CN2739862Y - Electric bicycle lithium ion cell energy package - Google Patents
Electric bicycle lithium ion cell energy package Download PDFInfo
- Publication number
- CN2739862Y CN2739862Y CN 200420009236 CN200420009236U CN2739862Y CN 2739862 Y CN2739862 Y CN 2739862Y CN 200420009236 CN200420009236 CN 200420009236 CN 200420009236 U CN200420009236 U CN 200420009236U CN 2739862 Y CN2739862 Y CN 2739862Y
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- battery
- chip microcomputer
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- battery pack
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Abstract
The utility model relates to an electric bicycle lithium ion cell energy package. A 14. 4V to 48V cell group which is composed of 4-14 lithium ion cells packed with plastic-aluminum film flexible package having square and flat shape is arranged in a housing, each pressure wire which is leadout from each cell of the cell group with the positive pole and the negative pole of each cell of the cell group are connected in series is connected with an electric voltage temperature monitoring device. The positive pole of the cells connected in series is connected with a charging and discharging interface, and the negative pole of the cell group is connected with an electric current monitoring device through a contactless switch. The utility model has safe protection when the electric voltage, the electric current and the temperature are abnormal, and the electric bicycle lithium ion cell energy package can be made into energy package with any ampere-hour number and shape conveniently. The utility model has the advantages of high specific capacity, good safety, light weight, small volume and no pollution for the environment.
Description
Technical field
The utility model relates to a kind of electric bicycle lithium-ion battery energy bag, belongs to the vehicle power power supply.
Background of invention
The most lead-acid battery group electric supply installations that use of present domestic electric bicycle.Lead-acid battery produce and use in contaminated environment very easily, extremely conflict and be widely applied to environmental issue in all parts of the country, and flexible packing lithium ion battery it to have a volume little, in light weight, environmentally safe, the lithium ion battery that existing electric bicycle uses is that the direct serial or parallel connection of a plurality of cells is abandoned and dressed up 24V, the assembled battery of 36V or 48V voltage directly uses, this device is dangerous, because during the multiple batteries charging, in charging normal voltage range, indivedual advanced cell voltages surpass battery cutoff voltage, this batteries voltage is more and more higher, cause battery pack blast on fire at last, during its two multiple batteries discharge, when individual cell voltage is lower than discharge cut-off voltage, can cause the battery permanent damages, so the supervisory control system of cell safety is very important to battery applications.
Summary of the invention
The purpose of this utility model is the shortcoming and deficiency in order to overcome above-mentioned prior art just, and a kind of electric bicycle lithium-ion battery energy bag that has safety device is provided, thereby has guaranteed safety.
The purpose of this utility model realizes by following technical proposal:
Electric bicycle lithium-ion battery energy bag; it is by shell (2); battery pack (1); power interface and safety guard (3) are formed; it is characterized in that being equipped with in the enclosure 14.4V to the 48V battery pack of forming by 4～14 flat type lithium ion batteries in aluminum plastic film flexible package side; safety guard is by voltage monitoring equipment; current monitoring device and device for monitoring temperature are formed; every battery of battery pack just; draw the pressure-wire (5) of every battery and the voltage monitoring equipment of safety guard after the negative pole series connection; device for monitoring temperature (16) links to each other; voltage monitoring equipment; device for monitoring temperature is connected with noncontacting switch (6) respectively; the positive pole of battery pack and charging; discharge interface (4) connects, and the negative pole of battery pack connects to form major loop by the current monitoring device (7) of noncontacting switch and safety guard.
The voltage monitoring equipment of described safety guard comprises voltage signal acquisition; photoelectrical coupler; photoelectric relay and channel to channel adapter; voltage signal acquisition be with the battery of battery pack successively one by one with the output voltage input of each battery and connect 1 pin that resistance R 1 inserts precision photoelectric coupler (9) input; 2 pin; 3 pin ground connection; 4 pin connect the modulus converter A/D input that resistance R 2 connects single-chip microcomputer (13); hold ground connection in addition; another interface is connected with noncontacting switch; connect resistance R 3 and+5V power supply between R2 and the A/D; photoelectric relay (8) input is inserted at every battery two ends in the battery pack (1); the identical pin of its delivery outlet also connects the A/D input that photoelectrical coupler connects single-chip microcomputer; other holds ground connection; photoelectric relay connects+the 5V power supply; select for use inside to have the digital channel selector (10) on 4-16 road to be connected with single-chip microcomputer; the chip selection signal of single-chip microcomputer connects reverser (14) input, and output is connected the drive end CS1 of track selector; CS2; CSIO connects photoelectric relay respectively.
The current monitoring device of described safety guard it adopt contactless Hall element to gather electric current; the main circuit that Hall element main circuit voltage signal Ui is connected to battery pack connects with operational amplifier IC1 (12) positive input terminal that is connected capacitor C 11, C12, parallel resistance R11, R12; its output is connected with A/D converter input port in the single-chip microcomputer, and another interface of single-chip microcomputer is connected with noncontacting switch.
The device for monitoring temperature of described safety guard it select for use Lm74 transducer (11) to be attached to the battery outside; its U+ is connected the positive and negative end of series diode (15) that capacitor C 21 connects power supply respectively+5V power supply with GND; SI/O is for gathering the serial data I/O end of Schmidt trigger; SC is the serial clock input; SC meets the synchronous serial clock mouth SCK of single-chip microcomputer; SI/O is connected with SDO series resistance R21 with single-chip microcomputer SDI; the CS of single-chip microcomputer is connected with the sheet of LM74 choosing end/C, and another interface of single-chip microcomputer is connected with noncontacting switch.
Described safety guard also is provided with the LCD interface, and described precision photoelectric coupler is PC817, and the digital channel selector is CD4067, and operational amplifier is ICL7650, and described temperature sensor LM74 is 1m74cim-3.
Owing to take technique scheme to make the technology of the present invention compared with the prior art have following advantage and effect:
A) can conveniently make the energy bag of any ampere-hour number and shape, the specific capacity height, fail safe is good, in light weight, volume is little, environmentally safe,
B) the static consumption of entire circuit system is low, and accuracy of detection has protection and constant current constant voltage equalizing charge less than 25MV, guarantees that battery can safe repeated multiple times use,
C) also have the reparation charge function, behind the battery full charging, stop charging automatically.
Description of drawings
Fig. 1 is a battery power pack arrangement schematic diagram
Fig. 2 is a battery power bag electrical equipment block diagram
Fig. 3 is the voltage acquisition line map of single battery
Fig. 4 is the voltage monitoring equipment line map
Fig. 5 is a current monitoring device line map
Fig. 6 is the device for monitoring temperature line map
Embodiment
Electric bicycle lithium-ion battery energy bag, by shown in Figure 1, it is made up of shell (2), battery pack (1), power interface (not shown) and safety guard (3), 14.4V to the 48V battery pack of being made up of 4～14 flat type lithium ion batteries in aluminum plastic film flexible package side is housed in the enclosure, adopt flexible packing lithium ion battery to require the battery of cell chemical property high conformity to form battery pack, shell is made of the good aluminium of thermal diffusivity; Safety guard is by voltage monitoring equipment; current monitoring device and device for monitoring temperature are formed; every battery of battery pack just; draw the pressure-wire (5) of each battery and the voltage monitoring equipment of safety guard after the negative pole series connection; device for monitoring temperature (16) links to each other; voltage monitoring equipment; device for monitoring temperature is connected with noncontacting switch (6) respectively; the positive pole of battery pack and charging; discharge interface (4) connects; the negative pole of battery pack is connected with the current monitoring device (7) of safety guard by noncontacting switch; by shown in Figure 2; the positive pole of battery pack and charging; discharge interface (4) connects; the negative pole of battery pack connects to form major loop by the current monitoring device (7) of noncontacting switch and safety guard; the safety guard of battery pack is to the voltage of every battery; electric current and temperature are carried out data acquisition process and are shown, safeguard protection occurs carrying out when unusual.
Voltage monitoring equipment; by shown in Figure 4; it is the voltage monitoring part line map of battery pack; comprise voltage signal acquisition; photoelectrical coupler; relay and channel to channel adapter; voltage signal acquisition is by shown in Figure 3; it is the voltage acquisition line map of single battery; with 4～14 batteries successively one by one with the output voltage input of each battery and connect 1 pin that resistance R 1 inserts precision photoelectric coupler (9) input; 2 pin; 3 pin ground connection; 4 pin connect the modulus converter A/D input that resistance R 2 connects single-chip microcomputer (13); output head grounding; another interface is connected with noncontacting switch; connect resistance R 3 and+5V power supply between R2 and the A/D; selecting PC817 is that photoelectricity is isolated the transmission voltage device, PC817 transmission voltage value, and its linearity when 2.5-5V is good; and the protection voltage of lithium ion battery is 2.5-4.2V, will gather voltage signal V at each cell
n, wherein V is set in n=4～14
ChBe cell safety upper limit cut-off point, V
DisBe predefined battery discharge lower limit cut-off point, when charging, the V of any battery
n＜V
Ch, send and forbid charging signals, disconnected control charge circuit signal, when battery discharge, as long as one detect any one battery V
n＜V
Dis, just sending the interruption discharge loop, the noncontacting switch of control discharge loop is high-impedance state, has only the V of working as
Dis＜V
n＜V
ChShi Caineng allows energy bag to carry out discharge process or carry out battery charge.Photoelectric relay (8) input is inserted at every battery two ends in 4-14 the battery pack (1), the identical pin of its delivery outlet also connects the A/D input that photoelectrical coupler (9) connects single-chip microcomputer, other holds ground connection, photoelectric relay connects+the 5V power supply, select for use inside to have the digital channel selector (10) on 4-16 road to be connected with single-chip microcomputer, select CD4067 digital channel selector, the chip selection signal of single-chip microcomputer connects reverser (14) input, output is connected the drive end CS1 of track selector, CS2, CSIO connects photoelectric relay respectively, wherein R1 is a current-limiting resistance, R2, R3 provides the photoelectrical coupler power supply, each battery is access in single-chip microcomputer and switches each passage in certain sequence can realize that battery voltage value imports successively, select for use inside to have 4-16 circuit-switched data channel to channel adapter CD4067 (10) to be connected with single-chip microcomputer, can or turn-off different photoelectric relays according to its selecting side conducting of Single-chip Controlling, the list of battery magnitude of voltage is only passed to single-chip microcomputer PICA/D input and carried out data processing through advancing photoelectric coupling circuit, because cell voltage is getting one by one, isolate by photoelectric coupling circuit again, solved problem with single-chip microcomputer common mode ground, solve the problem that can directly read each cell voltage simultaneously, reduced the error of measuring.
The current monitoring device, by shown in Figure 5, its current monitoring device line map, current monitoring adopts contactless Hall element to gather electric current, Hall element main circuit voltage signal Ui is connected to the major loop and C11 in parallel of battery pack, C12, two ends R11 in parallel, operational amplifier IC1 (12) positive input terminal of R12 connects, its output is connected with A/D converter input port in the single-chip microcomputer, another interface is connected with noncontacting switch, R11 wherein, R12 and amplifier proportion of composing amplifier, C11, C12 is a weakening electric capacity, and it adopts contactless Hall element to gather electric current, and it does not consume the lithium battery energy, circuit is simple, and outputting standard millivolt voltage, operational amplifier is selected ICL7650 for use, and ICL7650 is low drift, single supply ten 5V get final product work, set I.For maximum discharge of the battery pack of regulation and charge capacity definite value, as I＞I.The time, will interrupt charge or discharge rapidly;
Device for monitoring temperature, by shown in Figure 6, it is the device for monitoring temperature line map, monitoring temperature selects for use Lm74 transducer (11) to be attached to the battery outside, wherein U+ is connected the positive and negative end of series diode (15) that C21 connects power supply respectively+5V power supply with GND, diode can make 5V voltage drop to 3.6V, the resistance that R21 adds for the requirement of communication port.SI/O is for gathering the serial data I/O end of Schmidt trigger, SC is the serial clock input, SC meets the synchronous serial clock mouth SCK of single-chip microcomputer, SI/O is connected with SDO series resistance R21 with single-chip microcomputer SDI, another interface of single-chip microcomputer is connected with noncontacting switch, the CS of single-chip microcomputer and LM74 /C is connected, temperature sensor self is passed to single-chip microcomputer with temperature signal by the SI/O pin, it can the output temperature data be the associated temperature controlled quentity controlled variable to select digital temperature sensor for use, adaptive various microcontroller, and can the simplest mode constitute the multi-functional intelligent temperature monitoring of high performance-price ratio, selecting the Im74cim-3 transducer for use is that american semiconductor company produces, it includes temperature sensor and 13 sigma-delta formula A/D transducers, and temperature-measuring range is-55 ℃～+ 125 ℃, can reach-10 ℃～+ 65 ℃ precision ± 1.When temperature superelevation or overcurrent, the automatic disconnection major loop,
When the voltage, electric current and the temperature that detect battery take place to cut off major loop by noncontacting switch immediately when unusual, make battery be in open-circuit condition; When discharge examination is low to cell voltage, cut off the discharge major loop by noncontacting switch, when charging, detect cell voltage when saturated, cut off charge circuit by cutting off the major loop noncontacting switch; When detecting the charge and discharge overcurrent, cut off charge circuit by the major loop noncontacting switch.
The safety guard of energy bag of the present utility model also is provided with the LCD interface, and LCD can be selected the KS0108B/HD61202 graphic lcd for use, can observe each parameter situation.
During operate as normal, the bicycle plug is plugged, opened switch and just can discharge, charger inserts the charge and discharge interface during charging, charges, and charging finishes when voltage reaches rated value.
Energy bag of the present utility model is applicable to that electric bicycle, scooter, bus, motorcycle, each energy bag weigh 3.5 kilograms, 2.4 liters of volumes, and one 3.5 kilograms 18Ah/24V energy bags, once charging can be travelled 66 kilometers.
Claims (7)
1; a kind of electric bicycle lithium-ion battery energy bag; it is by shell (2); battery pack (1); power interface and safety guard (3) are formed; it is characterized in that being equipped with in the enclosure 14.4V to the 48V battery pack of forming by 4～14 flat type lithium ion batteries in aluminum plastic film flexible package side; safety guard is by voltage monitoring equipment; current monitoring device and device for monitoring temperature are formed; every battery of battery pack just; draw the pressure-wire (5) of every battery and the voltage monitoring equipment of safety guard after the negative pole series connection; device for monitoring temperature (16) links to each other; voltage monitoring equipment; device for monitoring temperature is connected with noncontacting switch (6) respectively; the positive pole of battery pack and charging; discharge interface (4) connects, and the negative pole of battery pack connects to form major loop by the current monitoring device (7) of noncontacting switch and safety guard.
2; battery power bag according to claim 1; the voltage monitoring equipment that it is characterized in that described safety guard comprises voltage signal acquisition; photoelectrical coupler; photoelectric relay and channel to channel adapter; voltage signal acquisition be with the battery of battery pack successively one by one with the output voltage input of each battery and connect 1 pin that resistance R 1 inserts precision photoelectric coupler (9) input; 2 pin; 3 pin ground connection; 4 pin connect the modulus converter A/D input that resistance R 2 connects single-chip microcomputer (13); hold ground connection in addition; another interface is connected with noncontacting switch; connect resistance R 3 and+5V power supply between R2 and the A/D; photoelectric relay (8) input is inserted at every battery two ends in the battery pack (1); the identical pin of its delivery outlet also connects the A/D input that photoelectrical coupler connects single-chip microcomputer; other holds ground connection; photoelectric relay connects+the 5V power supply; select for use inside to have the digital channel selector (10) on 4-16 road to be connected with single-chip microcomputer; the chip selection signal of single-chip microcomputer connects reverser (14) input, and output is connected the drive end CS1 of track selector; CS2; CSIO connects photoelectric relay respectively.
3, battery power bag according to claim 1; it is characterized in that described safety guard the current monitoring device it adopt contactless Hall element to gather electric current; the main circuit that Hall element main circuit voltage signal Ui is connected to battery pack connects with operational amplifier IC1 (12) positive input terminal that is connected capacitor C 11, C12, parallel resistance R11, R12; its output is connected with A/D converter input port in the single-chip microcomputer, and another interface of single-chip microcomputer is connected with noncontacting switch.
4; battery power bag according to claim 1; it is characterized in that described safety guard device for monitoring temperature it select for use Lm74 transducer (11) to be attached to the battery outside; its U+ is connected with GND that series diode (15) that capacitor C 21 connects power supply respectively+the 5V power supply just; negative terminal; SI/O is for gathering the serial data I/O end of Schmidt trigger; SC is the serial clock input; SC meets the synchronous serial clock mouth SCK of single-chip microcomputer; SI/O is connected with SDO series resistance R21 with single-chip microcomputer SDI; the CS of single-chip microcomputer is connected with the sheet of LM74 choosing end/C, and another interface of single-chip microcomputer is connected with noncontacting switch.
5, battery power bag according to claim 1 is characterized in that described safety guard also is provided with the LCD interface.
6, battery power bag according to claim 1 is characterized in that described precision photoelectric coupler is PC817, and the digital channel selector is CD4067, and operational amplifier is ICL7650.
7, battery power bag according to claim 1 is characterized in that described temperature sensor LM74 is 1m74cim-3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420009236 CN2739862Y (en) | 2004-08-11 | 2004-08-11 | Electric bicycle lithium ion cell energy package |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420009236 CN2739862Y (en) | 2004-08-11 | 2004-08-11 | Electric bicycle lithium ion cell energy package |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2739862Y true CN2739862Y (en) | 2005-11-09 |
Family
ID=35354922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420009236 Expired - Lifetime CN2739862Y (en) | 2004-08-11 | 2004-08-11 | Electric bicycle lithium ion cell energy package |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2739862Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1295811C (en) * | 2004-08-11 | 2007-01-17 | 北京中信国安盟固利新材料技术研究院有限公司 | Lithium ion cell energy pack for electric bicycle |
| CN101399453B (en) * | 2007-09-27 | 2011-09-07 | 株式会社日立制作所 | Battery assembly comprised of modules including monitoring devices with isolated communication between processors in the monitoring devices |
-
2004
- 2004-08-11 CN CN 200420009236 patent/CN2739862Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1295811C (en) * | 2004-08-11 | 2007-01-17 | 北京中信国安盟固利新材料技术研究院有限公司 | Lithium ion cell energy pack for electric bicycle |
| CN101399453B (en) * | 2007-09-27 | 2011-09-07 | 株式会社日立制作所 | Battery assembly comprised of modules including monitoring devices with isolated communication between processors in the monitoring devices |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20040811 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |