CN114361631A - Energy storage system thermal management method, device, equipment and storage medium - Google Patents
Energy storage system thermal management method, device, equipment and storage medium Download PDFInfo
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Abstract
The application relates to a thermal management method, a device, equipment and a storage medium of an energy storage system, which are used in the technical field of energy storage systems, wherein the method comprises the following steps: acquiring actual temperature information corresponding to each battery, wherein the actual temperature information comprises an actual temperature value and position information corresponding to each battery; comparing the actual temperature value corresponding to each battery with a preset standard temperature range; if the actual temperature value is greater than the preset standard temperature range, controlling the preset air conditioner to perform cooling operation until the actual temperature value is within the preset standard temperature range; acquiring actual temperature information corresponding to the central battery according to the position information; comparing the actual temperature information corresponding to the central battery with the standard temperature range; and if so, controlling the air conditioner to perform cooling operation until the actual temperature information corresponding to the central battery is within the preset standard temperature range. The application has the technical effects that: so that each cell in the battery pack is within a standard temperature range.
Description
Technical Field
The present disclosure relates to the field of energy storage systems, and in particular, to a method, an apparatus, a device, and a storage medium for thermal management of an energy storage system.
Background
The energy storage system is a part of an object or a space range drawn for determining a study object when analyzing an energy storage process. Existing energy storage systems may be conserved by storing existing energy as chemical energy of the battery.
In the process of using the energy storage system, the battery as the energy storage main body generates heat, and temperature regulation equipment such as a fan and an air conditioner is usually needed to regulate the temperature of the battery, so that the battery works at a proper temperature.
During the use of the energy storage system, the inventor finds that the technology at least has the following problems: the energy storage system generally adopts the structure of a battery pack to store energy, generally adopts the actual working temperature of the battery pack as the actual working temperature of each battery, and cannot give consideration to the actual working temperature of each battery in the battery pack, so that the problem of battery damage in the battery pack is easily caused.
Disclosure of Invention
In order to solve the problem that an energy storage system cannot take into account each battery in a battery pack and easily causes damage to a central battery, the application provides an energy storage system thermal management method, device, equipment and storage medium.
In a first aspect, the present application provides an energy storage system thermal management method, which adopts the following technical scheme: the method comprises the following steps: acquiring actual temperature information corresponding to each battery, wherein the actual temperature information comprises an actual temperature value and position information corresponding to each battery;
comparing the actual temperature value corresponding to each battery with a preset standard temperature range;
if the actual temperature value is larger than the preset standard temperature range, controlling a preset air conditioner to perform cooling operation until the actual temperature value is within the preset standard temperature range;
acquiring actual temperature information corresponding to a central battery according to the position information, wherein the central battery is a battery positioned in the central position of the battery pack;
comparing the actual temperature information corresponding to the central battery with the standard temperature range;
and if the actual temperature information corresponding to the central battery is larger than the preset standard temperature range, controlling the air conditioner to perform cooling operation until the actual temperature information corresponding to the central battery is within the preset standard temperature range.
According to the technical scheme, due to the aggregation effect, under the same heat dissipation condition, the actual temperature value of the battery corresponding to the central position is the maximum value of the battery pack, and through comparing the actual temperature value of the central position with the standard temperature range, when the actual temperature value of the battery corresponding to the central position is within the standard temperature range, the actual temperature values of the batteries corresponding to the other positions are within the standard temperature range; and when the actual temperature information corresponding to the battery at the central position is out of the standard temperature range, controlling the air conditioner to continue cooling until the actual temperature value corresponding to the central battery is in the standard temperature range. The possibility that the temperature of the central cell is within the standard temperature range when the temperature of the battery pack is measured is reduced, so that each cell in the battery pack is within the standard temperature range.
In a specific implementation scheme, acquiring an actual temperature change rate corresponding to the central battery within a preset time;
comparing the actual temperature change rate with a preset standard temperature change range;
and if the actual temperature change rate is larger than the standard temperature change range, controlling the air conditioner to perform cooling operation until the actual temperature change rate of the central battery is within the standard temperature change range.
Through the technical scheme, the actual temperature change rate of the central battery is compared with the preset standard change range within the preset time, when the actual temperature change rate of the central battery is larger than the standard temperature change range, the air conditioner is controlled to perform cooling operation, the possibility that the central battery works outside the standard temperature range is reduced, the central battery works within the standard temperature range constantly, and then the whole battery pack is guaranteed to work within the standard temperature range.
In a specific embodiment, if the actual temperature change rate is greater than the standard temperature change range, the method includes:
acquiring actual temperature information of a central battery, and calculating limit overload time according to the actual temperature information and an actual temperature change rate, wherein the limit overload time is time corresponding to the maximum value of the actual temperature information in a standard temperature range after the actual temperature information is increased under the actual temperature change rate;
acquiring actual overload time corresponding to the actual temperature change rate greater than the standard temperature change range;
judging whether the actual overload time reaches the limit overload time or not; and if so, controlling the air conditioner to perform cooling operation until the actual temperature change rate is within the standard temperature change range.
According to the technical scheme, when the actual temperature change rate is larger than the standard temperature change rate range, firstly, the limit overload time required for the actual temperature value to reach the maximum value of the standard temperature range under the actual temperature change rate is calculated, the actual overload time of which the actual temperature change rate is larger than the standard temperature change rate range is counted, and whether the actual overload time reaches the limit overload time is judged; and if so, controlling the air conditioner to perform cooling operation. And in the limit overload time, the relation between the actual temperature change rate and the standard temperature change rate range is not considered, and when the actual temperature information is within the preset value of the standard temperature change rate range, the actual temperature change rate is allowed to exceed the standard temperature change rate range.
In a specific possible implementation, the comparing the actual temperature value corresponding to each battery with the preset standard temperature range includes:
acquiring actual environment temperature information, wherein the actual environment temperature information comprises an actual environment temperature value;
inquiring an environment standard temperature range corresponding to an actual environment temperature value in a preset environment standard temperature library according to the actual environment temperature value, wherein the environment standard temperature library comprises the environment temperature value and the environment standard temperature range corresponding to the environment temperature value;
replacing the environmental standard temperature range with a preset standard temperature range;
and comparing the actual temperature value corresponding to each battery with a preset standard temperature range.
Through the technical scheme, when the actual temperature value is compared with the preset standard temperature range, the actual environment temperature is obtained, different environment temperatures and the environment standard temperature range corresponding to the environment temperature are stored in the preset environment standard temperature library, the environment standard temperature range corresponding to the actual environment temperature is inquired in the preset environment standard temperature library according to the obtained actual environment temperature, and the corresponding environment standard temperature range is replaced by the standard temperature range. Thereby improving the matching degree between the standard temperature range and the actual environment temperature.
In a specific possible embodiment, the replacing the preset standard temperature range with the environmental standard temperature range includes:
acquiring the actual output current of the whole battery pack;
inquiring a current standard temperature range corresponding to the actual output current in a preset current temperature library according to the actual output current, wherein the current temperature library comprises the current standard temperature range corresponding to the output current;
replacing the same part of the current standard temperature range and the environment standard temperature range with the environment standard temperature range;
and replacing the preset standard temperature range with the environmental standard temperature range.
According to the technical scheme, the heat productivity of the battery is considered to be related to the current output quantity, the actual output current of the whole battery pack is obtained, different current values and the current standard temperature range corresponding to the current are stored in the preset current temperature library, the corresponding current standard temperature range is obtained according to the actual output current, and the part of the current standard temperature range, which is overlapped with the environment standard temperature range, is set as the standard temperature range. On the basis of being matched with the ambient temperature, the matching degree of the standard temperature range and the output current of the battery pack is further improved, so that the standard temperature range is more matched with the actual situation.
In a specific possible embodiment, when the actual temperature information corresponding to the central battery is less than the actual temperature information corresponding to the edge battery, the edge battery is a battery positioned at the edge in the battery pack;
detecting actual resistance information corresponding to a central battery, wherein the actual resistance information comprises an actual resistance value;
comparing the actual resistance value with a preset standard resistance range;
if the actual resistance value is within the standard resistance range, acquiring position information corresponding to the edge battery, and sending alarm information of edge battery damage corresponding to the position information; otherwise, sending alarm information corresponding to the central battery.
According to the technical scheme, when the actual temperature information corresponding to the central battery is smaller than the temperature information corresponding to the edge battery, the alarm information of the damage of the edge battery is sent when the resistance corresponding to the central battery is within the standard resistance range by detecting the resistance corresponding to the central battery and comparing the resistance corresponding to the central battery with the preset standard resistance range; otherwise, sending alarm information of central battery damage. Whether the central battery has a problem or not is judged quickly and accurately by detecting the resistance of the central battery, so that a worker can repair or replace the damaged battery conveniently.
In a specific possible implementation, after the time when the actual temperature information corresponding to the center battery is less than the actual temperature information corresponding to the edge battery, the method further includes:
acquiring actual temperature information of all batteries;
arranging the position information corresponding to the battery in a descending order according to the actual temperature value;
respectively calculating the distance between the position information of the batteries in descending order and the position information corresponding to the central battery;
comparing the distance between the position information and the central battery with the distance range of the corresponding temperature in a preset temperature distance library;
if the calculated distance is out of the preset distance range, sending alarm information of the battery corresponding to the position information; otherwise, comparing the distance values corresponding to the next position information of the descending order arrangement until the position information of the descending order arrangement is completely compared.
According to the technical scheme, when the actual temperature information corresponding to the central battery is smaller than the temperature information corresponding to the edge batteries, the actual temperature information corresponding to all the batteries is obtained, the position information corresponding to different batteries is arranged in a descending order according to the actual temperature information, and the distance value between the position information corresponding to the batteries arranged in the descending order and the position information corresponding to the central battery is calculated respectively. Due to the aggregation effect, the actual temperature values between the other batteries and the central battery are in direct proportion to the distance, so that the battery with the abnormal distance in the descending temperature sequence can be quickly obtained, the worker can quickly and conveniently compare the non-central battery in the abnormal state, and alarm information related to the abnormal battery is sent.
In a second aspect, the present application provides an energy storage system thermal management device, which adopts the following technical scheme: the device comprises:
the actual temperature acquisition module is used for acquiring actual temperature information corresponding to each battery, and the actual temperature information comprises an actual temperature value and position information corresponding to each battery;
the actual temperature comparison module is used for comparing the actual temperature value corresponding to each battery with a preset standard temperature range;
the actual temperature reduction module is used for controlling a preset air conditioner to carry out cooling operation until the actual temperature value is within a preset standard temperature range if the actual temperature value is greater than the preset standard temperature range;
the central battery temperature module is used for acquiring actual temperature information corresponding to a central battery according to the position information, and the central battery is a battery positioned in the central position of the battery pack;
the central temperature comparison module is used for comparing the actual temperature information corresponding to the central battery with the standard temperature range;
and the central battery cooling module is used for controlling the air conditioner to perform cooling operation until the actual temperature information corresponding to the central battery is within the preset standard temperature range if the actual temperature information corresponding to the central battery is greater than the preset standard temperature range.
According to the technical scheme, due to the aggregation effect, under the same heat dissipation condition, the actual temperature value of the battery corresponding to the central position is the maximum value of the battery pack, and through comparing the actual temperature value of the central position with the standard temperature range, when the actual temperature value of the battery corresponding to the central position is within the standard temperature range, the actual temperature values of the batteries corresponding to the other positions are within the standard temperature range; and when the actual temperature information corresponding to the battery at the central position is out of the standard temperature range, controlling the air conditioner to continue cooling until the actual temperature value corresponding to the central battery is in the standard temperature range. The possibility that the temperature of the central cell is within the standard temperature range when the temperature of the battery pack is measured is reduced, so that each cell in the battery pack is within the standard temperature range.
In a third aspect, the present application provides a computer device, which adopts the following technical solution: comprising a memory and a processor, the memory having stored thereon a computer program that can be loaded by the processor and executed to perform any of the methods of thermal management of an energy storage system as described above.
According to the technical scheme, due to the aggregation effect, under the same heat dissipation condition, the actual temperature value of the battery corresponding to the central position is the maximum value of the battery pack, and through comparing the actual temperature value of the central position with the standard temperature range, when the actual temperature value of the battery corresponding to the central position is within the standard temperature range, the actual temperature values of the batteries corresponding to the other positions are within the standard temperature range; and when the actual temperature information corresponding to the battery at the central position is out of the standard temperature range, controlling the air conditioner to continue cooling until the actual temperature value corresponding to the central battery is in the standard temperature range. The possibility that the temperature of the central cell is within the standard temperature range when the temperature of the battery pack is measured is reduced, so that each cell in the battery pack is within the standard temperature range.
In a fourth aspect, the present application provides a computer-readable storage medium, which adopts the following technical solutions: a computer program is stored that can be loaded by a processor and that performs any of the above-described methods of thermal management of an energy storage system.
According to the technical scheme, due to the aggregation effect, under the same heat dissipation condition, the actual temperature value of the battery corresponding to the central position is the maximum value of the battery pack, and when the actual temperature information corresponding to the battery at the central position is within the standard temperature range, the actual temperature information corresponding to the batteries at other positions is also within the standard temperature range by comparing the actual temperature value of the central position with the standard temperature range; and when the actual temperature information corresponding to the battery at the central position is out of the standard temperature range, controlling the air conditioner to continue cooling until the central battery is in the standard temperature range. The possibility that the temperature of the central cell is within the standard temperature range when the temperature of the battery pack is measured is reduced, so that each cell in the battery pack is within the standard temperature range.
In summary, the present application includes at least one of the following beneficial technical effects:
1. under the same heat dissipation condition, the actual temperature value of the central battery is the maximum value of the battery pack, and by comparing the actual temperature value of the central position with the standard temperature range, when the actual temperature value corresponding to the battery at the central position is within the standard temperature range, the actual temperature values corresponding to the batteries at other positions are also within the standard temperature range; and when the actual temperature information corresponding to the battery at the central position is out of the standard temperature range, controlling the air conditioner to continue cooling until the actual temperature value corresponding to the central battery is in the standard temperature range. The possibility that the temperature of the central battery is within the standard temperature range when the temperature of the battery pack is measured is reduced, so that each battery in the battery pack is within the standard temperature range;
2. and when the actual temperature information corresponding to the central battery is smaller than the temperature information corresponding to the edge batteries, acquiring the actual temperature information corresponding to all the batteries, performing descending order arrangement on the position information corresponding to different batteries according to the actual temperature information, and respectively calculating the distance value between the position information corresponding to the batteries in the descending order arrangement and the position information corresponding to the central battery. Due to the aggregation effect, the distances between other batteries and the central battery are in direct proportion to the actual temperature value, so that the batteries with abnormal distances in descending temperature sequence can be quickly obtained, the working personnel can quickly and conveniently compare the batteries with the non-central batteries in the abnormal state, and alarm information related to the abnormal batteries is sent.
Drawings
Fig. 1 is a flowchart of a method for thermal management of an energy storage system according to an embodiment of the present disclosure.
Fig. 2 is a schematic view of the entire distribution of the battery pack in the embodiment of the present application.
Fig. 3 is an overall schematic diagram of the distance between the edge cell and the center cell and the temperature in the embodiment of the present application.
Fig. 4 is a block diagram of a thermal management apparatus of an energy storage system according to an embodiment of the present invention.
Fig. 5 is a block diagram of a thermal management apparatus of an energy storage system according to an embodiment of the present invention.
Reference numerals: 401. an actual temperature acquisition module; 402. an actual temperature comparison module; 403. an actual temperature reduction module; 404. a central battery temperature module; 405. a central temperature comparison module; 406. a central battery cooling module; 501. an actual temperature change calculation module; 502. and a central battery detection module.
Detailed Description
The present application is described in further detail below with reference to figures 1-5.
The embodiment of the application discloses a thermal management method of an energy storage system, which is applied to the energy storage thermal management system, wherein the energy storage thermal management system comprises a control center and temperature sensors arranged on each battery of a battery pack, the temperature sensors are controlled by the control center, the battery in the central area of the battery pack is set as a central battery due to the distribution of the battery pack, edge batteries are other batteries in the battery pack which are not the central battery, the control center can acquire actual temperature information corresponding to different batteries according to the instruction of a worker, and meanwhile, the control center can automatically collect the actual temperature information corresponding to different batteries on the battery pack according to a preset program; after the actual temperature information is received, the actual temperature information is compared with a preset standard temperature range, and the preset temperature adjusting equipment is controlled to adjust the temperature according to the comparison result.
As shown in fig. 1, the method comprises the steps of:
and S10, acquiring actual temperature information corresponding to each battery.
The actual temperature information comprises an actual temperature value corresponding to the battery and position information, the position information takes the central battery as a coordinate origin, takes the length direction of the battery pack as an X axis, takes the width direction of the battery pack as a Y axis, and takes the height direction of the battery pack as a Z axis.
And S11, judging whether the actual temperature value is larger than the standard temperature range.
The standard temperature range is preset by the system, and the preset standard temperature range can be modified by a worker through the control center but not larger than the preset limit standard temperature range. For example, the preset limit standard temperature range is-20 ℃ to 120 ℃, the worker can modify the preset standard temperature range to 0 ℃ to 80 ℃ through the control center, but when the worker modifies the minimum temperature to-50 ℃, the system can send a prompt message such as "lower than the minimum limit temperature" and set the minimum temperature to default-20 ℃.
And S12, if the temperature is higher than the preset temperature, controlling a preset air conditioner to perform cooling operation.
The method comprises the steps that after the air conditioner is cooled, the actual temperature value of a battery is obtained again after preset time, and whether the obtained actual temperature value is larger than a standard temperature range or not is judged; and if the temperature of the battery is still higher than the standard temperature, controlling the air conditioner to continue cooling until the actual temperature value of the battery is within the standard temperature range.
And S13, otherwise, acquiring actual temperature information corresponding to the central battery.
As shown in fig. 2, in consideration of the concentration effect, when the heat dissipation degree is constant, the temperature of the battery located in the central region should be the highest in the battery pack, and the central battery is the battery located in the central position of the battery pack. For example, the battery pack has a distribution of 4 × 4, and A, B, C, D four batteries are located closest to the center, where the actual temperature value corresponding to the battery a is 56 ℃, the actual temperature value corresponding to the battery B is 54 ℃, the actual temperature value corresponding to the battery C is 52 ℃, and the actual temperature value corresponding to the battery D is 55 ℃, and then the battery a is used as the center battery.
And S14, judging whether the actual temperature value of the central battery is larger than the standard temperature range.
And S15, if so, continuing the cooling operation.
And controlling the air conditioner to continue cooling, acquiring the actual temperature value of the central battery within the preset time, and comparing the actual temperature value with the standard temperature range again until the actual temperature value of the central battery is within the standard temperature range. When the actual temperature value corresponding to the central battery is within the standard temperature range, the actual temperature values corresponding to the remaining batteries of the battery pack are within the standard temperature range, so that all the batteries in the battery pack are ensured to be within the standard temperature range.
And S16, otherwise, sending a prompt message that the temperature of the central battery is normal.
Wherein, the prompt message of "the central battery temperature is normal" is sent to the intelligent terminal of the staff.
In one embodiment, considering that the actual temperature value of the central battery is already outside the standard temperature range in the temperature change process of the central battery, the service life of the central battery is shortened, and the actual temperature change rate needs to be detected; the method comprises the steps of obtaining an actual temperature change rate corresponding to a central battery within preset time, comparing the actual temperature change rate with a preset standard temperature change range, controlling an air conditioner to perform cooling operation if the actual temperature change rate is larger than the standard temperature change range, obtaining the actual temperature change rate corresponding to the central battery again after the preset time, and comparing the actual temperature change rate with the standard temperature change range again until the actual temperature change rate is within the standard temperature change range. When the actual temperature change rate of the central battery in the preset time is larger than the standard temperature change range, the air conditioner is directly controlled to perform cooling operation, the possibility that the central battery runs outside the standard temperature range is reduced, and the actual temperature information corresponding to each battery in the battery pack is located in the standard temperature range. For example, the preset standard temperature change range is 0-5 ℃/min, the change of the actual temperature within 2min is obtained to be 12 ℃, the corresponding temperature change rate is 6 ℃/min, after the air conditioner is started to perform cooling operation, the change of the actual temperature within 2min is obtained again to be 11 ℃ after 2min, the corresponding temperature change rate is 5.5 ℃/min and still higher than 5 ℃/min, the air conditioner is controlled to perform enhanced cooling operation, and after 2min, the change of the actual temperature within 2min is obtained again to be 6 ℃, the corresponding temperature change rate is 3 ℃/min.
In one embodiment, the corresponding actual temperature value is within a preset standard range when the actual temperature change rate of the central battery in a preset time is larger than the standard change range; acquiring actual temperature information of a central battery, calculating limit overload time according to the actual temperature information and the actual temperature change rate, wherein the limit overload time is the time corresponding to the maximum value of the actual temperature information in a standard temperature range under the increase of the actual temperature change rate, acquiring the duration time of which the actual temperature change rate is greater than the standard temperature range, judging whether the duration time is greater than the limit overload time, if so, controlling an air conditioner to perform cooling operation, otherwise, controlling the air conditioner not to act. When the actual temperature value corresponding to the central battery is within the standard temperature range, the relation between the actual temperature change rate and the preset standard temperature change rate range within the preset time does not need to be considered, and the possibility that the actual temperature change rate corresponding to the central battery is still larger than the standard temperature change range when the cooling operation corresponding to the air conditioner reaches the maximum value under the influence of heat of the peripheral batteries of the central battery is reduced. For example, the preset standard temperature change range is 0-80 ℃, the actual temperature value corresponding to the central battery is 65 ℃, the actual temperature change rate is 10 ℃/min, the preset standard change range is 6 ℃/min, the ultimate overload time is 1.5min through calculation, and the relation between the actual temperature change rate and the standard change range does not need to be considered within 1.5 min; and when the temperature reaches 1.5min, controlling the air conditioner to perform cooling operation until the actual temperature change rate is less than or equal to 6 ℃/min.
In one embodiment, the ambient temperature is considered to have an effect on the actual temperature value corresponding to the central battery; acquiring actual environment temperature information, wherein the actual environment temperature information comprises an actual environment temperature value, different environment temperature values and environment standard temperature ranges corresponding to the environment temperature values are stored in a preset environment standard temperature library, and the environment standard temperature range which is the same as the actual environment temperature value is inquired in the preset environment standard temperature library and is set as a standard temperature range. The matching degree of the standard temperature range and the actual environment temperature value is improved, the possibility that the actual temperature value corresponding to the central battery is still larger than the maximum value of the standard temperature range under the condition that the air conditioner is in the maximum cooling effect under the high-heat environment temperature or is still smaller than the minimum value of the standard temperature range under the condition that the air conditioner is in the maximum heating effect under the extremely cold environment is reduced. The correspondence between the actual ambient temperature and the standard temperature range is shown in table 1 below.
| Actual ambient temperature/. degree.C | Standard temperature range/. degree.C |
| -20-0 | -20-60 |
| 0-20 | 0-80 |
| 20-40 | 20-100 |
In one embodiment, considering that the actual output current of the battery pack has an influence on the actual temperature value corresponding to the central battery, the actual output current of the battery pack needs to be detected; acquiring the actual output current of the whole battery pack, wherein different output current values and current standard temperature ranges corresponding to the output current values are stored in a preset current temperature library; and inquiring a current standard temperature range corresponding to the actual current value according to the actual current value, comparing the current standard temperature range with an environment standard temperature range, extracting a superposed part, and replacing the superposed part with the standard temperature range. The matching degree of the standard temperature range and the actual output current is improved, and the possibility that the actual temperature value corresponding to the central battery is always larger than the maximum value of the preset standard temperature range when the output current is too high and the air conditioner refrigeration effect is maximum is reduced. The correspondence between the actual output current and the standard temperature range is shown in table 2 below.
| Actual output current/A | Standard temperature range/. degree.C |
| 0-5 | 0-70 |
| 5-10 | 20-90 |
| 10-15 | 30-120 |
For example, when the actual ambient temperature is 15 ℃ and the actual output current is 7A, the corresponding standard temperature ranges are 0-80 ℃ and 20-90 ℃, respectively, and the overlapping portion is 20-80 ℃ as the standard temperature range.
In one embodiment, considering that when the actual temperature information corresponding to the central battery is smaller than the actual temperature information corresponding to the edge battery, the actual resistance information corresponding to the central battery is detected, wherein the actual resistance information comprises an actual resistance value, the actual resistance value is compared with a preset standard resistance range, if the actual resistance value is within the standard resistance range, the position information corresponding to the edge battery is obtained, and the alarm information of the damage of the edge battery corresponding to the position information is sent; otherwise, sending alarm information corresponding to the damage of the central battery. For example, if the resistance value corresponding to the central battery is 5 Ω and the standard resistance range is 1-10 Ω, the position information of the edge battery with the actual temperature value corresponding to the edge battery being greater than the actual temperature value of the central battery is obtained, and the position information and the alarm information of the damage of the edge battery are packaged and sent to the intelligent terminal of the worker, so that the worker can quickly and conveniently detect or maintain the edge battery with abnormal temperature.
In one embodiment, as shown in fig. 3, it is considered that the damaged edge cell radiates heat to the edge cell closer to the center cell, resulting in the temperature of the edge cell closer to the center cell being in an abnormal state; the method comprises the steps of obtaining actual temperature information of all batteries, performing descending arrangement on all batteries according to actual temperature values, calculating distances between the batteries in the descending arrangement and a central battery respectively, storing different temperature differences between edge batteries and the actual batteries and distance ranges corresponding to the temperature differences in a preset temperature distance library, obtaining position information matched with the batteries when the calculated distance values are larger than the preset distance ranges at the same temperature, and sending alarm information corresponding to the batteries with abnormal distance values to an intelligent terminal of a worker. The correspondence between different temperature information and distance ranges is shown in table 3 below.
| Temperature information/. degree.C | Distance range/mm |
| 20-40 | 50-80 |
| 40-60 | 30-60 |
| 60-80 | 10-40 |
For example, the actual temperature value corresponding to the battery a as the center battery is 75 ℃, the actual temperature value corresponding to the battery B is 78 ℃, the actual temperature value corresponding to the battery C is 58 ℃, the actual temperature values are the battery a, the battery B and the battery C in descending order of the actual temperature values, the distance between the battery a and the center battery is 0, the distance between the battery B and the center battery is 52mm, the distance 2 between the battery C and the center battery is 45mm, after comparison, the position information (X1, Y1) of the battery B is obtained, and an alarm message such as "the battery B with the position information (X1, Y1) is damaged" is sent.
The implementation principle of the embodiment of the application is as follows: the method comprises the steps of firstly obtaining the ambient temperature and the output current of the battery pack, respectively obtaining the standard temperature ranges corresponding to the ambient temperature and the output current, obtaining the overlapped part between the standard temperature range corresponding to the ambient temperature and the standard temperature range corresponding to the output current, and replacing the overlapped part with the preset standard temperature range.
The method comprises the steps of obtaining actual temperature information of all batteries, obtaining actual temperature information corresponding to a central battery according to position information in the actual temperature information, comparing the actual temperature information of all batteries with a standard temperature range, and controlling an air conditioner to perform cooling operation until the actual temperature information corresponding to the central battery is located in the standard temperature range if the actual temperature information is larger than the standard temperature range.
If the actual temperature information is within the standard temperature range, detecting the actual temperature change rate corresponding to the central battery within a preset time, and comparing the actual temperature change rate with the standard change range; if the actual temperature change rate is within the standard change range, sending prompt information that the temperature of the central battery is normal to an intelligent terminal of a worker; otherwise, calculating the limit overload time on the basis of the actual temperature change rate, and recording the actual overload time; when the actual overload time reaches the limit overload time, controlling the air conditioner to carry out cooling operation until the actual temperature change rate is within the standard change range; otherwise, sending prompt information that the temperature of the central battery is normal to the intelligent terminal of the worker.
When the actual temperature value of the central battery is smaller than the actual temperature value of the edge battery, firstly detecting the corresponding resistance value of the central battery; if the resistance value corresponding to the central battery is out of the standard resistance range, sending alarm information of the damage of the central battery; otherwise, acquiring actual temperature values corresponding to all batteries, performing descending arrangement on the batteries according to the actual temperature values, respectively calculating the distance between each battery and the central battery in the descending arrangement, comparing the distance with the distance range corresponding to the temperature, and sending alarm information of the damage of the battery with abnormal distance.
Based on the method, the embodiment of the application also discloses a thermal management device of the energy storage system.
As shown in fig. 4, the thermal management apparatus of the energy storage system includes the following modules:
an actual temperature obtaining module 401, configured to obtain actual temperature information corresponding to each battery, where the actual temperature information includes an actual temperature value and position information corresponding to each battery;
an actual temperature comparison module 402, configured to compare an actual temperature value corresponding to each battery with a preset standard temperature range;
an actual temperature reduction module 403, configured to control a preset air conditioner to perform a cooling operation until the actual temperature value is within a preset standard temperature range if the actual temperature value is greater than the preset standard temperature range;
a central battery temperature module 404, configured to obtain actual temperature information corresponding to a central battery according to the position information, where the central battery is a battery located in a central position of the battery pack;
a central temperature comparison module 405, configured to compare actual temperature information corresponding to the central battery with a standard temperature range;
and the central battery cooling module 406 is configured to control the air conditioner to perform a cooling operation until the actual temperature information corresponding to the central battery is within the preset standard temperature range if the actual temperature information corresponding to the central battery is greater than the preset standard temperature range.
In an embodiment, the actual temperature comparing module 402 is further configured to compare the actual temperature value corresponding to each battery with a preset standard temperature range, including: acquiring actual environment temperature information, wherein the actual environment temperature information comprises an actual environment temperature value; inquiring an environment standard temperature range corresponding to the actual environment temperature value in a preset environment standard temperature library according to the actual environment temperature value, wherein the environment standard temperature library comprises the environment temperature value and the environment standard temperature range corresponding to the environment temperature value; replacing the environmental standard temperature range with a preset standard temperature range; and comparing the actual temperature value corresponding to each battery with a preset standard temperature range.
In an embodiment, the actual temperature comparing module 402 is further configured to replace the preset standard temperature range with the environmental standard temperature range, including: acquiring the actual output current of the whole battery pack; inquiring a current standard temperature range corresponding to the actual output current in a preset current temperature library according to the actual output current, wherein the current temperature library comprises the current standard temperature range corresponding to the output current; replacing the same part of the current standard temperature range and the environment standard temperature range with the environment standard temperature range; and replacing the preset standard temperature range with the environmental standard temperature range.
As shown in fig. 5, the thermal management apparatus of the energy storage system further includes the following modules:
the actual temperature change calculation module 501 is configured to obtain an actual temperature change rate corresponding to the central battery within a preset time; comparing the actual temperature change rate with a preset standard temperature change range; and if the actual temperature change rate is larger than the standard temperature change range, controlling the air conditioner to perform cooling operation until the actual temperature change rate is within the standard temperature change range.
In one embodiment, the real temperature change calculating module 501 is further configured to, if the actual temperature change rate is greater than the standard temperature change range, include: acquiring actual temperature information, and calculating the limit overload time according to the actual temperature information and the actual temperature change rate, wherein the limit overload time is the time when the actual temperature information reaches the maximum value in the standard temperature range under the increase of the actual temperature change rate; acquiring actual overload time corresponding to the actual temperature change rate greater than the standard temperature change range; judging whether the actual overload time reaches the limit overload time or not; and if so, controlling the air conditioner to perform cooling operation until the actual temperature change rate is within the standard temperature change range.
A central battery detection module 502, configured to, when actual temperature information corresponding to the central battery is smaller than actual temperature information corresponding to the edge battery, the edge battery is a battery located at an edge in the battery pack; detecting actual resistance information corresponding to the central battery, wherein the actual resistance information comprises an actual resistance value; comparing the actual resistance value with a preset standard resistance range; if the actual resistance value is within the standard resistance range, acquiring position information corresponding to the edge battery, and sending alarm information of edge battery damage corresponding to the position information; otherwise, sending alarm information corresponding to the central battery.
In one embodiment, the central battery detection module 502 is further configured to, after the actual temperature information corresponding to the central battery is smaller than the actual temperature information corresponding to the edge battery, further include: acquiring actual temperature information of all batteries; arranging the position information corresponding to the battery in a descending order according to the actual temperature value; respectively calculating the distance between the position information of the batteries in descending order and the position information corresponding to the central battery; comparing the distance between the position information and the central battery with the distance range of the corresponding temperature in a preset temperature distance library; if the calculated distance is out of the preset distance range, sending alarm information of the battery corresponding to the position information; otherwise, comparing the distance values corresponding to the next position information of the descending order arrangement until the position information of the descending order arrangement is completely compared.
The embodiment of the application also discloses computer equipment.
Specifically, the computer device comprises a memory and a processor, wherein the memory stores a computer program which can be loaded by the processor and executes the thermal management method of the energy storage system.
The embodiment of the application also discloses a computer readable storage medium.
Specifically, the computer-readable storage medium stores a computer program that can be loaded by a processor and executes the thermal management method of the energy storage system as described above, and includes, for example: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Claims (10)
1. A method of thermal management of an energy storage system, the method comprising:
acquiring actual temperature information corresponding to each battery, wherein the actual temperature information comprises an actual temperature value and position information corresponding to each battery;
comparing the actual temperature value corresponding to each battery with a preset standard temperature range;
if the actual temperature value is larger than the preset standard temperature range, controlling a preset air conditioner to perform cooling operation until the actual temperature value is within the preset standard temperature range;
acquiring actual temperature information corresponding to a central battery according to the position information, wherein the central battery is a battery positioned in the central position of the battery pack;
comparing the actual temperature information corresponding to the central battery with the standard temperature range;
and if the actual temperature information corresponding to the central battery is larger than the preset standard temperature range, controlling the air conditioner to perform cooling operation until the actual temperature information corresponding to the central battery is within the preset standard temperature range.
2. The method of claim 1, further comprising:
acquiring an actual temperature change rate corresponding to a central battery within a preset time;
comparing the actual temperature change rate with a preset standard temperature change rate range;
and if the actual temperature change rate is larger than the standard temperature change rate range, controlling the air conditioner to perform cooling operation until the actual temperature change rate of the central battery is within the standard temperature change range.
3. The method of claim 2, wherein the step of determining if the actual temperature change rate is greater than the standard temperature change range comprises:
acquiring actual temperature information of a central battery, and calculating limit overload time according to the actual temperature value and an actual temperature change rate, wherein the limit overload time is the time when the actual temperature value increases under the actual temperature change rate and reaches a time corresponding to a preset value in a standard temperature range, and the preset value in the standard temperature range is smaller than the maximum value in the standard temperature range;
acquiring actual overload time corresponding to the actual temperature change rate being greater than a standard temperature change range, wherein the actual overload time is the time for which the actual temperature change rate is greater than the preset standard temperature change rate range;
judging whether the actual overload time reaches the limit overload time or not;
and if so, controlling the air conditioner to perform cooling operation until the actual temperature change rate is within the standard temperature change range.
4. The method of claim 1, wherein comparing the actual temperature value corresponding to each battery with a preset standard temperature range comprises:
acquiring actual environment temperature information, wherein the actual environment temperature information comprises an actual environment temperature value;
inquiring an environment standard temperature range corresponding to an actual environment temperature value in a preset environment standard temperature library according to the actual environment temperature value, wherein the environment standard temperature library comprises different environment temperature values and each environment standard temperature range corresponding to the environment temperature value;
replacing the environmental standard temperature range with a preset standard temperature range;
and comparing the actual temperature value corresponding to each battery with a preset standard temperature range.
5. The method of claim 4, wherein replacing the ambient standard temperature range with the preset standard temperature range comprises:
acquiring the actual output current of the whole battery pack;
inquiring a current standard temperature range corresponding to the actual output current in a preset current temperature library according to the actual output current, wherein the current temperature library comprises the current standard temperature range corresponding to the output current;
replacing the same part of the current standard temperature range and the environment standard temperature range with the environment standard temperature range;
and replacing the preset standard temperature range with the environmental standard temperature range.
6. The method of claim 1, further comprising:
when the actual temperature information corresponding to the central battery is smaller than the actual temperature information corresponding to the edge battery, the edge battery is a battery positioned at the edge in the battery pack;
detecting actual resistance information corresponding to a central battery, wherein the actual resistance information comprises an actual resistance value;
comparing the actual resistance value with a preset standard resistance range;
if the actual resistance value is within the standard resistance range, acquiring position information corresponding to the edge battery, and sending alarm information of edge battery damage corresponding to the position information; otherwise, sending alarm information corresponding to the central battery.
7. The method according to claim 6, further comprising, after the time when the actual temperature information corresponding to the center battery is less than the actual temperature information corresponding to the edge battery:
acquiring actual temperature information of all batteries;
arranging the position information corresponding to the battery in a descending order according to the actual temperature value;
respectively calculating the distance between the position information of the batteries in descending order and the position information corresponding to the central battery;
comparing the distance between the position information and the central battery with the distance range of the corresponding temperature in a preset temperature distance library;
if the calculated distance is out of the preset distance range, sending alarm information of the battery corresponding to the position information; otherwise, comparing the distance values corresponding to the next position information of the descending order arrangement until the position information of the descending order arrangement is completely compared.
8. An energy storage system thermal management apparatus, the apparatus comprising:
the system comprises an actual temperature acquisition module (401) for acquiring actual temperature information corresponding to each battery, wherein the actual temperature information comprises an actual temperature value and position information corresponding to each battery;
the actual temperature comparison module (402) is used for comparing the actual temperature value corresponding to each battery with a preset standard temperature range;
the actual temperature reduction module (403) is used for controlling a preset air conditioner to perform cooling operation until the actual temperature value is within a preset standard temperature range if the actual temperature value is greater than the preset standard temperature range;
the central battery temperature module (404) is used for acquiring actual temperature information corresponding to a central battery according to the position information, wherein the central battery is a battery positioned in the central position of the battery pack;
a central temperature comparison module (405) for comparing the actual temperature information corresponding to the central battery with the standard temperature range;
and the central battery cooling module (406) is used for controlling the air conditioner to perform cooling operation until the actual temperature information corresponding to the central battery is within a preset standard temperature range if the actual temperature information corresponding to the central battery is greater than the preset standard temperature range.
9. A computer device comprising a memory and a processor, the memory having stored thereon a computer program that can be loaded by the processor and that executes the method according to any of claims 1 to 7.
10. A computer-readable storage medium, in which a computer program is stored which can be loaded by a processor and which executes the method of any one of claims 1 to 7.
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