CN2133983Y - Overcharge alarm charger for nickel-cadmium battery - Google Patents
Overcharge alarm charger for nickel-cadmium battery Download PDFInfo
- Publication number
- CN2133983Y CN2133983Y CN 92230569 CN92230569U CN2133983Y CN 2133983 Y CN2133983 Y CN 2133983Y CN 92230569 CN92230569 CN 92230569 CN 92230569 U CN92230569 U CN 92230569U CN 2133983 Y CN2133983 Y CN 2133983Y
- Authority
- CN
- China
- Prior art keywords
- nickel
- battery
- speed switch
- cadmium battery
- integrated circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
An automatic overcharge alarm charger for Ni-Cd battery. The voltage transformation rectifying circuit converts 220V alternating current into direct current low voltage, then the relay charges the nickel-cadmium battery, and simultaneously supplies power to the high-speed switch integrated circuit chip, when the nickel-cadmium battery is overcharged, a feedback control signal is output to the high-speed switch integrated circuit chip to enable the high-speed switch integrated circuit chip to be conducted, direct current low voltage is provided for the relay and the audible and visual alarm circuit, and the audible and visual alarm circuit sends out audible and visual alarm signals. The battery can be prevented from being damaged due to overcharge because of the sending of the overcharge alarm signal, and the battery has simple structure and low cost.
Description
The utility model relates to a device which can charge nickel-cadmium batteries and automatically send overcharge audible and visual alarm signals.
As is known to all, a nickel-cadmium battery can be charged and discharged for many times and used repeatedly, and has the advantages of small internal resistance, high-current discharge, relatively stable voltage in the discharge process and the like, so that the zinc-manganese battery cannot be compared with the zinc-manganese battery, and is widely applied.
The nickel-cadmium battery can be charged and discharged for more than 800 times under normal conditions, and is very economical to use in household appliances. The charger sold in the current market has the same and different structure and single function, the typical structure is that 220V alternating current is changed into direct current low voltage through a direct current power supply circuit to charge the nickel-cadmium battery, the charging time is different from 3 hours to 16 hours, the current charger only has the charging indication and does not have sufficient electric signals, whether the nickel-cadmium battery is sufficient or not can be roughly estimated, namely, a user can only control the electrifying time by experience, if the power supply is not timely cut off due to negligence, the overcharge condition can happen, the battery is overheated, the service life of the battery is shortened, and explosion can happen in serious cases.
The utility model aims to provide a nickel-cadmium battery charger which can automatically display immediately after being fully charged so as to overcome the defects of the prior nickel-cadmium battery charger.
Therefore, the utility model adopts the following technical scheme: it is composed of a voltage transformation rectifying circuit 1 and a high-speed switch integrated circuit chip IC 1 A relay J and an acousto-optic alarm circuit 2. The voltage transformation rectifying circuit 1 converts 220V alternating current into direct current low voltage, then charges the nickel-cadmium battery E and simultaneously switches the nickel-cadmium battery E to a high-speed switch integrated circuit chip IC 1 Supplying power, when the nickel-cadmium battery E is overcharged, E immediately outputs a feedback control signal to the high-speed switch integrated circuit chip IC 1 Make it conductive, IC 1 After the switch-on state, the DC low voltage is provided to the relay J and the acousto-optic alarm circuit 2, at the moment, the acousto-optic alarm circuit 2And sending an audible and visual alarm signal of overcharge.
Bridge rectifier circuit D in transformer rectifier circuit 1 1 ～D 4 Primary coil L 1 Two input ends are respectively connected with two output ends of a 220V alternating current power supply, and a secondary coil L of the B 2 Through a current limiting resistor R 1 Normally closed contact J of relay 1－1 Charging the nickel-cadmium battery E and simultaneously switching the high-speed switch IC 1 And (5) supplying power. Music IC in the acousto-optic alarm circuit 2 2 Respectively connected with high-speed switch integrated circuit chip IC 1 Relay J, sounding sheet F and LED 1 An associated capacitor C 1 Connected in parallel across the J coil.
The working principle of the present invention is explained with reference to fig. 2.
After the power is switched on, 220V alternating current is transformed by a transformer B,secondary winding L of B 2 The output 6V alternating voltage passes through a bridge rectifier circuit D 1 ～D 4 Rectifying and passing through a current limiting resistor R 1 After current limiting, the current passes through a normally closed contact J of the relay 1－1 The nickel cadmium battery E is charged. When the voltage at two ends of the nickel-cadmium battery E reaches the threshold value of 2.8V, the resistance R is measured 2 Make high-speed switch integrated circuit chip IC 1 Conducting, relay J and music IC 2 When the power is supplied, the J normally closed contact acts to cut off the charging circuit. At the moment, the sound-emitting sheet F emits a continuous alarm signal and drives the red light-emitting diode LED 1 Continuously flashing, green light emitting diode LED 2 Extinguished, thereby informing the person that the nickel-cadmium battery E is fully charged.
Capacitor C 1 The working stability of the relay J can be improved; the microswitch K is used for recharging and resetting.
The utility model has the advantages of that:
1. when the nickel-cadmium battery E is fully charged, the threshold value (the terminal voltage value specified by manufacturer after charging is about 1.4V generally) is used for controlling the high-speed switch integrated circuit chip IC 1 And related components, to cut off the charging power supply, thereby preventing the occurrence of a battery overcharge condition.
2. After the charger charges the nickel-cadmium battery E, the power supply can be automatically cut off, and meanwhile, an audible and visual alarm signal is sent out to remind a user of paying attention. Therefore, a user does not need to observe the battery at any time during charging, convenience is provided for the user, and particularly, the situation that the nickel-cadmium battery E is damaged due to overcharge forgotten in night and daily busy occasions is avoided.
3. By means of current-limiting measures, the charging current of the NiCd battery E is controlled to be not greater than the rated current, e.g. GNYG0.5 type 5 ＃ The charging current of the battery is not more than 50mA.
4. The structure is simple, and the cost is low.
Fig. 1 is a block diagram of the present invention.
Fig. 2 is an electrical schematic diagram of the present invention.
Example (b):
IC 1 ：TWH8778、IC 2 : k-414; the type F of the sounding sheet is HTD;
D 1 ～D 4 are all 2CP8 diodes;
R 1 、R 2 the resistance values are respectively 6.2 omega and 51K omega;
C 1 100 muf/10V is adopted;
k is a micro switch.
Claims (3)
1. An overcharge alarm charger for Ni-Cd battery is composed of voltage transformer rectifier circuit 1 and high-speed switch IC chip 1 The transformer rectifier circuit 1 converts 220V alternating current into direct current low voltage and then charges a nickel-cadmium battery E, and meanwhile, the nickel-cadmium battery charges a high-speed switch integrated circuit chip IC 1 Supplying power, when the nickel-cadmium battery E is overcharged, E immediately outputs a feedback control signal to the high-speed switch integrated circuit chip IC 1 Make it conductive, IC 1 After the relay J and the acousto-optic alarm circuit 2 are switched on, direct current low voltage is provided, and at the moment, the acousto-optic alarm circuit 2 sends an over-charge acousto-optic alarm signal.
2. The overcharge alarm charger for NiCd battery according to claim 1, wherein said bridge rectifier circuit D in transformer rectifier circuit 1 1 ～D 4 Primary coil L 1 Two input ends are respectively connected with two output ends of a 220V alternating current power supply, and a secondary coil L of the B 2 Through a current limiting resistor R 1 Normally closed contact J of relay 1－1 Charging the nickel-cadmium battery E and simultaneously switching the high-speed switch IC 1 And (5) supplying power.
3. Nickel cadmium according to claim 1The battery overcharge alarm charger is characterized in that a music integrated circuit chip IC in the acousto-optic alarm circuit 2 2 Integrated circuit IC for respectively connecting with high-speed switch 1 Relay J, sounding sheet F and LED 1 An associated capacitor C 1 And are connected in parallel at two ends of the J coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92230569 CN2133983Y (en) | 1992-08-13 | 1992-08-13 | Overcharge alarm charger for nickel-cadmium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92230569 CN2133983Y (en) | 1992-08-13 | 1992-08-13 | Overcharge alarm charger for nickel-cadmium battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2133983Y true CN2133983Y (en) | 1993-05-19 |
Family
ID=33773653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92230569 Expired - Fee Related CN2133983Y (en) | 1992-08-13 | 1992-08-13 | Overcharge alarm charger for nickel-cadmium battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2133983Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106655424A (en) * | 2016-12-31 | 2017-05-10 | 黎翠和 | Charger of lithium battery |
| CN106655425A (en) * | 2016-12-31 | 2017-05-10 | 黎翠和 | Simple nickel-cadmium battery charger |
| CN106787044A (en) * | 2016-12-20 | 2017-05-31 | 黎翠和 | A kind of easy mobile phone, the charger of flash-light battery |
| WO2018082339A1 (en) * | 2016-11-03 | 2018-05-11 | 宁德时代新能源科技股份有限公司 | Detection method and device |
-
1992
- 1992-08-13 CN CN 92230569 patent/CN2133983Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018082339A1 (en) * | 2016-11-03 | 2018-05-11 | 宁德时代新能源科技股份有限公司 | Detection method and device |
| CN106787044A (en) * | 2016-12-20 | 2017-05-31 | 黎翠和 | A kind of easy mobile phone, the charger of flash-light battery |
| CN106655424A (en) * | 2016-12-31 | 2017-05-10 | 黎翠和 | Charger of lithium battery |
| CN106655425A (en) * | 2016-12-31 | 2017-05-10 | 黎翠和 | Simple nickel-cadmium battery charger |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |