CN201509091U - Charging device for electric tool - Google Patents
Charging device for electric tool Download PDFInfo
- Publication number
- CN201509091U CN201509091U CN2009201672481U CN200920167248U CN201509091U CN 201509091 U CN201509091 U CN 201509091U CN 2009201672481 U CN2009201672481 U CN 2009201672481U CN 200920167248 U CN200920167248 U CN 200920167248U CN 201509091 U CN201509091 U CN 201509091U
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- charging
- battery
- circuit
- unit
- electric tool
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a charging device for an electric tool which comprises a power circuit, a PWM circuit and a charging control circuit. The charging control circuit comprises an unit for monitoring battery capacity, the charging control circuit connects with a display driving circuit, the display driving circuit connects with a plurality of devices for displaying battery capacity. The charging device for the electric tool can display multi-state in the charging process of battery, which is clear.
Description
Technical field
The utility model relates to charging technique, relates in particular to a kind of charging device that is used for electric tool.
Background technology
At present, the charging device that is used for electric tool of prior art generally all has charged state deixis and charging process controlled function, yet, these functions are all too simple, indicate as charged state, only only limit to pilot cell and be in charged state or charging completion status, the progress of reaction cell charged state particularly.
The utility model content
Technical problem to be solved in the utility model is: a kind of charging device is provided, and this device can show a plurality of stages of battery charging state intuitively to the user.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
A kind of charging device, comprise power circuit, pwm circuit, charging control circuit, it is characterized in that this charging control circuit includes a battery capacity monitor unit, described charging control circuit is connected with the described display driver circuit of display driver circuit and then is connected with a plurality of battery capacity display unit.
The beneficial effects of the utility model are:
Embodiment of the present utility model is by being provided with a plurality of battery capacity display unit, thereby shown the various states in the battery charge process, and is simple and clear.
Below in conjunction with accompanying drawing the utility model is described in further detail.
Description of drawings
Fig. 1 is the circuit structure diagram of the embodiment of charging device that provides of the utility model.
Embodiment
With reference to figure 1, this figure is the circuit structure diagram of the embodiment of charging device that provides of the utility model; As shown in the figure, present embodiment mainly includes power circuit 1, pwm circuit 2, charging control circuit 3, and this charging control circuit 3 includes a battery capacity monitor unit 31 and charging control circuit 3 and is connected with display driver circuit 4 display driver circuits 4 and then is connected with a plurality of battery capacity display unit 5.
During specific implementation, battery capacity display unit 5 can adopt LED, and LED quantity is provided with 4 for good, 25%, 50%, 75% and 100% capacity status of the corresponding battery of difference when each LED is bright.Described 4 LED lamps have shown 4 different conditions of battery in charging process simple and clearly, can make the user more easily charging process be held and control.
In addition, described charging control circuit 3 also includes battery size detecting unit 32, cell voltage monitor unit 33, charging current monitor unit 34, battery temperature monitor unit 35 and charge mode control unit 36, and described charge mode control unit 36 is connected with:
Be lower than the awakening mode charging circuit 37 of working under the first threshold state, be in the constant-current pulse pattern charging circuit 38 of working under the state between the first threshold and second threshold value, be higher than the tiny stream mold filling formula charging circuit 39 of working under second threshold status and be higher than the constant voltage mode charging circuit 30 of working under second threshold status at lithium battery voltage at cell voltage at NI-G or Ni-MH battery voltage at cell voltage, during specific implementation, described constant current mode charging circuit 38 adopts the pulse mode charging.
During specific implementation, for NI-G or Ni-MH battery, its first threshold can be set to 10.8V, and second threshold value can be the maximum shutoff voltage of battery; For lithium battery, its first threshold can be set to 15V, and second threshold value is 20.5V, after lithium battery voltage reaches 20.5V, the constant voltage mode charging circuit is started working, and drops to 100mA up to charging current, and concrete battery types and model can be detected by described battery size detecting unit.By the different phase of cell voltage in the battery charging process is adjusted charge mode, make the infringement that the charging process of battery is rationalized more, avoid improper charging to bring to battery.
During specific implementation, charge mode control unit 36 (MCU) is from the EEPROM reading of data of lithium battery, and the charge characteristic of lithium battery is set according to described data.
During specific implementation, power circuit 1 can adopt the single-end ortho-exciting topological structure, it includes input filter rectification unit 11, power conversion unit 12, output rectification filtering unit 13 and the charging control switch 14 that connects successively, and described power conversion unit 12 also is connected with an auxiliary power unit 15.
The above is a preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also are considered as protection range of the present utility model.
Claims (6)
1. charging device that is used for electric tool, comprise power circuit, pwm circuit, charging control circuit, it is characterized in that this charging control circuit includes a battery capacity monitor unit, described charging control circuit is connected with the described display driver circuit of display driver circuit and then is connected with a plurality of battery capacity display unit.
2. the charging device that is used for electric tool as claimed in claim 1, it is characterized in that, described charging control circuit also includes battery size detecting unit, cell voltage monitor unit, charging current monitor unit, battery temperature monitor unit, and the charge mode control unit, and described charge mode control unit is connected with:
Be lower than the awakening mode charging circuit of working under the first threshold state, be in the constant-current pulse pattern charging circuit of working under the state between the first threshold and second threshold value, be higher than the tiny stream mold filling formula charging circuit of working under second threshold status and be higher than the constant voltage mode charging circuit of working under second threshold status at lithium battery voltage at cell voltage at NI-G or Ni-MH battery voltage at cell voltage.
3. the charging device that is used for electric tool as claimed in claim 2 is characterized in that, when battery was NI-G or Ni-MH battery, its first threshold was 10.8V, and second threshold value is the maximum shutoff voltage of battery; When battery was lithium battery, its first threshold was 15V, and second threshold value is 20.5V.
4. the charging device that is used for electric tool as claimed in claim 1 or 2 is characterized in that, described battery capacity display unit is LED.
5. the charging device that is used for electric tool as claimed in claim 4 is characterized in that, described LED quantity is 4, respectively 25%, 50%, 75% and 100% capacity status of corresponding battery.
6. the charging device that is used for electric tool as claimed in claim 1 or 2, it is characterized in that, described power circuit is the single-end ortho-exciting topological structure, it includes input filter rectification unit, power conversion unit, output rectification filtering unit and the charging control switch that connects successively, and described power conversion unit also is connected with an auxiliary power unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201672481U CN201509091U (en) | 2009-08-03 | 2009-08-03 | Charging device for electric tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201672481U CN201509091U (en) | 2009-08-03 | 2009-08-03 | Charging device for electric tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201509091U true CN201509091U (en) | 2010-06-16 |
Family
ID=42470213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201672481U Expired - Lifetime CN201509091U (en) | 2009-08-03 | 2009-08-03 | Charging device for electric tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201509091U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103199597A (en) * | 2012-01-06 | 2013-07-10 | 鸿富锦精密工业（深圳）有限公司 | Battery charging system and battery charging method |
-
2009
- 2009-08-03 CN CN2009201672481U patent/CN201509091U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103199597A (en) * | 2012-01-06 | 2013-07-10 | 鸿富锦精密工业（深圳）有限公司 | Battery charging system and battery charging method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170321 Address after: The United Kingdom of Great Britain and Northern Ireland Northern Ireland 8 District Cardiff CF15 Reed Joyce Ge Road No. 29 Patentee after: Martin Morgan Venad Address before: Hongkong China Tsuen Wan Chai Wan Kok Street No. 35-45 Yufeng Arts crafts emporium, 7 floor room 6B Patentee before: Raton Technology Development Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100616 |
|
| CX01 | Expiry of patent term |