CN118061805A - Motor control device, method and apparatus having battery management capability - Google Patents
Motor control device, method and apparatus having battery management capability Download PDFInfo
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- CN118061805A CN118061805A CN202410035527.1A CN202410035527A CN118061805A CN 118061805 A CN118061805 A CN 118061805A CN 202410035527 A CN202410035527 A CN 202410035527A CN 118061805 A CN118061805 A CN 118061805A
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Abstract
The present disclosure relates to a battery management-capable motor control apparatus, method and device. Relates to the field of electronic circuits, and solves the problem of high implementation cost of a power battery control scheme. The apparatus includes: the motor controller also comprises an electronic contactor; and the positive stage of the battery is connected into the motor controller through the electronic contactor. The technical scheme provided by the disclosure is suitable for a battery management system, and a battery control scheme with low cost and high timeliness is realized.
Description
Technical Field
The present disclosure relates to the field of electronic circuits, and in particular, to a battery management-capable motor control apparatus, method, and device.
Background
In order to effectively control the power battery, a contactor or a relay is usually integrated in a battery pack of the power battery as a switch for controlling the battery current, and when the battery is charged or discharged, the connection between the battery pack and other electrical systems is opened or closed according to the instruction of a vehicle control system. And meanwhile, the battery current is detected through a current detection element integrated with or independent of the battery pack so as to monitor the working state of the battery.
The power cell control scheme is costly to implement due to the integrated contactors or relays required in the battery pack and the dedicated current sensing elements required.
Disclosure of Invention
To overcome the problems in the related art, the present disclosure provides a motor control apparatus, method and device having battery management capability. The battery pack does not need to integrate a switch, a special current detection element is omitted, the monitoring and the management of the battery can be realized, and the problem of high implementation cost of a power battery control scheme is solved.
According to a first aspect of embodiments of the present disclosure, there is provided a motor control apparatus having battery management capability, including a motor controller, characterized in that the motor control apparatus having battery management capability further includes an electronic contactor;
And the positive stage of the battery is connected into the motor controller through the electronic contactor.
Further, the electronic contactor is a Metal Oxide Semiconductor Field Effect Transistor (MOSFET).
According to a second aspect of the embodiments of the present disclosure, there is provided a battery management-capable motor control method using the above battery management-capable motor control apparatus, including:
sampling the voltage when the electronic contactor is conducted to obtain a voltage sampling value;
And calculating the current value of the battery flowing through the electronic contactor according to the voltage sampling value.
Further, the step of sampling the voltage when the electronic contactor is turned on to obtain a voltage sampling value includes:
And when the electronic contactor is conducted, collecting the voltage between the drain electrode and the source electrode of the electronic contactor as a voltage sampling value.
Further, the method further comprises:
detecting and storing calibration parameters of different voltage values of the electronic contactor and actual current of the electronic contactor at room temperature;
And detecting and storing the temperature coefficients corresponding to the current values of the electronic contactor at different temperatures.
Further, the step of calculating a battery current value flowing through the electronic contactor according to the voltage sampling value includes:
Acquiring a temperature value of the electronic contactor;
acquiring corresponding calibration parameters according to the voltage sampling values;
acquiring a corresponding temperature coefficient according to the temperature value of the electronic contactor;
And calculating the battery current value according to the voltage sampling value, the calibration parameter and the temperature coefficient.
Further, the method further comprises:
Generating state of charge (SOC) information of the battery according to the battery current value;
And synchronizing the SOC information to a battery pack of the battery through CAN communication.
According to a third aspect of the embodiments of the present disclosure, there is provided a motor control apparatus having battery management capability, adapted to the above motor control device having battery management capability, the apparatus comprising:
the voltage sampling module is used for sampling the voltage when the electronic contactor is conducted to obtain a voltage sampling value;
and the current calculation module is used for calculating the current value of the battery flowing through the electronic contactor according to the voltage sampling value.
Further, the device further comprises:
the first parameter management module is used for detecting and storing calibration parameters of different voltage values of the electronic contactor and actual current of the electronic contactor at room temperature;
And the second parameter management module is used for detecting and storing the temperature coefficients corresponding to the current values of the electronic contactor at different temperatures.
Further, the current calculation module includes:
the temperature detection sub-module is used for acquiring the temperature value of the electronic contactor;
The first parameter acquisition sub-module is used for acquiring corresponding calibration parameters according to the voltage sampling value;
the second parameter acquisition submodule is used for acquiring a corresponding temperature coefficient according to the temperature value of the electronic contactor;
And the calculating sub-module is used for calculating the battery current value according to the voltage sampling value, the calibration parameter and the temperature coefficient.
The technical scheme provided by the embodiment of the disclosure can comprise the following beneficial effects: an electronic contactor is arranged in the motor control equipment, and the positive stage of the battery is connected into the motor controller through the electronic contactor. Electronic switches such as contactors or relays are not required to be integrated in a battery pack of the battery, and manufacturing cost of the battery is reduced. And the battery current can be calculated through the electronic contactor without adding a special current detection element, so that the realization cost of the control system is further saved. The problem of the power battery control scheme implementation cost is high is solved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a schematic diagram showing a structure of a motor control apparatus having battery management capability according to an exemplary embodiment.
Fig. 2 is a schematic diagram showing a power board arrangement of a motor control apparatus having battery management capability according to an exemplary embodiment.
Fig. 3 is a flowchart illustrating a method of controlling a battery-management-capable motor according to an exemplary embodiment.
Fig. 4 is a flowchart illustrating yet another battery management-capable motor control method according to an exemplary embodiment.
Fig. 5 is a flowchart illustrating yet another battery management-capable motor control method according to an exemplary embodiment.
Fig. 6 is a block diagram illustrating a battery management capable motor control device according to an exemplary embodiment.
Fig. 7 is a block diagram illustrating yet another battery management enabled motor control device according to an exemplary embodiment.
Fig. 8 is a schematic diagram of a structure of a current calculation module 602, according to an example embodiment.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the invention. Rather, they are merely examples of apparatus and methods consistent with aspects of the invention as detailed in the accompanying claims.
In a battery system, for safety reasons, a contactor or a relay is often required to realize the on-off of the output direct current, and an additional current detection element is also required, so that the implementation cost of the power battery control scheme is high.
In order to solve the above problems, embodiments of the present disclosure provide a motor control apparatus, method, and device having a battery management capability. The electronic contactor (serving as an electronic switch) is integrated into the circuit design of the motor controller, an additional current detection element is not needed, the on-off function of the contactor or the relay in the battery system can be realized, and meanwhile, the estimated current can be utilized for battery protection and state quantity estimation, so that the implementation cost of the battery control system is reduced, and the problem of high implementation cost of a power battery control scheme is solved.
An exemplary embodiment of the present disclosure provides a motor control apparatus having a battery management capability, the structure of which is shown in fig. 1, including:
A motor controller 101.
The battery management capable motor control device further includes an electronic contactor 102;
The positive stage of the battery 103 is connected to the motor controller 101 through the electronic contactor 102.
Further, the electronic contactor is a MOSFET.
The MOSFET uses the gate voltage to control the current between the source and the drain, and in the on state, a certain voltage difference exists between the drain and the source of the MOSFET, thereby generating a current.
The current of the MOSFET is also affected by other factors such as temperature, so that the operating state and current of the MOSFET need to be determined according to the application environment.
As shown in fig. 2, a power board arrangement using the above-described motor control apparatus having battery management capability is provided, on which an H-bridge inverter, an electronic contactor, and a power thermistor (NTC) as a motor controller are distributed.
An exemplary embodiment of the present disclosure provides a method for controlling a motor with battery management capability, where the method for monitoring a battery current in real time by using the motor control device with battery management capability provided by the embodiment of the present invention, a specific flow is shown in fig. 3, and includes
Step 301, detecting and saving calibration parameters of different voltage values of the electronic contactor and actual current of the electronic contactor at room temperature.
In the step, a detection environment at room temperature (such as 25 ℃) is built off line, different voltage values of the sampled electronic contactor and corresponding calibration parameters K of actual current are detected in the detection environment, and the voltage values, the current values, the values of K and the association relation are stored. Preferably, the calibration parameters can be stored as a calibration parameter table for subsequent inquiry.
Preferably, in the detection calibration, a plurality of discontinuous current values are detected and stored as current points. The current point can be calibrated according to the step length of 5-10% rated current.
And 302, detecting and storing temperature coefficients corresponding to the current values of the electronic contactor at different temperatures.
In this step, for each stored current value detected in step 301, the temperature coefficient M of the electronic contactor corresponding to the current value at different temperatures is further detected, and the current value, the temperature value, the value of M, and the association relation are stored. Preferably, the temperature coefficient table can be stored for subsequent inquiry.
For example, a temperature coefficient M relation table of different temperature points (25-100 ℃) and voltage sampling values under fixed current points is built off line.
Step 303, sampling the voltage when the electronic contactor is turned on, and obtaining a voltage sampling value.
In the step, when the electronic contactor is conducted, the voltage between the drain electrode and the source electrode of the electronic contactor is collected as a voltage sampling value.
And step 304, calculating the value of the battery current flowing through the electronic contactor according to the voltage sampling value.
In the step, after the voltage sampling value is obtained, the stored calibration parameter and temperature coefficient data are combined to obtain the calibration parameter and temperature coefficient matched with the current environment, and then the battery current value is calculated.
For example, the calibration parameter K and the temperature coefficient M are obtained by looking up a table according to the temperature and the DS voltage sampling value of the MOS tube, and the battery current value is calculated.
An exemplary embodiment of the present disclosure further provides a method for controlling a motor having a battery management capability, wherein the method includes the steps of calculating a value of a battery current flowing through the electronic contactor according to a voltage sampling value as shown in fig. 4, including:
Step 401, acquiring a temperature value of the electronic contactor.
And step 402, acquiring corresponding calibration parameters according to the voltage sampling value.
Step 403, obtaining a corresponding temperature coefficient according to the temperature value of the electronic contactor.
And step 404, calculating the battery current value according to the voltage sampling value, the calibration parameter and the temperature coefficient.
An exemplary embodiment of the present disclosure further provides a method for controlling a motor having a battery management capability, where a flow of acquiring battery operation related information and notifying a battery pack using the method is shown in fig. 5, and the method includes:
step 501, generating SOC information of the battery according to the battery current value.
In this step, after the battery current value is obtained in real time, battery operation related information such as SOC information of the battery can be further calculated according to the battery current value.
Step 502, synchronizing the SOC information to a battery pack of the battery through CAN communication.
In the step, the generated SOC information is synchronized to the battery pack, so that the system performance and reliability are improved, and the service life of the battery is prolonged.
An exemplary embodiment of the present disclosure further provides a motor control apparatus having battery management capability, and using the motor control device having battery management capability provided by the embodiment of the present disclosure, the apparatus has a structure as shown in fig. 6, and includes:
The voltage sampling module 601 is configured to sample a voltage when the electronic contactor is turned on, so as to obtain a voltage sampling value;
And a current calculation module 602, configured to calculate a battery current value flowing through the electronic contactor according to the voltage sampling value.
Further, as shown in fig. 7, the apparatus further includes:
a first parameter management module 603, configured to detect and store calibration parameters of different voltage values of the electronic contactor and actual current of the electronic contactor at room temperature;
The second parameter management module 604 is configured to detect and store temperature coefficients corresponding to respective current values of the electronic contactor at different temperatures.
Further, as shown in fig. 8, the current calculation module 602 includes:
A temperature detection sub-module 801, configured to obtain a temperature value of the electronic contactor;
A first parameter obtaining sub-module 802, configured to obtain a corresponding calibration parameter according to the voltage sampling value;
a second parameter obtaining sub-module 803, configured to obtain a corresponding temperature coefficient according to the temperature value of the electronic contactor;
And the calculating sub-module 804 is configured to calculate the battery current value according to the voltage sampling value, the calibration parameter and the temperature coefficient.
The specific manner in which the various modules perform the operations in the apparatus of the above embodiments have been described in detail in connection with the embodiments of the method, and will not be described in detail herein. The motor control device with the battery management capability can be integrated in a control system of battery equipment, and the control system realizes corresponding functions.
An exemplary embodiment of the present disclosure also provides a computer apparatus, including:
A processor;
A memory for storing processor-executable instructions;
Wherein the processor is configured to execute the battery management-capable motor control method provided by the embodiments of the present disclosure.
An exemplary embodiment of the present disclosure also provides a non-transitory computer-readable storage medium, which when executed by a processor of a mobile terminal, causes the mobile terminal to perform a battery management-capable motor control method, the method comprising:
sampling the voltage when the electronic contactor is conducted to obtain a voltage sampling value;
And calculating the current value of the battery flowing through the electronic contactor according to the voltage sampling value.
The embodiment of the disclosure provides a motor control device, a motor control method and a motor control device with battery management capability, wherein an electronic contactor is arranged in the motor control device, and the positive stage of a battery is connected into the motor controller through the electronic contactor.
Electronic switches such as contactors or relays are not required to be integrated in a battery pack of the battery, and manufacturing cost of the battery is reduced. And the battery current can be calculated through the electronic contactor without adding a special current detection element, so that the realization cost of the control system is further saved. The problem of the power battery control scheme implementation cost is high is solved.
The relation between the voltage sampling value of the MOSFET and the factors such as actual current and the temperature of the power board is obtained through the calibration of the experimental platform, and the current on the electronic switch is calculated according to the voltage sampling value and the temperature of the power board in operation, so that a current sensor special for current detection is not needed.
An electronic contactor serving as an electronic switch is added in the motor controller to replace a contactor or a relay used for switching on and off direct current in a battery system, a traditional current detection element is further simplified on the basis, and the current flowing through the electronic switch is calculated by detecting the voltage at two ends DS when a MOSFET of the electronic contactor is switched on.
And sampling the voltage when the electronic contactor is conducted to obtain a voltage sampling value, and then calculating the current value of the battery flowing through the electronic contactor according to the voltage sampling value. According to the sampled current, battery protection CAN be achieved, the SOC information of the battery CAN be calculated in real time, and the SOC information CAN be synchronized to the battery pack through CAN communication.
Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the application following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the application pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.
It is to be understood that the invention is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (10)
1. A motor control device with battery management capability, comprising a motor controller, characterized in that the motor control device further comprises an electronic contactor;
And the positive stage of the battery is connected into the motor controller through the electronic contactor.
2. The battery-management-capable motor control device of claim 1, wherein the electronic contactor is a metal oxide semiconductor field effect transistor MOSFET.
3. A battery management-enabled motor control method using the battery management-enabled motor control apparatus according to any one of claims 1 to 2, characterized by comprising:
sampling the voltage when the electronic contactor is conducted to obtain a voltage sampling value;
And calculating the current value of the battery flowing through the electronic contactor according to the voltage sampling value.
4. The battery management-enabled motor control method of claim 3, wherein the step of sampling the voltage at which the electronic contactor is turned on to obtain a voltage sample value comprises:
And when the electronic contactor is conducted, collecting the voltage between the drain electrode and the source electrode of the electronic contactor as a voltage sampling value.
5. The battery management-enabled motor control method of claim 3, further comprising:
detecting and storing calibration parameters of different voltage values of the electronic contactor and actual current of the electronic contactor at room temperature;
And detecting and storing the temperature coefficients corresponding to the current values of the electronic contactor at different temperatures.
6. The battery management-enabled motor control method according to claim 5, wherein the step of calculating a value of a battery current flowing through the electronic contactor from the voltage sampling value comprises:
Acquiring a temperature value of the electronic contactor;
acquiring corresponding calibration parameters according to the voltage sampling values;
acquiring a corresponding temperature coefficient according to the temperature value of the electronic contactor;
And calculating the battery current value according to the voltage sampling value, the calibration parameter and the temperature coefficient.
7. The battery management-enabled motor control method of claim 6, further comprising:
generating state of charge (SOC) information of the battery according to the battery current value;
And synchronizing the SOC information to a battery pack of the battery through CAN communication.
8. A battery management-capable motor control apparatus adapted to the battery management-capable motor control device according to any one of claims 1 to 2, characterized by comprising:
the voltage sampling module is used for sampling the voltage when the electronic contactor is conducted to obtain a voltage sampling value;
and the current calculation module is used for calculating the current value of the battery flowing through the electronic contactor according to the voltage sampling value.
9. The battery management-enabled motor control device of claim 8, further comprising:
the first parameter management module is used for detecting and storing calibration parameters of different voltage values of the electronic contactor and actual current of the electronic contactor at room temperature;
And the second parameter management module is used for detecting and storing the temperature coefficients corresponding to the current values of the electronic contactor at different temperatures.
10. The battery management-capable motor control device of claim 9, wherein the current calculation module comprises:
the temperature detection sub-module is used for acquiring the temperature value of the electronic contactor;
The first parameter acquisition sub-module is used for acquiring corresponding calibration parameters according to the voltage sampling value;
the second parameter acquisition submodule is used for acquiring a corresponding temperature coefficient according to the temperature value of the electronic contactor;
And the calculating sub-module is used for calculating the battery current value according to the voltage sampling value, the calibration parameter and the temperature coefficient.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410035527.1A CN118061805A (en) | 2024-01-10 | 2024-01-10 | Motor control device, method and apparatus having battery management capability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410035527.1A CN118061805A (en) | 2024-01-10 | 2024-01-10 | Motor control device, method and apparatus having battery management capability |
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| CN118061805A true CN118061805A (en) | 2024-05-24 |
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| CN202410035527.1A Pending CN118061805A (en) | 2024-01-10 | 2024-01-10 | Motor control device, method and apparatus having battery management capability |
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| CN (1) | CN118061805A (en) |
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