CN110601322A - Battery charging device and charging method thereof - Google Patents
Battery charging device and charging method thereof Download PDFInfo
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- CN110601322A CN110601322A CN201910907133.XA CN201910907133A CN110601322A CN 110601322 A CN110601322 A CN 110601322A CN 201910907133 A CN201910907133 A CN 201910907133A CN 110601322 A CN110601322 A CN 110601322A
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- 238000002955 isolation Methods 0.000 claims abstract description 38
- 230000001360 synchronised effect Effects 0.000 claims abstract description 32
- 238000012937 correction Methods 0.000 claims abstract description 28
- 238000005070 sampling Methods 0.000 claims description 32
- 238000001514 detection method Methods 0.000 claims description 11
- 230000010363 phase shift Effects 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 abstract description 19
- 230000000694 effects Effects 0.000 abstract description 5
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- 238000012360 testing method Methods 0.000 description 2
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- 230000009286 beneficial effect Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
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- Engineering & Computer Science (AREA)
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention provides a battery charging device and a charging method thereof, wherein the device comprises a conversion TOP framework, the conversion TOP framework comprises a control module, a PFC correction circuit (109), an isolation transformer (102) and an output synchronous rectification module (103); the output end of the control module and the output end of the PFC correction circuit (109) are connected with the input end of an isolation transformer (102); the output end of the isolation transformer (102) is connected with the output synchronous rectification module (103). The invention has the advantages of simple structure, high charging efficiency, good reliability, strong universality, high efficiency, energy conservation, convenient and safe use and strong operability, has a particularly good effect on the use in areas with unstable power grids, and brings great convenience and help to users.
Description
Technical Field
The invention relates to the technical field of battery charging, in particular to a battery charging device and a charging method thereof, and particularly relates to a battery charger which is used for high-power large-current output and has a remarkable charger effect.
Background
The charger in the market at present is a charger which inputs high Power for a narrow voltage range, and is basically in an area with unstable working discomfort voltage in the narrow range, and the input harmonic distortion of a PFC (Power Factor Correction) free Correction circuit is serious, so that the interference on a Power grid is great, and the load of the Power grid is increased to accelerate the aging of wires.
A battery charging circuit and a charger as disclosed in patent document CN110011386A, the battery charging circuit including a control circuit, a battery switch circuit, and an anti-reverse connection circuit; the control circuit is used for detecting the voltage of the rechargeable battery, generating high and low levels according to the voltage of the rechargeable battery and sending the high and low levels to the battery switch circuit; the battery switch circuit is connected with the control circuit and is used for connecting the charging loop of the rechargeable battery when receiving the low level sent by the control circuit and disconnecting the charging loop of the rechargeable battery when receiving the high level sent by the control circuit; the reverse connection preventing circuit is connected with the battery switch circuit and is used for connecting the rechargeable battery, and when the positive and negative reverse connections of the rechargeable battery are detected, the battery switch circuit is controlled to disconnect the charging loop of the rechargeable battery.
In the market, chargers similar to the chargers described above are all high-frequency hard switching power supply topology structures, the efficiency is about 80%, energy waste is serious, continuous development is not facilitated, and the requirement of national new energy cannot be met.
Therefore, the novel battery charging device and the charging method thereof have high value and significance.
Disclosure of Invention
In view of the defects in the prior art, the present invention provides a battery charging device and a charging method thereof.
The invention provides a battery charging device, which comprises a conversion TOP framework, wherein the conversion TOP framework comprises a control module, a PFC (power factor correction) circuit, an isolation transformer and an output synchronous rectification module;
the output end of the control module and the output end of the PFC correction circuit are connected with the input end of an isolation transformer; the output end of the isolation transformer is connected with the output synchronous rectification module;
preferably, the control module comprises the LLC control module 106 and/or a full-bridge phase shift circuit;
preferably, the battery charging apparatus further comprises an input rectification module; the input end of the input rectifying module is connected with the power input, and the output end of the input rectifying module is connected with the input end of the PFC correcting circuit;
preferably, the battery charging apparatus further comprises an output switch; one end of the output switch is connected with the output synchronous rectification module, and the other end of the output switch is used as a charging output port;
preferably, the output switch comprises a relay and/or a MOSFET;
preferably, the battery charging device further comprises a sampling module, an auxiliary power supply and a main control module; the input end of the sampling module is respectively connected with the isolation transformer, the output synchronous rectification module and the output switch, and the output end of the sampling module is connected with the main control module; one end of the auxiliary power supply is connected with the PFC correction circuit, and the other end of the auxiliary power supply is connected with the main control module; the main control module is connected with the output switch;
preferably, the output charging voltage range of the battery charging device comprises 6V-72V, and the output charging current is 1-200A;
the battery charging device comprises at least one charging output voltage step;
the battery charging device comprises at least one charging output current gear.
The invention provides a battery charging device, which comprises a conversion TOP framework, wherein the conversion TOP framework comprises a control module, a PFC (power factor correction) circuit, an isolation transformer and an output synchronous rectification module;
the output end of the control module and the output end of the PFC correction circuit are connected with the input end of an isolation transformer; the output end of the isolation transformer is connected with the output synchronous rectification module;
the control module comprises an LLC control module 106 and/or a full-bridge phase-shift circuit;
the battery charging device also comprises an input rectifying module; the input end of the input rectifying module is connected with the power input, and the output end of the input rectifying module is connected with the input end of the PFC correcting circuit;
the battery charging apparatus further comprises an output switch; one end of the output switch is connected with the output synchronous rectification module, and the other end of the output switch is used as a charging output port;
the output switch comprises a relay and/or a MOSFET;
the battery charging device also comprises a sampling module, an auxiliary power supply and a main control module; the input end of the sampling module is respectively connected with the isolation transformer, the output synchronous rectification module and the output switch, and the output end of the sampling module is connected with the main control module; one end of the auxiliary power supply is connected with the PFC correction circuit, and the other end of the auxiliary power supply is connected with the main control module; the main control module is connected with the output switch;
the output charging voltage range of the battery charging device comprises 6V-72V, and the output charging current is 1-200A;
the battery charging device comprises at least one charging output voltage step;
the battery charging device comprises at least one charging output current gear.
According to the charging method of the battery charging device provided by the invention, the battery charging device comprises the following steps:
a detection charging step: when the commercial power AC is accessed, the battery charging device judges the state of the battery pack through the sampling module and outputs the judgment result to the main control module, if the battery pack is in a state to be charged, the main control module sends a signal to the LLC control module to drive the isolation transformer to output to the output synchronous rectification module, and meanwhile, the main control module controls the output switch to be switched on to charge the external battery; and if the battery pack is not in the state to be charged, the main control module is silent and closes the output switch.
Preferably, the battery charging apparatus charging method further includes:
detection and adjustment steps: in the charging process, the sampling module detects the output and the battery state of the battery charging device in real time, and adjusts the output voltage and the output current according to the set logic and the detection result.
Compared with the prior art, the invention has the following beneficial effects:
1. the battery charging device and the charging method thereof have the advantages of simple structure, high charging efficiency, good reliability, strong universality, high efficiency, energy conservation, convenient and safe use and strong operability, have a particularly good effect on the use in areas with unstable power grids, and bring great convenience and help to users;
2. the battery charging device and the charging method thereof provided by the invention can charge batteries with different capacities and different states on the premise that the batteries with different types and states have different full-charge voltages;
3. according to the battery charging device and the charging method thereof, the PFC power factor correction circuit is added, so that the wide voltage input requirement can be met, and the input harmonic interference is removed, the utilization rate of a power grid is improved, and the pollution interference to the power grid is reduced;
4. according to the battery charging device and the charging method thereof, the highest efficiency of the DC-DC part adopting the advanced soft-open LLC resonant circuit can reach more than 93%, and the conversion efficiency reaches the leading level of the industry and is improved by ten percent;
5. the battery charging device and the charging method thereof provided by the invention adopt the intelligent chip technology to judge various charging states, control corresponding circuits to work in different modes through real-time sampling operation analysis of the sampling module circuit, and reduce the loss of the whole machine by turning off the PFC and LLC main circuits in a standby mode and a maintenance detection mode.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
fig. 1 is a frame diagram of a high-efficiency conversion charger according to the present invention;
fig. 2 is a schematic diagram of a test structure according to a preferred embodiment of the present invention.
The figures show that:
input rectification module 101
Isolation transformer 102
Output synchronous rectification module 103
Output switch 104
Sampling module 105
LLC control module 106
Auxiliary power supply 107
Master control module 108
PFC correction circuit 109
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
The battery charging device provided by the invention comprises a conversion TOP framework, wherein the conversion TOP framework comprises a control module, a PFC correction circuit 109, an isolation transformer 102 and an output synchronous rectification module 103;
the output end of the control module and the output end of the PFC correction circuit 109 are both connected with the input end of the isolation transformer 102; the output end of the isolation transformer 102 is connected with an output synchronous rectification module 103;
the control module comprises an LLC control module 106 and/or a full-bridge phase-shift circuit;
the battery charging apparatus further includes an input rectification module 101; the input end of the input rectifying module 101 is connected with the power input, and the output end is connected with the input end of the PFC correction circuit 109;
the battery charging apparatus further includes an output switch 104; one end of the output switch 104 is connected with the output synchronous rectification module 103, and the other end is used as a charging output port;
the output switch 104 comprises a relay and/or a MOSFET;
the battery charging device further comprises a sampling module 105, an auxiliary power supply 107 and a main control module 108; the input end of the sampling module 105 is respectively connected with the isolation transformer 102, the output synchronous rectification module 103 and the output switch 104, and the output end of the sampling module 105 is connected with the main control module 108; one end of the auxiliary power supply 107 is connected with the PFC correction circuit 109, and the other end is connected with the main control module 108; the main control module 108 is connected with the output switch 104;
the output charging voltage range of the battery charging device comprises 6V-72V, and the output charging current is 1-200A;
the battery charging device comprises at least one charging output voltage step;
the battery charging device comprises at least one charging output current gear.
According to the charging method of the battery charging device provided by the invention, the battery charging device comprises the following steps:
a detection charging step: when the commercial power AC is accessed, the battery charging apparatus determines the state of the battery pack through the sampling module 105 and outputs the determination result to the main control module 108, if the battery pack is in a state to be charged, the main control module 108 sends a signal to the LLC control module 106 to drive the isolation transformer 102 to output to the output synchronous rectification module 103, and meanwhile, the main control module 108 controls the output switch 104 to be turned on to charge the external battery; if the battery pack is not in the state to be charged, the main control module 108 is silent and turns off the output switch 104.
The battery charging apparatus charging method further includes:
detection and adjustment steps: in the charging process, the sampling module 105 detects the output and the battery state of the battery charging device in real time, and adjusts the output voltage and the output current according to the set logic and the detection result.
Further, as shown in fig. 1, a preferred embodiment of the present invention provides a high-efficiency conversion charger, as shown in fig. 1, the circuit includes an input rectification module 101, an isolation transformer 102, an output synchronous rectification module 103, an output switch 104, a sampling module 105, an isolation driving module 106, an auxiliary power supply 107, a main control module 108, and a PFC correction circuit 109.
The high-efficiency conversion charger is detected by a main control module, if commercial power AC is connected into the charger, the state of a battery pack can be automatically judged, detection is performed by an internal chip, a calculation main control module 108 can make corresponding actions after receiving an instruction, when the battery is connected, a sampling module 105 sends a signal to the main control module 108 in real time once receiving the signal, the main control module 108 automatically sends the signal to an LLC control module 106 to drive an isolation transformer 102 to output the signal to an output synchronous rectification module 103 and an output switch 104 to charge an external battery, meanwhile, the output current is automatically judged and adjusted by real-time dynamic monitoring in the whole charging process, a reasonable charging condition of the battery is guaranteed, and the charging function of full-automatic high-efficiency conversion is achieved.
The voltage comprises 6V-72V; the charging current is 1-200A.
The output current and voltage are at least more than one.
In the preferred embodiment of the invention, the LLC control module 106, the PFC correction circuit 109, the isolation transformer 102 and the synchronous rectification module 103 form a TOP architecture for efficient conversion, and then the sampling module detects output current and voltage signals and feeds back to the main control module to analyze, calculate and control corresponding output voltage and current.
Besides high efficiency and energy conservation, the system can also monitor the health state of the battery, automatically identify environmental parameters, intelligently control the charging state and protect the charged battery.
Compared with other PFC correction circuits, the basic circuit has the same structural effect, and the difference is that the output voltage of the PFC circuit is automatically adjusted according to the output power, and the isolation transformer is always kept working at the maximum duty ratio by the voltage adjustment, so that the efficiency is kept at the highest point.
In the present application, the LLC resonant circuit can also achieve high efficiency by a phase-shifted full-bridge LLC Top circuit, but the cost is not optimized.
Furthermore, the preferred embodiment of the invention aims to provide a safe and high-conversion intelligent charger, which can charge batteries with different types and states at different full voltages and different capacities, and can increase a PFC (power factor correction) circuit, so that the wide-voltage input requirement can be met, the input harmonic interference is removed, the utilization rate of a power grid is improved, the pollution interference on the power grid is reduced, the highest efficiency of a DC-DC part adopting an advanced soft-open LLC (logical link control) resonant circuit can reach more than 93%, and the conversion efficiency reaches the leading level of the industry and is improved by ten percent.
The intelligent charging system has the advantages of high efficiency, energy conservation, convenience and safety in use, strong operability, excellent effect on the use in areas with unstable power grids, and great convenience and help for users.
In order to achieve the above purpose, the present invention provides a charger circuit with high efficiency conversion, which is composed of eight module circuits, wherein the main modules are an internal charging module, an internal sampling module and a start control module.
As shown in fig. 1, the present invention provides a high-efficiency conversion charger (as shown in fig. 1), the circuit includes an input rectifying module 101, an isolation transformer 102, an output synchronous rectifying module 103, an output switch 104, a sampling module 105, an isolation driving module 106, an auxiliary power supply 107, a main control module 108, a PFC correction circuit 109, etc., wherein the output large current mainly includes three major parts, namely, the isolation transformer 102, the output synchronous rectifying module 103, and the output switch 104.
FIG. 1 operating principle; the working condition of the circuit must ensure that the input power supply is normal, the AC input changes the alternating current into stable direct current through the 101 rectifier module to supply power to the auxiliary power supply 107 to the internal main control module 108, the PFC correction circuit 109 at the other side of the 101 rectifier module can adjust the stable direct current high voltage of the input voltage to the isolation transformer 102, the isolation transformer 102 receives the high voltage direct current to change the high voltage direct current into low voltage safety alternating current to the output synchronous rectifier module 103 and the sampling module 105, and the other end is connected with the LLC control module 106.
Once the battery is connected, the sampling module 105 receives the signal and sends the signal to the main control module 108 in real time, the main control module 108 automatically sends a signal to the LLC control module 106 to drive the isolation transformer 102 to output to the 103 output rectifier module and the output switch 104 to judge and charge the external battery, and simultaneously, the sampling module 105 and the main control module 108 dynamically monitor in real time and automatically judge and adjust the output current in the whole charging process, thereby ensuring a reasonable charging voltage and current for the battery.
The conversion efficiency of the whole circuit is effectively improved through accurate and reasonable module combination configuration, and meanwhile, the requirements of wide voltage and low harmonic wave are met.
Fig. 2 shows a summary of the test results of the preferred embodiment of the present invention.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (10)
1. A battery charging apparatus, comprising a switch TOP architecture, wherein the switch TOP architecture comprises a control module, a PFC correction circuit (109), an isolation transformer (102) and an output synchronous rectification module (103);
the output end of the control module and the output end of the PFC correction circuit (109) are connected with the input end of an isolation transformer (102); the output end of the isolation transformer (102) is connected with the output synchronous rectification module (103).
2. The battery charging apparatus of claim 1, wherein the control module comprises the LLC control module 106 and/or a full-bridge phase shift circuit.
3. The battery charging apparatus according to claim 1, further comprising an input rectifying module (101); the input end of the input rectifying module (101) is connected with the power input, and the output end of the input rectifying module is connected with the input end of the PFC correcting circuit (109).
4. The battery charging apparatus of claim 1, further comprising an output switch (104); one end of the output switch (104) is connected with the output synchronous rectification module (103), and the other end of the output switch is used as a charging output port.
5. The battery charging apparatus according to claim 4, wherein the output switch (104) comprises a relay and/or a MOSFET.
6. The battery charging apparatus according to any one of claims 1 to 4, further comprising a sampling module (105), an auxiliary power supply (107) and a main control module (108); the input end of the sampling module (105) is respectively connected with the isolation transformer (102), the output synchronous rectification module (103) and the output switch (104), and the output end of the sampling module (105) is connected with the main control module (108); one end of the auxiliary power supply (107) is connected with the PFC correction circuit (109), and the other end of the auxiliary power supply is connected with the main control module (108); the main control module (108) is connected with the output switch (104).
7. The battery charging apparatus according to any one of claims 1 to 4, wherein the output charging voltage range of the battery charging apparatus comprises 6V-72V, the output charging current is 1-200A;
the battery charging device comprises at least one charging output voltage step;
the battery charging device comprises at least one charging output current gear.
8. A battery charging apparatus, comprising a switch TOP architecture, wherein the switch TOP architecture comprises a control module, a PFC correction circuit (109), an isolation transformer (102) and an output synchronous rectification module (103);
the output end of the control module and the output end of the PFC correction circuit (109) are connected with the input end of an isolation transformer (102); the output end of the isolation transformer (102) is connected with an output synchronous rectification module (103);
the control module comprises an LLC control module 106 and/or a full-bridge phase-shift circuit;
the battery charging apparatus further comprises an input rectification module (101); the input end of the input rectifying module (101) is connected with the power input, and the output end of the input rectifying module is connected with the input end of the PFC correcting circuit (109);
the battery charging apparatus further comprises an output switch (104); one end of the output switch (104) is connected with the output synchronous rectification module (103), and the other end of the output switch is used as a charging output port;
the output switch (104) comprises a relay and/or a MOSFET;
the battery charging device also comprises a sampling module (105), an auxiliary power supply (107) and a main control module (108); the input end of the sampling module (105) is respectively connected with the isolation transformer (102), the output synchronous rectification module (103) and the output switch (104), and the output end of the sampling module (105) is connected with the main control module (108); one end of the auxiliary power supply (107) is connected with the PFC correction circuit (109), and the other end of the auxiliary power supply is connected with the main control module (108); the main control module (108) is connected with the output switch (104);
the output charging voltage range of the battery charging device comprises 6V-72V, and the output charging current is 1-200A;
the battery charging device comprises at least one charging output voltage step;
the battery charging device comprises at least one charging output current gear.
9. A method for charging a battery charging device, using the battery charging device according to any one of claims 1 to 8, comprising the steps of:
a detection charging step: when the commercial power AC is accessed, the battery charging device judges the state of the battery pack through the sampling module (105) and outputs the judgment result to the main control module (108), if the battery pack is in a state to be charged, the main control module (108) sends a signal to the LLC control module (106) to drive the isolation transformer (102) to output to the output synchronous rectification module (103), and meanwhile, the main control module (108) controls the output switch (104) to be turned on to charge the external battery; if the battery pack is not in the state to be charged, the main control module (108) is silent and the output switch (104) is closed.
10. The battery charging apparatus charging method according to claim 9, further comprising:
detection and adjustment steps: in the charging process, the sampling module (105) detects the output and the battery state of the battery charging device in real time, and adjusts the output voltage and the output current according to the set logic and the detection result.
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| CN201910907133.XA CN110601322A (en) | 2019-09-24 | 2019-09-24 | Battery charging device and charging method thereof |
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| CN201910907133.XA CN110601322A (en) | 2019-09-24 | 2019-09-24 | Battery charging device and charging method thereof |
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| CN204333985U (en) * | 2014-07-27 | 2015-05-13 | 比瑞科技(深圳)有限公司 | A kind of high-power charger with auto-breaking defencive function |
| CN207225123U (en) * | 2017-09-18 | 2018-04-13 | 铠龙东方汽车有限公司 | A kind of charging unit for portable lithium-ion-power cell |
| CN109638936A (en) * | 2019-01-23 | 2019-04-16 | 上海广为美线电源电器有限公司 | Automatic charging system, method and medium |
| CN210490524U (en) * | 2019-09-24 | 2020-05-08 | 上海广为美线电源电器有限公司 | Battery charging device |
-
2019
- 2019-09-24 CN CN201910907133.XA patent/CN110601322A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204333985U (en) * | 2014-07-27 | 2015-05-13 | 比瑞科技(深圳)有限公司 | A kind of high-power charger with auto-breaking defencive function |
| CN207225123U (en) * | 2017-09-18 | 2018-04-13 | 铠龙东方汽车有限公司 | A kind of charging unit for portable lithium-ion-power cell |
| CN109638936A (en) * | 2019-01-23 | 2019-04-16 | 上海广为美线电源电器有限公司 | Automatic charging system, method and medium |
| CN210490524U (en) * | 2019-09-24 | 2020-05-08 | 上海广为美线电源电器有限公司 | Battery charging device |
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