Power supply conversion control system for double battery compartments

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By designing a power conversion control system in a dual battery compartment, using triodes and thyristors to detect and supplement the low voltage of the battery pack BT1, combined with delay triggering and relay control, the battery pack is solved in the prior art when loading or uphill in cargo or uphill in the prior art The problem of insufficient power has achieved a stable power supply for the vehicle.

CN222262234UActive Publication Date: 2024-12-27HSU DRAGON(JIANGSU) TECH CO LTD

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Patent Information

Application Number: CN202420050497.7
Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner
Filing Date: 2024-01-09
Publication Date: 2024-12-27
Estimated Expiration: 2034-01-09

AI Technical Summary

Technical Problem

The existing dual battery design cannot effectively compensate for the low voltage or undervoltage of the first battery when loading cargo or going uphill, resulting in insufficient power or slipping, and the first battery cannot be fully discharged when switching the second battery, affecting the vehicle's Driving stability.

Method used

Design a power conversion control system to detect and control the low voltage of the battery pack BT1 through transistor Q1 and resistor R1, use thyristor U2 and power manager U3 to supplement the voltage to BT1, and use delay trigger unit and relay T controls the shutdown of the battery pack BT1 and the conduction of BT2 to ensure the stability of the vehicle output voltage.

Benefits of technology

It realizes smooth driving when the vehicle is uphill or loaded. By real-time detection and compensation of the low voltage state of the battery pack BT1, the continuous power supply of the vehicle is ensured, and the problem of transitional discharge and insufficient discharge of the battery pack is avoided.

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Abstract

The utility model discloses a power supply conversion control system for double battery compartments. The power supply conversion control system comprises a first power supply unit, a low-voltage detection unit, a delay trigger unit, a second power supply unit and a power supply conversion unit, the low voltage of the battery pack BT1 is controlled through the triode Q1 and the resistor R1, prompting is carried out through the indicator lamp L1, when the battery pack BT1 is in a low-voltage state, the triode Q1 triggers to control the conduction of the silicon controlled rectifier U2, so that the battery pack BT2 supplements voltage to the battery pack BT1, the stability of the output voltage of a vehicle is ensured, and when the battery pack BT1 is in the low-voltage process, the voltage of the battery pack BT1 is reduced. The low voltage of the battery pack BT1 is subjected to delay detection through the capacitor C2 and the resistor R2, once the battery pack BT1 is detected to be in a low-voltage state for a long time, the relay T loses power, the normally open contact S1 is disconnected, the output of the battery pack BT1 is cut off, and the connection or disconnection between the battery pack BT2 and the battery pack BT1 is controlled by detecting the low-voltage state of the battery pack BT1.

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Description

Technical Field

[0001] The utility model relates to the technical field of dual battery management, in particular to a power conversion control system for dual battery compartments. Background Art

[0002] Dual battery design refers to the use of two batteries in a device or vehicle in order to increase the endurance of the device, improve the reliability of the power supply, or provide more power to meet the power needs of the device.

[0003] In the dual batteries of the prior art, usually one battery is used up first, and then the second battery is used. This method requires the first battery to be fully discharged before the second battery can be switched, resulting in transitional discharge of the first battery. In addition, the discharge of the first battery will be aggravated when the vehicle is loaded or going uphill. If the discharge voltage of the first battery is insufficient, the vehicle will slip or lack power. Therefore, it is impossible to compensate or control the insufficient discharge of the first battery according to the loading or uphill conditions of the vehicle to ensure the smooth driving of the vehicle. When the vehicle has low voltage or undervoltage when going uphill, the second battery is switched, which will prevent the first battery from being fully discharged. Therefore, it is impossible to compensate and switch the first battery according to the low voltage or undervoltage time period. Utility Model Content

[0004] Purpose of the utility model: to provide a power conversion control system for a dual battery compartment to solve the above-mentioned problems existing in the prior art.

[0005] Technical solution: A power conversion control system for a dual battery compartment, comprising:

[0006] The first power supply unit controls the power output of the battery pack BT1 by triggering the thyristor U1.

[0007] The low voltage detection unit controls the low voltage of the battery pack BT1 through transistor Q1 and resistor R1.

[0008] The delay trigger unit delays the shutdown of the low voltage of the battery pack BT1 through the capacitor C2 and the resistor R2.

[0009] The second power supply unit controls the power output of the battery pack BT2 by triggering the thyristor U2.

[0010] The power supply conversion unit controls the on / off of the battery pack BT2 through the power manager U3, so that the battery pack BT2 is turned on when the battery pack BT1 is powered off.

[0011] In a further embodiment, the first power supply includes a diode D3, a diode D4, a thyristor U1, a normally open contact S1 and a battery pack BT1, wherein the positive terminal of the diode D3 is respectively connected to one end of the power supply terminal J1 and the negative terminal of the thyristor U1, the negative terminal of the diode D3 is connected to the positive terminal of the diode D4, the negative terminal of the diode D4 is respectively connected to the positive terminal of the thyristor U1, the positive terminal of the battery pack BT1 and one end of the normally open contact S1, the other end of the normally open contact S1 is connected to pin 1 of the thyristor U1, and the negative terminal of the battery pack BT1 is connected to the other end of the power supply terminal J1.

[0012] In a further embodiment, the low voltage detection unit includes a resistor R1, a transistor Q1 and an indicator light L1, wherein one end of the resistor R1 is connected to the positive terminal of the diode D3, the other end of the resistor R1 is respectively connected to the collector terminal and the base terminal of the transistor Q1, the emitter terminal of the transistor Q1 is connected to the positive terminal of the indicator light L1, and the other end of the indicator light L1 is connected to the negative terminal of the battery pack BT1.

[0013] In a further embodiment, the delay trigger unit includes a relay T, a transistor Q4, a diode D2, a capacitor C2 and a resistor R2, wherein one end of the relay T is respectively connected to one end of the resistor R1, the negative end of the diode D2 and one end of the resistor R2, the other end of the relay T is connected to the collector end of the transistor Q4, the base end of the transistor Q4 is respectively connected to the positive end of the diode D2, one end of the capacitor C2 and the other end of the resistor R2, and the other end of the capacitor C2 is respectively connected to the emitter end of the transistor Q4 and the negative end of the battery pack BT1.

[0014] In a further embodiment, the second power supply unit includes a diode D1, a thyristor U2 and a battery pack BT2, wherein the positive terminal of the diode D1 is connected to one end of the resistor R1, the negative terminal of the diode D1 is connected to the negative terminal of the thyristor U2, the positive terminal of the thyristor U2 is respectively connected to the negative terminal of the diode D3 and the positive terminal of the battery pack BT2, the pin 1 of the thyristor U2 is connected to the emitter terminal of the transistor Q1, and the negative terminal of the battery pack BT2 is connected to the negative terminal of the indicator light L1.

[0015] In a further embodiment, the power supply conversion unit includes a capacitor C1, a power manager U3 and a field effect transistor Q3, wherein one end of the capacitor C1 is respectively connected to pin 5 of the power manager U3 and the positive end of the battery pack BT1, and the other end of the capacitor C1 is respectively connected to one end of the output terminal J2, the negative end of the battery pack BT2, and pin 2 and pin 3 of the power manager U3, pin 1 of the power manager U3 is connected to pin 2 of the field effect transistor Q3, pin 3 of the field effect transistor Q3 is respectively connected to the negative end of the diode D1 and the other end of the output terminal J2, and pin 1 of the field effect transistor Q3 is connected to the positive end of the thyristor U2.

[0016] In a further embodiment, the thyristor U1 and the thyristor U2 are both unidirectional thyristors, the transistor Q1 and the transistor Q4 are both NPN, the power manager U3 is LTC4414, and the relay T is energized to control the closing of the normally open contact S1.

[0017] Beneficial effect: The utility model discloses a power conversion control system for a dual battery compartment. The utility model controls the low voltage of the battery pack BT1 through the transistor Q1 and the resistor R1, and prompts it through the indicator light L1. When the battery pack BT1 is in a low-voltage state, the triggering of the transistor Q1 controls the conduction of the thyristor U2 so that the battery pack BT2 supplements the voltage to the battery pack BT1, ensuring the stability of the vehicle output voltage. When the battery pack BT1 is in a low-voltage process, the low voltage of the battery pack BT1 is delayed detected through the capacitor C2 and the resistor R2. Once it is detected that the battery pack BT1 is in a low-voltage state for a long time, the relay T loses power and the normally open contact S1 is disconnected. At this time, the output of the battery pack BT1 is cut off. When the battery pack BT1 is cut off, the power manager U3 intervenes and controls the conduction of the battery pack BT2 through the field effect transistor Q3 to provide continuous power to the vehicle, ensuring the smooth driving of the vehicle when going uphill or carrying cargo. By detecting the low-voltage state of the battery pack BT1, the connection or disconnection of the battery pack BT2 and the battery pack BT1 is controlled. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a circuit distribution diagram of the utility model. DETAILED DESCRIPTION

[0019] The utility model uses a power conversion control system for dual battery compartments to control the low voltage of the battery pack BT1 through the transistor Q1 and the resistor R1, and prompts it through the indicator light L1. When the battery pack BT1 is in a low voltage state, the triggering of the transistor Q1 controls the conduction of the thyristor U2 so that the battery pack BT2 supplements the voltage to the battery pack BT1, ensuring the stability of the vehicle output voltage. The specific description of the scheme is given below through specific embodiments.

[0020] Reference Figure 1 A power conversion control system for a dual battery compartment, comprising:

[0021] The first power supply unit includes a diode D3, a diode D4, a thyristor U1, a normally open contact S1 and a battery pack BT1.

[0022] In the first power supply, the positive terminal of the diode D3 is respectively connected to one end of the power supply terminal J1 and the negative terminal of the thyristor U1, the negative terminal of the diode D3 is connected to the positive terminal of the diode D4, the negative terminal of the diode D4 is respectively connected to the positive terminal of the thyristor U1, the positive terminal of the battery pack BT1 and one end of the normally open contact S1, the other end of the normally open contact S1 is connected to pin 1 of the thyristor U1, the negative terminal of the battery pack BT1 is connected to the other end of the power supply terminal J1, and the triggering of the thyristor U1 controls the power output of the battery pack BT1.

[0023] The low voltage detection unit includes a resistor R1, a transistor Q1 and an indicator light L1.

[0024] In the low voltage detection unit, one end of the resistor R1 is connected to the positive terminal of the diode D3, the other end of the resistor R1 is respectively connected to the collector terminal and the base terminal of the transistor Q1, the emitter terminal of the transistor Q1 is connected to the positive terminal of the indicator light L1, and the other end of the indicator light L1 is connected to the negative terminal of the battery pack BT1. The transistor Q1 and the resistor R1 control the low voltage occurring in the battery pack BT1.

[0025] The delay trigger unit includes a relay T, a transistor Q4, a diode D2, a capacitor C2 and a resistor R2.

[0026] In the delay trigger unit, one end of the relay T is respectively connected to one end of the resistor R1, the negative end of the diode D2 and one end of the resistor R2, the other end of the relay T is connected to the collector end of the transistor Q4, the base end of the transistor Q4 is respectively connected to the positive end of the diode D2, one end of the capacitor C2 and the other end of the resistor R2, the other end of the capacitor C2 is respectively connected to the emitter end of the transistor Q4 and the negative end of the battery pack BT1, and the capacitor C2 and the resistor R2 delay the shutdown of the low voltage appearing in the battery pack BT1.

[0027] The second power supply unit includes a diode D1, a thyristor U2 and a battery pack BT2.

[0028] In the second power supply unit, the positive terminal of the diode D1 is connected to one end of the resistor R1, the negative terminal of the diode D1 is connected to the negative terminal of the thyristor U2, the positive terminal of the thyristor U2 is respectively connected to the negative terminal of the diode D3 and the positive terminal of the battery pack BT2, the pin 1 of the thyristor U2 is connected to the emitter terminal of the transistor Q1, the negative terminal of the battery pack BT2 is connected to the negative terminal of the indicator light L1, and the triggering of the thyristor U2 controls the power output of the battery pack BT2.

[0029] The power conversion unit includes a capacitor C1, a power manager U3 and a field effect transistor Q3.

[0030] In the power supply conversion unit, one end of the capacitor C1 is respectively connected to pin 5 of the power manager U3 and the positive end of the battery pack BT1, and the other end of the capacitor C1 is respectively connected to one end of the output terminal J2, the negative end of the battery pack BT2, and pin 2 and pin 3 of the power manager U3. Pin 1 of the power manager U3 is connected to pin 2 of the field effect transistor Q3, and pin 3 of the field effect transistor Q3 is respectively connected to the negative end of the diode D1 and the other end of the output terminal J2. Pin 1 of the field effect transistor Q3 is connected to the positive end of the thyristor U2. The power manager U3 controls the on / off of the battery pack BT2, so that the battery pack BT2 is turned on when the battery pack BT1 is powered off.

[0031] Working principle description: When the battery pack BT1 and the battery pack BT2 need to be charged, the power is transmitted unidirectionally through the power supply terminal J1, the diode D3 and the diode D4;

[0032] When the vehicle is controlled to move, the normally open contact S1 is in a closed state, and the power of the battery pack BT1 is output through the output terminal J2 to drive the movement of the vehicle; during the driving of the vehicle, if the indicator light L1 is on, it is determined that the battery pack BT1 is in a low voltage state. At this time, the transistor Q1 is turned on to control the conduction of the battery pack BT2, and the battery pack BT2 supplements the voltage to the battery pack BT1. During the voltage supplement process, the capacitor C2 and the resistor R2 time the low voltage of the battery pack BT1. Once the set time is exceeded, the relay T loses power and controls the normally open contact S1 to be disconnected. When the battery pack BT1 is cut off, the power manager U3 intervenes and controls the conduction of the battery pack BT2 through the field effect transistor Q3 to provide continuous power to the vehicle, ensuring smooth driving of the vehicle when going uphill or carrying cargo. If the low voltage state of the battery pack BT1 does not exceed the set time, the transistor Q1 cuts off the conduction of the thyristor U2, so that the battery pack BT1 is in normal discharge, ensuring that when the battery pack BT1 is in a short-term low voltage state, the battery pack BT2 intervenes to supplement the voltage of the battery pack BT1. Conversely, when the low voltage state is for a long time, the output of the battery pack BT1 is cut off and the output of the battery pack BT2 is turned on.

[0033] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings; however, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, various equivalent transformations can be made to the technical scheme of the present invention, and these equivalent transformations all belong to the protection scope of the present invention.

Claims

1. A power conversion control system for a dual battery compartment, characterized in that: include: The first power supply unit controls the power output of the battery pack BT1 by triggering the thyristor U1. The low voltage detection unit controls the low voltage of the battery pack BT1 through transistor Q1 and resistor R1. The delay trigger unit delays the shutdown of the low voltage of the battery pack BT1 through the capacitor C2 and the resistor R2. The second power supply unit controls the power output of the battery pack BT2 by triggering the thyristor U2. The power supply conversion unit controls the on / off of the battery pack BT2 through the power manager U3, so that the battery pack BT2 is turned on when the battery pack BT1 is powered off.

2. A power conversion control system for a dual battery compartment according to claim 1, characterized in that: The first power supply includes a diode D3, a diode D4, a thyristor U1, a normally open contact S1 and a battery pack BT1, wherein the positive terminal of the diode D3 is respectively connected to one end of the power supply terminal J1 and the negative terminal of the thyristor U1, the negative terminal of the diode D3 is connected to the positive terminal of the diode D4, the negative terminal of the diode D4 is respectively connected to the positive terminal of the thyristor U1, the positive terminal of the battery pack BT1 and one end of the normally open contact S1, the other end of the normally open contact S1 is connected to pin 1 of the thyristor U1, and the negative terminal of the battery pack BT1 is connected to the other end of the power supply terminal J1.

3. A power conversion control system for a dual battery compartment according to claim 1, characterized in that: The low voltage detection unit includes a resistor R1, a transistor Q1 and an indicator light L1, wherein one end of the resistor R1 is connected to the positive terminal of the diode D3, the other end of the resistor R1 is respectively connected to the collector terminal and the base terminal of the transistor Q1, the emitter terminal of the transistor Q1 is connected to the positive terminal of the indicator light L1, and the other end of the indicator light L1 is connected to the negative terminal of the battery pack BT1.

4. A power conversion control system for a dual battery compartment according to claim 1, characterized in that: The delay trigger unit includes a relay T, a transistor Q4, a diode D2, a capacitor C2 and a resistor R2, wherein one end of the relay T is respectively connected to one end of the resistor R1, the negative end of the diode D2 and one end of the resistor R2, the other end of the relay T is connected to the collector end of the transistor Q4, the base end of the transistor Q4 is respectively connected to the positive end of the diode D2, one end of the capacitor C2 and the other end of the resistor R2, and the other end of the capacitor C2 is respectively connected to the emitter end of the transistor Q4 and the negative end of the battery pack BT1.

5. The power conversion control system for a dual battery compartment according to claim 1, characterized in that: The second power supply unit includes a diode D1, a thyristor U2 and a battery pack BT2, wherein the positive terminal of the diode D1 is connected to one end of the resistor R1, the negative terminal of the diode D1 is connected to the negative terminal of the thyristor U2, the positive terminal of the thyristor U2 is respectively connected to the negative terminal of the diode D3 and the positive terminal of the battery pack BT2, the pin 1 of the thyristor U2 is connected to the emitter terminal of the transistor Q1, and the negative terminal of the battery pack BT2 is connected to the negative terminal of the indicator light L1.

6. A power conversion control system for a dual battery compartment according to claim 1, characterized in that: The power supply conversion unit includes a capacitor C1, a power manager U3 and a field effect transistor Q3, wherein one end of the capacitor C1 is respectively connected to pin 5 of the power manager U3 and the positive end of the battery pack BT1, and the other end of the capacitor C1 is respectively connected to one end of the output terminal J2, the negative end of the battery pack BT2, and pins 2 and 3 of the power manager U3. Pin 1 of the power manager U3 is connected to pin 2 of the field effect transistor Q3, and pin 3 of the field effect transistor Q3 is respectively connected to the negative end of the diode D1 and the other end of the output terminal J2, and pin 1 of the field effect transistor Q3 is connected to the positive end of the thyristor U2.