CN109738801A - Battery system heating power test method and system - Google Patents
Battery system heating power test method and system Download PDFInfo
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- CN109738801A CN109738801A CN201811453716.1A CN201811453716A CN109738801A CN 109738801 A CN109738801 A CN 109738801A CN 201811453716 A CN201811453716 A CN 201811453716A CN 109738801 A CN109738801 A CN 109738801A
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- battery system
- discharge
- heat management
- charge
- heating power
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The embodiment of the present application discloses a kind of battery system heating power test method and system, wherein method includes: that the battery system that is arranged in incubator of control executes charge and discharge at least once；Heat management is carried out to the battery system by heat management system in each charge and discharge process；It records the heat management system and is adjusting at least one coolant temperature variable quantity in the battery system temperature course；At least one heating power of the battery system is determined based at least one described coolant temperature variable quantity.Test method is simple and convenient, low testing cost, reliable test result.
Description
Technical field
This application involves new energy measuring technology, especially a kind of battery system heating power test method and system.
Background technique
With being widely applied for electric car, the importance of the electrokinetic cell system as power source is with regard to apparent
?.And battery system is limited by the build-in attribute of itself, will appear under extremely cold and very hot environmental condition service life rapid decay,
The problems such as course continuation mileage wretched insufficiency, charging time lengthening, difficult in acceleration.Since temperature is to the service life and safety of battery
Etc. having a major impact, so needing reasonable thermal management policy.
Summary of the invention
The embodiment of the present application provides a kind of battery system heating power measuring technology.
According to the one aspect of the embodiment of the present application, a kind of battery system heating power test method for providing, comprising:
It controls the battery system being arranged in incubator and executes charge and discharge at least once；
Heat management is carried out to the battery system by heat management system in each charge and discharge process；
It records the heat management system and is adjusting at least one coolant temperature change in the battery system temperature course
Change amount；
At least one heating power of the battery system is determined based at least one described coolant temperature variable quantity.
Optionally, in any of the above-described embodiment of the method for the application, the heat management system includes inlet and outlet；
Described at least one coolant liquid temperature for recording the heat management system in the adjusting battery system temperature course
Spend variable quantity, comprising:
It is adjusted in the battery system temperature course in the heat management system, at interval of preset time, acquires institute respectively
State the coolant temperature of water inlet and the coolant temperature of the water outlet；
The coolant temperature of coolant temperature and the water outlet based on the collected at least one set water inlet, is obtained
Obtain at least one described coolant temperature variable quantity.
Optionally, it in any of the above-described embodiment of the method for the application, is executed in the battery system that control is arranged in incubator
At least once before charge and discharge, further includes:
Obtain the first temperature of the battery system being arranged in incubator；
It is described that heat management, packet are carried out to the battery system by heat management system in each charge and discharge process
It includes:
It is adjusted in each charge and discharge process by temperature of the heat management system to the battery system,
Make the battery system after the completion of electric discharge, the temperature of the battery system is the first temperature.
Optionally, in any of the above-described embodiment of the method for the application, based at least one coolant temperature variation
Amount determines before at least one heating power of the battery system, further includes:
When recording the battery system and carrying out the charge and discharge every time, the discharge time of the battery system；
Described at least one fever function that the battery system is determined based at least one described coolant temperature variable quantity
Rate, comprising:
At least one total calorific value of the battery system is determined based at least one described coolant temperature variable quantity；
The battery system is determined at least based at least one described total calorific value and at least one described discharge time
One heating power.
Optionally, in any of the above-described embodiment of the method for the application, based at least one coolant temperature variation
Amount determines before at least one heating power of the battery system, further includes:
Obtain the random quality that the coolant liquid acts on the battery system in the preset time；
Described at least one total fever that the battery system is determined based at least one described coolant temperature variable quantity
Amount, comprising:
Random quality and coolant liquid based at least one described coolant temperature variable quantity, at least one coolant liquid
Specific heat capacity, determine the total calorific value of the battery system.
Optionally, described to be become based at least one described coolant temperature in any of the above-described embodiment of the method for the application
Change amount, the random quality of at least one coolant liquid and the specific heat capacity of coolant liquid, determine the total calorific value of the battery system,
Include:
Calculate the corresponding coolant temperature variable quantity of each preset time, the specific heat capacity of coolant liquid and described cold
But the product of the random quality of liquid obtains unit calorific value；
At least one corresponding unit calorific value of at least one described preset time in the discharge time is counted, is obtained total
Calorific value.
Optionally, described based at least one described total calorific value and institute in any of the above-described embodiment of the method for the application
State at least one heating power that at least one discharge time determines the battery system, comprising:
By the total calorific value divided by the total calorific value corresponding discharge time, a heating power is obtained；
At least one heating power of the battery system is obtained based at least one described total calorific value.
Optionally, in any of the above-described embodiment of the method for the application, each charge and discharge include primary charging and primary
Electric discharge；
The battery system being arranged in incubator that controls executes charge and discharge at least once, comprising:
After the battery system standard charging of every execution being arranged in incubator by charging/discharging apparatus control, execute
Primary electric discharge, described at least one the corresponding discharge-rate that discharges at least once.
Optionally, described to pass through heat in each charge and discharge process in any of the above-described embodiment of the method for the application
Management system carries out heat management to the battery system, comprising:
The flow velocity of the coolant liquid is controlled to described by the heat management system in each charge and discharge process
Battery system carries out heat management, the corresponding different cooling liquid speed of electric discharge of the difference discharge-rate.
Optionally, it in any of the above-described embodiment of the method for the application, is executed in the battery system that control is arranged in incubator
At least once before charge and discharge, further includes:
The battery system is pre-processed, make the battery system discharge twice in succession between discharge capacity difference it is small
In the 3% of electric discharge total capacity.
Optionally, described that the battery system is pre-processed in any of the above-described embodiment of the method for the application, packet
It includes:
The battery system is carried out described charge and discharge at least 3 times by charging/discharging apparatus.
Optionally, it in any of the above-described embodiment of the method for the application, is executed in the battery system that control is arranged in incubator
At least once before charge and discharge, further includes:
The battery system is completely covered by lagging casing, to reduce the heat in the battery system and incubator
Exchange.
According to the another aspect of the embodiment of the present application, a kind of battery system heating power test macro for providing, comprising:
Charging/discharging apparatus executes charge and discharge at least once for controlling the battery system being arranged in incubator；
Heat management system, for carrying out heat management to the battery system in each charge and discharge process；
Temperature acquisition equipment, for recording the heat management system in adjusting the battery system temperature course at least
One coolant temperature variable quantity；
Processor, for determined based at least one described coolant temperature variable quantity the battery system at least one
Heating power.
Optionally, in any of the above-described system embodiment of the application, the heat management system includes inlet and outlet；
The temperature acquisition equipment is specifically used for adjusting in the battery system temperature course in the heat management system,
At interval of preset time, the coolant temperature of the water inlet and the coolant temperature of the water outlet are acquired respectively；Based on adopting
The coolant temperature of at least one set water inlet collected and the coolant temperature of the water outlet, obtain described at least one
Coolant temperature variable quantity.
Optionally, in any of the above-described system embodiment of the application, the system also includes:
Battery temperature acquires equipment, for obtaining the first temperature of the battery system being arranged in incubator；
The heat management system is specifically used in each charge and discharge process through the heat management system to described
The temperature of battery system is adjusted, and makes the battery system after the completion of electric discharge, and the temperature of the battery system is the first temperature
Degree.
Optionally, in any of the above-described system embodiment of the application, the system also includes:
Time recording equipment, when carrying out the charge and discharge every time for recording the battery system, the battery system
Discharge time；
The processor, specifically for determining the battery system based at least one described coolant temperature variable quantity
At least one total calorific value；The battery system is determined based at least one described total calorific value and at least one described discharge time
At least one heating power of system.
Optionally, in any of the above-described system embodiment of the application, the processor is also used to obtain the coolant liquid and exists
The random quality that the preset time acts on the battery system；
The processor is determining at least the one of the battery system based at least one described coolant temperature variable quantity
When a total calorific value, for the random matter based at least one described coolant temperature variable quantity, at least one coolant liquid
The specific heat capacity of amount and coolant liquid, determines the total calorific value of the battery system.
Optionally, in any of the above-described system embodiment of the application, the processor is based at least one described cooling
Liquid temperature variation, the random quality of at least one coolant liquid and the specific heat capacity of coolant liquid, determine the battery system
When total calorific value, specifically for calculating the ratio of the corresponding coolant temperature variable quantity of each preset time, coolant liquid
The product of the random quality of thermal capacitance and the coolant liquid obtains unit calorific value；Count at least one institute in the discharge time
At least one corresponding unit calorific value of preset time is stated, total calorific value is obtained.
Optionally, in any of the above-described system embodiment of the application, the processor is specifically used for the total calorific value
Divided by the total calorific value corresponding discharge time, a heating power is obtained；It is obtained based at least one described total calorific value
At least one heating power of the battery system.
Optionally, in any of the above-described system embodiment of the application, each charge and discharge include primary charging and primary
Electric discharge；
The charging/discharging apparatus is filled specifically for controlling the standard of the every execution of the battery system being arranged in incubator
After electricity, primary electric discharge, described at least one the corresponding discharge-rate that discharges at least once are executed.
Optionally, in any of the above-described system embodiment of the application, the heat management system is specifically used for described every time
The flow velocity for controlling the coolant liquid in charge and discharge process by the heat management system carries out heat management to the battery system,
The corresponding different cooling liquid speed of electric discharge of the difference discharge-rate.
Optionally, in any of the above-described system embodiment of the application, the charging/discharging apparatus is also used to the battery system
System pre-processed, make the battery system discharge twice in succession between discharge capacity difference be less than discharge total capacity 3%.
Optionally, in any of the above-described system embodiment of the application, the charging/discharging apparatus to the battery system into
When row pretreatment, it is specifically used for carrying out the battery system described charge and discharge at least 3 times by charging/discharging apparatus.
Optionally, in any of the above-described system embodiment of the application, the system also includes:
Lagging casing, for the battery system to be completely covered, to reduce in the battery system and incubator
Heat exchange.
Based on a kind of battery system heating power test method and system that the above embodiments of the present application provide, control setting
Battery system in incubator executes charge and discharge at least once；By heat management system to battery system in each charge and discharge process
System carries out heat management；Record at least one coolant temperature variation of the heat management system in regulating cell system temperature process
Amount；At least one heating power of battery system is determined based at least one coolant temperature variable quantity, test method is simply square
Just, low testing cost, reliable test result.
Below by drawings and examples, the technical solution of the application is described in further detail.
Detailed description of the invention
The attached drawing for constituting part of specification describes embodiments herein, and together with description for explaining
The principle of the application.
The application can be more clearly understood according to following detailed description referring to attached drawing, in which:
Fig. 1 is a flow diagram of battery system heating power test method provided by the embodiments of the present application.
Fig. 2 is the fitting in an optional example of battery system heating power test method provided by the embodiments of the present application
Curve synoptic diagram.
Fig. 3 is a structural schematic diagram of battery system heating power test macro provided by the embodiments of the present application.
Specific embodiment
The various exemplary embodiments of the application are described in detail now with reference to attached drawing.It should also be noted that unless in addition having
Body explanation, the unlimited system of component and the positioned opposite of step, numerical expression and the numerical value otherwise illustrated in these embodiments is originally
The range of application.
Simultaneously, it should be appreciated that for ease of description, the size of various pieces shown in attached drawing is not according to reality
Proportionate relationship draw.
Be to the description only actually of at least one exemplary embodiment below it is illustrative, never as to the application
And its application or any restrictions used.
Technology, method and apparatus known to person of ordinary skill in the relevant may be not discussed in detail, but suitable
In the case of, the technology, method and apparatus should be considered as part of specification.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, then in subsequent attached drawing does not need that it is further discussed.
Fig. 1 is a flow diagram of battery system heating power test method provided by the embodiments of the present application.The party
Method can be executed by any electronic equipment, such as terminal device, server, mobile device, mobile unit etc..As shown in Figure 1,
The embodiment method includes:
Step 110, the battery system that control is arranged in incubator executes charge and discharge at least once.
Battery system in the embodiment of the present application includes that at least two batteries are connected and composed by connector, with single battery
It is different；Optionally, the charging of battery system can be controlled in the embodiment of the present application by the charging/discharging apparatus connecting with battery system
And electric discharge, charging is regarded as that the fully charged of battery system is discharged completely to battery system after charging, passed through every time
The total amount of heat that charge and discharge statistics battery system issues in each charge and discharge process at least once, and then it is each to obtain battery system
The heating power of charge and discharge can set different discharge-rates for each charge and discharge and discharge.
Discharge-rate is battery discharge rates, indicates a kind of measurement of electric discharge speed.Discharge-rate=discharge current/specified
Capacity；Such as: when rated capacity is that the battery of 100Ah is discharged with 20A, discharge-rate 0.2C.
Step 120, heat management is carried out to battery system by heat management system in each charge and discharge process.
Since battery system can all distribute heat in charge and discharge process, but directly the heat of battery system release is carried out
It is more difficult to count, and is not easy to realize, the embodiment of the present application is controlled by temperature of the heat management system to battery system, realizes heat pipe
Reason, the heat discharged using the heat that heat management system is absorbed into as battery system realize simple and easy battery-heating amount
It obtains.
Step 130, at least one coolant temperature of record heat management system in regulating cell system temperature process becomes
Change amount.
Optionally, heat management system, which can be, carries out temperature adjusting to battery system by coolant liquid circulation；Every primary cell
System carries out charge and discharge, and heat management system can get the heat that the battery system discharges in this time charge and discharge process
Amount, specifically, the heat that battery system can be discharged by obtaining the temperature change that occurs after battery system of coolant liquid into
Row statistics, optionally, coolant liquid can be water or other liquid or solution.
Step 140, at least one heating power of battery system is determined based at least one coolant temperature variable quantity.
A kind of battery system heating power test method that the above embodiments of the present application provide, control are arranged in incubator
Battery system executes charge and discharge at least once；Heat pipe is carried out to battery system by heat management system in each charge and discharge process
Reason；Record at least one the coolant temperature variable quantity of heat management system in regulating cell system temperature process；Based at least
One coolant temperature variable quantity determines at least one heating power of battery system, and test method is simple and convenient, testing expense
Cheap, reliable test result.
In one or more optional embodiments, heat management system includes inlet and outlet；
Step 130 includes:
During heat management system regulating cell system temperature, at interval of preset time, the cold of water inlet is acquired respectively
But the coolant temperature of liquid temperature and water outlet；
Based on collected at least one set of coolant temperature of water inlet and the coolant temperature of water outlet, at least one is obtained
A coolant temperature variable quantity.
Optionally, due in battery system charge and discharge process, it may be necessary to which a large amount of coolant liquid carries out battery system
Temperature is adjusted, and passes through the heat that battery system obtains to obtain coolant liquid in heat management system, cannot be only before charge and discharge
The temperature difference for obtaining coolant liquid later, is inaccurate in this way；At interval of preset time in the embodiment of the present application, to water inlet
Coolant temperature and the coolant temperature of water outlet be acquired, to obtain all heat that coolant liquid is absorbed from battery system
Amount, for example, preset time can be set to the time that coolant liquid flows to water outlet from water inlet, this time and flow velocity phase
It closes, that is, coolant liquid different in flow rate is arranged different preset times.
In one or more optional embodiments, prior to step 110, further includes:
Obtain the first temperature of the battery system being arranged in incubator；
Step 120 includes:
It is adjusted in each charge and discharge process by temperature of the heat management system to battery system, battery system is made to exist
After the completion of electric discharge, the temperature of battery system is the first temperature.
Optionally, when battery system is in incubator, the first temperature of battery system can be different from the temperature in incubator, are
The heating power of test battery system at different ambient temperatures, can also be configured the temperature in incubator, such as: it will
Warm the temperature inside the box is respectively set to -20 DEG C, -10 DEG C, 0 DEG C, 10 DEG C, 25 DEG C, 35 DEG C, 50 DEG C, 60 DEG C.The embodiment of the present application passes through
Temperature before and after guaranteeing charge and discharge is consistent, realizes and obtains the heat that battery system discharges in charge and discharge process.
Wherein, in charge and discharge process, when observing that battery core temperature lower than the first temperature T1, can suspend heat management, until
Battery core temperature recovery reduces flow velocity to the first temperature T1 is higher than, and heat management is reopened, after battery system stops electric discharge, if electric
Cell system temperature is higher than the first temperature T1, and heat management is persistently opened into battery core temperature and returns to the first temperature T1, closes heat management, note
Record the charging time or discharge time of battery system.Optionally, using the mean temperature of battery core as battery core temperature.
Optionally, before executing step 140, further includes:
When recording the battery system each charge and discharge of progress, the discharge time of battery system；
At least one heating power of battery system is determined based at least one coolant temperature variable quantity, comprising:
At least one total calorific value of battery system is determined based at least one coolant temperature variable quantity；
At least one heating power of battery system is determined based at least one total calorific value and at least one discharge time.
In the embodiment of the present application, the heating power of battery system is the calorific value in the unit time, optionally, calculates and obtains
The total calorific value that battery system discharges in each discharge process obtains at least one total calorific value, is based on each total calorific value
Corresponding discharge time can be obtained in current discharge process, and the heating power of battery system, the embodiment of the present application obtains
The heating power (electric discharge can correspond to different discharge-rates every time) to discharge at least once is taken, can be obtained the battery system not
With the heating power under discharge-rate.
In order to calculate acquisition total calorific value, before executing step 140, further includes:
Obtain the random quality that coolant liquid acts on battery system in preset time.
Due to coolant liquid temperature variation when correspond to preset time, in order to improve the accuracy of calculating, the application is real
The quality that the random quality of coolant liquid is limited to the coolant liquid acted in preset time battery system by example is applied, it is optional
Ground, random quality here, which can be calculated by coolant liquid in preset time, flow velocity and coolant liquid density, to be obtained, specifically, can
It is calculated by following formula (1):
mt=ρ × V * Δ t formula (1)
Wherein, mtIndicate the random quality of corresponding preset time, ρ indicates coolant liquid density, and V indicates that flow velocity, Δ t indicate pre-
If the time.
Optionally, at least one total calorific value of battery system is determined based at least one coolant temperature variable quantity, is wrapped
It includes:
Based at least one coolant temperature variable quantity, the random quality of at least one coolant liquid and the specific heat of coolant liquid
Hold, determines the total calorific value of battery system.
When specific heat capacity (Specific Heat Capacity) refers to no phase change and chemical change, a certain amount of homogeneous object
Heat needed for matter temperature increases 1K.Since the specific heat capacity of different coolant liquids is different, the coolant liquid of phase homogenous quantities rises phase
In the case where synthermal, the heat absorbed is different, and the embodiment of the present application is by the way that coolant liquid is added when calculating total calorific value
The accuracy that the random quality assurance of specific heat capacity and coolant liquid total calorific value calculates.
Optionally, random quality and coolant liquid based at least one coolant temperature variable quantity, at least one coolant liquid
Specific heat capacity, determine the total calorific value of battery system, comprising:
Calculate the corresponding coolant temperature variable quantity of each preset time, the specific heat capacity of coolant liquid and the random matter of coolant liquid
The product of amount obtains unit calorific value；
At least one corresponding unit calorific value of at least one preset time in discharge time is counted, total calorific value is obtained.
Optionally, unit calorific value indicates the calorific value of battery system release in a preset time, is discharged by statistics
The corresponding unit calorific value of all preset times, can be obtained the fever total amount of battery system, specifically, can pass through public affairs in time
Formula (2), which is realized, calculates total calorific value:
Q=∑ c × mt×ΔTtFormula (2)
Wherein, Q indicates that total calorific value, c indicate the specific heat capacity of coolant liquid, mtIndicate the random quality of corresponding preset time,
ΔTtIndicate coolant temperature variable quantity.
In one or more optional embodiments, determined based at least one total calorific value and at least one discharge time
At least one heating power of battery system, comprising:
By total calorific value divided by total calorific value corresponding discharge time, a heating power is obtained；
At least one heating power of battery system is obtained based at least one total calorific value.
Optionally, heating power is the calorific value that battery system discharges within the unit time, and therefore, the embodiment of the present application is logical
It crosses total calorific value divided by the total calorific value corresponding discharge time, can be obtained heating power, and then obtain battery system and exist
Heating power when each charge and discharge specifically can calculate heating power by following formula (3):
Wherein, P indicates that heating power, Q indicate total calorific value, and t indicates charging time or discharge time, when total calorific value is
When total calorific value of the battery system within discharge time, t indicates discharge time；Optionally, when total calorific value is that battery system exists
When total calorific value in the charging time, t indicates the charging time；That is heating power represented by P can be the electric discharge of battery system
The charging heating power of heating power or battery system.
In one or more optional embodiments, each charge and discharge include primary charging and primary electric discharge；
Step 110 includes:
After the battery system standard charging of every execution being arranged in incubator by charging/discharging apparatus control, execute primary
Electric discharge, discharge at least one corresponding discharge-rate at least once.
In order to which the heating power to battery system is fully understood, the embodiment of the present application is put by least one discharge-rate
Electricity charges to battery system before the electric discharge for executing different discharge-rates, which can be standard charging,
The embodiment of the present application does not limit the specific charging process of battery system；Optionally, after each charging complete, a difference is set
Discharge-rate discharge battery system, under different discharge-rates, the heat of generation of discharging is different, at this point, can pass through
Heat management system is arranged different cooling liquid speeds and carries out temperature management to battery system.For example, in each charge and discharge process
Heat management is carried out to battery system by the flow velocity that heat management system controls coolant liquid, the electric discharge of different discharge-rates is corresponding not
Same cooling liquid speed.
For example, in an optional example, 5 charge and discharge are carried out to battery system, the discharge-rate to discharge every time and right
The cooling liquid speed answered can be set as shown in table 1 below.
| Parameter setting | For the first time | Second | For the third time | 4th time | 5th time |
| Discharge-rate (C) | 0.33 | 0.5 | 1 | 0.75 | 1.5 |
| Flow velocity (L/min) | 5 | 10 | 15 | 12 | 20 |
Table 1
In one or more optional embodiments, before executing step 110, further includes:
Battery system is pre-processed, make battery system discharge twice in succession between discharge capacity difference to be less than electric discharge total
The 3% of capacity.
The embodiment of the present application stablizes the discharge performance of battery system by pretreatment, guarantees the electric discharge total amount discharged every time
It relatively, will not be because of heating power inaccuracy caused by each discharge capacity difference of battery system.Optionally, pretreatment can be with
It is to be carried out charge and discharge at least 3 times by charging/discharging apparatus to battery system.
In one or more optional embodiments, before executing step 110, further includes:
Battery system is completely covered by lagging casing, to reduce the heat exchange in battery system and incubator.
Battery system is completely covered by lagging casing for the embodiment of the present application, which can be based on heat-insulating material system
At the embodiment of the present application does not limit the parameters such as the shape, size, thickness of lagging casing, avoids battery system release to realize
Subject to heat is dispersed into incubator, being all absorbed by the cooling fluid close to all heats for battery system release ensure that, improve
The accuracy for the heating power that test method obtains.
Optionally, in order to which the heating property to battery system is assessed, it is also based at least one fever of acquisition
Power and its corresponding discharge-rate establish discharge-rate-heating power matched curve.For example, Fig. 2 mentions for the embodiment of the present application
Matched curve schematic diagram in one optional example of the battery system heating power test method of confession.As shown in Fig. 2, wherein horizontal
Coordinate representation discharge-rate, ordinate indicate heating power.
In an alternative embodiment, battery system heating power test method provided by the embodiments of the present application can wrap
Include following steps:
Step 1: connecting electrokinetic cell system and charging/discharging apparatus, pretreatment charge and discharge at least 3 are carried out to battery system
Secondary, discharge capacity difference completes pretreatment less than 3%, wherein pretreatment uses standard charge and discharge, each charge or discharge are shelved
30 minutes, the temperature of battery system was maintained at 25 ± 3 degrees Celsius before discharging.
Step 2: with heat-insulating material by the fully wrapped around covering of battery system to reduce heat loss, and by the battery after package
System is placed on insulation rack, to guarantee the safety of battery charge and discharge process.
Step 3: battery system is placed in incubator, heat management system (e.g., water-cooling system) and charging/discharging apparatus are connected.
Step 4: opening heat management system, flow velocity is set as X Liter Per Minute (L/min), carries out standard charging, X be greater than
1 any number.
Step 5: Temperature of Warm Case sets gradually as T0,12h is shelved.Battery core temperature T1 at this time is recorded, battery pack relay is closed
Device, is sequentially adjusted in flow velocity and discharge-rate is discharged to battery core blanking voltage (for example, can be configured according to table 1)；Wherein, T0 can
To be respectively set to -20 DEG C, -10 DEG C, 0 DEG C, 10 DEG C, 25 DEG C, 35 DEG C, 50 DEG C, 60 DEG C etc..
Step 6: in heat management opening process, when observing that battery core temperature lower than T1, can suspend heat management, until battery core
Temperature recovery reduces flow velocity to T1 is higher than, and reopens heat management, after battery stops electric discharge, if battery temperature is higher than T1, heat pipe
Reason is persistently opened into battery core temperature and returns to T1, closes heat management, records the discharge time t of battery.
Step 7: test process records the temperature of the temperature of water inlet and water outlet in heat management system, the step in real time
It is not to carry out after the above step is finished, but executed while fourth, fifth, six steps execute.
Step 8: according to the fever function under above-mentioned formula (2) Temperature of Warm Case different with formula (3) calculating and discharge-rate
Rate.
Those of ordinary skill in the art will appreciate that: realize that all or part of the steps of above method embodiment can pass through
The relevant hardware of program instruction is completed, and program above-mentioned can be stored in a computer readable storage medium, the program
When being executed, step including the steps of the foregoing method embodiments is executed；And storage medium above-mentioned includes: ROM, RAM, magnetic disk or light
The various media that can store program code such as disk.
Fig. 3 is the structural representation of battery system heating power test device one embodiment provided by the embodiments of the present application
Figure.The device of the embodiment can be used for realizing the above-mentioned each method embodiment of the application.As shown in figure 3, the device packet of the embodiment
It includes:
Charging/discharging apparatus 31 executes charge and discharge at least once for controlling the battery system being arranged in incubator.
Heat management system 32, for carrying out heat management to battery system in each charge and discharge process.
Temperature acquisition equipment 33, it is cold at least one of regulating cell system temperature process for recording heat management system
But liquid temperature variation.
Processor 34, for determining at least one fever function of battery system based at least one coolant temperature variable quantity
Rate.
A kind of battery system heating power test macro that the above embodiments of the present application provide, control are arranged in incubator
Battery system executes charge and discharge at least once；Heat pipe is carried out to battery system by heat management system in each charge and discharge process
Reason；Record at least one the coolant temperature variable quantity of heat management system in regulating cell system temperature process；Based at least
One coolant temperature variable quantity determines at least one heating power of battery system, and test method is simple and convenient, testing expense
Cheap, reliable test result.
In one or more optional embodiments, heat management system 32 includes inlet and outlet；
Temperature acquisition equipment 33 is specifically used for during heat management system regulating cell system temperature, at interval of default
Time acquires the coolant temperature of water inlet and the coolant temperature of water outlet respectively；Based on collected at least one set of water inlet
The coolant temperature of mouth and the coolant temperature of water outlet, obtain at least one described coolant temperature variable quantity.
Optionally, due in battery system charge and discharge process, it may be necessary to which a large amount of coolant liquid carries out battery system
Temperature is adjusted, and passes through the heat that battery system obtains to obtain coolant liquid in heat management system, cannot be only before charge and discharge
The temperature difference for obtaining coolant liquid later, is inaccurate in this way；At interval of preset time in the embodiment of the present application, to water inlet
Coolant temperature and the coolant temperature of water outlet be acquired, to obtain all heat that coolant liquid is absorbed from battery system
Amount, for example, preset time can be set to the time that coolant liquid flows to water outlet from water inlet, this time and flow velocity phase
It closes, that is, coolant liquid different in flow rate is arranged different preset times.
Optionally, system provided by the embodiments of the present application further include:
Battery temperature acquires equipment, for obtaining the first temperature of the battery system being arranged in incubator；Optionally, battery
Temperature acquisition equipment can be the equipment such as temperature sensor, and the battery temperature acquisition that the unlimited fixture body of the embodiment of the present application uses is set
It is standby.
Heat management system 32, specifically for passing through heat management system in each charge and discharge process to the temperature of battery system
It is adjusted, makes battery system after the completion of electric discharge, the temperature of battery system is the first temperature.
Optionally, system provided by the embodiments of the present application further include:
Time recording equipment, when carrying out each charge and discharge for recording battery system, the discharge time of battery system；It is optional
Ground, the equipment that time recording equipment can be the record time such as stopwatch, the time note that the unlimited fixture body of the embodiment of the present application uses
Recording apparatus.
Processor 34, specifically for based at least one coolant temperature variable quantity determine battery system at least one is total
Calorific value；At least one heating power of battery system is determined based at least one total calorific value and at least one discharge time.
Optionally, processor 34 are also used to obtain the random matter that coolant liquid acts on battery system in preset time
Amount；
Processor 34 is at least one total calorific value for determining battery system based at least one coolant temperature variable quantity
When, for based at least one coolant temperature variable quantity, the random quality of at least one coolant liquid and the specific heat capacity of coolant liquid,
Determine the total calorific value of battery system.
Optionally, processor 34 is in the random matter based at least one coolant temperature variable quantity, at least one coolant liquid
When determining the total calorific value of battery system, it is corresponding cold to be specifically used for each preset time of calculating for the specific heat capacity of amount and coolant liquid
But the product of the random quality of liquid temperature variation, the specific heat capacity of coolant liquid and coolant liquid obtains unit calorific value；Statistics electric discharge
At least one corresponding unit calorific value of at least one preset time in time, obtains total calorific value.
Optionally, processor 34 are specifically used for total calorific value obtaining one divided by total calorific value corresponding discharge time
Heating power；At least one heating power of battery system is obtained based at least one total calorific value.
In one or more optional embodiments, each charge and discharge include primary charging and primary electric discharge；
Charging/discharging apparatus 31, specifically for controlling the battery system standard charging of every execution being arranged in incubator
Afterwards, primary electric discharge is executed, discharge at least one corresponding discharge-rate at least once.
In order to which the heating power to battery system is fully understood, the embodiment of the present application is put by least one discharge-rate
Electricity charges to battery system before the electric discharge for executing different discharge-rates, which can be standard charging,
The embodiment of the present application does not limit the specific charging process of battery system；Optionally, after each charging complete, a difference is set
Discharge-rate discharge battery system, under different discharge-rates, the heat of generation of discharging is different, at this point, can pass through
Heat management system is arranged different cooling liquid speeds and carries out temperature management to battery system.
Optionally, heat management system 32 are specifically used for controlling cooling by heat management system in each charge and discharge process
The flow velocity of liquid carries out heat management, the corresponding different cooling liquid speed of the electric discharge of different discharge-rates to battery system.
In one or more optional embodiments, charging/discharging apparatus 31 is also used to pre-process battery system, make
Battery system discharge twice in succession between discharge capacity difference be less than electric discharge total capacity 3%.
The embodiment of the present application stablizes the discharge performance of battery system by pretreatment, guarantees the electric discharge total amount discharged every time
It relatively, will not be because of heating power inaccuracy caused by each discharge capacity difference of battery system.Optionally, pretreatment can be with
It is to be carried out charge and discharge at least 3 times by charging/discharging apparatus to battery system.
Optionally, charging/discharging apparatus is specifically used for through charging/discharging apparatus when pre-processing to battery system to electricity
Cell system carries out charge and discharge at least 3 times.
In one or more optional embodiments, system provided by the embodiments of the present application further include:
Lagging casing, for battery system to be completely covered, to reduce the heat exchange in battery system and incubator.
Battery system is completely covered by lagging casing for the embodiment of the present application, which can be based on heat-insulating material system
At the embodiment of the present application does not limit the parameters such as the shape, size, thickness of lagging casing, avoids battery system release to realize
Subject to heat is dispersed into incubator, being all absorbed by the cooling fluid close to all heats for battery system release ensure that, improve
The accuracy for the heating power that test method obtains.
The present processes and system may be achieved in many ways.For example, can by software, hardware, firmware or
Software, hardware, firmware any combination realize the present processes and device.The said sequence of the step of for the method
Merely to be illustrated, the step of the present processes, is not limited to sequence described in detail above, special unless otherwise
It does not mentionlet alone bright.In addition, in some embodiments, also the application can be embodied as to record program in the recording medium, these programs
Including for realizing according to the machine readable instructions of the present processes.Thus, the application also covers storage for executing basis
The recording medium of the program of the present processes.
The description of the present application is given for the purpose of illustration and description, and is not exhaustively or by the application
It is limited to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.It selects and retouches
Embodiment is stated and be the principle and practical application in order to more preferably illustrate the application, and those skilled in the art is enable to manage
Solution the application is to design various embodiments suitable for specific applications with various modifications.
Claims (10)
1. a kind of battery system heating power test method characterized by comprising
It controls the battery system being arranged in incubator and executes charge and discharge at least once；
Heat management is carried out to the battery system by heat management system in each charge and discharge process；
It records the heat management system and is adjusting at least one coolant temperature variable quantity in the battery system temperature course；
At least one heating power of the battery system is determined based at least one described coolant temperature variable quantity.
2. the method according to claim 1, wherein the heat management system includes inlet and outlet；
Described at least one coolant temperature for recording the heat management system in the adjusting battery system temperature course becomes
Change amount, comprising:
Adjusted in the battery system temperature course in the heat management system, at interval of preset time, respectively acquisition it is described into
The coolant temperature of the coolant temperature at the mouth of a river and the water outlet；
The coolant temperature of coolant temperature and the water outlet based on the collected at least one set water inlet obtains extremely
A few coolant temperature variable quantity.
3. according to the method described in claim 2, it is characterized in that, being executed at least in the battery system that control is arranged in incubator
Before charge and discharge, further includes:
Obtain the first temperature of the battery system being arranged in incubator；
It is described that heat management is carried out to the battery system by heat management system in each charge and discharge process, comprising:
It is adjusted in each charge and discharge process by temperature of the heat management system to the battery system, makes institute
Battery system is stated after the completion of electric discharge, the temperature of the battery system is the first temperature.
4. according to the method described in claim 3, it is characterized in that, true based at least one described coolant temperature variable quantity
Before at least one heating power of the fixed battery system, further includes:
When recording the battery system and carrying out the charge and discharge every time, the discharge time of the battery system；
Described at least one heating power that the battery system is determined based at least one described coolant temperature variable quantity, packet
It includes:
At least one total calorific value of the battery system is determined based at least one described coolant temperature variable quantity；
At least one of the battery system is determined based at least one described total calorific value and at least one described discharge time
Heating power.
5. according to the method described in claim 4, it is characterized in that, true based at least one described coolant temperature variable quantity
Before at least one heating power of the fixed battery system, further includes:
Obtain the random quality that the coolant liquid acts on the battery system in the preset time；
Described at least one total calorific value that the battery system is determined based at least one described coolant temperature variable quantity, packet
It includes:
Based at least one described coolant temperature variable quantity, the random quality of at least one coolant liquid and the ratio of coolant liquid
Thermal capacitance determines the total calorific value of the battery system.
6. according to the method described in claim 5, it is characterized in that, described based at least one coolant temperature variation
Amount, the random quality of at least one coolant liquid and the specific heat capacity of coolant liquid, determine the total calorific value of the battery system, wrap
It includes:
Calculate the specific heat capacity and the coolant liquid of the corresponding coolant temperature variable quantity of each preset time, coolant liquid
Random quality product, obtain unit calorific value；
At least one corresponding unit calorific value of at least one described preset time in the discharge time is counted, total fever is obtained
Amount.
7. according to any method of claim 4-6, which is characterized in that it is described based at least one described total calorific value and
At least one described discharge time determines at least one heating power of the battery system, comprising:
By the total calorific value divided by the total calorific value corresponding discharge time, a heating power is obtained；
At least one heating power of the battery system is obtained based at least one described total calorific value.
8. -7 any method according to claim 1, which is characterized in that each charge and discharge include primary charging and one
Secondary electric discharge；
The battery system being arranged in incubator that controls executes charge and discharge at least once, comprising:
After the battery system standard charging of every execution being arranged in incubator by charging/discharging apparatus control, execute primary
Electric discharge, described at least one the corresponding discharge-rate that discharges at least once.
9. according to the method described in claim 8, it is characterized in that, described pass through heat management in each charge and discharge process
System carries out heat management to the battery system, comprising:
The flow velocity of the coolant liquid is controlled to the battery by the heat management system in each charge and discharge process
System carries out heat management, the corresponding different cooling liquid speed of electric discharge of the difference discharge-rate.
10. a kind of battery system heating power test macro characterized by comprising
Charging/discharging apparatus executes charge and discharge at least once for controlling the battery system being arranged in incubator；
Heat management system, for carrying out heat management to the battery system in each charge and discharge process；
Temperature acquisition equipment is adjusting at least one of described battery system temperature course for recording the heat management system
Coolant temperature variable quantity；
Processor, for determining at least one fever of the battery system based at least one described coolant temperature variable quantity
Power.
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| CN201811453716.1A CN109738801A (en) | 2018-11-30 | 2018-11-30 | Battery system heating power test method and system |
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Application publication date: 20190510 |