CN202633983U - Control device for preventing nickel-hydrogen battery overdischarge - Google Patents
Control device for preventing nickel-hydrogen battery overdischarge Download PDFInfo
- Publication number
- CN202633983U CN202633983U CN 201220180491 CN201220180491U CN202633983U CN 202633983 U CN202633983 U CN 202633983U CN 201220180491 CN201220180491 CN 201220180491 CN 201220180491 U CN201220180491 U CN 201220180491U CN 202633983 U CN202633983 U CN 202633983U
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- battery
- control device
- voltage
- nickel
- hydrogen battery
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a control device for preventing nickel-hydrogen battery overdischarge. The control device for preventing nickel-hydrogen battery overdischarge comprises a first resistor (25) and a second resistor (26), wherein the first resistor (25) and the second resistor (26) carry out voltage-dividing on the power supply voltage of a nickel-hydrogen battery (10), a detection module (22) which detects divided voltage put in from the first resistor (25) and the second resistor (26) and outputs sampling voltage, a comparison module (23) which receives the sampling voltage output by the detection module (22), compares the sampling voltage output by the detection module (22) with predetermined final discharging voltage and outputs a control signal, a control unit which receives the control signal output by the comparison module (23) and controls the cut-off and breakover of the nickel-hydrogen battery (10) and a load (30) according to the control signal. The control device for preventing nickel-hydrogen battery overdischarge detects the power supply voltage of the nickel-hydrogen battery in real time, judges whether the nickel-hydrogen battery overdischarges, and promptly cuts off overdischarge to protect the nickel-hydrogen battery. An LED displays control state, whish allows a user to strikingly know the power supply state of the nickel-hydrogen battery.
Description
Technical field
The utility model relates to the battery technology field, relates in particular to a kind of control device that prevents the Ni-MH battery overdischarge.
Background technology
Ni-MH battery is a kind of novel green battery that grows up nineteen nineties, has high-energy, long-life, characteristics such as pollution-free, thereby becomes one of high-tech product that competitively develops countries in the world.Ni-MH battery NiMH anode panel material is NiOOH, and the negative plate material is a hydrogen adsorbing alloy.Electrolyte is usually with 30% the KOH aqueous solution, and adding minor N iOH.Barrier film adopts porous vinylon nonwoven fabrics or nylon nonwoven fabrics etc.
As everyone knows, in the Ni-MH battery use, the capacity that Ni-MH battery is emitted accounts for the percentage of its rated capacity; Become depth of discharge (Depth of discharge, DOD), there is very dark relation in the charging life-span of the height of depth of discharge and Ni-MH battery; When the depth of discharge of Ni-MH battery dark more; Its charging life-span is just short more, therefore, should avoid deep discharge in use as far as possible.
The capacity of battery, nominal voltage, internal resistance, final discharging voltage and end of charge voltage are five major parameters of Ni-MH battery, wherein, and the minimum voltage that final discharging voltage allows when being meant the Ni-MH battery discharge.If Ni-MH battery continued discharge after voltage was lower than final discharging voltage, the Ni-MH battery voltage can descend rapidly, forms deep discharge, and like this, the product that forms on the pole plate just is difficult for recovering when charging normal again, thereby influences the life-span of battery.
Ni-MH battery has been put the electric weight of internal reservoir, after voltage reaches certain value (final discharging voltage), continues discharge and will cause overdischarge.Generally speaking, the overdischarge meeting raises inner pressure of battery, and both positive and negative polarity active material invertibity is damaged, even charging also can only partly recover, capacity also has obvious decay.
The utility model content
The technical problem that the utility model will solve is, to the above-mentioned defective of prior art, a kind of device that prevents the Ni-MH battery overdischarge is provided.
The utility model solves the technical scheme that its technical problem adopted:
A kind of control device that prevents the Ni-MH battery overdischarge is provided; Comprise and be connected between Ni-MH battery output and the ground first resistance and second resistance that the Ni-MH battery supply power voltage is carried out dividing potential drop; Detection is from dividing potential drop that inserts between first resistance and second resistance and the detection module of exporting sampling voltage; Receive the sampling voltage of detection module output, relatively and export the comparison module of control signal, receive the control signal of comparison module output, according to the control unit of control signal control Ni-MH battery and load cut-out and conducting with the sampling voltage of detection module output and preset final discharging voltage.
Preferably, said control signal comprises Continuity signal and shutoff signal; Continuity signal is the signal that the sampling voltage of detection module output produces during greater than final discharging voltage; Shutoff signal is the signal that the sampling voltage of detection module output produces when being less than or equal to final discharging voltage.
Preferably, said final discharging voltage is 0.9V, or the voltage of setting according to the Ni-MH battery discharge rate.
The utility model prevents the control device of Ni-MH battery overdischarge, also comprises the LED of the indicative control unit state of a control that links to each other with control unit.
Preferably, said control device is embedded in the Ni-MH battery.
Preferably, said control device is embedded in the load.
The technical scheme of embodiment of the present invention; Has following beneficial effect: the sampling voltage of obtaining Ni-MH battery through detection module; Detect in real time the supply power voltage of Ni-MH battery, and sampling voltage and final discharging voltage are compared, judge whether overdischarge of Ni-MH battery; And in time cut off overdischarge, protect Ni-MH battery; The LED display control state lets the eye-catching understanding Ni-MH battery of user power supply state.
Description of drawings
To combine accompanying drawing and embodiment that the utility model is described further below, in the accompanying drawing:
Fig. 1 is the sketch map that the utility model prevents control device first embodiment of Ni-MH battery overdischarge;
Fig. 2 is the sketch map that the utility model prevents control device second embodiment of Ni-MH battery overdischarge.
Embodiment
For the purpose, technical scheme and the advantage that make the utility model is clearer, below in conjunction with accompanying drawing and embodiment, to the utility model further explain.
The utility model prevents control device first embodiment of Ni-MH battery overdischarge; As shown in Figure 1; Prevent the control device of Ni-MH battery overdischarge; Comprise and be connected between Ni-MH battery 10 outputs and the ground first resistance 25 and second resistance 26 that Ni-MH battery 10 supply power voltages is carried out dividing potential drop; Detection is from the dividing potential drop of first resistance 25 and 26 accesses of second resistance and export the detection module 22 of sampling voltage; Receive the sampling voltage of detection module 22 outputs, relatively and export the comparison module 23 of control signal with the sampling voltage of detection module 22 outputs and preset final discharging voltage, receive comparison module 23 outputs control signal, cut off the control unit 21 with conducting according to control signal control Ni-MH battery 10 and load 30.
Wherein, control signal comprises Continuity signal and shutoff signal; Continuity signal is the signal that the sampling voltage of detection module 22 output produces during greater than final discharging voltage; Shutoff signal is the signal that the sampling voltage of detection module 22 output produces when being less than or equal to final discharging voltage.
Final discharging voltage is meant the minimum voltage that Ni-MH battery when discharge allows, and the final discharging voltage of Ni-MH battery is 0.9V, or sets according to the different discharge rate of Ni-MH battery, like 1V etc.
The utility model prevents control device second embodiment of Ni-MH battery overdischarge, and is as shown in Figure 2, prevents the control device of Ni-MH battery overdischarge, also comprises the LED 24 of indicative control unit 21 state of a controls that link to each other with control unit 21; When control unit 21 cut off the path of Ni-MH batteries and 30 of loads, LED24 showed the red light that glimmers; When the path of control unit 21 conducting Ni-MH batteries and load 30, LED 24 shows green lights, through the lamp of different colours, has indicated the power supply state of Ni-MH battery very significantly.
In the present embodiment, all the other situation and the utility model prevent that first embodiment of control device of Ni-MH battery overdischarge is identical, repeat no more at this.
The control device 20 of the utility model can be embedded in the Ni-MH battery 10, and Ni-MH battery 10 is controlled automatically, and it has been carried out better protection, and through the power supply state that LED 24 shows Ni-MH battery, makes the use of Ni-MH battery 10 convenient.
The control device 20 of the utility model; Can be embedded in the load 30, be electric automobile, electric bicycle, mobile phone, mine lamp etc. like load, through control device 20 being embedded in these loads 30; The convenient power supply state of understanding Ni-MH battery makes the use of load 30 convenient controlled.
In addition, the utility model is described through embodiment, but the utility model is not limited to embodiment.Those skilled in the art know, not breaking away under the scope situation of the utility model, can carry out various changes.
Claims (6)
1. control device that prevents the Ni-MH battery overdischarge; It is characterized in that; Comprise and be connected between Ni-MH battery (10) output and the ground first resistance (25) and second resistance (26) that Ni-MH battery (10) supply power voltage is carried out dividing potential drop; Detection is from dividing potential drop that inserts between said first resistance (25) and second resistance (26) and the detection module (22) of exporting sampling voltage; Receive the sampling voltage of said detection module (22) output, relatively and export the comparison module (23) of control signal with the sampling voltage of said detection module (22) output and preset final discharging voltage, receive said comparison module (23) output control signal, cut off with load (30) and the control unit (21) of conducting according to said control signal control Ni-MH battery (10).
2. the control device that prevents the Ni-MH battery overdischarge according to claim 1 is characterized in that said control signal comprises Continuity signal and shutoff signal; Said Continuity signal is the signal that the sampling voltage of said detection module (22) output produces during greater than said final discharging voltage; Said shutoff signal is the signal that the sampling voltage of said detection module (22) output produces when being less than or equal to said final discharging voltage.
3. the control device that prevents the Ni-MH battery overdischarge according to claim 2 is characterized in that, said final discharging voltage is 0.9V, or the voltage of setting according to the discharge rate of said Ni-MH battery (10).
4. the control device that prevents the Ni-MH battery overdischarge according to claim 1 is characterized in that, said control device (20) also comprises linking to each other with said control unit (21) and shows the LED (24) of said control unit (21) state of a control.
5. the control device that prevents the Ni-MH battery overdischarge according to claim 1 is characterized in that, said control device (20) is embedded in the said Ni-MH battery (10).
6. the control device that prevents the Ni-MH battery overdischarge according to claim 1 is characterized in that, said control device (20) is embedded in the said load (30).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220180491 CN202633983U (en) | 2012-04-25 | 2012-04-25 | Control device for preventing nickel-hydrogen battery overdischarge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220180491 CN202633983U (en) | 2012-04-25 | 2012-04-25 | Control device for preventing nickel-hydrogen battery overdischarge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202633983U true CN202633983U (en) | 2012-12-26 |
Family
ID=47387129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220180491 Expired - Fee Related CN202633983U (en) | 2012-04-25 | 2012-04-25 | Control device for preventing nickel-hydrogen battery overdischarge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202633983U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104967324A (en) * | 2015-06-21 | 2015-10-07 | 黄月华 | Single Ni-MH battery 9V DC step-up device |
| CN110239464A (en) * | 2019-06-18 | 2019-09-17 | 中国煤炭科工集团太原研究院有限公司 | A kind of underground coal mine explosion-proof vehicle explosion isolation type low-voltage standby power supply device |
-
2012
- 2012-04-25 CN CN 201220180491 patent/CN202633983U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104967324A (en) * | 2015-06-21 | 2015-10-07 | 黄月华 | Single Ni-MH battery 9V DC step-up device |
| CN110239464A (en) * | 2019-06-18 | 2019-09-17 | 中国煤炭科工集团太原研究院有限公司 | A kind of underground coal mine explosion-proof vehicle explosion isolation type low-voltage standby power supply device |
| CN110239464B (en) * | 2019-06-18 | 2022-10-21 | 中国煤炭科工集团太原研究院有限公司 | Explosion-proof type low-voltage standby power supply device for coal mine underground explosion-proof vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121226 Termination date: 20130425 |