CN215817629U - Charging control circuit - Google Patents
Charging control circuit Download PDFInfo
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- CN215817629U CN215817629U CN202121112792.3U CN202121112792U CN215817629U CN 215817629 U CN215817629 U CN 215817629U CN 202121112792 U CN202121112792 U CN 202121112792U CN 215817629 U CN215817629 U CN 215817629U
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Abstract
The utility model is suitable for the field of power supplies, and provides a charging control circuit which comprises an alternating current input module, a rectifying plate, a power supply control unit and a lithium battery unit, wherein the rectifying plate comprises an analog-digital rectifying module and a solar rectifying module, the output port of the rectifying plate is provided with a filtering and denoising module, the filtering and denoising module outputs direct current to be connected to the power supply control unit and the lithium battery unit, the charging control circuit further comprises a solar panel, a lightning protection circuit and a sampling calculation module, and the lithium battery unit is internally provided with a power detection module. According to the utility model, the alternating current input module and the solar panel are used as power input, the alternating current input module can be input by the generator and commercial power, the output of the solar panel is unstable, and after direct current is rectified, stable 24V direct current output is obtained, both the output and the output can charge the lithium battery unit, and the lithium battery unit is also internally provided with the power detection module, so that the detection of the charging power of the lithium battery is realized.
Description
Technical Field
The utility model belongs to the technical field of power supplies, and particularly relates to a charging control circuit.
Background
Most of the existing vehicle-mounted small electric appliances need 24V direct-current power supplies, the 24V power supplies of the existing vehicles are provided by vehicle-mounted storage batteries, but the capacity of the vehicle-mounted storage batteries is small, the electric appliances cannot be powered for a long time, and particularly, if the storage batteries are exhausted, the normal starting of the vehicles can be influenced. Therefore, in order to increase the service time of the in-vehicle electric appliance, it is a feasible solution to increase the capacity of the in-vehicle battery. The lithium battery can be generally added, has long service life, good cycle performance and large battery capacity, and can provide enough electric quantity.
However, the existing charging mode of the lithium battery is basically that surplus power of an engine is converted into electric power to be charged into the lithium battery when a vehicle runs, but the charging mode still cannot ensure the electric quantity of the lithium battery. The use of electric appliances is also influenced, particularly the use frequency of the electric appliances is high for a guarantee vehicle, and the use of the vehicle is seriously influenced by a simple engine charging mode.
SUMMERY OF THE UTILITY MODEL
In view of the above problems, it is an object of the present invention to provide a charge control circuit, which is designed to solve the above problems.
The utility model adopts the following technical scheme:
the charging control circuit comprises an alternating current input module, a rectifying plate, a power supply control unit and a lithium battery unit, the rectifying plate comprises an analog-digital rectifying module and a solar rectifying module, the alternating current input module is connected to the input end of the rectifying plate, the output end of the rectifying plate is provided with a filtering and denoising module which outputs direct current to be connected with the power supply control unit and the lithium battery unit, the lithium battery unit outputs direct current to be connected to the power supply control unit, the charging control circuit further comprises a solar panel, a lightning protection circuit and a sampling calculation module, the solar panel is connected to the solar rectifying module through the lightning protection circuit, the sampling calculation module is connected to the rectifying plate, meanwhile, the sampling calculation module, the lithium battery unit and the power supply control unit are connected through a communication interface, and a power detection module is further arranged in the lithium battery unit.
Furthermore, the module rectification module has two paths, and the number of the lithium battery units is two.
Further, the solar panel is a folding solar panel.
Further, the communication interface is an RS485 interface.
The utility model has the beneficial effects that: the utility model adopts an alternating current input module and a solar panel as power input, the alternating current input module can be provided with input by a generator and commercial power, the output of the solar panel is unstable and direct current is rectified to obtain stable 24V direct current output, both can charge a lithium battery unit, and the lithium battery unit is also internally provided with a power detection module to realize the detection of the charging power of the lithium battery; in addition, the power supply control unit is a control center, and the DC24V direct current supplies power to each subsequent electric appliance after passing through the power supply control unit, so that the power supply requirement is met; meanwhile, the power supply control unit is connected with the sampling calculation module and the lithium battery unit through communication interfaces, so that parameters such as voltage, current and power of each rectification module of the rectification board can be obtained in real time, working parameters of the lithium battery including charging power, current capacity of the battery and the like are obtained, and a complete charging system is formed.
Drawings
Fig. 1 is a structural diagram of a charge control circuit according to an embodiment of the present invention.
Fig. 2 is a structural diagram of an ac input module.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
In order to explain the technical means of the present invention, the following description will be given by way of specific examples.
Fig. 1 shows a structure of a charge control circuit provided in an embodiment of the present invention, and only a part related to the embodiment of the present invention is shown for convenience of explanation.
As shown in fig. 1, the charging control circuit provided in this embodiment includes an ac input module 1, a rectifying plate 2, a power supply control unit 3, and a lithium battery unit 4, where the rectifying plate 2 includes an analog-digital rectifying module 21 and a solar rectifying module 22, the ac input module 1 is connected to an input end of the rectifying plate 2, an output end of the rectifying plate 2 has a filtering and denoising module 23, the filtering and denoising module 23 outputs a dc current to be connected to the power supply control unit 3 and the lithium battery unit 4, the lithium battery unit 4 outputs a dc current to be electrically connected to the power supply control unit 3, the charging control circuit further includes a solar panel 5, a lightning protection circuit 6, and a sampling calculation module 7, the solar panel 5 is connected to the solar rectifying module 22 through the lightning protection circuit 6, the sampling calculation module 7 is connected to the rectifying plate 2, and the sampling calculation module 7, The lithium battery unit 4 is connected with the power supply control unit 3 through a communication interface, and the lithium battery unit 4 is also internally provided with a power detection module 41. The communication interface is an RS485 interface.
The rectifying plate mainly comprises two analog-digital rectifying modules and one solar rectifying module. The two-way analog-digital rectification and rectification module is used for converting the alternating current output by the alternating current input module into stable DC24V for power supply. The ac input module may be supplied with input from the generator and mains electricity. Unstable direct current that solar panel can produce after sunshine shines is converted into stable DC24V power supply by solar energy rectifier module, solar panel is folding solar panel, totally six. Therefore, DC24V direct current output by the analog-digital rectification and rectification module and the solar rectification module can be directly used for supplying power to the power supply control unit and charging the lithium battery unit after being processed by the filtering and denoising module. The lithium battery unit is charged and is provided with the power detection module in the built-in mode, and charging power can be detected. Meanwhile, the lithium battery cell can also directly supply power to the power supply control unit, for example, in the case that the lithium battery cell is fully charged or the charging requirement is less than the output power of the rectifying board, the rectifying board can simultaneously supply the DC24V input to the power supply control unit together with the lithium battery cell. And finally, the power supply control unit reasonably controls and distributes the power according to the power management requirement, and then the power is supplied to the electric appliance of the rear-stage DC 24V.
In this embodiment, the sampling calculation module mainly samples input voltage, current, frequency, output voltage, and current of the rectifying module, calculates input and output powers, and then uploads the parameters to the power supply control unit through RS485 communication.
As a specific structure of the ac input module, as shown in fig. 2, the ac input module includes two generators and two sets of one-out-of-two switches, the generators and the one-out-of-two switches are in one-to-one correspondence, an output end of each set of one-out-of-two switches is further connected with a direction selection switch, one switch of the one set of one-out-of-two switches is connected to the corresponding generator, the other switch of the one set of one-out-of-two switches is connected to a mains supply access interface, the two direction selection switches are single-path gated at the same time, and the two direction selection switches are connected to the rectifying board after being gated and output. In the figure, two switches of one group of two-way switches are respectively marked as K1 and K2, the other group of two-way switches are respectively marked as K3 and K4, the switches are controlled by relays, and K1 and K2, K3 and K4 can only be switched on in one way. K1 is through being connected to the commercial power access interface, and K2 is connected to a generator, and K3 is through being connected to the commercial power access interface, and K4 is connected to another generator.
When the external commercial power is input, K1 and K3 are closed, K2 and K4 are opened, the commercial power directly supplies power for the vehicle-mounted high-power equipment, and when the external commercial power is not input, K2 and K4 are closed, K1 and K3 are opened, and the power generator supplies power for the vehicle-mounted high-power equipment. If the generators supply power, the K5 and the K6 gate the generators with smaller loads to supply power for the rectifier board according to the load conditions of the two generators, so that charging power access is realized.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (4)
1. A charging control circuit is characterized by comprising an alternating current input module, a rectifying plate, a power supply control unit and a lithium battery unit, wherein the rectifying plate comprises an analog-digital rectifying module and a solar rectifying module, the alternating current input module is connected to the input end of the rectifying plate, the output end of the rectifying plate is provided with a filtering and denoising module, the filtering and denoising module outputs direct current to be connected to the power supply control unit and the lithium battery unit, the lithium battery unit outputs direct current to be connected to the power supply control unit, the charging control circuit further comprises a solar panel, a lightning protection circuit and a sampling calculation module, the solar panel is connected to the solar rectifying module through the lightning protection circuit, the sampling calculation module is connected to the rectifying plate, and meanwhile, the sampling calculation module, the lithium battery unit and the power supply control unit are connected through communication interfaces, the lithium battery unit is also internally provided with a power detection module.
2. The charge control circuit of claim 1 wherein said modular rectifier module has two paths and said lithium battery cells have two paths.
3. The charge control circuit of claim 2, wherein said solar panel is a folded solar panel having 6 pieces.
4. The charge control circuit of claim 3, wherein the communication interface is an RS485 interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121112792.3U CN215817629U (en) | 2021-05-24 | 2021-05-24 | Charging control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121112792.3U CN215817629U (en) | 2021-05-24 | 2021-05-24 | Charging control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215817629U true CN215817629U (en) | 2022-02-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121112792.3U Active CN215817629U (en) | 2021-05-24 | 2021-05-24 | Charging control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215817629U (en) |
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2021
- 2021-05-24 CN CN202121112792.3U patent/CN215817629U/en active Active
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