Reverse charging control system and control method

Abstract

The present invention discloses a reverse charging control system, which includes a power supply end and a power receiving end. The power receiving end includes a signal transmission module and a charging amount setting module. The power supply end includes a signal receiving module, a charging time calculation module, a control module, and a power consumption calculation module. The present invention restricts the conditions for wired and wireless reverse charging. By actively setting the required power of the power receiving end, calculating the required charging time and the power consumption of the power supply end according to the required power of the power receiving end, it is judged whether the conditions for reverse charging are met, avoiding the situation of forcibly stopping reverse charging when the power of the power supply end is lower than a certain value, and can actively choose whether to perform reverse charging. At the same time, by calculating the power consumption of the power supply end to meet the required power of the power receiving end, it can actively avoid the situation where the power of the power supply end is exhausted while the power receiving end obtains very little power, that is, the charging efficiency is too low.

Description

Technical Field

[0001] The present invention relates to the technical field of battery charging and discharging, and specifically refers to a reverse charging control system and a control method. Background Art

[0002] The reverse charging technology is becoming increasingly mature. However, due to the low charging efficiency, reverse charging consumes a large amount of power at the power supply end. Therefore, it is necessary to control reverse charging to determine whether the conditions for reverse charging are met. In addition, due to the large reverse charging loss, there will be a situation where the remaining power of the power supply end cannot meet the requirements of the power receiving end, resulting in the complete consumption of the power of the power supply end and very little power obtained by the power receiving end.

[0003] Patent CN 108808798A provides a method and device for reverse charging. In this patent, the power supply terminal and the power receiving terminal are in a connected state. The method includes: obtaining the first battery information of the power supply terminal, and controlling the power supply state of the power supply terminal to the power receiving terminal according to the first battery information. It can achieve the purpose of controlling its own power supply state to the power receiving terminal according to its own battery information, that is, the purpose of not exhausting its own power during the power supply process. And a remaining power threshold / standby time threshold / difference threshold of the remaining power between the power supply device and the power receiving device is set for the power supply device, and charging stops when the threshold is exceeded.

[0004] This solution only restricts reverse charging from the perspective of wired reverse charging, does not involve the wireless charging field, and forcibly stops reverse charging when certain conditions are met, without an active selection design. In addition, this solution only restricts the reverse charging conditions and does not consider the situation where the power supply device runs out of power while the power receiving device obtains very little power. Summary of the Invention

[0005] The purpose of the present invention is to provide a reverse charging control system and a control method. The present invention restricts the charging conditions of wired and wireless reverse charging from two aspects: charging power and charging time, actively sets the required power, judges whether the power supply end can meet the required power, and actively avoids the situation where the power supply end runs out of power while the power receiving end obtains very little power.

[0006] To achieve this purpose, the reverse charging control system designed by the present invention includes a power supply end and a power receiving end. The power receiving end includes a signal transmission module and a charging amount setting module. The power supply end includes a signal receiving module, a charging time calculation module, a control module, and a power consumption calculation module. Among them, the signal transmission module is used to transmit the required power Q1 of the power receiving end preset by the charging amount setting module to the signal receiving module;

[0007] The power consumption calculation module is used to calculate the maximum charging power Q2 that the current remaining power of the power supply end can provide for the power receiving end;

[0008] The control module is used to compare Q1 with Q2. If Q1 ≥ Q2, the power supply end does not charge; if Q1 < Q2, the power consumption calculation module calculates the power consumption Q3 of the power supply end to supply the required power Q1 of the power receiving end.

[0009] The charging time calculation module is used to calculate the charging time t1 required for the power supply end to supply the required power Q1 of the power receiving end and the standby time t2 of the power supply end in the power supply state.

[0010] The control module is used to compare the charging time t1 and the standby time t2. If t1 ≥ t2, the power supply end does not charge; if t1 < t2, the power supply end starts to charge.

[0011] Advantages of the present invention:

[0012] The present invention restricts the conditions for wired and wireless reverse charging. By actively setting the required power of the power receiving end, calculating the required charging time and the power consumption of the power supply end according to the required power of the power receiving end, and judging whether the conditions for reverse charging are met, it avoids the situation of forcibly stopping reverse charging when the power of the power supply end is lower than a certain value, and can actively choose whether to perform reverse charging; at the same time, by calculating the power consumption of the power supply end to meet the required power of the power receiving end, it can actively avoid the situation where the power of the power supply end is exhausted while the power receiving end obtains very little power, that is, the charging efficiency is too low. Description of the drawings

[0013] Figure 1 is the structural block diagram of the present invention;

[0014] Figure 2 is the flow chart of the present invention.

[0015] Wherein, 1 - signal transmission module, 2 - charging amount setting module, 3 - signal receiving module, 4 - charging time calculation module, 5 - control module, 6 - power consumption calculation module, 7 - loss monitoring module. Specific embodiments

[0016] The following further elaborates on the present invention in detail in conjunction with the drawings and specific embodiments:

[0017] Such as Figure 1The reverse charging control system shown includes a power supply end (such as a car, a mobile phone, a Bluetooth speaker, etc.) and a power receiving end (such as a car, a mobile phone, a Bluetooth speaker, etc.). The power receiving end includes a signal transmission module 1 and a charging amount setting module 2. The power supply end includes a signal receiving module 3, a charging time calculation module 4, a control module 5, and a power consumption calculation module 6. Among them, the signal transmission module 1 is used to transmit the required power Q1 of the power receiving end preset by the charging amount setting module 2 to the signal receiving module 3, and the signal receiving module 3 transmits the required power Q1 of the power receiving end to the charging time calculation module 4, the control module 5, and the power consumption calculation module 6;

[0018] The power consumption calculation module 6 is used to calculate the maximum charging power Q2 that the current remaining power of the power supply end can provide for the power receiving end;

[0019] The control module 5 is used to compare Q1 with Q2. If Q1≥Q2, that is, the power supply end cannot provide the required power of the power receiving end, the power supply end does not charge, prompts the maximum chargeable power Q2, and waits for the required power to be set again; if Q1<Q2, that is, the power supply end can provide the required power of the charging end, the power consumption calculation module 6 calculates the power consumption Q3 of the power supply end to supply the required power Q1 of the power receiving end; This allows the user to understand the power status of the power supply end and the power receiving end after charging before charging, and avoid the situation where when the power of the power supply end is exhausted, the charging amount of the power receiving end is not much, resulting in both devices (the power supply end and the power receiving end) being unable to be used;

[0020] The charging time calculation module 4 is used to calculate the charging time t1 required for the power supply end to supply the required power Q1 of the power receiving end and the standby time t2 of the power supply end in the power supply state;

[0021] The control module 5 is used to compare the charging time t1 and the standby time t2 of the power supply end in the power supply state. If t1≥t2, that is, the standby time of the power supply end cannot meet the charging time, the power supply end does not charge, prompts the standby time t2, and waits for the required power to be set again; if t1<t2, the power supply end starts to charge, and displays the required power consumption Q3, the charging time t1 required, and the current standby time t2. This allows the user to understand the standby time of the power supply end in the power supply state and the charging time required by the power receiving end before charging, and avoid the situation where the standby time of the power supply end in the power supply state is less than the charging time required by the power receiving device, resulting in the power of the power supply end being exhausted before the charging of the power receiving end is completed.

[0022] The present invention actively sets the required power, determines whether the power supply end can meet the required power, and determines whether the reverse charging condition is met from two aspects of power consumption and charging time.

[0023] In the above technical solution, the power consumption calculation module 6 calculates the maximum charging power Q2 that the current remaining power of the power supply end can provide for the power receiving end through the following formula:

[0024] Q2 = (W3 / V2) * K2

[0025] Wherein, W3 is the maximum electric energy transferred from the power supply end to the power receiving end, V2 is the operating voltage of the power receiving end, K2 is the second adjustment factor, and K2 is calibrated through the error between the theoretical value and the actual value to eliminate the error in electric quantity calculation.

[0026] In the above technical solution, the maximum electric energy W3 transferred from the power supply end to the power receiving end is calculated by the following formula:

[0027] W3 = W1 - W2

[0028] Wherein, W1 is the total electric energy of the power supply end, and W2 is the loss electric energy of the reverse charging monitored by the loss monitoring module 7.

[0029] In the above technical solution, the total electric energy W1 of the power supply end is calculated by the following formula:

[0030] W1 = Q * V1 * K1

[0031] Wherein, Q is the remaining capacity of the battery at the power supply end, V1 is the current operating voltage of the power supply end, K1 is the first adjustment factor, and K1 is calibrated through the error between the theoretical value and the actual value to eliminate the error in electric energy calculation.

[0032] In the above technical solution, the power consumption Q3 of the power supply end for supplying the required electric quantity Q1 to the power receiving end is calculated by the following formula:

[0033] Q3 = (W5 / V1) * K4

[0034] Wherein, W5 is the total electric energy required for the power supply end to supply power Q1 to the power receiving end, V1 is the current operating voltage of the power supply end, K4 is the fourth adjustment factor, and K4 is calibrated to eliminate the error in electric quantity calculation.

[0035] In the above technical solution, the total electric energy W5 required for the power supply end to supply power Q1 to the power receiving end is calculated by the following formula:

[0036] W5 = W4 + W2

[0037] Wherein, W4 is the required electric energy of the power supply end, and W2 is the loss electric energy of the reverse charging monitored by the loss monitoring module 7.

[0038] In the above technical solution, the required electric energy W4 of the power supply end is calculated by the following formula:

[0039] W4 = Q1 * V2 * K3

[0040] Among them, Q1 is the power supply provided by the power supply end to meet the power demand of the power receiving end, V2 is the operating voltage of the power receiving end, K3 is the third adjustment factor, and K3 is calibrated through the error between the theoretical value and the actual value, and is used to eliminate the error in power calculation.

[0041] In the above technical solution, the charging time t1 required for the power supply end to supply the power demand Q1 of the power receiving end is calculated by the following formula:

[0042] t1 = (Q3 / I1) * K5

[0043] Among them, Q3 is the power consumption of the power supply end to supply the power demand Q1 of the power receiving end, I1 is the operating current of the power supply end, K5 is the fifth adjustment factor, and K5 is calibrated through the error between the theoretical value and the actual value, and is used to eliminate the error in time calculation.

[0044] In the above technical solution, the standby time t2 of the power supply end in the power supply state is calculated by the following formula:

[0045] t2 = (Q / I1) * K6

[0046] Among them, Q is the remaining battery capacity of the power supply end, I1 is the operating current of the power supply end, K6 is the sixth adjustment factor, and K6 is calibrated through the error between the theoretical value and the actual value, and is used to eliminate the error in time calculation.

[0047] A reverse charging control method for the above system, as Figure 2 shown, it includes the following steps:

[0048] Step 1: The signal transmission module 1 transmits the power demand Q1 preset by the charging amount setting module 2 to the signal receiving module 3;

[0049] Step 2: The power consumption calculation module 6 calculates the maximum charging power Q2 that the current remaining power of the power supply end can provide for the power receiving end;

[0050] Step 3: The control module 5 compares Q1 with Q2. If Q1 ≥ Q2, that is, the power supply end cannot provide the power demand of the power receiving end, the power supply end does not charge, prompts the maximum chargeable amount Q2, and waits for the demand power to be set again; if Q1 < Q2, that is, the power supply end can provide the power demand of the charging end, the power consumption calculation module 6 calculates the power consumption Q3 of the power supply end to supply the power demand Q1 of the power receiving end;

[0051] Step 4: The charging time calculation module 4 calculates the charging time t1 required for the power supply end to supply the power demand Q1 of the power receiving end and the standby time t2 of the power supply end in the power supply state;

[0052] Step 5: The control module 5 is used to compare the charging time t1 and the standby time t2. If t1≥t2, that is, the standby time of the power supply end cannot meet the charging time, the power supply end does not charge, prompts the standby time t2, and waits for the required power to be set again; if t1<t2, the power supply end starts charging and displays the required power consumption Q3, the charging required time t1, and the current standby time t2.

[0053] The above steps 1 to 5 are recalculated every t time to avoid excessive power consumption caused by adding other loads to the power supply end and the power receiving end. If it is determined that the reverse charging conditions are not met (Q1<Q2 or t1<t2), charging is stopped and a prompt is given at the power supply end, displaying the required power consumption Q3, the charging required time t1, and the current standby time t2.

[0054] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

Claims

1. A reverse charging control system, characterized in that: It includes a power supply end and a power receiving end. The power receiving end includes a signal transmission module (1) and a charging amount setting module (2). The power supply end includes a signal receiving module (3), a charging time calculation module (4), a control module (5), and a power consumption calculation module (6). Among them, the signal transmission module (1) is used to transmit the required power Q1 of the power receiving end preset by the charging amount setting module (2) to the signal receiving module (3); The power consumption calculation module (6) is used to calculate the maximum charging power Q2 that the current remaining power of the power supply end can provide for the power receiving end; The control module (5) is used to compare Q1 with Q2. If Q1≥Q2, the power supply end does not charge; if Q1<Q2, the power consumption calculation module (6) calculates the power consumption Q3 of the power supply end to supply the required power Q1 of the power receiving end; The charging time calculation module (4) is used to calculate the charging time t1 required for the power supply end to supply the required power Q1 of the power receiving end and the standby time t2 until the power is exhausted in the power supply state of the power supply end; The control module (5) is used to compare the charging time t1 and the standby time t2 until the power is exhausted. If t1≥t2, the power supply end does not charge; if t1<t2, the power supply end starts charging.

2. The reverse charging control system according to claim 1, wherein: The power consumption calculation module (6) calculates the maximum charging power Q2 that the current remaining power of the power supply end can provide for the power receiving end through the following formula: Q2 = (W3 / V2)*K2 Wherein, W3 is the maximum electric energy transmitted from the power supply end to the power receiving end, V2 is the working voltage of the power receiving end, and K2 is the second adjustment factor.

3. The reverse charging control system according to claim 2, wherein: The maximum electric energy W3 transmitted from the power supply end to the power receiving end is calculated through the following formula: W3 = W1 - W2 Wherein, W1 is the total electric energy of the power supply end, and W2 is the loss electric energy of reverse charging monitored by the loss monitoring module (7).

4. The reverse charging control system according to claim 3, wherein: The total electric energy W1 of the power supply end is calculated through the following formula: W1 = Q*V1*K1 Wherein, Q is the remaining capacity of the power supply end battery, V1 is the current working voltage of the power supply end, and K1 is the first adjustment factor.

5. The reverse charging control system according to claim 1, characterized in that: The power consumption Q3 of the power supply end to supply the required power Q1 of the power receiving end is calculated through the following formula: Q3 = (W5 / V1)*K4 Wherein, W5 is the total electric energy required for the power supply end to supply power Q1 to the power receiving end, V1 is the current working voltage of the power supply end, and K4 is the fourth adjustment factor.

6. The reverse charging control system according to claim 5, wherein: The total electric energy W5 required for the power supply end to supply power Q1 to the power receiving end is calculated through the following formula: W5 = W4 + W2 Wherein, W4 is the required electric energy of the power supply end, and W2 is the loss electric energy of reverse charging monitored by the loss monitoring module (7).

7. The reverse charging control system according to claim 6, characterized in that: The required electric energy W4 of the power supply end is calculated through the following formula: W4 = Q1*V2*K3 Wherein, Q1 is the required power supplied by the power supply end to the power receiving end, V2 is the working voltage of the power receiving end, and K3 is the third adjustment factor.

8. The reverse charging control system according to claim 1, wherein: The charging time t1 required for the power supply end to supply the required power Q1 of the power receiving end is calculated through the following formula: t1 = (Q3 / I1)*K5 Wherein, Q3 is the power consumption of the power supply end to supply the required power Q1 of the power receiving end, I1 is the working current of the power supply end, and K5 is the fifth adjustment factor.

9. The reverse charging control system according to claim 1, wherein: The standby time t2 until the power is exhausted in the power supply state of the power supply end is calculated through the following formula: t2 = (Q / I1) * K6 Wherein, Q is the remaining capacity of the battery at the power supply end, I1 is the working current of the power supply end, and K6 is the sixth adjustment factor.

10. A reverse charging control method for the system according to claim 1, characterized in that, It includes the following steps: Step 1: The signal transmission module (1) transmits the required power Q1 of the power receiving end preset by the charging amount setting module (2) to the signal receiving module (3); Step 2: The power consumption calculation module (6) calculates the maximum charging power Q2 that the current remaining power of the power supply end can provide for the power receiving end; Step 3: The control module (5) compares Q1 with Q2. If Q1 ≥ Q2, the power supply end does not charge; if Q1 < Q2, the power consumption calculation module (6) calculates the power consumption Q3 of the power supply end to supply the required power Q1 of the power receiving end; Step 4: The charging time calculation module (4) calculates the charging time t1 required for the power supply end to supply the required power Q1 of the power receiving end and the standby time t2 until the power is exhausted when the power supply end is in the power supply state; Step 5: The control module (5) is used to compare the charging time t1 and the standby time t2 until the power is exhausted. If t1 ≥ t2, the power supply end does not charge; if t1 < t2, the power supply end starts charging.

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