Charging management system and charging device

Abstract

This application provides a charging management system and a charging device. The charging management system includes a control unit, a programmable power supply, and at least one charging module. The control unit is connected to both the programmable power supply and each of the at least one charging module. The control unit reads the model information of the target battery connected to the target charging module and sends a target charging command to the programmable power supply. The target charging command carries target charging parameters corresponding to the model information. The target charging module can be any one of the at least one charging module. The programmable power supply is connected to each of the at least one charging module and responds to the target charging command by outputting a charging signal corresponding to the target charging parameters to the target battery through the target charging module. This technical solution can charge multiple batteries of different models, improving charging compatibility and convenience.

Description

Technical Field

[0001] This application relates to the field of battery charging, and more particularly to charging management systems and charging equipment. Background Technology

[0002] Limited by the energy density of lithium batteries, the flight time of drone batteries is generally short. To extend flight time, users typically purchase multiple batteries. Different battery models usually come with dedicated chargers. When a user purchases multiple batteries of different models, multiple chargers are needed to charge each battery separately, resulting in a large number of charging devices and a cumbersome charging process. Utility Model Content

[0003] This application provides a charging management system and charging equipment to solve the technical problem of the cumbersome charging process caused by the need to use multiple chargers to charge multiple batteries of different models.

[0004] In a first aspect, a charging management system is provided, comprising a control unit, a programmable power supply, and at least one charging module, wherein:

[0005] The control unit is connected to the programmable power supply and each of the at least one charging module. The control unit is used to read the model information of the target battery connected to the target charging module and send a target charging command to the programmable power supply. The target charging command carries the target charging parameters corresponding to the model information. The target charging module is any one of the at least one charging module.

[0006] The programmable power supply is connected to each of the at least one charging module. The programmable power supply is used to respond to the target charging command and output a charging signal corresponding to the target charging parameters to the target battery through the target charging module.

[0007] In this technical solution, the charging management system includes a control unit, a programmable power supply, and at least one charging module. The control unit is connected to the programmable power supply and each of the at least one charging module. The control unit is used to read the model information of the target battery connected to the target charging module and send a charging command carrying charging parameters corresponding to the model information of the target battery to the programmable power supply. The programmable power supply is connected to each of the at least one charging module and is used to respond to the target charging command sent by the control unit by outputting a charging signal corresponding to the target charging parameters to the target battery through the target charging module. By setting a programmable power supply and a control unit that can read the model information of the battery in the charging management system, the charging management system can control the programmable power supply to output a charging signal matching the model information of the battery connected to the charging management system according to the model information of the battery. This enables charging of batteries of different models. When charging multiple batteries, users do not need to frequently switch chargers, which simplifies the charging process and improves charging compatibility and convenience.

[0008] In conjunction with the first aspect, in one possible design, each charging module has the same structural composition. The target charging module includes a battery presence detection circuit and a charging port, wherein: the battery presence detection circuit is connected between the control unit and the charging port, and the battery presence detection circuit is used to detect whether the battery is connected to the target charging module; the charging port is also connected to the programmable power supply, and the programmable power supply outputs a charging signal through the charging port. By setting a battery presence detection circuit in the charging module, it is possible to detect whether the battery is connected to the charging management system.

[0009] In conjunction with the first aspect, in one possible design, the battery presence detection circuit includes a first resistor and a second resistor, wherein: one end of the first resistor is connected to the charging port, the other end of the first resistor is connected to the control unit and one end of the second resistor, and the other end of the second resistor is grounded. Battery presence detection is achieved by setting two resistors in series for voltage division. This circuit is simple, saves costs, and can simultaneously detect battery voltage, thereby achieving battery power detection.

[0010] In conjunction with the first aspect, in one possible design, the battery presence detection circuit further includes a first capacitor, wherein the first capacitor is connected in parallel with the second resistor. Using the capacitor for filtering helps to accurately detect the battery voltage.

[0011] In conjunction with the first aspect, in one possible design, the battery presence detection circuit includes an optocoupler and a third resistor, wherein: the photodiode of the optocoupler is connected to the charging port, the phototransistor of the optocoupler is connected to one end of the third resistor and the control unit, and the other end of the third resistor is grounded. Using an optocoupler to implement battery presence detection achieves electrical isolation, preventing battery voltage from damaging the detection circuit.

[0012] In conjunction with the first aspect, in one possible design, the target charging module further includes a battery power detection circuit, wherein: the battery power detection circuit is connected between the control unit and the charging port, and the battery power detection circuit is used to detect the power level of the target battery. By incorporating a battery power detection circuit into the charging module, battery power detection can be achieved.

[0013] In conjunction with the first aspect, in one possible design, the target charging module further includes a switching circuit, wherein: the switching circuit is connected between the charging port and the programmable power supply, and is also connected to the control unit; the switching circuit is used to adjust the connection relationship between the programmable power supply and the charging port; the control unit is further used to activate the switching circuit and control the programmable power supply to output a preset charging signal to the target battery when the model information cannot be read, the preset charging signal being used to wake up the target battery. By setting a switching circuit in the charging module, the connection relationship between the programmable power supply and the battery can be adjusted and controlled, thereby performing charging control.

[0014] In conjunction with the first aspect, in one possible design, the switching circuit is a transistor circuit, which includes at least one transistor, wherein: the on / off control terminal of the transistor circuit is connected to the control unit, the input terminal of the transistor circuit is connected to the programmable power supply, and the output terminal of the transistor circuit is connected to the charging port. Using a transistor circuit to achieve switching control is simple and has low circuit cost.

[0015] In conjunction with the first aspect, in one possible design, the charging management system further includes a system power supply, wherein the system power supply is connected to the control unit and is used to supply power to the control unit.

[0016] In a second aspect, a charging device is provided, including the charging management system described in the first aspect.

[0017] This application can achieve the following technical effects: by setting a programmable power supply and a control unit that can read the battery model information in the charging management system, the charging management system can control the programmable power supply to output a charging signal that matches the battery model information to the battery connected to the charging management system according to the battery model information, so as to charge different models of batteries. When charging multiple batteries, users do not need to frequently switch chargers, which can simplify the charging process and improve charging compatibility and convenience. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a charging device provided in an embodiment of this application;

[0019] Figure 2 A structural block diagram of a battery management system provided in an embodiment of this application;

[0020] Figure 3 A schematic diagram of the composition structure of a target charging module provided in an embodiment of this application;

[0021] Figure 4 A schematic diagram of a battery presence detection circuit provided in an embodiment of this application;

[0022] Figure 5 A schematic diagram of another battery presence detection circuit provided in an embodiment of this application;

[0023] Figure 6 This is a schematic diagram of a switching circuit provided in an embodiment of this application. Detailed Implementation

[0024] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0025] The technical solution of this application is applicable to charging equipment, especially to charging equipment that can charge multiple batteries at the same time. Charging equipment includes, but is not limited to, chargers, drones, etc.

[0026] For ease of understanding, the charging device of this application will be introduced first. See [link to relevant documentation]. Figure 1 , Figure 1 This is a schematic diagram of a charging device provided in an embodiment of this application, such as... Figure 1 As shown, the charging device 1 includes a housing 10 and a charging management system 20. The charging management system 20 is disposed inside the housing 10. One or more battery receiving cavities are provided on the housing 10. The battery receiving cavities are used to place batteries. A charging port is provided at the bottom of the battery receiving cavity. When the battery is placed into the battery receiving cavity and connected to the charging port at the bottom of the battery receiving cavity, the battery is connected to the charging management system 20 inside the housing. The battery management system 20 performs charging management for the battery.

[0027] Conventional charging management systems can only manage the charging of batteries of the same model. The charging management system of this application can be used to manage the charging of batteries of different models. The charging management system of this application is described below.

[0028] See Figure 2 , Figure 2 A structural block diagram of a battery management system provided in this application embodiment is shown below. Figure 2 As shown, the charging management system 20 includes a control unit 201, a programmable power supply 202, and at least one charging module 203, wherein:

[0029] The control unit 101 is connected to the programmable power supply 202 and at least one charging module 203 respectively. The control unit 101 is used to read the model information of the target battery connected to the target charging module and send the target charging command to the programmable power supply 202. The target charging command carries the target charging parameters corresponding to the model information. The target charging module is any one of the at least one charging module.

[0030] The programmable power supply 202 is connected to at least one charging module 203. The programmable power supply 202 is used to respond to the target charging command and output the charging signal corresponding to the target charging parameters to the target battery through the target charging module.

[0031] The control unit 201 can be any processing unit capable of communicating with the battery and reading the battery model information through communication with the battery. The control unit 201 can also communicate with the programmable power supply and control the programmable power supply 202 through communication with the programmable power supply. The control unit 201 has a pre-stored correspondence between the battery model information and the battery charging parameters. The charging parameters refer to the parameters required for battery charging, such as charging voltage, charging current and / or charging power.

[0032] The control unit 201 includes, but is not limited to, a central processing unit (CPU), a microcontroller unit (MCU), a programmable logic controller (PLC), or a system-on-chip (SoC). In a specific example, the control unit 101 may be a CB5121.

[0033] Among them, the programmable power supply 202 is a power supply whose charging parameters such as output voltage, output current and / or output power can be controlled by programming. The programmable power supply 202 can adjust the charging parameters of the charging signal output by the programmable power supply 202 according to the charging command sent by the control unit 201.

[0034] The charging module 203 is used to connect to the battery and output a charging signal to the battery. The specific implementation of the charging module 203 can take many forms; its specific structure will be described later.

[0035] Optionally, such as Figure 2 As shown, the charging management system 20 may also include a system power supply 204, which is connected to the control unit 201 and is used to supply power to the control unit 201.

[0036] In the above Figure 2 In the corresponding technical solution, the charging management system includes a control unit, a programmable power supply, and at least one charging module. The control unit is connected to the programmable power supply and each of the at least one charging module. The control unit is used to read the model information of the target battery connected to the target charging module and send a charging command carrying charging parameters corresponding to the model information of the target battery to the programmable power supply. The programmable power supply is connected to each of the at least one charging module and is used to respond to the target charging command sent by the control unit and output a charging signal corresponding to the target charging parameters to the target battery through the target charging module. By setting a programmable power supply and a control unit that can read the model information of the battery in the charging management system, the charging management system can control the programmable power supply to output a charging signal matching the model information of the battery connected to the charging management system according to the model information of the battery. This enables charging of batteries of different models. When charging multiple batteries, users do not need to frequently switch chargers, which simplifies the charging process and improves charging compatibility and convenience.

[0037] Each charging module in the charging management system 20 has the same structural composition. The following section describes the charging modules in the charging management system 20. (See also...) Figure 3 , Figure 3 This is a schematic diagram of the composition structure of a target charging module provided in an embodiment of this application. The target charging module is any one of the charging modules in the charging management system 20, such as... Figure 3 As shown, the target charging module 203 includes a battery presence detection circuit 2031 and a charging port 2032, wherein:

[0038] The battery presence detection circuit 2031 is connected between the control unit 201 and the charging port 2032. The battery presence detection circuit 2031 is used to detect whether the battery is connected to the target charging module.

[0039] The charging port 2032 is also connected to the programmable power supply 202, which outputs a charging signal through the charging port 2032.

[0040] By setting a battery presence detection circuit in the charging module, it is possible to detect whether the battery is connected to the charging management system.

[0041] There are multiple ways to implement the battery presence detection circuit 2031.

[0042] In one possible design, the detection of whether the battery is connected to the charging module can be achieved based on a resistor voltage divider. Specifically, such as... Figure 4 As shown, the battery presence detection circuit 2031 includes a first resistor R1 and a second resistor R2, wherein: one end of the first resistor R1 is connected to the charging port 2032, the other end of the first resistor R1 is connected to the control unit 201 and one end of the second resistor R2, and the other end of the second resistor R2 is grounded.

[0043] Figure 4 The detection principle of the battery presence detection circuit 2031 shown is as follows: When the battery is not connected to the charging port 2032, one end of the first resistor R1 is left floating, and the second resistor R2 acts as a pull-down resistor, pulling down the voltage sampling value at the detection point p1 to a preset voltage value. The control unit 201 detects that the voltage sampling value at the detection point p1 is the preset voltage value and determines that the battery is not connected to the charging port 2032, that is, the battery is not connected to the target charging module 203. When the battery is connected to the charging port 2032, the battery has voltage, and the first resistor R1 and the second resistor R2 form a voltage divider circuit. The voltage sampling value at the detection point p1 is greater than the preset voltage value. The control unit 201 detects that the voltage sampling value at the detection point p1 is greater than the preset voltage value and determines that the battery is connected to the charging port 2032, that is, the battery is connected to the target charging module 203.

[0044] After the battery is connected to the target charging module Figure 4 The battery presence detection circuit shown can also be used as a power detection circuit to detect the power level of the target battery connected to the target charging module. Specifically, the control unit 201 can determine the voltage of the target battery based on the voltage sample value at detection point p1, and then determine the battery's power level based on the target battery's voltage.

[0045] Battery presence detection is achieved by setting two resistors in series to divide the voltage. The circuit is simple and cost-effective. In addition, it can also detect the battery voltage at the same time, thereby realizing battery power detection.

[0046] Optionally, such as Figure 4 As shown, the battery presence detection circuit 2031 may further include a first capacitor C1, wherein the first capacitor C1 is connected in parallel with the second resistor R2, and the first capacitor C1 can reduce the ripple voltage at the detection point p1. Filtering by using a capacitor helps to accurately detect the battery voltage.

[0047] In another possible design, the detection of whether the battery is connected to the charging module can also be based on optocouplers. Specifically, such as... Figure 5 As shown, the battery presence detection circuit 2031 includes an optocoupler OC and a third resistor R3, wherein: the photodiode of the optocoupler OC is connected to the charging port 2032, the emitter of the phototransistor of the optocoupler OC is connected to one end of the third resistor R3 and the control unit 201, the other end of the third resistor R3 is grounded, and the collector of the phototransistor of the optocoupler OC is connected to the system power supply 204.

[0048] Figure 5 The detection principle of the battery presence detection circuit 2031 shown is as follows: When the battery is not connected to the charging port 2032, there is no voltage across the charging port 2032, the photodiode of the optocoupler OC does not emit light, the phototransistor of the optocoupler OC is in the off state, and the third resistor R3 acts as a pull-down resistor, pulling the level at the detection point p2 down to a low level. The control unit 201 detects that the level at the detection point p2 is low and determines that the battery is not connected to the charging port 2032, that is, the battery is not connected to the target charging module 203; When the battery is connected to the charging port 2032, there is voltage across the charging port 2032, the photodiode of the optocoupler OC emits light, the phototransistor of the optocoupler OC is in the on state, the level at the detection point p2 is high, the control unit 201 detects that the level at the detection point p2 is high and determines that the battery is connected to the charging port 2032, that is, the battery is connected to the target charging module 203.

[0049] Using optocouplers to detect battery presence can achieve electrical isolation and prevent battery voltage from damaging the detection circuit.

[0050] Optionally, such as Figure 5 As shown, the battery presence detection circuit 2031 may further include a fourth resistor R4, which is connected in series between the positive terminal of the photodiode of the optocoupler OC and one end of the charging port 2032. The fourth resistor R4 acts as a current-limiting resistor, preventing excessive current from flowing through the photodiode of the optocoupler OC, thus protecting the optocoupler OC.

[0051] Optionally, such as Figure 5As shown, the battery presence detection circuit 2031 may also include a fifth resistor R5. The fifth resistor R5 is connected in series between the system power supply and the collector of the transistor in the optocoupler OC. The fifth resistor R5 is equivalent to a current limiting resistor, which is used to prevent the current flowing through the optocoupler OC from being too large, thereby protecting the optocoupler OC.

[0052] In the case where the detection of whether a battery is connected to the charging module is based on an optocoupler, the target charging module 203 may further include a battery power detection circuit. This battery power detection circuit is connected between the control unit 201 and the charging port 2032, and is used to detect the power level of the target battery. The battery power detection circuit can be as follows: Figure 4 As shown. Battery power detection circuitry can be incorporated into the charging module to achieve battery power detection.

[0053] It is understandable that the battery presence detection circuit is not limited to Figure 4 and Figure 5 In addition to the form, there can be many other forms. This application does not limit the specific form of the battery presence detection circuit.

[0054] Optionally, such as Figure 3 As shown, the target charging module also includes a switching circuit 2033, wherein: the switching circuit 2033 is connected between the charging port 2032 and the programmable power supply 202, and the switching circuit 2033 is also connected to the control unit 201. The switching circuit 2033 is used to adjust the connection relationship between the programmable power supply 202 and the charging port 2032. When the switching circuit 2033 is turned on, the programmable power supply 202 is connected to the charging port 2032; when the switching circuit 2033 is turned off, the connection between the programmable power supply 202 and the charging port 2032 is disconnected.

[0055] The control unit 201 is also used to activate the switch circuit 2033 when the target battery model information cannot be read, controlling the programmable power supply 202 to output a preset charging signal to the target battery. This preset charging signal is used to wake up the target battery. The preset charging signal is a small charging signal applicable to any battery model and will not damage the battery. By setting a switch circuit in the charging module, the connection between the programmable power supply and the battery can be adjusted to control charging. Activating the switch circuit and controlling the programmable power supply to output a preset charging signal to wake up the battery when its model information cannot be read ensures safe reading of the battery model information, preventing damage from charging the battery prematurely when its model is unknown, and thus protecting the battery.

[0056] There are multiple ways to implement the switching circuit 2033.

[0057] In some possible designs, the switching circuit can be implemented based on a transistor. The switching circuit can be a transistor circuit, which includes at least one transistor, wherein: the on / off control terminal of the transistor circuit is connected to the control unit 201, the input terminal of the transistor circuit is connected to the programmable power supply 202, and the output terminal of the transistor circuit is connected to the charging port 2032.

[0058] In a transistor circuit, the transistor can be either a bipolar transistor or a MOSFET.

[0059] In one specific design, the switching circuit 2033 can be as follows: Figure 6 As shown, the switching circuit 2033 includes a first NMOS transistor Q1 and a second NMOS transistor Q2. The gates of the first NMOS transistor Q1 and the second NMOS transistor Q2 are connected to the control unit 201. The source of the first NMOS transistor Q1 is connected to the source of the second NMOS transistor Q2. The drain of the first NMOS transistor Q1 is connected to the programmable power supply 202. The drain of the second NMOS transistor Q2 is connected to the charging port 2032.

[0060] Figure 6 The switching circuit 2033 shown operates on the following principle: when the control unit 201 outputs a high level to the switching circuit 2033, the first NMOS transistor Q1 and the second NMOS transistor Q2 are turned on, and the switching circuit 2033 is turned on; when the control unit 201 outputs a low level to the switching circuit 2033, the first NMOS transistor Q1 and the second NMOS transistor Q2 are turned off, and the switching circuit 2033 is turned off.

[0061] Switch control can be achieved using transistor circuits, which is simple to implement and has low circuit cost.

[0062] It is understandable that switching circuits are not limited to Figure 6 In addition to the form of the switching circuit, there can be many other forms. This application does not limit the specific form of the switching circuit.

[0063] Based on the foregoing Figures 2-6 The charging management system and charging module introduced here can perform multi-battery charging management for different battery models, thereby charging different battery models. The charging management principle of the charging management system is described below:

[0064] (1) When the charging management system starts working, the control unit in the charging management system checks whether a battery is connected to the charging management system through the battery presence detection circuit in each charging module of the charging management system.

[0065] (2) When the battery presence detection circuit in the target charging module detects that the target battery is connected to the charging management system, the control unit in the charging management system communicates with the target battery through the charging port of the target charging module and reads the model information of the target battery.

[0066] (3) If the target battery model information cannot be read, the control unit in the charging management system controls the switching circuit in the target charging module to be turned on and sends a preset charging command to the programmable power supply in the charging management system. The preset charging command carries preset charging parameters. The programmable power supply in the charging management system outputs a preset charging signal corresponding to the preset charging parameters to the target battery to wake up the target battery. If the target battery model information is read, the control unit in the charging management system determines the target charging parameters corresponding to the target battery model information according to the correspondence between the battery model information and the battery charging parameters stored in the control unit in advance. It controls the switching circuit in the target charging module to be turned on and sends a target charging command to the programmable power supply in the charging management system. The target charging command carries the target charging parameters. The programmable power supply in the charging management system outputs a charging signal corresponding to the target charging parameters to the target battery to charge the target battery.

[0067] (4) During the charging process of the target battery, the control unit in the charging management system detects the battery power detection circuit in the target charging module.

[0068] (5) If the target battery is detected to have reached its maximum charge, the control unit in the charging management system controls the switch circuit in the target charging module to disconnect and return to step (1).

[0069] If multiple batteries are detected to be connected to the charging management system at the same time, the control unit in the charging management system executes the above steps (2) to (5) multiple times in sequence to charge the multiple batteries in turn.

[0070] In summary, the charging management system of this application has a programmable power supply and a control unit that can read the battery model information. It can charge the battery with charging parameters that match the battery model information. Multiple batteries of different models can be charged with one charging device. It has strong scalability and good compatibility, and can reduce the number of charger models to be developed.

[0071] The above-disclosed embodiments are merely preferred embodiments of this application and should not be construed as limiting the scope of this application. Therefore, any equivalent variations made in accordance with the claims of this application shall still fall within the scope of this application.

Claims

1. A charging management system, characterized in that, Includes a control unit, a programmable power supply, and at least one charging module, wherein: The control unit is connected to the programmable power supply and each of the at least one charging module. The control unit is used to read the model information of the target battery connected to the target charging module. The target charging module is any one of the at least one charging modules. The programmable power supply is connected to each of the at least one charging module. The programmable power supply is used, under the trigger of the control unit, to output a charging signal to the target battery through the target charging module that matches the signal information of the target battery.

2. The charging management system according to claim 1, characterized in that, Each charging module has the same structural composition; the target charging module includes a battery presence detection circuit and a charging port, wherein: The battery presence detection circuit is connected between the control unit and the charging port, and is used to detect whether the battery is connected to the target charging module. The charging port is also connected to the programmable power supply, which outputs a charging signal through the charging port.

3. The charging management system according to claim 2, characterized in that, The battery presence detection circuit includes a first resistor and a second resistor, wherein: One end of the first resistor is connected to the charging port, the other end of the first resistor is connected to the control unit and one end of the second resistor, and the other end of the second resistor is grounded.

4. The charging management system according to claim 3, characterized in that, The battery presence detection circuit further includes a first capacitor, wherein: The first capacitor is connected in parallel with the second resistor.

5. The charging management system according to claim 2, characterized in that, The battery in-situ detection circuit includes an optocoupler and a third resistor, wherein: The photodiode of the optocoupler is connected to the charging port, the phototransistor of the optocoupler is connected to one end of the third resistor and the control unit, and the other end of the third resistor is grounded.

6. The charging management system according to claim 5, characterized in that, The target charging module further includes a battery power detection circuit, wherein: The battery power detection circuit is connected between the control unit and the charging port, and is used to detect the power of the target battery.

7. The charging management system according to claim 2, characterized in that, The target charging module further includes a switching circuit, wherein: The switching circuit is connected between the charging port and the programmable power supply, and is also connected to the control unit. The switching circuit is used to adjust the connection relationship between the programmable power supply and the charging port. The control unit is also used to turn on the switching circuit and control the programmable power supply to output a preset charging signal to the target battery when the model information cannot be read. The preset charging signal is used to wake up the target battery.

8. The charging management system according to claim 7, characterized in that, The switching circuit is a transistor circuit, and the transistor circuit includes at least one transistor, wherein: The on / off control terminal of the transistor circuit is connected to the control unit, the input terminal of the transistor circuit is connected to the programmable power supply, and the output terminal of the transistor circuit is connected to the charging port.

9. The charging management system according to any one of claims 1-8, characterized in that, The charging management system also includes a system power supply, wherein: The system power supply is connected to the control unit, and the system power supply is used to supply power to the control unit.

10. A charging device, characterized in that, Including the charging management system as described in any one of claims 1-9.

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