CN204028328U - A kind of novel wireless opening lead-acid battery monitoring system and wireless management system - Google Patents
A kind of novel wireless opening lead-acid battery monitoring system and wireless management system Download PDFInfo
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- CN204028328U CN204028328U CN201420331116.9U CN201420331116U CN204028328U CN 204028328 U CN204028328 U CN 204028328U CN 201420331116 U CN201420331116 U CN 201420331116U CN 204028328 U CN204028328 U CN 204028328U
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Abstract
The utility model discloses a kind of novel wireless opening lead-acid battery monitoring system, and Acid Battery System comprises: the battery be connected with load, the first microprocessor be electrically connected with the detection signal output terminal of wireless opening lead-acid battery monitoring system; Liquid level detecting unit is connected between described battery and first microprocessor; Internal resistance detection unit is connected between battery and first microprocessor; First wireless transmit/receive units and first microprocessor are electrically connected.The utility model internal resistance detection unit and liquid level detecting unit can detect the internal resistance of battery and the liquid level of electrolytic solution further, and judge that the index of battery performance is comparatively comprehensive, it is more accurate to detect; The electrolyte temperature of direct measurement battery, measurement result is more reliable; Can the performance of the multiple battery of wireless monitor, observation circuit is connected directly between on both positive and negative polarity two poles of battery, without the need to wiring, more convenient practicality.
Description
Technical field
The present invention relates to battery detection and management domain, particularly relate to a kind of novel wireless opening lead-acid battery monitoring system and wireless management system.
Background technology
At present, opening lead-acid battery has been widely used in the fields such as the power supply of traction drive system, the reliability and stability of performance index to its application product of opening lead-acid battery have significant impact, if opening lead-acid battery lost efficacy, even likely cause a serious accident, therefore, the performance monitoring of opening lead-acid battery is just seemed particularly necessary.
The monitoring parameter mainly voltage of opening lead-acid battery, electric current, temperature, internal resistance, the liquid level etc. of electrolytic solution, simultaneously, as everyone knows, opening lead-acid accumulator inevitably causes the loss of electrolytic solution in power supply process filling, and in the prior art, mostly just by the voltage of opening lead-acid battery, electric current and these three indexs of temperature carry out the overcharge of protective opening lead-acid battery, overdischarge and thermal runaway, but, the internal resistance of cell is the most important Judging index of battery performance and degree of aging, electrolytic solution lacks, and battery can be caused to lose efficacy rapidly and even damage, shorter battery life and production cost is caused to rise, even have an accident, therefore, the performance monitoring method of existing opening lead-acid battery can not meet the demand of actual production.
Summary of the invention
The technical matters that the present invention mainly solves is to provide a kind of novel wireless opening lead-acid battery monitoring system and wireless management system, described internal resistance detection unit can detect the internal resistance of battery further, judge that the index of battery performance is more accurate, described liquid level detecting unit can detect the liquid level of the electrolytic solution of battery further, and the detection method for electrolyte volume is more accurate; The electrolyte temperature of direct measurement battery, the measurement battery case temperature of relative conventional art, measurement index is more accurate, and measurement result has more reference value; Can the performance of the multiple battery of wireless monitor, be convenient to the expansion of system, maintenance upgrade, more convenient practicality.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: provide a kind of novel wireless opening lead-acid battery monitoring system, comprising:
Battery, is connected to provide electric energy with load;
First microprocessor, receive the detection signal in described novel wireless opening lead-acid battery monitoring system, judge battery performance according to described detection signal and send communication signal, described detection signal comprises voltage detection signal, current detection signal, electrolyte temperature detection signal, liquid level detection signal and internal resistance detection signal;
Liquid level detecting unit, described liquid level detecting unit is connected between described battery and described first microprocessor and obtains described liquid level detection signal with the liquid level detecting the electrolytic solution in described battery, and described liquid level detection signal is sent to described first microprocessor;
Internal resistance detection unit, described internal resistance detection unit is connected between described battery and described first microprocessor and obtains described internal resistance detection signal with the internal resistance detecting described battery, and described internal resistance detection signal is sent to described first microprocessor;
First wireless transmit/receive units, is electrically connected to transmit described communication signal with described first microprocessor.
In a preferred embodiment of the present invention, described novel wireless opening lead-acid battery monitoring system comprises further:
Voltage detection unit and signal conditioning circuit, described signal conditioning circuit is connected between described voltage detection unit and described first microprocessor, the voltage that described voltage detection unit detects described battery obtains described voltage detection signal, and described voltage detection signal is sent to described first microprocessor after described signal conditioning circuit process;
Electrolyte temperature detecting unit, described electrolyte temperature detecting unit is connected between described battery and described first microprocessor and obtains described electrolyte temperature detection signal with the temperature of the electrolytic solution detecting described battery, and described electrolyte temperature detection signal is sent to described first microprocessor.
In a preferred embodiment of the present invention, described liquid level detecting unit comprises liquid level sensor, and described electrolyte temperature detecting unit comprises temperature sensor.
In a preferred embodiment of the present invention, described wireless opening lead-acid battery monitoring system comprises supply voltage regulon further, and described supply voltage regulon and described first microprocessor are electrically connected.
In a preferred embodiment of the present invention, the method that described internal resistance detection unit measures the internal resistance of cell comprises the following steps:
A) constant current source is utilized to inject a constant ac current signal to battery, then the ac voltage signal at battery two ends is measured, described ac voltage signal forms the first signal through the first phase shifter process, and described ac current signal forms secondary signal through the second phase shifter process;
B) described ac voltage signal and described ac current signal are formed the 3rd signal through the first analog multiplier process; Described first signal and described secondary signal are formed the 4th signal through the second analog multiplier process;
C) described 3rd signal and the 4th signal are formed the 5th signal through totalizer process;
D) first microprocessor is sent to after successively direct current amplification, analog-to-digital conversion process being carried out to described 5th signal.
The present invention also provides a kind of wireless management system, comprise wireless opening lead-acid battery monitoring system novel described at least one, current detecting unit and monitoring unit, wireless opening lead-acid battery monitoring system novel described in each and described monitoring unit wireless connections, the electric current that described current detecting unit detects described battery obtains described current detection signal, and described current detection signal is sent to first microprocessor described in one of them, described current detection signal is sent to described monitoring unit by the first wireless transmit/receive units by this first microprocessor, described Acid Battery System comprises:
Battery, is connected to provide electric energy with load;
First microprocessor, receive the detection signal in described novel Acid Battery System, judge battery performance according to described detection signal and send communication signal, described detection signal comprises voltage detection signal, current detection signal, electrolyte temperature detection signal, liquid level detection signal and internal resistance detection signal;
Liquid level detecting unit, described liquid level detecting unit is connected between described battery and described first microprocessor and obtains described liquid level detection signal with the liquid level detecting the electrolytic solution in described battery, and described liquid level detection signal is sent to described first microprocessor;
Internal resistance detection unit, described internal resistance detection unit is connected between described battery and described first microprocessor and obtains described internal resistance detection signal with the internal resistance detecting described battery, and described internal resistance detection signal is sent to described first microprocessor;
First wireless transmit/receive units, is electrically connected to transmit described communication signal with described first microprocessor.
In a preferred embodiment of the present invention, described current detecting unit comprises Hall current sensor.
In a preferred embodiment of the present invention, described monitoring unit comprises the second microprocessor and the second wireless transmit/receive units.
In a preferred embodiment of the present invention, described second wireless transmit/receive units and the first wireless transmit/receive units wireless connections described in each are to receive described communication signal, with described second microprocessor, described second wireless transmit/receive units is electrically connected that the communication signal received is sent to described second microprocessor further.
The invention has the beneficial effects as follows: internal resistance detection unit of the present invention and liquid level detecting unit can detect the internal resistance of battery and the liquid level of electrolytic solution further, judge that the Indexes Comparison of battery performance is comprehensive, detection method is more accurate; The electrolyte temperature of direct measurement battery, the measurement battery case temperature of relative conventional art, measurement index is more accurate, and measurement result is more reliable; Can the performance of the multiple battery of wireless monitor, more convenient practicality.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings, wherein:
Fig. 1 is the circuit structure block diagram of novel Acid Battery System of the present invention;
Fig. 2 is the circuit structure block diagram of wireless management system of the present invention;
Fig. 3 is the method schematic diagram of the internal resistance detection unit inspection internal resistance of cell of the present invention;
Fig. 4 is the electrical block diagram of signal conditioning circuit of the present invention;
Fig. 5 is the electrical block diagram of supply voltage regulon one of the present invention preferred embodiment;
Fig. 6 is the electrical block diagram of another preferred embodiment of supply voltage regulon of the present invention.
Embodiment
Be clearly and completely described to the technical scheme in the embodiment of the present invention below, obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 1 to Fig. 6, the embodiment of the present invention comprises:
A novel wireless opening lead-acid battery monitoring system, comprising:
Battery, is connected to provide electric energy with load;
First microprocessor, receive the detection signal in described novel wireless opening lead-acid battery monitoring system, judge battery performance according to described detection signal and send communication signal, described detection signal comprises voltage detection signal, current detection signal, electrolyte temperature detection signal, liquid level detection signal and internal resistance detection signal;
Liquid level detecting unit, described liquid level detecting unit is connected between described battery and described first microprocessor and obtains described liquid level detection signal with the liquid level detecting the electrolytic solution in described battery, and described liquid level detection signal is sent to described first microprocessor;
Internal resistance detection unit, described internal resistance detection unit is connected between described battery and described first microprocessor and obtains described internal resistance detection signal with the internal resistance detecting described battery, and described internal resistance detection signal is sent to described first microprocessor;
First wireless transmit/receive units, is electrically connected to transmit described communication signal with described first microprocessor;
Voltage detection unit and signal conditioning circuit, described signal conditioning circuit is connected between described voltage detection unit and described first microprocessor, the voltage that described voltage detection unit detects described battery obtains described voltage detection signal, and described voltage detection signal is sent to described first microprocessor after described signal conditioning circuit process;
Electrolyte temperature detecting unit, described electrolyte temperature detecting unit is connected between described battery and described first microprocessor and obtains described electrolyte temperature detection signal with the temperature of the electrolytic solution detecting described battery, and described electrolyte temperature detection signal is sent to described first microprocessor;
Supply voltage regulon, is electrically connected with described first microprocessor, and for regulating the supply voltage of first microprocessor, physical circuit as shown in Figure 5 and Figure 6.
In the present invention, described liquid level detecting unit comprises liquid level sensor, and described electrolyte temperature detecting unit comprises temperature sensor, and the method that described internal resistance detection unit measures the internal resistance of cell comprises the following steps:
A) constant current source is utilized to inject a constant ac current signal to battery, then the ac voltage signal at battery two ends is measured, described ac voltage signal forms the first signal through the first phase shifter process, and described ac current signal forms secondary signal through the second phase shifter process;
B) described ac voltage signal and described ac current signal are formed the 3rd signal through the first analog multiplier process; Described first signal and described secondary signal are formed the 4th signal through the second analog multiplier process;
C) described 3rd signal and the 4th signal are formed the 5th signal through totalizer process;
D) first microprocessor is sent to after successively direct current amplification, analog-to-digital conversion process being carried out to described 5th signal.
The concrete computation process that described internal resistance detection unit measures the method for the internal resistance of cell is as follows:
If pumping signal, namely ac current signal is:
(formula 1)
The ac voltage signal of accumulator two ends response is:
(formula 2)
for the phase differential of the ac voltage signal that ac current signal and its two ends of injecting accumulator respond.
The ac voltage signal at accumulator two ends
the first signal formed after the first phase shifter is:
; (formula 3)
Ac current signal
the secondary signal formed after the second phase shifter is:
; (formula 4)
with
the 3rd signal formed after the first analog multiplier is:
; (formula 5)
with
the 4th signal formed after the second analog multiplier is:
; (formula 6)
with
the 5th signal after totalizer is:
; (formula 7)
The principle being surveyed internal resistance by AC method obtains:
(formula 8)
In sum,
; (formula 9)
In above formula, A is known quantity, and u delivers to through analog to digital conversion sampling the sampled value that first microprocessor carries out processing, so carry out a simple division arithmetic just can obtain accumulator internal resistance in first microprocessor.
The present embodiment has carried out sampling Comparability test to two batches of new and old electric battery respectively according to said method, and wherein a collection of battery is the brand-new 2V560AH battery of 192 joint, is divided into 6 groups, choose often in group a battery measure; Another batch is for being about to the 192 joint 2V560AH batteries eliminated, be divided into 6 groups, choose often in group a battery measure, the excitation sinusoidal ac signal assignment adopted in this measuring method is 200mV, frequency is 30Hz, Precision reference resistance R and capacitance C is respectively 1 Ω and 4700uF, and corresponding measurement result is as follows:
In upper form, resistance apparatus measuring value is the internal resistance of cell value adopting resistance instrument to measure in prior art, the present embodiment measured value is the internal resistance of cell value adopting AC impedence method of the present invention to measure, known by the correlative value in form, resistance apparatus measuring value and the present embodiment measured value have certain difference, as can be seen here, the present invention improves measurement effect after Testing index more comprehensively, accurately in employing.
The present invention also provides a kind of wireless management system, comprise wireless opening lead-acid battery monitoring system, current detecting unit and monitoring unit novel described at least one, Acid Battery System novel described in each and described monitoring unit wireless connections, the electric current that described current detecting unit detects described battery obtains described current detection signal, and described current detection signal is sent to first microprocessor described in one of them, described current detection signal is sent to described monitoring unit by the first wireless transmit/receive units by this first microprocessor.
Wherein, described current detecting unit comprises Hall current sensor, and described monitoring unit comprises the second microprocessor and the second wireless transmit/receive units.Described second wireless transmit/receive units and the first wireless transmit/receive units wireless connections described in each are to receive described communication signal, with described second microprocessor, described second wireless transmit/receive units is electrically connected that the communication signal received is sent to described second microprocessor further.
When embody rule, first microprocessor of the present invention is according to each detection signal comprehensive descision battery performance, and battery performance index communication signal is sent to described second wireless transmit/receive units by described first wireless transmit/receive units, battery performance index communication signal is sent to described second microprocessor and does further process by described second wireless transmit/receive units again.
Compared with prior art, internal resistance detection unit of the present invention and liquid level detecting unit can detect the internal resistance of battery and the liquid level of electrolytic solution further, and judge that the Indexes Comparison of battery performance is comprehensive, detection method is more accurate; The electrolyte temperature of direct measurement battery, the measurement battery case temperature of relative conventional art, measurement index is more accurate, and measurement result has more reference value; Can the performance of the multiple battery of wireless monitor, be convenient to the expansion of system, maintenance upgrade, more convenient practicality.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical field, be all in like manner included in scope of patent protection of the present invention.
Claims (8)
1. a novel wireless opening lead-acid battery monitoring system, is characterized in that, comprising:
Battery, is connected with load;
First microprocessor, be electrically connected with the detection signal output port in described novel wireless opening lead-acid battery monitoring system, described detection signal comprises voltage detection signal, current detection signal, electrolyte temperature detection signal, liquid level detection signal and internal resistance detection signal;
Liquid level detecting unit, is connected between described battery and described first microprocessor;
Internal resistance detection unit, is connected between described battery and described first microprocessor;
First wireless transmit/receive units, is electrically connected with described first microprocessor.
2. wireless opening lead-acid battery monitoring system novel according to claim 1, is characterized in that, described novel wireless opening lead-acid battery monitoring system comprises further:
Voltage detection unit and signal conditioning circuit, described signal conditioning circuit is connected between described voltage detection unit and described first microprocessor;
Electrolyte temperature detecting unit, is connected between described battery and described first microprocessor.
3. wireless opening lead-acid battery monitoring system novel according to claim 2, it is characterized in that, described liquid level detecting unit comprises liquid level sensor, and described electrolyte temperature detecting unit comprises temperature sensor.
4. wireless opening lead-acid battery monitoring system novel according to claim 1, it is characterized in that, described wireless opening lead-acid battery monitoring system comprises supply voltage regulon further, and described supply voltage regulon and described first microprocessor are electrically connected.
5. a wireless management system, it is characterized in that, comprise at least one as arbitrary in claim 1 to 5 as described in novel wireless opening lead-acid battery monitoring system, current detecting unit and monitoring unit, Acid Battery System novel described in each and described monitoring unit wireless connections.
6. wireless management system according to claim 5, is characterized in that, described current detecting unit comprises Hall current sensor.
7. wireless management system according to claim 5, is characterized in that, described monitoring unit comprises the second microprocessor and the second wireless transmit/receive units.
8. wireless management system according to claim 7, is characterized in that, described second wireless transmit/receive units and the first wireless transmit/receive units wireless connections described in each, described second wireless transmit/receive units is electrically connected with described second microprocessor further.
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| CN201420331116.9U CN204028328U (en) | 2014-06-20 | 2014-06-20 | A kind of novel wireless opening lead-acid battery monitoring system and wireless management system |
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Granted publication date: 20141217 Termination date: 20160620 |