V-opening hanging plate for battery thermal switching and control method

Abstract

The invention belongs to the field of battery management, and provides a battery thermal switching V-port hanging plate and a control method in order to solve the problems that an existing V-port hanging plate is low in reliability, high in cost and the like, the V-port hanging plate comprises a battery socket, a thermal switching control circuit and a power supply interface, and the thermal switching control circuit is connected with the battery socket and the power supply interface; the hot switching control circuit is used for outputting a first battery as a main power supply when the first battery is inserted into the battery socket, and determining whether the first battery or the second battery is used as the main power supply output according to the voltage when the second battery is detected to be inserted into the battery socket. According to the invention, two high-capacity V-port batteries can be mounted at the same time, so that the cruising ability is higher; in the process of supplying power to equipment, a hot plug function, instantaneous seamless connection and second switching of a battery are realized, so that the situation of power failure in the use process of the electric equipment cannot be caused; and with cooperation of hardware as a main part and software as an auxiliary part, low-cost and high-reliability operation can be realized.

Description

Technical Field

[0001] The present invention belongs to the field of battery management, and in particular, relates to a V-shaped hanging plate for hot switching of a battery and a control method thereof. Background Art

[0002] Battery mounting plates are an accessory in the photography industry, used to fix and connect V-mount batteries. Currently, V-mount mounting plates are usually single-seat or double-seat. The V-buckle design can firmly fix the V-mount battery to prevent the battery from falling off or shaking during shooting. With large-capacity V-mount batteries, it can meet the needs of long-term shooting of photography and video equipment. The disadvantages of existing V-mount mounting plates include: 1. Traditional single-seat V-mount hanging boards are usually not equipped with built-in batteries. During use, the V-mount batteries hanging on them will slowly run out of power over time. Whether the battery is replaced after it is exhausted or during use, there will be a power outage process, which will cause the photography equipment to interrupt shooting.

[0003] 2. The V-mount plate with built-in battery single-seat mode has a low battery capacity and cannot power photographic equipment for a long time. It is also expensive, large in size, and not very practical.

[0004] 3. Traditional dual-seat V-mounted mounts usually do not have a hot-swap battery function. When the main battery runs out or is unplugged midway, a very short power-off period will occur, which may cause some power-consuming devices to reset and interrupt shooting. New mounts that can meet the hot-swap function basically use software detection and control methods, which have problems such as low reliability, complex circuits, and high costs. Summary of the invention

[0005] The embodiments of the present application provide a V-mount hanging plate for hot-switching batteries and a control method, which provide long-lasting and uninterrupted power supply for photographic and video equipment.

[0006] In a first aspect, an embodiment of the present application provides a V-shaped hanging plate for hot switching of a battery, comprising: A battery socket, a hot switching control circuit and a plurality of power supply interfaces, wherein the hot switching control circuit is respectively connected to the battery socket and the power supply interface; the hot switching control circuit is used to: when a first battery is inserted into the battery socket, use the first battery as the main power output, and when a second battery is detected to be inserted into the battery socket, determine whether to use the first battery or the second battery as the main power output according to the voltage.

[0007] Wherein, the hot switching control circuit is used for: when two batteries are inserted into the battery socket, if the voltage difference between the battery in use and the backup battery meets the preset range, the two batteries are used to supply power at the same time.

[0008] Wherein, the hot switching control circuit includes a first control circuit and a second control circuit; the hot switching control circuit is used for: when a first battery is inserted into the battery socket, the first battery is output as the main power supply through the first control circuit, and whether a second battery is inserted into the battery socket is detected through the second control circuit. When the second battery is inserted, if the voltage of the second battery is higher than the voltage of the first battery, the first battery is cut off from power supply through the first control circuit, and the second battery is used as the power supply through the second control circuit.

[0009] The hot switching control circuit includes: a transistor Q1, the drain of the transistor Q1 is respectively connected to the port VBAT1 and one end of the resistor R1, the gate of the transistor Q1 is connected to the other end of the resistor R1 and one end of the resistor R2, the drain of the transistor Q2 is connected to the other end of the resistor R2, the source of the transistor Q2 is grounded, the gate of the transistor Q2 is connected to one end of the resistor R3 and one end of the resistor R4, the other end of the resistor R4 is used to receive an enable signal, and the other end of the resistor R3 is grounded; the source of the transistor Q1 is connected to the source of the transistor Q3, the source of the transistor Q3 is also connected to the IN pin of the ideal diode controller U1, the gate of the transistor Q3 is connected to the GATE pin of the ideal diode controller U1, the drain of the transistor Q3 is respectively connected to one end of the resistor R6 and the OUT pin of the ideal diode controller U1, the other end of the resistor R6 is connected to the VS pin of the ideal diode controller U1, and the drain of the transistor Q3 is also connected to the output port VOUT; the drain of transistor Q4 is respectively connected to port VBAT2 and one end of resistor R7, the gate of transistor Q4 is connected to the other end of resistor R7 and one end of resistor R8, the drain of transistor Q6 is connected to the other end of resistor R8, the source of transistor Q6 is grounded, the gate of transistor Q6 is connected to one end of resistor R10 and one end of resistor R9, the other end of resistor R10 is used to receive an enable signal, and the other end of resistor R9 is grounded; the source of transistor Q4 is connected to the source of transistor Q5, the source of transistor Q5 is also connected to the IN pin of ideal diode controller U2, the gate of transistor Q5 is connected to the GATE pin of ideal diode controller U2, the drain of transistor Q5 is respectively connected to one end of resistor R12 and OUT pin of ideal diode controller U2, the other end of resistor R12 is connected to the VS pin of ideal diode controller U2, and the drain of transistor Q5 is also connected to output port VOUT.

[0010] Wherein, the hot switch control circuit is used to: according to the received instruction, shut down the power connection of the battery selected in the battery socket.

[0011] Among them, the power supply interface includes: dual Type-C standard power supply ports, 8VDC output port, 12VDC output port and dual D-Tap interface.

[0012] Wherein, the battery socket is a double-seat battery socket of the BP interface.

[0013] Wherein, the hot switching control circuit is used for: when two batteries are inserted into the battery socket, if the voltage difference between the battery in use and the backup battery meets the preset range, the two batteries are used for power supply at the same time; if the voltage difference between the battery in use and the backup battery does not meet the preset range, detect whether the difference between the voltage of the battery in use and the 11.6V voltage meets the preset conditions, if so, use the backup battery as the main power output, if not, still use the battery in use as the main power output.

[0014] Wherein, the output port of the hot switching control circuit includes a filter capacitor and a TVS diode.

[0015] In a second aspect, the present application provides a control method for battery hot switching, which is applied to any of the above-mentioned V-mount hanging plates, including: when a first battery is inserted into the battery socket, the hot switching control circuit uses the first battery as the main power output, and detects whether a second battery is inserted into the battery socket. When a second battery is inserted, the hot switching control circuit determines whether to use the first battery or the second battery as the main power output based on the voltage.

[0016] The V-shaped hanging plate and control method for hot switching of batteries in the embodiment of the present application have the following beneficial effects: In this application, the V-mount battery that is inserted first will first power the entire hanging board. When the V-mount battery is connected again, the hot switching control circuit determines whether to use the first battery or the second battery as the main power output according to the voltage, and finally realizes the function of hot-swappable hanging board, providing long-lasting and uninterrupted power guarantee for SLR, camera, monitor, lighting and other equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural block diagram of a V-shaped hanging plate for hot switching of batteries in an embodiment of the present application; Figure 2 This is a block diagram of a V-shaped hanging plate system for hot switching of batteries in an embodiment of the present application; Figure 3 This is a schematic diagram of the connection between the V-mount hanging plate and the V-mount battery for hot switching of the battery in the embodiment of the present application; Figure 4 This is a control logic flow chart of the V-mount hanging plate for hot switching of batteries in an embodiment of the present application; Figure 5 is a structural block diagram of the hot switching control circuit in this application; Figure 6 is a circuit diagram of a hot switching control circuit in this application; Figure 7This is a flow chart of a control method for hot switching of a battery according to an embodiment of the present application. DETAILED DESCRIPTION

[0018] The present application is further described below in conjunction with the accompanying drawings and embodiments.

[0019] In the following introduction, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The following introduction provides multiple embodiments of the present invention, and different embodiments can be replaced or combined, so this application can also be considered to include all possible combinations of the same and / or different embodiments recorded. Therefore, if one embodiment includes features A, B, and C, and another embodiment includes features B and D, then this application should also be considered to include embodiments containing one or more of all other possible combinations of features A, B, C, and D, even though the embodiment may not be clearly recorded in the following text.

[0020] like Figure 1-3 As shown, the V-mouth hanging plate for hot switching of batteries in the present application includes: a battery socket 30, a hot switching control circuit 10 and a plurality of power supply interfaces 20, and the hot switching control circuit 10 is respectively connected to the battery socket 30 and the power supply interface 20; the hot switching control circuit 10 is used for: when a first battery is inserted into the battery socket 30, the first battery is output as the main power source, and it is detected whether a second battery is inserted into the battery socket 30, and when it is detected that a second battery is inserted into the battery socket 30, it is determined whether the first battery or the second battery is used as the main power source output according to the voltage.

[0021] like Figure 1-3 As shown, the power supply interface of the V-mount hanging plate with hot-switch batteries in the present application includes, for example: (1) Dual Type-C standard power supply ports, with rich PD and QC fast charging protocols, which can charge and discharge V-mount batteries at the same time, and the maximum charging and discharging power of a single Type-C is 65W. (2) 8VDC output port, which can support a maximum power output of 8V / 3A and can power SLR / micro-single-lens cameras. (3) 12VDC output port, which can support a maximum power output of 12V / 3A and can power monitors. (4) Dual D-Tap interface, dedicated camera power supply interface. The battery socket is, for example, a double-seat BP interface, which can be used with two V-mount batteries at the same time with the buckle.

[0022] like Figure 1-5As shown, the hot switching control circuit 10 includes a first control circuit and a second control circuit; the hot switching control circuit 10 is used for: when a first battery is inserted into the battery socket, the first battery is output as the main power supply through the first control circuit, and whether a second battery is inserted into the battery socket is detected through the second control circuit. When the second battery is inserted, if the voltage of the second battery is higher than the voltage of the first battery, the first battery is cut off from power supply through the first control circuit, and the second battery is used as the power supply through the second control circuit.

[0023] Regarding the power access control of the dual-seat BP interface in this application, the V-mount battery that is inserted first will first connect to the internal circuit of the hanging board through the BP interface, and the power will directly supply power to the entire hanging board through the switch MOS and the core hot-swap detection circuit to make the entire hanging board work. At this time, if the voltage of the V-mount battery connected again is higher than that of the first V-mount battery, then the IC (Integrated Circuit) of the hot-swap detection circuit will work, and the battery that is connected first and has a lower voltage will be cut off, and the second battery will be used as the power supply to power the entire system. At this time, as long as there is a voltage difference between the battery that is switched again and the power supply that is currently being supplied, the hardware circuit will achieve zero-interruption switching, automatically select the battery with a higher voltage as the system power supply, and realize the function of hot-swappable hanging board. In subsequent use, the system master control also chooses to shut down the power connection of any battery in the dual-seat hanging board through the front-end MOS transistor, regardless of the voltage.

[0024] If the dual-battery mode is used without prior intervention, the voltage of the main battery will drop to a level close to that of the backup battery as it is used normally. At this time, the hot-swap detection circuit will also open the power supply path of the backup battery, and the dual batteries will power the system at the same time, so that the overall power supply capacity will be enhanced. Especially in the case of low power, it helps to maintain the operation of the power system. At this time, replacing the battery will return to the previous loop logic. In other words, the hot-swap control circuit 10 is also used for: when two batteries are inserted into the battery socket 30, if the voltage difference between the battery in use and the backup battery meets the preset range, the two batteries are used for power supply at the same time, for example, the voltage of the battery in use is equal to the voltage of the backup battery, or the voltage of the battery in use is close to the voltage of the backup battery (the difference meets the preset range, and the preset range can be determined according to the actual application).

[0025] In some embodiments, when two batteries are inserted into the battery socket, if the voltage difference between the battery in use and the backup battery meets the preset range, both batteries are used for power supply; if the voltage difference between the battery in use and the backup battery does not meet the preset range, the difference between the voltage of the battery in use and the 11.6V voltage is detected to see if it meets the preset conditions (for example, close to 11.6V). If so, the backup battery is used as the main power output; if not, the battery in use is still used as the main power output.

[0026] like Figure 6 As shown, the hot switching control circuit 10 of the present application includes: a transistor Q1, the drain of the transistor Q1 is respectively connected to the port VBAT1 and one end of the resistor R1, the gate of the transistor Q1 is connected to the other end of the resistor R1 and one end of the resistor R2, the drain of the transistor Q2 is connected to the other end of the resistor R2, the source of the transistor Q2 is grounded, the gate of the transistor Q2 is connected to one end of the resistor R3 and one end of the resistor R4, the other end of the resistor R4 is used to receive an enable signal, and the other end of the resistor R3 is grounded; the source of the transistor Q1 is connected to the source of the transistor Q3, the source of the transistor Q3 is also connected to the IN pin of the ideal diode controller U1, the gate of the transistor Q3 is connected to the GATE pin of the ideal diode controller U1, the drain of the transistor Q3 is respectively connected to one end of the resistor R6 and the OUT pin of the ideal diode controller U1, the other end of the resistor R6 is connected to the VS pin of the ideal diode controller U1, and the drain of the transistor Q3 is also connected to the input The output port VOUT is connected; the drain of transistor Q4 is respectively connected to port VBAT2 and one end of resistor R7, the gate of transistor Q4 is connected to the other end of resistor R7 and one end of resistor R8, the drain of transistor Q6 is connected to the other end of resistor R8, the source of transistor Q6 is grounded, the gate of transistor Q6 is connected to one end of resistor R10 and one end of resistor R9, the other end of resistor R10 is used to receive an enable signal, and the other end of resistor R9 is grounded; the source of transistor Q4 is connected to the source of transistor Q5, the source of transistor Q5 is also connected to the IN pin of ideal diode controller U2, the gate of transistor Q5 is connected to the GATE pin of ideal diode controller U2, the drain of transistor Q5 is respectively connected to one end of resistor R12 and the OUT pin of ideal diode controller U2, the other end of resistor R12 is connected to the VS pin of ideal diode controller U2, and the drain of transistor Q5 is also connected to the output port VOUT. The output port of the hot switching control circuit includes a filter capacitor and a TVS diode.

[0027] When the first battery is connected through port VBAT1, the voltage passes through the gate and drain of transistor Q1 (NMOSFET, N-channel metal oxide semiconductor field effect transistor), and is turned on to transistor Q3 (NMOS) by default, and then flows to the OUT and VS pins of chip U1 (MX5050T) through the body diode of transistor Q3. The VS pin has a charge pump inside. When the input voltage and other conditions (such as enable, etc.) are met, chip U1 will charge its GATE pin (i.e., the gate of external transistor Q3) through the internal charge pump. This charging will increase the voltage difference between the IN pin and the GATE pin of chip U1, that is, the voltage difference between the gate and the source of transistor Q3. When it increases to a certain extent, transistor Q3 will be turned on, and the power will flow to the load through the Rds of transistor Q3 (the on-resistance between the drain and the source in the on state), instead of the body diode of transistor Q3. Therefore, the voltage of the first battery passes through transistor Q3 to power the external system. Similarly, when the second battery is connected through port VBAT2, the voltage of the second battery is output to the external system through transistor Q5. If the voltage output by transistor Q5 is greater than that of transistor Q3, the output voltage of the hot-swap control circuit is equal to the voltage of the second battery. At this time, if any battery is unplugged, the system will not be powered off. Similarly, when a fully charged power supply is replaced again, chips U1 and U2 will switch the system voltage through internal detection to ensure that the two batteries are independent and not affected, and also to ensure that the entire system will not be powered off due to hot-swap behaviors such as battery replacement.

[0028] This application uses the new ideal diode controller MX5050T to control the two battery power supply paths on the hanging board. The gate of the MOS (metal oxide semiconductor field effect transistor) is controlled to control whether the MOS tube is turned on or not. When the current flows in the forward direction, the NMOS (N-channel metal oxide semiconductor field effect transistor) can be controlled to be turned on. Because the internal resistance of the MOS is smaller than that of the diode, the product heat generation is reduced and the current backflow is prevented. The V-mount hanging board will be equipped with a control circuit for each battery separately. During the battery switching process, the output voltage of the low-voltage V-mount battery will be higher than the input voltage. At this time, the IC (integrated circuit) will turn off the MOS tube, and there will be no current output. When the input voltage of the high-voltage V-mount battery is higher than the output voltage, the IC measures the forward voltage drop and turns on the MOS tube as the main power supply to output current. In addition, in conjunction with the battery switch MOS at the back end, when two batteries are mounted, you can selectively turn off which battery according to the received instructions, or you can rely on the characteristics of the MX5050T alone. When the two batteries reach voltage balance, they will output current together to power the device at the same time.

[0029] The V-shaped hanging plate for hot switching of batteries in this application solves the following problems: (1) The traditional single-seat mode hanging board can only hang a single V-mount battery, resulting in insufficient battery expansion capacity and inability to power photographic equipment for a long time. (2) The traditional dual-seat mode hanging board has a power-off process during the switching of the main battery, resulting in interruption of equipment use, and cannot achieve hot-swap and uninterrupted long-term power supply requirements. (3) Existing hanging board equipment has disadvantages such as high cost and low reliability.

[0030] The V-shaped hanging plate for hot switching of batteries in this application has the following effects: (1) Two large-capacity V-mount batteries can be mounted at the same time, which has a longer battery life. (2) When powering the device, two batteries can be used to power the device at the same time, providing a stronger power output capacity. The device can also be dynamically allocated according to the battery power, with instantaneous seamless connection and battery switching in seconds, so as not to cause power outages during the use of the power-consuming device. (3) The combination of hardware as the main and software as the auxiliary can achieve low-cost and high-reliability operation.

[0031] The application scenarios of this application include but are not limited to: (1) During video shooting, it provides long-lasting and uninterrupted power guarantee for SLR, camera, monitor, lighting and other equipment, realizes synchronous power supply of multiple devices, and improves shooting efficiency. (2) In mobile office scenarios, the double-seat V-mount hanging board is equipped with two large-capacity batteries. Through the Type-C interface, it supports high-power charging and high-speed data transmission, making it an ideal outdoor power supply method for laptops, tablets and other devices.

[0032] like Figure 7 As shown, the present application also provides a battery hot switching control method, which is applied to any of the above-mentioned V-mount hanging plates, including: S101, when a first battery is inserted into the battery socket, the hot switching control circuit uses the first battery as the main power output, S103, when it is detected that a second battery is inserted into the battery socket, the hot switching control circuit determines whether to use the first battery or the second battery as the main power output according to the voltage.

[0033] In the present application, the control method embodiment of battery hot switching is basically similar to the V-mouth hanging plate embodiment of battery hot switching. For relevant details, please refer to the introduction of the V-mouth hanging plate embodiment of battery hot switching.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A V-shaped hanging plate for hot switching of batteries, characterized in that: include: A battery socket, a hot switching control circuit and a plurality of power supply interfaces, wherein the hot switching control circuit is respectively connected to the battery socket and the power supply interface; the hot switching control circuit is used to: when a first battery is inserted into the battery socket, use the first battery as the main power output, and when a second battery is detected to be inserted into the battery socket, determine whether to use the first battery or the second battery as the main power output according to the voltage.

2. The V-shaped hanging plate for hot switching of batteries according to claim 1, characterized in that: The hot switching control circuit is used to: when two batteries are inserted into the battery socket, if the voltage difference between the battery in use and the backup battery meets a preset range, use the two batteries to supply power at the same time.

3. The V-shaped hanging plate for hot switching of batteries according to claim 1 or 2, characterized in that: The hot switching control circuit includes a first control circuit and a second control circuit; the hot switching control circuit is used to: when a first battery is inserted into the battery socket, the first control circuit outputs the first battery as the main power supply, and the second control circuit detects whether a second battery is inserted into the battery socket; when the second battery is inserted, if the voltage of the second battery is higher than the voltage of the first battery, the first control circuit cuts off the power supply of the first battery, and the second control circuit uses the second battery as the power supply.

4. The V-shaped hanging plate for hot switching of batteries according to claim 1 or 2, characterized in that: The hot switching control circuit includes: a transistor Q1, the drain of the transistor Q1 is respectively connected to the port VBAT1 and one end of the resistor R1, the gate of the transistor Q1 is connected to the other end of the resistor R1 and one end of the resistor R2, the drain of the transistor Q2 is connected to the other end of the resistor R2, the source of the transistor Q2 is grounded, the gate of the transistor Q2 is connected to one end of the resistor R3 and one end of the resistor R4, the other end of the resistor R4 is used to receive an enable signal, and the other end of the resistor R3 is grounded; the source of the transistor Q1 is connected to the source of the transistor Q3, the source of the transistor Q3 is also connected to the IN pin of the ideal diode controller U1, the gate of the transistor Q3 is connected to the GATE pin of the ideal diode controller U1, the drain of the transistor Q3 is respectively connected to one end of the resistor R6 and the OUT pin of the ideal diode controller U1, the other end of the resistor R6 is connected to the VS pin of the ideal diode controller U1, and the drain of the transistor Q3 is also connected to the output port VOUT is connected; the drain of transistor Q4 is respectively connected to port VBAT2 and one end of resistor R7, the gate of transistor Q4 is connected to the other end of resistor R7 and one end of resistor R8, the drain of transistor Q6 is connected to the other end of resistor R8, the source of transistor Q6 is grounded, the gate of transistor Q6 is connected to one end of resistor R10 and one end of resistor R9, the other end of resistor R10 is used to receive an enable signal, and the other end of resistor R9 is grounded; the source of transistor Q4 is connected to the source of transistor Q5, the source of transistor Q5 is also connected to the IN pin of ideal diode controller U2, the gate of transistor Q5 is connected to the GATE pin of ideal diode controller U2, the drain of transistor Q5 is respectively connected to one end of resistor R12 and OUT pin of ideal diode controller U2, the other end of resistor R12 is connected to the VS pin of ideal diode controller U2, and the drain of transistor Q5 is also connected to output port VOUT.

5. The V-shaped hanging plate for hot switching of batteries according to claim 1 or 2, characterized in that: The hot switch control circuit is used to: according to the received instruction, shut down the power connection of the battery selected in the battery socket.

6. The V-shaped hanging plate for hot switching of batteries according to claim 1 or 2, characterized in that: The power supply interface includes: dual Type-C standard power supply ports, 8VDC output port, 12VDC output port and dual D-Tap interfaces.

7. The V-shaped hanging plate for hot switching of batteries according to claim 1 or 2, characterized in that: The battery socket is a double-seat battery socket of the BP interface.

8. The V-shaped hanging plate for hot switching of batteries according to claim 1 or 2, characterized in that: The hot switching control circuit is used for: when two batteries are inserted into the battery socket, if the voltage difference between the battery in use and the backup battery meets the preset range, the two batteries are used for power supply at the same time; if the voltage difference between the battery in use and the backup battery does not meet the preset range, detect whether the difference between the voltage of the battery in use and the 11.6V voltage meets the preset conditions, if so, use the backup battery as the main power output, if not, still use the battery in use as the main power output.

9. The V-shaped hanging plate for hot switching of batteries according to claim 1 or 2, characterized in that: The output port of the hot switching control circuit includes a filter capacitor and a TVS diode.

10. A method for controlling battery hot switching, characterized in that: include: When a first battery is inserted into the battery socket, the hot switching control circuit uses the first battery as the main power output and detects whether a second battery is inserted into the battery socket. When a second battery is inserted, the hot switching control circuit determines whether to use the first battery or the second battery as the main power output based on the voltage.

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