CN201113410Y - Electric power driven car battery charging protector - Google Patents
Electric power driven car battery charging protector Download PDFInfo
- Publication number
- CN201113410Y CN201113410Y CNU2007201470404U CN200720147040U CN201113410Y CN 201113410 Y CN201113410 Y CN 201113410Y CN U2007201470404 U CNU2007201470404 U CN U2007201470404U CN 200720147040 U CN200720147040 U CN 200720147040U CN 201113410 Y CN201113410 Y CN 201113410Y
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Abstract
The utility model provides an electric motor car storage battery charging protector. One path of an external charger provides the working power supply of 5V for an MCU (4) by a voltage stabilizing circuit (3) to facilitate the MCU (4) to be in the working state and the other path of the external charger sends to a charging control circuit (2) by an input interface (1). A voltage detecting circuit (5) detects a charging voltage continuously and sends the data to the MCU (4); a current detecting circuit (6) detects the charging current continuously and sends the data to the MCU (4); a temperature sensor (7) collects the environmental temperature within the ten seconds after the power turn-on and starts to detect the temperature variation data of the storage battery after 10 seconds as well as detects continuously and sends the data to the MCU (4); the MCU (4) performs the A/D conversion of the detected voltage data, the current data and the temperature data, selects the optimal charging parameters preset by the software, adjusts the charging control circuit (2) in real time and ensures that the voltage and the charging current transported to an output interface (8) are up to the optical parameters.
Description
Technical field
The utility model relates to a kind of electromobile battery charge protection device, particularly a kind of electromobile battery charge protection apparatus with auto thermal compensation.
Background technology
Electric motor car because of easy to use, expense is cheap, safety and environmental protection, obtain very soon rapidly popularizing.The most of at present valve-controlled type maintenance-free lead-acid batteries (2 above storage battery polyphones use) that adopts of electric motor car is as power, when battery discharge recycles after by the charger charging behind the cut-ff voltage, use common charger charging, if charging voltage is too low, battery is not fully filled electricity, and battery can cause losing efficacy because of polar plate sulfation; If charging voltage is too high, not only make the water in the electrolyte be electrolyzed to produce hydrogen and oxygen when charging current is excessive, and hydrogen can not be reduced into water, so storage battery can be scrapped because of dehydration or because of the too high permanent failure of charging temperature again, therefore, the quality of charger directly influences the useful life of electromobile battery.Because the characteristic voltage of electromobile battery has 1 ℃ of the every rising of temperature, single lattice cell voltage that is to say that with decline 4mV the voltage of lead-acid battery has negative temperature coefficient, and its value is :-4mV/ ℃.Because the charger of the present most of electric motor car adapteds of China, it all is common charger, this class charger, because falling behind relatively or be subjected to cost, manufacturing technology restricts, determined it not supervise charging process most effectively according to the variations in temperature of environment and storage battery, so also bring certain infringement can for the useful life of electromobile battery, the basic reason place why Here it is can shorten at present the useful life of electromobile battery with regard to keeping away unavoidably.
The utility model content
At the problems referred to above, the utility model is to provide a kind of electromobile battery charging protector, and can solve existing common charger can not prolong the useful life of electromobile battery effectively in different temperatures environment control optimal charge parameter.
The technical scheme that the utility model adopted is:
A kind of electromobile battery charging protector; comprise aluminum hull (0); power input interface (1); power output interface (8) and temperature sensor (7); it is characterized in that: the power input interface (1) that also has the aluminum hull outside; power output interface (8) is connected with the inner wiring board of temperature sensor (7) and aluminum hull (0); wiring board is by MCU (4); power supply stabilization circuit (3); charging control circuit (2); voltage detecting circuit (5); current detection circuit circuit such as (6) is formed; environment and electromobile battery (9) temperature rise when MCU (4) detects the collection charging by temperature sensor (7); set charge parameter, and adjust charge parameter in real time according to the data of voltage detecting and current detecting collection.
The purpose of this utility model can also reach by following measure: temperature sensor (7) is close on the shell of storage battery (9), be used for detecting ambient temperature and storage battery (9) temperature rise that detects charging process when beginning to charge, when storage battery (9) temperature rise surpasses going up in limited time of being provided with, MCU (4) in real time control reduces charging current, avoids storage battery (9) temperature rise too high and damage.
The utility model has following advantage compared to existing technology: by charging voltage, charging current and the variations in temperature of real-time detection batteries, and the optimal parameter of control charging in real time, guarantee that batteries can not overcharge, owe to fill or the too high casing deformation problem of temperature, prolong batteries useful life, prolong scrapping the cycle of batteries, be user's cost saving not only, but also have environment protecting.
Description of drawings
Fig. 1 is the utility model block diagram
Fig. 2 is a schematic diagram of the present utility model
Fig. 3 is an outside drawing of the present utility model
Fig. 4 is an embodiment schematic diagram of the present utility model
Embodiment
(embodiment) is described in more detail the utility model below in conjunction with accompanying drawing.
As shown in Figure 1, the external charge device is by input interface (1), and the voltage stabilizing circuit (3) of leading up to provides 5V working power for microprocessor MCU (4), makes MCU (4) enter operating state, and charging control circuit (2) is delivered on another road.Voltage detecting circuit (5) constantly detects charging voltage, and give MCU (4) with data, current detection circuit (6) constantly detects the electric current of charging, and give MCU (4) with data, the preceding 10s time of temperature sensor (7) after energising, be responsible for gathering ambient temperature, 10s begins to detect the variations in temperature data of storage battery after the time, and constantly detect, send data to MCU (4).MCU (4) carries out the A/D conversion to detected voltage data, current data and temperature data, the optimal charge parameter of selecting software to preset, and adjust charging control circuit (2) in real time, make the voltage and the charging current that are transported to output interface (8) reach optimal parameter.
As shown in Figure 2, DC input voitage is through electric capacity (C1) filtering, and one the tunnel obtains the 5V power supply through integrated regulator (IC1) voltage stabilizing supplies with MCU (IC2), and another road is connected with the drain electrode (D) of charging control field effect transistor (Q1); Fly-wheel diode (D1) is connected with the source electrode (S) of energy storage inductor (L1) with charging control field effect transistor (Q1), voltage detecting resistance (R5), (R6) voltage after partial are sent to (6) pin of MCU (IC2): between the negative pole (-) and ground of current sense resistor (R7) serial connection and batteries, the detected parameter of current sense resistor during charging (R7) sends (5) pin of MCU (IC2) to; Temperature sensor (R4), resistance (R3) dividing potential drop send (7) pin of MCU (IC2) to as temperature parameter; After MCU (IC2) carries out computing to the data that collect, will drive triode (Q2) by resistance (R2) and arrive the grid (G) that field effect transistor (Q1) is controlled in charging, in real time control output voltage by copped wave output pin (1) by resistance (R1).Isolating diode (D2) is used to prevent that the voltage direction of battery pack from flowing into the source electrode (S) of charging control field effect transistor (Q1), plays the effect of protection.
As shown in Figure 3, the utility model is made up of aluminum hull (1), input interface and lead-in wire (2), temperature sensor and lead-in wire (3), output interface and lead-in wire (4).
As shown in Figure 4; it in the frame of broken lines the main electric component of electric bicycle (00); the utility model battery charge protection device (0) just is serially connected between the batteries (9) of outside constant voltage out-put supply (10) of electric bicycle (00) and electric bicycle (00) inside; any battery cell case in the temperature sensor (7) of utility model battery charge protection device (0) and the batteries (9) is close to, and is used for gathering storage battery 10s ambient temperature in the time before the variations in temperature of charging process and charging.Batteries (9) is connected with controller (01), and controller (01) is connected with motor (02).
Further specify the control procedure of embodiment below in conjunction with Fig. 1.
1) ambient temperature detects and charging voltage control: write one in advance when ambient temperature is 25 ℃ in microprocessor MCU (4) inside, satisfy storage battery optimal charge parameter (VCz), during real work, when the external charge device with after input interface (1) is connected, voltage stabilizing circuit (3) provides 5V working power for microprocessor MCU (4), make MCU (4) enter operating state, the end back MCU (4) that resets begins the parameter of collection (7) pin and keeps in and be designated as V1, gather a secondary data (being designated as V2) afterwards every 5 seconds, gather a secondary data (being designated as V3) again every 5 seconds, to calculate mean value [being designated as VCp, VCp=(V1+V2+V3)/3] again after the summation of 0～10s data that three times collect in the time.MCU (4) compares VCp and optimal charge parameter (VCz), if VCz-VCp＜0, then the copped wave output pin (1) of MCU (4) output pulse duty factor strengthens, drive triode (Q2) by resistance (R2) and arrive the grid (G) that field effect transistor (Q1) is controlled in charging, output voltage is reduced by resistance (R1); If VCz-VCp＞0, then the copped wave output pin (1) of MCU (4) output pulse duty factor reduces, and drives triode (Q2) by resistance (R2) and arrives the grid (G) that field effect transistor (Q1) is controlled in charging by resistance (R1), and output voltage is raise; If VCz-VCp=0, then the copped wave output pin (1) of MCU (4) output pulse duty factor keeps normal condition, drive triode (Q2) is arrived charging control field effect transistor (Q1) by resistance (R1) grid (G) by resistance (R2), making output voltage is the normal voltage output of presetting, by above temperature collection and charge parameter control, make output voltage satisfy storage battery-4mV/ ℃ characteristic voltage, avoid because the too high accumulator super-charge that causes of ambient temperature can not cause storage battery to owe to fill because of ambient temperature is low excessively yet.
2) battery temp change-detection and charging voltage control: microprocessor MCU (4) is after gathering ambient temperature and adjusting to the optimal charge parameter, begin to gather the variations in temperature of battery cell case and control charging voltage, avoid causing battery damage even scrapping because battery temp is too high.Process is: after finishing the ambient temperature detection and charging voltage control interval 30s of previous step, microprocessor MCU (4) keeps in and is designated as Vx1 with the parameter of (7) pin, gather a secondary data (being designated as Vx2) afterwards again every 5 seconds, gather a secondary data (being designated as Vx3) again every 5 seconds, calculate mean value again after the data summation that collects for three times and [be designated as VCx1, VCx1=(Vx1+Vx2+Vx3)/3], and data VCp continuous and that gather for the first time compares, if VCx1-VCp＞0, then the copped wave output pin (1) of MCU (4) output pulse duty factor strengthens, drive triode (Q2) by resistance (R2) and arrive the grid (G) that field effect transistor (Q1) is controlled in charging, output voltage is reduced by resistance (R1); Because storage battery in charging process, only temperature rising phenomenon can occur, so VCx1-VCp＜0 or VCx1-VCp=0 can not occur.
3) charging current detects and charging voltage control: storage battery needs strict its maximum charging current of control in charging process, set in advance best charging current parameter (Io) in MCU (4) inside for this reason.Charging current control procedure of the present utility model is: charging current voltage drop occurs by resistance (R7), this voltage drop is I1 by (5) pin collection of MCU (4) as charging current parameter and suspense, the data suspense of gathering behind the 1s is I2 at interval, the data suspense of gathering behind the 1s of interval is I3 again, with mean value [being designated as Ix, Ix=(I1+I2+I3)/3] again after the data summation of gathering for three times.If the copped wave output pin (1) of Ix-Io＞0 then MCU (4) output pulse duty factor strengthens, drive triode (Q2) by resistance (R2) and arrive the grid (G) of charging control field effect transistor (Q1) by resistance (R1), output voltage is reduced; If Ix-Io＜0, then the copped wave output pin (1) of MCU (4) output pulse duty factor reduces, and drives triode (Q2) by resistance (R2) and arrives the grid (G) that field effect transistor (Q1) is controlled in charging by resistance (R1), and output voltage is raise; If Ix-Io=0, then the copped wave output pin (1) of MCU (4) output pulse duty factor keeps normal condition, drive triode (Q2) is arrived charging control field effect transistor (Q1) by resistance (R1) grid (G) by resistance (R2), making output voltage is the normal voltage output of presetting, and avoids that charging current is excessive to cause the serious or too high damage of battery temp of electrolyte dehydration in the charging process.
4) output voltage detects and charging control: storage battery is when being full of electricity, its most significant end voltage has regulation, exceed this parameter and can cause battery damage, do not reach this parameter and can cause storage battery to owe to fill, set in advance the most significant end voltage parameter (Vmax) of batteries for this reason in MCU (4) inside.Charging voltage control procedure of the present utility model is: charging voltage is by resistance (R5) and resistance (R6) dividing potential drop, this voltage is V1 by (6) the pin collection of MCU (4) and suspense, the data suspense of gathering behind the 1s is V2 at interval, the data suspense of gathering behind the 1s of interval is V3 again, with mean value [being designated as Vx, Vx=(V1+V2+V3)/3] again after the data summation of gathering for three times.If Vx-Vmax＜0, then the copped wave output pin (1) of MCU (4) output pulse duty factor reduces, and drives triode (Q2) by resistance (R2) and arrives the grid (G) that field effect transistor (Q1) is controlled in charging by resistance (R1), and output voltage is raise; If Vx-Vmax=0, the continuous low level of the copped wave output pin (1) of MCU (4) output is then also ended by, charging control field effect transistor (Q1) by resistance (R2), triode (Q2), and making output voltage is 0V, and whole charging process finishes.Vx-Vmax＞0 does not exist.
Can guarantee that by the utility model storage battery can not overcharge, owe to fill or the too high casing deformation problem of temperature, prolong storage battery useful life, prolong scrapping the cycle of storage battery, be user's cost saving not only, but also have environment protecting, customer investment is few, easy to use, effective.
Claims (4)
1. battery charge protection device; comprise aluminum hull (0), input interface (1), temperature sensor (7) and output interface (8); it is characterized in that: the inner MCU (4) of also having of aluminum hull (0), power supply stabilization circuit (3), charging control circuit (2), voltage detecting circuit (5), current detection circuit (6); ambient temperature and battery temp when MCU (4) gathers charging by temperature sensor (7) change; control charge parameter, and adjust charge parameter in real time according to the data of voltage detecting and current detecting collection.
2. battery charge protection device as claimed in claim 1 is characterized in that: temperature sensor (7) is connected to the outside of aluminum hull (0) by lead-in wire, and pastes with any battery cell case in the batteries (9).
3. battery charge protection device as claimed in claim 1, it is characterized in that: in MCU (4), write one in advance when ambient temperature is 25 ℃, satisfy the optimal charge parameter (VCz) of storage battery, gather ambient temperature and average (VCp) by temperature sensor (7), if VCz-VCp＜0, then the copped wave output pin (1) of MCU (4) output pulse duty factor strengthens, drive triode (Q2) by resistance (R2) and arrive the grid (G) that field effect transistor (Q1) is controlled in charging, output voltage is reduced by resistance (R1); If VCz-VCp＞0, then the copped wave output pin (1) of MCU (4) output pulse duty factor reduces, and drives triode (Q2) by resistance (R2) and arrives the grid (G) that field effect transistor (Q1) is controlled in charging by resistance (R1), and output voltage is raise; If VCz-VCp=0, then the copped wave output pin (1) of MCU (4) output pulse duty factor keeps normal condition, drive triode (Q2) by resistance (R2) and arrive the grid (G) that field effect transistor (Q1) is controlled in charging by resistance (R1), making output voltage is the normal voltage output of presetting.
4. battery charge protection device as claimed in claim 1; it is characterized in that: aluminum hull (0) is installed in electric bicycle (00) inside; the constant voltage charger (10) of input interface (1) and electric bicycle outside is connected, and output interface (8) is connected with the inner batteries (9) of electric bicycle (00).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201470404U CN201113410Y (en) | 2007-05-31 | 2007-05-31 | Electric power driven car battery charging protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201470404U CN201113410Y (en) | 2007-05-31 | 2007-05-31 | Electric power driven car battery charging protector |
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| Publication Number | Publication Date |
|---|---|
| CN201113410Y true CN201113410Y (en) | 2008-09-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201470404U Expired - Fee Related CN201113410Y (en) | 2007-05-31 | 2007-05-31 | Electric power driven car battery charging protector |
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| CN (1) | CN201113410Y (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102280902A (en) * | 2010-06-10 | 2011-12-14 | 鸿富锦精密工业（深圳）有限公司 | Protector for battery charging |
| CN102412616A (en) * | 2010-09-26 | 2012-04-11 | 苏州益高电动车辆制造有限公司 | Battery charging and discharging management device |
| CN102957161A (en) * | 2012-11-27 | 2013-03-06 | 厦门绿沃电子科技有限公司 | Alternating/direct-current rapid-charging pile using battery charging mode |
| CN103560569A (en) * | 2013-11-20 | 2014-02-05 | 南京利维斯通自控科技有限公司 | Battery power supply system |
| CN104158261A (en) * | 2014-09-01 | 2014-11-19 | 苏州凯丰电子电器有限公司 | Safe charger |
| CN105207302A (en) * | 2015-10-19 | 2015-12-30 | 西安特锐德智能充电科技有限公司 | Flexible charging method and charger of electric car |
| CN105262171A (en) * | 2015-10-29 | 2016-01-20 | 桂林市腾瑞电子科技有限公司 | Battery charging protection control system and method |
| CN106299516A (en) * | 2016-09-21 | 2017-01-04 | 奇酷互联网络科技（深圳）有限公司 | Smart machine and charging method thereof |
| CN108008673A (en) * | 2017-11-30 | 2018-05-08 | 深圳市水务科技发展有限公司 | A kind of wireless telemetering terminating machine based on NB-IOT |
| CN111697645A (en) * | 2020-06-02 | 2020-09-22 | Oppo广东移动通信有限公司 | Charging control method and device, electronic equipment and computer readable storage medium |
| CN112787363A (en) * | 2019-11-07 | 2021-05-11 | 株洲中车时代电气股份有限公司 | Battery system, charging system and charging method |
-
2007
- 2007-05-31 CN CNU2007201470404U patent/CN201113410Y/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102280902A (en) * | 2010-06-10 | 2011-12-14 | 鸿富锦精密工业（深圳）有限公司 | Protector for battery charging |
| CN102280902B (en) * | 2010-06-10 | 2014-01-15 | 鸿富锦精密工业（深圳）有限公司 | Protector for battery charging |
| CN102412616A (en) * | 2010-09-26 | 2012-04-11 | 苏州益高电动车辆制造有限公司 | Battery charging and discharging management device |
| CN102957161A (en) * | 2012-11-27 | 2013-03-06 | 厦门绿沃电子科技有限公司 | Alternating/direct-current rapid-charging pile using battery charging mode |
| CN103560569A (en) * | 2013-11-20 | 2014-02-05 | 南京利维斯通自控科技有限公司 | Battery power supply system |
| CN104158261A (en) * | 2014-09-01 | 2014-11-19 | 苏州凯丰电子电器有限公司 | Safe charger |
| CN105207302A (en) * | 2015-10-19 | 2015-12-30 | 西安特锐德智能充电科技有限公司 | Flexible charging method and charger of electric car |
| CN105262171A (en) * | 2015-10-29 | 2016-01-20 | 桂林市腾瑞电子科技有限公司 | Battery charging protection control system and method |
| CN106299516A (en) * | 2016-09-21 | 2017-01-04 | 奇酷互联网络科技（深圳）有限公司 | Smart machine and charging method thereof |
| CN106299516B (en) * | 2016-09-21 | 2019-12-17 | 奇酷互联网络科技（深圳）有限公司 | Intelligent device and charging method thereof |
| CN108008673A (en) * | 2017-11-30 | 2018-05-08 | 深圳市水务科技发展有限公司 | A kind of wireless telemetering terminating machine based on NB-IOT |
| CN112787363A (en) * | 2019-11-07 | 2021-05-11 | 株洲中车时代电气股份有限公司 | Battery system, charging system and charging method |
| CN111697645A (en) * | 2020-06-02 | 2020-09-22 | Oppo广东移动通信有限公司 | Charging control method and device, electronic equipment and computer readable storage medium |
| CN111697645B (en) * | 2020-06-02 | 2024-01-30 | Oppo广东移动通信有限公司 | Charging control method and device, electronic equipment and computer readable storage medium |
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| Date | Code | Title | Description |
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| 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: 20080910 |