CN113036248A - All-solid-state lithium battery temperature control method and system for inhibiting growth of lithium dendrites - Google Patents
All-solid-state lithium battery temperature control method and system for inhibiting growth of lithium dendrites Download PDFInfo
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- CN113036248A CN113036248A CN202110543084.3A CN202110543084A CN113036248A CN 113036248 A CN113036248 A CN 113036248A CN 202110543084 A CN202110543084 A CN 202110543084A CN 113036248 A CN113036248 A CN 113036248A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/443—Methods for charging or discharging in response to temperature
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
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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
Abstract
The invention discloses a temperature control method and a system for an all-solid-state lithium battery for inhibiting growth of lithium dendrite, wherein after a charging instruction is received, the temperature in a battery compartment where the all-solid-state lithium battery is located is raised to a preset charging temperature, a charging circuit is switched on to start charging, and as the preset charging temperature is higher than the external environment temperature, the ionic conductivity of all-solid-state electrolyte is improved and the rate capability is improved in the charging process, and meanwhile, the Young modulus of metal lithium is reduced, the diffusion capability is increased, and the generation of lithium dendrite is effectively inhibited; after the all-solid-state lithium battery is charged, the internal temperature of the battery compartment is continuously detected, the temperature in the compartment is controlled to be above the working preset temperature, so that the solid electrolyte can keep better ion transport performance, the influence of environmental temperature change on the start of the all-solid-state lithium battery is avoided, and the ion conductivity of the all-solid-state lithium battery in a discharging stage can be improved. By controlling the temperature in stages, the working performance of the all-solid-state lithium battery is effectively improved on the basis of low energy consumption.
Description
Technical Field
The invention relates to the technical field of all-solid-state lithium batteries, in particular to a temperature control method and system for an all-solid-state lithium battery for inhibiting growth of lithium dendrites.
Background
The all-solid-state lithium battery is the mainstream trend of battery development, and compared with a commercial liquid-state lithium ion battery, the solid electrolyte used by the all-solid-state battery has the advantages of incombustibility, no corrosion, no volatilization and no leakage, so that the all-solid-state lithium battery has better safety and longer service life. In addition, an all-solid lithium battery has a higher energy density than a liquid lithium ion battery, and is therefore more suitable for use as an in-vehicle battery or an aircraft battery. However, the all-solid-state lithium battery still has some problems in practical use, firstly, the ion conductivity of the solid electrolyte is generally lower than that of the liquid electrolyte due to the limitation of the ion diffusion capacity, and the lower ion conductivity significantly affects the rate capability of the all-solid-state lithium battery. Secondly, voids are present in the solid electrolyte and lithium dendrites deposited at the negative electrode may penetrate the electrolyte, resulting in short circuit failure of the battery. Therefore, the improvement of the ion conductivity of the solid electrolyte and the reduction of the generation of lithium dendrites become problems to be solved in the development of the all-solid-state lithium battery.
The existing battery temperature control system is designed for liquid lithium ion batteries, so that the liquid lithium ion batteries need to be continuously cooled during operation in order to avoid fire risks, and the design of the temperature control system is completely different from the requirements of all-solid-state lithium batteries. Although the related studies on the influence of temperature on the performance of all-solid-state lithium batteries have been carried out in the prior art, the current studies have at least the following drawbacks:
firstly, some current researches only aim at all-solid-state lithium batteries used as vehicle-mounted batteries and aircraft batteries, and neglect temperature control of all-solid-state lithium batteries under the condition of non-severe temperature in the scene of operation at extremely low ambient temperature;
secondly, temperature compensation is only carried out before charging of the all-solid-state lithium battery is started, and temperature control in the whole charging process after charging is started is ignored;
thirdly, the prior art ignores the necessity of temperature control in the discharging process of the all-solid-state lithium battery and the non-charging and non-discharging standing state;
fourth, only a conceptual temperature control strategy for preferentially increasing the temperature of the battery working environment in a severe cold environment is proposed in the prior art, and the current research considers the charging start efficiency and the electric energy loss for heating, and correspondingly proposes a relatively typical temperature increase target value of about 15 ℃, but the temperature increase value is not measured through experiments, and the purpose of effectively inhibiting the growth of lithium dendrites cannot be achieved.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a temperature control method and a system for an all-solid-state lithium battery for inhibiting the growth of lithium dendrites, and the technical scheme is as follows:
on one hand, the invention provides an all-solid-state lithium battery charging and discharging temperature control method for inhibiting the growth of lithium dendrites, which is based on the temperature control of all-solid-state lithium battery in stages in the processes of charging, standing and discharging:
if an instruction for charging the all-solid-state lithium battery is received, controlling the charging circuit to be connected before the temperature in the battery compartment where the all-solid-state lithium battery is located is not less than a first temperature threshold, keeping the temperature in the battery compartment not less than the first temperature threshold in the charging process, and continuously controlling the temperature in the battery compartment not less than a second temperature threshold after the charging process is finished, wherein the first temperature threshold is set within a range of 310K to 450K, and the second temperature threshold is set within a range of 280K to 450K;
if an instruction for discharging the all-solid-state lithium battery is received, the discharging circuit is switched on the premise that the temperature in the battery compartment where the all-solid-state lithium battery is located is not smaller than a third temperature threshold, the temperature in the battery compartment is not smaller than the third temperature threshold in the discharging process, and the temperature in the battery compartment is continuously controlled to be not smaller than a second temperature threshold after the discharging process is finished, wherein the set range of the second temperature threshold is 280K-450K, and the set value of the third temperature threshold is larger than or equal to the second temperature threshold.
Further, the instruction for discharging the all-solid-state lithium battery includes a target discharge power, and the controlling of the temperature in the battery compartment during the discharging process according to the target discharge power includes: the higher the target discharge power is, the higher the temperature in the battery compartment in the discharge process is controlled.
Further, an electric heating element for heating the battery compartment and a temperature sensor for detecting the temperature in the battery compartment are arranged, and if the temperature detected by the temperature sensor is lower than a corresponding temperature threshold value, the electric heating element and a power supply circuit are switched on.
Further, when an instruction for charging the all-solid-state lithium battery is received, if the temperature sensor detects that the temperature value is higher than or equal to a first temperature threshold value, the charging is directly started; if the temperature sensor detects that the temperature value is lower than a first temperature threshold value, controlling the electric heating element to work until the temperature value reaches the first temperature threshold value and then starting charging;
during the period from the start of charging to the end of the charging process, if the temperature sensor detects that the temperature value is higher than or equal to a first temperature threshold value, controlling the electric heating element to stop working; and if the temperature sensor detects that the temperature value is lower than a first temperature threshold value, controlling the electric heating element to work until the temperature value reaches the first temperature threshold value.
Further, the power supply is an external power supply or the all-solid-state lithium battery in a battery compartment, wherein the external power supply is a renewable energy power supply assembly or a non-renewable energy power supply assembly.
Further, the setting range of the first temperature threshold is 330K to 450K.
On the other hand, the invention provides another temperature control method for inhibiting the growth of the lithium dendrite of the all-solid-state lithium battery, which is used for controlling the temperature based on the non-charging and non-discharging standing process of the all-solid-state lithium battery:
and under the condition that the all-solid-state lithium battery is not in a charging state or a discharging state, controlling the temperature in the battery compartment where the all-solid-state lithium battery is located to be more than or equal to 280K and less than or equal to 450K.
Further, an electric heating element for heating the battery compartment and a temperature sensor for detecting the temperature in the battery compartment are arranged, and when the all-solid-state lithium battery is in a standing process, if the temperature value detected by the temperature sensor is lower than 280K, a circuit of the electric heating element and a power supply is switched on; the power supply is an external power supply or the all-solid-state lithium battery in a battery bin, wherein the external power supply is a renewable energy power supply assembly or a non-renewable energy power supply assembly.
Further, under the condition that the all-solid-state lithium battery is not in a charging state or a discharging state, controlling the temperature in the battery compartment where the all-solid-state lithium battery is located to be greater than or equal to 283.15K and less than or equal to 450K.
In another aspect, the present invention provides a first method for controlling a charging temperature to suppress dendritic growth of lithium in an all-solid lithium battery, the method includes starting a charging process under the premise that a temperature in a battery compartment where the all-solid lithium battery is located is greater than or equal to 330K and less than or equal to 450K, and maintaining the temperature in the battery compartment to be greater than or equal to 310K and less than or equal to 450K before the charging process is completed.
In addition, the invention provides a second charging temperature control method for inhibiting the growth of the dendritic crystal of the lithium of the all-solid-state lithium battery, wherein if an instruction for charging the all-solid-state lithium battery is received, whether the temperature in a battery compartment where the all-solid-state lithium battery is located is smaller than a first temperature threshold value is judged, and if not, a charging circuit is directly connected; if yes, calculating a heating time value required by heating to the first temperature threshold according to a preset temperature model, heating the battery compartment until the required heating time value is reached, and switching on a charging circuit, wherein the set range of the first temperature threshold is 310K-450K.
Further, the preset temperature model is:
In other aspects, the present invention also provides an all solid-state lithium battery temperature control system for suppressing growth of lithium dendrites, comprising:
the battery charging and discharging module comprises an all-solid-state lithium battery, a controllable charging circuit and a discharging circuit;
the battery bin is used for placing the all-solid-state lithium battery;
the temperature sensor is used for detecting the temperature in the battery compartment;
the controllable heater is used for increasing the temperature in the battery compartment;
the control module is electrically connected with the battery charging and discharging module, the temperature sensor and the controllable heater, if the control module receives a charging instruction sent by the battery charging and discharging module and a temperature detection value sent by the temperature sensor is smaller than a first temperature threshold value, the control module controls the controllable heater to work, the control module controls the controllable charging circuit to be switched on until the temperature detection value sent by the temperature sensor reaches the first temperature threshold value, and the setting range of the first temperature threshold value is 310K-450K; and judging whether the temperature detection value sent by the temperature sensor is lower than a first temperature threshold value in real time or at regular time before the charging process is finished, if so, controlling the controllable heater to work by the control module, and keeping the temperature in the battery compartment greater than or equal to the first temperature threshold value in the charging process.
Further, on the premise that the control module does not receive a charging instruction or a discharging instruction sent by the battery charging and discharging module, and the charging circuit and the discharging circuit are not connected, if the temperature detection value sent by the temperature sensor is smaller than a second temperature threshold, the control module controls the controllable heater to work until the temperature detection value sent by the temperature sensor reaches the second temperature threshold, and the setting range of the second temperature threshold is 280K to 450K.
Further, the discharging circuit is a controllable discharging circuit, if the control module receives a discharging instruction sent by the battery charging and discharging module and a temperature detection value sent by the temperature sensor is smaller than a third temperature threshold, the control module controls the controllable heater to work until the temperature detection value sent by the temperature sensor reaches the third temperature threshold, and the control module controls to switch on the controllable discharging circuit; and judging whether the temperature detection value sent by the temperature sensor is lower than a third temperature threshold value in real time or at regular time before the discharging process is finished, if so, controlling the controllable heater to work by the control module, so that the temperature in the battery compartment is kept to be higher than or equal to the third temperature threshold value in the discharging process, and the set value of the third temperature threshold value is higher than or equal to the second temperature threshold value.
Further, the discharge instruction includes a target discharge power, and the control module controls the temperature in the battery compartment in the discharge process according to the target discharge power, including: the higher the target discharge power is, the higher the temperature in the battery compartment is controlled by the control module before the discharge process is finished.
Further, the all-solid-state lithium battery temperature control system further comprises a power supply module for supplying power to the controllable heater, wherein the power supply module is the all-solid-state lithium battery or an external power supply, and the external power supply is a renewable energy power supply assembly or a non-renewable energy power supply assembly.
Further, the positive electrode of the all-solid-state lithium battery comprises one or more of a sulfide positive electrode, an oxide positive electrode and a ternary material;
the electrolyte of the all-solid-state lithium battery comprises one or more of a sulfide electrolyte and an oxide electrolyte;
the cathode of the all-solid-state lithium battery comprises one or more of a metal lithium cathode, an alloy cathode, a carbon family cathode material and a lithium-free cathode;
the anode, electrolyte and cathode materials of the all-solid-state lithium battery can be modified by adopting a coating or PEO doping method.
Further, the battery compartment is provided with a heat insulation cavity, and the thermal conductivity range of a cavity wall material of the heat insulation cavity is 0.001-1.2W/(m.K); or the wall of the heat-insulating cavity of the battery compartment is made of heat-insulating ceramic materials, foaming glass materials and/or aerogel.
The technical scheme provided by the invention has the following beneficial effects:
a. the temperature of the all-solid-state lithium battery in the charging process is increased, so that the ionic conductivity of the all-solid-state electrolyte is improved, the Young modulus of the metal lithium is reduced, the diffusion capacity of the metal lithium is improved, and the generation of lithium dendrites is effectively inhibited;
b. after the charging is finished, the battery can be kept at a stable operation temperature in both a standing stage and a discharging stage, so that the influence on the normal use of the battery caused by the reduction of the ionic conductivity due to low temperature is avoided;
c. by designing the heat preservation module, the heat dissipation rate in the temperature control device can be effectively reduced, so that the aim of saving energy and controlling temperature is fulfilled;
d. in the standing/discharging stage, the all-solid-state lithium battery is directly used for supplying power, or renewable energy sources such as a solar battery and the like are used for supplying power instead of an external power supply, so that the necessary movable requirement when the all-solid-state lithium battery is put into use is met;
e. different power supplies are adopted to drive the heater in the charging stage and the standing/discharging stage, and different operating temperatures are selected, so that the consumption of the temperature control device on the energy storage of the all-solid-state lithium battery can be reduced while the working performance of the all-solid-state lithium battery is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a flowchart of a temperature control method for improving the working performance of an all-solid-state lithium battery according to an embodiment of the invention;
FIG. 2 shows the total energy consumption and the required heating time of the heater corresponding to step S1 according to the embodiment of the present inventiont 1Preset temperature following chargingT 1Schematic diagram of variations of (a);
FIG. 3 shows different preset charging temperatures corresponding to step S2 according to an embodiment of the present inventionT 1A change schematic diagram of the ion conductivity of the all-solid electrolyte and the ratio of the heating power to the battery charging power;
FIG. 4(a) is an SEM image of lithium metal deposition morphology of a negative electrode of an all-solid-state lithium battery at a preset charging temperature of 300K according to an embodiment of the invention;
FIG. 4(b) is an SEM image of lithium metal deposition morphology of a negative electrode of an all-solid-state lithium battery at a preset charging temperature of 335K according to an embodiment of the present invention;
FIG. 5 shows different preset charging temperatures according to an embodiment of the present inventionT 1Cycle life of all-solid-state lithium battery with lower uncoated pure lithium cathodet 2Changing the experimental results;
FIG. 6 is a diagram illustrating the temperature keeping time without energy consumption corresponding to step S3 according to an embodiment of the present inventiont 3Preset temperature following chargingT 1And working preset temperatureT 2Schematic diagram of variations of (a);
FIG. 7 shows different vehicle speeds corresponding to step S4 according to an embodiment of the present inventionvPreset temperature for different workT 2A change diagram of a heating power/battery discharge power ratio;
FIG. 8 shows different preset operation temperatures corresponding to step S4 according to an embodiment of the present inventionT 2Under the condition, the sustainable temperature control time when the temperature control device is driven by the all-solid-state lithium battery to heatt 4A schematic diagram;
fig. 9 is a schematic diagram of a temperature control device for improving the working performance of an all-solid-state lithium battery according to an embodiment of the invention;
FIG. 10 is a schematic diagram of a temperature control device using a renewable energy power supply assembly according to an embodiment of the present invention;
wherein the reference numerals include: 101-external power supply assembly, 102-internal power supply assembly, 103-renewable energy power supply assembly, 201-PID heater, 202-temperature sensor, 3 as heat preservation module, 4 as all-solid-state lithium battery, 401-controllable charging and discharging circuit, and 5 as control module.
Detailed Description
In order to make the technical solutions of the present invention better understood and more clearly understood by those skilled in the art, the technical solutions of the embodiments of the present invention will be described below in detail and completely with reference to the accompanying drawings. It should be noted that the implementations not shown or described in the drawings are in a form known to those of ordinary skill in the art. Additionally, while exemplifications of parameters including particular values may be provided herein, it is to be understood that the parameters need not be exactly equal to the respective values, but may be approximated to the respective values within acceptable error margins or design constraints. It is to be understood that the described embodiments are merely exemplary of a portion of the invention and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. In addition, the terms "comprises" and "comprising," and any variations thereof, in the description and claims of this invention, are intended to cover a non-exclusive inclusion, such that a process, method, apparatus, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The following describes a temperature control method and a temperature control device for improving the working performance of an all-solid-state lithium battery according to an embodiment of the present invention with reference to the accompanying drawings.
The all-solid-state lithium battery (hereinafter referred to as battery) analyzed in the embodiment is selected by taking an electric vehicle battery as a standard, the selected electrolyte is lithium sulfur phosphorus chlorine electrolyte, the average battery capacity of the electric vehicle is about 60 kW.h, the power consumption is about 14.7 kW.h/100 km, the energy density of the all-solid-state lithium battery can reach 0.9 kW.h/L, the volume of the all-solid-state lithium battery is about 67L, the size of the battery is about 17 mm × 62 mm × 64 mm by referring to half of the size of a storage battery for the electric vehicle, the battery is placed in a battery bin with a controllable heater and a heat insulation structure, the thickness of the selected heat insulation layer is 5 mm, the size of the all-solid-state lithium battery device is converted by the size at the half thickness of the heat insulation layerN 1 = 20 mm，N 2 = 65 mm，N 3= 69 mm, still be equipped with temperature sensor and control module in the battery compartment, the all solid-state lithium battery in the battery compartment has controllable charge-discharge circuit, and its corresponding interface preferably extends to the battery compartment outside or on the surface, will refer to above battery compartment as temperature control device.
Fig. 1 is a flowchart of a temperature control method for improving the operating performance of an all-solid-state lithium battery according to an embodiment of the present invention. As shown in fig. 1, after the all-solid-state lithium battery is placed in the temperature control device, the temperature control is performed in stages based on the charging, standing and discharging processes, and the temperature control method for improving the working performance of the all-solid-state lithium battery comprises the following steps:
s1, after receiving the charging instruction of the all-solid-state lithium battery, firstly detecting the internal temperature of the temperature control device, and when the internal temperature is lowAt a first temperature threshold (hereinafter referred to as a charging preset temperature)T 1) When the temperature control device is used, the external power supply or the full solid-state lithium battery in the battery bin supplies power to drive the heater, so that the internal temperature of the temperature control device is raised to the preset charging temperatureT 1。
In this embodiment, the charging preset temperatureT 1Above 310K, in another embodiment, the charging is at a predetermined temperatureT 1Higher than 330K and not more than 450K.
In this embodiment, assume that the actual temperature of the battery isTTotal heating power of the heater isqHas been heated for a time oftThe ambient temperature outside the temperature control device isT 0Charging preset temperature ofT 1The cell density isρSpecific heat of the battery isc p The volume of the battery isVThe thermal conductivity of the heat-insulating layer isλThe total heat dissipation area of the heat insulation layer isAThe thickness of the insulating layer is deltaxIn the meantime, the actual temperature change of the battery in the temperature control device is as shown in formula (1):
by solving equation (1), we can obtain:
since the judgment criterion at the end of step S1 is that the internal temperature of the temperature control device is raised to the preset charging temperatureT 1Then whenT=T 1Time required for heatingt 1Comprises the following steps:
at this time, the total energy consumed by the heater at the stage of step S1Q 1Comprises the following steps:
specific heat of batteryc p 900J/(kg. K), cell densityρIs 3500 kg/m3Volume of batteryV= 67L, ambient temperature outside the temperature control deviceT 0300K, and the heat dissipation area of the heat insulation layer is 0.01433 m2Thermal conductivity of insulating layerλ0.03W/(m.K), insulation layer thickness Deltax5 mm, total heater powerqAt 100W, FIG. 2 shows different preset charging temperaturesT 1Under the condition that the heater corresponding to step S1 consumes the total energyQ 1And required heating timet 1Schematic diagram of the variation of (1). It can be seen that even though the preset temperature is chargedT 1The required heating time is still less than 10 minutes when the temperature is up to 450K, the total energy required by the heater is less than 0.015 kW.h, and the waiting time and the energy consumption are both in a feasible range meeting the charging requirement of the electric automobile.
S2, the internal temperature of the temperature control device reachesT 1Then, the charging circuit of the all-solid-state lithium battery is switched on to start charging, and in the charging process, the heater is powered by an external power supply to keep the internal temperature of the temperature control device at the same valueT 1(ii) a By charging the all-solid-state lithium battery at high temperature, the charging efficiency can be improved, the charging time can be shortened, the metal lithium deposited on the negative electrode is softened, the diffusion performance of the lithium is improved, the lithium deposition is more uniform, and the generation of lithium dendrites is effectively inhibited.
At the stage S2, the heater power only needs to be equal to the overall heat dissipation power of the temperature control device, and the charging power of the all-solid-state lithium battery is selected to be 5kW under the condition that the selection parameters are the same as those in the step S1, so that fig. 3 shows different preset charging temperatures corresponding to the step S2 according to the embodiment of the present inventionT 1Next, a change diagram of the ion conductivity of the all-solid electrolyte and the heating power/battery charging power ratio is shown. As can be seen from fig. 3, the ion conductivity of the electrolyte of the all-solid lithium battery exponentially increases with the increase of temperature, and the temperature is controlledThe proportion of the heating power required by the device to the battery charging power is always less than 0.1%, which shows that the control method can obviously improve the battery multiplying power performance in the charging stage, is expected to realize the quick charging of the battery with higher power and higher efficiency, and meanwhile, the consumed extra energy is extremely small, and the extra charging cost is less than 0.1%.
As an example, fig. 4(a) and fig. 4(b) are SEM images further showing metal lithium deposition profiles of the negative electrode of the all-solid-state lithium battery at different preset charging temperatures according to the embodiment of the present invention; comparing the lithium deposition appearances of the lithium battery with the preset charging temperature of 300K in fig. 4(a) and the preset charging temperature of 335K in fig. 4(b), it can be seen that, as the temperature rises, the grain boundaries of the lithium metal deposition appearance of the negative electrode of the all-solid-state lithium battery in fig. 4(b) are reduced, the lithium metal deposition is more uniform, and the surface is more flat and round, which is caused by the fact that the temperature rises, the young modulus of the lithium metal is reduced, and the diffusion performance is enhanced, therefore, the temperature rise can also well inhibit the formation of lithium dendrites, has a positive effect on the stable circulation of lithium, and confirms the effect of inhibiting the growth of lithium dendrites by the control method.
To further verify the effect of the temperature range selected by the control method to improve the performance of the battery, fig. 5 shows different preset charging temperaturesT 1Cycle life of all-solid-state lithium battery with lower uncoated pure lithium cathodet 2Experimental measurements of changes. To fully illustrate the preset temperature for chargingT 1And on the influence on the cycle life of the all-solid-state lithium battery, selecting a pure lithium cathode without coating to assemble the all-solid-state battery, wherein the electrolyte thickness is 500 mu m. The pure lithium cathode without coating is easy to generate lithium dendrite at ambient temperature, short circuit occurs after 3 cycles, and under the condition, the preset temperature is chargedT 1The cycle life of the all-solid-state lithium battery is exponentially increased, and the battery is charged at a preset temperatureT 1After the voltage exceeds 360K, the experimental sample can still normally run after 120 circles of the diagram, the short circuit phenomenon is not generated all the time, and the effects of improving the charging preset temperature on inhibiting the growth of the lithium dendrite, prolonging the service life of the battery and improving the performance of the battery are fully verified. In practical application, the preparation of the all-solid-state lithium battery can select coatingThe modified lithium cathode, the alloy cathode, the carbon family cathode or the lithium-free cathode further improve the service life of the all-solid-state lithium battery. After the alloy cathode is selected to prepare the all-solid-state battery, the charging is carried out at a preset temperatureT 1The temperature is increased to more than 310K, stable circulation of more than 1000 circles can be realized, the battery life can approach 20 years by estimating the charging of the electric vehicle once per week, and the actual requirements can be well met. Thus, the charging preset temperature is selectedT 1It is higher than 310K.
S3, after the charging of the all-solid-state lithium battery is completed, continuously detecting the internal temperature of the temperature control device until the internal temperature of the temperature control device is reduced to a second temperature threshold (hereinafter referred to as a preset operating temperature)T 2）；
The working preset temperatureT 2Lower than the preset charging temperatureT 1(ii) a In this embodiment, the working preset temperatureT 2Higher than 280K and not more than 450K.
Under the same selected parameters as those in step S1, the temperature variation of the all-solid-state lithium battery can be described by equation (5):
solving equation (5) yields:
at the end of the stage S3, the temperature of the all-solid-state lithium battery is reduced toT 2Will beT=T 2Substituting the formula into the formula, the S3 stage can be obtained by solving, and the heat preservation time without additional heating energy consumptiont 2Comprises the following steps:
figure 6 corresponds to step S3 according to an embodiment of the present invention,heat retention time without energy consumptiont 3Preset temperature following chargingT 1And working preset temperatureT 2As can be seen from fig. 6, the preset charging temperatureT 1Higher, working preset temperatureT 2The lower the temperature, the longer the incubation time.
Meanwhile, according to the formula (7), it is easy to find that the preset temperature is set when the work is performedT 2Close to or even below the ambient temperature outside the temperature control deviceT 0Hour, heat preservation timet 3And the temperature tends to be infinite, the temperature control does not need to enter the S4 stage, and extra energy consumption is not needed, so that the normal work of the all-solid-state lithium battery in the standing and discharging stage can be ensured.
S4, supplying power to drive the heater to control the internal temperature of the temperature control device to beT 2In the above way, the starting of the all-solid-state lithium battery is prevented from being influenced by the change of the environmental temperature, and the ion transport performance of the all-solid-state lithium battery in the discharging stage is improved;
in step S4, the power supply method for driving the heater may be the method of supplying power by directly using the all solid-state lithium battery, or by using a power generation method using renewable energy such as a solar battery.
Assuming that the electric power consumption of the electric vehicle is 14.7 kW.h/100 km, the running speed of the electric vehicle isvAnd other parameters are consistent with those selected in step S1, FIG. 7 shows that the vehicle speed at step S4 is different according to the embodiment of the present inventionvPreset temperature for different workT 2Next, a change diagram of the heating power/battery discharge power ratio is shown. It can be seen that even at very low vehicle speeds, and at the preset operating temperatureT 2Compared with the ambient temperature outside the temperature control deviceT 0Under the condition that the voltage is higher than 40K, the ratio of the heating power to the battery discharge power is still less than 0.12%. Therefore, the energy consumption required by the temperature control device is extremely low, and the battery can be effectively ensured to be at a reasonable operation temperature.
FIG. 8 further illustrates different operational preset temperaturesT 2Under the condition, the sustainable temperature control time when the temperature control device is driven by the all-solid-state lithium battery to heatt 4The battery capacity is about 60 kW.h, as can be seen from FIG. 8, even though the operation is performed at the preset temperatureT 2Compared with the ambient temperature outside the temperature control deviceT 0The temperature control device can be always at the preset working temperature within the time of more than 700 days after the temperature is 40K higherT 2And the electrolyte is ensured to have better ionic conductivity. This shows that even if the ambient temperature of the automobile is below-30 ℃ all the year round, the battery can be kept at 10 ℃ or above all the time within the time range of nearly 2 years by adopting the temperature control device, so as to meet the requirement of emergency starting at any time.
In addition, when the renewable energy power generation method is adopted for power supply, the heater does not consume the energy stored by the battery, and the sustainable temperature control time is directly dependent on the service life of the renewable energy power supply system and is not influenced by the battery capacity.
Optionally, when the discharge power needs to be increased, a third temperature threshold (hereinafter referred to as a preset discharge temperature) may be further set according to the performance requirementT 3) When the temperature sensor detects that the internal temperature of the temperature control device is lower than or equal to the preset discharging temperatureT 3During the operation, the power supply drives the heater to maintain the internal temperature of the temperature control device at the preset discharge temperatureT 3In the above way, the ion transport performance of the all-solid-state lithium battery in the discharging stage is further improved;
the preset discharge temperatureT 3Above the working preset temperatureT 2。
Since the optional steps are substantially consistent with the heating and heat dissipation conditions corresponding to step S4, only the preset working temperatures in fig. 7 and 8 are requiredT 2Replacement by discharge preset temperatureT 3The battery temperature can be controlled to the preset discharging temperature by analysisT 3The energy consumption is proportional to the sustainable operation time.
The invention is not limited to the above embodiments, and the temperature control method for improving the working performance of the all-solid-state lithium battery provided by the invention can be widely applied to the field and other fields related to the field, and can be implemented by adopting other various embodiments. For example, the temperature of the all-solid-state battery is regulated and controlled in stages based on the working state of the battery so as to improve the working performance of the battery, improve the working performance of other batteries, or simply perform heater distribution optimization, temperature control optimization and the like on the basis of the design. Therefore, the design of the invention is within the protection scope of the invention, and the design of the invention can be changed or modified simply by adopting the design idea of the invention.
In conclusion, the embodiment of the invention can effectively improve the temperature of the all-solid-state lithium battery in the charging process, so as to improve the ionic conductivity of the all-solid-state electrolyte, reduce the Young modulus of the metal lithium, improve the diffusion capacity of the metal lithium and effectively inhibit the generation of lithium dendrites; after charging is finished, the battery can be kept at a stable operation temperature in both a standing stage and a discharging stage so as to avoid the reduction of the ionic conductivity caused by low temperature and influence on the normal use of the battery; by designing the heat insulation structure, the heat dissipation rate in the temperature control device can be effectively reduced, so that the aim of saving energy and controlling temperature is fulfilled; different power supplies are adopted to drive the heater in the charging stage and the standing/discharging stage, different operating temperatures are selected, and the consumption of the temperature control device on the energy storage of the all-solid-state lithium battery can be reduced while the working performance of the all-solid-state lithium battery is improved through staged temperature control.
In addition, when the renewable energy power generation method is adopted for power supply, the heater does not consume the energy stored by the battery, and the sustainable temperature control time is directly dependent on the service life of the renewable energy and is not influenced by the battery capacity. In the standing/discharging stage, the all-solid-state lithium battery is directly used for supplying power, or renewable energy sources such as a solar battery and the like are used for supplying power instead of an external power supply, so that the necessary movable requirement when the all-solid-state lithium battery is put into use is met.
Next, a temperature control device for improving the operating performance of an all-solid lithium battery according to an embodiment of the present invention will be described with reference to fig. 9.
Fig. 9 is a schematic diagram of a temperature control device for improving the working performance of an all-solid-state lithium battery according to an embodiment of the invention;
the temperature control device for improving the working performance of the all-solid-state lithium battery comprises: the device comprises a double-path power supply module, a controllable heating module, a heat preservation module, a battery charging and discharging module and a control module.
The double-circuit power supply module comprises an external power supply assembly 101 capable of using an external power supply and an internal power supply assembly 102 capable of using an internal all-solid-state lithium battery to directly supply power;
the controllable heating module comprises a PID heater 201 and a temperature sensor 202, and the internal temperature of the temperature control device is controlled to be at a preset temperature according to the charging and discharging stage of the all-solid-state lithium batteryT 1Or maintained at a predetermined temperatureT 2The above;
the heat preservation module 3 is a heat preservation cavity which is made of low-heat-conductivity heat preservation materials and can be used for placing the all-solid-state lithium battery, so that electric energy required by heating the cavity is saved;
the battery charging and discharging module comprises an all-solid-state lithium battery 4 and an all-solid-state lithium battery controllable charging and discharging circuit 401;
the control module 5 is used for controlling the two-way power supply module, the controllable heating module and the battery charging and discharging module so as to realize staged temperature control according to the charging and discharging stage and the internal temperature of the temperature control device.
The dual-path power supply module may further include a renewable energy power supply module such as a solar cell power supply module, and at this time, a schematic diagram of the temperature control device using the renewable energy power supply module is shown in fig. 10. Compared with fig. 9, the design of fig. 10 replaces the internal power supply component 102 of the dual power supply module, which can be directly powered using an internal all-solid-state lithium battery, with the renewable energy power supply component 103. Obviously, a three-way power supply module (not shown) may also be provided, that is, the three-way power supply module includes an external power supply component 101, an internal power supply component 102 directly powered by using an internal all-solid-state lithium battery, and a renewable energy power supply component 103.
In addition, the temperature control device for the operating performance of the all-solid-state lithium battery according to the above embodiment of the present invention may further have the following additional technical features:
the temperature measured by the temperature sensor in the controllable heating module can be used as a judgment standard for controlling the on or off of the double-circuit power supply module and the battery charging and discharging module:
specifically, after receiving the charging instruction of the all-solid-state lithium battery, the temperature sensor 202 detects that the internal temperature of the temperature control device is lower than the preset charging temperatureT 1When the temperature control device is used, the control module 5 preferably controls to start the external power supply assembly 101 of the double-circuit power supply module, drives the controllable heating module PID heater 201, and raises the internal temperature of the temperature control device to the preset charging temperatureT 1(ii) a In the charging stage, because an external power supply can be adopted and the heater is driven by using larger power, the inside of the temperature control device can be kept at higher temperature, at the moment, the all-solid-state lithium battery can be charged at high temperature so as to improve the ionic conductivity of all-solid-state electrolyte during charging, further improve the charging efficiency, soften the metal lithium deposited by the negative electrode, improve the diffusion performance of the lithium, enable the lithium deposition to be more uniform and effectively inhibit the generation of lithium dendrites.
The temperature sensor 202 detects that the internal temperature of the temperature control device reachesT 1Then, the control module 5 controls to switch on the battery controllable charging and discharging circuit 401, and if the temperature is detected to be reduced to the temperature during the charging process of the batteryT 1Then, the external power supply component of the two-way power supply module is started to drive the PID heater 201 of the controllable heating module, so that the internal temperature of the temperature control device is kept at the temperatureT 1；
After the charging of the all-solid-state lithium battery is completed, the control module 5 controls to close the battery controllable charging and discharging circuit 401, and the temperature sensor 202 detects and continuously detects the internal temperature of the temperature control device until the internal temperature of the temperature control device is reduced to the preset working temperatureT 2；
The temperature sensor 202 detects that the internal temperature of the temperature control device is reduced toT 2Then, the control module 5 controls the on/off of the built-in power supply assembly 102 or the renewable energy power supply assembly 103 to drive the PID heater 201 to control the internal temperature of the temperature control device to be within the range ofT 2The above; after charging is finished, the battery is kept at a stable operation temperature in both a standing stage and a discharging stage so as to avoid the reduction of ionic conductivity caused by low temperature and influence on the normal use of the battery; at this time, it is difficult to use the external power source due to the non-charging stageThe power is supplied by all solid-state lithium battery or other renewable energy power supply device, so that the operating temperature is properly reduced compared with the charging stage to avoid excessive energy consumption.
Optionally, when the discharge power needs to be increased, the preset discharge temperature can be further set according to the performance requirementT 3After the discharging stage, the temperature sensor 202 detects that the internal temperature of the temperature control device is lower than or equal to the preset discharging temperatureT 3When the temperature control device is used, the control module 5 controls the on-off control of the built-in power supply assembly 102 or the renewable energy power supply assembly 103 to drive the PID heater 201 to keep the internal temperature of the temperature control device at the preset discharging temperatureT 3The above; the preset discharge temperatureT 3Above the working preset temperatureT 2。
In order to guarantee the heat preservation and energy saving effects, the thermal conductivity of the heat preservation material adopted by the heat preservation module is lower than 1.2W/(m.K), preferably lower than 0.12W/(m.K), and the heat preservation material comprises aerogel, foamed glass, heat preservation ceramic materials and the like.
It should be noted that the foregoing explanation of the embodiment of the temperature control method for improving the working performance of the all-solid-state lithium battery is also applicable to the temperature control device for improving the working performance of the all-solid-state lithium battery in this embodiment, and details are not repeated here. Meanwhile, the arrangement of the PID heaters and the temperature sensors in fig. 9 and 10 is only shown as an example, the PID heaters and the temperature sensors may be arranged at any position in the temperature control device, or may be uniformly distributed in the temperature control device, and the number of the PID heaters and the number of the temperature sensors may be greater than or equal to one.
According to the temperature control device for improving the working performance of the all-solid-state lithium battery, which is provided by the embodiment of the invention, the all-solid-state lithium battery can be charged at the preset temperature by constructing the double-circuit power supply module, the controllable heating module, the heat preservation module and the battery charging and discharging moduleT 1High temperature charging under conditions, working preset temperatureT 2Or discharge preset temperatureT 3Discharge under controlled temperature conditions, and working preset temperatureT 2For a long time under the conditionStoring under stable temperature condition. Therefore, the ionic conductivity of the all-solid-state electrolyte can be improved, the generation of lithium dendrites is effectively inhibited, and the quick start of the battery under the condition of extremely low external environment temperature is ensured.
By adopting the method and the device for controlling the temperature of the all-solid-state lithium battery, the temperature of the all-solid-state lithium battery in the charging process can be effectively improved, so that the ionic conductivity of the all-solid-state electrolyte is improved, the Young modulus of the metal lithium is reduced, the diffusion capacity of the metal lithium is improved, and the generation of lithium dendrites is effectively inhibited; after charging is finished, the battery can be kept at a stable operation temperature in both a standing stage and a discharging stage so as to avoid the reduction of the ionic conductivity caused by low temperature and influence on the normal use of the battery; in addition, by designing the heat preservation module, the heat dissipation rate in the temperature control device can be effectively reduced, so that the purpose of energy conservation and temperature control is achieved; the built-in power supply assembly and the renewable energy power supply assembly which can be directly powered by the internal all-solid-state lithium battery are designed, and external power supplies are not used for supplying power, so that the temperature control device can be independently operated without other devices after the all-solid-state lithium battery is charged, and the necessary movable requirement when the all-solid-state lithium battery is put into use is met; different power supplies are adopted to drive the heater in the charging stage and the standing/discharging stage, different operating temperatures are selected, and by means of staged temperature control, the consumption of the temperature control device on the energy storage of the all-solid-state lithium battery can be reduced while the working performance of the all-solid-state lithium battery is improved, namely, the working performance of the all-solid-state lithium battery is effectively improved on the basis of low energy consumption.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made by those skilled in the art based on the spirit and principles of the present invention are included in the scope of the present invention.
Claims (19)
1. A full solid state lithium battery charging and discharging temperature control method for inhibiting growth of lithium dendrite is characterized in that temperature control is performed in stages based on the charging, standing and discharging processes of a full solid state lithium battery:
if an instruction for charging the all-solid-state lithium battery is received, controlling the charging circuit to be connected before the temperature in the battery compartment where the all-solid-state lithium battery is located is not less than a first temperature threshold, keeping the temperature in the battery compartment not less than the first temperature threshold in the charging process, and continuously controlling the temperature in the battery compartment not less than a second temperature threshold after the charging process is finished, wherein the first temperature threshold is set within a range of 310K to 450K, and the second temperature threshold is set within a range of 280K to 450K;
if an instruction for discharging the all-solid-state lithium battery is received, the discharging circuit is switched on the premise that the temperature in the battery compartment where the all-solid-state lithium battery is located is not smaller than a third temperature threshold, the temperature in the battery compartment is not smaller than the third temperature threshold in the discharging process, and the temperature in the battery compartment is continuously controlled to be not smaller than a second temperature threshold after the discharging process is finished, wherein the set range of the second temperature threshold is 280K-450K, and the set value of the third temperature threshold is larger than or equal to the second temperature threshold.
2. The method for controlling the charging and discharging temperature of the all-solid-state lithium battery according to claim 1, wherein the command for discharging the all-solid-state lithium battery comprises a target discharging power, and the step of controlling the temperature in the battery compartment during the discharging process according to the target discharging power comprises the steps of: the higher the target discharge power is, the higher the temperature in the battery compartment in the discharge process is controlled.
3. The all-solid-state lithium battery charging and discharging temperature control method according to claim 1, wherein an electric heating element for heating the battery compartment and a temperature sensor for detecting the temperature in the battery compartment are provided, and if the temperature sensor detects that the temperature value is lower than a corresponding temperature threshold value, a circuit of the electric heating element and a power supply source is switched on.
4. The all-solid-state lithium battery charge-discharge temperature control method according to claim 3, wherein when receiving an instruction to charge an all-solid-state lithium battery, if the temperature sensor detects that the temperature value is higher than or equal to a first temperature threshold, then directly starting charging; if the temperature sensor detects that the temperature value is lower than a first temperature threshold value, controlling the electric heating element to work until the temperature value reaches the first temperature threshold value and then starting charging;
during the period from the start of charging to the end of the charging process, if the temperature sensor detects that the temperature value is higher than or equal to a first temperature threshold value, controlling the electric heating element to stop working; and if the temperature sensor detects that the temperature value is lower than a first temperature threshold value, controlling the electric heating element to work until the temperature value reaches the first temperature threshold value.
5. The all-solid-state lithium battery charging and discharging temperature control method according to claim 3, wherein the power supply is an external power supply or the all-solid-state lithium battery in a battery compartment, and the external power supply is a renewable energy power supply assembly or a non-renewable energy power supply assembly.
6. The method according to claim 1, wherein the first temperature threshold is set to 330K to 450K.
7. A temperature control method for inhibiting the growth of lithium dendrites of an all-solid-state lithium battery is characterized in that the temperature control is carried out based on the non-charging and non-discharging standing process of the all-solid-state lithium battery:
and under the condition that the all-solid-state lithium battery is not in a charging state or a discharging state, controlling the temperature in the battery compartment where the all-solid-state lithium battery is located to be more than or equal to 280K and less than or equal to 450K.
8. The temperature control method according to claim 7, wherein an electric heating element for heating the battery compartment and a temperature sensor for detecting the temperature in the battery compartment are provided, and in the process of still standing the all-solid-state lithium battery, if the temperature sensor detects that the temperature value is lower than 280K, a circuit between the electric heating element and a power supply is switched on; the power supply is an external power supply or the all-solid-state lithium battery in a battery bin, wherein the external power supply is a renewable energy power supply assembly or a non-renewable energy power supply assembly.
9. The temperature control method according to claim 7, wherein in a case where the all-solid-state lithium battery is neither in a charged state nor in a discharged state, the temperature in the battery compartment where the all-solid-state lithium battery is located is controlled to be greater than or equal to 283.15K and less than or equal to 450K.
10. A charging temperature control method for inhibiting growth of lithium dendrites of an all-solid-state lithium battery is characterized in that a charging process is started on the premise that the temperature in a battery compartment where the all-solid-state lithium battery is located is controlled to be greater than or equal to 330K and smaller than or equal to 450K, and the temperature in the battery compartment is kept to be greater than or equal to 310K and smaller than or equal to 450K before the charging process is finished.
11. A charging temperature control method for inhibiting growth of lithium dendrites of an all-solid-state lithium battery is characterized in that if an instruction for charging the all-solid-state lithium battery is received, whether the temperature in a battery compartment where the all-solid-state lithium battery is located is smaller than a first temperature threshold value is judged, and if not, a charging circuit is directly switched on; if yes, calculating a heating time value required by heating to the first temperature threshold according to a preset temperature model, heating the battery compartment until the required heating time value is reached, and switching on a charging circuit, wherein the set range of the first temperature threshold is 310K-450K.
12. The charging temperature control method according to claim 11, wherein the preset temperature model is:
13. An all solid-state lithium battery temperature control system that suppresses lithium dendrite growth, comprising:
the battery charging and discharging module comprises an all-solid-state lithium battery, a controllable charging circuit and a discharging circuit;
the battery bin is used for placing the all-solid-state lithium battery;
the temperature sensor is used for detecting the temperature in the battery compartment;
the controllable heater is used for increasing the temperature in the battery compartment;
the control module is electrically connected with the battery charging and discharging module, the temperature sensor and the controllable heater, if the control module receives a charging instruction sent by the battery charging and discharging module and a temperature detection value sent by the temperature sensor is smaller than a first temperature threshold value, the control module controls the controllable heater to work, the control module controls the controllable charging circuit to be switched on until the temperature detection value sent by the temperature sensor reaches the first temperature threshold value, and the setting range of the first temperature threshold value is 310K-450K; and judging whether the temperature detection value sent by the temperature sensor is lower than a first temperature threshold value in real time or at regular time before the charging process is finished, if so, controlling the controllable heater to work by the control module, and keeping the temperature in the battery compartment greater than or equal to the first temperature threshold value in the charging process.
14. The system according to claim 13, wherein on the premise that the control module does not receive the charging command or the discharging command sent by the battery charging and discharging module, and the charging circuit and the discharging circuit are both in the off state, if the temperature detection value sent by the temperature sensor is smaller than a second temperature threshold, the control module controls the controllable heater to operate until the temperature detection value sent by the temperature sensor reaches the second temperature threshold, and the setting range of the second temperature threshold is 280K to 450K.
15. The system according to claim 14, wherein the discharge circuit is a controllable discharge circuit, and if the control module receives a discharge instruction sent by the battery charging and discharging module and a temperature detection value sent by the temperature sensor is smaller than a third temperature threshold, the control module controls the controllable heater to operate until the temperature detection value sent by the temperature sensor reaches the third temperature threshold, and then the control module controls the controllable discharge circuit to be turned on; and judging whether the temperature detection value sent by the temperature sensor is lower than a third temperature threshold value in real time or at regular time before the discharging process is finished, if so, controlling the controllable heater to work by the control module, so that the temperature in the battery compartment is kept to be higher than or equal to the third temperature threshold value in the discharging process, and the set value of the third temperature threshold value is higher than or equal to the second temperature threshold value.
16. The system according to claim 15, wherein the discharge command includes a target discharge power, and the control module controls the temperature in the battery compartment during the discharge process according to the target discharge power includes: the higher the target discharge power is, the higher the temperature in the battery compartment is controlled by the control module before the discharge process is finished.
17. The system according to claim 13, further comprising a power supply module for supplying power to the controllable heater, wherein the power supply module is the all-solid-state lithium battery itself or an external power supply, and wherein the external power supply is a renewable energy power supply component or a non-renewable energy power supply component.
18. The all-solid-state lithium battery temperature control system according to claim 13, wherein the positive electrode of the all-solid-state lithium battery comprises one or more of a sulfide positive electrode, an oxide positive electrode, a ternary material;
the electrolyte of the all-solid-state lithium battery comprises one or more of a sulfide electrolyte and an oxide electrolyte;
the cathode of the all-solid-state lithium battery comprises one or more of a metal lithium cathode, an alloy cathode, a carbon family cathode material and a lithium-free cathode.
19. The all-solid-state lithium battery temperature control system according to claim 13, wherein the battery compartment has a thermal insulation cavity, and the thermal conductivity of the material of the cavity wall of the thermal insulation cavity is in the range of 0.001 to 1.2W/(m-K); or the wall of the heat-insulating cavity of the battery compartment is made of heat-insulating ceramic materials, foaming glass materials and/or aerogel.
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| CN104157929A (en) * | 2014-07-28 | 2014-11-19 | 李玉峰 | Low-temperature protection package for lithium battery |
| CN105098899A (en) * | 2015-07-31 | 2015-11-25 | 深圳市大疆创新科技有限公司 | Charging box, charging box control method and movable platform |
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| CN112219334A (en) * | 2018-12-18 | 2021-01-12 | 株式会社Lg化学 | Apparatus and method for controlling charging of secondary battery pack |
| CN110086222A (en) * | 2019-04-29 | 2019-08-02 | 努比亚技术有限公司 | A kind of charging/discharging thereof, device and mobile terminal |
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| CN116088607A (en) * | 2023-01-17 | 2023-05-09 | 上海艾临科智能科技有限公司 | Energy storage device-oriented temperature control method and device, electronic equipment and storage medium |
| CN116088607B (en) * | 2023-01-17 | 2023-10-13 | 上海艾临科智能科技有限公司 | Energy storage device-oriented temperature control method and device, electronic equipment and storage medium |
| CN116936971A (en) * | 2023-09-15 | 2023-10-24 | 中石油深圳新能源研究院有限公司 | Full-solid-state lithium battery charging temperature control method |
| CN116936971B (en) * | 2023-09-15 | 2024-01-05 | 中石油深圳新能源研究院有限公司 | Full-solid-state lithium battery charging temperature control method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114267891B (en) | 2024-04-19 |
| CN114267891A (en) | 2022-04-01 |
| CN113036248B (en) | 2021-10-22 |
| CN114243133A (en) | 2022-03-25 |
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