JP2015021925A - High voltage battery charging simulation system and charging simulation method using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a high voltage battery charging simulation system and a charging simulation method using the same.SOLUTION: A high voltage battery charging simulation system includes: a simulation high voltage battery pack, a simulation high voltage battery management system, multiparty communication equipment and a charging station. The simulation high voltage battery management system instantaneously calculates and updates the voltage value of the simulation high voltage battery pack, and the voltage value changes in accordance with a charging flow. The simulation high voltage battery pack is able to simulate change in characteristics when the battery pack is actually charged. Thus, it is possible to detect the operation when the multiparty communication equipment and the charging station are actually charged on the basis of this.

Description

  The present invention relates to a battery charge simulation system, and more particularly to a battery charge simulation system used for a high voltage battery and a charge simulation method using the same.

  In the prior art, a charging station, a charging peripheral equipment device testing method such as a multi-party communication device is a method of measuring a charging flow and a communication flow separately, so the charging station and the multi-party communication device in the actual charging process It is not possible to detect the simultaneous operation status. This can cause unexpected errors later in use. In the test process, it is necessary to test the operation status of the peripheral equipment by connecting to the battery pack.However, there is a possibility that an error or unstable condition may appear in the peripheral equipment. There is a risk of overheating and damage to the pack and even explosion. For this reason, it is very important to assist the measurement of peripheral equipment with a battery simulation device that can simulate the actual operation of the battery.

  In the technique disclosed in Patent Document 1, it is necessary to first input the characteristic data of each battery to the battery simulation device, and the battery simulation device performs necessary changes based on the battery characteristic data. Not only does it take time to input the characteristic data in advance, but the battery simulation device cannot simulate the actual characteristic change of the battery pack during the charging process, so it closely approaches the actual battery pack charging status. I can't. Further, the technique disclosed in Patent Document 2 simulates the state of the battery that needs to be charged or damaged and opened using the difference in potential. The simulation method also uses the actual characteristics of the battery pack during the charging process. Since the change cannot be simulated, it cannot be brought close to the actual charging state of the battery pack.

Taiwan Patent No. 1262382 Specification US Pat. No. 7,764,066

  An object of the present invention is to provide a high voltage battery charging simulation system and a charging simulation method using the same.

  The high voltage battery charging simulation system of the present invention includes a simulated high voltage battery pack, a simulated high voltage battery management system, a multi-party communication device, and a charging station. The simulated high voltage battery management system immediately calculates and updates the voltage value of the simulated high voltage battery pack, the voltage value changes with the charging flow, and the simulated high voltage battery pack charges the actual battery pack. It is possible to simulate changes in characteristics over time. As a result, the communication and charging functions during actual charging of the multi-party communication device and the charging station can be measured.

  The simulation process of the high voltage battery charging simulation system is as follows. The simulated high voltage battery management system first sets the initial voltage value of the simulated high voltage battery pack. Then, the current voltage and current charging current data are transmitted to the multi-party communication device. The multi-party communication device converts the charging needs calculated based on the received data into a language used by the charging station, and transmits the language to the charging station. The charging station starts charging after confirming that the charging needs and the needs actually required by the simulated high voltage battery pack are the same. The simulated high voltage battery management system continues to calculate and update the voltage value of the simulated high voltage battery pack as the charging flow starts, and terminates the charging flow when the simulated high voltage battery pack voltage value is equal to the charging voltage. To do.

  An advantage of the present invention is that it provides a system and operation process that is convenient to operate and can effectively simulate characteristic changes during the actual battery charging process. When measuring peripheral equipment such as multi-party communication devices and charging stations, the high voltage battery charging simulation system can be used to immediately know and repair the functions of the peripheral equipment during actual charging. It is possible to avoid directly measuring the peripheral equipment with the actual battery pack, and to prevent the battery pack from being overheated, damaged, or exploded due to instability or error inside the peripheral equipment. Therefore, safety at the time of measurement can be greatly increased, and cost loss can be effectively reduced. Moreover, the simulated high voltage battery management system can be a control device having control and display functions of an industrial computer, an embedded computer, or the like. Since the battery pack can be simulated in different states through simple settings, the convenience of using the system is enhanced.

It is a block diagram which shows the system of this invention. It is a flowchart which shows the simulation process of this invention.

  As shown in FIG. 1, the high voltage battery charging simulation system of the present invention includes a simulated high voltage battery pack 1, a simulated high voltage battery management system 2, a multi-party communication device 3, and a charging station 4.

  The simulated high voltage battery pack 1 includes a DC load device 11 and a super capacitor 12. The DC load device 11 is used to simulate the current voltage V1 of the simulated high voltage battery pack 1, and the DC load device 11 is charged. At the start of the flow, it is used to consume the charging voltage V3 output from the charging station 4, and simulates the situation where the charging station 4 consumes the charge amount to charge the actual battery pack. The supercapacitor 12 is connected on the DC load device 11 so as to be connected to the positive electrode and the negative electrode of the DC load device 11 at the positive electrode and the negative electrode, respectively, in order to simulate the current open circuit voltage V2 of the simulated high voltage battery pack 1. The current open circuit voltage V2 increases with the charging flow because the charging station 4 can measure the current open circuit voltage V2 during the charging process and simultaneously charge the supercapacitor 12. It is possible to simulate the situation where the charging station 4 is connected to the actual battery pack, and to allow the charging station 4 to continue the charging flow. The calculation method of the capacity (C) required for the supercapacitor 12 is as follows.

Ｖ_workは動作開始電圧、は動作停止電圧、Ｉは動作電流、Ｔは動作時間であり、使用者はニーズと上の式の計算に基づき必要なスーパーキャパシタ１２の容量（Ｃ）を選択し、スーパーキャパシタ１２を充電して現在の開回路電圧Ｖ２を具備させた後、充電フローを開始することができる。

V _work is the operation start voltage, is the operation stop voltage, I is the operation current, and T is the operation time. The user selects the necessary capacity (C) of the supercapacitor 12 based on the needs and the calculation of the above formula, After charging the supercapacitor 12 to provide the current open circuit voltage V2, the charging flow can begin.

  The simulated high-voltage battery management system 2 can be a control device having control and display functions of an industrial computer, an embedded computer, etc., and is connected to the DC load device 11 and is actually based on the measured charging current. It is used to combine the charging characteristics of the battery pack, immediately calculate and update the current voltage V1, and simulate the change in characteristics when the battery pack is actually charged. The calculation method is as follows.

Ｉ（ｔ）は充電電流、ｔは時間変数である。 First, the accumulated charge is calculated.

I (t) is a charging current, and t is a time variable.

Based on the accumulated charge Ah obtained by the calculation, the remaining charge (State of charge, SOC) of the simulated high voltage battery pack 1 is calculated.
SOC = (accumulated charge Ah / battery capacity Ah) * 100%

The current open circuit voltage (OCV) of the simulated high-voltage battery pack 1 and the remaining charge of the simulated high-voltage battery pack 1 have a functional relationship, and the impedance (Impedance) value of the simulated high-voltage battery pack 1 is also In order to form a functional relationship with the remaining charge of the simulated high voltage battery pack 1, the current voltage V1 in the next state of the simulated high voltage battery pack 1 is as follows.
V1 = OCV (SOC) + I (t) * R (SOC)

  The simulated high-voltage battery management system 2 is connected to the multi-party communication device 3 and immediately transmits the calculated current voltage V1 and the measured charging current to the multi-party communication device 3, so that the multi-party communication device 3 In order to test whether or not the necessary charging voltage and charging current can be selected in light of the received content, and convert it into a language that can be used by the charging station 4 and then send it to the charging station 4 for charging Used.

  This system can be used to test the functionality of the charging station 4, which includes CHAdeMO, the Society of Automotive Engineers (SAE), the International Electrotechnical Commission (IEC), It may be a DC high-speed charging station that satisfies the standards of the DC fast charging system such as the National Standard (GB) of the People's Republic of China. When the needs are transmitted, the charging station 4 first determines that the charging needs from the multi-party communication device 3 are the current simulated high voltage battery pack 1 status, for example, the current Whether or not the circuit voltage V2 is met is confirmed, and if it is confirmed that the current state of the simulated high-voltage battery pack 1 meets the charging needs, the charging station 4 continues to charge.

  In the process of charging, the current voltage V1 needs to be set equal to or higher than the current open circuit voltage V2 and lower than the charging voltage V3. The DC load device 11 consumes only the charging voltage V3 output from the charging station 4 during the charging process, and the charging station 4 charges the actual battery. This is to simulate the situation where the battery consumes the charging voltage V3 of the charging station 4. When the current voltage V1 and the current open circuit voltage V2 are increased until they are equal to the charging voltage V3, charging of the simulated high voltage battery pack 1 is completed, and the charging flow can be terminated.

FIG. 2 shows a flowchart of the operation process of the present invention. The process is as follows.
a. The supercapacitor 12 is charged in an independent state, charged until the current open circuit voltage V2 is simulated, and then connected in parallel with the DC load device 11.
The DC load device 11 is used to simulate the current voltage V1.
b. The simulated high voltage battery management system 2 sets the initial value of the current voltage V1.
The simulated high voltage battery management system 2 combines the actual charging characteristics of the battery pack based on the measured charging current, and calculates and updates the current voltage V1 of the DC load device 11.
c. The simulated high voltage battery management system 2 transmits the current voltage V1 and the current charging current to the multi-party communication device 3.
d. The required charging voltage V3 and charging current are determined based on the current voltage V1 and charging current received by the multi-party communication device 3.
e. The multi-party communication device 3 converts the charging voltage V3 and the charging current into a language used by the charging station 4 and transmits it to the charging station 4.
Charging station 4 is a DC high-speed charging station that meets standards such as CHAdeMO, Society of Automotive Engineers (SAE), International Electrotechnical Commission (IEC), People's Republic of China National Standard (GB), etc. can do.
f. After the charging station 4 confirms that the charging voltage V3 and the charging current are accurate, charging is started.
The charging station 4 first confirms from the multi-party communication device 3 whether its charging needs are compatible with the current state of the simulated high voltage battery pack 1.
g. The simulated high voltage battery management system 2 continues to calculate and update the current voltage V1 as the charging flow starts, and transmits the measured charging current and the current voltage V1 to the multi-party communication device 3.
h. When the current voltage V1, the current open circuit voltage V2, and the charging voltage V3 are the same, the charging flow is terminated.

  The above description is based on the best embodiment of the present invention, and is not intended to limit the technical scope of the present invention. The equivalent description based on the claims and the contents of the specification of the present patent application. All variations and modifications that have the following effects are included in the technical scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Simulated high voltage battery pack 2 Simulated high voltage battery management system 3 Multi-party communication device 4 Charging station 11 DC load device 12 Super capacitor

Claims (15)

A simulated high voltage battery pack including a DC load device and a super capacitor;
A simulated high voltage battery management system connected to the DC load device;
Connected to the DC load device, the supercapacitor, and the simulated high voltage battery management system, and receives the charging voltage information and charging current information required by the simulated high voltage battery pack transmitted by the simulated high voltage battery management system. A multi-party communication device used for
A charging station connected to the multi-party communication device and used to provide the charging voltage and the charging current;
Including high voltage battery charging simulation system.   The DC load device is used to simulate the current voltage of the simulated high voltage battery pack, and the supercapacitor is used to simulate the current open circuit voltage of the simulated high voltage battery pack; The high voltage battery charging simulation system according to claim 1.   The charging station meets DC high-speed charging system standards such as CHAdeMO, Society of Automotive Engineers (SAE), International Electrotechnical Commission (IEC), People's Republic of China National Standard (GB), etc. The high voltage battery charging simulation system according to claim 1, wherein the high voltage battery charging simulation system can be a direct current fast charging station.   The high-voltage battery charging simulation system according to claim 1, wherein the simulated high-voltage battery management system can be a control device having control and display functions of an industrial computer, an embedded computer, or the like.   The simulated high voltage battery management system is used to set the current voltage, and transmits the set current voltage and the currently measured charging current to the multi-party communication device. The high voltage battery charging simulation system according to claim 1.   The current voltage calculation formula is OCV (SOC) + I (t) * R (SOC), where OCV is the current open circuit voltage (OCV) of the simulated high voltage battery pack. R is the impedance value of the simulated high-voltage battery pack, both of which have a functional relationship with the remaining charge (State of charge, SOC) of the simulated high-voltage battery pack, and I (t) is 6. The high voltage battery charging simulation system according to claim 5, wherein the charging current is t, and t is a time variable.   6. The high voltage battery charging according to claim 5, wherein the state of charge is when the current voltage setting is less than the charge voltage and equal to or greater than the current open circuit voltage. Simulated system.   6. The high voltage battery charging simulation system according to claim 5, wherein when the current voltage and the current open circuit voltage are increased to the same as the charging voltage, the battery is fully charged. A simulation method using a high voltage battery charging simulation system,
a. Charging the supercapacitor in an independent state, charging until the current open circuit voltage is simulated, and then connecting in parallel with the DC load device;
b. A simulated high voltage battery management system setting an initial value of the current voltage;
c. The simulated high voltage battery management system transmitting the current voltage and current charging current to a multi-party communication device;
d. Determining a required charging voltage and the charging current based on the current voltage and the charging current received by the multi-party communication device;
e. The multi-party communication device converts the charging voltage and the charging current into a language used by a charging station, and transmits the language to the charging station;
f. Starting the charging after the charging station has confirmed that the charging voltage and the charging current are accurate; and
g. The simulated high-voltage battery management system continues to calculate and update the current voltage as the charging flow begins, and transmits the measured charging current and the current voltage to the multi-party communication device; ,
h. A charging simulation method using a high voltage battery charging simulation system, comprising: a step of terminating a charging flow when the current voltage and the current open circuit voltage become equal to the charging voltage.   The current voltage calculation formula is OCV (SOC) + I (t) * R (SOC), where OCV is the current open circuit voltage (OCV) of the simulated high voltage battery pack. R is the impedance value of the simulated high-voltage battery pack, both of which have a functional relationship with the remaining charge (State of charge, SOC) of the simulated high-voltage battery pack, and I (t) is The charging simulation method using the high voltage battery charging simulation system according to claim 9, wherein the charging current is t and t is a time variable.   The high voltage battery charging according to claim 9, wherein the state of charge is when the current voltage setting is less than the charge voltage and equal to or greater than the current open circuit voltage. Charge simulation method using simulation system.   The charging using the high voltage battery charging simulation system according to claim 9, wherein the current voltage and the current open circuit voltage are fully charged when the current voltage and the current open circuit voltage are increased to the same as the charging voltage. Simulation method.   The charging simulation method using the high voltage battery charging simulation system according to claim 9, wherein the DC load device in the step a is used to simulate the current voltage.   10. The high voltage battery charging according to claim 9, wherein the simulated high voltage battery management system in the step b can be a control device having control and display functions of an industrial computer, an embedded computer, or the like. Charge simulation method using simulation system. The charging station in step e is a DC high-speed charging system such as CHAdeMO, Society of Automotive Engineers (SAE), International Electrotechnical Commission (IEC), People's Republic of China National Standard (GB), etc. The charging simulation method using the high voltage battery charging simulation system according to claim 9, wherein the DC high speed charging station satisfies a standard.

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