An intelligent power measurement method, device, equipment and storage medium

Abstract

The present invention discloses an intelligent power measurement method, device, equipment and storage medium. The method includes: an ammeter disposed in a battery pack monitors the signal states of a first pin and a second pin in real time; the ammeter determines the current charge-discharge mode of the battery pack by using the signal states of the first pin and the second pin; and the ammeter performs power measurement according to the current charge-discharge mode of the battery pack.

Description

Technical Field

[0001] The present invention relates to the technical field of electric quantity measurement, and in particular to an intelligent electric quantity measurement method, device, equipment and storage medium. Background Art

[0002] Existing on-board electric meters can only measure the charging and discharging power of the battery pack based on the direction of the current, which cannot meet the requirements of future commercial operations. Summary of the Invention

[0003] The technical problem solved by the solution provided in the embodiments of the present invention is that existing on-board electric meters can only measure the charging and discharging power of the battery pack according to the direction of the current, and cannot distinguish between plug-in charging, charging at a battery swap station, and energy recovery.

[0004] According to an embodiment of the present invention, a method for intelligently measuring electric quantity is provided, comprising:

[0005] An electric meter disposed in the battery pack monitors the signal status of the first pin and the signal status of the second pin in real time;

[0006] The electric meter determines the current charge and discharge mode of the battery pack by using the signal state of the first pin and the signal state of the second pin;

[0007] The electric meter measures the amount of electricity according to the current charge and discharge mode of the battery pack.

[0008] An intelligent power measurement device according to an embodiment of the present invention includes:

[0009] A monitoring unit, configured to monitor the signal status of the first pin and the signal status of the second pin in real time;

[0010] a determining unit, configured to determine a current charge and discharge mode of the battery pack by using a signal state of the first pin and a signal state of the second pin;

[0011] The power metering unit is used to measure the power according to the current charge and discharge mode of the battery pack.

[0012] According to the solution provided by the embodiment of the present invention, it is possible to distinguish between the plug-in charging power, the battery swap station charging power, the energy recovery power, and the discharge power. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to understand the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0014] Figure 1It is a flowchart of an intelligent power measurement method provided by an embodiment of the present invention;

[0015] Figure 2 It is a schematic diagram of an intelligent power measurement device provided by an embodiment of the present invention;

[0016] Figure 3 It is a schematic structural diagram of an intelligent power measurement electric meter provided by an embodiment of the present invention. Specific embodiments

[0017] The following is a detailed description of the preferred embodiments of the present invention with reference to the accompanying drawings. It should be understood that the following described preferred embodiments are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0018] Figure 1 It is a flowchart of an intelligent power measurement method provided by an embodiment of the present invention, as Figure 1 shown, including:

[0019] Step S101: The electric meter set in the battery pack monitors the signal states of the first pin and the second pin in real time;

[0020] Step S102: The electric meter determines the current charge-discharge mode of the battery pack by using the signal states of the first pin and the second pin;

[0021] Step S103: The electric meter performs power measurement according to the current charge-discharge mode of the battery pack.

[0022] Among them, the first pin is defined as the charging activation A+ signal; the second pin is defined as the signal of the swap station. The charge-discharge modes include: discharge mode, energy recovery charging mode, plug-in charging mode, and swap station charging mode.

[0023] Specifically, the electric meter determines the current charge-discharge mode of the battery pack by using the signal states of the first pin and the second pin, including: when there is no signal on both the first pin and the second pin, the electric meter detects the current directions of the third pin and the fourth pin defined as current feedback; when the electric meter detects that the current directions of the third pin and the fourth pin are flowing out, it is determined that the current charge-discharge mode of the battery pack is the discharge mode; when the electric meter detects that the current directions of the third pin and the fourth pin are flowing in, it is determined that the current charge-discharge mode of the battery pack is the energy recovery charging mode.

[0024] Specifically, the electric meter determines the current charge and discharge mode of the battery pack based on the signal status of the first pin and the signal status of the second pin. When the first pin has a signal and the second pin has no signal, the electric meter determines that the current charge and discharge mode of the battery pack is a plug-in charging mode; when both the first pin and the second pin have signals, the electric meter determines that the current charge and discharge mode of the battery pack is a battery swap station charging mode.

[0025] Figure 2 FIG. 1 is a schematic diagram of an intelligent power measurement device provided by an embodiment of the present invention. Figure 2 As shown, it includes: a monitoring unit 201, which is used to monitor the signal status of the first pin and the signal status of the second pin in real time; a determination unit 202, which is used to determine the current charge and discharge mode of the battery pack using the signal status of the first pin and the signal status of the second pin; and a power metering unit 203, which is used to measure power according to the current charge and discharge mode of the battery pack.

[0026] The first pin is defined as the charging activation A+ signal, and the second pin is defined as the battery swap station signal. The charging and discharging modes include: discharge mode, energy recovery charging mode, plug-in charging mode, and battery swap station charging mode.

[0027] An electronic device provided by an embodiment of the present application includes: a memory; a processor; and a computer program; wherein the computer program is stored in the memory and is configured to be executed by the processor to implement an intelligent power measurement method.

[0028] An embodiment of the present application provides a computer-readable storage medium having a computer program stored thereon; the computer program is executed by a processor to implement an intelligent method for measuring electrical quantity.

[0029] Figure 3 FIG. 1 is a schematic diagram of the structure of an intelligent electric meter for measuring electric quantity provided by an embodiment of the present invention. Figure 3 As shown, the metering chip is mounted on the meter PCB. Numbers 1-6 represent the pins for external connections on the PCB. Pins 1 and 2 power the meter, pins 5 and 6 provide communication, pins 7 and 8 provide two voltage feedback paths, and pins 9 and 10 provide two current feedback paths.

[0030] It should be pointed out that Figure 3 The pin definitions in the table are for reference only and do not represent the actual pin order. The meter has two voltage feedback paths (pins 7 and 8) and two current feedback paths (pins 9 and 10) because heavy trucks and construction machinery draw high currents. Splitting the paths into two facilitates reduced wiring diameter and heat dissipation.

[0031] Under normal circumstances, when the vehicle is driving, there is no signal on pins 3 and 4. At this time, the meter distinguishes the measurement mode based on the direction of the current feedback (positive or negative value). When the current flows out of the battery, it is discharged and recorded as discharged power. When the current flows into the battery, it is charged and recorded as energy recovery power.

[0032] When the vehicle is parked, if it is plugged into a charging station, the A+ signal (charging activation signal) on pin 3 is activated, and there is no signal on pin 4. This mode is plugged into the charging station, and the charging capacity is recorded as the plugged into the charging station. When the battery pack is swapped to a battery swap station for charging, the A+ signal on pin 3 is activated, and the battery swap station signal on pin 4 is also activated. This mode is battery swap station charging, and the charging capacity is recorded as the battery swap station charging capacity.

[0033] At this point, the smart meter uses two voltage feedbacks (pins 7 and 8) to read the voltage and two current feedbacks (pins 9 and 10) to read the current, and can measure the plug-in charging power, the battery swap station charging power, the energy recovery power, and the discharge power respectively.

[0034] According to the solution provided by the embodiment of the present invention, electricity metering in different modes is achieved through the A+ signal of pin 3, the battery swap station signal of pin 4, and the positive and negative values of the current feedback.

[0035] Although the present invention has been described in detail above, it is not limited thereto, and those skilled in the art can make various modifications based on the principles of the present invention. Therefore, any modifications made based on the principles of the present invention should be understood to fall within the scope of protection of the present invention.

Claims

1. A method for intelligent measurement of electric quantity, characterized in that: include: The electric meter installed in the vehicle battery pack monitors the signal status of the first pin defined as the charging activation A+ signal and the signal status of the second pin defined as the battery swap station signal in real time; The electric meter determines a current charge and discharge mode of the battery pack by using a signal state of the first pin and a signal state of the second pin, which includes: When there is no signal at the first pin and the second pin, the electric meter detects the current direction of the third pin and the fourth pin defined as current feedback; When the electric meter detects that the current direction of the third pin and the fourth pin is outflow, it is determined that the current charge and discharge mode of the battery pack is the discharge mode; When the electric meter detects that the current direction of the third pin and the fourth pin is inflow, it is determined that the current charging and discharging mode of the battery pack is the energy recovery charging mode; When there is a signal on the first pin and no signal on the second pin, the electric meter determines that the current charging and discharging mode of the battery pack is a plug-in charging mode; When both the first pin and the second pin have signals, the electric meter determines that the current charging and discharging mode of the battery pack is the battery swap station charging mode; Wherein, the first pin, the second pin, the third pin and the fourth pin are all external connection pins of the electric meter PCB; The electric meter measures the amount of electricity according to the current charge and discharge mode of the battery pack.

2. An intelligent power measurement device, characterized in that: include: A monitoring unit, configured to monitor in real time the signal status of a first pin defined as a charging activation A+ signal and a second pin defined as a battery swap station signal, provided at an electric meter in a vehicle battery pack; a determining unit, configured to determine a current charge and discharge mode of the battery pack by using a signal state of the first pin and a signal state of the second pin, comprising: When there is no signal at the first pin and the second pin, the electric meter detects the current direction of the third pin and the fourth pin defined as current feedback; When the electric meter detects that the current direction of the third pin and the fourth pin is outflow, it is determined that the current charge and discharge mode of the battery pack is the discharge mode; When the electric meter detects that the current direction of the third pin and the fourth pin is inflow, it is determined that the current charging and discharging mode of the battery pack is the energy recovery charging mode; When there is a signal on the first pin and no signal on the second pin, the electric meter determines that the current charging and discharging mode of the battery pack is a plug-in charging mode; When both the first pin and the second pin have signals, the electric meter determines that the current charging and discharging mode of the battery pack is the battery swap station charging mode; Wherein, the first pin, the second pin, the third pin and the fourth pin are all external connection pins of the electric meter PCB; A power metering unit, configured to perform power metering according to a current charge and discharge mode of the battery pack; Among them, the charging and discharging modes include: discharge mode, energy recovery charging mode, plug-in charging mode and battery swap station charging mode.

3. An electronic device, characterized in that: include: Memory; processor; and a computer program; wherein, the computer program is stored in the memory and is configured to be executed by the processor to implement the method according to claim 1.

4. A computer-readable storage medium, characterized in that, A computer program is stored thereon; the computer program is executed by a processor to implement the method according to claim 1.

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