CN217824366U - Battery charging device - Google Patents
Battery charging device Download PDFInfo
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- CN217824366U CN217824366U CN202221730537.XU CN202221730537U CN217824366U CN 217824366 U CN217824366 U CN 217824366U CN 202221730537 U CN202221730537 U CN 202221730537U CN 217824366 U CN217824366 U CN 217824366U
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Abstract
The utility model discloses a battery charging device belongs to battery charging technical field, include: after a battery to be charged is activated, charging the battery to be charged in a low-current short-charging mode for a preset time, detecting and obtaining a float charging voltage value of the battery to be charged after the preset time is up, and if the float charging voltage value is smaller than a first voltage threshold value, judging that the battery to be charged is a nickel-metal hydride battery; and if the float charging voltage value exceeds a first voltage threshold value, charging the battery to be charged in a constant current long charging mode, closing the current after the preset voltage value is reached, detecting the real-time voltage of the battery to be charged in a no-load mode, and obtaining a second voltage value of the battery to be charged when the voltage is reduced to be unchanged. The utility model discloses a rechargeable battery is treated in interval's pulse current activation to voltage value and the current value according to gathering get into different charge mode, and confirm whether full of, realize the compatible security of charging and using of different specification batteries.
Description
Technical Field
The utility model belongs to the technical field of battery charging, a battery charging device is related to.
Background
The charging methods of different batteries are different, and therefore different types of batteries need to be provided with special battery chargers. Most of the existing battery chargers can only charge a single type of battery and cannot be compatible with batteries with different specifications, and if a user has a plurality of types of batteries, the user needs a plurality of different battery chargers. In particular, charging a wrong type of battery may cause damage to the battery or device, and even cause safety problems such as fire and explosion.
At present, chargers for 1.5V lithium batteries are prepared by factories, the chargers directly output 5V voltage and are incompatible with conventional lithium batteries and nickel-hydrogen batteries, when the conventional lithium batteries and the nickel-hydrogen batteries are placed wrongly, the lithium batteries and the nickel-hydrogen batteries are overcharged, and when the conventional lithium batteries and the nickel-hydrogen batteries are placed wrongly, the chargers or the batteries are damaged, even the batteries are exploded due to fire; if a 1.5v lithium battery is placed into a conventional lithium battery charger or a nickel metal hydride battery charger, the battery may be left overcharged or directly rejected.
SUMMERY OF THE UTILITY MODEL
The utility model provides a battery charging method and a device thereof, which aims to solve the problems in the background technology.
In order to achieve the above object, the utility model also provides a battery charging device is applied to and charges treating rechargeable battery to putting, include: the charging control system comprises an MCU control module, a charging driving circuit module, a charging switch circuit module, a voltage detection module and a current detection module, wherein the MCU control module is electrically connected with the charging driving circuit module, the charging switch circuit module, the voltage detection module and the current detection module.
Preferably, the MCU control module controls the charging driving circuit module and the charging switching circuit module to pulse each current of the battery to be charged at a preset interval time, so as to increase the voltage of the battery to be charged for activation.
Preferably, the voltage detection module is used for collecting voltage values at two ends of the battery to be charged and transmitting the voltage values to the MCU control module, the current detection module is used for collecting current values of the battery to be charged and transmitting the current values to the MCU control module, the MCU control module enters different charging modes according to the voltage values and the current values which are correspondingly collected by the voltage detection module and the current detection module, the charging modes comprise a nickel-metal hydride battery charging mode, a conventional lithium battery charging mode and a constant-voltage lithium battery charging mode, and the conventional lithium battery charging mode can be replaced by a lithium iron phosphate battery charging mode.
Preferably, the MCU control module controls the charging driving circuit module and the charging switch circuit module to charge or stop charging the battery to be charged according to different charging modes and the voltage and current values correspondingly acquired by the voltage and current detection modules.
Utility model beneficial effect for prior art:
the utility model provides a battery charging device adopts interval's pulse current activation to treat rechargeable battery, short the mode of filling with the undercurrent of time of predetermineeing, and enter into nickel-hydrogen battery charging mode according to the magnitude of voltage and the current value of gathering, long the mode of filling with the constant current, and according to the magnitude of voltage and the current value of gathering, judge conventional lithium cell charging mode or constant voltage lithium cell charging mode, and confirm whether full of, realize the compatible security of charging and using of different specification batteries.
To more clearly illustrate the structural features and functions of the present invention, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
Drawings
Fig. 1 is a schematic diagram of a first process of the battery charging method of the present invention;
fig. 2 is a first guiding diagram of the battery charging method of the present invention;
fig. 3 is a schematic view of a second process of the battery charging method of the present invention;
fig. 4 is a second guiding diagram of the battery charging method of the present invention;
fig. 5 is a schematic view of a connection structure of the battery charging apparatus of the present invention;
reference numerals are as follows:
1. an MCU control module; 2. a charging driving circuit module; 3. a charge switch circuit module; 4. a voltage detection module; 5. A current detection module; 6. and (5) a battery to be charged.
Detailed Description
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "including" and "having," and any variations thereof, in the description and claims of this application and the description of the above figures are intended to cover non-exclusive inclusions. The terms "first," "second," and the like in the description and claims of this application or in the above-described drawings are used for distinguishing between different objects and not for describing a particular order.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
At present, a lot of chargers on the market all correspond design and production according to the model of battery, and the user then does not do the same thing, think that can charge after the charger is pegged graft and just having managed, but have certain potential safety hazard in utilization, consequently, comb to current a lot of chargers and obtain different chargers and put into different batteries and produce corresponding charging result as follows:
| special charger for 1.5V lithium battery | Nickel-hydrogen and conventional lithium battery charger | |
| 1.5V lithium battery | Normal charging | Is not full of |
| Nickel-hydrogen battery | Overcharge or refusal to charge (potential safety hazard) | Normal charging |
| Conventional lithium battery | Overcharge or refusal charge (potential safety hazard) | Normal charging |
In order to achieve the above object, an embodiment of the present invention provides a battery charging device, as shown in fig. 5, for charging a placed rechargeable battery 6, including: MCU control module 1, the drive circuit module 2 that charges, charging switch circuit module 3, voltage detection module 4 and current detection module 5, MCU control module 1 and the drive circuit module 2 that charges, charging switch circuit module 3, voltage detection module 4 and current detection module 5 electric connection charge.
Further, the MCU control module 1 controls the charging driving circuit module 2 and the charging switching circuit module 3 to pulse the battery to be charged 6 at each current of a preset interval time, so that the voltage of the battery to be charged 6 rises to activate.
Further, voltage detection module 4 is used for gathering treat the magnitude of voltage at rechargeable battery 6 both ends and transmit for MCU control module 1, current detection module 5 is used for gathering treat rechargeable battery 6's current value and transmit for MCU control module 1, MCU control module 1 enters different charge mode according to magnitude of voltage, the current value that voltage detection module 4, current detection module 5 correspond the collection, charge mode includes nickel-hydrogen battery charge mode, conventional lithium battery charge mode and constant voltage lithium battery charge mode.
In some embodiments, the conventional lithium battery charging mode can be replaced by a lithium iron phosphate battery charging mode, so as to form a battery charging device comprising a nickel-metal hydride battery charging mode, a lithium iron phosphate battery charging mode and a constant voltage lithium battery charging mode.
Further, the MCU control module 1 controls the charging driving circuit module 2 and the charging switch circuit module 3 to charge or stop charging the battery 6 to be charged according to different charging modes and the voltage and current values acquired by the voltage detection module 4 and the current detection module 5.
For example, the present embodiment is used as follows: sending pulses to the battery 6 to be charged at 20 milliamperes of current every 1 second to enable the voltage at two ends of the battery to be charged to rise, so that the battery is activated, and subsequent current and voltage sampling is facilitated; the voltage detection module 4 collects voltage values of voltages at two ends of a connected battery to be charged, and the MCU control module 1 intelligently classifies the battery to be charged according to the sampled voltage values, wherein the nickel-hydrogen battery with the float charge voltage value within 2.2V is 1.2V; after long charging is carried out to 4.2V, the closing current and the idle load voltage is 1.5-1.65V, and the lithium battery is a constant voltage lithium battery with 1.5V; the voltage is 3.7V common lithium battery between 4V-4.2V, the MCU control module 1 controls the charging drive circuit module 2 and the charging switch circuit module 3 to charge or stop charging the battery 6 to be charged according to different charging modes and real-time acquired voltage values and current values, wherein the floating charging voltage refers to the battery voltage when current is charged, and the no-load voltage refers to the battery voltage when no current is charged.
In addition, in the charging embodiment, if a conventional lithium battery is defined as a lithium iron phosphate battery, the voltage between 2.2V and 3.6V can be judged as a 3.2V lithium iron phosphate battery, and the lithium iron phosphate battery replaces the conventional lithium battery, and can be in different charging modes with a 1.2V nickel-metal hydride battery and a 1.5V constant voltage battery.
In addition, in order to achieve the above object, the present invention further provides a battery charging method, as shown in fig. 1 and 2, applied to the battery charging apparatus as described above, the method including:
s1: and adopting each current of preset interval time to pulse the battery to be charged so as to enable the voltage of the battery to be charged to rise and activate.
For example, the preset interval time is set to 1 second, one current is 20 milliamperes, and the current flows from one end of the battery to be charged to the other end, so that a current pulse operation mode is formed once and again, and the voltage value at the two ends of the battery to be charged is continuously increased to realize activation.
S2: after a battery to be charged is activated, the battery to be charged is charged in a low-current short-charging mode within preset time, after the preset time is reached, a float charging voltage value of the battery to be charged is detected and obtained, and if the float charging voltage value is smaller than a first voltage threshold value, the battery to be charged is judged to be a nickel-metal hydride battery.
For example, the preset time is set to 30 seconds, the low-current short-charge mode is to charge the battery to be charged in 30 seconds by using a low current of 20 milliamperes, the MCU control module controls the charging switch circuit module to be turned off when 30 seconds arrive, and detects that the float charge voltage value at the two ends of the battery to be charged is within 2.2V, so as to identify that the battery to be charged is a 1.2V nickel-hydrogen battery.
Further, the battery to be charged is a nickel-metal hydride battery, enters a nickel-metal hydride battery charging mode, and when the current charging voltage of the nickel-metal hydride battery reaches a first nickel-metal hydride voltage value (for example, a negative voltage or an inflection point voltage occurs), it is determined that the voltage of the battery to be charged is full.
When the current charging voltage of the nickel-metal hydride battery reaches a second nickel-metal hydride voltage value (for example, 1.47V or 1.48V), judging that the voltage of the battery to be charged is full after a preset delay time (for example, 20 minutes of delay), wherein the second nickel-metal hydride voltage value is used for safely judging and supplementing when the first nickel-metal hydride voltage value does not appear, the passivated old battery can be safely judged to be full, the voltage is judged to be full between 1.6V and 2.2V, and the second nickel-metal hydride voltage value is larger than the first nickel-metal hydride voltage value.
S3: and if the float charging voltage value exceeds a first voltage threshold value, charging the battery to be charged in a constant current long charging mode, closing the current after the preset voltage value is reached, detecting the real-time voltage of the battery to be charged in a no-load mode, and obtaining a second voltage value of the battery to be charged when the voltage is reduced to be stable.
In this embodiment, the first voltage threshold is set to 2.2V, the constant current long charge is to charge the battery to be charged by adopting a constant current milliamp, when the voltage at the two ends of the battery to be charged reaches the full-charge voltage of the common battery, the current is automatically turned off, the voltage at the two ends of the battery to be charged is no-load to balance, and the actual voltage at the two ends of the battery to be charged is obtained through the voltage detection module as the second voltage value.
S311: and if the second voltage value is within the first preset voltage range value, judging that the battery to be charged is a conventional lithium battery.
For example, the first preset voltage range is set to be 4.0V-4.2V, and the batteries to be charged are all conventional lithium batteries. Specifically, when the battery to be charged is a conventional lithium battery, a conventional lithium battery charging mode is entered, a constant-current and constant-voltage down-flow charging mode is adopted, and if the current charging voltage of the conventional lithium battery reaches a conventional lithium voltage value (for example, the voltage of a 3.7V lithium battery is 4.2V), it is determined that the voltage of the conventional lithium battery is full (for example, 3.6V or 3.7V).
S312: and if the second voltage value is within a second preset voltage range value, judging that the battery to be charged is a constant-voltage lithium battery.
For example, if the second preset voltage range is set to 1.5V-1.7V with the no-load voltage, it is determined that the battery to be charged is a constant voltage lithium battery.
Specifically, when the rechargeable battery is a constant-voltage lithium battery, the rechargeable battery enters a constant-voltage lithium battery charging mode, and if the rechargeable battery is internally provided in advance, when the charging current in the constant-voltage lithium battery is automatically closed, the voltage of the constant-voltage lithium battery is fully charged.
In conclusion, the utility model provides a battery charging method and device adopts the pulse current activation of interval to wait rechargeable battery to the undercurrent of preset time short-term mode of charging, and enter into nickel-hydrogen battery charging mode according to the magnitude of voltage and the current value of gathering, with the long mode of charging of constant current, and according to magnitude of voltage and the current value of gathering, judge conventional lithium cell charging mode or constant voltage lithium cell charging mode, and confirm whether full of, realize the compatible security of charging and using of different specification batteries.
Referring to fig. 3 and 4, the above battery charging method of the present invention further includes step S313: the step S311 is replaced by the step S311, that is, the conventional lithium battery judgment in the step S311 may also be replaced by the step S313 of judging the lithium iron phosphate battery, specifically, if the second voltage value is within a third preset voltage range value, it is judged that the battery to be charged is the lithium iron phosphate battery, and the third preset voltage range value is included in the first preset voltage range value.
For example, the second voltage value is within a third preset voltage range value of 2.2V-3.6V, and if the voltage is between 2.2V-3.6V, it can be judged as a 3.2V lithium iron phosphate battery. Specifically, when the battery to be charged is a lithium iron phosphate battery, a lithium iron phosphate battery charging mode is entered, a constant-current-followed-by-constant-voltage falling-current charging mode is adopted, and if the current charging voltage of the lithium iron phosphate battery reaches a lithium iron phosphate voltage value (for example, the lithium iron phosphate voltage is 3.6V), it is determined that the lithium iron phosphate battery is fully charged (for example, the lithium iron phosphate battery is fully charged with 3.2V).
In addition, in the charging embodiment, if a conventional lithium battery is defined as a lithium iron phosphate battery, the voltage between 2.2V and 3.6V can be judged as a 3.2V lithium iron phosphate battery, and the lithium iron phosphate battery replaces the conventional lithium battery, and can be in different charging modes with a 1.2V nickel-metal hydride battery and a 1.5V constant voltage battery.
In conclusion, the utility model provides a battery charging method and device adopts interval's pulse current activation to wait rechargeable battery, short the mode of charging with the undercurrent of default time, and enter into nickel-hydrogen battery charging mode according to the magnitude of voltage and the current value of gathering, long the mode of charging with the constant current, and according to magnitude of voltage and the current value of gathering, judge lithium iron phosphate battery charging mode or constant voltage lithium battery charging mode, and confirm whether full of, realize the compatible security of charging and using of different specification batteries.
The technical principle of the present invention has been described above with reference to specific embodiments, which are only preferred embodiments of the present invention. Utility model's protection scope not only limits in above-mentioned embodiment, and the technical scheme that all belongs to under the utility model thinking all belongs to utility model's protection scope. Those skilled in the art will be able to conceive of other embodiments of the invention without any inventive step, which are intended to fall within the scope of the invention.
Claims (4)
1. The utility model provides a battery charging device, is applied to and charges the rechargeable battery who puts, its characterized in that includes: the charging control system comprises an MCU control module, a charging driving circuit module, a charging switch circuit module, a voltage detection module and a current detection module, wherein the MCU control module is electrically connected with the charging driving circuit module, the charging switch circuit module, the voltage detection module and the current detection module.
2. The battery charging device according to claim 1, wherein the MCU control module is activated by controlling the charging driving circuit module and the charging switching circuit module to pulse each current of the battery to be charged at a preset interval time, so as to raise the voltage of the battery to be charged.
3. The battery charging device according to claim 2, wherein the voltage detection module is configured to collect voltage values at two ends of the battery to be charged and transmit the voltage values to the MCU control module, the current detection module is configured to collect current values of the battery to be charged and transmit the current values to the MCU control module, the MCU control module enters different charging modes according to the voltage values and the current values collected by the voltage detection module and the current detection module, the charging modes include a nickel-metal hydride battery charging mode, a conventional lithium battery charging mode, and a constant voltage lithium battery charging mode, and the conventional lithium battery charging mode can be replaced by a lithium iron phosphate battery charging mode.
4. The battery charging device according to claim 3, wherein the MCU control module controls the charging driving circuit module and the charging switch circuit module to charge or stop charging the battery to be charged according to different charging modes and the voltage value and the current value correspondingly acquired by the voltage detection module and the current detection module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221730537.XU CN217824366U (en) | 2022-07-06 | 2022-07-06 | Battery charging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221730537.XU CN217824366U (en) | 2022-07-06 | 2022-07-06 | Battery charging device |
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| Publication Number | Publication Date |
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| CN217824366U true CN217824366U (en) | 2022-11-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202221730537.XU Active CN217824366U (en) | 2022-07-06 | 2022-07-06 | Battery charging device |
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| CN (1) | CN217824366U (en) |
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- 2022-07-06 CN CN202221730537.XU patent/CN217824366U/en active Active
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