Charger, battery assembly and unmanned aerial vehicle

Abstract

The utility model relates to a charger, a battery assembly and an unmanned aerial vehicle. The charger comprises a power supply processing module used for responding to the input of an input power supply and outputting a stabilized power supply and an isolation power supply, a charging controller used for responding to the work of the stabilized power supply, and a communication isolation chip used for responding to the input work of the stabilized power supply and the isolation power supply. The communication isolation chip comprises a communication isolation port used for transmitting a first type of communication signals, and an enabling port of the signal isolation module transmits a second type of communication signals transmitted by the battery pack to the signal isolation module, so that the signal isolation module electrically isolates the second type of communication signals and then transmits the signals to a target IO port of the charging controller. According to the charger, the first type of communication signals are transmitted through the communication isolation chip, and the second type of communication signals sent by the battery pack are electrically isolated and then received through the signal isolation module, so that the problem that the battery pack or the charger is damaged by instantaneous high voltage is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery charging technical field especially relates to a charger, battery assembly and unmanned plane. BACKGROUND

[0002] The related art provides an unmanned plane including a battery pack and a charger, and the charger can provide power supply for the battery pack. When the user performs hot plug on the battery pack or the charger, the instantaneous high voltage generated by the hot plug is easy to flow back to the battery pack, thereby damaging the battery pack or the charger. SUMMARY

[0003] The charger, the battery assembly and the unmanned plane provided by the embodiments of the present application are used to solve the defects that the existing instantaneous high voltage damages the battery pack or the charger.

[0004] In a first aspect, the embodiments of the present application provide a charger for providing power supply for a battery pack. The method comprises: a power supply processing module for outputting a regulated power supply and an isolated power supply respectively in response to the input of an input power supply; a charging controller electrically connected with the power supply processing module for working in response to the regulated power supply, the charging controller comprising a target IO port; a communication isolation chip electrically connected with the power supply processing module and the charging controller for working in response to the input of the regulated power supply and the isolated power supply, the communication isolation chip comprising a communication isolation port for communication connection with the battery pack, the communication isolation port being used for transmitting a first type of communication signal; and a signal isolation module electrically connected on the target IO port of the charging controller, the signal isolation module comprising an enable port for communication connection with the battery pack, the enable port transmitting a second type of communication signal transmitted by the battery pack to the signal isolation module, so that the signal isolation module electrically isolates the second type of communication signal and then transmits the signal to the target IO port.

[0005] Optionally, the signal isolation module comprises: a switch unit configured with the enable port for entering a target switch state in response to the second type of communication signal transmitted by the enable port; and an isolation unit electrically connected between the switch unit and the target IO port for electrically isolating the signal from the side of the battery pack and adjusting the voltage of the target IO port in response to the target switch state of the switch unit.

[0006] Optionally, the isolation unit comprises: a voltage dividing unit, a first end of the voltage dividing unit being applied with the input power supply; an optocoupler, the optocoupler comprising a light emitting diode and a photosensitive element; a positive electrode of the light emitting diode being connected with a second end of the voltage dividing unit, a negative electrode of the light emitting diode being connected with the switch unit; a first end of the photosensitive element being electrically connected with the target IO port and being applied with the regulated power supply, a second end of the photosensitive element being connected to the ground.

[0007] Optionally, the voltage dividing unit comprises a first resistor, a first end of the first resistor being applied with the input power supply, a second end of the first resistor being connected with the positive electrode of the light emitting diode.

[0008] Optionally, the switch unit comprises a first MOS transistor, a drain of the first MOS transistor being connected with the negative electrode of the light emitting diode, a gate of the first MOS transistor being connected with the enable port, a source of the first MOS transistor being connected to the ground.

[0009] Optionally, the switch unit further comprises a second resistor and a third resistor; a first end of the second resistor and the enable port being connected, a second end of the second resistor being connected with the gate of the first MOS transistor and a first end of the third resistor respectively, a second end of the third resistor being connected to the ground.

[0010] Optionally, the power supply processing module comprises: a regulated power supply chip, the regulated power supply chip being electrically connected with the charge controller and the communication isolation chip respectively, the regulated power supply chip being configured to output the regulated power supply in response to the input of the input power supply; an isolation power supply chip, the isolation power supply chip being electrically connected with the communication isolation chip, the isolation power supply chip being configured to output the isolation power supply in response to the input of the input power supply.

[0011] In a second aspect, an embodiment of the present application provides a battery assembly. The battery assembly comprises: the charger and the battery pack as described above.

[0012] Optionally, the battery pack comprises: a cell assembly, the cell assembly being configured to be charged under the application of the input power supply and to supply power to an external device; a battery management chip, the battery management chip being electrically connected with the cell assembly; a battery controller, the battery controller being electrically connected with the battery management chip, the battery controller comprising a battery communication port and a battery enable port, the battery communication port being electrically connected with the communication isolation port of the charger, the battery communication port being configured to transmit a first type of communication signal, the battery enable port being electrically connected with the enable port of the charger, the battery enable port being configured to transmit a second type of communication signal; a charge and discharge switch, the charge and discharge switch being electrically connected with the cell assembly and the battery management chip respectively, the charge and discharge switch being configured to control the charge and discharge of the cell assembly.

[0013] In a third aspect, the embodiments of the present application provide a UAV. The UAV comprises the battery assembly as described above.

[0014] At least one advantageous aspect of the charger provided by the embodiments of the present application is that the power processing module is configured to output a regulated power supply and an isolated power supply in response to an input of an input power supply; the charging controller is electrically connected to the power processing module and is configured to work in response to the regulated power supply, the charging controller comprises a target IO port; the communication isolation chip is electrically connected to the power processing module and the charging controller and is configured to work in response to the input of the regulated power supply and the isolated power supply, the communication isolation chip comprises a communication isolation port for communication connection with the battery pack, and the communication isolation port is configured to transmit a first type of communication signal; and the signal isolation module is electrically connected to the target IO port of the charging controller, and the signal isolation module comprises an enable port for communication connection with the battery pack, the enable port is configured to transmit a second type of communication signal transmitted by the battery pack to the signal isolation module, so that the signal isolation module electrically isolates the second type of communication signal before transmitting the signal to the target IO port. The charger provides the regulated power supply and the isolated power supply through the power processing module, transmits the first type of communication signal between the charging controller and the battery pack through the communication isolation chip, and receives the second type of communication signal transmitted by the battery pack after electrically isolating the second type of communication signal through the signal isolation module, thereby realizing the isolated transmission of the two types of communication signals, avoiding the problem of damage to the battery pack or the charger caused by the instantaneous high voltage, and avoiding the problem of damage to the charging controller caused by the voltage signal provided by the battery controller to the charging controller, thereby realizing the electrical isolation of the second type of communication signal transmitted by the battery pack and the instantaneous high voltage without affecting the communication between the charger and the battery pack. BRIEF DESCRIPTION OF DRAWINGS

[0015] One or more embodiments are illustrated by way of example in the figures that form a part of this patent document, these example are not intended to limit the embodiments, elements having the same reference numbers in the figures indicate like elements unless otherwise expressly stated, the figures in the drawings do not constitute a proportional limitation.

[0016] Figure 1 A schematic diagram of a UAV provided by the embodiments of the present application;

[0017] Figure 2 A functional block diagram of a charger provided by the embodiments of the present application;

[0018] Figure 3 A functional block diagram of a charger provided by another embodiment of the present application;

[0019] Figure 4 A functional block diagram of a signal isolation module provided by the embodiments of the present application;

[0020] Figure 5A circuit schematic diagram of the charger provided for the embodiment of the present application is shown in FIG. 1;

[0021] Figure 6 A functional block diagram of the battery pack provided for the embodiment of the present application is shown in FIG. 2;

[0022] Figure 7 A circuit schematic diagram of the battery pack provided for the embodiment of the present application is shown in FIG. 3. DETAILED DESCRIPTION

[0023] In order to facilitate the understanding of the present application, the present application will be described in more detail below in combination with the drawings and specific embodiments. It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element or one or more intervening elements can be present therebetween. When an element is described as being "connected to" another element, it can be directly connected to the other element or one or more intervening elements can be present therebetween. The terms "upper", "lower", "inner", "outer", "bottom", and the like used in the present specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third", and the like are only for the purpose of description and cannot be understood as indicating or implying relative importance.

[0024] Unless otherwise defined, all technical and scientific terms used in the present specification have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the present specification are only for the purpose of describing specific embodiments of the present application and are not intended to limit the present application. The term "and / or" used in the present specification includes any and all combinations of one or more related listed items.

[0025] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0026] The related art provides a drone including a battery pack and a charger, and the charger can provide power for the battery pack. When a user performs hot plugging on the battery pack or the charger, the instantaneous high voltage generated by the hot plugging flows back to the battery pack through the communication port between the charger and the battery pack, thereby damaging the battery controller of the battery pack or the charging controller of the charger. Therefore, the related art uses the port of an isolation communication chip as the communication port between the charger and the battery pack, and the isolation communication chip can isolate the high voltage from flowing back to the battery controller and the charging controller.

[0027] However, the isolation communication chip provided by the related technology can only transmit a specified type of communication signal, and the signal transmission requirements of the battery pack and the charger are relatively numerous, and not all signals transmitted from the battery pack to the charger need to pass through the isolation communication chip. Therefore, the related technology electrically connects the IO port of the battery controller of the battery pack and the IO port of the charging controller of the charger to transmit a non-specified type of communication signal.

[0028] However, the instantaneous high voltage can still flow back to the battery controller or the charging controller through the IO ports of both, thereby damaging the battery controller or the charging controller.

[0029] Therefore, an embodiment of the present application provides a charger for providing power supply for a battery pack. The charger provides a stabilized power supply and an isolated power supply through a power supply processing module, transmits a first type of communication signal between the charging controller and the battery pack through a communication isolation chip, and receives a second type of communication signal sent by the battery pack after electrical isolation by a signal isolation module. The isolation transmission of the two types of communication signals is realized, the problem of damage of the battery pack or the charger caused by the instantaneous high voltage is avoided, and the problem of damage of the charging controller caused by the voltage signal provided by the battery controller is avoided. Thus, the second type of communication signal sent by the battery pack and the instantaneous high voltage are electrically isolated without affecting the communication between the charger and the battery pack.

[0030] Figure 1 A schematic diagram of a UAV provided by an embodiment of the present application is shown in FIG. 1. Figure 1 The UAV 10 includes a charger 11, a battery pack 12, and a fuselage 13.

[0031] By way of example, the UAV 10 includes, but is not limited to, a UAV helicopter, a UAV fixed-wing aircraft, a UAV multicopter, a UAV airship, and a UAV parafoil.

[0032] The fuselage 13 includes a central body and a plurality of arms extending from the central body, and the plurality of arms can be symmetrically arranged. A motor is fixedly installed at an end of each arm away from the central body, and a rotor blade is installed on the motor. The motor is used to drive the rotor blade to rotate, thereby causing the UAV 10 to take off.

[0033] The central body of the fuselage 13 is provided with a flight control module. The flight control module is one of the most important modules of the UAV 10, and it controls the operation and flight of the entire UAV 10. By way of example but not limitation, the flight control module includes a processor, a gyroscope, an accelerometer, a magnetometer, and other sensors. The attitude and speed of the UAV 10 are obtained through these sensors, and the processor is used for calculation and control, thereby realizing stable flight and various flight maneuvers of the UAV 10.

[0034] The central body of the fuselage 13 also has a battery compartment for housing the battery pack 12.

[0035] The battery pack 12 can be connected to or disconnected from the fuselage 13. When the battery pack 12 is connected to the fuselage 13, the battery pack 12 can provide power to external devices such as flight control modules and motors on the fuselage 13, and can also communicate with the flight control module on the fuselage 13.

[0036] In some embodiments, the charger 11 is provided with a charging compartment for temporarily storing the battery pack 12 and providing power to the battery pack 12, thereby enabling the charging of the battery pack 12.

[0037] It should be noted that the embodiments of this application do not limit the specific implementation of the drone.

[0038] It should be noted that the embodiments of this application are provided for simplicity and illustrative purposes, demonstrating the application scenario of a charger in a drone. However, those skilled in the art will understand that, based on similar principles, the charger provided in the embodiments of this application can also be applied to charging scenarios for other rechargeable batteries. The inventive concept disclosed in the embodiments of this application is not limited to... Figure 1 The application shown on drones can also be used in other similar devices that use rechargeable batteries.

[0039] Figure 2 A functional block diagram of the charger provided in the embodiments of this application is shown below. Figure 2 As shown, the charger 11 is used to provide power to the battery pack 12. The charger 11 includes: a power processing module 111, a charging controller 112, a communication isolation chip 113, and a signal isolation module 114.

[0040] The charger 11 also includes a positive power output terminal 115 and a negative power output terminal 116. When the charger 11 charges the battery pack 12, the positive power output terminal 115 is electrically connected to the battery positive output terminal PACK+ of the battery pack 12, and the negative power output terminal 116 is electrically connected to the battery negative output terminal PACK- of the battery pack 12. The positive power output terminal 115 is supplied with input power so that input power is provided to the battery pack 12.

[0041] The power processing module 111 is electrically connected to the positive output terminal 115 of the power supply and the positive terminal POWER+ of the input power supply, respectively. The negative output terminal 116 of the power supply and the negative terminal POWER- of the input power supply are both connected to ground GND.

[0042] The power processing module 111 is used to output a regulated power supply and an isolated power supply respectively in response to the input power supply.

[0043] The charging controller 112 is electrically connected with the power processing module 111, and is configured to work in response to the stabilized power supply. The charging controller 112 includes a target IO port 1121 and a power input end 1122. Specifically, the power input end 1122 is electrically connected with the power processing module 111, so that the power processing module 111 provides the stabilized power supply to the charging controller 112, thereby enabling the charging controller 112 to work in response to the stabilized power supply.

[0044] The communication isolation chip 113 is electrically connected with the power processing module 111 and the charging controller 112, and is configured to work in response to the input of the stabilized power supply and the isolated power supply. The communication isolation chip 113 includes a communication isolation port 1131 configured to be communicatively connected with the battery pack 12. The communication isolation port 1131 is configured to transmit the first type of communication signal. For example, when the battery pack 12 is connected to the charger 11, the charger 11 communicates with the battery pack 12 through the communication isolation port 1131, and reads the battery information (which belongs to the first type of communication signal) of the battery pack 12.

[0045] For example but not limitation, the first type of communication signal can be the power information of the battery pack 12, and can also be the rated capacity information of the battery pack 12.

[0046] The charging controller 112 further includes a charging communication port 1123, and the communication isolation chip 113 further includes a chip communication port 1132. The charging communication port 1123 is electrically connected with the chip communication port 1132, and is configured to transmit the first type of communication signal.

[0047] It should be noted that the number of the communication isolation port 1131 is at least one. The charging communication port 1123 and the chip communication port 1132 between the communication isolation chip 113 and the charging controller 112 are arranged corresponding to the communication isolation port 1131, and the number of the charging communication port 1123 and the chip communication port 1132 is consistent with the number of the communication isolation port 1131.

[0048] The signal isolation module 114 is electrically connected to the target IO port 1121 of the charging controller 112. The signal isolation module 114 includes an enable port 1141 configured to be communicatively connected with the battery pack 12. The enable port 1141 transmits the second type of communication signal transmitted by the battery pack 12 to the signal isolation module 114, so that the signal isolation module 114 electrically isolates the second type of communication signal before transmitting the signal to the target IO port 1121. The signal isolation module 114 is also connected to the ground GND.

[0049] For example but not limitation, the second type of communication signal can be a battery connection signal generated when the battery pack 12 is connected to the charger 11, and can also be a fault signal generated when the battery pack 12 fails.

[0050] In some embodiments, Figure 3A functional block diagram of a charger provided in another embodiment of this application, such as... Figure 3 As shown, the power processing module 111 includes a voltage regulator chip 1111 and an isolation power chip 1112.

[0051] The voltage regulator chip 1111 is electrically connected to the charging controller 112 and the communication isolation chip 113 respectively, and is used to respond to the input of the input power and output a voltage regulator.

[0052] The isolation power supply chip 1112 is electrically connected to the communication isolation chip 113 and is used to output isolated power in response to the input of the input power.

[0053] In some embodiments, Figure 4 This is a functional block diagram of the signal isolation module provided in the embodiments of this application, such as... Figure 4 As shown, the signal isolation module 114 includes a switching unit 1142 and an isolation unit 1143.

[0054] The switching unit 1142 is configured with an enable port 1141, which is used to enter a target switching state in response to a second type of communication signal transmitted through the enable port 1141. The target switching state is used to indicate whether the switching unit 1142 is turned on or off.

[0055] An isolation unit 1143 is electrically connected between a switching unit 1142 and a target I / O port 1121. It provides electrical isolation for signals from the battery pack 12 side and adjusts the voltage of the target I / O port 1121 in response to the target switching state of the switching unit 1142. Specifically, the isolation unit 1143 is also electrically connected to a voltage regulator chip 1111 and is connected to ground (GND). When the signal from the battery pack 12 side is a first voltage signal, the switching unit 1142 is turned on, and the isolation unit 1143 operates in response to the input power supply, thereby generating a second voltage signal at the target I / O port 1121 based on the connection of the isolation unit 1143 to ground (GND). Alternatively, when the signal from the battery pack 12 side is a second voltage signal, the switching unit 1142 is turned off, and the isolation unit 1143 is turned off, thereby generating a first voltage signal at the target I / O port 1121 based on the regulated power supply provided by the voltage regulator chip 1111. For example, the first voltage signal is a high-level signal, and the second voltage signal is a low-level signal.

[0056] In some embodiments, Figure 5 The circuit schematic of the charger provided in the embodiments of this application is as follows: Figure 5 As shown, the isolation unit 1143 includes a voltage divider unit 11431 and an optocoupler device 11432. The optocoupler device 11432 includes a light-emitting diode D1 and a photosensitive element q1.

[0057] The first end of the voltage divider unit 11431 is supplied with an input power supply. For example, the first end of the voltage divider unit 11431 is connected to the positive output terminal 115 of the power supply.

[0058] The positive terminal of LED D1 is connected to the second terminal of voltage divider unit 11431. The positive terminal of LED D1 is supplied with power after voltage division by voltage divider unit 11431. The negative terminal of LED D1 is connected to switch unit 1142.

[0059] The first end of the photosensitive element q1 is electrically connected to the target IO port 1121 and is supplied with a regulated power supply, while the second end of the photosensitive element q1 is connected to ground GND.

[0060] By way of example, and not limitation, the photosensitive element q1 can be a phototransistor or a photodiode. For example, such as... Figure 5 As shown, the photosensitive element q1 is a phototransistor.

[0061] In some embodiments, such as Figure 5 As shown, the isolation unit 1143 also includes a fourth resistor R4. A regulated power supply is applied to the first end of the fourth resistor R4, and the second end of the fourth resistor R4 is electrically connected to the first end of the photosensitive element q1 and the target IO port 1121, respectively.

[0062] In some embodiments, such as Figure 5 As shown, the voltage divider unit 11431 includes a first resistor R1. The first end of the first resistor R1 is supplied with an input power supply, and the second end of the first resistor R1 is connected to the positive terminal of the light-emitting diode D1.

[0063] In some embodiments, such as Figure 5 As shown, the switching unit 1142 includes a first MOSFET Q1. The drain D of the first MOSFET Q1 is connected to the negative terminal of the light-emitting diode D1, the gate G of the first MOSFET Q1 is connected to the enable port 1141, and the source S of the first MOSFET Q1 is connected to ground GND.

[0064] In some embodiments, such as Figure 5 As shown, the switching unit 1142 also includes a second resistor R2 and a third resistor R3. The first end of the second resistor R2 is connected to the enable port 1141, the second end of the second resistor R2 is connected to the gate G of the first MOSFET Q1 and the first end of the third resistor R3, and the second end of the third resistor R3 is connected to ground GND. The second resistor R2 is used to limit the current of the signal from the battery pack 12 side, and the third resistor R3 performs voltage division on the signal from the battery pack 12 side.

[0065] For example, such as Figure 5As shown, when the signal from the battery pack 12 side is the signal of the first voltage, the first MOS tube Q1 is turned on, the light emitting diode D1 is applied with the power supply after the voltage division of the first resistor R1 and emits light, so as to irradiate the photosensitive element q1, so that the photosensitive element q1 is turned on to the ground, and then the second voltage signal is formed at the target IO port 1121; or when the signal from the battery pack 12 side is the signal of the second voltage, the first MOS tube Q1 is turned off, the light emitting diode D1 is turned off and does not emit light, so that the photosensitive element q1 is turned off, and then the first voltage signal is formed at the target IO port 1121 based on the stabilized power supply provided by the stabilized power supply chip 1111.

[0066] In some embodiments, as shown in FIG. 1, the power supply processing module 111 includes a stabilized power supply chip 1111 and an isolated power supply chip 1112. Figure 5 As shown, the power supply processing module 111 includes a stabilized power supply chip 1111 and an isolated power supply chip 1112.

[0067] The stabilized power supply chip 1111 is electrically connected with the charge controller 112 and the communication isolation chip 113 respectively, and is configured to output a stabilized power supply VCC1 in response to an input of an input power supply. The type of the stabilized power supply chip 1111 is not limited in the embodiments of the present application. For example, as shown in FIG. 2, the stabilized power supply chip 1111 includes a first pin for receiving the input power supply, a second pin for grounding, a third pin for receiving an enable signal, and a fourth pin for outputting the stabilized power supply VCC1, wherein the first pin and the third pin of the stabilized power supply chip 1111 are both applied with the input power supply. Figure 5

[0068] The isolated power supply chip 1112 is electrically connected with the communication isolation chip 113, and is configured to output an isolated power supply VDD1 in response to an input of an input power supply. The type of the isolated power supply chip 1112 is not limited in the embodiments of the present application. For example, as shown in FIG. 3, the first pin of the isolated power supply chip 1112 is applied with the input power supply, the second pin is used to output the isolated power supply VDD1, and the third pin and the fourth pin are both connected to the ground GND. Figure 5

[0069] The type of the communication isolation chip 113 is not limited in the embodiments of the present application. For example, as shown in FIG. 4, the communication isolation chip 113 includes a first pin for receiving the input power supply, a second pin for grounding, a third pin for receiving the enable signal, and a fourth pin for outputting the isolated power supply VDD1, wherein the first pin and the third pin of the communication isolation chip 113 are both applied with the input power supply. Figure 6 ​​As shown, the communication isolation chip 113 includes: two communication isolation ports 1131, two chip communication ports 1132, a first power input terminal 1133, a second power input terminal 1134, and two ground terminals 1135. The two communication isolation ports 1131 are electrically connected to the battery pack 12, the two chip communication ports 1132 are electrically connected to the two charging communication ports 1123 in the charging controller 112, the first power input terminal 1133 is electrically connected to the fourth pin of the voltage regulator chip 1111 for outputting the voltage regulator VCC1, the second power input terminal 1134 is electrically connected to the second pin of the isolation power chip 1112 for outputting the isolation power VDD1, and the two ground terminals 1135 are both connected to ground GND.

[0070] This application does not limit the model of the charging controller 112. For example, such as... Figure 6 As shown, the charging controller 112 includes: a target I / O port 1121, a power input terminal 1122, two charging communication ports 1123, a ground terminal 1124, and three idle I / O ports. The target I / O port 1121 is electrically connected to the first end of the photosensitive element q1. The power input terminal 1122 is electrically connected to the fourth pin of the voltage regulator chip 1111, which is used to output the voltage regulator VCC1. The two charging communication ports 1123 are electrically connected to the two chip communication ports 1132 of the communication isolation chip 113, respectively. The ground terminal 1124 is connected to ground GND.

[0071] In some embodiments, this application provides a battery assembly including a charger 11 and a battery pack 12.

[0072] In some embodiments, Figure 6 This is a functional block diagram of the battery pack provided in the embodiments of this application, such as... Figure 7 As shown, the battery pack 12 includes: a cell assembly 121, a battery management chip 122, a battery controller 123, and a charge / discharge switch 124.

[0073] The battery pack 12 also includes a battery positive output terminal PACK+ and a battery negative output terminal PACK-. When the charger 11 charges the battery pack 12, the battery positive output terminal PACK+ is electrically connected to the power positive output terminal 115 of the charger 11, and the battery negative output terminal PACK- is electrically connected to the power negative output terminal 116 of the charger 11. The power positive output terminal 115 is supplied with input power to provide input power to the battery pack 12 so that the battery pack 12 can be charged.

[0074] The battery cell assembly 121 is configured to be charged under the application of an input power source and to supply power to external devices, for example, the battery management chip 122 and the battery controller 123. Specifically, the battery cell assembly 121 is electrically connected to the battery management chip 122, the battery controller 123, and the charge and discharge switch 124, respectively. The charge and discharge switch 124 is electrically connected to the positive electrode output terminal PACK+ of the battery.

[0075] The battery management chip 122 is electrically connected to the battery cell assembly 121 and is configured to perform relevant management on the battery cell assembly 121. The relevant management includes, but is not limited to, battery state monitoring, such as real-time monitoring of key parameters such as voltage, current, and temperature of the battery; and protection functions, such as overcharge protection, overdischarge protection, overcurrent protection, short circuit protection, and overtemperature protection, multiple safety protection measures to prevent damage to the battery cell assembly and potential safety risks.

[0076] The battery controller 123 is electrically connected to the battery management chip 122 and is configured to send data to the battery management chip 122 and receive data sent by the battery management chip 122.

[0077] The battery controller 123 includes a battery communication port 1231 and a battery enable port 1232. The battery communication port 1231 is electrically connected to the communication isolation port 1131 of the charger 11 and is configured to transmit a first type of communication signal. The battery enable port 1232 is electrically connected to the enable port 1141 of the charger 11 and is configured to transmit a second type of communication signal.

[0078] The charge and discharge switch 124 is electrically connected to the battery cell assembly 121 and the battery management chip 122, respectively, and is configured to control the charging and discharging of the battery cell assembly 121.

[0079] The battery cell assembly 121, the battery management chip 122, and the negative electrode output terminal PACK- of the battery are also connected to the ground GND.

[0080] In some embodiments, as shown in FIG. 1B, the battery pack 12 further includes a current sampling unit 125 and a battery voltage stabilizing module 126. Figure 7

[0081] The current sampling unit 125 is connected to the battery management chip 122 and the negative electrode output terminal PACK-, respectively, and is configured to sample the current flowing through the current sampling unit 125, so that the current sampling unit 125 obtains a corresponding current sampling signal.

[0082] The battery voltage stabilizing module 126 is electrically connected to the battery cell assembly 121 and the battery controller 123, respectively, and is configured to isolate the power output by the battery cell assembly 121 and provide the power to the battery controller 123.

[0083] In some embodiments, as shown in FIG. 1B, the battery pack 12 further includes a current sampling unit 125 and a battery voltage stabilizing module 126. Figure 7 ​A circuit schematic of the battery pack provided by the embodiments of the present application is shown in Figure 7 The cell assembly 121 includes a plurality of series-connected cells 1211, a cell positive electrode BAT+ and a cell negative electrode BAT-, and the cell positive electrode BAT+ is configured to output a power supply of the cell assembly 121.

[0084] In some embodiments, the battery voltage stabilization module 126 includes a battery voltage stabilization chip 1261, and the embodiments of the present application do not limit the model of the battery voltage stabilization chip 1261. For example, as shown in Figure 7 The battery voltage stabilization chip 1261 includes a first pin configured to receive the power supply output by the cell assembly 121, a second pin configured to be grounded, a third pin configured to receive an enable signal, and a fourth pin configured to output a battery voltage stabilization power supply VCC2, wherein the first pin and the third pin of the battery voltage stabilization chip 1261 are both applied with the power supply output by the cell assembly 121.

[0085] The embodiments of the present application do not limit the model of the battery controller 123. For example, as shown in Figure 7 The battery controller 123 includes a first pin VCC configured to input a power supply, two battery communication ports 1231 (such as a second pin and a third pin as shown in Figure 7 The battery controller 123 includes a fourth pin as a battery enable port 1232 as shown in Figure 7 The fifth pin of the battery controller 123 is configured to transmit data between the battery controller 123 and the battery management chip 122, the sixth pin VSS is configured to be grounded, and the seventh pin and the eighth pin are idle, wherein the two battery communication ports 1231 are respectively electrically connected with two communication isolation ports 1131 of the charger 11, the battery enable port 1232 is electrically connected with the enable port 1141 of the charger 11, and the fifth pin of the battery controller 123 is configured to transmit data between the battery controller 123 and the battery management chip 122.

[0086] The embodiments of the present application do not limit the model of the battery management chip 122. For example, as shown in Figure 7 The battery management chip 122 includes a plurality of cell voltage detection pins (such as a first pin and a second pin as shown in Figure 7The battery controller 123 is shown with CELL0, CELL1, and CELLX, power supply pin VDD, ground pin GND, data pin data, control pins CHG and DSG, and current detection pins ISM and ISP. The cell voltage detection pin is used to detect the voltage of each cell 1211. The power supply pin VDD is electrically connected to the positive terminal BAT+ of the cell assembly 121. The ground pin GND is connected to ground GND. The control pins CHG and DSG are electrically connected to the charge / discharge switch 124 to control the charge / discharge switch 124 to be in a closed or open state. The current detection pins ISM and ISP are electrically connected to the current sampling unit 125 to detect the current flowing through the current sampling unit 125. The data pin data is connected to the fifth pin of the battery controller 123.

[0087] In some embodiments, such as ​ As shown, the charge / discharge switch 124 includes a second MOSFET Q2 and a third MOSFET Q3.

[0088] Specifically, the source S of the second MOSFET Q2 is electrically connected to the positive terminal BAT+ of the battery cell assembly 121, the gate G of the second MOSFET Q2 is electrically connected to the control pin CHG of the battery management chip 122, the drain D of the second MOSFET Q2 is electrically connected to the drain D of the third MOSFET Q3, the gate G of the third MOSFET Q3 is electrically connected to the control pin DSG of the battery management chip 122, and the source S of the third MOSFET Q3 is electrically connected to the positive output terminal PACK+ of the battery.

[0089] In some embodiments, such as ​ As shown, the current sampling unit 125 includes a fifth resistor R5. The first end of the fifth resistor R5 is electrically connected to the current detection pin ISM of the battery management chip 122, and the first end of the fifth resistor R5 is connected to ground GND. The second end of the fifth resistor R5 is electrically connected to the current detection pin ISP of the battery management chip 122 and the negative output terminal PACK- of the battery, respectively.

[0090] It should be noted that the communication method between the battery controller 123 and the battery management chip 122 is not limited. The control method of the battery management chip 122 controlling the charge / discharge switch 124 is not limited, and the charge / discharge switch 124 can be set at the negative terminal output PACK- of the battery. The method of sampling the current flowing through the current sampling unit 125 is not limited.

[0091] It should be noted that the above embodiments can realize the identification of the battery pack accessing the charger, and can also realize the alarm in the charging process. For example, the second type of communication signal can be a battery access signal generated when the battery pack 12 accesses the charger 11, or a fault signal generated when the battery pack fails. Without being limited to the above examples, other scenarios requiring the transmission of the second type of communication signal can also be implemented by the charger 11.

[0092] It should be noted that the charging controller 112 and the battery controller 123 can be any general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA), a single-chip microcomputer, an ARM (Acorn RISC Machine), or other programmable logic devices, discrete gates or transistor logic, discrete hardware components, or any combination of these components. It can also be any conventional processor, controller, microcontroller, or state machine. It can also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in combination with a DSP, and / or any other such configuration.

[0093] In summary, the charger provided by the embodiments of the present application has at least one advantageous aspect: a power processing module for respectively outputting a regulated power supply and an isolated power supply in response to the input of an input power supply; a charging controller electrically connected to the power processing module, for working in response to the regulated power supply, the charging controller including a target IO port; a communication isolation chip electrically connected to the power processing module and the charging controller, for working in response to the input of the regulated power supply and the isolated power supply, the communication isolation chip including a communication isolation port for communication connection with a battery pack, the communication isolation port being used to transmit a first type of communication signal; and a signal isolation module electrically connected to the target IO port of the charging controller, the signal isolation module including an enable port for communication connection with the battery pack, the enable port being used to transmit a second type of communication signal transmitted by the battery pack to the signal isolation module, so that the signal isolation module electrically isolates the second type of communication signal before transmitting the signal to the target IO port. The charger provides the regulated power supply and the isolated power supply through the power processing module, isolates and transmits the first type of communication signal between the charging controller and the battery pack through the communication isolation chip, and electrically isolates the second type of communication signal transmitted by the battery pack before receiving it through the signal isolation module, thereby realizing the isolated transmission of the two types of communication signals, avoiding the problem of damage to the battery pack or the charger caused by instantaneous high voltage, and avoiding the problem of damage to the charging controller caused by the voltage signal provided by the battery controller to the charging controller, thereby realizing the electrical isolation of the second type of communication signal transmitted by the battery pack and the instantaneous high voltage without affecting the communication between the charger and the battery pack.

[0094] Finally, it should be noted that: the above examples are used to illustrate the technical solutions of the present application, rather than limiting them; under the idea of the present application, the technical features in the above examples or different examples can also be combined, the steps can be implemented in any order, and there are many other changes of different aspects of the present application as described above, which are not provided in detail for simplicity; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A charger for providing power to a battery pack, characterized by, The charger and the battery pack are characterized in that: a power processing module is configured to output a regulated power and an isolated power in response to an input of an input power; a charging controller is electrically connected to the power processing module and configured to work in response to the regulated power, the charging controller comprising a target IO port; a communication isolation chip is electrically connected to the power processing module and the charging controller and configured to work in response to the input of the input power and the isolated power, the communication isolation chip comprising a communication isolation port configured to communicate with the battery pack and transmit a first type of communication signal; a signal isolation module is electrically connected to the target IO port of the charging controller, the signal isolation module comprising an enable port configured to communicate with the battery pack and transmit a second type of communication signal from the battery pack to the signal isolation module, so that the signal isolation module electrically isolates the second type of communication signal and then transmits the signal to the target IO port.

2. The charger of claim 1, wherein The signal isolation module comprises: a switch unit configured to the enable port and configured to enter a target switch state in response to the second type of communication signal transmitted by the enable port; an isolation unit electrically connected between the switch unit and the target IO port and configured to electrically isolate a signal from the battery pack side and adjust a voltage of the target IO port in response to the target switch state of the switch unit.

3. The charger of claim 2, wherein The isolation unit comprises: a voltage dividing unit, a first end of the voltage dividing unit being applied with the input power; an optical coupling device, the optical coupling device comprising a light emitting diode and a photosensitive element; a positive electrode of the light emitting diode being connected to a second end of the voltage dividing unit, and a negative electrode of the light emitting diode being connected to the switch unit; a first end of the photosensitive element being electrically connected to the target IO port and applied with the regulated power, and a second end of the photosensitive element being connected to the ground.

4. The charger of claim 3, wherein The voltage dividing unit comprises a first resistor, a first end of the first resistor being applied with the input power, and a second end of the first resistor being connected to the positive electrode of the light emitting diode.

5. The charger of claim 3, wherein The switch unit comprises a first MOS transistor, a drain of the first MOS transistor being connected to the negative electrode of the light emitting diode, a gate of the first MOS transistor being connected to the enable port, and a source of the first MOS transistor being connected to the ground.

6. The charger of claim 5, wherein, The switch unit further comprises a second resistor and a third resistor; a first end of the second resistor being connected to the enable port, a second end of the second resistor being connected to the gate of the first MOS transistor and a first end of the third resistor, and a second end of the third resistor being connected to the ground.

7. The charger of claim 1, wherein The power processing module comprises: a regulated power chip electrically connected to the charging controller and the communication isolation chip and configured to output the regulated power in response to the input of the input power; an isolated power chip electrically connected to the communication isolation chip and configured to output the isolated power in response to the input of the input power.

8. A battery assembly characterized by, The charger and the battery pack are characterized in that: The battery pack comprises:

9. The battery assembly of claim 8, wherein, ​ An electric cell assembly for charging under the application of an input power supply and powering an external device; A battery management chip electrically connected with the electric cell assembly; A battery controller electrically connected with the battery management chip, the battery controller comprising a battery communication port and a battery enable port, the battery communication port being electrically connected with a communication isolation port of the charger for transmitting a first type of communication signal, the battery enable port being electrically connected with an enable port of the charger for transmitting a second type of communication signal; A charge-discharge switch electrically connected with the electric cell assembly and the battery management chip respectively for controlling the charge-discharge of the electric cell assembly.

10. A drone, characterized in that, The unmanned aerial vehicle comprises the battery assembly according to any one of claims 8 or 9.

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