Power supply switching charging circuit of main power supply and auxiliary power supply

Abstract

The utility model discloses a power supply switching charging circuit for a main power supply and an auxiliary power supply, which comprises a power storage main body, a control module, a switching module, the main power supply, the auxiliary power supply and a power supply management module are arranged in the power storage main body, and the output end of the power supply management module is electrically connected with the input end of the switching module. The two output ends of the switching module are electrically connected with the main power supply and the auxiliary power supply respectively, the main power supply is electrically connected with a first sampling module, the output end of the first sampling module is electrically connected with the control module, and the first sampling module can collect the temperature of the main power supply and transmit a temperature signal of the main power supply to the control module; the switching module can be used for controlling connection and disconnection of the power supply management module, the main power supply and the auxiliary power supply; the auxiliary power supply is charged when the temperature of the main power supply rises, and the main power supply is charged when the temperature of the auxiliary power supply rises, so that compared with a charging mode of continuously charging the main power supply, the auxiliary power supply is charged after the main power supply is fully charged, and the service life of the main power supply and the auxiliary power supply is prolonged.

Description

Technical Field

[0001] This utility model belongs to the technical field of battery power supply, specifically a power switching and charging circuit for main power supply and auxiliary power supply. Background Technology

[0002] Rechargeable lithium battery products on the market often come with a backup alkaline battery power supply system, which can switch to a backup alkaline battery to continue supplying power when the lithium battery is low, thereby increasing the power capacity.

[0003] For example, the patent document "CN108215906B" discloses "a mobile power bank control system", which uses an auxiliary power supply to enhance battery capacity. Both the main power supply and the auxiliary power supply need to be charged after use. However, the existing technology charges the main power supply first, and then charges the auxiliary power supply after the main power supply is fully charged. In the high temperature environment of summer, continuous charging of the main power supply will cause the main power supply temperature to become too high, which may cause danger or reduce the service life of the main power supply. Utility Model Content

[0004] The purpose of this invention is to provide a power switching and charging circuit for main power supply and auxiliary power supply, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A power switching and charging circuit for a main power supply and an auxiliary power supply includes a battery storage body. The battery storage body contains a control module, a switching module, a main power supply, an auxiliary power supply, and a power management module. A heat insulation plate is provided between the main power supply and the auxiliary power supply. The input terminal of the power management module is connected to an external circuit, and the output terminal of the power management module is electrically connected to the input terminal of the switching module. The two output terminals of the switching module are respectively electrically connected to the main power supply and the auxiliary power supply. The main power supply is electrically connected to a sampling module one, and the output terminal of the sampling module one is electrically connected to the control module. The auxiliary power supply is electrically connected to a sampling module two, and the output terminal of the sampling module two is electrically connected to the control module. The output terminal of the control module is electrically connected to the input terminal of the switching module.

[0007] The first sampling module can collect the temperature of the main power supply and transmit the temperature signal of the main power supply to the control module; the second sampling module can collect the temperature of the auxiliary power supply and transmit the temperature signal of the auxiliary power supply to the control module; the control module can be used to control the working state of the switching module, and the switching module can be used to control the power management module to turn on and off with the main power supply and the auxiliary power supply.

[0008] In a further technical solution, the switching module includes a switch module one and a switch module two. The input terminal of switch module one is electrically connected to the power management switching module, the output terminal of switch module one is electrically connected to the input terminal of the main power supply, and switch module one is electrically connected to the first output terminal of the control module. The input terminal of switch module two is electrically connected to the power management switching module, the output terminal of switch module two is electrically connected to the input terminal of the auxiliary power supply, and switch module two is electrically connected to the first output terminal of the control module.

[0009] In a further technical solution, the control module includes a comparison module one, a comparison module two, a logic operation module, and an MCU microprocessor. The input terminal of the comparison module one is electrically connected to the sampling module one, and the output terminal of the comparison module one is connected to the logic operation module. The logic operation module is electrically connected to the MCU microprocessor, and the MCU microprocessor is electrically connected to the switch module one. The input terminal of the comparison module two is electrically connected to the sampling module two, and the output terminal of the comparison module two is connected to the logic operation module. The logic operation module is electrically connected to the MCU microprocessor, and the MCU microprocessor is electrically connected to the switch module two.

[0010] In a further technical solution, the MCU microprocessor is electrically connected to the power management module, and the MCU microprocessor is electrically connected to an alarm module, which includes a buzzer and an alarm light.

[0011] In a further technical solution, the first comparison module includes a first comparator and a first memory, the first memory being electrically connected to the first comparator; the first sampling module includes a first detection membrane, the first detection membrane being installed on the main power supply; the second comparison module includes a second comparator and a second memory, the second memory being electrically connected to the second comparator; the second sampling module includes a second detection membrane, the second detection membrane being installed on the auxiliary power supply.

[0012] In a further technical solution, the warning light ring array is located on the surface of the battery storage body.

[0013] The beneficial effects of this utility model are:

[0014] This invention charges the auxiliary power supply when the temperature of the main power supply rises, and charges the main power supply when the temperature of the auxiliary power supply rises. Compared with the charging method of continuously charging the main power supply, this invention charges the auxiliary power supply only after the main power supply is fully charged, which prevents charging in high-temperature environments and extends the service life of both the main and auxiliary power supplies. Compared with the charging method of continuously charging the main power supply and stopping or reducing the charging rate when the temperature is high, this invention improves charging efficiency.

[0015] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0016] Figure 1 : A schematic diagram of the overall structure of this utility model.

[0017] Figure 2 The process of this utility model Figure 1 .

[0018] Figure 3 The process of this utility model Figure 2 .

[0019] Reference numerals: 1. Energy storage unit; 2. Control module; 3. Switching module; 31. Switching module one; 32. Switching module two; 4. Main power supply; 5. Auxiliary power supply; 6. Power management module; 7. Heat insulation board; 8. Sampling module one; 9. Sampling module two; 10. Warning module; Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0021] Please refer to Figure 1-3 ;

[0022] A power switching charging circuit for a main power supply 4 and an auxiliary power supply 5 is applied to a charging circuit for a battery equipped with a main power supply 4 and an auxiliary power supply 5. This circuit regulates the cross-charging of the main power supply 4 and the auxiliary power supply 5, so that when the temperature of the main power supply 4 reaches a certain threshold, charging is switched to the auxiliary power supply 5. Specifically, the circuit includes a battery storage unit 1, which houses a control module 2, a switching module 3, a main power supply 4, an auxiliary power supply 5, and a power management module 6. A heat insulation plate 7 is provided between the main power supply 4 and the auxiliary power supply 5, separating them into two spaces. The heat insulation plate 7 is preferably a ceramic matrix composite material. It is divided into independent chambers; the input terminal of the power management module 6 is connected to the external circuit, the output terminal of the power management module 6 is electrically connected to the input terminal of the switching module 3, and the two output terminals of the switching module 3 are electrically connected to the main power supply 4 and the auxiliary power supply 5 respectively, so that the output terminal of the power management module 6 can be connected to the main power supply 4 or the auxiliary power supply 5 through the switching module 3; the main power supply 4 is electrically connected to the sampling module 1 8, the output terminal of the sampling module 1 8 is electrically connected to the control module 2, the auxiliary power supply 5 is electrically connected to the sampling module 2 9, the output terminal of the sampling module 2 9 is electrically connected to the control module 2, and the output terminal of the control module 2 is electrically connected to the input terminal of the switching module 3;

[0023] Sampling module 1 8 can collect the temperature of the main power supply 4 and transmit the temperature signal of the main power supply 4 to the control module 2; sampling module 2 9 can collect the temperature of the auxiliary power supply 5 and transmit the temperature signal of the auxiliary power supply 5 to the control module 2; the control module 2 can be used to control the working state of the switching module 3, and the switching module 3 can be used to control the power management module 6 and the main power supply 4 and auxiliary power supply 5 to be turned on and off.

[0024] Specifically, in the initial state, the temperatures of both the main power supply 4 and the auxiliary power supply 5 are less than 45°C. The temperature signals acquired by sampling modules 1 (8) and 2 (9) are also less than 45°C. At this time, control module 2 sends a command to switching module 3. Switching module 3 preferentially connects power management module 6 to the main power supply 4. Thus, the external circuit supplies power to the main power supply 4 through power management module 6. As the charging time of the main power supply 4 increases, its temperature rises until it reaches 45°C. Once module 1 acquires a temperature greater than 45°C, it transmits this temperature to control module 2. Control module 2 then sends a command to switching module 3, causing it to disconnect power management module 6 from the main power supply 4. Simultaneously, it activates the connection between power management module 6 and the auxiliary power supply 5, connecting them. This means power management module 6 charges the auxiliary power supply 5 until the auxiliary power supply 5... When the temperature exceeds 45℃, sampling module 29 transmits the collected temperature signal (greater than 45℃) to control module 2. It's worth noting that as the temperature of auxiliary power supply 5 rises, the temperature of main power supply 4 decreases. When the temperature of auxiliary power supply 5 exceeds 45℃ and the temperature of main power supply 4 falls below 45℃, control module 2 issues a command to switch switching module 3 to main power supply 4. By charging auxiliary power supply 5 when the temperature of main power supply 4 rises, and charging main power supply 4 when the temperature of auxiliary power supply 5 rises, compared to continuously charging main power supply 4, this application charges auxiliary power supply 5 only after main power supply 4 is fully charged. This prevents charging in high-temperature environments, extends the lifespan of both main power supply 4 and auxiliary power supply 5, and improves charging efficiency compared to continuously charging main power supply 4 and stopping or reducing charging rate when the temperature is high.

[0025] In this embodiment, the switching module 3 includes a first switch module 31 and a second switch module 32. The input terminal of the first switch module 31 is electrically connected to the power management switching module 3, the output terminal of the first switch module 31 is electrically connected to the input terminal of the main power supply 4, and the first output terminal of the control module 2 is electrically connected. The input terminal of the second switch module 32 is electrically connected to the power management switching module 3, the output terminal of the second switch module 32 is electrically connected to the input terminal of the auxiliary power supply 5, and the first output terminal of the control module 2 is electrically connected.

[0026] It is worth noting that when the temperature of both the main power supply 4 and the auxiliary power supply 5 exceeds 45°C, the switching module 3 shuts down both the main power supply 4 and the auxiliary power supply 5.

[0027] In this embodiment, the control module 2 includes a comparison module 1, a comparison module 2, a logic operation module, and an MCU microprocessor. The input terminal of the comparison module 1 is electrically connected to the sampling module 1 8, the output terminal of the comparison module 1 is connected to the logic operation module, the logic operation module is electrically connected to the MCU microprocessor, and the MCU microprocessor is electrically connected to the switch module 1 31. The input terminal of the comparison module 2 is electrically connected to the sampling module 2 9, the output terminal of the comparison module 2 is connected to the logic operation module, the logic operation module is electrically connected to the MCU microprocessor, and the MCU microprocessor is electrically connected to the switch module 2 32. Further, the comparison module 1 includes a comparator 1 and a memory 1, with the memory 1 and comparator 1 electrically connected. The sampling module 1 8 includes a probe membrane 1, which is mounted on the main power supply 4. The comparison module 2 includes a comparator 2 and a memory 2, with the memory 2 and comparator 2 electrically connected. The sampling module 2 9 includes a probe membrane 2, which is mounted on the auxiliary power supply 5.

[0028] Specifically, the operator writes the digital value corresponding to the temperature threshold of 45℃ for the main power supply 4 into the MCU microprocessor memory 1; simultaneously writes the same parameter of the temperature threshold of 45℃ for the auxiliary power supply 5 into the memory 2; and places the first probe film flat on the center area of ​​the main power supply 4 casing, and the second probe film flat on the auxiliary power supply 5 casing.

[0029] In this embodiment, the MCU microprocessor is electrically connected to the power management module 6, and the MCU microprocessor is electrically connected to the warning module 10. The warning module 10 includes a buzzer and a warning light. Furthermore, the warning light is arranged in a ring array on the surface of the battery storage body 1. When the main power supply 4 or the auxiliary power supply 5 is charging, the warning light displays green. When the temperature of both the main power supply 4 and the auxiliary power supply 5 is greater than 45°C, the warning light displays red, and the buzzer sounds an alarm.

[0030] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0031] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

Claims

1. A power switching charging circuit for a main power supply (4) and an auxiliary power supply (5), characterized in that, The device includes a battery storage unit (1), which contains a control module (2), a switching module (3), a main power supply (4), an auxiliary power supply (5), and a power management module (6). A heat insulation plate (7) is provided between the main power supply (4) and the auxiliary power supply (5). The input terminal of the power management module (6) is connected to an external circuit, and the output terminal of the power management module (6) is electrically connected to the input terminal of the switching module (3). The two output terminals of the switching module (3) are electrically connected to the main power supply (4) and the auxiliary power supply (5), respectively. The main power supply (4) is electrically connected to a sampling module one (8), and the output terminal of the sampling module one (8) is electrically connected to the control module (2). The auxiliary power supply (5) is electrically connected to a sampling module two (9), and the output terminal of the sampling module two (9) is electrically connected to the control module (2). The output terminal of the control module (2) is electrically connected to the input terminal of the switching module (3). The sampling module one (8) can collect the temperature of the main power supply (4) and transmit the temperature signal of the main power supply (4) to the control module (2); the sampling module two (9) can collect the temperature of the auxiliary power supply (5) and transmit the temperature signal of the auxiliary power supply (5) to the control module (2); the control module (2) can be used to control the working state of the switching module (3), the working state of the switching module (3), and the switching module (3) can be used to control the power management module (6) and the main power supply (4) and the auxiliary power supply (5) to be turned on and off.

2. The power switching and charging circuit for a main power supply (4) and an auxiliary power supply (5) according to claim 1, characterized in that, The switching module (3) includes a first switching module (31) and a second switching module (32). The input terminal of the first switching module (31) is electrically connected to the power management switching module (3), the output terminal of the first switching module (31) is electrically connected to the input terminal of the main power supply (4), and the first switching module (31) is electrically connected to the first output terminal of the control module (2). The input terminal of the second switching module (32) is electrically connected to the power management switching module (3), the output terminal of the second switching module (32) is electrically connected to the input terminal of the auxiliary power supply (5), and the first output terminal of the control module (2).

3. The power switching and charging circuit for a main power supply (4) and an auxiliary power supply (5) according to claim 2, characterized in that, The control module (2) includes a comparison module one, a comparison module two, a logic operation module and an MCU microprocessor. The input terminal of the comparison module one is electrically connected to the sampling module one (8). The output terminal of the comparison module one is connected to the logic operation module. The logic operation module is electrically connected to the MCU microprocessor. The MCU microprocessor is electrically connected to the switch module one (31). The input terminal of the comparison module two is electrically connected to the sampling module two (9). The output terminal of the comparison module two is connected to the logic operation module. The logic operation module is electrically connected to the MCU microprocessor. The MCU microprocessor is electrically connected to the switch module two (32).

4. The power switching and charging circuit for a main power supply (4) and an auxiliary power supply (5) according to claim 3, characterized in that, The MCU microprocessor is electrically connected to the power management module (6), and the MCU microprocessor is electrically connected to an alarm module (10), which includes a buzzer and an alarm light.

5. A power switching charging circuit for a main power supply (4) and an auxiliary power supply (5) according to claim 3, characterized in that, The first comparison module includes a first comparator and a first memory, the first memory being electrically connected to the first comparator. The first sampling module (8) includes a first detection membrane, the first detection membrane being installed on the main power supply (4). The second comparison module includes a second comparator and a second memory, the second memory being electrically connected to the second comparator. The second sampling module (9) includes a second detection membrane, the second detection membrane being installed on the auxiliary power supply (5).

6. The power switching charging circuit for a main power supply (4) and an auxiliary power supply (5) according to claim 4, characterized in that, The warning light ring array is located on the surface of the battery storage body (1).

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