CN201322789Y - Electric vehicle storage cell condition detection and failure self-diagnosis device - Google Patents
Electric vehicle storage cell condition detection and failure self-diagnosis device Download PDFInfo
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- CN201322789Y CN201322789Y CNU2008202392407U CN200820239240U CN201322789Y CN 201322789 Y CN201322789 Y CN 201322789Y CN U2008202392407 U CNU2008202392407 U CN U2008202392407U CN 200820239240 U CN200820239240 U CN 200820239240U CN 201322789 Y CN201322789 Y CN 201322789Y
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Abstract
The utility model discloses an electric vehicle storage cell condition detection and failure self-diagnosis device which comprises a microprocessor, a circuit detection circuit, a memorizer, an analogy multiplex switch and a temperature detection circuit, wherein the circuit detection circuit and the temperature detection circuit are respectively connected with the input end of the analogy multiplex switch; the output end of the analogy multiplex switch is connected with the microprocessor; the memorizer is connected with the microprocessor in the manner of I/O extension; a failure diagnosis circuit is connected with a signal input end of the microprocessor; and an alarming circuit and a heat dissipation circuit are connected with a signal output end of the microprocessor in the manner of I/O extension. No scientific and effective detection and alarming method is developed for the use of storage cell pack for long time, therefore, during the practical use process of storage cell, user can not correctly know the condition of each storage cell; the device can rapidly check whether a storage cell pack can be used continuously and adopt visual effect to realize the alarming for users.
Description
Technical field
The utility model relates to a kind of diagnostic detection device, relates in particular to storage battery of electric motor state-detection and fault self-diagnosis device, is used for storage battery of electric motor state-detection, fault diagnosis and warning.
Background technology
Electric vehicle because of plot does not have exhaust emission, is easy to driver behavior, noiseless in urban transportation, go sightseeing, field such as goods yard, station is extensive use of, electric motor car all is that the equipment battery pack is carried out the power support, so not only can play convenient and practical effect, can also make the utilization of the energy more effective and reasonable.
But also there are a lot of problems in this, the scientific and effective detection of use neither one and the alarm method of battery pack all the time, make also that thus the user can't understand the state of each batteries accurately, causes the adynamia of electric vehicle under inessential situation in the practical process of battery; When electric vehicle uses, the battery pack electric energy also can occur and use unbalanced situation, this has just caused reduce greatly the serviceable life of the accumulator that makes that other electric energy do not exhaust.According to above problem, develop a kind of storage battery of electric motor group supervision warning system, just seem particularly important.
Summary of the invention
The utility model is at the proposition of above problem, and develops a kind of storage battery of electric motor state-detection and fault self-diagnosis device, is intended to the electric motor car user is reported in time, accurately the state of accumulator.
Technical solution of the present utility model is achieved in that
A kind of storage battery of electric motor state-detection and fault self-diagnosis device, comprise microprocessor, voltage detecting circuit, storer, analog multichannel switch, temperature sensing circuit, wherein voltage detecting circuit and temperature sensing circuit are connected in respectively on the input end of analog multichannel switch, the output terminal of analog multichannel switch is connected on the microprocessor, storer is connected on the microprocessor in the mode of I/O expansion, it is characterized in that also comprising failure detector circuit, warning circuit and heat radiation circuit, wherein failure detector circuit is made of pushbutton switch connection trigger, and warning circuit is by phase inverter, OC gate circuit and light emitting diode series connection constitute; Failure detector circuit is connected the signal input part of microprocessor, and warning circuit and heat radiation circuit are connected the signal output part of microprocessor in the mode of I/O expansion.
Described heat radiation circuit by phase inverter connect with triode, cooling fan relay the institute constitute.
Described microprocessor adopts the AT89S52 cake core.
Characteristics of the present utility model and beneficial effect are as follows:
1, the utility model can check whether battery pack can continue to detect in the use rapider;
2, the utility model adopts visual effect when the user is reported to the police, and the user can be seen very intuitively;
3, volume of the present utility model is little, and is simple to operate.
Description of drawings
The utility model is by accompanying drawing 1 width of cloth
Fig. 1 is a system architecture diagram of the present utility model;
Among the figure: 1, microprocessor, 2, voltage detecting circuit, 3, storer, 4, analog multichannel switch, 5, temperature, 6, failure detector circuit, 7, warning circuit, 8, pushbutton switch, 9, trigger, 10, phase inverter, 11, OC gate circuit, 12, light emitting diode, 13, the heat radiation circuit, 14, phase inverter, 15, triode.16, cooling fan relay.
Embodiment
As shown in Figure 1 a kind of storage battery of electric motor state-detection and fault self-diagnosis device, comprise microprocessor 1, voltage detecting circuit 2, storer 3, analog multichannel switch 4, temperature sensing circuit 5, wherein voltage detecting circuit 2 is connected in respectively on the input end of analog multichannel switch 4 with temperature sensing circuit 5, the output terminal of analog multichannel switch 4 is connected on the microprocessor 1, storer 3 is connected on the microprocessor 1 in the mode of I/O expansion, it is characterized in that also comprising failure detector circuit 6, warning circuit 7 and heat radiation circuit 13, wherein failure detector circuit 6 is made of pushbutton switch 8 connection triggers 9, and warning circuit 7 is by phase inverter 10, OC gate circuit 11 and light emitting diode 12 series connection constitute; Failure detector circuit 6 is connected the signal input part of microprocessor 1, and warning circuit 7 and heat radiation circuit 13 are connected the signal output part of microprocessor 1 in the mode of I/O expansion.
Described heat radiation circuit 13 by phase inverter 14 connect with triode 15, cooling fan relay 16 institute constitute.
Described microprocessor 1 adopts the AT89S52 cake core.
In specific embodiment, behind motor vehicle user actuating motor car, the fault detect of battery management system etc. is extinguished after bright 5 seconds, enter system's normal operating conditions: battery management system begins to export diagnostic trouble code by the flicker of fault etc., press the pushbutton switch 8 on the failure detector circuit 6, trigger the T0 port of AT80S52, make microprocessor 1 change the diagnosis interrupt service routine over to; Microprocessor 1 carries out Treatment Analysis with the signal that voltage detecting circuit 2 and temperature sensing circuit 5 send over, when detection single battery voltage is lower than 8V, voltage detecting circuit 2 is carried high level to microprocessor 1, after 1 pair of voltage signal of microprocessor is handled, the diagnostic trouble code signal is sent into warning circuit 7; There will be two kinds of situations in the identification of diagnostic trouble code:
First kind: when a batteries undertension occurring, light emitting diode 12 flickers in the warning circuit 7, the flicker cycle once is 1 second.The number of times of flicker for which batteries breaks down, and light emitting diode 12 and then can Chang Liang after flicker is played, and extinguishes after the fault eliminating.
Second kind: may break down by some batteries simultaneously, light emitting diode 12 begins to connect flicker, then do pause in 5 seconds, light emitting diode 12 is flicker continuously for the second time then, know that diagnostic trouble code all transferred, original normal bright state is got back in light emitting diode 12 flickers again, has only after fault is all got rid of, and just extinguishes.
Be higher than in 40 ℃ at the detected temperatures signal, temperature sensing circuit 5 is to microprocessor 1 output high level, after 1 pair of processes temperature signal of microprocessor, the signal after handling is sent into heat radiation circuit 13, signal enters the phase inverter 14 in the heat radiation circuit 13,15 conductings of control triode, make cooling fan relay 16 work, reach heat radiation, effect, after the battery pack temperature falls after rise, temperature sensing circuit 5 sends signal to microprocessor 1, and control cooling fan relay 16 is closed.
Consider the working condition of electric car, the measure of anti-electromagnetic interference (EMI) is necessary, has adopted the MAX813L monitor chip of MAXIM on the one hand, adopts digital filtering on the other hand when data acquisition.Wherein the MAX813L monitor circuit has following function: 1. monitor the VCC power supply, abnormity of power supply automatically resets; 2. the threshold voltage monitoring of 1.25V is provided; 3. built-in independent house dog timing circuit; 4. the hand-reset function is provided.(decide by the thresholding that lands according to the 12V power supply through dividing potential drop for its circuit connecting 12V power supply, general a little higher than 1.25V) back links to each other with the PIF of MAX813L, when the standing 12V battery supply of low pressure electric system is reduced to certain value, may cause some output misoperations, when this moment, the PFI terminal voltage was lower than 1.25V, PFO promptly became low level, causes interrupt INT 1, some output functions are stopped, and it is too low to show low pressure electric system stationary battery voltage with the continuous stroboscopic of 0.5 second cycle strobe to trigger trouble light.Treat voltage recover after operate as normal again.VCC connection+5V the power supply of MAX813L, if+the 5V abnormity of power supply can cause the system logic confusion, MAX813L reset terminal output this moment reset signal.Its WATCHDOG work is such, and the T1 mouth of master microprocessor regularly sends pulse to the WDI of MAX813L end in less than 1.6 seconds time, the WDO output high level of MAX8l3L; Otherwise MAX813L is after detecting less than pulse in 1.6 seconds, and WDO then can output low level, makes system reset.
The method of the digital filtering of data acquisition is a lot, consider the characteristic of target component, it is comparatively effective to use low-pass digital filter, it only needs sampling twice, and its algorithm is: YN=aXN+ (1-a) YN-1, this sampled value of XN in the formula, YN-1 is sampled value last time, a is a filter factor, is far smaller than 1 usually, and YN is this filtering output value.The cutoff frequency of this filtering algorithm is generally calculated by formula fL=a/2 π t, and wherein a is a filter factor, and t is a sampling interval.
The purpose one of microprocessor 1 increased flash memory device is in order to remember diagnostic trouble code after the power down, the 2nd, set up reference data table for convenience automatically.Adopt at this that volume is little, cost is low, circuit is simple, take system address line and 3 few line automated storage AT93C66 of data, microprocessor AT89S52 connects the CS sheet choosing of AT93C66, P1.0, P1.1, P1.2 connect CLK clock, DI input, the DO output of AT93C66 respectively, and its capacity is 1K.
The above; it only is the preferable embodiment of the utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; be equal to replacement or change according to the technical solution of the utility model and inventive concept thereof, all should be encompassed within the protection domain of the present utility model.
Claims (3)
1, a kind of storage battery of electric motor state-detection and fault self-diagnosis device, comprise microprocessor (1), voltage detecting circuit (2), storer (3), analog multichannel switch (4), temperature sensing circuit (5), wherein voltage detecting circuit (2) is connected in respectively on the input end of analog multichannel switch (4) with temperature sensing circuit (5), the output terminal of analog multichannel switch (4) is connected on the microprocessor (1), storer (3) is connected on the microprocessor (1) in the mode of I/O expansion, it is characterized in that also comprising failure detector circuit (6), warning circuit (7) and heat radiation circuit (13), wherein failure detector circuit (6) is made of pushbutton switch (8) connection trigger (9), and warning circuit (7) is by phase inverter (10), OC gate circuit (11) and light emitting diode (12) series connection constitute; Failure detector circuit (6) is connected the signal input part of microprocessor (1), and warning circuit (7) and heat radiation circuit (13) are connected the signal output part of microprocessor (1) in the mode of I/O expansion.
2, storage battery of electric motor state-detection according to claim 1 and fault self-diagnosis device, described heat radiation circuit (13) by phase inverter (14) connect with triode (15), cooling fan relay (16) constitute.
3, storage battery of electric motor state-detection according to claim 1 and fault self-diagnosis device, described microprocessor (1) adopts the AT89S52 cake core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202392407U CN201322789Y (en) | 2008-12-29 | 2008-12-29 | Electric vehicle storage cell condition detection and failure self-diagnosis device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202392407U CN201322789Y (en) | 2008-12-29 | 2008-12-29 | Electric vehicle storage cell condition detection and failure self-diagnosis device |
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| Publication Number | Publication Date |
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| CN201322789Y true CN201322789Y (en) | 2009-10-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2008202392407U Expired - Fee Related CN201322789Y (en) | 2008-12-29 | 2008-12-29 | Electric vehicle storage cell condition detection and failure self-diagnosis device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102081144B (en) * | 2009-11-30 | 2013-03-27 | 中国移动通信集团甘肃有限公司 | Device and system for monitoring and alarming faults of storage battery |
| CN103723051A (en) * | 2013-12-20 | 2014-04-16 | 惠州市亿能电子有限公司 | State synchronizing and tracking method of distributed battery management system |
| CN105150877A (en) * | 2015-08-14 | 2015-12-16 | 陕西核昌机电装备有限公司 | Integrated electric control system for electric sweeping vehicle |
-
2008
- 2008-12-29 CN CNU2008202392407U patent/CN201322789Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102081144B (en) * | 2009-11-30 | 2013-03-27 | 中国移动通信集团甘肃有限公司 | Device and system for monitoring and alarming faults of storage battery |
| CN103723051A (en) * | 2013-12-20 | 2014-04-16 | 惠州市亿能电子有限公司 | State synchronizing and tracking method of distributed battery management system |
| CN105150877A (en) * | 2015-08-14 | 2015-12-16 | 陕西核昌机电装备有限公司 | Integrated electric control system for electric sweeping 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: 20091007 Termination date: 20101229 |