CN104569845A - Method and device for detecting capacity of waste power lithium battery - Google Patents
Method and device for detecting capacity of waste power lithium battery Download PDFInfo
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- CN104569845A CN104569845A CN201410855258.XA CN201410855258A CN104569845A CN 104569845 A CN104569845 A CN 104569845A CN 201410855258 A CN201410855258 A CN 201410855258A CN 104569845 A CN104569845 A CN 104569845A
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Abstract
The invention provides a method and device for detecting capacity of a waste power lithium battery. The method comprises the steps that the waste power lithium battery is charged/discharged till any battery cell reaches the full charging/empty electricity state; equalizing charge/discharge are carried out till all the battery cells reach the full charging/empty electricity state; the waste power lithium battery is charged/discharged till any battery cell reaches the empty electricity/full charging state, and the discharge/charge capacity is detected; the battery cells which do not reach the empty electricity/full charging state continue to be discharged/charged till the empty electricity/full charging state is achieved, and the discharge/charge capacity of all the battery cells in the continuing discharge/charge process is detected; the sum of the discharge/charge capacity of all the battery cells in the continuing discharge/charge process and the discharge/charge capacity of the waste power lithium battery in the discharge/charge process is determined as the capacity of the corresponding battery cell. The method and device are easy to operate and low in cost, and convenience is provided for secondary utilization of the waste power lithium battery.
Description
Technical field
The present invention relates to battery capacity detection technique field, particularly, relate to a kind of waste and old dynamic lithium battery capacity check method and device.
Background technology
Carrying out secondary utilization to dynamic lithium battery is the effective ways that electric automobile reduces battery use cost, but dynamic lithium battery secondary utilizes very risky, and state of the art when mainly dynamic lithium battery secondary utilizes is difficult to hold.Battery capacity is the important technological parameters of battery, and the volume test of waste and old dynamic lithium battery is a difficult problem always, and dynamic lithium battery is made up of multiple single lithium battery, has at present to the common method that waste and old dynamic lithium battery carries out volume test:
1, waste and old dynamic lithium battery to be detected is charged normal, after having charged normal, carry out equalizaing charge again, after equalizaing charge completes, carry out battery capacity detection.The battery capacity that this method detects is dynamic lithium battery capacity as a whole, and the single lithium battery minimum by electric battery inner capacities determines, can not reflect the true value of waste and old dynamic lithium battery.
2, waste and old dynamic lithium battery is disassembled into single lithium battery, capacity check is carried out to single lithium battery.This method needs whole electric battery to disassemble into multiple single lithium battery, then distinguishes test capacity, and operating difficulties, cost are higher, reduce the true value of waste and old dynamic lithium battery.
To sum up, existing capacity test method can not reflect the true value of waste and old dynamic lithium battery, is unfavorable for utilizing the secondary of waste and old dynamic lithium battery.
Summary of the invention
The fundamental purpose of the embodiment of the present invention is to provide a kind of waste and old dynamic lithium battery capacity check method and device, for when not disassembling dynamic lithium battery, detects the true capacity of each single lithium battery.
To achieve these goals, the invention provides a kind of waste and old dynamic lithium battery capacity check method, comprising:
Steps A 1, charges to waste and old dynamic lithium battery to be detected, until arbitrary single lithium battery reaches fully charged state in this waste and old dynamic lithium battery to be detected;
Steps A 2, carries out equalizaing charge, until all single lithium battery all reach fully charged state to described waste and old dynamic lithium battery to be detected;
Steps A 3, makes described waste and old power lithium battery tank discharge to be detected, until arbitrary single lithium battery reaches sky electricity condition, detects the described discharge capacity of waste and old dynamic lithium battery in discharge process to be detected;
Steps A 4, makes each single lithium battery not reaching sky electricity condition in described waste and old dynamic lithium battery to be detected continue electric discharge, until each single lithium battery reaches sky electricity condition, detects described each single lithium battery and is continuing the discharge capacity in discharge process;
Steps A 5, by each single lithium battery in the discharge capacity continued in discharge process and the discharge capacity sum of described waste and old dynamic lithium battery to be detected in discharge process, is defined as the capacity of corresponding single lithium battery;
Or described method comprises:
Step B1, discharges to waste and old dynamic lithium battery to be detected, until arbitrary single lithium battery reaches sky electricity condition in this waste and old dynamic lithium battery to be detected;
Step B2, carries out balanced discharge, until all single lithium battery reach sky electricity condition to described waste and old dynamic lithium battery to be detected;
Step B3, to described waste and old dynamic lithium battery charging to be detected, until arbitrary single lithium battery reaches fully charged state, detects the described charging capacity of waste and old dynamic lithium battery in charging process to be detected;
Step B4, continues charging to each single lithium battery not reaching fully charged state in described waste and old dynamic lithium battery to be detected, until each single lithium battery reaches fully charged state, detects described each single lithium battery and is continuing the charging capacity in charging process;
Step B5, by each single lithium battery in the charging capacity continued in charging process and the charging capacity sum of described waste and old dynamic lithium battery to be detected in charging process, is defined as the capacity of corresponding single lithium battery.
Accordingly, the present invention also provides a kind of waste and old dynamic lithium battery capacity checking apparatus, comprising:
Monitoring means, for the voltage and current of each single lithium battery in waste and old dynamic lithium battery to be detected described in Real-Time Monitoring;
Overall charhing unit, for charging to waste and old dynamic lithium battery to be detected;
Charge equalization unit, for carrying out equalizaing charge to described waste and old dynamic lithium battery to be detected;
First discharge measuring unit, for discharging to described waste and old dynamic lithium battery to be detected, and detects the discharge capacity of described waste and old dynamic lithium battery to be detected;
Some second discharge measuring unit, each single lithium battery one_to_one corresponding with described waste and old dynamic lithium battery to be detected, discharges for the single lithium battery connected it, and detects the discharge capacity of the single lithium battery that it connects;
First control module, for the voltage and current from each single lithium battery described in described monitoring means Real-time Obtaining, and judges whether each single lithium battery described reaches fully charged state or empty electricity condition accordingly;
Described first control module also for:
Start described overall charhing unit, until arbitrary single lithium battery reaches fully charged state in described waste and old dynamic lithium battery to be detected, close described overall charhing unit; Start described charge equalization unit, until all single lithium battery reach fully charged state, close described charge equalization unit; Start described first discharge measuring unit, until arbitrary single lithium battery reaches sky electricity condition, close described first discharge measuring unit and obtain the discharge capacity that described first discharge measuring unit inspection arrives; Start the second discharge measuring unit be connected with each single lithium battery not reaching sky electricity condition in described waste and old dynamic lithium battery to be detected, when each single lithium battery reaches sky electricity condition, close the second discharge measuring unit of this single lithium battery connection and obtain its discharge capacity detected; The second discharge measuring unit inspection that each single lithium battery is connected to discharge capacity and the discharge capacity sum that arrives of described first discharge measuring unit inspection, be defined as the capacity of corresponding single lithium battery;
And,
Overall discharge cell, for discharging to waste and old dynamic lithium battery to be detected;
Balanced discharge unit, for carrying out balanced discharge to described waste and old dynamic lithium battery to be detected;
First charging measuring unit, for charging to described waste and old dynamic lithium battery to be detected, and detects the charging capacity of described waste and old dynamic lithium battery to be detected;
Some second charging measuring units, each single lithium battery one_to_one corresponding with described waste and old dynamic lithium battery to be detected, charges for the single lithium battery connected it, and detects the charging capacity of the single lithium battery that it connects;
Second control module, for the voltage and current from each single lithium battery described in described monitoring means Real-time Obtaining, and judges whether each single lithium battery described reaches fully charged state or empty electricity condition accordingly;
Described second control module also for:
Start described overall discharge cell, until arbitrary single lithium battery reaches sky electricity condition in described waste and old dynamic lithium battery to be detected, close described overall discharge cell; Start described balanced discharge unit, until all single lithium battery reach sky electricity condition, close described balanced discharge unit; Start described first charging measuring unit, until arbitrary single lithium battery reaches fully charged state, close described first charging measuring unit and obtain described first charging capacity that detects of charging measuring unit; Start second charging measuring unit of being connected with each single lithium battery not reaching fully charged state in described waste and old dynamic lithium battery to be detected, when each single lithium battery reaches fully charged state, close the second charging measuring unit of this single lithium battery connection and obtain its charging capacity detected; The second charging capacity and described first that detects of charging measuring unit each single lithium battery connected is charged the charging capacity sum that measuring unit detects, is defined as the capacity of corresponding single lithium battery.
By means of technique scheme, the present invention can when not disassembling dynamic lithium battery, detect the true capacity obtaining its each single lithium battery, compared to prior art, the present invention is simple to operate, cost is low, secondary for waste and old dynamic lithium battery utilizes and provides conveniently, is conducive to promoting battery environmental protection and utilizes.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, 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.
Fig. 1 is the schematic flow sheet of a kind of waste and old dynamic lithium battery capacity check method provided by the invention;
Fig. 2 is the schematic flow sheet of another kind provided by the invention waste and old dynamic lithium battery capacity check method;
Fig. 3 is the structured flowchart of a kind of waste and old dynamic lithium battery capacity checking apparatus provided by the invention;
Fig. 4 is the structured flowchart of the waste and old dynamic lithium battery capacity checking apparatus of another kind provided by the invention;
Fig. 5 is the structured flowchart of another waste and old dynamic lithium battery capacity checking apparatus provided by the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Art technology technician know, embodiments of the present invention can be implemented as a kind of system, device, equipment, method or computer program.Therefore, the disclosure can be implemented as following form, that is: hardware, completely software (comprising firmware, resident software, microcode etc.) completely, or the form that hardware and software combines.
In this article, it will be appreciated that, involved term " fully charged state " is for preventing single lithium battery overcharge from arranging, when a certain single lithium battery reaches the charge cutoff voltage of its correspondence or when reaching the charge cutoff electric current of its correspondence, this single lithium battery reaches its " fully charged state "; Similar, involved term " empty electricity condition " is for preventing single lithium battery overdischarge from arranging, when a certain single lithium battery reaches the discharge cut-off voltage of its correspondence or when reaching the electric discharge cut-off current of its correspondence, this single lithium battery reaches its " empty electricity condition ".In addition, any number of elements in accompanying drawing is all unrestricted for example, and any name is all only for distinguishing, and does not have any limitation.
As shown in Figure 1, the invention provides a kind of waste and old dynamic lithium battery capacity check method, the method comprises:
Step S11, charges to waste and old dynamic lithium battery to be detected, until arbitrary single lithium battery reaches fully charged state in this waste and old dynamic lithium battery to be detected.
Concrete, this step is charge to the entirety of waste and old dynamic lithium battery, in order to not impact the performance of waste and old dynamic lithium battery, to obtain real battery capacity, the present invention can N (0 < N < 1) doubly to the charging current of the nominal capacity of waste and old dynamic lithium battery, waste and old dynamic lithium battery to be detected is charged.
During concrete enforcement, need the voltage data and the current data that detect each single lithium battery in real time, when the voltage of a certain single lithium battery reaches charge cutoff voltage or its electric current reaches charge cutoff electric current, this single lithium battery reaches fully charged state, now stops charging to the entirety of waste and old dynamic lithium battery.
Step S12, carries out equalizaing charge to waste and old dynamic lithium battery to be detected, until all single lithium battery all reach fully charged state.
Consider that each single lithium battery of waste and old dynamic lithium battery may draw charging current bigger and temporarily show as fully charged state, reality does not reach fully charged state, for avoiding making the final battery capacity calculated true not because of the appearance of this situation, preferably, after execution step S12, before execution step S13, also perform following verification step:
Make waste and old dynamic lithium battery to be detected leave standstill a setting-up time (as 10 minutes), then detect all single lithium battery in waste and old dynamic lithium battery to be detected and whether all reach fully charged state; If also not all single lithium battery is all fully charged states after leaving standstill a period of time, waste and old dynamic lithium battery namely to be detected does not reach its charge cutoff voltage or electric current, then reduce charging current (namely to upgrade N, N after renewal is less than the N before renewal), and return perform step S11 again waste and old dynamic lithium battery is charged, and again perform step S12 carry out equalizaing charge; If all single lithium battery are all still fully charged state after leaving standstill a period of time, then this waste and old dynamic lithium battery to be detected has reached its charge cutoff voltage or electric current really, now continues to perform step S13.
Such as, be with the charging current of 0.2 multiplying power in nominal capacity, waste and old dynamic lithium battery is charged for the first time, after leaving standstill a period of time, if desired again charge, then should reduce charging current, can 0.1 multiplying power in the charging current of nominal capacity, it be charged.
Step S13, makes waste and old power lithium battery tank discharge to be detected, until arbitrary single lithium battery reaches sky electricity condition, detects the discharge capacity of waste and old dynamic lithium battery in discharge process to be detected.
This step is discharged to the entirety of waste and old dynamic lithium battery, and in the process, first the minimum single lithium battery of capacity should reach sky electricity condition, and namely now detected discharge capacity equals the battery capacity of the minimum single lithium battery of this capacity.
Step S14, makes each single lithium battery not reaching sky electricity condition in waste and old dynamic lithium battery to be detected continue electric discharge, until each single lithium battery reaches sky electricity condition, detects each single lithium battery and is continuing the discharge capacity in discharge process.
Concrete, in the overall discharge process of waste and old dynamic lithium battery, first the minimum single lithium battery of capacity should reach sky electricity condition, and remaining single lithium battery does not also reach sky electricity condition, the present invention can adopt each single lithium battery of battery voltage sampling line to continue electric discharge, and records the discharge capacity in each single lithium battery continuation discharge process.Except adopting battery voltage sampling line to continue except electric discharge, concrete when implementing of the present invention, can also adopt and be connected to the detection line being connected in series line between single lithium battery specially and carry out continuations and discharge.
Step S15, by each single lithium battery in the discharge capacity continued in discharge process and waste and old dynamic lithium battery to be detected discharge capacity sum in discharge process, is defined as the capacity of corresponding single lithium battery.
Concrete, each single lithium battery is in the overall discharge process of waste and old dynamic lithium battery, first a part of electric energy is lost, this part electric energy equals the battery capacity of the minimum single lithium battery of capacity, and in continuation discharge process afterwards, each single lithium battery continues to lose electric energy, until ignore state, this two parts electric energy sum is the battery capacity of single lithium battery, and these data can reflect the battery capacity of single lithium battery truly.
Compared to existing volume test technology, said method does not need to disassemble waste and old dynamic lithium battery, and simple to operate, cost is low, and the secondary for waste and old dynamic lithium battery utilizes and provides conveniently, is conducive to promoting battery environmental protection and utilizes.
As shown in Figure 2, the present invention also provides another kind of waste and old dynamic lithium battery capacity check method, and the method comprises:
Step S21, discharges to waste and old dynamic lithium battery to be detected, until arbitrary single lithium battery reaches sky electricity condition in this waste and old dynamic lithium battery to be detected.
Concrete, this step is discharge to the entirety of waste and old dynamic lithium battery, in order to not impact the performance of waste and old dynamic lithium battery, to obtain real battery capacity, the present invention can M (0 < M < 1) doubly to the discharge current of the nominal capacity of waste and old dynamic lithium battery, waste and old dynamic lithium battery to be detected is discharged.
During concrete enforcement, need the voltage data and the current data that detect each single lithium battery in real time, when the voltage of a certain single lithium battery reaches discharge cut-off voltage or its electric current reaches electric discharge cut-off current, this single lithium battery reaches sky electricity condition, now stops discharging to the entirety of waste and old dynamic lithium battery.
Step S22, carries out balanced discharge to waste and old dynamic lithium battery to be detected, until all single lithium battery reach sky electricity condition.
Consider that each single lithium battery of waste and old dynamic lithium battery may draw discharge current bigger and temporarily show as sky electricity condition, reality does not reach sky electricity condition, for avoiding making the final battery capacity calculated true not because of the appearance of this situation, preferably, after execution step S22, before execution step S23, also perform following verification step:
Make waste and old dynamic lithium battery to be detected leave standstill a setting-up time (as 10 minutes), then detect all single lithium battery in waste and old dynamic lithium battery to be detected and whether all reach sky electricity condition; If also not all single lithium battery is sky electricity condition after leaving standstill a period of time, the global voltage of waste and old dynamic lithium battery is gone up, then reduce discharge current (namely to upgrade M, M after renewal is less than the M before renewal), and return execution step S21 again to waste and old power lithium battery tank discharge, and execution step S22 carries out balanced discharge again; If all single lithium battery are all still empty electricity condition after leaving standstill a period of time, then this waste and old dynamic lithium battery to be detected has reached its discharge cut-off voltage or electric current really, now continues to perform step S23.
Such as, be with the discharge current of 0.2 multiplying power in nominal capacity, waste and old dynamic lithium battery is discharged for the first time, after leaving standstill a period of time, if desired again discharge, then should reduce discharge current, can 0.1 multiplying power in the discharge current of nominal capacity, it be discharged.
Step S23, to waste and old dynamic lithium battery charging to be detected, until arbitrary single lithium battery reaches fully charged state, detects the charging capacity of waste and old dynamic lithium battery in charging process to be detected.
This step is charged to the entirety of waste and old dynamic lithium battery, and in the process, first the minimum single lithium battery of capacity should reach fully charged state, and namely now detected charging capacity equals the battery capacity of the minimum single lithium battery of this capacity.
Step S24, continues charging to each single lithium battery not reaching fully charged state in waste and old dynamic lithium battery to be detected, until each single lithium battery reaches fully charged state, detects each single lithium battery and is continuing the charging capacity in charging process.
Concrete, in the overall charging process of waste and old dynamic lithium battery, first the minimum single lithium battery of capacity should reach fully charged state, and remaining single lithium battery does not also reach fully charged state, the present invention can adopt battery voltage sampling line to continue charging to each single lithium battery, and records the charging capacity in each single lithium battery continuation charging process.Except adopting battery voltage sampling line to continue except charging, concrete when implementing of the present invention, can also adopt and be connected to the detection line being connected in series line between single lithium battery specially and carry out continuations and charge.
Step S25, by each single lithium battery in the charging capacity continued in charging process and waste and old dynamic lithium battery to be detected charging capacity sum in charging process, is defined as the capacity of corresponding single lithium battery.
Concrete, each single lithium battery is in the overall charging process of waste and old dynamic lithium battery, first a part of electric energy is supplemented, this part electric energy equals the battery capacity of the minimum single lithium battery of capacity, and in continuation charging process afterwards, each single lithium battery continues electric energy supplement, until fully charged state, this two parts electric energy sum is the battery capacity of single lithium battery, and these data can reflect the battery capacity of single lithium battery truly.
Method shown in Fig. 1 is applicable to the waste and old dynamic lithium battery with charge balancing function, belongs to direct capacity check; Method shown in Fig. 2 is applicable to the waste and old dynamic lithium battery with equalization discharge function, belong to indirectly capacity check, because the capacity that the method detects is battery charge capacity, instead of discharge capacity of the cell (i.e. battery capacity), generally, substantially quite (i.e. efficiency for charge-discharge coefficient close to or equal 1), therefore, the two can directly do equal treating for the battery charge capacity of lithium battery and discharge capacity of the cell.
Consider the battery charge capacity of in particular cases lithium battery and discharge capacity of the cell may not quite (namely efficiency for charge-discharge coefficient not close to or equal 1), in order to ensure obtaining real battery capacity, the step S25 of method shown in Fig. 2 is specially: calculate each single lithium battery in the charging capacity continued in charging process and the charging capacity sum of waste and old dynamic lithium battery in charging process, obtain the charging capacity of corresponding single lithium battery; By the product of the charging capacity of corresponding single lithium battery and efficiency for charge-discharge coefficient, be defined as the capacity of corresponding single lithium battery.
Compared to existing volume test technology, said method does not need to disassemble waste and old dynamic lithium battery, and simple to operate, cost is low, and the secondary for waste and old dynamic lithium battery utilizes and provides conveniently, is conducive to promoting battery environmental protection and utilizes.
As shown in Figure 3, the present invention also provides a kind of waste and old dynamic lithium battery capacity checking apparatus, and this device specifically comprises:
Overall charhing unit 31, for charging to waste and old dynamic lithium battery to be detected;
Charge equalization unit 32, for carrying out equalizaing charge to waste and old dynamic lithium battery to be detected;
First discharge measuring unit 33, for discharging to waste and old dynamic lithium battery to be detected, and detects the discharge capacity of waste and old dynamic lithium battery to be detected;
Some second discharge measuring unit 34, each single lithium battery one_to_one corresponding with waste and old dynamic lithium battery to be detected, discharges for the single lithium battery connected it, and detects the discharge capacity of the single lithium battery that it connects;
First monitoring means 35, for the voltage and current of each single lithium battery in the waste and old dynamic lithium battery that Real-Time Monitoring is to be detected;
First control module 36, for the voltage and current from first each single lithium battery of monitoring means 35 Real-time Obtaining, and judges whether each single lithium battery reaches fully charged state or empty electricity condition accordingly;
First control module 36 also for:
Start overall charhing unit 31, until arbitrary single lithium battery reaches fully charged state in waste and old dynamic lithium battery to be detected, close overall charhing unit 31; Start charge equalization unit 32, until all single lithium battery reach fully charged state, close charge equalization unit 32; When waste and old dynamic lithium battery to be detected leaves standstill after a setting-up time, start the first discharge measuring unit 33, until arbitrary single lithium battery reaches sky electricity condition, close the first discharge measuring unit 33 and obtain the discharge capacity that the first discharge measuring unit 33 detects; Start the second discharge measuring unit 34 be connected with each single lithium battery not reaching sky electricity condition in waste and old dynamic lithium battery to be detected, when each single lithium battery reaches sky electricity condition, close the second discharge measuring unit 34 of this single lithium battery connection and obtain its discharge capacity detected; The discharge capacity that the second discharge measuring unit 34 each single lithium battery connected detects and the discharge capacity sum that the first discharge measuring unit 33 detects, be defined as the capacity of corresponding single lithium battery.
Waste and old dynamic lithium battery capacity checking apparatus shown in Fig. 3 realizes based on identical invention thought with the waste and old dynamic lithium battery capacity check method shown in Fig. 1, its embodiment can refer to the aforementioned introduction to the waste and old dynamic lithium battery capacity check method shown in Fig. 1, repeats no more herein.
As shown in Figure 4, the present invention also provides another kind of waste and old dynamic lithium battery capacity checking apparatus, and this device specifically comprises:
Overall discharge cell 41, for discharging to waste and old dynamic lithium battery to be detected;
Balanced discharge unit 42, for carrying out balanced discharge to waste and old dynamic lithium battery to be detected;
First charging measuring unit 43, for charging to waste and old dynamic lithium battery to be detected, and detects the charging capacity of waste and old dynamic lithium battery to be detected;
Some second charging measuring units 44, each single lithium battery one_to_one corresponding with waste and old dynamic lithium battery to be detected, charges for the single lithium battery connected it, and detects the charging capacity of the single lithium battery that it connects;
Second monitoring means 45, for the voltage and current of each single lithium battery in the waste and old dynamic lithium battery that Real-Time Monitoring is to be detected;
Second control module 46, for the voltage and current from second each single lithium battery of monitoring means 45 Real-time Obtaining, and judges whether each single lithium battery reaches fully charged state or empty electricity condition accordingly;
Second control module 46 also for:
Start overall discharge cell 41, until arbitrary single lithium battery reaches sky electricity condition in waste and old dynamic lithium battery to be detected, close overall discharge cell 41; Start balanced discharge unit 42, until all single lithium battery reach sky electricity condition, close balanced discharge unit 42; After waste and old dynamic lithium battery to be detected leaves standstill another setting-up time, start the first charging measuring unit 43, until arbitrary single lithium battery reaches fully charged state, close the first charging measuring unit 43 and obtain the charging capacity that the first charging measuring unit 43 detects; Start second charging measuring unit 44 of being connected with each single lithium battery not reaching fully charged state in waste and old dynamic lithium battery to be detected, when each single lithium battery reaches fully charged state, close the second charging measuring unit 44 of this single lithium battery connection and obtain its charging capacity detected; The second charging capacity and first that detects of charging measuring unit 44 each single lithium battery connected is charged the charging capacity sum that measuring unit 43 detects, is defined as the capacity of corresponding single lithium battery.
Waste and old dynamic lithium battery capacity checking apparatus shown in Fig. 4 realizes based on identical invention thought with the waste and old dynamic lithium battery capacity check method shown in Fig. 2, its embodiment can refer to the aforementioned introduction to the waste and old dynamic lithium battery capacity check method shown in Fig. 2, repeats no more herein.
As shown in Figure 5, the present invention also provides a kind of waste and old dynamic lithium battery capacity checking apparatus, and this device is integrated with the unit shown in the unit shown in Fig. 3 and Fig. 4, specifically comprises:
Overall charhing unit 50, for charging to waste and old dynamic lithium battery to be detected;
Charge equalization unit 51, for carrying out equalizaing charge to waste and old dynamic lithium battery to be detected;
First discharge measuring unit 52, for discharging to waste and old dynamic lithium battery to be detected, and detects the discharge capacity of waste and old dynamic lithium battery to be detected;
Some second discharge measuring unit 53, each single lithium battery one_to_one corresponding with waste and old dynamic lithium battery to be detected, discharges for the single lithium battery connected it, and detects the discharge capacity of the single lithium battery that it connects;
Overall discharge cell 54, for discharging to waste and old dynamic lithium battery to be detected;
Balanced discharge unit 55, for carrying out balanced discharge to waste and old dynamic lithium battery to be detected;
First charging measuring unit 56, for charging to waste and old dynamic lithium battery to be detected, and detects the charging capacity of waste and old dynamic lithium battery to be detected;
Some second charging measuring units 57, each single lithium battery one_to_one corresponding with waste and old dynamic lithium battery to be detected, charges for the single lithium battery connected it, and detects the charging capacity of the single lithium battery that it connects;
Monitoring means 58, for the voltage and current of each single lithium battery in the waste and old dynamic lithium battery that Real-Time Monitoring is to be detected;
First control module 591, for the voltage and current from each single lithium battery of monitoring means 58 Real-time Obtaining, and judges whether each single lithium battery reaches fully charged state or empty electricity condition accordingly;
First control module 591 also for:
Start overall charhing unit 50, until arbitrary single lithium battery reaches fully charged state in waste and old dynamic lithium battery to be detected, close overall charhing unit 50; Start charge equalization unit 51, until all single lithium battery reach fully charged state, close charge equalization unit 51; When waste and old dynamic lithium battery to be detected leaves standstill after a setting-up time, start the first discharge measuring unit 52, until arbitrary single lithium battery reaches sky electricity condition, close the first discharge measuring unit 52 and obtain the discharge capacity that the first discharge measuring unit 52 detects; Start the second discharge measuring unit 53 be connected with each single lithium battery not reaching sky electricity condition in waste and old dynamic lithium battery to be detected, when each single lithium battery reaches sky electricity condition, close the second discharge measuring unit 53 of this single lithium battery connection and obtain its discharge capacity detected; The discharge capacity that the second discharge measuring unit 53 each single lithium battery connected detects and the discharge capacity sum that the first discharge measuring unit 52 detects, be defined as the capacity of corresponding single lithium battery.
Second control module 592, for the voltage and current from each single lithium battery of monitoring means 58 Real-time Obtaining, and judges whether each single lithium battery reaches fully charged state or empty electricity condition accordingly;
Second control module 592 also for:
Start overall discharge cell 54, until arbitrary single lithium battery reaches sky electricity condition in waste and old dynamic lithium battery to be detected, close overall discharge cell 54; Start balanced discharge unit 55, until all single lithium battery reach sky electricity condition, close balanced discharge unit 55; After waste and old dynamic lithium battery to be detected leaves standstill another setting-up time, start the first charging measuring unit 56, until arbitrary single lithium battery reaches fully charged state, close the first charging measuring unit 56 and obtain the charging capacity that the first charging measuring unit 56 detects; Start second charging measuring unit 57 of being connected with each single lithium battery not reaching fully charged state in waste and old dynamic lithium battery to be detected, when each single lithium battery reaches fully charged state, close the second charging measuring unit 57 of this single lithium battery connection and obtain its charging capacity detected; The second charging capacity and first that detects of charging measuring unit 57 each single lithium battery connected is charged the charging capacity sum that measuring unit 56 detects, is defined as the capacity of corresponding single lithium battery.
Compared to existing volume test technology, said method does not need to disassemble waste and old dynamic lithium battery, and simple to operate, cost is low, and the secondary for waste and old dynamic lithium battery utilizes and provides conveniently, is conducive to promoting battery environmental protection and utilizes.
Above-described specific embodiment; object of the present invention, technical scheme and beneficial effect are further described; be understood that; the foregoing is only specific embodiments of the invention; the protection domain be not intended to limit the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Those skilled in the art can also recognize the various illustrative components, blocks (illustrativelogical block) that the embodiment of the present invention is listed, unit, and step can pass through electronic hardware, computer software, or both combinations realize.For the replaceability (interchangeability) of clear displaying hardware and software, above-mentioned various illustrative components (illustrativecomponents), unit and step have universally described their function.Such function is the designing requirement realizing depending on specific application and whole system by hardware or software.Those skilled in the art for often kind of specifically application, can use the function described in the realization of various method, but this realization can should not be understood to the scope exceeding embodiment of the present invention protection.
Various illustrative logical block described in the embodiment of the present invention, or unit, or device can pass through general processor, digital signal processor, special IC (ASIC), field programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or the design of above-mentioned any combination realizes or operates described function.General processor can be microprocessor, and alternatively, this general processor also can be any traditional processor, controller, microcontroller or state machine.Processor also can be realized by the combination of calculation element, such as digital signal processor and microprocessor, multi-microprocessor, and a Digital Signal Processor Core combined by one or more microprocessor, or other similar configuration any realizes.
The software module that method described in the embodiment of the present invention or the step of algorithm directly can embed hardware, processor performs or the combination of both.Software module can be stored in the storage medium of other arbitrary form in RAM storer, flash memory, ROM storer, eprom memory, eeprom memory, register, hard disk, moveable magnetic disc, CD-ROM or this area.Exemplarily, storage medium can be connected with processor, with make processor can from storage medium reading information, and write information can be deposited to storage medium.Alternatively, storage medium can also be integrated in processor.Processor and storage medium can be arranged in ASIC, and ASIC can be arranged in user terminal.Alternatively, processor and storage medium also can be arranged in the different parts in user terminal.
In one or more exemplary design, the above-mentioned functions described by the embodiment of the present invention can realize in the combination in any of hardware, software, firmware or this three.If realized in software, these functions can store on the medium with computer-readable, or are transmitted on the medium of computer-readable with one or more instruction or code form.Computer readable medium comprises computer storage medium and is convenient to make to allow computer program transfer to the telecommunication media in other place from a place.Storage medium can be that any general or special computer can the useable medium of access.Such as, such computer readable media can include but not limited to RAM, ROM, EEPROM, CD-ROM or other optical disc storage, disk storage or other magnetic storage device, or other anyly may be used for carrying or store the medium that can be read the program code of form with instruction or data structure and other by general or special computer or general or special processor.In addition, any connection can be properly termed computer readable medium, such as, if software is by a concentric cable, fiber optic cables, twisted-pair feeder, Digital Subscriber Line (DSL) or being also comprised in defined computer readable medium with wireless way for transmittings such as such as infrared, wireless and microwaves from a web-site, server or other remote resource.Described video disc (disk) and disk (disc) comprise Zip disk, radium-shine dish, CD, DVD, floppy disk and Blu-ray Disc, and disk is usually with magnetic duplication data, and video disc carries out optical reproduction data with laser usually.Above-mentioned combination also can be included in computer readable medium.
Claims (9)
1. a waste and old dynamic lithium battery capacity check method, it is characterized in that, described method comprises:
Steps A 1, charges to waste and old dynamic lithium battery to be detected, until arbitrary single lithium battery reaches fully charged state in this waste and old dynamic lithium battery to be detected;
Steps A 2, carries out equalizaing charge, until all single lithium battery all reach fully charged state to described waste and old dynamic lithium battery to be detected;
Steps A 3, makes described waste and old power lithium battery tank discharge to be detected, until arbitrary single lithium battery reaches sky electricity condition, detects the described discharge capacity of waste and old dynamic lithium battery in discharge process to be detected;
Steps A 4, makes each single lithium battery not reaching sky electricity condition in described waste and old dynamic lithium battery to be detected continue electric discharge, until each single lithium battery reaches sky electricity condition, detects described each single lithium battery and is continuing the discharge capacity in discharge process;
Steps A 5, by each single lithium battery in the discharge capacity continued in discharge process and the discharge capacity sum of described waste and old dynamic lithium battery to be detected in discharge process, is defined as the capacity of corresponding single lithium battery;
Or described method comprises:
Step B1, discharges to waste and old dynamic lithium battery to be detected, until arbitrary single lithium battery reaches sky electricity condition in this waste and old dynamic lithium battery to be detected;
Step B2, carries out balanced discharge, until all single lithium battery reach sky electricity condition to described waste and old dynamic lithium battery to be detected;
Step B3, to described waste and old dynamic lithium battery charging to be detected, until arbitrary single lithium battery reaches fully charged state, detects the described charging capacity of waste and old dynamic lithium battery in charging process to be detected;
Step B4, continues charging to each single lithium battery not reaching fully charged state in described waste and old dynamic lithium battery to be detected, until each single lithium battery reaches fully charged state, detects described each single lithium battery and is continuing the charging capacity in charging process;
Step B5, by each single lithium battery in the charging capacity continued in charging process and the charging capacity sum of described waste and old dynamic lithium battery to be detected in charging process, is defined as the capacity of corresponding single lithium battery.
2. waste and old dynamic lithium battery capacity check method according to claim 1, it is characterized in that, described steps A 1 is charged to waste and old dynamic lithium battery to be detected, comprise: with N doubly to the electric current of the nominal capacity of described waste and old dynamic lithium battery to be detected, described waste and old dynamic lithium battery to be detected is charged, wherein 0 < N < 1.
3. waste and old dynamic lithium battery capacity check method according to claim 2, is characterized in that, between described steps A 2 and steps A 3, also comprise:
Make described waste and old dynamic lithium battery to be detected leave standstill a setting-up time, then detect all single lithium battery in described waste and old dynamic lithium battery to be detected and whether all reach fully charged state; If not, then upgrade N, and return execution steps A 1, wherein, the N after renewal is less than the N before renewal; If so, then continue to perform steps A 3.
4. waste and old dynamic lithium battery capacity check method according to claim 1, it is characterized in that, described steps A 4 makes all the other each single lithium battery not reaching sky electricity condition in described waste and old dynamic lithium battery to be detected continue electric discharge, comprising: adopt battery voltage sampling line to continue electric discharge to all the other each single lithium battery not reaching sky electricity condition in described waste and old dynamic lithium battery to be detected.
5. waste and old dynamic lithium battery capacity check method according to claim 1, it is characterized in that, described step B1 discharges to waste and old dynamic lithium battery to be detected, comprise: with M doubly to the electric current of the nominal capacity of described waste and old dynamic lithium battery to be detected, described waste and old dynamic lithium battery to be detected is discharged, wherein 0 < M < 1.
6. waste and old dynamic lithium battery capacity check method according to claim 5, is characterized in that, between described step B2 and step B3, also comprise:
Make described waste and old dynamic lithium battery to be detected leave standstill a setting-up time, then detect all single lithium battery in described waste and old dynamic lithium battery to be detected and whether all reach sky electricity condition; If not, then upgrade M, and return step B1, wherein, the M after renewal is less than the M before renewal; If so, then continue to perform step B3.
7. waste and old dynamic lithium battery capacity check method according to claim 1, it is characterized in that, described step B4 continues charging to all the other each single lithium battery not reaching fully charged state in described waste and old dynamic lithium battery to be detected, comprising: adopt battery voltage sampling line to continue charging to all the other each single lithium battery not reaching fully charged state in described waste and old dynamic lithium battery to be detected.
8. waste and old dynamic lithium battery capacity check method according to claim 1, it is characterized in that, described step B5 by each single lithium battery in the charging capacity continued in charging process and the charging capacity sum of described waste and old dynamic lithium battery to be detected in charging process, be defined as the capacity of corresponding single lithium battery, comprise:
Calculate each single lithium battery in the charging capacity continued in charging process and the charging capacity sum of described waste and old dynamic lithium battery to be detected in charging process, obtain the charging capacity of corresponding single lithium battery;
By the charging capacity of described corresponding single lithium battery and the product of efficiency for charge-discharge coefficient, be defined as the capacity of corresponding single lithium battery.
9. a waste and old dynamic lithium battery capacity checking apparatus, is characterized in that, described device comprises:
Monitoring means, for the voltage and current of each single lithium battery in waste and old dynamic lithium battery to be detected described in Real-Time Monitoring;
Overall charhing unit, for charging to waste and old dynamic lithium battery to be detected;
Charge equalization unit, for carrying out equalizaing charge to described waste and old dynamic lithium battery to be detected;
First discharge measuring unit, for discharging to described waste and old dynamic lithium battery to be detected, and detects the discharge capacity of described waste and old dynamic lithium battery to be detected;
Some second discharge measuring unit, each single lithium battery one_to_one corresponding with described waste and old dynamic lithium battery to be detected, discharges for the single lithium battery connected it, and detects the discharge capacity of the single lithium battery that it connects;
First control module, for the voltage and current from each single lithium battery described in described monitoring means Real-time Obtaining, and judges whether each single lithium battery described reaches fully charged state or empty electricity condition accordingly;
Described first control module also for:
Start described overall charhing unit, until arbitrary single lithium battery reaches fully charged state in described waste and old dynamic lithium battery to be detected, close described overall charhing unit; Start described charge equalization unit, until all single lithium battery reach fully charged state, close described charge equalization unit; Start described first discharge measuring unit, until arbitrary single lithium battery reaches sky electricity condition, close described first discharge measuring unit and obtain the discharge capacity that described first discharge measuring unit inspection arrives; Start the second discharge measuring unit be connected with each single lithium battery not reaching sky electricity condition in described waste and old dynamic lithium battery to be detected, when each single lithium battery reaches sky electricity condition, close the second discharge measuring unit of this single lithium battery connection and obtain its discharge capacity detected; The second discharge measuring unit inspection that each single lithium battery is connected to discharge capacity and the discharge capacity sum that arrives of described first discharge measuring unit inspection, be defined as the capacity of corresponding single lithium battery;
And,
Overall discharge cell, for discharging to waste and old dynamic lithium battery to be detected;
Balanced discharge unit, for carrying out balanced discharge to described waste and old dynamic lithium battery to be detected;
First charging measuring unit, for charging to described waste and old dynamic lithium battery to be detected, and detects the charging capacity of described waste and old dynamic lithium battery to be detected;
Some second charging measuring units, each single lithium battery one_to_one corresponding with described waste and old dynamic lithium battery to be detected, charges for the single lithium battery connected it, and detects the charging capacity of the single lithium battery that it connects;
Second control module, for the voltage and current from each single lithium battery described in described monitoring means Real-time Obtaining, and judges whether each single lithium battery described reaches fully charged state or empty electricity condition accordingly;
Described second control module also for:
Start described overall discharge cell, until arbitrary single lithium battery reaches sky electricity condition in described waste and old dynamic lithium battery to be detected, close described overall discharge cell; Start described balanced discharge unit, until all single lithium battery reach sky electricity condition, close described balanced discharge unit; Start described first charging measuring unit, until arbitrary single lithium battery reaches fully charged state, close described first charging measuring unit and obtain described first charging capacity that detects of charging measuring unit; Start second charging measuring unit of being connected with each single lithium battery not reaching fully charged state in described waste and old dynamic lithium battery to be detected, when each single lithium battery reaches fully charged state, close the second charging measuring unit of this single lithium battery connection and obtain its charging capacity detected; The second charging capacity and described first that detects of charging measuring unit each single lithium battery connected is charged the charging capacity sum that measuring unit detects, is defined as the capacity of corresponding single lithium battery.
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