CN105620291A - Battery voltage detecting method, equipment and device and battery management system - Google Patents
Battery voltage detecting method, equipment and device and battery management system Download PDFInfo
- Publication number
- CN105620291A CN105620291A CN201510998770.4A CN201510998770A CN105620291A CN 105620291 A CN105620291 A CN 105620291A CN 201510998770 A CN201510998770 A CN 201510998770A CN 105620291 A CN105620291 A CN 105620291A
- Authority
- CN
- China
- Prior art keywords
- wire harness
- electric component
- voltage sample
- sample wire
- battery
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0046—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electric energy storage systems, e.g. batteries or capacitors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a battery voltage detecting method, equipment and a device and a battery management system. The method comprises the following steps: a first voltage sampling wire bundle is arranged at a first end of an electric module for serially connecting a first battery with a second battery, and a second voltage sampling wire bundle is arranged at a second end of the electric module; voltage of the first battery is acquired through the first voltage sampling wire bundle and a third voltage sampling wire bundle, wherein the third voltage sampling wire bundle is arranged at one end of the first battery far from the first end of the electric module; and voltage of the second battery is acquired through the second voltage sampling wire bundle and a fourth voltage sampling wire bundle, wherein the fourth voltage sampling wire bundle is arranged at one end of the second battery far from the second end of the electric module. The method solves the technical problem of lower precision of battery monomer voltage acquisition in the prior art.
Description
Technical field
The present invention relates to field of batteries, specifically, it relates to a kind of method, equipment, device and battery management system detecting cell voltage.
Background technology
Electromobile take vehicle power as power, drives wheel to travel with motor. Electromobile has that environmental pollution is little, noise is little, energy utilization rate advantages of higher, has good development prospect.
The many process by batteries up to a hundred of the batteries of electric automobile group of present stage is in series, and to meet whole car to the requirement of voltage and capacity, the state of each battery is related to the performance of whole Battery pack, so the state of each battery must be carried out Real-Time Monitoring.
The battery management system of electromobile has monitor in real time battery state, optimizes the vital role such as the use safety of use energy capacity of battery, extending battery life and guarantee battery. The safe operation of whole car, the selection of integrated vehicle control tactics, the selection of charge mode and operation cost are all had a great impact by battery management system.
Contriver finds, in prior art when detecting battery cell voltage, owing to detection the inaccurate of battery cell voltage causes battery management system that the accuracy of detection of battery cell voltage is low, causes the control and management effect of battery management system not good.
For above-mentioned problem, effective solution is not yet proposed at present.
Summary of the invention
Embodiments provide a kind of method, equipment, device and the battery management system that detect cell voltage, at least to solve the low technical problem of the precision comparison gathering battery cell voltage in prior art.
An aspect according to embodiments of the present invention, provide a kind of method detecting cell voltage, comprising: the first end at the electric component for connect the first battery and the 2nd battery arranges the first voltage sample wire harness, the 2nd end at described electric component arranges the 2nd voltage sample wire harness; Gathered the voltage of described first battery by described first voltage sample wire harness and the 3rd voltage sample wire harness, wherein, described 3rd voltage sample wire harness is arranged on one end of described first battery of the first end away from described electric component; Gathered the voltage of described 2nd battery by described 2nd voltage sample wire harness and the 4th voltage sample wire harness, wherein, described 4th voltage sample wire harness is arranged on one end of described 2nd battery of the 2nd end away from described electric component.
Further, first end at the electric component for connect the first battery and the 2nd battery arranges the first voltage sample wire harness, before the 2nd end of described electric component arranges the 2nd voltage sample wire harness, described method also comprises: the resistance detecting the equivalent resistance of the described electric component for connect described first battery and described 2nd battery; Judge whether the resistance of described equivalent resistance is greater than or equal to preset resistive value; When judging that the resistance of described equivalent resistance is greater than or equal to described preset resistive value, it is determined that the first end at described electric component arranges described first voltage sample wire harness, the 2nd end at described electric component arranges described 2nd voltage sample wire harness.
Further, first end at the electric component for connect the first battery and the 2nd battery arranges the first voltage sample wire harness, the 2nd end at described electric component arranges the 2nd voltage sample wire harness and comprises: whether detection is provided with described first voltage sample wire harness at the first end of described electric component, or the 2nd end of described electric component is provided with described 2nd voltage sample wire harness; If the first end of described electric component is provided with described first voltage sample wire harness, then the 2nd end at described electric component arranges described 2nd voltage sample wire harness; If the 2nd end of described electric component is provided with described 2nd voltage sample wire harness, then first end at described electric component arranges described first voltage sample wire harness.
Further, first end at the electric component for connect the first battery and the 2nd battery arranges the first voltage sample wire harness, and the 2nd end at described electric component arranges the 2nd voltage sample wire harness and comprises: whether detection is provided with the 5th voltage sample wire harness at the predeterminated position of described electric component; If the predeterminated position at described electric component is provided with described 5th voltage sample wire harness, then remove described 5th voltage sample wire harness, and described 2nd voltage sample wire harness is set at the 2nd end of described electric component, and described first voltage sample wire harness is set at the first end of described electric component.
One side again according to embodiments of the present invention, additionally provides a kind of equipment detecting cell voltage, comprising: the first battery and the 2nd battery, and described first battery and described 2nd battery are connected by electric component, battery voltage acquisition device, at least it is provided with the first voltage sample wire harness, 2nd voltage sample wire harness, 3rd voltage sample wire harness and the 4th voltage sample wire harness, wherein, the first end of described first voltage sample wire harness is connected with described battery voltage acquisition device, 2nd end of described first voltage sample wire harness is connected with the first end of described electric component, the first end of described 2nd voltage sample wire harness is connected with described battery voltage acquisition device, 2nd end of described 2nd voltage sample wire harness is connected with the 2nd end of described electric component, wherein, described battery voltage acquisition device gathers the voltage of described first battery by described first voltage sample wire harness and the 3rd voltage sample wire harness, wherein, described 3rd voltage sample wire harness is arranged on one end of described first battery of the first end away from described electric component, described battery voltage acquisition device gathers the voltage of described 2nd battery by described 2nd voltage sample wire harness and the 4th voltage sample wire harness, wherein, described 4th voltage sample wire harness is arranged on one end of described 2nd battery of the 2nd end away from described electric component.
One side again according to embodiments of the present invention, additionally provides a kind of battery management system, and this battery management system comprises the equipment of above-mentioned detection cell voltage.
One side again according to embodiments of the present invention, additionally provide a kind of device detecting cell voltage, comprise: setting unit, for arranging the first voltage sample wire harness at the first end of the electric component for connect the first battery and the 2nd battery, the 2nd end at described electric component arranges the 2nd voltage sample wire harness; First collecting unit, for being gathered the voltage of described first battery by described first voltage sample wire harness and the 3rd voltage sample wire harness, wherein, described 3rd voltage sample wire harness is arranged on one end of described first battery of the first end away from described electric component; 2nd collecting unit, for being gathered the voltage of described 2nd battery by described 2nd voltage sample wire harness and the 4th voltage sample wire harness, wherein, described 4th voltage sample wire harness is arranged on one end of described 2nd battery of the 2nd end away from described electric component.
Further, described device also comprises: detecting unit, for arranging the first voltage sample wire harness at described setting unit at the first end of the electric component for connect the first battery and the 2nd battery, before the 2nd end of described electric component arranges the 2nd voltage sample wire harness, detect the resistance of the equivalent resistance of the described electric component for connect described first battery and described 2nd battery; Whether judging unit, be greater than or equal to preset resistive value for judging the resistance of described equivalent resistance; Determining unit, for when described judging unit judges that the resistance of described equivalent resistance is greater than or equal to described preset resistive value, determining to arrange described first voltage sample wire harness at the first end of described electric component, the 2nd end at described electric component arranges described 2nd voltage sample wire harness.
Further, described setting unit comprises: the first detection sub-unit, whether the first end of described electric component is provided with described first voltage sample wire harness for detecting, or the 2nd end of described electric component is provided with described 2nd voltage sample wire harness; First arranges subelement, for when the first end that described first detection sub-unit detects out described electric component is provided with described first voltage sample wire harness, the 2nd end at described electric component arranges described 2nd voltage sample wire harness; 2nd arranges subelement, for when the 2nd end that described first detection sub-unit detects out described electric component is provided with described 2nd voltage sample wire harness, the first end at described electric component arranges described first voltage sample wire harness.
Further, described setting unit comprises: the 2nd detection sub-unit, whether the predeterminated position of described electric component is provided with the 5th voltage sample wire harness for detecting; 3rd arranges subelement, for when the predeterminated position that described 2nd detection sub-unit detects out described electric component is provided with described 5th voltage sample wire harness, remove described 5th voltage sample wire harness, and described 2nd voltage sample wire harness is set at the 2nd end of described electric component, and described first voltage sample wire harness is set at the first end of described electric component.
In embodiments of the present invention, the first end at the electric component for connect the first battery and the 2nd battery arranges the first voltage sample wire harness, and the 2nd end at electric component arranges the 2nd voltage sample wire harness; Gathered the voltage of the first battery by the first voltage sample wire harness and the 3rd voltage sample wire harness, wherein, the 3rd voltage sample wire harness is arranged on one end of the first battery of the first end away from electric component; Gathered the voltage of the 2nd battery by the 2nd voltage sample wire harness and the 4th voltage sample wire harness, wherein, the 4th voltage sample wire harness is arranged on one end of the 2nd battery of the 2nd end away from electric component. By arranging voltage sample wire harness at the two ends of electric component, gather the voltage of battery cell voltage and electric component respectively, make the dividing potential drop not comprising electric component in the battery cell voltage collected, eliminate in the battery cell voltage of collection the dividing potential drop brought by electric component, thus achieve the technique effect of the precision improving detection battery cell voltage, and then solve the low technical problem of the precision comparison gathering battery cell voltage in prior art.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms the part of the present invention, and the schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention. In the accompanying drawings:
Fig. 1 is the schematic diagram of battery management system according to embodiments of the present invention;
Fig. 2 is the schema of the method for detection cell voltage according to embodiments of the present invention; And
Fig. 3 is the schematic diagram of the device of detection cell voltage according to embodiments of the present invention.
Embodiment
In order to make those skilled in the art understand the present invention program better, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the embodiment of a part 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, should belong to the scope of protection of the invention.
It should be noted that, term " first " in the specification sheets of the present invention and claim book and above-mentioned accompanying drawing, " the 2nd " etc. are for distinguishing similar object, and need not be used for describing specific order or precedence. Should be appreciated that the data of like this use can be exchanged in the appropriate case, so as embodiments of the invention described herein can with except diagram here or describe those except order implement. In addition, term " comprises " and " having " and their any distortion, intention is to cover does not arrange his comprising, such as, contain those steps or unit that the process of series of steps or unit, method, system, product or equipment are not necessarily limited to clearly list, but can comprise that clearly do not list or for intrinsic other step of these processes, method, product or equipment or unit.
According to embodiments of the present invention, provide the embodiment of a kind of method detecting cell voltage, it should be noted that, can perform in the computer system of such as one group of computer executable instructions in the step shown in the schema of accompanying drawing, and, although show logical order in flow charts, but in some cases, it is possible to be different from the step shown or described by the execution of order herein.
According to embodiments of the present invention, it provides the embodiment of a kind of battery management system.
Fig. 1 is the schematic diagram of battery management system according to embodiments of the present invention. As shown in Figure 1, battery management system comprises battery cell voltage acquisition unit and voltage sample wire harness. Specifically, adjacent two batteries are connected by electric component, first end at electric component arranges the first voltage sample wire harness, the 2nd end at electric component arranges the 2nd voltage sample wire harness, the first voltage sample wire harness and the 3rd voltage sample wire harness is utilized to gather the voltage of the first battery, utilize the 2nd voltage sample wire harness and the 4th voltage sample wire harness to gather the voltage of the 2nd battery, utilize the first voltage sample wire harness and the 2nd voltage sample wire harness collection for the voltage of the electric component of connect the first battery and the 2nd battery. Voltage sample wire harness is that battery cell voltage acquisition unit provides, after battery cell voltage acquisition unit collects the voltage of battery cell, the voltage of battery cell is extracted from the voltage collected, ignore the voltage of electric component simultaneously, battery management system is used to be for further processing by the voltage of the battery cell collected, such as, battery balanced.
According to embodiments of the present invention, the embodiment of a kind of method detecting cell voltage is additionally provided.
Fig. 2 is the schema of the method for detection cell voltage according to embodiments of the present invention. As shown in Figure 2, the method comprises the steps:
Step S102, the first end at the electric component for connect the first battery and the 2nd battery arranges the first voltage sample wire harness, and the 2nd end at electric component arranges the 2nd voltage sample wire harness.
Step S104, gathers the voltage of the first battery by the first voltage sample wire harness and the 3rd voltage sample wire harness, and wherein, the 3rd voltage sample wire harness is arranged on one end of the first battery of the first end away from electric component.
Step S106, gathers the voltage of the 2nd battery by the 2nd voltage sample wire harness and the 4th voltage sample wire harness, and wherein, the 4th voltage sample wire harness is arranged on one end of the 2nd battery of the 2nd end away from electric component.
Prior art is when gathering the voltage of battery cell, and the voltage U of the battery cell of collection comprises two parts, and a part is the actual voltage Vc of battery cell, and another part is the dividing potential drop V of the electric component connected between two battery cellsR��
When battery cell is in discharge condition (working order), U=Vc-VR, therefore the voltage U of the battery cell gathered is less than the actual voltage Vc of battery cell. And when battery cell is in charging state, U=Vc+VR, therefore the voltage U of the battery cell gathered is greater than the actual voltage Vc of battery cell.
Usually, electric component between battery is the electric component such as dynamic wire harness or copper nickel row. Due to the dividing potential drop V of electric componentRWith the resistance of electric component and flow through the current related of electric component, when flowing through electric current one timing of electric component, the resistance of electric component is more big, the dividing potential drop V of electric componentRMore big, that is, the resistance of electric component is more big, ignores the dividing potential drop V that electric component bringsRAnd the error gathering battery cell voltage is also more big. And in the present embodiment, due to the voltage of the voltage and the 2nd battery that gather the first battery, there is not the dividing potential drop V of electric componentR, therefore, the voltage U=Vc of the battery cell of the actual acquisition of acquisition.
Pass through the present embodiment, at the two ends of electric component, voltage sample wire harness is set, gather the voltage of battery cell voltage and electric component respectively, make the dividing potential drop not comprising electric component in the battery cell voltage collected, eliminate in the battery cell voltage of collection the dividing potential drop brought by electric component, thus achieve the technique effect of the precision improving detection battery cell voltage, and then solve the low technical problem of the precision comparison gathering battery cell voltage in prior art.
Can selection of land, first end at the electric component for connect the first battery and the 2nd battery arranges the first voltage sample wire harness, before the 2nd end of electric component arranges the 2nd voltage sample wire harness, the method for the detection cell voltage that the embodiment of the present invention provides also comprises: the resistance detecting the equivalent resistance of the electric component for connect the first battery and the 2nd battery; Judge whether the resistance of equivalent resistance is greater than or equal to preset resistive value; When judging that the resistance of equivalent resistance is greater than or equal to preset resistive value, it is determined that the first end at electric component arranges the first voltage sample wire harness, the 2nd end at electric component arranges the 2nd voltage sample wire harness.
Owing to the collection resource of battery cell voltage acquisition unit is limited, if the electric component of all series-connected cell monomers is all arranged extra voltage sample wire harness, the consumption of the resource of battery cell voltage acquisition unit can be increased. Simultaneously, when the equivalent resistance of the electric component between battery cell is less, the dividing potential drop of electric component is also less, and the dividing potential drop at electric component is little of when can ignore, it is possible to the electric component that the resistance of equivalent resistance is only greater than or equal to preset resistive value arranges extra voltage sample wire harness.
The resistance of the equivalent resistance of electric component can calculate according to resistance law, substitutes into resistance law by the resistivity of the material of the length of electric component, cross-sectional area and electric component, carries out calculating the resistance of equivalent resistance. The resistance of the equivalent resistance of electric component can also be drawn by apparatus measures such as volt ohm-milliammeters. Preset resistive value can be arranged according to practical situation, such as, is set to 20 milliohms.
Such as, in general, the equivalent resistance of the electric component of series connection two power brick is bigger, the electric component of series connection two power brick can be arranged extra voltage sample wire harness, the equivalent resistance of electric component of adjacent two battery cells in same power brick of connecting is smaller, it is possible to the electric component of adjacent two battery cells in the same power brick of series connection is not arranged extra voltage sample wire harness.
Extra voltage sample wire harness is set by the resistance of equivalent resistance being greater than or equal to the electric component of preset resistive value, it is possible to rationally utilize the resource of battery cell voltage acquisition unit efficiently, and improves the precision of detection battery cell voltage.
Can selection of land, first end at the electric component for connect the first battery and the 2nd battery arranges the first voltage sample wire harness, the 2nd end at electric component arranges the 2nd voltage sample wire harness and comprises: whether detection is provided with the first voltage sample wire harness at the first end of electric component, or the 2nd end of electric component is provided with the 2nd voltage sample wire harness; If the first end of electric component is provided with the first voltage sample wire harness, then the 2nd end at electric component arranges the 2nd voltage sample wire harness; If the 2nd end of electric component is provided with the 2nd voltage sample wire harness, then first end at electric component arranges the first voltage sample wire harness.
It is provided with voltage sample wire harness, it is assumed that two battery cells are respectively battery cell C1 and battery cell C2, are provided with voltage sample wire harness L1 between battery cell C1 and battery cell C2 between two adjacent battery cells. Assume the close together of voltage sample wire harness L1 and battery cell C1, and distant with battery cell C2, then the equivalent resistance of electric component between battery cell C1 and voltage sample wire harness L1 is less, the equivalent resistance of the electric component between battery cell C2 and voltage sample wire harness L1 is bigger, the voltage compare that can cause detecting battery cell C1 like this is accurate, and detects the voltage compare out of true of battery cell C2. According to embodiments of the present invention, voltage sample wire harness L2 is set between battery cell C2 and voltage sample wire harness L1, and the distance of battery cell C2 and voltage sample wire harness L2 is very short, the equivalent resistance of the electric component between battery cell C2 and voltage sample wire harness L2 is less, voltage sample wire harness L2 but not voltage sample wire harness L1 is used to remove the voltage gathering battery cell C2 like this, the error of the voltage of the detection battery cell C2 that the dividing potential drop that can effectively reduce electric component is brought, it is to increase accuracy of detection.
Pass through the embodiment of the present invention, detect existing which battery cell of voltage sample beam distance between two adjacent battery cells closer, between those distance two battery cells, the side near another battery cell of the battery cell that existing voltage sample wire harness is distant arranges new voltage sample wire harness, the error of the detection battery cell voltage that the dividing potential drop that can effectively reduce the electric component between adjacent two battery cell is brought, it is to increase the precision of detection battery cell voltage.
Can selection of land, first end at the electric component for connect the first battery and the 2nd battery arranges the first voltage sample wire harness, and the 2nd end at electric component arranges the 2nd voltage sample wire harness and comprises: whether detection is provided with the 5th voltage sample wire harness at the predeterminated position of electric component; If the predeterminated position at electric component is provided with the 5th voltage sample wire harness, then removes the 5th voltage sample wire harness, and the 2nd voltage sample wire harness is set at the 2nd end of electric component, and the first voltage sample wire harness is set at the first end of electric component.
The predeterminated position of electric component can be the position of the middle portion of electric component. if existing voltage sample wire harness is arranged on the position of the middle portion of the electric component of connect the first battery and the 2nd battery between the first battery with the 2nd battery, owing to there is certain distance between the voltage sample wire harness between the first battery and existing two batteries, therefore the resistance of the electric component between the first battery and this voltage sample wire harness be can not ignore, therefore the dividing potential drop of electric component causes the detection out of true of the voltage to the first battery, with reason, the dividing potential drop of the electric component between the 2nd battery and this voltage sample wire harness causes the detection out of true of the voltage to the 2nd battery, all there is relatively large deviation with actual value in the first battery gathered and the voltage of the 2nd battery.
According to embodiments of the present invention, remove existing voltage sample wire harness between the first battery and the 2nd battery, and a voltage sample wire harness is respectively set at the two ends of electric component, the new voltage sample wire harness arranged is utilized to remove the voltage gathering the first battery and the 2nd battery, efficiently avoid the resistance of the electric component between two batteries to the impact of detection battery cell voltage, thus improve the tolerance range of detection battery cell voltage.
According to embodiments of the present invention, additionally provide a kind of equipment detecting cell voltage, this equipment comprises battery voltage acquisition device, i.e. battery cell voltage acquisition unit in Fig. 1, the equipment of this detection cell voltage is for detecting the first battery and the voltage of the 2nd battery, and the first battery and the 2nd battery are connected by electric component.
Battery voltage acquisition device, at least it is provided with the first voltage sample wire harness, the 2nd voltage sample wire harness, the 3rd voltage sample wire harness and the 4th voltage sample wire harness, wherein, the first end of the first voltage sample wire harness is connected with battery voltage acquisition device, 2nd end of the first voltage sample wire harness is connected with the first end of electric component, the first end of the 2nd voltage sample wire harness is connected with battery voltage acquisition device, and the 2nd end of the 2nd voltage sample wire harness is connected with the 2nd end of electric component. Wherein, battery voltage acquisition device gathers the voltage of the first battery by the first voltage sample wire harness and the 3rd voltage sample wire harness, and wherein, the 3rd voltage sample wire harness is arranged on one end of the first battery of the first end away from electric component; Battery voltage acquisition device gathers the voltage of the 2nd battery by the 2nd voltage sample wire harness and the 4th voltage sample wire harness, and wherein, the 4th voltage sample wire harness is arranged on one end of the 2nd battery of the 2nd end away from electric component.
Pass through the present embodiment, at the two ends of electric component, voltage sample wire harness is set, gather the voltage of battery cell voltage and electric component respectively, make the dividing potential drop not comprising electric component in the battery cell voltage collected, eliminate in the battery cell voltage of collection the dividing potential drop brought by electric component, thus achieve the technique effect of the precision improving detection battery cell voltage, and then solve the low technical problem of the precision comparison gathering battery cell voltage in prior art.
According to embodiments of the present invention, a kind of device detecting cell voltage is additionally provided. The device of this detection cell voltage can perform the method for above-mentioned detection cell voltage, and the method for above-mentioned detection cell voltage can also be implemented by the device of this detection cell voltage.
Fig. 3 is the schematic diagram of the device of detection cell voltage according to embodiments of the present invention. As shown in Figure 3, this device comprises setting unit 22, first collecting unit 24 and the 2nd collecting unit 26.
Setting unit 22 is for arranging the first voltage sample wire harness at the first end of the electric component for connect the first battery and the 2nd battery, and the 2nd end at electric component arranges the 2nd voltage sample wire harness.
First collecting unit 24 for gathering the voltage of the first battery by the first voltage sample wire harness and the 3rd voltage sample wire harness, and wherein, the 3rd voltage sample wire harness is arranged on one end of the first battery of the first end away from electric component.
2nd collecting unit 26 for gathering the voltage of the 2nd battery by the 2nd voltage sample wire harness and the 4th voltage sample wire harness, and wherein, the 4th voltage sample wire harness is arranged on one end of the 2nd battery of the 2nd end away from electric component.
Prior art is when gathering the voltage of battery cell, and the voltage U of the battery cell of collection comprises two parts, and a part is the actual voltage Vc of battery cell, and another part is the dividing potential drop V of the electric component connected between two battery cellsR��
When battery cell is in discharge condition (working order), U=Vc-VR, therefore the voltage U of the battery cell gathered is less than the actual voltage Vc of battery cell. And when battery cell is in charging state, U=Vc+VR, therefore the voltage U of the battery cell gathered is greater than the actual voltage Vc of battery cell.
Usually, electric component between battery is the electric component such as dynamic wire harness or copper nickel row. Due to the dividing potential drop V of electric componentRWith the resistance of electric component and flow through the current related of electric component, when flowing through electric current one timing of electric component, the resistance of electric component is more big, the dividing potential drop V of electric componentRMore big, that is, the resistance of electric component is more big, ignores the dividing potential drop V that electric component bringsRAnd the error gathering battery cell voltage is also more big. And in the present embodiment, due to the voltage of the voltage and the 2nd battery that gather the first battery, there is not the dividing potential drop V of electric componentR, therefore, the voltage U=Vc of the battery cell of the actual acquisition of acquisition.
Pass through the present embodiment, at the two ends of electric component, voltage sample wire harness is set, gather the voltage of battery cell voltage and electric component respectively, make the dividing potential drop not comprising electric component in the battery cell voltage collected, eliminate in the battery cell voltage of collection the dividing potential drop brought by electric component, thus achieve the technique effect of the precision improving detection battery cell voltage, and then solve the low technical problem of the precision comparison gathering battery cell voltage in prior art.
Can selection of land, the device of the detection cell voltage that the embodiment of the present invention provides also comprises detecting unit, judging unit and determining unit. Detecting unit arranges the first voltage sample wire harness at the first end of electric component, before the 2nd end of electric component arranges the 2nd voltage sample wire harness, detects the resistance of the equivalent resistance of the electric component for connect the first battery and the 2nd battery. Whether judging unit is greater than or equal to preset resistive value for judging the resistance of equivalent resistance. Determining unit is used for when judging unit judges that the resistance of equivalent resistance is greater than or equal to preset resistive value, it is determined that the first end at electric component arranges the first voltage sample wire harness, and the 2nd end at electric component arranges the 2nd voltage sample wire harness.
Owing to the collection resource of battery cell voltage acquisition unit is limited, if the electric component of all series-connected cell monomers is all arranged extra voltage sample wire harness, the consumption of the resource of battery cell voltage acquisition unit can be increased. Simultaneously, when the equivalent resistance of the electric component between battery cell is less, the dividing potential drop of electric component is also less, and the dividing potential drop at electric component is little of when can ignore, it is possible to the electric component that the resistance of equivalent resistance is only greater than or equal to preset resistive value arranges extra voltage sample wire harness.
The resistance of the equivalent resistance of electric component can calculate according to resistance law, substitutes into resistance law by the resistivity of the material of the length of electric component, cross-sectional area and electric component, carries out calculating the resistance of equivalent resistance. The resistance of the equivalent resistance of electric component can also be drawn by apparatus measures such as volt ohm-milliammeters. Preset resistive value can be arranged according to practical situation, such as, is set to 20 milliohms.
Such as, in general, the equivalent resistance of the electric component of series connection two power brick is bigger, the electric component of series connection two power brick can be arranged extra voltage sample wire harness, the equivalent resistance of electric component of adjacent two battery cells in same power brick of connecting is smaller, it is possible to the electric component of adjacent two battery cells in the same power brick of series connection is not arranged extra voltage sample wire harness.
Extra voltage sample wire harness is set by the resistance of equivalent resistance being greater than or equal to the electric component of preset resistive value, it is possible to rationally utilize the resource of battery cell voltage acquisition unit efficiently, and improves the precision of detection battery cell voltage.
Can selection of land, setting unit 22 comprises the first detection sub-unit, first and arranges subelement and the 2nd and arrange subelement. Whether first detection sub-unit is provided with the first voltage sample wire harness at the first end of electric component for detecting, or the 2nd end of electric component is provided with the 2nd voltage sample wire harness. First arranges subelement for when the first end that the first detection sub-unit detects out electric component is provided with the first voltage sample wire harness, the 2nd end at electric component arranges the 2nd voltage sample wire harness. 2nd arranges subelement for when the 2nd end that the first detection sub-unit detects out electric component is provided with the 2nd voltage sample wire harness, the first end at electric component arranges the first voltage sample wire harness.
It is provided with voltage sample wire harness, it is assumed that two battery cells are respectively battery cell C1 and battery cell C2, are provided with voltage sample wire harness L1 between battery cell C1 and battery cell C2 between two adjacent battery cells. Assume the close together of voltage sample wire harness L1 and battery cell C1, and distant with battery cell C2, then the equivalent resistance of electric component between battery cell C1 and voltage sample wire harness L1 is less, the equivalent resistance of the electric component between battery cell C2 and voltage sample wire harness L1 is bigger, the voltage compare that can cause detecting battery cell C1 like this is accurate, and detects the voltage compare out of true of battery cell C2. According to embodiments of the present invention, voltage sample wire harness L2 is set between battery cell C2 and voltage sample wire harness L1, and the distance of battery cell C2 and voltage sample wire harness L2 is very short, the equivalent resistance of the electric component between battery cell C2 and voltage sample wire harness L2 is less, voltage sample wire harness L2 but not voltage sample wire harness L1 is used to remove the voltage gathering battery cell C2 like this, the error of the voltage of the detection battery cell C2 that the dividing potential drop that can effectively reduce electric component is brought, it is to increase accuracy of detection.
Pass through the embodiment of the present invention, detect existing which battery cell of voltage sample beam distance between two adjacent battery cells closer, between those distance two battery cells, the side near another battery cell of the battery cell that existing voltage sample wire harness is distant arranges new voltage sample wire harness, the error of the detection battery cell voltage that the dividing potential drop that can effectively reduce the electric component between adjacent two battery cell is brought, it is to increase the precision of detection battery cell voltage.
Can selection of land, setting unit 22 comprises the 2nd detection sub-unit and the 3rd and arranges subelement. Whether 2nd detection sub-unit is provided with the 5th voltage sample wire harness at the predeterminated position of electric component for detecting. 3rd arranges subelement for when the predeterminated position that the 2nd detection sub-unit detects out electric component is provided with the 5th voltage sample wire harness, remove the 5th voltage sample wire harness, and the 2nd voltage sample wire harness is set at the 2nd end of electric component, and the first voltage sample wire harness is set at the first end of electric component.
The predeterminated position of electric component can be the position of the middle portion of electric component. if existing voltage sample wire harness is arranged on the position of the middle portion of the electric component of connect the first battery and the 2nd battery between the first battery with the 2nd battery, owing to there is certain distance between the voltage sample wire harness between the first battery and existing two batteries, therefore the resistance of the electric component between the first battery and this voltage sample wire harness be can not ignore, therefore the dividing potential drop of electric component causes the detection out of true of the voltage to the first battery, with reason, the dividing potential drop of the electric component between the 2nd battery and this voltage sample wire harness causes the detection out of true of the voltage to the 2nd battery, all there is relatively large deviation with actual value in the first battery gathered and the voltage of the 2nd battery.
According to embodiments of the present invention, remove existing voltage sample wire harness between the first battery and the 2nd battery, and a voltage sample wire harness is respectively set at the two ends of electric component, the new voltage sample wire harness arranged is utilized to remove the voltage gathering the first battery and the 2nd battery, efficiently avoid the resistance of the electric component between two batteries to the impact of detection battery cell voltage, thus improve the tolerance range of detection battery cell voltage.
In embodiment provided by the present invention, it should be appreciated that, disclosed technology contents, realizes by other mode. Wherein, device embodiment described above is only schematic, the such as division of described unit, can be that a kind of logic function divides, actual can have other dividing mode when realizing, such as multiple unit or assembly can in conjunction with or another system can be integrated into, or some features can be ignored, or does not perform. Another point, shown or discussed coupling each other or directly coupling or communication connection can be the indirect coupling by some interfaces, unit or module or communication connection, it is possible to be electrical or other form.
The described unit illustrated as separating component or can may not be and physically separates, and the parts as unit display can be or may not be physical location, namely can be positioned at a place, or can also be distributed on multiple unit. Some or all of unit wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, it is also possible to is that the independent physics of each unit exists, it is also possible to two or more unit are in a unit integrated. Above-mentioned integrated unit both can adopt the form of hardware to realize, it is also possible to adopts the form of software functional unit to realize.
If described integrated unit realize using the form of software functional unit and as independent production marketing or when using, it is possible to be stored in a computer read/write memory medium. Based on such understanding, the technical scheme of the present invention in essence or says that part prior art contributed or all or part of of this technical scheme can embody with the form of software product, this computer software product is stored in a storage media, comprises some instructions with so that computer equipment (can be Personal Computer, server or the network equipment etc.) performs all or part of step of method described in each embodiment of the present invention. And aforesaid storage media comprises: USB flash disk, read-only storage (ROM, Read-OnlyMemory), random access memory (RAM, RandomAccessMemory), portable hard drive, magnetic disc or CD etc. various can be program code stored medium.
The above is only the preferred embodiment of the present invention; it is noted that for those skilled in the art, under the premise without departing from the principles of the invention; can also making some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. one kind is detected the method for cell voltage, it is characterised in that, comprising:
First end at the electric component for connect the first battery and the 2nd battery arranges the first voltage sample wire harness, and the 2nd end at described electric component arranges the 2nd voltage sample wire harness;
Gathered the voltage of described first battery by described first voltage sample wire harness and the 3rd voltage sample wire harness, wherein, described 3rd voltage sample wire harness is arranged on one end of described first battery of the first end away from described electric component;
Gathered the voltage of described 2nd battery by described 2nd voltage sample wire harness and the 4th voltage sample wire harness, wherein, described 4th voltage sample wire harness is arranged on one end of described 2nd battery of the 2nd end away from described electric component.
2. the method for detection cell voltage according to claim 1, it is characterized in that, first end at the electric component for connect the first battery and the 2nd battery arranges the first voltage sample wire harness, before the 2nd end of described electric component arranges the 2nd voltage sample wire harness, described method also comprises:
Detect the resistance of the equivalent resistance of the described electric component for connect described first battery and described 2nd battery;
Judge whether the resistance of described equivalent resistance is greater than or equal to preset resistive value;
When judging that the resistance of described equivalent resistance is greater than or equal to described preset resistive value, it is determined that the first end at described electric component arranges described first voltage sample wire harness, the 2nd end at described electric component arranges described 2nd voltage sample wire harness.
3. the method for detection cell voltage according to claim 1, it is characterized in that, first end at the electric component for connect the first battery and the 2nd battery arranges the first voltage sample wire harness, and the 2nd end at described electric component arranges the 2nd voltage sample wire harness and comprises:
Whether detection is provided with described first voltage sample wire harness at the first end of described electric component, or the 2nd end of described electric component is provided with described 2nd voltage sample wire harness;
If the first end of described electric component is provided with described first voltage sample wire harness, then the 2nd end at described electric component arranges described 2nd voltage sample wire harness;
If the 2nd end of described electric component is provided with described 2nd voltage sample wire harness, then first end at described electric component arranges described first voltage sample wire harness.
4. the method for detection cell voltage according to claim 1, it is characterized in that, first end at the electric component for connect the first battery and the 2nd battery arranges the first voltage sample wire harness, and the 2nd end at described electric component arranges the 2nd voltage sample wire harness and comprises:
Whether detection is provided with the 5th voltage sample wire harness at the predeterminated position of described electric component;
If the predeterminated position at described electric component is provided with described 5th voltage sample wire harness, then remove described 5th voltage sample wire harness, and described 2nd voltage sample wire harness is set at the 2nd end of described electric component, and described first voltage sample wire harness is set at the first end of described electric component.
5. one kind is detected the equipment of cell voltage, it is characterised in that, it is for detecting the first battery and the voltage of the 2nd battery, and described first battery and described 2nd battery are connected by electric component, and the equipment of described detection cell voltage comprises:
Battery voltage acquisition device, at least it is provided with the first voltage sample wire harness, the 2nd voltage sample wire harness, the 3rd voltage sample wire harness and the 4th voltage sample wire harness, wherein, the first end of described first voltage sample wire harness is connected with described battery voltage acquisition device, 2nd end of described first voltage sample wire harness is connected with the first end of described electric component, the first end of described 2nd voltage sample wire harness is connected with described battery voltage acquisition device, 2nd end of described 2nd voltage sample wire harness is connected with the 2nd end of described electric component
Wherein, described battery voltage acquisition device gathers the voltage of described first battery by described first voltage sample wire harness and the 3rd voltage sample wire harness, wherein, described 3rd voltage sample wire harness is arranged on one end of described first battery of the first end away from described electric component; Described battery voltage acquisition device gathers the voltage of described 2nd battery by described 2nd voltage sample wire harness and the 4th voltage sample wire harness, wherein, described 4th voltage sample wire harness is arranged on one end of described 2nd battery of the 2nd end away from described electric component.
6. a battery management system, it is characterised in that, comprise the equipment of detection cell voltage according to claim 5.
7. one kind is detected the device of cell voltage, it is characterised in that, comprising:
Setting unit, for arranging the first voltage sample wire harness at the first end of the electric component for connect the first battery and the 2nd battery, the 2nd end at described electric component arranges the 2nd voltage sample wire harness;
First collecting unit, for being gathered the voltage of described first battery by described first voltage sample wire harness and the 3rd voltage sample wire harness, wherein, described 3rd voltage sample wire harness is arranged on one end of described first battery of the first end away from described electric component;
2nd collecting unit, for being gathered the voltage of described 2nd battery by described 2nd voltage sample wire harness and the 4th voltage sample wire harness, wherein, described 4th voltage sample wire harness is arranged on one end of described 2nd battery of the 2nd end away from described electric component.
8. the device of detection cell voltage according to claim 7, it is characterised in that, described device also comprises:
Detecting unit, for arranging the first voltage sample wire harness at the first end of described electric component, before the 2nd end of described electric component arranges the 2nd voltage sample wire harness, detect the resistance of the equivalent resistance of the described electric component for connect described first battery and described 2nd battery;
Whether judging unit, be greater than or equal to preset resistive value for judging the resistance of described equivalent resistance;
Determining unit, for when described judging unit judges that the resistance of described equivalent resistance is greater than or equal to described preset resistive value, determining to arrange described first voltage sample wire harness at the first end of described electric component, the 2nd end at described electric component arranges described 2nd voltage sample wire harness.
9. the device of detection cell voltage according to claim 7, it is characterised in that, described setting unit comprises:
Whether first detection sub-unit, be provided with described first voltage sample wire harness at the first end of described electric component for detecting, or the 2nd end of described electric component be provided with described 2nd voltage sample wire harness;
First arranges subelement, for when the first end that described first detection sub-unit detects out described electric component is provided with described first voltage sample wire harness, the 2nd end at described electric component arranges described 2nd voltage sample wire harness;
2nd arranges subelement, for when the 2nd end that described first detection sub-unit detects out described electric component is provided with described 2nd voltage sample wire harness, the first end at described electric component arranges described first voltage sample wire harness.
10. the device of detection cell voltage according to claim 7, it is characterised in that, described setting unit comprises:
Whether 2nd detection sub-unit, be provided with the 5th voltage sample wire harness at the predeterminated position of described electric component for detecting;
3rd arranges subelement, for when the predeterminated position that described 2nd detection sub-unit detects out described electric component is provided with described 5th voltage sample wire harness, remove described 5th voltage sample wire harness, and described 2nd voltage sample wire harness is set at the 2nd end of described electric component, and described first voltage sample wire harness is set at the first end of described electric component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510998770.4A CN105620291B (en) | 2015-12-25 | 2015-12-25 | Detect method, unit and the battery management system of cell voltage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510998770.4A CN105620291B (en) | 2015-12-25 | 2015-12-25 | Detect method, unit and the battery management system of cell voltage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105620291A true CN105620291A (en) | 2016-06-01 |
| CN105620291B CN105620291B (en) | 2018-03-23 |
Family
ID=56035776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510998770.4A Active CN105620291B (en) | 2015-12-25 | 2015-12-25 | Detect method, unit and the battery management system of cell voltage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105620291B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106240375A (en) * | 2016-08-17 | 2016-12-21 | 杭州新时空电动汽车有限公司 | Vehicle-mounted Internet intelligent control system and control method thereof |
| WO2018129884A1 (en) * | 2017-01-13 | 2018-07-19 | 宁德时代新能源科技股份有限公司 | Battery equalisation and sampling method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201311484Y (en) * | 2008-11-27 | 2009-09-16 | 比亚迪股份有限公司 | Battery pack checking device |
| CN201594116U (en) * | 2009-11-30 | 2010-09-29 | 比亚迪股份有限公司 | Measuring device of battery internal resistance |
| JP2012021931A (en) * | 2010-07-16 | 2012-02-02 | Toyota Motor Corp | Abnormality detection device for battery pack |
| CN102445662A (en) * | 2010-10-13 | 2012-05-09 | 北汽福田汽车股份有限公司 | Single battery information collecting device and battery information collecting system |
| CN103454498A (en) * | 2013-08-08 | 2013-12-18 | 许继集团有限公司 | Insulation detection method of electric vehicle power battery pack |
| CN204575823U (en) * | 2014-12-31 | 2015-08-19 | 深圳市科陆电子科技股份有限公司 | A kind of circuit that can carry out voltage sample to cell any in series battery |
| CN204712888U (en) * | 2015-05-22 | 2015-10-21 | 山东聊城鲁昌科技孵化器有限公司 | A kind of batteries of electric automobile group control module |
| CN105143899A (en) * | 2013-04-19 | 2015-12-09 | 日立汽车系统株式会社 | Battery system monitoring device |
-
2015
- 2015-12-25 CN CN201510998770.4A patent/CN105620291B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201311484Y (en) * | 2008-11-27 | 2009-09-16 | 比亚迪股份有限公司 | Battery pack checking device |
| CN201594116U (en) * | 2009-11-30 | 2010-09-29 | 比亚迪股份有限公司 | Measuring device of battery internal resistance |
| JP2012021931A (en) * | 2010-07-16 | 2012-02-02 | Toyota Motor Corp | Abnormality detection device for battery pack |
| CN102445662A (en) * | 2010-10-13 | 2012-05-09 | 北汽福田汽车股份有限公司 | Single battery information collecting device and battery information collecting system |
| CN105143899A (en) * | 2013-04-19 | 2015-12-09 | 日立汽车系统株式会社 | Battery system monitoring device |
| CN103454498A (en) * | 2013-08-08 | 2013-12-18 | 许继集团有限公司 | Insulation detection method of electric vehicle power battery pack |
| CN204575823U (en) * | 2014-12-31 | 2015-08-19 | 深圳市科陆电子科技股份有限公司 | A kind of circuit that can carry out voltage sample to cell any in series battery |
| CN204712888U (en) * | 2015-05-22 | 2015-10-21 | 山东聊城鲁昌科技孵化器有限公司 | A kind of batteries of electric automobile group control module |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106240375A (en) * | 2016-08-17 | 2016-12-21 | 杭州新时空电动汽车有限公司 | Vehicle-mounted Internet intelligent control system and control method thereof |
| WO2018129884A1 (en) * | 2017-01-13 | 2018-07-19 | 宁德时代新能源科技股份有限公司 | Battery equalisation and sampling method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105620291B (en) | 2018-03-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103269096B (en) | Battery pack equilibrium method based on clustering analysis | |
| CN105548892A (en) | System, method and device of fault detection of battery system and electric vehicle | |
| CN107612071B (en) | Battery failure judgment and processing method for battery pack | |
| CN106602649A (en) | Disconnection detection circuit and disconnection detection method of battery management system | |
| CN108646183B (en) | Battery fault diagnosis method in battery pack | |
| CN205049709U (en) | Battery detecting apparatus | |
| WO2023024851A1 (en) | Battery equalization method and system | |
| CN104882914B (en) | Multi-battery cell balancing method | |
| CN104237803A (en) | Method for detecting electrical property of battery of electric vehicle on basis of battery working condition simulation | |
| CN109772753B (en) | Power battery sorting system and method | |
| CN103986205B (en) | 16 series lithium battery group multi-mode balance control methods of dynamic adaptation | |
| CN102148519A (en) | Automatic equalization method and circuit for battery pack | |
| CN104505892A (en) | Intelligent control system of charging and discharging battery pack | |
| CN103336247B (en) | A kind of electric automobile power battery group discharging detecting system and detection method thereof | |
| CN105620291A (en) | Battery voltage detecting method, equipment and device and battery management system | |
| CN116224075A (en) | Power battery monomer abnormality early warning method and device, electronic equipment and storage medium | |
| CN105093126A (en) | Battery state discrimination method based on battery management system | |
| CN103682489A (en) | Method and device for confirming reliability of power battery system | |
| CN103414217B (en) | A kind of method of battery management and device | |
| CN111474491B (en) | Satellite power supply abnormity detection method based on pattern analysis | |
| CN105225065A (en) | Based on serondary lithium battery supervisory system and the management method thereof of Electronic Health Record system | |
| CN105548907A (en) | New energy vehicle data recording method based on battery management system | |
| CN115825756B (en) | Multi-stage fault diagnosis method and system for distributed energy storage power station | |
| CN111313110A (en) | Method and system for early warning rapid decline of capacity of ternary battery by gradient utilization | |
| CN204835579U (en) | High safe and reliable's initiative equalizer circuit system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |