CN104900935A - Charging heat management control method of battery pack - Google Patents
Charging heat management control method of battery pack Download PDFInfo
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- CN104900935A CN104900935A CN201510297547.7A CN201510297547A CN104900935A CN 104900935 A CN104900935 A CN 104900935A CN 201510297547 A CN201510297547 A CN 201510297547A CN 104900935 A CN104900935 A CN 104900935A
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- 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
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Abstract
The invention discloses a charging heat management control method of a battery pack. The battery pack is subjected to heat management through the method of setting five processes (states), namely a charging preheating process, a charging heat-preservation process, a normal-temperature charging state, a charging pre-cooling process and a charging cooling process, and setting the jumping temperature between the adjacent processes or states, so that the frequency of changing the states of control components of a battery heat management system can be reduced, the service life of the battery is prolonged, and the work performance of the battery is improved.
Description
Technical field
The present invention relates to electrokinetic cell thermal management technology field, be specifically related to a kind of heat management control method of power brick.
Background technology
Day by day serious along with energy crisis and environmental pollution; the development of electric automobile more and more causes the attention of people; electrokinetic cell as the unique power source of pure electric automobile, its service behaviour and the life-span very large by the impact of ambient temperature, especially lithium ion battery.When too high or too low for temperature residing for lithium ion battery, can declining and even cause the damage of battery cell by charge-discharge electric power of battery cell will be caused.Therefore, the exploitation of the heat management system of electric automobile power battery is had great importance.
At present, usually with temperature be the heat management that basis for estimation realizes to power brick.When power brick temperature is higher than a certain threshold value, start to cool power brick until be cooled to stop chilling temperature value; When power brick temperature is lower than a certain threshold value, start to heat power brick until be heated to termination heating-up temperature value.But, in the very low or very high situation of ambient temperature, when stopping power brick cooling or heating, the temperature of power brick can return to threshold status rapidly, this just requires that the control assembly of heat management system converts fast repeatedly, to realize heating power brick or cooling, so not only can damage control assembly, also can cause damage to heating component or radiating subassembly, also can have an impact to the service behaviour of battery and life-span simultaneously.
Summary of the invention
The invention provides a kind of Chargeable heat management control method of power brick, the frequency that the control assembly reducing battery thermal management system converts repeatedly, improve life-span and the service behaviour of battery.
To achieve these goals, the invention provides following technical scheme:
A Chargeable heat management control method for power brick, is characterized in that, comprising:
After entering power brick charge mode, detect the temperature of multiple zones of different in power brick in real time, obtain current maximum temperature T
maxwith current minimum temperature T
min, and zones of different between maximum temperature difference;
If maximum temperature difference is more than or equal to the temperature difference threshold value of setting, then stop charging to power brick;
Otherwise, judge whether low temperature critical value T
lC≤ current minimum temperature T
min, and current maximum temperature T
max≤ high temperature critical value T
hC;
If so, then power brick is made to enter normal temperature charged state;
Otherwise, according to current maximum temperature T
maxwith current minimum temperature T
minheat management control is carried out to power brick, specifically comprises:
If current minimum temperature T
min< low temperature threshold T
lTthen by making power brick enter normal temperature charged state after charges preheat process and charging insulating process, stop in charges preheat process power brick charging and Fast Heating is carried out to power brick, power brick being charged in charging insulating process and low speed heating simultaneously;
If low temperature threshold T
lT≤ current minimum temperature T
min< low temperature critical value T
lC, then by making power brick enter normal temperature charged state after charging insulating process.
Preferably, described by making power brick enter normal temperature charged state after charges preheat process and charging insulating process, comprising:
In charges preheat process, if current minimum temperature T
minrise the first insulation transition temperature Δ T
s1, then charging insulating process is entered;
In charging insulating process, if current minimum temperature T
minrise the first charging transition temperature Δ T
c1, then normal temperature charged state is entered.
Further, described method also comprises:
In normal temperature charged state, if current minimum temperature T
mindecline the second charging transition temperature Δ T
c2, then charging insulating process is entered;
At charging insulating process, if current minimum temperature T
mindecline the second insulation transition temperature Δ T
s2, then charges preheat process is entered.
In addition, described according to current maximum temperature T
maxwith current minimum temperature T
minheat management control is carried out to power brick, specifically also comprises:
If current maximum temperature T
max>=high temperature threshold value T
hTthen by making power brick enter normal temperature charged state after charging precooling process and charging cooling procedure, stop in charging precooling process power brick charging and quick heat radiating is carried out to power brick, power brick being charged in charging cooling procedure and low speed heat radiation simultaneously;
If high temperature critical value T
hCthe current maximum temperature T of <
max< high temperature threshold value T
hT, then by making power brick enter normal temperature charged state after charging cooling procedure.
Preferably, described by making power brick enter normal temperature charged state after charging precooling process and charging cooling procedure, comprising:
In charging precooling process, if current maximum temperature T
maxdecline the first cooling transition temperature Δ T
d1, then charging cooling procedure is entered;
In charging cooling procedure, if current maximum temperature T
maxdecline the 3rd charging transition temperature Δ T
c3, then normal temperature charged state is entered.
Further, described method also comprises:
In normal temperature charged state, if current maximum temperature T
maxrise the 4th charging transition temperature Δ T
c4, then charging cooling procedure is entered;
In charging cooling procedure, if current maximum temperature T
maxrise the second cooling transition temperature Δ T
d2, then charging precooling process is entered.
Preferably, described method also comprises:
Before entering charges preheat process or entering charging insulating process or enter normal temperature charged state or enter charging precooling process or enter charging cooling procedure, detect maximum temperature difference and whether be more than or equal to the temperature difference threshold value of setting;
If so, then stop charging to power brick; Otherwise perform the step entering corresponding process or state.
Preferably, described method comprises: the heating power of Fast Heating is greater than the heating power of low speed heating; The heat radiation power of quick heat radiating is greater than the heat radiation power of low speed heat radiation; The charging current of normal temperature charged state is greater than the charging current of charging insulating process; The charging current of normal temperature charged state is greater than the charging current of charging cooling procedure.
Preferably, described method comprises: the first insulation transition temperature Δ T
s1>=the second insulation transition temperature Δ T
s2; First charging transition temperature Δ T
c1>=the second charging transition temperature Δ T
c2; 3rd charging transition temperature Δ T
c3>=the four charging transition temperature Δ T
c4; First cooling transition temperature Δ T
d1>=the second cooling transition temperature Δ T
d2.
Preferably, described battery is nickle cobalt lithium manganate battery, low temperature critical value T
lC=0 DEG C, high temperature critical value T
hC=40 DEG C, low temperature threshold T
lT=-8 DEG C, the first insulation transition temperature Δ T
s1=5 DEG C, the second insulation transition temperature Δ T
s2=2 DEG C, the first charging transition temperature Δ T
c1=2 DEG C, the second charging transition temperature Δ T
c2=2 DEG C, the 3rd charging transition temperature Δ T
c3=2 DEG C, the 4th charging transition temperature Δ T
c4=2 DEG C, the first cooling transition temperature Δ T
d1=2 DEG C, the second cold insulation but temperature Δ T
d2=2 DEG C.
Beneficial effect of the present invention is, the present invention is by arranging charges preheat process, charging insulating process, normal temperature charged state, charging precooling process, charging cooling procedure five kinds of processes (state) the method arranging transition temperature between adjacent process or state carries out heat management to power brick, the control assembly reducing battery thermal management system carries out the frequency of state transformation, improves life-span and the service behaviour of battery.
Accompanying drawing explanation
Fig. 1 is power brick Chargeable heat of the present invention management control flow schematic diagram.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
In addition, term " first ", " second ", " the 3rd ", " the 4th " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.In describing the invention, the implication of " repeatedly " is two or more, unless otherwise expressly limited specifically.
Embodiment 1
Shown in figure 1, the invention provides a kind of Chargeable heat management control method of power brick, comprise the steps:
Step S1: after entering power brick charge mode, detects the temperature of multiple zones of different in power brick in real time, obtains current maximum temperature T
maxwith current minimum temperature T
min, and zones of different between maximum temperature difference.
Described current maximum temperature T
maxfor the inner maximum temperature of the power brick detected in real time, described current minimum temperature T
minfor the inner minimum temperature of the power brick detected in real time, the maximum temperature difference between described zones of different equals described current maximum temperature T
maxdeduct described current minimum temperature T
minthe difference obtained.
Described real-time detection, comprising: after power brick joint sealing, puts into the adjustable test chamber of high/low temperature, and at the internal placement of power brick thermocouple as much as possible for detecting the Temperature Distribution of power brick inside, obtains the current maximum temperature T of power brick
maxwith current minimum temperature T
min, then, the maximum temperature difference between power brick zones of different can be calculated.
Step S2: the magnitude relationship judging the temperature difference threshold value of current maximum temperature difference and setting, if maximum temperature difference is more than or equal to the temperature difference threshold value of setting, then stops charging to power brick; Otherwise, perform step S3.
The temperature difference threshold value of described setting is to ensure that power brick can highly effective and safe work and the maximum temperature difference set.Based on this, one skilled in the art will appreciate that for different structure or dissimilar power brick, the temperature difference threshold value of setting can be different.In the power brick of usual electric automobile, temperature keeps relatively more even, if maximum temperature difference is more than or equal to the temperature difference threshold value of setting, may is that damaging or other faults appears in the battery cell in power brick, then should stops charging to power brick and overhauling.
Step S3: judge whether low temperature critical value T
lC≤ current minimum temperature T
minand current maximum temperature T
max≤ high temperature critical value T
hC, if so, then make power brick enter normal temperature charged state; Otherwise, according to current maximum temperature T
maxwith current minimum temperature T
minheat management control is carried out to power brick, performs step S4 and step S5.
So-called normal temperature charged state comprises: for ensureing that power brick can charge normal work, and power brick has and certain charges normal temperature range, when power brick temperature be in this charge normal temperature range time, power brick enters normal temperature charged state.When power brick enters described normal temperature charged state, charger charges to power brick with maximum charging current, and not to power brick heating or heat radiation, and described normal temperature charged state is also the target place of power brick heat management.Based on this, one skilled in the art will appreciate that for different structure or dissimilar power brick, described in charge normal temperature range be different.
Described low temperature critical value T
lCfor this charges normal the lowest temperature angle value of temperature range, described high temperature critical value T
hCfor this charges normal the maximum temperature value of temperature range.Like this, as low temperature critical value T
lC≤ current minimum temperature T
minand current maximum temperature T
max≤ high temperature critical value T
hCtime, power brick enters normal temperature charged state.
Step S4: if current minimum temperature T
min< low temperature threshold T
lTthen by making power brick enter normal temperature charged state after charges preheat process and charging insulating process, stop in charges preheat process power brick charging and Fast Heating is carried out to power brick, power brick being charged in charging insulating process and low speed heating simultaneously.
Described low temperature threshold T
lTfor defining the maximum temperature value of charges preheat process.
Described charges preheat process is at current minimum temperature T
min< low temperature threshold T
lTstate under to power brick Chargeable heat management process, in this charges preheat process, charger carries out Fast Heating to power brick, but charging current is zero.Described charging insulating process is at low temperature threshold T
lT≤ current minimum temperature T
min< low temperature critical value T
lCstate under power brick filled to the process of heat management, in this charging insulating process, charger charges to power brick and low speed heating simultaneously.
As described current minimum temperature T
minlow temperature threshold T described in <
lTtime, power brick first to be made to enter charges preheat process, Fast Heating is carried out to power brick; Along with the quick rising of power brick temperature, make power brick enter charging insulating process, power brick is charged and low speed heating simultaneously; Along with the rising at a slow speed of power brick temperature, power brick is made to enter described normal temperature charged state.In order to reach best heating and charging effect, the heating power of Fast Heating described in the present invention is greater than the heating power of described low speed heating, and the charging current of described normal temperature charged state is greater than the charging current of described charging insulating process.
Step S5: if low temperature threshold T
lT≤ current minimum temperature T
min< low temperature critical value T
lC, then by making power brick enter normal temperature charged state after charging insulating process.
In above-mentioned steps S4, by making power brick enter normal temperature charged state after charges preheat process and charging insulating process, also comprise:
In charges preheat process, if current minimum temperature T
minrise the first insulation transition temperature Δ T
s1, then charging insulating process is entered;
In charging insulating process, if current minimum temperature T
minrise the first charging transition temperature Δ T
c1, then normal temperature charged state is entered.
Described first insulation transition temperature Δ T
s1during for entering charging insulating process from charges preheat process, at low temperature threshold T
lTbasis on the temperature that can also rise, therefore can calculate from charges preheat process enter charging insulating process trigger temperatures equal low temperature threshold T
lTadd the first insulation transition temperature Δ T
s1.
Described first charging transition temperature Δ T
c1during for entering normal temperature charged state from charging insulating process, at low temperature critical value T
lCbasis on the temperature that can also rise, therefore can calculate the trigger temperatures entering normal temperature charged state from charging insulating process and equal low temperature critical value T
lCadd the first charging transition temperature Δ T
c1.
Further, above-mentioned steps also comprises:
In normal temperature charged state, if current minimum temperature T
mindecline the second charging transition temperature Δ T
c2, then charging insulating process is entered;
At charging insulating process, if current minimum temperature T
mindecline the second insulation transition temperature Δ T
s2, then charges preheat process is entered.
Described second insulation transition temperature Δ T
s2during for entering charges preheat process from charging insulating process, at low temperature threshold T
lTbasis on the temperature that can also decline, therefore can calculate the trigger temperatures entering charges preheat from charging insulating process and equal low temperature threshold T
lTdeduct the second insulation transition temperature Δ T
s2.
Described second charging transition temperature Δ T
c2during for entering charging insulating process from normal temperature charged state, at low temperature critical value T
lCbasis on the temperature that can also decline, therefore can calculate from normal temperature charged state enter charging insulating process trigger temperatures equal low temperature critical value T
lCdeduct the second charging transition temperature Δ T
c2.
Next, due to enter from charges preheat process charging insulating process be positive transfer process, and from charging insulating process, to enter charges preheat process be the inverse transfer process of being undertaken by the factor such as external environment condition, charge efficiency affects, and therefore can set described first and be incubated transition temperature Δ T
s1>=described second insulation transition temperature Δ T
s2charges preheat process.Entering normal temperature charged state from charging insulating process is positive transfer process, and to enter charging insulating process from normal temperature charged state be the inverse transfer process of being undertaken by the factor such as external environment condition, charge efficiency affects, therefore can set described first and to charge transition temperature Δ T
c1>=described second charging transition temperature Δ T
c2.
In actual applications, when making to change between charges preheat process and charging insulating process, existence trigger temperatures difference equals the first insulation transition temperature Δ T
s1add the second insulation transition temperature Δ T
s2, instead of at low temperature threshold T
lTnear carry out State Transferring; When changing between charging insulating process and normal temperature charged state, existence trigger temperatures difference equals the first charging transition temperature Δ T
c1add the second charging transition temperature Δ T
c2, instead of at low temperature critical value T
lCnear carry out State Transferring.The control assembly that can reduce battery thermal management system carries out the frequency of state transformation, improves life-span and the service behaviour of battery.
Further, in above-mentioned steps S3 according to current maximum temperature T
maxwith current minimum temperature T
minheat management control is carried out to power brick, also can comprise step S6 and step S7.
Step S6: if current maximum temperature T
max>=high temperature threshold value T
hTthen by making power brick enter normal temperature charged state after charging precooling process and charging cooling procedure, stop in charging precooling process power brick charging and quick heat radiating is carried out to power brick, power brick being charged in charging cooling procedure and low speed heat radiation simultaneously.
Described high temperature threshold value T
hTfor defining the lowest temperature angle value of charging precooling process.
Described charging precooling process is at current maximum temperature T
max>=high temperature threshold value T
hTstate under to power brick Chargeable heat management process, in this charging precooling process, charger carries out quick heat radiating to power brick, and charging current is zero.Described charging cooling procedure is at high temperature critical value T
hCthe current maximum temperature T of <
maxto the process of power brick Chargeable heat management under the state of < high temperature threshold, in this charging cooling procedure, charger charges to power brick and low speed heat radiation simultaneously.
As described current maximum temperature T
max>=high temperature threshold value T
hTtime, power brick first to be made to enter charging precooling process, quick heat radiating is carried out to power brick; Along with the quick decline of power brick temperature, make power brick enter charging cooling procedure, power brick is charged and low speed heat radiation simultaneously; Along with the descending at slow speed of power brick temperature, power brick is made to enter described normal temperature charged state.In order to reach best heat radiation and charging effect, the heat radiation power of quick heat radiating described in the present invention is greater than the heat radiation power of described low speed heat radiation, and the charging current of described normal temperature charged state is greater than the charging current of described charging cooling procedure.
Step S7: if high temperature critical value T
hCthe current maximum temperature T of <
max< high temperature threshold value T
hT, then by making power brick enter normal temperature charged state after charging cooling procedure.
In above-mentioned steps S6, by making power brick enter normal temperature charged state after charging precooling process and charging cooling procedure, also comprise:
In charging precooling process, if current maximum temperature T
maxdecline the first cooling transition temperature Δ T
d1, then charging cooling procedure is entered;
In charging cooling procedure, if current maximum temperature T
maxdecline the 3rd charging transition temperature Δ T
c3, then normal temperature charged state is entered.
Described first cooling transition temperature Δ T
d1during for entering charging cooling procedure from charging precooling process, at high temperature threshold value T
hTbasis on the temperature that can also decline, therefore can calculate from charging precooling process enter charging cooling procedure trigger temperatures equal high temperature threshold value T
hTdeduct the first cooling transition temperature Δ T
d1.
Described 3rd charging transition temperature Δ T
c3during for entering normal temperature charged state from charging cooling procedure, at high temperature critical value T
hCbasis on the temperature that can also decline, therefore can calculate the trigger temperatures entering normal temperature charged state from charging cooling procedure and equal high temperature critical value T
hCdeduct the 3rd charging transition temperature Δ T
c3.
Further, above-mentioned steps also comprises:
In normal temperature charged state, if current maximum temperature T
maxrise the 4th charging transition temperature Δ T
c4, then charging cooling procedure is entered;
In charging cooling procedure, if current maximum temperature T
maxrise the second cooling transition temperature Δ T
d2, then charging precooling process is entered.
Described 4th charging transition temperature Δ T
c4during for entering charging cooling procedure from normal temperature charged state, at high temperature critical value T
hCbasis on the temperature that can also rise, therefore can calculate from normal temperature charged state enter charging cooling procedure trigger temperatures equal high temperature critical value T
hCadd the 4th charging transition temperature Δ T
c4.
Described second cooling transition temperature Δ T
d2during for entering charging precooling process from charging cooling procedure, at high temperature critical value T
hCbasis on the temperature that can also rise, therefore can calculate from charging cooling procedure enter charging precooling process trigger temperatures equal high temperature critical value T
hCadd the second cooling transition temperature Δ T
d2.
Next, due to from charging precooling process enter charging cooling procedure be positive transfer process, and to enter charging precooling process from charging cooling procedure be the inverse transfer process of being undertaken by the factor such as external environment condition, charge efficiency affects, therefore can set described first and cool transition temperature Δ T
d1>=described second cooling transition temperature Δ T
d2.Entering normal temperature charged state from charging cooling procedure is positive transfer process, and normal temperature charged state to enter charging cooling procedure be the inverse transfer process of being undertaken by the factor such as external environment condition, charge efficiency affects, therefore can set the described 3rd and to charge transition temperature Δ T
c3>=described 4th charging transition temperature Δ T
c4.
In actual applications, when making charging precooling process change with charging cooling procedure, existence trigger temperatures difference equals the first cooling transition temperature Δ T
d1add the second cooling transition temperature Δ T
d2, instead of at high temperature threshold value T
hTnear carry out State Transferring; There is trigger temperatures difference when changing and equal the 3rd and to charge transition temperature Δ T in charging cooling procedure and normal temperature charged state
c3add the 4th charging transition temperature Δ T
c4, instead of high temperature critical value T
hCnear carry out State Transferring.The control assembly that also can reduce battery thermal management system carries out the frequency of state transformation, improves life-span and the service behaviour of battery.
As can be seen here, the control method of power brick Chargeable heat of the present invention management is that the method by arranging charges preheat process, charging insulating process, normal temperature charged state, charging precooling process, charging cooling procedure five kinds of process or states and arrange transition temperature between adjacent process or state carries out heat management to power brick, the control assembly reducing battery thermal management system carries out the frequency of state transformation, improves life-span and the service behaviour of battery.
Further, the control method of described power brick Chargeable heat management, also comprises:
Before entering charges preheat process or entering charging insulating process or enter normal temperature charged state or enter charging precooling process or enter charging cooling procedure, detect maximum temperature difference and whether be more than or equal to the temperature difference threshold value of setting; If so, then stop charging to power brick; Otherwise perform the step entering corresponding process or state.
In order to ensure to enter charges preheat process, or enter charging insulating process, or enter normal temperature charged state, or enter charging precooling process, or before entering charging cooling procedure, the power brick of corresponding process or state is in operating state of charging normally, the maximum temperature difference of power brick corresponding process or state can be detected, if the maximum temperature difference of corresponding process or state is more than or equal to the temperature difference threshold value of setting, damaging or other faults appears in the battery cell in the power brick of then corresponding process or state, should stop charging to power brick and overhauling, otherwise enter corresponding process or the state power brick Chargeable heat management process that also execution is corresponding.Carry out the judgement of the temperature difference threshold size of described maximum temperature difference and setting, avoid damage or have fail battery bag to charge by force, the life-span of battery and the fail safe of battery can be improved.
Embodiment 2
In the present embodiment, to the present invention adopt the 5th generation pure electric vehicle power brick carry out Chargeable heat management control, selected battery is nickle cobalt lithium manganate battery.In the present embodiment, detect by carrying out 100 experiments to power brick, and carry out reductive analysis, obtain following data result: low temperature critical value T
lC=0 DEG C, high temperature critical value T
hC=40 DEG C, low temperature threshold T
lT=-8 DEG C, the first insulation transition temperature Δ TS1=5 DEG C, the second insulation transition temperature Δ TS2=2 DEG C, the first charging transition temperature Δ TC1=2 DEG C, the second charging transition temperature Δ TC2=2 DEG C, the 3rd charging transition temperature Δ TC3=2 DEG C, the 4th charging transition temperature Δ TC4=2 DEG C, the first cooling transition temperature Δ TD1=2 DEG C, the second cold insulation but temperature Δ TD2=2 DEG C.By above-mentioned market demand in the control method in embodiment 1, then can complete and the power brick Chargeable heat management in the present embodiment is controlled.
Mode above only by illustrating describes some one exemplary embodiment of the present invention, undoubtedly, for those of ordinary skill in the art, when without departing from the spirit and scope of the present invention, can revise described embodiment by various different mode.Therefore, above-mentioned accompanying drawing is illustrative with being described in essence, should not be construed as the restriction to the claims in the present invention protection range.
Claims (10)
1. a Chargeable heat management control method for power brick, is characterized in that, comprising:
After entering power brick charge mode, detect the temperature of multiple zones of different in power brick in real time, obtain current maximum temperature T
maxwith current minimum temperature T
min, and zones of different between maximum temperature difference;
If maximum temperature difference is more than or equal to the temperature difference threshold value of setting, then stop charging to power brick;
Otherwise, judge whether low temperature critical value T
lC≤ current minimum temperature T
min, and current maximum temperature T
max≤ high temperature critical value T
hC;
If so, then power brick is made to enter normal temperature charged state;
Otherwise, according to current maximum temperature T
maxwith current minimum temperature T
minheat management control is carried out to power brick, specifically comprises:
If current minimum temperature T
min< low temperature threshold T
lTthen by making power brick enter normal temperature charged state after charges preheat process and charging insulating process, stop in charges preheat process power brick charging and Fast Heating is carried out to power brick, power brick being charged in charging insulating process and low speed heating simultaneously;
If low temperature threshold T
lT≤ current minimum temperature T
min< low temperature critical value T
lC, then by making power brick enter normal temperature charged state after charging insulating process.
2. control method according to claim 1, is characterized in that, described by making power brick enter normal temperature charged state after charges preheat process and charging insulating process, comprising:
In charges preheat process, if current minimum temperature T
minrise the first insulation transition temperature Δ T
s1, then charging insulating process is entered;
In charging insulating process, if current minimum temperature T
minrise the first charging transition temperature Δ T
c1, then normal temperature charged state is entered.
3. control method according to claim 2, is characterized in that, described method also comprises:
In normal temperature charged state, if current minimum temperature T
mindecline the second charging transition temperature Δ T
c2, then charging insulating process is entered;
At charging insulating process, if current minimum temperature T
mindecline the second insulation transition temperature Δ T
s2, then charges preheat process is entered.
4. the control method according to any one of claims 1 to 3, is characterized in that, described according to current maximum temperature T
maxwith current minimum temperature T
minheat management control is carried out to power brick, specifically also comprises:
If current maximum temperature T
max>=high temperature threshold value T
hTthen by making power brick enter normal temperature charged state after charging precooling process and charging cooling procedure, stop in charging precooling process power brick charging and quick heat radiating is carried out to power brick, power brick being charged in charging cooling procedure and low speed heat radiation simultaneously;
If high temperature critical value T
hCthe current maximum temperature T of <
max< high temperature threshold value T
hT, then by making power brick enter normal temperature charged state after charging cooling procedure.
5. control method according to claim 4, is characterized in that, described by making power brick enter normal temperature charged state after charging precooling process and charging cooling procedure, comprising:
In charging precooling process, if current maximum temperature T
maxdecline the first cooling transition temperature Δ T
d1, then charging cooling procedure is entered;
In charging cooling procedure, if current maximum temperature T
maxdecline the 3rd charging transition temperature Δ T
c3, then normal temperature charged state is entered.
6. control method according to claim 5, is characterized in that, described method also comprises:
In normal temperature charged state, if current maximum temperature T
maxrise the 4th charging transition temperature Δ T
c4, then charging cooling procedure is entered;
In charging cooling procedure, if current maximum temperature T
maxrise the second cooling transition temperature Δ T
d2, then charging precooling process is entered.
7. control method according to claim 6, is characterized in that, described method also comprises:
Before entering charges preheat process or entering charging insulating process or enter normal temperature charged state or enter charging precooling process or enter charging cooling procedure, detect maximum temperature difference and whether be more than or equal to the temperature difference threshold value of setting;
If so, then stop charging to power brick; Otherwise perform the step entering corresponding process or state.
8. control method according to claim 6, is characterized in that, described method comprises:
The heating power of described Fast Heating is greater than the heating power of described low speed heating;
The heat radiation power of described quick heat radiating is greater than the heat radiation power of described low speed heat radiation;
The charging current of described normal temperature charged state is greater than the charging current of charging insulating process;
The charging current of described normal temperature charged state is greater than the charging current of charging cooling procedure.
9. control method according to claim 6, is characterized in that, described method comprises:
Described first insulation transition temperature Δ T
s1>=described second insulation transition temperature Δ T
s2;
Described first charging transition temperature Δ T
c1>=described second charging transition temperature Δ T
c2;
Described 3rd charging transition temperature Δ T
c3>=described 4th charging transition temperature Δ T
c4;
Described first cooling transition temperature Δ T
d1>=described second cooling transition temperature Δ T
d2.
10. control method according to claim 6, is characterized in that, described battery is nickle cobalt lithium manganate battery, described low temperature critical value T
lC=0 DEG C, high temperature critical value T
hC=40 DEG C, low temperature threshold T
lT=-8 DEG C, the first insulation transition temperature Δ T
s1=5 DEG C, the second insulation transition temperature Δ T
s2=2 DEG C, the first charging transition temperature Δ T
c1=2 DEG C, the second charging transition temperature Δ T
c2=2 DEG C, the 3rd charging transition temperature Δ T
c3=2 DEG C, the 4th charging transition temperature Δ T
c4=2 DEG C, the first cooling transition temperature Δ T
d1=2 DEG C, the second cold insulation but temperature Δ T
d2=2 DEG C.
Priority Applications (1)
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| CN105922880A (en) * | 2016-05-03 | 2016-09-07 | 北京新能源汽车股份有限公司 | Charging control method and system for power battery of electric automobile |
| CN105958138A (en) * | 2016-06-29 | 2016-09-21 | 福建船政交通职业学院 | Thermal management method for lithium battery management system |
| CN107863576A (en) * | 2017-10-10 | 2018-03-30 | 南京金龙新能源汽车研究院有限公司 | A kind of lithium ion battery heat management control method |
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| CN108258758A (en) * | 2018-01-16 | 2018-07-06 | 知豆电动汽车有限公司 | A kind of system and method to be charged by DC/DC converters for 12V intelligent accummulators |
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| CN110767958A (en) * | 2019-10-23 | 2020-02-07 | 合肥国轩高科动力能源有限公司 | Method for controlling temperature difference by heating power battery |
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| CN105958138A (en) * | 2016-06-29 | 2016-09-21 | 福建船政交通职业学院 | Thermal management method for lithium battery management system |
| CN105958138B (en) * | 2016-06-29 | 2023-08-11 | 福建船政交通职业学院 | Thermal management method of lithium battery management system |
| WO2018098743A1 (en) * | 2016-11-30 | 2018-06-07 | 深圳益强信息科技有限公司 | Data processing method and system based on internet of things |
| CN107863576A (en) * | 2017-10-10 | 2018-03-30 | 南京金龙新能源汽车研究院有限公司 | A kind of lithium ion battery heat management control method |
| CN108258758A (en) * | 2018-01-16 | 2018-07-06 | 知豆电动汽车有限公司 | A kind of system and method to be charged by DC/DC converters for 12V intelligent accummulators |
| CN109004293B (en) * | 2018-06-12 | 2020-11-10 | 南京骏睿新能源汽车科技有限公司 | Size cycle control method for thermal management module of power battery liquid cooling system |
| CN109004293A (en) * | 2018-06-12 | 2018-12-14 | 南京骏睿新能源汽车科技有限公司 | Power battery liquid cooling system thermal management module large and small cycles control method |
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| CN110504731A (en) * | 2019-09-05 | 2019-11-26 | 广州极飞科技有限公司 | Battery charging control method, device, electronic equipment and storage medium |
| CN110600831A (en) * | 2019-09-20 | 2019-12-20 | 爱驰汽车有限公司 | Temperature control method and system for battery pack, electronic device and storage medium |
| CN110600831B (en) * | 2019-09-20 | 2021-07-16 | 爱驰汽车有限公司 | Temperature control method and system for battery pack, electronic device and storage medium |
| CN110767958A (en) * | 2019-10-23 | 2020-02-07 | 合肥国轩高科动力能源有限公司 | Method for controlling temperature difference by heating power battery |
| CN110767958B (en) * | 2019-10-23 | 2021-02-09 | 合肥国轩高科动力能源有限公司 | Method for controlling temperature difference by heating power battery |
| CN111439127A (en) * | 2019-12-31 | 2020-07-24 | 蜂巢能源科技有限公司 | Vehicle and battery pack fault detection method and device |
| CN116231172A (en) * | 2022-12-27 | 2023-06-06 | 重庆三峡时代能源科技有限公司 | Battery heat management method, device, equipment and storage medium |
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