Double-battery charging and discharging circuit and electronic equipment thereof

Abstract

The utility model provides a double-battery charging and discharging circuit and electronic equipment thereof. The double-battery charging and discharging circuit comprises a system unit, a first power supply unit, a second power supply unit, a detection unit and a main control unit, the system unit is electrically connected with the first power supply unit and the second power supply unit, and the first power supply unit is electrically connected with the second power supply unit; the detection unit comprises an electric quantity detection module which is electrically connected with the first power supply unit and the second power supply unit. The main control unit is electrically connected with the first power supply unit, the second power supply unit and the electric quantity detection module and used for controlling the first power supply unit to supply power to the system unit or controlling the second power supply unit to supply power to the system unit and charging the first power supply unit according to the detection result of the electric quantity detection module. By detecting the use state of the double batteries, automatic seamless switching charging and discharging of the double batteries are achieved, the cruising ability is improved, and meanwhile the service life of the batteries is prolonged.

Description

Technical Field

[0001] This application relates to the field of battery technology, specifically to a dual-battery charging and discharging circuit and its electronic device. Background Technology

[0002] A remote controller is a wireless transmitter used to remotely control equipment. With the development of drones, drone remote controllers have also emerged as complementary technologies.

[0003] Existing drone remote controller batteries are divided into built-in fixed batteries and external removable batteries. For the former, the battery life is relatively low, and prolonged use will damage the battery's health and make it inconvenient to replace. For the latter, when the battery is dead, it needs to be removed for charging or battery replacement, and the remote controller will immediately shut down, which is not suitable for application scenarios where users need to use the remote controller for a long time. Utility Model Content

[0004] To address the aforementioned technical problems, this application provides a dual-battery charging and discharging circuit and its electronic device.

[0005] According to a first aspect of this application, a dual-battery charging and discharging circuit is proposed, comprising: a system unit, a first power supply unit, a second power supply unit, a detection unit, and a main control unit;

[0006] The system unit is electrically connected to the first power supply unit and the second power supply unit respectively, and the first power supply unit is electrically connected to the second power supply unit;

[0007] The detection unit includes a power detection module, which is electrically connected to the first power supply unit and the second power supply unit respectively, and is used to detect the power of the first power supply unit and the second power supply unit.

[0008] The main control unit is electrically connected to the first power supply unit, the second power supply unit, and the power detection module, respectively, and is used to control the first power supply unit to supply power to the system unit, or control the second power supply unit to supply power to the system unit and charge the first power supply unit according to the detection result of the power detection module.

[0009] Preferably, the first power supply unit includes a main battery and a first control switch;

[0010] The main battery is electrically connected to the power detection module, one end of the first control switch is electrically connected to the main battery, and the other end is electrically connected to the system unit;

[0011] The first control switch is electrically connected to the main control unit.

[0012] Preferably, the second power supply unit includes a secondary battery, a second control switch, a first charging chip, and a third control switch;

[0013] The secondary battery, the second control switch, and the first charging chip are sequentially electrically connected between the power detection module and the system unit, and the third control switch is electrically connected between the main battery and the system unit;

[0014] The second control switch, the first charging chip, and the third control switch are all electrically connected to the main control unit.

[0015] Preferably, it also includes a charging unit;

[0016] The detection unit further includes an access detection module, which is used to detect whether the charging unit is connected to a power source.

[0017] The access detection module and the charging unit are electrically connected to the main control unit. The main control unit is used to control the charging unit to supply power to the system unit according to the detection result of the access detection module, and to control the charging unit to charge the main battery according to the detection result of the power detection module.

[0018] Preferably, the charging unit includes a power input interface and a fourth control switch;

[0019] The power input interface is electrically connected to one end of the access detection module and one end of the fourth control switch, and the other end of the fourth control switch is electrically connected to the first charging chip.

[0020] The fourth control switch is electrically connected to the main control unit.

[0021] Preferably, the charging unit further includes a fifth control switch and a second charging chip;

[0022] The fifth control switch and the second charging chip are sequentially electrically connected between the power input interface and the auxiliary battery;

[0023] The fifth control switch and the second charging chip are electrically connected to the main control unit, and the main control unit is used to control the charging unit to charge the auxiliary battery according to the detection results of the access detection module and the detection results of the power detection module.

[0024] Preferably, the main control unit is an MCU, which performs electrical control through changes in I / O port level signals.

[0025] According to a second aspect of this application, an electronic device is proposed, comprising a dual-battery charging and discharging circuit as described above.

[0026] Preferably, the electronic device is a drone remote controller.

[0027] Preferably, the main battery is a built-in fixed battery, and the auxiliary battery is an externally embedded removable battery.

[0028] Compared with existing technologies, the beneficial results of this application are as follows: The main control unit connects the first power supply unit, the second power supply unit, the detection unit, and the charging unit. During battery discharge, the main control unit detects the charge levels of the main battery and the auxiliary battery through the charge detection module, and controls the selection of the main battery or the auxiliary battery to supply power to the system unit. Simultaneously, the auxiliary battery can charge the main battery while supplying power to the system unit, enabling seamless switching between the two batteries for uninterrupted battery life, effectively protecting the health of the main battery and improving its lifespan. During battery charging, the main control unit detects whether a power input interface is connected through the detection module, thereby controlling the external power supply to power the system unit. Simultaneously, the charge detection module can detect the charge levels of the main battery and the auxiliary battery, allowing for different priorities in charging. This application achieves automatic and seamless switching between charging and discharging of the two batteries by detecting their usage status, which not only improves battery life but also extends battery life. Attached Figure Description

[0029] The accompanying drawings are included to provide a further understanding of the embodiments and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments and, together with the description, serve to explain the principles of this application. Other embodiments and many anticipated advantages of these embodiments will be readily recognized as they become better understood through reference to the following detailed description. Elements in the drawings are not necessarily to scale. The same reference numerals refer to corresponding similar parts.

[0030] Figure 1 This is a schematic block diagram of a dual-battery charging and discharging circuit according to an embodiment of this application;

[0031] Figure 2 This is a circuit diagram of a dual-battery charging and discharging circuit according to a specific embodiment of this application.

[0032] The meanings of the numbers in the diagram are as follows: 100, Dual-battery charging and discharging circuit; 10, System unit; 20, First power supply unit; 201, Main battery; 202, First control switch; 30, Second power supply unit; 301, Auxiliary battery; 302, Second control switch; 303, First charging chip; 304, Third control switch; 40, Detection unit; 401, Power detection module; 402, Access detection module; 50, Charging unit; 501, Power input interface; 502, Fourth control switch; 503, Fifth control switch; 504, Second charging chip; 60, Main control unit. Detailed Implementation

[0033] In the following detailed description, reference is made to the accompanying drawings, which form part of the detailed description and illustrate illustrative specific embodiments in which the present application may be practiced. In this regard, directional terms such as “top,” “bottom,” “left,” “right,” “up,” “down,” etc., are used with reference to the orientation of the described figures. Because components of the embodiments can be positioned in several different orientations, directional terms are used for illustrative purposes and are by no means limiting. It should be understood that other embodiments may be utilized or logical changes may be made without departing from the scope of the present application. Therefore, the following detailed description should not be taken in a limiting sense, and the scope of the present application is defined by the appended claims.

[0034] Furthermore, it should be understood that in the following description, "circuit" refers to a conductive loop consisting of at least one element or sub-circuit connected by electrical or electromagnetic connections. When an element or circuit is said to be "connected" to another element or "connected" between two nodes, it can be directly coupled or connected to another element, or there may be intermediate elements. The connection between elements can be physical, logical, or a combination thereof. Conversely, when an element is said to be "directly coupled to" or "directly connected" to another element, it means that there are no intermediate elements between them.

[0035] According to the first aspect of this application, a dual-battery charging and discharging circuit is proposed. Figure 1 A schematic block diagram of a dual-battery charging and discharging circuit according to an embodiment of this application is shown, as follows: Figure 1 As shown, the dual-battery charging and discharging circuit 100 includes a system unit 10, a first power supply unit 20, a second power supply unit 30, a detection unit 40, a charging unit 50, and a main control unit 60.

[0036] System unit 10 is electrically connected to the first power supply unit 20 and the second power supply unit 30, respectively. The first power supply unit 20 and the second power supply unit 30 can switch to supply power to system unit 10. The first power supply unit 20 is electrically connected to the second power supply unit 30, and the second power supply unit 30 can supply power to the first power supply unit 20. Charging unit 50 is electrically connected to the second power supply unit 30, and can charge the second power supply unit 30 while simultaneously supplying power to system unit 10. Detection unit 40 is electrically connected to the first power supply unit 20, the second power supply unit 30, and the charging unit 50, respectively. Detection unit 40 is used to detect the power levels of the first power supply unit 20 and the second power supply unit 30, and to detect the connection status of the charging unit 50. The main control unit 60 is electrically connected to the first power supply unit 20, the second power supply unit 30, the detection unit 40, and the charging unit 50, respectively. The main control unit 60 is used to control the first power supply unit 20 to supply power to the system unit 10, or to control the second power supply unit 30 to supply power to the system unit 10 and charge the first power supply unit 20, based on the power detection result of the detection unit 40. The main control unit 60 is also used to control the charging unit 50 to supply power to the system unit 10, based on the access detection result of the detection unit 40, and to control the charging unit 50 to charge the first power supply unit 20 or the second power supply unit 30 with different priorities based on the power detection result of the detection unit 40.

[0037] Specifically, Figure 2 A circuit diagram of a dual-battery charging and discharging circuit according to a specific embodiment of this application is shown, as follows: Figure 2 As shown, the detection unit 40 includes a power detection module 401, and the first power supply unit 20 includes a main battery 201 and a first control switch 202. The main battery 201 is electrically connected to one end of both the power detection module 401 and the first control switch 202, and the other end of the first control switch 202 is electrically connected to the system unit 10. Both the power detection module 401 and the first control switch 202 are electrically connected to the main control unit 60.

[0038] Thus, the main control unit 60 can control the first control switch 202 to turn on based on the power detection result of the power detection module 401 on the main battery 201, so that the main battery 201 can supply power to the system unit 10.

[0039] In this embodiment, when the power detection module 401 detects that the power level of the main battery 201 is greater than a preset power threshold of 60%, the main control unit 60 controls the first control switch 202 to turn on. In other embodiments, the preset power threshold can be set according to actual needs, and is not limited here.

[0040] In this embodiment, the main control unit 60 is an MCU. The MCU performs electrical control, including but not limited to the first control switch 202, through changes in I / O port level signals, which will not be described in detail later.

[0041] In this embodiment, the first control switch 202 is a diode. In other embodiments, the first control switch can also be other switching components such as a MOSFET or a transistor (triode), and there is no limitation here.

[0042] Continue to refer to Figure 2 The second power supply unit 30 includes a secondary battery 301, a second control switch 302, a first charging chip 303, and a third control switch 304. The secondary battery 301, the second control switch 302, and the first charging chip 303 are sequentially electrically connected between the power detection module 401 and the system unit 10, and the third control switch 304 is electrically connected between the main battery 201 and the system unit 10. The second control switch 302, the first charging chip 303, and the third control switch 304 are all electrically connected to the main control unit 60.

[0043] Thus, when the power detection module 401 detects that the secondary battery 301 is in a usable state (inserted state) and the power level of the main battery 201 is lower than a preset power threshold, the main control unit 60 controls the first control switch 202 to turn off, and simultaneously controls the second control switch 302 to turn on and the first charging chip 303 to wake up, so that the secondary battery 301 supplies power to the system unit 10. Furthermore, the main control unit 60 can also control the third control switch 304 to turn on, so that the secondary battery 301 simultaneously charges the main battery 201.

[0044] In this embodiment, both the second control switch 302 and the third control switch 304 are MOSFETs. In other embodiments, the second and third control switches can also be other switching components such as transistors (triodes), and there is no limitation here.

[0045] In this embodiment, the first charging chip 303 is a PL5500 charging chip. In other embodiments, the first charging chip can be selected from different models according to actual needs, and no limitation is made here.

[0046] Continue to refer to Figure 2 The detection unit 40 also includes an access detection module 402, and the charging unit 50 includes a power input interface 501 and a fourth control switch 502. The power input interface 501 is electrically connected to one end of the access detection module 402 and the fourth control switch 502, respectively. The other end of the fourth control switch 502 is electrically connected to the first charging chip 303. Both the access detection module 402 and the fourth control switch 502 are electrically connected to the main control unit 60.

[0047] Thus, when the access detection module 402 detects that an external power source is connected to the power input interface 501, the main control unit 60 controls the fourth control switch 502 to turn on, and simultaneously wakes up the first charging chip 303, enabling the external power source to supply power to the system unit 10. Furthermore, when the power detection module 401 detects that the power level of the main battery 201 is lower than a preset power threshold, the main control unit 60 controls the third control switch 304 to turn on, allowing the external power source to simultaneously charge the main battery 201.

[0048] In this embodiment, the power input interface 501 adopts a Type C port. In other embodiments, different charging interfaces can be selected according to implementation requirements, and no restrictions are imposed here.

[0049] In this embodiment, the fourth control switch 502 is a MOSFET. In other embodiments, the fourth control switch can also be other switching components such as transistors (triodes), and there is no limitation here.

[0050] Continue to refer to Figure 2 The charging unit 50 also includes a fifth control switch 503 and a second charging chip 504. The fifth control switch 503 and the second charging chip 504 are electrically connected sequentially between the power input interface 501 and the auxiliary battery 301, and the fifth control switch 503 and the second charging chip 504 are electrically connected to the main control unit 60.

[0051] Thus, the main control unit 60 can control the charging unit 50 to charge the auxiliary battery 301 simultaneously based on the detection results of the access detection module 402 and the detection results of the power detection module 401.

[0052] In this embodiment, when an external power source is connected and a secondary battery 301 is inserted: if the power level of the main battery 201 is lower than a preset power threshold, the main control unit 60 controls the fourth control switch 502 and the third control switch 304 to be turned on and the fifth control switch 503 to be turned off, and the external power source prioritizes charging the main battery 201; if the power level of the main battery 201 is higher than the preset power threshold, the main control unit 60 controls the fourth control switch 502 and the fifth control switch 503 to be turned on and the third control switch 304 to be turned off, and at the same time wakes up the second charging chip 504, and the external power source prioritizes charging the secondary battery 301.

[0053] In this embodiment, the fifth control switch 503 is a MOSFET. In other embodiments, the fifth control switch can also be other switching components such as transistors (triodes), and there is no limitation here.

[0054] In this embodiment, the second charging chip 504 is a LYF62001 charging chip, which supports the PD fast charging protocol. In other embodiments, different models of the second charging chip can be selected according to actual needs, and no limitation is made here.

[0055] In summary, the working principle of the dual-battery charging and discharging circuit 100 proposed in this application is as follows:

[0056] During power supply, when both the main battery 201 and the auxiliary battery 301 are present, the power detection module 401 detects the power level of the main battery 201. If the power level of the main battery 201 is greater than a preset power threshold, the main control unit 60 controls the first control switch 202 to turn on, and the main battery 201 supplies power to the system unit 10. If the power level of the main battery 201 is less than the preset power threshold, the main control unit 60 controls the first control switch 202 to turn off and the second control switch 302 to turn on, and the auxiliary battery 301 supplies power to the system unit 10. When the power detection module 401 cannot detect the power level of the auxiliary battery 301 (i.e., the auxiliary battery 301 is removed), the main control unit 60 immediately switches back to the main battery 201 to supply power to the system unit 10, achieving seamless power switching. When the access detection module 402 detects that an external power source is connected to the power input interface 501, the main control unit 60 controls the first control switch 202 and the second control switch 302 to turn off and controls the fourth control switch 502 to turn on, and the external power source supplies power to the system unit 10.

[0057] During the charging process, when the main battery 201 and the auxiliary battery 301 are present at the same time, and the access detection module 402 detects that the power input interface 501 is not connected to an external power source, if the power detection module 401 detects that the power of the main battery 201 is less than a preset power threshold, the main control unit 60 controls the first control switch 202 to turn off and the second control switch 302 and the third control switch 304 to turn on, so that the auxiliary battery 301 charges the main battery 201. When both the main battery 201 and the secondary battery 301 are present, and the detection module 402 detects that the power input interface 501 is connected to an external power source, if the power level of the main battery 201 is less than a preset power threshold, the main control unit 60 controls the fourth control switch 502 and the third control switch 304 to be turned on, and the fifth control switch 503 and the second control switch 302 to be turned off, so that the external power source prioritizes charging the main battery 201; if the power level of the main battery 201 is greater than the preset power threshold, the main control unit 60 controls the fourth control switch 502 and the fifth control switch 503 to be turned on, and the second control switch 302 and the third control switch 304 to be turned off, so that the external power source prioritizes charging the secondary battery 301.

[0058] In this way, by detecting the power status and usage status of the two batteries, this application can achieve automatic and seamless switching between charging and discharging of the two batteries, which not only improves the battery life, but also effectively protects the health of the main battery and extends the battery's lifespan.

[0059] According to a second aspect of this application, an electronic device is also proposed, comprising a dual-battery charging and discharging circuit as described in the first aspect above.

[0060] In one specific embodiment, the electronic device is a drone remote controller. In other embodiments, the electronic device may also be a remote controller for unmanned vehicles, unmanned ships, or other electronic devices; no limitation is made here.

[0061] In one specific embodiment, the main battery is a built-in fixed battery of the drone remote controller, and the auxiliary battery is an externally embedded removable battery of the drone remote controller. In other embodiments, the main battery may also be an externally embedded removable battery, and the auxiliary battery may also be a built-in fixed battery; there is no limitation here.

[0062] It is obvious that those skilled in the art can make various modifications and alterations to the embodiments of this application without departing from the spirit and scope of this application. In this way, this application also aims to cover such modifications and alterations if they fall within the scope of the claims and their equivalents. The word "comprising" does not exclude the presence of other elements or steps not listed in the claims. The simple fact that certain measures are described in mutually different dependent claims does not indicate that a combination of these measures cannot be used for profit. Any reference numerals in the claims should not be considered limiting in scope.

Claims

1. A dual battery charging and discharging circuit, characterized by comprising: The application relates to a double-battery charging and discharging circuit. The system unit is electrically connected with the first power supply unit and the second power supply unit respectively, and the first power supply unit is electrically connected with the second power supply unit. The detection unit comprises an electric quantity detection module, which is electrically connected with the first power supply unit and the second power supply unit respectively and is used for detecting the electric quantity of the first power supply unit and the second power supply unit. The main control unit is electrically connected with the first power supply unit, the second power supply unit and the electric quantity detection module respectively, and is used for controlling the first power supply unit to supply power to the system unit or controlling the second power supply unit to supply power to the system unit and charge the first power supply unit according to the detection result of the electric quantity detection module. The first power supply unit comprises a main battery and a first control switch, the main battery is electrically connected with the electric quantity detection module, one end of the first control switch is electrically connected with the main battery, and the other end is electrically connected with the system unit, and the first control switch is electrically connected with the main control unit. The second power supply unit comprises a secondary battery, a second control switch, a first charging chip and a third control switch, the secondary battery, the second control switch and the first charging chip are sequentially electrically connected between the electric quantity detection module and the system unit, the third control switch is electrically connected between the main battery and the system unit, and the second control switch, the first charging chip and the third control switch are electrically connected with the main control unit respectively. The application further comprises a charging unit, the detection unit further comprises an access detection module, the access detection module is used for detecting whether the charging unit is connected with a power supply, the access detection module and the charging unit are electrically connected with the main control unit respectively, the main control unit is used for controlling the charging unit to supply power to the system unit according to the detection result of the access detection module and controlling the charging unit to charge the main battery according to the detection result of the electric quantity detection module. The charging unit comprises a power input interface and a fourth control switch, the power input interface is electrically connected with the access detection module and one end of the fourth control switch respectively, the other end of the fourth control switch is electrically connected with the first charging chip, and the fourth control switch is electrically connected with the main control unit. The charging unit further comprises a fifth control switch and a second charging chip, the fifth control switch and the second charging chip are sequentially electrically connected between the power input interface and the secondary battery, and the fifth control switch and the second charging chip are electrically connected with the main control unit respectively, and the main control unit is used for controlling the charging unit to charge the secondary battery according to the detection result of the access detection module and according to the detection result of the electric quantity detection module. The main control unit is an MCU, and the MCU controls electricity through I / O port level signal change.

2. The dual battery charging and discharging circuit of claim 1, wherein, The application relates to a double-battery charging and discharging circuit.

3. An electronic device, comprising: The application relates to a double-battery charging and discharging circuit.

4. The electronic device of claim 3, wherein, The electronic device is a remote controller of a drone.

5. The electronic device of claim 4, wherein, The main battery is a built-in fixed battery, and the auxiliary battery is an externally embedded detachable battery.

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