thus, by the method according to the invention, the preheating power and the dissolving power of the task are provided together. Furthermore, the method is advantageous since, for example, the obstruction of an electric heating element can be dispensed with, since the processing unit can take over the role of the electric heating element. The motor vehicle can thereby be designed with fewer components and thus lighter and cheaper.

The processing unit of the motor vehicle is designed in particular as a control unit or as a computer device. The processing unit comprises in particular a microprocessor and / or an application-specific integrated circuit.

It is further advantageous that the waste heat of the processing unit processing, which is usually undesirable in known motor vehicles, and is often carried away unused with a fan of the motor vehicle, for example, in the environment of the motor vehicle. In the method according to the invention, the waste heat of the processing unit is preferably not led away unused, but supplied to the component to heat them.

During the solution attempt, the processing unit is preferably operated at its maximum power, so that the thermal power loss (TDP) of the processing unit, in particular continuously, is maximum. The processing unit is thus preferably operated in a maximum energy-consuming state.

Preferably, it is provided that a crypto-currency number block is provided as the task. The crypto-currency block may include a cryptocurrency, but it still has to be examined whether the cryptocurrency is contained in it or whether it is just a worthless series of numbers. A cryptocurrency is a digital means of payment, created and transferred using cryptography principles. For example, bitcoin is known as cryptocurrency. In order to limit the new issues of the cryptocurrency, the creation of new blocks of the cryptocurrency will take place with one

Difficulty connected. To do this, the block has to calculate a one-way function implemented as a cryptological hash function. This hash value must meet a well-known condition to be recognized as a valid new block. In the simplest case, the value must be below a predetermined limit. The smaller this limit value, the lower the probability that the newly calculated hash value will be lower. It is correspondingly more difficult to create such a block. The participant changes the block until it has created a valid block whose hash value is below the limit. Each block contains a value called Nonce whose only function is to change it until the hash value of the entire block satisfies the condition. The task is thus to calculate the hash value of modified blocks until a value below the predetermined limit or threshold value is reached by chance. To calculate new issues of the cryptocurrency, several participants also join together to form so-called mining pools, ie production communities. Before preferably, it is also provided that the motor vehicle is designed as part of a mining pool. The cryptocurrency payment block is advantageous because it allows a continuous maximum utilization of the processing unit to be achieved.

If the crypto currency payment block is solved by the processing unit and thereby cryptocurrency is provided, then it is preferably provided that the cryptocurrency is offered for sale on a virtual marketplace. The cryptocurrency is then preferably sold in the virtual marketplace. Thus, the electrical energy needed to preheat the component can also be used to generate cryptocurrency and thereby recoup at least part of the energy cost.

It can also be provided that is provided as the task of an energy management task of a building. For example, when connected to a building by the stationary charging station, the motor vehicle can perform the building's energy management task. It is then not necessary, for example, for a building-specific calculation unit to become active, since the task can be carried out by the processing unit of the motor vehicle. Thus, the building can be operated more energy efficient and the energy for the processing unit of the motor vehicle can be used to preheat the component.

It may also be provided that the task is to provide a search for the lowest price for the energy for the charging of the traction battery. For example, the processing unit can be used during the charging process to carry out the search for the lowest charge for the energy for the charging process.

Furthermore, it can be provided that a search for an undesired computer program is provided as the task. As a result, the processing unit can be used, for example, as a scanners. The search for the unwanted computer program can be done for example in the motor vehicle itself or in the connected charging station or in a building comprising the stationary charging station. To search for the unwanted computer program, the United processing unit, for example, a collection of unwanted computer programs can be provided, which then be compared with programs or data in the motor vehicle or a building. If there is a match between the database with the signatures of the unwanted programs and the program in the motor vehicle or the building, so the program can be removed or at least issued an indication of suspected viruses.

Preferably, it is provided that the task is provided by a vehicle-external server device. This makes it unnecessary, for example, that the task is always present in the vehicle itself. For example, the motor vehicle can be connected to the stationary charging station for charging and receive the task from the vehicle-external server device when detecting the preheating signal. The task can be received, for example, via the stationary charging station or else directly, for example wirelessly, from the vehicle-external server device. For example, the motor vehicle may request the task from the vehicle-external server device as a function of the preheat signal. For example, the motor vehicle may also request another task from the off-board server device if the task that was first processed is resolved. By the vehicle-external server device, the result of the task or the solution can be further processed. Thus, the motor vehicle can transmit the solution of the task to the vehicle-external server device.

Furthermore, it is preferably provided that a result of the solution attempt is offered for sale on a virtual marketplace. For example, a cryptocurrency generated by solving the task can be offered for sale on the virtual marketplace. The motor vehicle can be coupled with example directly to the virtual marketplace. The virtual marketplace can then be designed, for example, as a kind of stock exchange or auction platform.

Furthermore, it is preferably provided that the traction battery of the motor vehicle is preheated as the component. It is advantageous to preheat the traction battery, as this can be charged gently and the life of the traction battery is extended.

Furthermore, it is preferably provided that as the component, an interior of the motor vehicle is preheated. By preheating the interior, the motor vehicle can be preheated, for example, for a pending after charging ride for the future occupants.

The preheating of the component describes in particular a ge targeted heating of the component over a period of at least 1 min, in particular at least 5 min. The inven tion proper preheating thus takes longer in particular as a short increase in temperature by any arranged in an air duct known control unit, which is operated without the task provided, since known control devices usually change again after performing their function in a power saving mode.

By the preheating signal, in particular a cold component of the motor vehicle is preheated such that a Betriebstem temperature is achieved and / or a harmful cold start is avoided and / or a predetermined room climate is created.

The invention also relates to a motor vehicle. A motor vehicle according to the invention has an electric traction onsmotor, a traction battery and a processing unit. The vehicle is designed to:

- To be charged by a stationary charging station, in particular in the environment of the motor vehicle;

to detect a preheat signal;

to receive a computer-solvable task;

- durohführen a solution attempt the task with the processing unit during a state of charge depending on the preheat signal;

to supply waste heat generated by the solution attempt the processing unit to the component of the motor vehicle; and

- Preheat the component by the waste heat.

Advantageous embodiments of the method according to the invention are to be regarded as advantageous embodiments of the motor vehicle according to the invention. The subject components of the motor vehicle are each designed to carry out the respective method steps.

Further features of the invention will become apparent from the claims, the figure and the description of the figures.

Embodiments of the invention will be explained in more detail with reference to a schematic drawing.

The Fig. Shows a schematic plan view of an example Ausfüh insurance of a motor vehicle according to the invention with a processing unit which is connected to a stationary charging station.

So, the Fig. Shows a motor vehicle 1 in plan view. The motor vehicle 1 has an electric traction motor 2, a traction battery 3 and a processing unit 4. The traction motor 2 is powered by the traction battery 3 with energy. The motor vehicle 1 may have, in addition to the traction motor 2, other types of motors and be designed, for example, as a hybrid vehicle.

The processing unit 4 is designed, for example, as a calculation unit or evaluation unit. The processing unit 4 has, in particular, a processor and / or an application-specific integrated circuit (ASIC).

The processing unit 4 is connected according to the embodiment with a coolant supply line 5 and a coolant discharge line 6 to the traction battery 3.

Heat is transferred from the processing unit 4 to the traction battery 3 through the coolant supply line 5. Through the Kühlmittelabführleitung 6, the coolant, which has delivered the heat to the traction battery 3, processing unit 4 returned to Ver.

According to the embodiment, the traction battery 3 is formed as a component of the motor vehicle 1.

According to an embodiment, not shown, an interior 7 of the motor vehicle 1 is formed as a component. The interior 7 can be heated by waste heat of the processing unit 4. For this purpose, the processing unit 4 arranged in example in a supply air channel of the interior 7 sern In particular, it is provided that the component is heated by at least 0.1 ° C, preferably at least 1 ° C, by the waste heat.

The processing unit 4 is also connected to a communication unit 8 of the motor vehicle 1 according to the exemplary embodiment. The communication unit 8 is in particular designed to provide a wireless connection with a vehicle-external server device 9. The communication unit 8 may have, for example, an LTE module (LTE - long term evolution). In particular, the communication unit 8 is designed as a mobile data transmission device which can be connected to the server device 9 in a data-transmitting, wireless manner.

Furthermore, the motor vehicle 1 according to the embodiment example, a charging device 10. The charging device 10 is designed in particular as a high-voltage charging device. According to the exemplary embodiment, the charging device 10 is electrically connected to a stationary charging station 11. The charging station 11 is in turn connected to a public power grid. The charging device 10 may for example be connected to a charging cable of the charging station or may be connected inductively to the charging station. The traction battery 3 can therefore be wired and / or inductively charged by the charging station 11.

An embodiment of a method then proceeds in example as follows. The motor vehicle 1 is connected to the charging station 11 for charging, and the charging operation of the traction battery 3 is performed. Now it is intended to preheat the traction battery 3 and / or the interior 7 as a respective component of the motor vehicle 1. For this purpose, a preheating signal 12 is generated. The preheating signal 12 can be generated either in the motor vehicle 1 or outside the motor vehicle 1, for example by a mobile communication terminal become. The preheating signal 12 is then detected by the processing unit 4 processing. The processing unit 4 then requests a task 13 from the server device 9. The task 13 is here as a computer-solvable task and can be formed in example as a crypto currency number block, as energy management task or as a price search task or as a search for an unwanted computer program. The task 13 is then transmitted from the server device 9 to the processing unit 4 according to the embodiment.

The processing unit 4 then starts depending on the preheat signal 12 with a solution attempt of the task 13. The solution attempt can then, for example, consist of the crypto currency number block to determine a valid crypto currency number combination.

In carrying out the solution attempt of the task 13, waste heat is generated by the processing unit 4. The waste heat is then fed via the coolant supply line 5 to the traction battery 3. There, the traction battery 3 is then preheated by means of the waste heat. The coolant, which has already delivered the waste heat energy to the traction battery 3, is returned to the processing unit 4 via the coolant discharge line 6.

If the task 13 is successfully solved by the processing unit, ie if a result 14 is available, this result 14 is offered for sale on a virtual marketplace 15. For this purpose, the result 14 can for example be transmitted wirelessly from the processing unit 4 via the communication unit 8 to the marketplace 15.

By means of the method, the energy from the charging station 11 can therefore not only be used for preheating the component of the motor vehicle 1 be used, but also to perform a solution attempt of the task 13.

LIST OF REFERENCE NUMBERS

1 motor vehicle

2 traction motor

3 traction battery

4 processing unit

5 coolant supply line

6 coolant discharge line 7 interior

8 communication unit

9 server device

10 charging device

11 charging station

12 preheat signal

13 task

14 result

15 marketplace

Claims

claims

1. A method for preheating a component (3, 7) of an electric motor vehicle (1) with the following steps:

- Charging a traction battery (3) of the motor vehicle (1) by a stationary charging station (11);

- detecting a preheat signal (12);

- providing a computer-solvable task (13);

- Carrying out a solution attempt of the task (13) with a processing unit (4) of the motor vehicle (1) during the charging process depending on the preheating signal (12);

- Carrying a waste heat generated by the solution attempt by the processing unit (4) to the component (3, 7) of the motor vehicle (1); and

- Preheating of the component (3, 7) by the waste heat.

2. The method of claim 1, wherein

when the task (13) is to provide a crypto currency block.

3. The method according to claim 1 or 2, wherein

as the task (13) is provided an energy management task of a building.

A method according to any one of the preceding claims, wherein as the object (13) is provided a search for the lowest price of energy for the charging of the traction battery (3).

A method according to any one of the preceding claims, wherein as the object (13) a search for an undesired computer program is provided.

6. The method according to any one of the preceding claims, wherein the task (13) by an off-vehicle server device (9) is provided.

7. The method according to any one of the preceding claims, wherein a result of the solution attempt on a virtual marketplace (15) is offered for sale.

8. The method according to any one of the preceding claims, wherein as the component, the traction battery (3) of the motor vehicle (1) is preheated.

9. The method according to any one of the preceding claims, wherein as the component, an interior (7) of the motor vehicle (1) is preheated.

10. Motor vehicle (1) with an electric traction motor (2), a traction battery (3) and a processing unit (4), wherein the motor vehicle (1) is designed to:

to be charged by a stationary charging station (11);

to detect a preheat signal (12);

to receive a computer-solvable task (13);

- Perform a solution attempt the task (13) with the processing unit (4) during a state of charge depending on the preheat signal (12);

- Waste heat generated by the solution trial processing unit (4) to a component (3, 7) of the

To lead motor vehicle (1); and

- Preheat the component (3, 7) by the waste heat.