CN203069762U - Electric vehicle storage battery power monitoring device - Google Patents
Electric vehicle storage battery power monitoring device Download PDFInfo
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- CN203069762U CN203069762U CN 201220709569 CN201220709569U CN203069762U CN 203069762 U CN203069762 U CN 203069762U CN 201220709569 CN201220709569 CN 201220709569 CN 201220709569 U CN201220709569 U CN 201220709569U CN 203069762 U CN203069762 U CN 203069762U
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Abstract
The utility model discloses an electric vehicle storage battery power monitoring device. The electric vehicle storage battery power monitoring device comprises a power monitoring unit and an interface unit. The power monitoring unit comprises a first current detection module, a second current detection module, a CPU processing module and a storage unit. The interface unit comprises a charging input interface, a discharging output interface, a data output interface and a storage battery negative pole interface. Both ends of the first current detection module are respectively connected with the storage battery positive pole and the discharging output interface. Both ends of the second current detection module are respectively connected with the storage battery positive pole and the charging input interface. The CPU processing module is respectively connected with the storage unit, the data output end of the first current detection module and the data output end of the second current detection module. The storage unit is further connected with the data output interface. The storage battery negative pole interface is connected with the storage battery negative pole. According to the utility model, by carrying out integral computation on the current of storage battery charging and discharging, the power of the storage battery is calculated, thus the power value of the storage battery can be accurately monitored in real time.
Description
Technical field
The utility model relates to accumulator electric-quantity detection technique field, relates in particular to a kind of accumulator of electric car electric quantity monitoring device.
Background technology
Along with the reinforcement gradually of new forms of energy consciousness, the development of electric automobile is competitively carried out in countries in the world.The all power accumulator of electric automobile is as the core component of electric automobile, and its electric weight is important as the oil mass in the orthodox car fuel tank.Fuel level gauge on the orthodox car reflects the oil mass in the orthodox car fuel tank in real time, makes car steering person understand how many oil masses the automobile of driving also remains, and how many kilometers can also travel.Equally, the electric weight of electric powered motor accumulator also needs to reflect in real time the dump energy of accumulator, how many kilometers so that the clear electric automobile of driving of driver can also travel.Tradition normally reflects by the magnitude of voltage between the accumulator anode and cathode the detection method of accumulator dump energy, but the terminal voltage of accumulator can not accurately reflect the electric weight of accumulator, even it is normal voltage to occur, the phenomenon of electric weight deficiency.So, electric automobile is reflected that real-time and accurately the dump energy of accumulator of electric car seems very necessary.
Chinese patent publication number CN2852416, open day on Dec 27th, 2006, the name of utility model is called the cell monitoring device in a kind of electric battery, this application case discloses the cell monitoring device in a kind of electric battery, and it comprises electric battery and the communication interface that is made of two cell series connection at least; Described electric battery both positive and negative polarity output terminal links to each other with the cell voltage change-over circuit that is made of two component volt circuits at least; The output terminal of described cell voltage change-over circuit and CPU center processing unit join; The output terminal of described CPU center processing unit links to each other with data-carrier store, communication interface and warning device respectively.Its weak point is, this monitoring device calculates the electric weight of cell by the voltage that detects the cell two ends, and the terminal voltage of battery can not accurately reflect the electric weight of battery, even it is normal voltage to occur, the phenomenon of electric weight deficiency.
The utility model content
The purpose of this utility model is to overcome existing accumulator electric-quantity monitoring device by the electric weight of the magnitude of voltage calculating accumulator of accumulator, and the terminal voltage of accumulator can not accurately reflect the electric weight of accumulator, even it is normal voltage to occur, the technical matters of the phenomenon of electric weight deficiency, a kind of accumulator of electric car electric quantity monitoring device is provided, it carries out the electric weight that integral operation calculates accumulator by the electric current to accumulator cell charging and discharging, can accurately monitor the charge value of accumulator in real time.
In order to address the above problem, the utility model is achieved by the following technical solutions:
A kind of accumulator of electric car electric quantity monitoring device of the present utility model, powered by power module, comprise electric quantity monitoring unit and interface unit, described electric quantity monitoring unit comprises first current detection module, second current detection module, CPU processing module and storage unit, described interface unit comprises charging input interface, the discharge output interface, data output interface and battery terminal negative interface, the current output terminal of the current input terminal of described first current detection module and second current detection module all links to each other with battery positive voltage, the current output terminal of first current detection module links to each other with the discharge output interface, the current input terminal of second current detection module links to each other with charging input interface, described CPU processing module respectively with storage unit, the data output end of first current detection module links to each other with the data output end of second current detection module, described storage unit also links to each other with data output interface, described battery terminal negative interface links to each other with battery terminal negative, described electric quantity monitoring unit, interface unit and accumulators collection become one.
In the technical program, electric quantity monitoring unit and interface unit all become one with accumulators collection, externally connect by interface unit.The initial electric weight of accumulator is 0, and the initial accumulator electric-quantity value of cell stores is 0.
When accumulator is charged, the both positive and negative polarity of charging equipment is linked to each other with the battery terminal negative interface with charging input interface respectively, the discharge output interface is not connected with consumer.After beginning charging, charging current is charged to accumulator through the positive pole that charging input interface and second current detection module are delivered to accumulator successively, at this moment, second current detection module detects the charging current through wherein, and detected current value outputed to the CPU processing module, the CPU processing module is carried out integral operation to the current value that every T received in second, calculate the charge capacity value Q2 in the time T, the CPU processing module is carried out the mathematics assignment operation with the accumulator electric-quantity value Q that stores in charge capacity value Q2 and the storage unit, be Q=Q+Q2, and the accumulator electric-quantity value of storing in the storage unit is updated to accumulator electric-quantity value Q after the assignment operation.
When accumulator is powered to consumer, the both positive and negative polarity of consumer is linked to each other with the battery terminal negative interface with the discharge output interface respectively, charging input interface is not connected with charging equipment.After accumulator begins power supply, discharge current is delivered to the consumer positive pole through first current detection module with the discharge output interface successively and is powered to consumer, at this moment, first current detection module detects the discharge current through wherein, and detected current value outputed to the CPU processing module, the CPU processing module is carried out integral operation to the current value that every T received in second, calculate the discharge electricity amount value Q1 in the time T, the CPU processing module is carried out the mathematics assignment operation with the accumulator electric-quantity value Q that stores in discharge electricity amount value Q1 and the storage unit, be Q=Q-Q1, and the accumulator electric-quantity value of storing in the storage unit is updated to accumulator electric-quantity value Q after the assignment operation.
Display device can link to each other with data output interface by data line, by the accumulator electric-quantity value of storing in the storage unit access acquisition storage unit, thereby can show the accumulator electric-quantity value in real time.
As preferably, described first current detection module comprises first current sensor, first A/D converter and first not circuit, described second current detection module comprises second current sensor, second A/D converter and second not circuit, the current output terminal of the current input terminal of first current sensor and second current sensor links to each other with battery positive voltage respectively, the current output terminal of first current sensor links to each other with the discharge output interface, the current input terminal of second current sensor links to each other with charging input interface, the data output end of first current sensor links to each other with the input end of first not circuit and the input end of first A/D converter respectively, the data output end of second current sensor links to each other the output terminal of first not circuit with the input end of second not circuit and the input end of second A/D converter respectively, the output terminal of first A/D converter, the output terminal of the output terminal of second not circuit and second A/D converter links to each other with the CPU processing module respectively.
First current sensor detects the discharge current through wherein, and exports detected current value to first not circuit and first A/D converter with the form of corresponding voltage value.When battery discharging, first not circuit produces the low level trigger pip and is sent to the CPU processing module, first A/D converter is converted to digital signal with the analog voltage signal that receives and sends to the CPU processing module, the CPU processing module is carried out integral operation to every T current value that first A/D converter sends in second after receiving the low level trigger pip, calculates the discharge electricity amount value Q1 in the time T.When accumulator did not discharge, first not circuit produced high trigger signal and is sent to the CPU processing module, and the CPU processing module stops to calculate discharge electricity amount.
Second current sensor detects the charging current through wherein, and exports detected current value to second not circuit and second A/D converter with the form of corresponding voltage value.When charge in batteries, second not circuit produces the low level trigger pip and is sent to the CPU processing module, second A/D converter is converted to digital signal with the analog voltage signal that receives and sends to the CPU processing module, the CPU processing module is carried out integral operation to every T current value that second A/D converter sends in second after receiving the low level trigger pip, calculates the charge capacity value Q2 in the time T.When accumulator did not charge, second not circuit produced high trigger signal and is sent to the CPU processing module, and the CPU processing module stops to calculate charge capacity.
As preferably, described CPU processing module comprises a CPU processing unit and the 2nd CPU processing unit, the one CPU processing unit links to each other with the output terminal of first not circuit and the output terminal of first A/D converter respectively, and the 2nd CPU processing unit links to each other with the output terminal of second not circuit and the output terminal of second A/D converter respectively.
The one CPU processing unit is used for the discharge current of accumulator is carried out integral operation, and the 2nd CPU processing unit is used for the charging current of accumulator is carried out integral operation.
As preferably, described first current detection module also comprises diode D1, described second current detection module also comprises diode D2, the anode of diode D1 links to each other with the current output terminal of first current sensor, the negative electrode of diode D1 links to each other with the discharge output interface, the anode of diode D2 links to each other with the current output terminal of second current sensor, and the negative electrode of diode D2 links to each other with battery positive voltage.Diode D1 and diode D2 work to prevent current reflux.
As preferably, described first current detection module also comprises filter capacitor C1, described second current detection module also comprises filter capacitor C2, the two ends of filter capacitor C1 link to each other with earth terminal with the power end of first current sensor respectively, and the two ends of filter capacitor C2 link to each other with earth terminal with the power end of second current sensor respectively.Filter capacitor C1 and filter capacitor C2 are used for filtering out the low frequency signal of electric current, make the direct current of input more level and smooth.
As preferably, described first current detection module also comprises denoising capacitor C 3, described second current detection module also comprises denoising capacitor C 4, the two ends of denoising capacitor C 3 link to each other with data output end with the earth terminal of first current sensor respectively, and the two ends of denoising capacitor C 4 link to each other with data output end with the earth terminal of second current sensor respectively.Denoising capacitor C 3 and denoising capacitor C 4 are used for removing noise, improve antijamming capability.
The beneficial effects of the utility model are: (1) carries out the electric weight that integral operation calculates accumulator by the electric current to accumulator cell charging and discharging, can accurately monitor the charge value of accumulator in real time.(2) electric quantity monitoring unit, interface unit and accumulators collection are become one, be convenient in electric automobile, use, need not electric automobile and design the accumulator electric-quantity observation circuit in addition.
Description of drawings
Fig. 1 is a kind of circuit theory diagrams of the present utility model.
Among the figure: 1, power module, 2, interface unit, 3, first current detection module, 4, second current detection module, 5, the CPU processing module, 6, storage unit, 7, accumulator, 21, charging input interface, 22, the discharge output interface, 23, data output interface, 24, battery terminal negative interface, 31, first current sensor, 32, first A/D converter, 33, first not circuit, 41, second current sensor, 42, second A/D converter, 43, second not circuit, 51, a CPU processing unit, the 52, the 2nd CPU processing unit.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment: a kind of accumulator of electric car electric quantity monitoring device of present embodiment, as shown in Figure 1, by power module 1 power supply, comprise electric quantity monitoring unit and interface unit 2, the electric quantity monitoring unit, interface unit 2 and accumulator 7 become one, the electric quantity monitoring unit comprises first current detection module 3, second current detection module 4, CPU processing module 5 and storage unit 6, interface unit 2 comprises charging input interface 21, discharge output interface 22, data output interface 23 and battery terminal negative interface 24, first current detection module 3 comprises first current sensor 31, first A/D converter 32, first not circuit 33, filter capacitor C1, denoising capacitor C 3, resistance R 1 and resistance R 3, second current detection module 4 comprises second current sensor 41, second A/D converter 42, second not circuit 43, filter capacitor C2, denoising capacitor C 4, resistance R 2 and resistance R 4, CPU processing module 5 comprise a CPU processing unit 51 and the 2nd CPU processing unit 52.
The current input terminal of first current sensor 31 and 7 anodal linking to each other of accumulator, the current output terminal of first current sensor 31 links to each other with discharge output interface 22 by diode D1, the data output end of first current sensor 31 links to each other with resistance R 1 one ends, resistance R 1 other end and denoising capacitor C 3 one ends, the input end of resistance R 3 one ends and first A/D converter 32 links to each other, denoising capacitor C 3 other ends link to each other with the earth terminal of first current sensor 31, resistance R 3 other ends link to each other with the input end of first not circuit 33, the one CPU processing unit 51 links to each other with the output terminal of first not circuit 33 and the output terminal of first A/D converter 32 respectively, and the two ends of filter capacitor C1 link to each other with earth terminal with the power end of first current sensor 31 respectively.
The current input terminal of second current sensor 41 links to each other with charging input interface 21, the current output terminal of second current sensor 41 is by diode D2 and 7 anodal linking to each other of accumulator, the data output end of second current sensor 41 links to each other with resistance R 2 one ends, resistance R 2 other ends and denoising capacitor C 4 one ends, the input end of resistance R 4 one ends and second A/D converter 42 links to each other, denoising capacitor C 4 other ends link to each other with the earth terminal of second current sensor 41, resistance R 4 other ends link to each other with the input end of second not circuit 43, the 2nd CPU processing unit 52 links to each other with the output terminal of second not circuit 43 and the output terminal of second A/D converter 42 respectively, and the two ends of filter capacitor C2 link to each other with earth terminal with the power end of second current sensor 41 respectively.
Storage unit 6 links to each other with data output interface 23 with a CPU processing unit 51, the 2nd CPU processing unit 52 respectively, and the battery terminal negative interface links to each other with battery terminal negative.
Diode D1 and diode D2 work to prevent current reflux; Filter capacitor C1 and filter capacitor C2 are used for filtering out the low frequency signal of electric current, make the direct current of input more level and smooth; Denoising capacitor C 3 and denoising capacitor C 4 are used for removing noise, improve antijamming capability.Electric quantity monitoring unit and interface unit 2 all become one with accumulator 7, externally connect by interface unit 2, and the initial electric weight of accumulator 7 is 0, and the initial accumulator electric-quantity value of storage unit 6 storages is 0.
When accumulator 7 is charged, the both positive and negative polarity of charging equipment is linked to each other with battery terminal negative interface 24 with charging input interface 21 respectively, discharge output interface 22 is not connected with consumer.After beginning charging, charging current is charged to accumulator 7 through the positive pole that charging input interface 21, second current sensor 41 and diode D2 deliver to accumulator 7 successively.At this moment, second current sensor 41 detects the charging current through wherein, and export detected current value to second not circuit 43 and second A/D converter 42 with the form of corresponding voltage value, second not circuit 43 produces the low level trigger pip and is sent to the 2nd CPU processing unit 52, second A/D converter 42 is converted to digital signal with the analog voltage signal that receives and sends to the 2nd CPU processing unit 52, the 2nd CPU processing unit 52 receives after the low level trigger pip current value that second A/D converter 42 in per 1 second is sent and carries out integral operation, calculate the charge capacity value Q2 in per 1 second, the 2nd CPU processing unit 52 carries out the mathematics assignment operation with the accumulator electric-quantity value Q of storage in charge capacity value Q2 and the storage unit 6, be Q=Q+Q2, and the accumulator electric-quantity value of storage in the storage unit 6 is updated to accumulator electric-quantity value Q after the assignment operation.When accumulator 7 did not charge, second not circuit, 43 generation high trigger signal were sent to the 2nd CPU processing unit 52, the two CPU processing units 52 and quit work.
When accumulator 7 is powered to consumer, the both positive and negative polarity of consumer is linked to each other with battery terminal negative interface 24 with discharge output interface 22 respectively, charging input interface 21 is not connected with charging equipment.After accumulator 7 began discharge, discharge current was delivered to the consumer positive pole through first current sensor 31, diode D1 and discharge output interface 22 successively and is powered to consumer.At this moment, first current sensor 31 detects the discharge current through wherein, and export detected current value to first not circuit 33 and first A/D converter 32 with the form of corresponding voltage value, first not circuit 33 produces the low level trigger pip and is sent to a CPU processing unit 51, first A/D converter 32 is converted to digital signal with the analog voltage signal that receives and sends to a CPU processing unit 51, the one CPU processing unit 51 receives after the low level trigger pip current value that first A/D converter 32 in per 1 second is sent and carries out integral operation, calculate the discharge electricity amount value Q1 in per 1 second, the one CPU processing unit 51 carries out the mathematics assignment operation with the accumulator electric-quantity value Q of storage in discharge electricity amount value Q1 and the storage unit 6, be Q=Q-Q1, and the accumulator electric-quantity value of storage in the storage unit 6 is updated to accumulator electric-quantity value Q after the assignment operation.When accumulator 7 did not discharge, first not circuit, 33 generation high trigger signal were sent to a CPU processing unit 51, the one CPU processing units 51 and quit work.
Digital instrument dial plate on the electric automobile can link to each other with data output interface 23 by data line, obtains the accumulator electric-quantity value of storage in the storage unit 6 by storage unit access 6, thereby can show the accumulator electric-quantity value in real time.
Claims (6)
1. accumulator of electric car electric quantity monitoring device, powered by power module (1), it is characterized in that: comprise electric quantity monitoring unit and interface unit (2), described electric quantity monitoring unit comprises first current detection module (3), second current detection module (4), CPU processing module (5) and storage unit (6), described interface unit (2) comprises charging input interface (21), discharge output interface (22), data output interface (23) and battery terminal negative interface (24), the current output terminal of the current input terminal of described first current detection module (3) and second current detection module (4) all links to each other with accumulator (7) is anodal, the current output terminal of first current detection module (3) links to each other with discharge output interface (22), the current input terminal of second current detection module (4) links to each other with charging input interface (21), described CPU processing module (5) respectively with storage unit (6), the data output end of first current detection module (3) links to each other with the data output end of second current detection module (4), described storage unit (6) also links to each other with data output interface (23), described battery terminal negative interface (24) links to each other described electric quantity monitoring unit with accumulator (7) negative pole, interface unit (2) and accumulator (7) become one.
2. a kind of accumulator of electric car electric quantity monitoring device according to claim 1, it is characterized in that: described first current detection module (3) comprises first current sensor (31), first A/D converter (32) and first not circuit (33), described second current detection module (4) comprises second current sensor (41), second A/D converter (42) and second not circuit (43), the current output terminal of the current input terminal of first current sensor (31) and second current sensor (41) links to each other with accumulator (7) is anodal respectively, the current output terminal of first current sensor (31) links to each other with discharge output interface (22), the current input terminal of second current sensor (41) links to each other with charging input interface (21), the data output end of first current sensor (31) links to each other with the input end of first not circuit (33) and the input end of first A/D converter (32) respectively, the data output end of second current sensor (41) links to each other the output terminal of first not circuit (33) with the input end of second not circuit (43) and the input end of second A/D converter (42) respectively, the output terminal of first A/D converter (32), the output terminal of the output terminal of second not circuit (43) and second A/D converter (42) links to each other with CPU processing module (5) respectively.
3. a kind of accumulator of electric car electric quantity monitoring device according to claim 2, it is characterized in that: described CPU processing module (5) comprises a CPU processing unit (51) and the 2nd CPU processing unit (52), the one CPU processing unit (51) links to each other with the output terminal of first not circuit (33) and the output terminal of first A/D converter (32) respectively, and the 2nd CPU processing unit (52) links to each other with the output terminal of second not circuit (43) and the output terminal of second A/D converter (42) respectively.
4. a kind of accumulator of electric car electric quantity monitoring device according to claim 2, it is characterized in that: described first current detection module (3) also comprises diode D1, described second current detection module (4) also comprises diode D2, the anode of diode D1 links to each other with the current output terminal of first current sensor (31), the negative electrode of diode D1 links to each other with discharge output interface (22), the anode of diode D2 links to each other with the current output terminal of second current sensor (41), and the negative electrode of diode D2 links to each other with accumulator (7) is anodal.
5. according to claim 2 or 3 or 4 described a kind of accumulator of electric car electric quantity monitoring devices, it is characterized in that: described first current detection module (3) also comprises filter capacitor C1, described second current detection module (4) also comprises filter capacitor C2, the two ends of filter capacitor C1 link to each other with earth terminal with the power end of first current sensor (31) respectively, and the two ends of filter capacitor C2 link to each other with earth terminal with the power end of second current sensor (41) respectively.
6. according to claim 2 or 3 or 4 described a kind of accumulator of electric car electric quantity monitoring devices, it is characterized in that: described first current detection module (3) also comprises denoising capacitor C 3, described second current detection module (4) also comprises denoising capacitor C 4, the two ends of denoising capacitor C 3 link to each other with data output end with the earth terminal of first current sensor (3) respectively, and the two ends of denoising capacitor C 4 link to each other with data output end with the earth terminal of second current sensor (4) respectively.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220709569 CN203069762U (en) | 2012-12-20 | 2012-12-20 | Electric vehicle storage battery power monitoring device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201220709569 CN203069762U (en) | 2012-12-20 | 2012-12-20 | Electric vehicle storage battery power monitoring device |
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| CN203069762U true CN203069762U (en) | 2013-07-17 |
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| CN 201220709569 Expired - Fee Related CN203069762U (en) | 2012-12-20 | 2012-12-20 | Electric vehicle storage battery power monitoring device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107179506A (en) * | 2016-03-11 | 2017-09-19 | 北汽福田汽车股份有限公司 | A kind of method, device, system and vehicle for determining accumulator capacity |
| CN109116239A (en) * | 2018-06-06 | 2019-01-01 | 安徽锐能科技有限公司 | The detection system of monomer voltage for battery pack |
| CN109819582A (en) * | 2017-11-22 | 2019-05-28 | 奇酷互联网络科技（深圳）有限公司 | Circuit board, electric quantity monitoring circuit, circuit board manufacturing method and electronic equipment |
-
2012
- 2012-12-20 CN CN 201220709569 patent/CN203069762U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107179506A (en) * | 2016-03-11 | 2017-09-19 | 北汽福田汽车股份有限公司 | A kind of method, device, system and vehicle for determining accumulator capacity |
| CN109819582A (en) * | 2017-11-22 | 2019-05-28 | 奇酷互联网络科技（深圳）有限公司 | Circuit board, electric quantity monitoring circuit, circuit board manufacturing method and electronic equipment |
| CN109116239A (en) * | 2018-06-06 | 2019-01-01 | 安徽锐能科技有限公司 | The detection system of monomer voltage for battery pack |
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Granted publication date: 20130717 Termination date: 20171220 |