Double-battery parallel control system

Abstract

The utility model relates to the technical field of power management, and discloses a double-battery parallel control system, which comprises a battery input module, a first battery module and a second battery module, the SOC monitoring module is connected with the output end of the battery input module and used for monitoring the electric quantity states of the first battery module and the second battery module in real time; and the switching control module is connected between the first battery module and the second battery module and is used for controlling the first battery module or the second battery module to select one and continuously supply power to the SOC monitoring module. Through the design of the switching control module, the cooperative working mode of the first battery module and the second battery module is adopted, when the battery of the first battery module needs to be disassembled, the second battery automatically takes over the system in a seamless mode, the phenomenon of instantaneous power failure is avoided, 24-hour uninterrupted operation is ensured, and normal operation of the system is guaranteed.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of power management, and particularly relates to a double-battery parallel control system. BACKGROUND

[0002] Power management technology is a core technology for realizing efficient distribution, storage and utilization of electric energy through circuit design and control strategy. The core goal is to improve energy utilization, prolong device endurance and optimize system reliability under the premise of ensuring stable operation of equipment.

[0003] With the development of science and technology, many key fields have put forward very high requirements for power continuity, such as medical equipment, communication base stations, electronic consumer fields, industrial control systems, etc., which need to meet 24-hour uninterrupted power supply. However, in the traditional single-battery power supply system, when the battery fails or is replaced, it is easy to cause instantaneous power failure of the system, which seriously affects the normal operation of the equipment and even causes safety hazards. CONTENT OF THE INVENTION

[0004] In order to solve the deficiencies of the prior art, the application provides a double-battery parallel control system. Through the design of a switching control module, a cooperative working mode of a first battery module and a second battery module is adopted. When the battery of the first battery module needs to be disassembled, the second battery automatically takes over the system seamlessly, avoiding the phenomenon of instantaneous power failure, thereby ensuring 24-hour uninterrupted operation and guaranteeing normal operation of the system.

[0005] The technical effects achieved by the application are realized through the following aspects:

[0006] The application provides a double-battery parallel control system, which comprises

[0007] a battery input module, a SOC monitoring module, and a switching control module.

[0008] The battery input module comprises a first battery module and a second battery module connected in parallel.

[0009] The SOC monitoring module is connected to the output end of the battery input module and is used for monitoring the state of charge of the first battery module and the second battery module in real time.

[0010] In some implementations, the switching control module comprises a resistor R6 and a transistor Q4.

[0011] The resistor R6 is connected between the base of the transistor Q4 and the first battery module.

[0012] The collector of the transistor Q4 is connected with the second battery module, and the emitter of the transistor Q4 is grounded.

[0013] In some implementations, the first battery module includes a first battery, a transistor Q5, a resistor R4, and a resistor R1.

[0014] The resistor R4 and the resistor R1 are connected in series, one end of the resistor R4 is connected between the positive electrode of the first battery and the source of the transistor Q5, and one end of the resistor R1 is grounded.

[0015] The source of the transistor Q5 is connected with the positive electrode of the first battery, the drain of the transistor Q5 is connected with the SOC monitoring module, and the gate of the transistor Q5 is connected between the resistor R4 and the resistor R1.

[0016] In some implementations, the second battery module includes a second battery, a transistor Q6, a resistor R7, and a resistor R8.

[0017] The resistor R7 and the resistor R8 are connected in series, one end of the resistor R7 is connected between the positive electrode of the second battery and the source of the transistor Q6, and the resistor R8 is connected between the collector of the transistor Q4 and the gate of the transistor Q6.

[0018] The source of the transistor Q6 is connected with the positive electrode of the second battery, the drain of the transistor Q6 is connected with the SOC monitoring module, and the gate of the transistor Q6 is connected between the resistor R7 and the resistor R8.

[0019] In some implementations, the first battery module further includes a capacitor C7, one end of the capacitor C7 is connected with the gate of the transistor Q5, and the other end of the capacitor C7 is grounded.

[0020] In some implementations, the first battery module further includes a first voltage stabilizing filter unit, the first voltage stabilizing filter unit includes a capacitor C1 and a capacitor C4, one end of the capacitor C1 and the capacitor C4 is connected between the drain of the transistor Q5 and the SOC monitoring module, and the other end of the capacitor C1 and the capacitor C4 is grounded.

[0021] In some implementations, the second battery module further includes a capacitor C8, one end of the capacitor C8 is connected with the gate of the transistor Q6, and the other end of the capacitor C8 is grounded.

[0022] In some implementations, the second battery module further comprises a second voltage stabilizing filter unit, the second voltage stabilizing filter unit comprises a capacitor C2 and a capacitor C3, one end of the capacitor C2 and the capacitor C3 are connected between the drain of the transistor Q6 and the SOC monitoring module, the other end of the capacitor C2 and the capacitor C3 are grounded.

[0023] In some implementations, the first battery module further comprises a diode D1, the anode of the diode D1 is connected with the positive electrode of the first battery, the cathode of the diode D1 is connected with the drain of the transistor Q5.

[0024] In some implementations, the second battery module further comprises a diode D2, the anode of the diode D2 is connected with the positive electrode of the second battery, the cathode of the diode D2 is connected with the drain of the transistor Q6.

[0025] In summary, the present application has at least the following advantages:

[0026] 1. The dual battery parallel control system provided by the present application controls the first battery module and the second battery module to supply power alternatively and uninterruptedly through the switching control module, realizes the cooperative work of the first battery module and the second battery, and when the battery of the first battery module needs to be disassembled or is broken or runs out of power, the second battery module automatically takes over the power supply seamlessly, avoids the phenomenon of instantaneous power failure, thereby ensuring 24-hour uninterrupted operation, ensuring the normal operation of the system, and improving the reliability of the system.

[0027] 2. The dual battery parallel control system provided by the present application optimizes the switching logic of the first battery module and the second battery module, ensures continuous power supply of the system when the first battery is replaced, and effectively reduces the structural complexity and cost. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 FIG. 1 is a structural schematic diagram of a dual battery parallel control system in Embodiment 1 of the present application.

[0029] Figure 2 FIG. 2 is a structural schematic diagram of a dual battery parallel control system in Embodiment 2 of the present application.

[0030] Figure 3 FIG. 3 is a structural schematic diagram of an audio device in Embodiment 3 of the present application.

[0031] MARKS IN THE DRAWINGS

[0032] 100, dual battery parallel control system, 11, first battery module, B1, first battery, 12, second battery module, B2, second battery; 2, SOC monitoring module; 3, switching control module; 200, audio device. DETAILED DESCRIPTION

[0033] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. The described embodiments are part of the embodiments of the present application, rather than all the embodiments of the present application.

[0034] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by a person of ordinary skill in the art without making creative efforts based on the embodiments in the present application are within the scope of protection of the present application.

[0035] Embodiment 1:

[0036] Please refer to the accompanying Figure 1 The dual-battery parallel control system of the present application comprises a battery input module, an SOC monitoring module 2 and a switching control module 3.

[0037] The battery input module comprises a first battery module 11 and a second battery module 12 in parallel. The first battery module 11 is a main battery power supply module. The second battery module 12 is a backup battery power supply module, which is used to assist the first battery module 11, and seamlessly takes over the first battery module 11 and supplies power to the SOC monitoring module 2 when the first battery module 11 is powered off.

[0038] The SOC monitoring module 2 is connected to the output end of the battery input module, and is used to monitor the state of charge of the first battery module 11 and the second battery module 12 in real time.

[0039] The switching control module 3 is connected between the first battery module 11 and the second battery module 12, and is used to control the first battery module 11 or the second battery module 12 to supply power to the SOC monitoring module 2 alternatively and uninterruptedly.

[0040] The dual-battery parallel control system 100 in the present embodiment uses the switching control module 3 to control the first battery module 11 or the second battery module 12 in the battery input module to supply power to the SOC monitoring module 2 uninterruptedly, i.e., when the first battery module 11 supplies power normally, the second battery module 12 does not work; when the first battery module 11 needs to be disassembled or is out of power or is damaged, the second battery module 12 can seamlessly supply power to the SOC monitoring module 2, avoiding the phenomenon of instantaneous power failure, realizing 24-hour uninterrupted operation, and further ensuring the normal operation of the system and improving the reliability of the system.

[0041] In addition, in this design, by optimizing the switching logic of the battery module, the system can continue to supply power when the first battery module 11 is replaced, thereby effectively reducing the structural complexity and cost.

[0042] Embodiment 2:

[0043] The difference between this embodiment and embodiment 1 is that, as shown in Figure 2 The switching control module 3 of this embodiment includes a resistor R6 and a transistor Q4; the resistor R6 is connected between the base of the transistor Q4 and the first battery module 11; the collector of the transistor Q4 is connected with the second battery module 12, and the emitter of the transistor Q4 is grounded.

[0044] The first battery module 11 includes a first battery B1, a transistor Q5, a resistor R4 and a resistor R1; the resistor R4 and the resistor R1 are connected in series, one end of the resistor R4 is connected between the positive electrode of the first battery B1 and the source of the transistor Q5, and one end of the resistor R1 is grounded; the source of the transistor Q5 is connected with the positive electrode of the first battery B1, the drain of the transistor Q5 is connected with the SOC monitoring module 2, and the gate of the transistor Q5 is connected between the resistor R4 and the resistor R1.

[0045] The second battery module 12 includes a second battery, a transistor Q6, a resistor R7 and a resistor R8; the resistor R7 and the resistor R8 are connected in series, one end of the resistor R7 is connected between the positive electrode of the second battery and the source of the transistor Q6, and the resistor R8 is connected between the collector of the transistor Q4 and the gate of the transistor Q6; the source of the transistor Q6 is connected with the positive electrode of the second battery, the drain of the transistor Q6 is connected with the SOC monitoring module 2, and the gate of the transistor Q6 is connected between the resistor R7 and the resistor R8.

[0046] When the first battery module 11 supplies power, the voltage of the first battery B1 is supplied to the source of the transistor Q5, and the other side is supplied to the gate of the transistor Q5 through the resistor R4, and the resistor R1 is the pull-down resistor of the gate of the transistor Q5, so that the normal working transistor Q5 is turned on to supply power to the SOC monitoring module 2. At the same time, when the first battery B1 supplies power, the other voltage is supplied to the base of the transistor Q4 through the resistor R6, so that the collector and the emitter of the transistor Q4 are turned on, the gate voltage of the transistor Q6 is pulled down through the resistor R8, so that the transistor Q6 is not turned on, and the second battery of the second battery module 12 will not be consumed.

[0047] It is worth mentioning that when the first battery B1 needs to be replaced, the voltage of the resistor R6 is disconnected instantaneously, causing the transistor Q4 to be unable to conduct, and thus the gate voltage of the transistor Q6 is not pulled down. The resistor R8 is the bias resistor of the transistor Q6, and the drain output voltage of the transistor Q6 is realized, so that the second battery can normally work to supply power to the SOC monitoring module 2. When the first battery B1 is installed in the device again, the second battery is switched to an inoperative state.

[0048] Through the above switching logic, the first battery B1 and the second battery B2 work cooperatively. When the first battery needs to be removed or is broken or out of power, the second battery B2 automatically takes over the power supply seamlessly, avoiding the phenomenon of instantaneous power failure, thereby ensuring the 24-hour operation of the first battery B1 and the second battery B2 alternatively and uninterruptedly, effectively ensuring the normal operation of the system and improving the reliability of the system. The dual-battery parallel control system 100 in the embodiment ensures continuous power supply of the system when the first battery is replaced by optimizing the switching logic of the first battery module 11 and the second battery module 12, and the overall design is simple and practical, which can effectively reduce the structural complexity and cost.

[0049] In addition, since the second battery B2 is a backup battery for assisting the first battery B1 to temporarily take over the power supply when an abnormality occurs, the second battery B2 can be used for several years after being charged once, and the SOC monitoring module 2 will also judge the power of the second battery B2. When the second battery is out of power, an external power supply will be used to charge it.

[0050] In some embodiments, the first battery module 11 further includes a capacitor C7, one end of the capacitor C7 being connected to the gate of the transistor Q5, and the other end of the capacitor C7 being grounded. Through this setting, the capacitor C7 is a filter capacitor for the gate of the transistor Q5, thereby ensuring the stability of the voltage point of the gate of the transistor Q5.

[0051] The first battery module 11 further includes a first voltage stabilizing and filtering unit, which includes a capacitor C1 and a capacitor C4. One end of the capacitor C1 and the capacitor C4 is connected between the drain of the transistor Q5 and the SOC monitoring module 2, and the other end of the capacitor C1 and the capacitor C4 is grounded. Through this setting, the capacitor C1 and the capacitor C4 are drain output filter capacitors of the transistor Q5, thereby removing unwanted noise and improving voltage stability. In addition, in combination with the capacitor C7, the capacitor C1 and the capacitor C4, the stability of the circuit can be greatly improved.

[0052] In some embodiments, the second battery module 12 further comprises a capacitor C8, one end of the capacitor C8 is connected to the gate of the transistor Q6, and the other end of the capacitor C8 is grounded. The second battery module 12 further comprises a second voltage stabilizing and filtering unit, the voltage stabilizing and filtering unit comprises a capacitor C2 and a capacitor C3, one end of the capacitor C2 and the capacitor C3 is connected between the drain of the transistor Q6 and the SOC monitoring module 2, and the other end of the capacitor C2 and the capacitor C3 is grounded. Through the above arrangement, the capacitor C8 is a filtering capacitor for the gate of the transistor Q6, mainly plays a role in stabilizing the gate voltage of the transistor Q6, and after the drain output voltage of the transistor Q6 is filtered by the capacitor C2 and the capacitor C3, a stable voltage is output to the SOC monitoring module 2 to work, ensuring the circuit quality of the second battery module 12.

[0053] In some embodiments, the first battery module 11 further comprises a diode D1, the anode of the diode D1 is connected to the positive electrode of the first battery, and the cathode of the diode D1 is connected to the drain of the transistor Q5.

[0054] The second battery module 12 further comprises a diode D2, the anode of the diode D2 is connected to the positive electrode of the second battery, and the cathode of the diode D2 is connected to the drain of the transistor Q6.

[0055] Through the above arrangement of the diode D1 and the diode D2, by using the one-way conduction characteristic of the diode, if the positive and negative electrodes of the battery are connected in reverse, the diode is cut off and the current path is blocked, thereby protecting the rear-end circuit from being damaged by reverse voltage. And when the battery output voltage is too high for a moment, such as inrush voltage, the diode quickly conducts to clamp the voltage at a safe value, avoiding high voltage impact on the rear-end chip or load, thereby improving the safety of the circuit.

[0056] Embodiment 3:

[0057] Based on the above-mentioned embodiments, the present embodiment provides an audio device 200 adopting the above-mentioned dual-battery parallel control system 100. Figure 3

[0058] The dual-battery parallel control system 100 in the present embodiment can significantly prolong the continuous use time of the device, when one battery runs out of power, the other battery can immediately take over, ensuring that the audio device 200 will not be interrupted due to power problems, ensuring the continuous collection of audio signals, and effectively improving the endurance.

[0059] In addition, the dual-battery parallel connection can reduce the influence of voltage fluctuation to a certain extent, meet the high requirements of the audio device 200 on the stability of the power supply, and effectively enhance the stability of the power supply.

[0060] ​In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0061] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0062] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0063] In this application, unless otherwise expressly specified and limited, "above or below" a first feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on" a first feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" a first feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0064] Although the description of this application has been made in conjunction with the specific embodiments described above, it is obvious to those skilled in the art that many substitutions, modifications, and variations can be made based on the above description. Therefore, all such substitutions, modifications, and variations are included within the spirit and scope of the appended claims.

Claims

1. A dual-battery parallel control system, characterized in that, include: The battery input module includes a first battery module and a second battery module connected in parallel; The SOC monitoring module is connected to the output terminal of the battery input module and is used to monitor the power status of the first battery module and the second battery module in real time. as well as A switching control module is connected between the first battery module and the second battery module to control either the first battery module or the second battery module to supply power to the SOC monitoring module continuously. The switching control module includes a resistor R6 and a transistor Q4; The resistor R6 is connected between the base of the transistor Q4 and the first battery module; The collector of transistor Q4 is connected to the second battery module, and the emitter of transistor Q4 is grounded. The first battery module includes a first battery, transistor Q5, resistor R4, and resistor R1; The resistor R4 is connected in series with the resistor R1, and one end of the resistor R4 is connected between the positive terminal of the first battery and the source terminal of the transistor Q5, while one end of the resistor R1 is connected to ground. The source of transistor Q5 is connected to the positive terminal of the first battery, the drain of transistor Q5 is connected to the SOC monitoring module, and the gate of transistor Q5 is connected between resistor R4 and resistor R1. The second battery module includes a second battery, transistor Q6, resistor R7, and resistor R8; The resistor R7 and the resistor R8 are connected in series, and one end of the resistor R7 is connected between the positive terminal of the second battery and the source of the transistor Q6, and the resistor R8 is connected between the collector of the transistor Q4 and the gate of the transistor Q6. The source of transistor Q6 is connected to the positive terminal of the second battery, the drain of transistor Q6 is connected to the SOC monitoring module, and the gate of transistor Q6 is connected between resistor R7 and resistor R8.

2. The dual-battery parallel control system according to claim 1, characterized in that, The first battery module also includes a capacitor C7, one end of which is connected to the gate of the transistor Q5, and the other end of which is connected to ground.

3. The dual-battery parallel control system according to claim 2, characterized in that, The first battery module further includes a first voltage regulation and filtering unit, which includes capacitor C1 and capacitor C4. One end of capacitor C1 and capacitor C4 are connected between the drain of transistor Q5 and the SOC monitoring module, and the other end of capacitor C1 and capacitor C4 are grounded.

4. The dual-battery parallel control system according to claim 1, characterized in that, The second battery module also includes a capacitor C8, one end of which is connected to the gate of the transistor Q6, and the other end of which is connected to ground.

5. The dual-battery parallel control system according to claim 4, characterized in that, The second battery module further includes a second voltage regulation and filtering unit, which includes capacitor C2 and capacitor C3. One end of capacitor C2 and capacitor C3 are connected between the drain of transistor Q6 and the SOC monitoring module, and the other end of capacitor C2 and capacitor C3 are connected to ground.

6. The dual-battery parallel control system according to claim 1, characterized in that, The first battery module further includes a diode D1, the anode of which is connected to the positive terminal of the first battery, and the cathode of which is connected to the drain of the transistor Q5.

7. The dual-battery parallel control system according to claim 1, characterized in that, The second battery module also includes a diode D2, the anode of which is connected to the positive terminal of the second battery, and the cathode of which is connected to the drain of the transistor Q6.

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