CN211428977U - Battery charging device, solar charger and sharing vehicle - Google Patents
Battery charging device, solar charger and sharing vehicle Download PDFInfo
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- CN211428977U CN211428977U CN202020069609.5U CN202020069609U CN211428977U CN 211428977 U CN211428977 U CN 211428977U CN 202020069609 U CN202020069609 U CN 202020069609U CN 211428977 U CN211428977 U CN 211428977U
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Abstract
The utility model discloses a battery charging device, a solar charger and a sharing vehicle, which relate to the technical field of batteries, and the battery charging device comprises a first charging module, a second charging module, a detection module and a control module; the first charging module is connected with the second charging module in parallel; the detection module is respectively connected with the first charging module and the second charging module and is used for acquiring charging information of the battery and transmitting the charging information to the control module; the control module is respectively connected with the first charging module and the second charging module and is used for controlling the first charging module and the second charging module to be opened and/or closed according to the charging information. The first charging module comprises a linear charging circuit, and the second charging module comprises a switch charging circuit. Through combining linear charging and the switch two kinds of modes that charge, select different charging methods based on the charging current of difference, choose switch charging method for use when illumination is sufficient, chose linear charging method for use when illumination is not enough, effectively promoted the utilization efficiency of solar energy.
Description
Technical Field
The utility model relates to a battery technology field especially relates to a battery charging device, solar charger and sharing vehicle.
Background
With the rise of new energy, solar energy is widely applied to various industries. In a shared bicycle, solar energy is widely used. Solar energy has the advantages of universality, no regional limitation, no pollution, sustainable utilization and the like, but the energy which can be collected and utilized is very little. In order to improve the utilization rate of solar energy, people often can improve the utilization rate of solar energy by enlarging the area of the solar panel and improving the efficiency of the solar panel. But increasing the area of the solar panel will take up more space and increase the cost. In addition, the efficiency of solar panels is determined by the material, and the materials used by the solar panels developed at present are difficult to make a major breakthrough in efficiency. In order to improve the utilization rate of solar energy in the shared bicycle, measures can be taken from the energy collection mode.
The acquisition mode of the solar energy on the shared bicycle is as follows: after the solar panel collects the energy, the energy is converted into voltage and current, and a small battery in the vehicle lock is charged through the charging IC. If a switch charging IC is selected, large-current charging can be achieved, but the static current of the charging IC is large, when the current ratio is small, most of current can be consumed by the charging IC, and the current charged into the battery is small; if the linear charging IC is selected, the static current of the charging IC is small, the charging of the small current is improved, but the charging current of the linear charging IC is not large and is generally below 1A, the heating is serious, and under the condition of sufficient illumination, more solar energy cannot be collected.
Accordingly, those skilled in the art have made an effort to develop a battery charging apparatus that can combine a switch charging method and a linear charging method to improve charging efficiency and more fully utilize solar energy when charging a battery using solar energy.
SUMMERY OF THE UTILITY MODEL
In order to achieve the above object, the present invention provides a battery charging device, which comprises a first charging module, a second charging module, a detection module and a control module;
the first charging module and the second charging module are connected in parallel;
the detection module is respectively connected with the first charging module and the second charging module and is used for acquiring charging information of the battery and transmitting the charging information to the control module;
the control module is respectively connected with the first charging module and the second charging module and is used for controlling the first charging module and the second charging module to be opened and/or closed according to the charging information.
Further, the charging information includes a charging current.
Further, when the charging current is greater than or equal to a preset current of the control module, the control module turns off the first charging module and turns on the second charging module; when the charging current is smaller than the preset current, the control module closes the second charging module and opens the first charging module.
Further, the first charging module comprises a linear charging circuit, and the second charging module comprises a switch charging circuit.
Further, the detection module comprises a resistor, two ends of the resistor are respectively connected to the control module, and the control module converts the voltage of the resistor into the charging current.
Furthermore, the circuit also comprises an operational amplifier circuit, wherein the resistor is connected to the operational amplifier circuit, and the operational amplifier circuit amplifies the voltage of the resistor and outputs the amplified voltage to the control module.
Further, the control module comprises a micro control unit; the micro control unit is respectively connected with the first charging module and the second charging module.
Furthermore, a logic gate circuit is arranged between the micro control unit and the first charging module, or a logic gate circuit is arranged between the micro control unit and the second charging module.
Further, the logic gate circuit is an inverter circuit.
The utility model also provides a solar charger, include as above battery charging device.
The utility model discloses an on the other hand still provides a bicycle or vehicle using motor, include as above solar charger.
The utility model provides a battery charging device has following technological effect:
through combining linear charging and the switch two kinds of modes that charge, select different charging methods based on the charging current of difference, choose switch charging method for use when illumination is sufficient, chose linear charging method for use when illumination is not enough, effectively promoted the utilization efficiency of solar energy. Compare in increasing solar panel and promote solar energy utilization efficiency, adopt the utility model discloses a device need not to increase solar panel's area, when using solar energy in bicycle or vehicle using motor, because the limitation in space, the utility model discloses a battery charging device can need not to occupy more spaces and need not to increase extra cost when promoting solar energy utilization efficiency.
The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings, so as to fully understand the objects, the features and the effects of the present invention.
Drawings
Fig. 1 is a schematic structural diagram of a preferred embodiment of the present invention;
FIG. 2 is a circuit diagram of a preferred embodiment of the present invention;
fig. 3 is a schematic diagram of a linear charging circuit according to a preferred embodiment of the present invention;
fig. 4 is a schematic diagram of a switch charging circuit according to a preferred embodiment of the present invention;
fig. 5 is a schematic diagram of an operational amplifier circuit according to a preferred embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.
It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the drawings only show the components related to the present invention rather than being drawn according to the number, shape and size of the components in actual implementation, and the form, amount and ratio of the components in actual implementation may be changed arbitrarily, and the layout of the components may be more complicated.
Some exemplary embodiments of the invention have been described for illustrative purposes, and it is to be understood that the invention may be practiced otherwise than as specifically described.
As shown in fig. 1, the battery charging device of the present invention includes two parallel-connected charging modules: a first charging module 20 and a second charging module 30, a detection module 40, and a control module 50. The first charging module 20 and the second charging module 30 are both connected to the energy harvesting device 10. The energy collected by the energy collection device 10 is converted into electric energy, and the battery 60 can be charged when any one of the first and second charging modules 20 and 30 is in an open state. The first charging module 20 and the second charging module 30 have different rated operating parameters, such as different rated currents and different rated voltages. When the electric energy that the energy of collecting through energy harvesting device 10 collection converted is unstable, the utility model discloses a battery charging device can select the module of charging that suits with charging voltage or charging current according to charging voltage or charging current's change to promote the utilization efficiency to the energy. In order to detect a change in the charging voltage or the charging current, a detection module 40 is provided. The detection module 40 is disposed between the charging module and the battery 60 for collecting charging information. The detection module 40 transmits the collected charging information to the control module 50. The control module 50 is connected to the first charging module 20 and the second charging module 30, and controls one of the two charging modules to be turned on and the other to be turned off or turned on simultaneously according to the charging information collected by the detection module 40, and the control module can be set according to actual needs.
The battery charging device of the present invention can be applied to the situation where the energy collected by the various energy collecting devices 10 is unstable, for example, the energy collecting devices 10 are solar panels, and the charging voltage or the charging current converted by solar energy is constantly changed due to the variation of the illumination intensity; or the energy collecting device 10 is a wind power generation device, and the generated charging voltage or current is continuously changed due to the instability of wind power. The utility model discloses a battery 60 charging device can select suitable module of charging according to the change information of the electric energy that the energy that energy collection device 10 collected converted to promote the utilization efficiency to other forms of energy like wind energy, solar energy. Preferably, as shown in fig. 2, the energy harvesting device 10 is provided as a solar panel 11.
When the solar panel is used for charging the battery 60, the switch charging and the linear charging are two charging modes commonly used in the prior art, the switch charging can realize large-current charging, but the static current of the charging circuit is large, and when the current is small, the switch charging current consumes most of the current; the static current of the linear charging is small, so that the charging is improved, but the charging current of the linear charging is not large and is generally below 1A. Therefore, the second charging module 30 is configured as a switch charging circuit and the first charging module 20 is configured as a linear charging circuit according to different characteristics of switch charging and linear charging. The utility model provides a switch charging circuit and linear charging circuit have extensively used in prior art, and any one kind utilizes switch charging circuit or switch charging IC (integrated circuit) of switch charging principle, utilizes linear charging circuit or the linear charging IC of linear charging principle all can use in the device of the utility model discloses an in, no longer repeated here. Preferably, as shown in fig. 2, the first charging module 20 is a linear charging IC21, and the second charging module 30 is a switch charging IC 31. Preferably, the circuit of the first charging module 20 is as shown in fig. 3, and the circuit of the second charging module 30 is as shown in fig. 4.
The solar panel is used to charge the battery 60, when the illumination intensity changes, the generated charging current changes, and the control module 50 turns off and/or turns on the linear charging IC and/or the switch charging IC according to different charging currents, thereby realizing the switching of different charging modes. A current threshold can be preset in the control module 50 according to actual needs, and when the charging current is greater than the threshold, the control module 50 closes the linear charging IC21 and opens the switch charging IC 31; conversely, when the charging current is less than the threshold, the control module 50 turns on the linear charging IC21 and turns off the switch charging IC 31.
In some embodiments, the detection module 40 directly collects the charging current and transmits it to the control module 50.
In some embodiments, as shown in FIG. 2, the detection module 40 includes a resistor R1, preferably R1 having a resistance of 10m Ω. The resistor R1 is disposed between the battery 60 and the linear charging IC21 and the switching charging IC31 connected in parallel, and when a charging current flows through the resistor R1, the voltage of the resistor R1 is collected and transmitted to the control module 50, and the control module 50 converts the voltage into a current, thereby obtaining charging current information.
As shown in fig. 2, the control module 50 may employ a Micro Control Unit (MCU) 51. Two ends of the resistor R1 are connected to the input end of the operational amplifier circuit U2 and are connected to the ADC end of the MCU through the operational amplifier circuit U2. The micro control unit 51 converts the voltage drop amplified via the op-amp circuit U2 into a current. Preferably, the op-amp circuit U2 is as shown in fig. 5.
In some embodiments, the micro control unit 51 is connected to the linear charging IC21 and the switch charging IC31 through GPIO terminals, respectively. GPIO terminals of the micro control unit 51 are connected to the EN terminal of the linear charging IC21 and the EN terminal of the switching charging IC31, respectively. Meanwhile, in order to enable the signal output by the GPIO terminal to achieve the effect of simultaneously controlling the linear charging IC21 and the switch charging IC31 to be in opposite working states, a not gate circuit may be disposed between the linear charging IC21 and the GPIO, or as shown in fig. 2, a not gate circuit U1 is disposed between the switch charging IC31 and the GPIO; either of these two ways can be selected according to actual needs. Preferably, a not gate circuit U1 is provided between the switch charging IC31 and the GPIO. Other logic gates may be used so that the GPIO terminals output to the linear charging IC21 and the switch charging IC31 are at opposite levels.
The current threshold is preset in the micro control unit 51, preferably, the threshold is 500mA, and different thresholds can be set according to actual sizes, and the protection scope of the present invention is not limited to the threshold of 500 mA. When the collected charging current is less than 500mA, the GPIO of the micro control unit 51 controls the linear charging IC21 to be opened, meanwhile, a signal output by the GPIO passes through the NOT gate circuit U1, the level is turned over, the switch charging IC31 is closed, and at the moment, the battery 60 is charged in a linear charging mode; when the collected charging current is larger than 500mA, the GPIO of the micro control unit 51 controls the linear charging IC21 to be turned off, and simultaneously, the signal output by the GPIO passes through the not gate circuit U1, the level is reversed, the switch charging IC31 is turned on, and at this time, the battery 60 is charged in a switch charging mode.
In some embodiments, the linear charging IC21 and the switch charging IC31 may also be connected to different ports of the micro control unit 51, and different level signals may be output by the micro control unit 51 at the port connected to the linear charging IC21 and the port connected to the switch charging IC31, respectively, so as to control the linear charging IC21 and the switch charging IC31 to be turned on and/or off.
The utility model discloses a battery charging device's theory of operation does:
a double-charging circuit structure with parallel linear charging and switch charging is adopted, and charging current is collected through a resistor R1 of 10m omega and an operational amplifier circuit U2. During charging, current flows into the battery 60 from the switch charging IC31 by default, a voltage drop is generated on the resistor R1, the voltage drop is transmitted to the operational amplifier circuit U2, the voltage is amplified by the operational amplifier circuit U2 and then output to the ADC interface of the micro control unit 51, the ADC interface reads the voltage amplified by the operational amplifier circuit U2 and converts the voltage into a current, the current is the collected charging current, and then the micro control unit 51 selects the linear charging IC21 or the switch charging IC31 according to the charging current, so that the charging device works in a switch charging mode or a linear charging mode under different illumination intensities, thereby improving the utilization rate of solar energy and obtaining better charging efficiency.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (11)
1. A battery charging device is characterized by comprising a first charging module, a second charging module, a detection module and a control module;
the first charging module and the second charging module are connected in parallel;
the detection module is respectively connected with the first charging module and the second charging module and is used for acquiring charging information of the battery and transmitting the charging information to the control module;
the control module is respectively connected with the first charging module and the second charging module and is used for controlling the first charging module and the second charging module to be opened and/or closed according to the charging information.
2. The battery charging apparatus of claim 1, wherein the charging information comprises a charging current.
3. The battery charging apparatus of claim 2, wherein the control module turns off the first charging module and turns on the second charging module when the charging current is equal to or greater than a preset current of the control module; when the charging current is smaller than the preset current, the control module closes the second charging module and opens the first charging module.
4. The battery charging apparatus of claim 1, wherein the first charging module comprises a linear charging circuit and the second charging module comprises a switched charging circuit.
5. The battery charging apparatus according to claim 2, wherein the detection module comprises a resistor, two ends of the resistor are respectively connected to the control module, and the control module converts a voltage of the resistor into the charging current.
6. The battery charging apparatus of claim 5, further comprising an operational amplifier circuit, wherein the resistor is connected to the operational amplifier circuit, and the operational amplifier circuit amplifies a voltage of the resistor and outputs the amplified voltage to the control module.
7. The battery charging apparatus of claim 1, wherein the control module comprises a micro-control unit; the micro control unit is respectively connected with the first charging module and the second charging module.
8. The battery charging apparatus of claim 7, wherein a logic gate circuit is provided between the micro control unit and the first charging module, or a logic gate circuit is provided between the micro control unit and the second charging module.
9. The battery charging apparatus of claim 8, wherein the logic gate circuit is a not gate circuit.
10. A solar charger, characterized by comprising a battery charging device according to any one of claims 1-9.
11. A shared vehicle comprising the solar charger of claim 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020069609.5U CN211428977U (en) | 2020-01-13 | 2020-01-13 | Battery charging device, solar charger and sharing vehicle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020069609.5U CN211428977U (en) | 2020-01-13 | 2020-01-13 | Battery charging device, solar charger and sharing vehicle |
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| CN211428977U true CN211428977U (en) | 2020-09-04 |
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| CN202020069609.5U Active CN211428977U (en) | 2020-01-13 | 2020-01-13 | Battery charging device, solar charger and sharing vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116667505A (en) * | 2023-08-01 | 2023-08-29 | 深圳市微源半导体股份有限公司 | Charging control method, device and system and electronic equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116667505A (en) * | 2023-08-01 | 2023-08-29 | 深圳市微源半导体股份有限公司 | Charging control method, device and system and electronic equipment |
| CN116667505B (en) * | 2023-08-01 | 2024-03-12 | 深圳市微源半导体股份有限公司 | Charging control method, device and system and electronic equipment |
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