CN117199615A

CN117199615A - Power supply method based on battery heat energy and related device

Info

Publication number: CN117199615A
Application number: CN202311255274.0A
Authority: CN
Inventors: 黄进勇
Original assignee: Xiamen Hithium Energy Storage Technology Co Ltd
Current assignee: Xiamen Hithium Energy Storage Technology Co Ltd
Priority date: 2023-09-26
Filing date: 2023-09-26
Publication date: 2023-12-08

Abstract

The application provides a power supply method based on battery heat energy and a related device, wherein the method is applied to a control unit of a battery system, and the battery system comprises the control unit, a thermoelectric conversion unit, an energy storage unit and a plurality of first electric equipment; the method comprises the following steps: if the temperature of the target battery unit is determined to be greater than a first preset value, a first control signal is sent to the thermoelectric conversion unit so as to control the thermoelectric conversion unit to collect heat of the target battery unit and convert the heat into electric energy; transmitting a second control signal to the energy storage unit to control the energy storage unit to receive and store electric energy; acquiring a plurality of pieces of electricity consumption information which are in one-to-one correspondence with a plurality of first electric equipment; determining second electric equipment needing power supply in the first electric equipment according to the plurality of electric equipment information; determining the electricity demand of the second electric equipment; and outputting a third control signal to the energy storage unit according to the electricity consumption requirement, wherein the third control signal is used for controlling the energy storage unit to supply power to the second electric equipment according to the electricity consumption requirement.

Description

Power supply method based on battery heat energy and related device

Technical Field

The application belongs to the technical field of batteries, and particularly relates to a power supply method based on battery heat energy and a related device.

Background

At present, in the prior art, waste heat generated by a battery is generally dissipated and cooled by a heat dissipating device, so that the ambient temperature is increased, and heat energy is wasted. Some technical schemes utilize waste heat to supply heat to places needing heat, so that the waste heat can only be utilized in the scene needing heat supply at the current moment, and if the current scene does not need heat supply places, heat waste is caused.

Disclosure of Invention

The application provides a power supply method based on battery heat energy and a related device, so as to effectively utilize waste heat generated by a battery.

In a first aspect, the application provides a power supply method based on battery heat energy, which is applied to a control unit of a battery system, wherein the battery system comprises the control unit, a target battery unit, a thermoelectric conversion unit, an energy storage unit and a plurality of first electric equipment; the method comprises the following steps:

if the temperature of the target battery unit is determined to be greater than a first preset value, a first control signal is sent to the thermoelectric conversion unit, and the first control signal is used for controlling the thermoelectric conversion unit to collect heat of the target battery unit and convert the heat into electric energy;

Transmitting a second control signal to the energy storage unit, wherein the second control signal is used for controlling the energy storage unit to receive and store the electric energy;

acquiring a plurality of electricity consumption devices corresponding to the first electric equipment one by one;

determining a second electric equipment needing power supply from the plurality of first electric equipment according to the plurality of electric equipment;

determining the electricity demand of the second electric equipment;

and outputting a third control signal to the energy storage unit according to the electricity demand, wherein the third control signal is used for controlling the energy storage unit to supply power to the second electric equipment according to the electricity demand.

In a second aspect, the application provides a power supply device based on battery heat energy, which is applied to a control unit of a battery system, wherein the battery system comprises the control unit, a thermoelectric conversion unit, an energy storage unit and a plurality of first electric equipment; the device comprises:

the determining unit is used for determining that the temperature of the target battery unit is larger than a first preset value, and sending a first control signal to the thermoelectric conversion unit, wherein the first control signal is used for controlling the thermoelectric conversion unit to collect heat of the target battery unit and convert the heat into electric energy;

The output unit is used for outputting a second control signal to the energy storage unit, and the second control signal is used for controlling the energy storage unit to receive and store the electric energy;

the acquisition unit is used for acquiring a plurality of pieces of electricity consumption information corresponding to the plurality of first electric equipment one by one;

the determining unit is further used for determining a second electric equipment needing power supply in the plurality of first electric equipment according to the plurality of electric power consumption information; and determining the electricity demand of the second electric equipment;

the output unit is further configured to output a third control signal to the energy storage unit according to the electricity consumption requirement, where the third control signal is used to control the energy storage unit to supply power to the second electric device according to the electricity consumption requirement.

In a third aspect, the present application provides an electronic device comprising a processor, a memory, a communication interface, and one or more programs stored in the memory and configured to be executed by the processor, the programs comprising instructions for performing the steps of any of the first to third aspects of the present application.

In a fourth aspect, the present application provides a computer storage medium storing a computer program for electronic data exchange, wherein the computer program causes a computer to perform part or all of the steps as described in any one of the first to third aspects of the application.

Drawings

In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of a battery system according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of an electronic device according to an embodiment of the present application;

fig. 3 is a schematic flow chart of a power supply method based on battery thermal energy according to an embodiment of the present application;

fig. 4 is a schematic flow chart of a control method of an energy storage unit according to an embodiment of the present application;

FIG. 5 is a flow chart illustrating a method for adjusting the target thermoelectric conversion efficiency according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a power supply device based on battery thermal energy according to an embodiment of the present application.

Detailed Description

In order that those skilled in the art will better understand the present application, a technical solution in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

The terms first, second and the like in the description and in the claims and in the above-described figures are used for distinguishing between different objects and not necessarily for describing a sequential or chronological order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, system, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

Currently, there are two methods of generating sounding reference signals (sounding reference signal, SRS). One is memory addressing, in which parameters required for SRS signal generation are generated in advance and then stored in memory, and when needed, the parameters are retrieved. The other is real-time calculation, and after SRS scheduling is generated, all parameters required for generating SRS signals are directly calculated. However, in the prior art, only one SRS signal acquisition mode is generally used, and the method has no pertinence to various SRS signals.

In order to solve the problems, the embodiment of the application provides a power supply method based on battery heat energy. The method can be applied to the scene of converting the waste heat of the battery into electric energy to supply power to the electric equipment. Sending a first control signal to the thermoelectric conversion unit to control the thermoelectric conversion unit to collect heat of the target battery unit and convert the heat into electric energy by determining that the temperature of the target battery unit is greater than a first preset value; transmitting a second control signal to the energy storage unit to control the energy storage unit to receive and store the electric energy; acquiring a plurality of electricity consumption devices corresponding to the first electric equipment one by one; determining a second electric equipment needing power supply from the plurality of first electric equipment according to the plurality of electric equipment; determining the electricity demand of the second electric equipment; and outputting a third control signal to the energy storage unit according to the electricity demand, wherein the third control signal is used for controlling the energy storage unit to supply power to the second electric equipment according to the electricity demand. The present solution may be applied to a variety of scenarios, including but not limited to the application scenarios mentioned above.

The system architecture to which the embodiments of the present application relate is described below.

The present application further provides a battery system 100, referring to fig. 1, where the battery system 100 includes the control unit 110, the target battery unit 130, the sensor unit 120, the thermoelectric conversion unit 140, the energy storage unit 150, and a plurality of first electric devices (e.g., the first electric device 1 to the first electric device n in fig. 1). The sensor unit 120 is used to detect the temperature of the target battery unit 130; the control unit 110 is configured to determine whether the temperature is greater than a first preset value, and if the temperature is greater than the first preset value, send a first control signal to the thermoelectric conversion unit 140, and send a second control signal to the energy storage unit 150; the heat energy conversion unit is configured to collect heat of the target battery unit 130 and convert the heat into electric energy when receiving a first control signal; the energy storage unit 150 is configured to receive and store the electric energy; the control unit 110 is further configured to collect power utilization information corresponding to the plurality of first power utilization devices, determine a second power utilization device that needs to be powered from the plurality of first power utilization devices according to the plurality of power utilization information, determine a power utilization requirement of the second power utilization device, and output a third control signal to the energy storage unit 150 according to the power utilization requirement; the energy storage unit 150 is further configured to supply power to the second electric device according to the power demand when the third control signal is received.

The present application also provides an electronic device 10, as shown in FIG. 2, comprising at least one processor (processor) 11; a display screen 12; and a memory (memory) 13, which may also include a communication interface (Communications Interface) 15 and a bus 14. The processor 11, the display 12, the memory 13 and the communication interface 15 may communicate with each other via a bus 14. The display 12 is configured to display a user guidance interface preset in the initial setting mode. The communication interface 15 may transmit information. The processor 11 may call logic instructions in the memory 13 to perform the methods of the above embodiments.

Alternatively, the electronic device 10 may be a mobile electronic device, or may be an electronic device or other device, which is not limited in uniqueness herein.

Further, the logic instructions in the memory 13 described above may be implemented in the form of software functional units and may be stored in a computer readable storage medium when sold or used as a stand alone product.

The memory 13, as a kind of computer readable storage medium, may be configured to store a software program, a computer executable program, such as program instructions or modules corresponding to the methods in the embodiments of the present disclosure. The processor 11 executes functional applications and data processing, i.e. implements the methods of the above embodiments, by running software programs, instructions or modules stored in the memory 13.

The memory 13 may include a storage program area that may store an operating system, at least one application program required for functions, and a storage data area; the storage data area may store data created according to the use of the electronic device 10, and the like. Further, the memory 13 may include a high-speed random access memory, and may also include a nonvolatile memory. For example, a plurality of media capable of storing program codes such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or a transitory storage medium may be used.

The specific method is described in detail below.

Referring to fig. 3, the application further provides a power supply method based on battery heat energy, which is applied to a control unit of a battery system, wherein the battery system comprises the control unit, a target battery unit, a thermoelectric conversion unit, an energy storage unit and a plurality of first electric equipment; the method comprises the following steps:

step 201, sending a first control signal to the thermoelectric conversion unit when the temperature of the target battery unit is determined to be greater than a first preset value.

The first control signal is used for controlling the thermoelectric conversion unit to collect heat of the target battery unit and convert the heat into electric energy.

In a specific implementation, if the temperature of the target battery unit is too low, for example, is lower than room temperature, the waste heat of the target battery unit cannot be used to convert the electric energy, so that when it is required to determine that the temperature of the target battery unit is higher than a first preset value, a thermoelectric conversion process is performed to convert the waste heat of the target battery unit into the electric energy for storage, that is, a first control signal is sent to the thermoelectric conversion unit to control the thermoelectric conversion unit to collect the waste heat generated by the target battery unit.

Step 202, a second control signal is sent to the energy storage unit.

The second control signal is used for controlling the energy storage unit to receive and store the electric energy.

In a specific implementation, the first control signal is sent to the thermoelectric conversion unit, and meanwhile, the second control signal is also sent to the energy storage unit, so that the energy storage unit is started, and the electric energy is received and stored by the energy storage unit.

Step 203, a plurality of electricity consumption information corresponding to the plurality of first electric devices one by one is obtained.

In a specific implementation, the control unit collects power consumption information of each first electric device, and each power consumption information comprises a power supply voltage and a rated voltage of the corresponding first electric device, wherein the power supply voltage is the voltage of the target battery unit currently supplied to the first electric device.

And 204, determining a second electric equipment needing to be powered in the first electric equipment according to the plurality of electric equipment.

In one possible embodiment, the determining, according to the plurality of power consumption information, a second power consumption device that needs to be powered in the plurality of first power consumption devices includes: the following processing is performed for each piece of electricity consumption information: comparing the power supply voltage of the current power utilization information with the rated voltage; if the power supply voltage is smaller than the rated voltage, calculating the absolute value of the difference value between the power supply voltage and the rated voltage; and if the absolute value of the difference value is larger than a second preset value, determining that the first electric equipment corresponding to the current electricity utilization information is the second electric equipment.

In a specific implementation, the embodiment determines whether the corresponding first electric equipment needs to be powered on based on each piece of electricity consumption information, specifically, comparing the power supply voltage in the current electricity consumption information with the rated voltage, and when the power supply voltage is smaller than the rated voltage, indicating that the power supply voltage of the current first electric equipment is insufficient and further power supply is needed; therefore, continuously calculating the absolute value of the difference between the power supply voltage and the rated voltage to obtain the complementary voltage required by the current first electric equipment; and when the supplementary voltage is larger than a second preset value, determining that the current first electric equipment is the second electric equipment.

It can be seen that in this embodiment, when the power supplied by the target battery is full, the undervoltage second electric device is calculated, so as to provide support for the subsequent auxiliary power supply through the energy storage unit, thereby improving the reliability of the system.

In one possible embodiment, after the outputting of the third control signal to the energy storage unit according to the electricity demand, the method further includes: determining the current energy storage stage of the energy storage unit, wherein the energy storage stage is used for indicating the percentage of the electric quantity stored by the energy storage unit; determining a heat level associated with the energy storage phase, the heat level being indicative of a current heat rate of the target battery cell; and controlling the load power of the target battery unit according to the heating level.

In specific implementation, a plurality of energy storage stages are set for the energy storage unit, each energy storage stage corresponds to a certain percentage of stored electric quantity, for example, three energy storage stages are set, the first energy storage stage is 0-50% of electric quantity, the second energy storage stage is 51-80% of electric quantity, the third energy storage stage is 81-90% of electric quantity, and the energy storage stages can be set according to actual conditions specifically, and are not limited herein. After determining the current energy storage stage, inquiring the heating levels corresponding to the energy storage stage, wherein each heating level corresponds to a certain heating rate, for example, three heating levels are correspondingly set, the first heating level corresponds to 10 ℃/min, the second heating level corresponds to 5 ℃/min, and the third heating level corresponds to 1 ℃/min. And finally, inquiring the corresponding load power according to the heating level, and then adjusting the target battery unit to the load power.

It can be seen that, in this embodiment, the liability power of the target battery unit is adjusted in real time according to the electricity storage degree of the energy storage unit, so that the temperature of the target battery unit is controlled within a suitable range, and the reliability of the system is improved.

Step 205, determining the electricity consumption requirement of the second electric equipment.

And 206, outputting a third control signal to the energy storage unit according to the electricity consumption requirement.

The third control signal is used for controlling the energy storage unit to supply power to the second electric equipment according to the power consumption requirement.

In one possible embodiment, referring to fig. 4, the outputting, according to the electricity demand, a third control signal to the energy storage unit includes: step 2061, determining whether the energy storage unit can meet the electricity demand; step 2062, if the electric quantity can meet the electricity demand, directly outputting a third control signal to the energy storage unit; step 2063, if the electric quantity cannot meet the electricity demand, calculating a target thermoelectric conversion efficiency required to be achieved by the thermoelectric conversion unit when the electricity demand is met; step 2064 of adjusting the current first thermoelectric conversion efficiency conversion of the thermoelectric conversion unit to the target thermoelectric conversion efficiency; and step 2065, outputting a third control signal to the energy storage unit.

In a specific implementation, since the second electric equipment needs the energy storage unit to supplement voltage, after determining the electricity demand of the second electric equipment, it is necessary to predict whether the energy storage unit can meet the electricity demand, if so, a third control signal can be directly output to control the energy storage unit to directly supply power to the second electric equipment; if the power consumption requirement cannot be met, the target thermoelectric conversion efficiency required by continuous power supply is calculated, the first thermoelectric conversion efficiency of the thermoelectric conversion unit is adjusted to be the target thermoelectric conversion efficiency, and then a third control signal is output to control the energy storage unit to supply power to the second electric equipment.

It can be seen that in this embodiment, different power supply schemes are selected according to the power consumption requirement, so that the energy storage unit can meet the power consumption requirement of the second electric equipment, and the reliability of the system is improved.

In one possible embodiment, the determining whether the energy storage unit is capable of meeting the electricity demand includes: determining a current scene of the target battery unit, wherein the scene comprises a battery thermal runaway scene and a battery overload scene; if the battery thermal runaway scene is adopted, determining that the energy storage unit cannot meet the electricity demand; and if the battery overload scene is adopted, determining that the energy storage unit can meet the electricity demand.

In specific implementation, determining the current thermoelectric conversion efficiency of the thermoelectric conversion unit, and if the current thermoelectric rate of the thermoelectric conversion unit is smaller than the target thermoelectric conversion efficiency, determining that the energy storage unit cannot meet the electricity utilization requirement; and if the current thermoelectric rate of the thermoelectric conversion unit is greater than or equal to the target thermoelectric conversion efficiency, determining that the energy storage unit meets the electricity utilization requirement.

It can be seen that in this embodiment, whether the power consumption requirement is satisfied is determined through different scenes, so that the reliability of the system is improved.

In one possible embodiment, referring to fig. 5, the thermoelectric conversion unit includes a plurality of heat absorbing sub-units for connection with hot ends of the thermoelectric conversion unit and a plurality of cooling sub-units for connection with cold ends of the thermoelectric conversion unit; the adjusting the current first thermoelectric conversion efficiency conversion of the thermoelectric conversion unit to the target thermoelectric conversion efficiency includes: step 20641, inquiring a first device combination corresponding to the target thermal conversion efficiency from a preset first comparison table, wherein a plurality of device combinations are stored in the first comparison table, each device combination comprises a corresponding heat absorption subunit and a cooling subunit, the plurality of device combinations comprise the first device combination, and the first device combination comprises a first heat absorption subunit and a second cooling subunit; and 20642, switching the hot end of the thermoelectric conversion unit to a first heat absorption subunit, and switching the cold end to a first cooling subunit conversion efficiency.

In particular implementations, the factors that affect thermoelectric conversion efficiency include two factors, (1) electron diffusion from the hot side to the cold side. However, the diffusion here is not caused by a concentration gradient (because the concentration of electrons in the metal is independent of temperature), but rather by electrons at the hot end having a higher energy and velocity. Obviously, if this effect is dominant, the coefficient of the Seebeck effect thus produced should be negative. (2) Influence of electron free path. Since metals, although many free electrons are present, contribute to conduction, mainly so-called conduction electrons in the range of 2kT around the Fermi level. The mean free path of these electrons is related to the conditions subject to scattering (phonon scattering, impurity and defect scattering) and the energy density variation with energy.

Accordingly, the thermoelectric conversion efficiency may be improved by increasing the temperature difference between the cold side and the hot side, whereas if the thermoelectric conversion efficiency needs to be reduced, the temperature difference between the cold side and the hot side may be reduced. Based on this, the present embodiment calculates the heat conversion efficiency that can be achieved by combining each of the heat absorbing sub-units with the cooling sub-unit by collecting a large amount of the operation data of the battery system in advance, and the heat conversion efficiency can be obtained by calculating the average value based on the plurality of sets of data. And then generating a first comparison table according to the association relation between the combination of each heat absorption subunit and the cooling subunit and the heat conversion efficiency. And when the battery system actually works, inquiring the first comparison table according to the determined target thermoelectric conversion efficiency to obtain a first heat absorption subunit and a first cooling subunit which correspond to the target thermoelectric conversion efficiency, wherein the temperature difference and the Seebeck coefficient between the two subunits can enable the thermoelectric conversion efficiency to reach the target thermoelectric conversion efficiency.

In addition, the conversion efficiency can be further realized by arranging a plurality of different thermal electronic units in the thermoelectric conversion unit and switching corresponding thermal sub-units according to the target heat quantity difference, so that the aim of adjusting the temperature difference between the cold end and the hot end of the thermoelectric conversion module can be fulfilled. Specifically, the thermoelectric conversion unit comprises a plurality of thermoelectric units, and each thermoelectric unit corresponds to one heat quantity difference; the adjusting the current first thermoelectric conversion efficiency conversion of the thermoelectric conversion unit to the target thermoelectric conversion efficiency includes: inquiring a second equipment combination corresponding to the target thermal conversion efficiency from a preset second comparison table, wherein a plurality of equipment combinations are stored in the second comparison table, each equipment combination comprises a corresponding hot electron unit, the plurality of equipment combinations comprise the second equipment combination, and the second equipment combination comprises a first hot electron unit; and switching the connection of the first hot electron unit and the battery unit. Each thermionic unit comprises a fixed heat absorbing subunit and a cooling subunit, i.e. there is a fixed thermoelectric conversion efficiency for each thermionic unit.

It can be seen that in this embodiment, the thermoelectric conversion rate can be adjusted by adjusting the temperature difference between the cold end and the hot end of the thermoelectric conversion module, so as to improve the controllability and reliability of the battery system.

In one possible embodiment, the calculating the target thermoelectric conversion efficiency satisfying the electricity demand according to the electricity demand includes: determining a first voltage required by the second electric equipment; calculating first power consumption according to the first voltage; calculating a first electric quantity in unit time according to the first power consumption; and calculating the thermoelectric conversion efficiency required by the thermoelectric conversion unit for converting the first electric quantity to obtain the target thermoelectric conversion efficiency.

In the specific implementation, first electric quantity of the second electric equipment in unit time is calculated based on first voltage required by the second electric equipment, and after the first electric quantity is obtained, reverse pushing can be performed through a Seebeck effect, so that the target thermoelectric conversion efficiency is calculated. In addition, a third corresponding relation between the electricity consumption and the thermoelectric conversion efficiency can be stored in advance, and the target thermoelectric conversion efficiency can be directly obtained by inquiring the third corresponding relation after the first electricity consumption is determined.

When the power supplied by the target battery is full, the power is supplied in an auxiliary mode through the energy storage unit, and the load of the target battery is reduced.

In summary, in the embodiment of the present application, by determining that the temperature of the target battery unit is greater than the first preset value, a first control signal is sent to the thermoelectric conversion unit, so as to control the thermoelectric conversion unit to collect the heat of the target battery unit and convert the heat into electric energy; transmitting a second control signal to the energy storage unit to control the energy storage unit to receive and store the electric energy; acquiring a plurality of electricity consumption devices corresponding to the first electric equipment one by one; determining a second electric equipment needing power supply from the plurality of first electric equipment according to the plurality of electric equipment; determining the electricity demand of the second electric equipment; and outputting a third control signal to the energy storage unit according to the electricity demand, wherein the third control signal is used for controlling the energy storage unit to supply power to the second electric equipment according to the electricity demand. In this way, waste heat generated by the battery can be effectively utilized, and a standby power supply is improved for the battery system.

The foregoing description of the embodiments of the present application has been presented primarily in terms of a method-side implementation. It will be appreciated that the mobile electronic device, in order to achieve the above-described functionality, comprises corresponding hardware structures and/or software modules that perform the respective functions. Those of skill in the art will readily appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is implemented as hardware or computer software driven hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

The embodiment of the application can divide the functional units of the electronic device according to the method example, for example, each functional unit can be divided corresponding to each function, and two or more functions can be integrated in one processing unit. The integrated units may be implemented in hardware or in software functional units. It should be noted that, in the embodiment of the present application, the division of the units is schematic, which is merely a logic function division, and other division manners may be implemented in actual practice.

Referring to fig. 6, the present application further provides a power supply device 60 based on battery thermal energy, which is applied to a control unit of a battery system, wherein the battery system includes the control unit, a thermoelectric conversion unit, an energy storage unit and a plurality of first electric devices; the device comprises:

a determining unit 61, configured to determine that the temperature of the target battery unit is greater than a first preset value, and send a first control signal to the thermoelectric conversion unit, where the first control signal is used to control the thermoelectric conversion unit to collect heat of the target battery unit and convert the heat into electric energy;

an output unit 62 for outputting a second control signal to the energy storage unit, the second control signal being for controlling the energy storage unit to receive and store the electric energy;

an obtaining unit 63, configured to obtain a plurality of electricity consumption devices corresponding to the plurality of first electric devices one by one;

the determining unit 61 is further configured to determine, according to the plurality of power consumption information, a second power consumption device that needs to be powered from the plurality of first power consumption devices; and determining the electricity demand of the second electric equipment;

the output unit 62 is further configured to output a third control signal to the energy storage unit according to the electricity consumption requirement, where the third control signal is used to control the energy storage unit to supply power to the second electric device according to the electricity consumption requirement.

It can be seen that, in this embodiment, by determining that the temperature of the target battery unit is greater than the first preset value, a first control signal is sent to the thermoelectric conversion unit to control the thermoelectric conversion unit to collect the heat of the target battery unit and convert the heat into electric energy; transmitting a second control signal to the energy storage unit to control the energy storage unit to receive and store the electric energy; acquiring a plurality of electricity consumption devices corresponding to the first electric equipment one by one; determining a second electric equipment needing power supply from the plurality of first electric equipment according to the plurality of electric equipment; determining the electricity demand of the second electric equipment; and outputting a third control signal to the energy storage unit according to the electricity demand, wherein the third control signal is used for controlling the energy storage unit to supply power to the second electric equipment according to the electricity demand. In this way, waste heat generated by the battery can be effectively utilized, and a standby power supply is improved for the battery system.

In one possible embodiment, the third control signal includes a fourth control signal and a fifth control signal; in the aspect of outputting the third control signal to the energy storage unit according to the electricity demand, the output unit 62 is specifically configured to: predicting whether the electric quantity of the energy storage unit can meet the electricity demand; if the electric quantity can meet the electricity demand, directly outputting a fourth control signal to the energy storage unit, wherein the fourth control signal is used for indicating the thermoelectric conversion unit to collect the heat of the target battery unit and convert the heat into electric energy; if the electric quantity can not meet the electricity consumption requirement, calculating target thermoelectric conversion efficiency meeting the electricity consumption requirement according to the electricity consumption requirement; and adjusting the current first thermoelectric conversion efficiency conversion of the thermoelectric conversion unit to the target thermoelectric conversion efficiency; and outputting a fifth control signal to the energy storage unit, the fifth control signal being for.

In one possible embodiment, the aspect of predicting whether the electricity quantity of the energy storage unit can meet the electricity demand, the output unit 62 is specifically configured to: determining a current scene of the target battery unit, wherein the scene comprises a battery thermal runaway scene and a battery overload scene; if the battery thermal runaway scene is adopted, determining that the energy storage unit cannot meet the electricity demand; and if the battery overload scene is adopted, determining that the energy storage unit can meet the electricity demand.

In one possible embodiment, the thermoelectric conversion unit comprises a heat absorbing sub-unit and a cooling sub-unit respectively arranged at the hot side and the cold side of the thermoelectric conversion unit; the adjustment of the current first thermoelectric conversion efficiency conversion of the thermoelectric conversion unit to the target thermoelectric conversion efficiency is an invention, and the output unit 62 is specifically configured to: determining a target heat quantity difference corresponding to the target heat conversion efficiency; switching a heat absorption subunit and a cooling subunit which are connected with the electrothermal conversion module according to the target heat quantity difference; alternatively, the thermionic cells are switched according to the target thermal energy difference, each thermionic cell corresponding to a different thermoelectric conversion rate.

In one possible embodiment, the aspect of calculating the target thermoelectric conversion efficiency satisfying the electricity demand according to the electricity demand, the output unit 62 is specifically configured to: determining a first voltage required by the second electric equipment; calculating first power consumption according to the first voltage; calculating a first electric quantity in unit time according to the first power consumption; and calculating the thermoelectric conversion efficiency required by the thermoelectric conversion unit for converting the first electric quantity to obtain the target thermoelectric conversion efficiency.

In one possible embodiment, each piece of electricity usage includes a supply voltage and a nominal voltage; the aspect of determining, according to the plurality of power consumption information, a second power consumption device that needs to be powered from the plurality of first power consumption devices, where the determining unit 61 is specifically configured to: the following processing is performed for each piece of electricity consumption information: comparing the power supply voltage of the current power utilization information with the rated voltage; if the power supply voltage is smaller than the rated voltage, calculating the absolute value of the difference value between the power supply voltage and the rated voltage; and if the absolute value of the difference value is larger than a second preset value, determining that the first electric equipment corresponding to the current electricity utilization information is the second electric equipment.

In one possible embodiment, after the aspect of outputting the third control signal to the energy storage unit according to the electricity demand, the apparatus further includes:

the determining unit 61 is further configured to determine a current energy storage phase of the energy storage unit, where the energy storage phase is used to indicate a percentage of the electric quantity stored by the energy storage unit; and determining a heat level associated with the energy storage phase, the heat level being indicative of a current heat rate of the target battery cell; and controlling the load power of the target battery unit according to the heat generation level.

The above embodiments may be implemented in whole or in part by software, hardware, firmware, or any other combination. When implemented in software, the above-described embodiments may be implemented in whole or in part in the form of a computer program product. The computer program product comprises one or more computer instructions or computer programs. When the computer instructions or computer program are loaded or executed on a computer, the processes or functions described in accordance with embodiments of the present application are produced in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website site, computer, server, or data center to another website site, computer, server, or data center by wired or wireless means. The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains one or more sets of available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium. The semiconductor medium may be a solid state disk.

The embodiment of the application also provides a computer storage medium, wherein the computer storage medium stores a computer program for electronic data exchange, and the computer program makes a computer execute part or all of the steps of any one of the above method embodiments, and the computer includes an electronic device.

Embodiments of the present application also provide a computer program product comprising a non-transitory computer-readable storage medium storing a computer program operable to cause a computer to perform part or all of the steps of any one of the methods described in the method embodiments above. The computer program product may be a software installation package, said computer comprising an electronic device.

It should be understood that, in various embodiments of the present application, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present application.

In the several embodiments provided in the present application, it should be understood that the disclosed method, apparatus and system may be implemented in other manners. For example, the device embodiments described above are merely illustrative; for example, the division of the units is only one logic function division, and other division modes can be adopted in actual implementation; for example, multiple units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may be physically included separately, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in hardware plus software functional units.

The integrated units implemented in the form of software functional units described above may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium, and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: u disk, removable hard disk, magnetic disk, optical disk, volatile memory or nonvolatile memory. The nonvolatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. The volatile memory may be random access memory (random access memory, RAM) which acts as an external cache. By way of example but not limitation, many forms of random access memory (random access memory, RAM) are available, such as Static RAM (SRAM), dynamic Random Access Memory (DRAM), synchronous Dynamic Random Access Memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced Synchronous Dynamic Random Access Memory (ESDRAM), synchronous Link DRAM (SLDRAM), and direct memory bus RAM (DR RAM). Etc. various media in which program code may be stored.

Although the present invention is disclosed above, the present invention is not limited thereto. Variations and modifications, including combinations of the different functions and implementation steps, as well as embodiments of the software and hardware, may be readily apparent to those skilled in the art without departing from the spirit and scope of the invention.

Claims

1. The power supply method based on the battery heat energy is characterized by being applied to a control unit of a battery system, wherein the battery system comprises the control unit, a target battery unit, a thermoelectric conversion unit, an energy storage unit and a plurality of first electric equipment; the method comprises the following steps:

determining the electricity demand of the second electric equipment;

2. The method of claim 1, wherein the outputting a third control signal to the energy storage unit according to the electricity demand comprises:

determining whether the energy storage unit can meet the electricity demand;

if the electric quantity can meet the electricity demand, directly outputting a third control signal to the energy storage unit;

if the electric quantity can not meet the electricity consumption requirement, calculating the target thermoelectric conversion efficiency which is required to be achieved by the thermoelectric conversion unit when the electricity consumption requirement is met; and adjusting the current first thermoelectric conversion efficiency conversion of the thermoelectric conversion unit to the target thermoelectric conversion efficiency; and outputting a third control signal to the energy storage unit.

3. The method of claim 2, wherein the thermoelectric conversion unit comprises a plurality of heat absorption subunits for connection to a hot side of the thermoelectric conversion unit and a plurality of cooling subunits for connection to a cold side of the thermoelectric conversion unit;

The adjusting the current first thermoelectric conversion efficiency conversion of the thermoelectric conversion unit to the target thermoelectric conversion efficiency includes:

inquiring a first equipment combination corresponding to the target thermal conversion efficiency from a preset first comparison table, wherein a plurality of equipment combinations are stored in the first comparison table, each equipment combination comprises a corresponding heat absorption subunit and a cooling subunit, the plurality of equipment combinations comprise the first equipment combination, and the first equipment combination comprises a first heat absorption subunit and a second cooling subunit;

and switching the hot end of the thermoelectric conversion unit into a first heat absorption subunit, and switching the cold end of the thermoelectric conversion unit into a first cooling subunit.

4. The method of claim 2, wherein the thermoelectric conversion unit comprises a plurality of thermionic units, each thermionic unit corresponding to one of the thermal differences;

inquiring a second equipment combination corresponding to the target thermal conversion efficiency from a preset second comparison table, wherein a plurality of equipment combinations are stored in the second comparison table, each equipment combination comprises a corresponding hot electron unit, the plurality of equipment combinations comprise the second equipment combination, and the second equipment combination comprises a first hot electron unit;

And switching the connection of the first hot electron unit and the battery unit.

5. The method of claim 2, wherein calculating a target thermoelectric conversion efficiency that meets the electricity demand from the electricity demand comprises:

determining a first voltage required by the second electric equipment;

calculating first power consumption according to the first voltage;

calculating a first electric quantity in unit time according to the first power consumption;

and calculating the thermoelectric conversion efficiency required by the thermoelectric conversion unit for converting the first electric quantity to obtain the target thermoelectric conversion efficiency.

6. The method of claim 1, wherein each piece of electricity usage information includes a supply voltage and a rated voltage;

the determining, according to the plurality of power consumption information, a second power consumption device that needs to be powered in the plurality of first power consumption devices includes:

the following processing is performed for each piece of electricity consumption information:

comparing the power supply voltage of the current power utilization information with the rated voltage;

if the power supply voltage is smaller than the rated voltage, calculating the absolute value of the difference value between the power supply voltage and the rated voltage;

and if the absolute value of the difference value is larger than a second preset value, determining that the first electric equipment corresponding to the current electricity utilization information is the second electric equipment.

7. The method of claim 6, wherein after the outputting of the third control signal to the energy storage unit according to the electricity demand, the method further comprises:

determining the current energy storage stage of the energy storage unit, wherein the energy storage stage is used for indicating the percentage of the electric quantity stored by the energy storage unit;

determining a heat level associated with the energy storage phase, the heat level being indicative of a heat rate that needs to be adjusted for the target battery cell;

and controlling the load power of the target battery unit according to the heating level.

8. The power supply device based on the battery heat energy is characterized by being applied to a control unit of a battery system, wherein the battery system comprises the control unit, a thermoelectric conversion unit, an energy storage unit and a plurality of first electric equipment; the device comprises:

9. An electronic device comprising a processor, a memory, a communication interface, and one or more programs stored in the memory and configured to be executed by the processor, the programs comprising instructions for performing the steps in the method of any of claims 1-7.

10. A computer-readable storage medium, characterized in that a computer program for electronic data exchange is stored, wherein the computer program causes a computer to execute the instructions of the steps in the method according to any one of claims 1-7.