CN119725804A - A battery management method for a DC high voltage constant power energy storage device - Google Patents
A battery management method for a DC high voltage constant power energy storage device Download PDFInfo
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Abstract
本发明提供了一种直流高压恒功率储能装置的电池管理方法，应用于直流高压户用储能箱中，包括以下步骤：S1.区域划定，将箱体内的区域空间划分为转换器采集区、高压箱采集区、电池组采集区、箱外区域，每一被划定的区域朝远离舱门的方向依次划定为表层区、深层区以及核心区；S2.采集获取每一被划定的区域内的工作信息并上传至总控模块；S3.总控模块根据所采集的工作信息分别发送相应的工作信号至管理系统、温控系统，同时总控模块将所采集的工作信息上传至云数据处理中心；S4.云数据处理中心对工作信息进行分析处理，并根据预设条件发送调整信号至总控模块，或根据预设条件发送报警信号至工作人员的信息接收设备终端。The present invention provides a battery management method for a DC high-voltage constant-power energy storage device, which is applied to a DC high-voltage household energy storage box, and includes the following steps: S1. area demarcation, dividing the regional space in the box into a converter collection area, a high-voltage box collection area, a battery pack collection area, and an area outside the box, and each demarcated area is sequentially demarcated into a surface area, a deep area, and a core area in the direction away from a cabin door; S2. collecting and acquiring working information in each demarcated area and uploading it to a master control module; S3. The master control module sends corresponding working signals to a management system and a temperature control system respectively according to the collected working information, and the master control module uploads the collected working information to a cloud data processing center; S4. The cloud data processing center analyzes and processes the working information, and sends an adjustment signal to the master control module according to preset conditions, or sends an alarm signal to an information receiving device terminal of the staff according to preset conditions.
Description
Technical Field
The invention relates to the technical field of energy storage boxes for high-voltage households, in particular to a battery management method of a direct-current high-voltage constant-power energy storage device.
Background
With the development of technology, AI algorithm is widely applied in various industries, and AI algorithm needs to be applied to a large amount of power, so as to meet the power demand, and a high-power electric storage box is usually required to be matched for power supply. Meanwhile, for construction electricity or electricity of high-rise buildings, the high-power electricity storage box is usually required to be applied to power supply in a matched mode.
The energy storage box matched with power supply is usually positioned in a power distribution room, and a separate air conditioner is installed in the power distribution room to cool the environment. However, the battery box inside the high-power electric storage box usually generates a large amount of heat during working, so that a complicated cooling and heat dissipation system is usually additionally arranged inside the electric storage box to ensure the service life of the battery box and reduce the potential safety hazard caused by overheat of the battery.
However, the existing cooling and heat dissipation system generally cools the whole inside of the box body, but does not control the temperature and regulate the working state of the battery box in the working state in a targeted manner, so that a method for managing the battery of the energy storage box is urgently needed, and the service efficiency of the temperature control system and the power supply of the battery box is improved.
Disclosure of Invention
In order to solve the problems, the invention provides a battery management method of a direct-current high-voltage constant-power energy storage device, which is realized by the following steps:
The battery management method of the direct-current high-voltage constant-power energy storage device is applied to a direct-current high-voltage household energy storage box, the direct-current high-voltage household energy storage box comprises a box body, a plurality of battery boxes are stored in a lower space in the box body, a direct-current-direct-current converter and a high-voltage box are stored in an upper space in the box body, the direct-current high-voltage household energy storage box further comprises a general control module, a temperature control system and a management system, a cabin door capable of being opened and closed is arranged on the box body, an industrial air conditioner is arranged on the cabin door, and a plurality of air channels corresponding to the battery boxes one by one are arranged at a cold air outlet position of the industrial air conditioner, and the battery management method comprises the following steps:
S1, dividing an area space in the box body into a converter acquisition area, a high-voltage box acquisition area, a battery pack acquisition area and an out-of-box area according to a direct current-direct current converter, a high-voltage box and projection areas of a plurality of battery boxes on a vertical surface, wherein each of the divided areas is sequentially divided into a surface area, a deep area and a core area in a direction away from the cabin door;
S2, acquiring working information in each delimited area and uploading the working information to a master control module, wherein the working information comprises electricity consumption information, temperature information and electric quantity information;
s3, the master control module respectively sends corresponding working signals to a management system and a temperature control system according to the collected working information, and the master control module uploads the collected working information to a cloud data processing center;
S4, the cloud data processing center analyzes and processes the working information, and sends an adjusting signal to the master control module according to preset conditions or sends an alarm signal to an information receiving equipment terminal of a worker according to preset conditions.
As a further improvement, the management system comprises a battery management system and an in-cabin energy management system, wherein the battery management system comprises a battery management system master control arranged in the high-voltage box, the battery management system master control is in communication connection with a battery management system slave control arranged in the battery box, and the in-cabin energy management system is in communication connection with each battery box, the direct current-direct current converter, the high-voltage box and the industrial air conditioner respectively;
the battery management system acquires electricity utilization information in real time, and the cabin energy management system acquires electric quantity information and temperature information in real time.
As a further improvement, the electricity consumption information includes:
the module electricity consumption information comprises the electricity consumption information of the master control module, the temperature control system and the management system, wherein the module electricity consumption information is constant electricity consumption information;
terminal electricity consumption information comprising industrial air conditioner electricity consumption information;
and the external electricity consumption information comprises full electricity consumption information and mains supply-electricity storage cooperation electricity consumption information.
As a further improvement, the power information includes:
the standby battery is arranged in the box body and is used for providing electricity for the master control module and the management system under the condition of power failure and no electricity storage of each battery box in the box body;
and the battery pack electric quantity information comprises the residual electric quantity condition of each battery box.
As a further improvement, defining the rated power storage capacity of each battery box as E 0, and defining the current power storage capacity of each battery box as E 1, there are:
when E 1≥90％E0 is carried out, defining that the battery box is in a full-power state at the moment;
when 20% E 0≤E1＜90％E0 is adopted, defining that the battery box is in a normal electric state;
When 5%E 0≤E1＜20％E0 is carried out, defining that the battery box is in a low-power state;
When E 1＜5％E0 is carried out, defining that the battery box is in an empty state;
and the master control module selects and distributes corresponding battery boxes to supply power according to the battery pack electric quantity information.
As a further improvement, a first temperature sensor is arranged on the outer wall surface of one side, close to the cabin door, of each battery box, a second temperature sensor is arranged on the inner wall surface of one side, close to the cabin door, of each battery box, a deep temperature sensor and a core temperature sensor are sequentially arranged inside the battery box in the direction away from the cabin door, an in-box temperature sensor is arranged on the inner wall of the cabin door, and at least one out-box temperature sensor is arranged on the outer wall of the box body.
As a further improvement, the battery boxes are numbered according to the row and the column, the direction of the battery pack is seen right after the cabin door is opened, the battery box at the leftmost side at the lowest end is numbered as a 1-1 battery box, the battery box adjacent to the right side of the 1-1 battery box is numbered as a 1-2 battery box, the battery box adjacent to the upper side of the 1-1 battery box is numbered as a 2-1 battery box, and the like is repeated until the battery box is numbered to the M-N battery box at the rightmost side at the uppermost end, wherein M and N are natural numbers not less than 2;
correspondingly, the air channels corresponding to the battery boxes are respectively numbered until the air channel is M '-N', and the air outlet of the air channel is provided with a valve blade which is controlled to be opened and closed by a motor.
As a further improvement, the step S3 includes the steps of:
s301, acquiring electricity information, judging whether the current external electricity information is a single battery box or not, and if so, entering a step S302, otherwise, entering a step S303;
S302, when a single battery box can meet the electricity taking amount of external electricity consumption, screening battery boxes in a full-electricity state in the current energy storage box, selecting any full-electricity state battery box to supply power until the battery box enters a low-electricity state, or detecting temperature information exceeding a preset temperature threshold value by any one of a core temperature sensor or a deep temperature sensor on the battery box, switching to supply power by other full-electricity state battery boxes, screening battery boxes in a normal-electricity state in the current energy storage box if no other full-electricity state battery boxes exist, selecting one of the battery boxes in the normal-electricity state to supply power in a switching mode, and entering step S303 if no other full-electricity state battery boxes exist;
If no battery box in a full-power state exists in the current energy storage box, screening the battery boxes in a normal-power state in the current energy storage box, selecting any battery box in the normal-power state to supply power until the battery box enters a low-power state, or detecting that temperature information exceeding a preset temperature threshold value appears by any one of a core temperature sensor or a deep temperature sensor on the battery box, and then switching to supply power by other battery boxes in the normal-power state, if no step S303 is entered;
s303, when a single battery box cannot meet the electricity taking amount of external electricity consumption, screening battery boxes in a full-electricity state or a normal-electricity state in a current energy storage box, selecting at least two battery boxes to discharge in parallel until any battery box enters a low-electricity state, or detecting temperature information exceeding a preset temperature threshold by any one of a core temperature sensor or a deep temperature sensor on the battery box, and switching the battery boxes in the full-electricity state or the normal-electricity state to be powered;
And when the step S302 is entered, sending an electricity lack signal to a cloud data processing center to inform a worker of replacing battery boxes, simultaneously selecting at least two battery boxes in a low-electricity state to conduct parallel discharge until any battery box enters an empty-electricity state or any one of a core temperature sensor and a deep temperature sensor on the battery box detects that temperature information exceeding a preset temperature threshold appears, and then switching the battery boxes which are not in the empty-electricity state to be added with power.
As a further improvement, before the battery box is switched to supply power in S302, after the battery box to be supplied with power is connected in parallel to the circuit, the circuit of the battery box to be shut down is disconnected to form constant voltage switching;
Defining the number of the battery box to be shut down as x-y, and the number of the other battery boxes to be optionally supplied with power, which meet the conditions, as k-i;
Wherein, k=1, 2..m., k=1 m. the number of the groups, x=1 m. the number of the groups, 2. M is a compound of formula (I);
defining the priority value as P according to the formula Calculating the priority of the battery box with the power supply, which meets the condition, wherein the priority is higher as the P value is larger, and if the P value is the same, the battery box with the largest i value is selected as the battery box to be powered;
When only two battery boxes are needed to perform combined power supply in the step S303, the battery box with the highest current electric quantity storage capacity is taken as a base point, the priority value of other battery boxes meeting the conditions is calculated, the battery box with the highest P value is selected to be matched with discharge, when any one of the two battery boxes does not meet the discharge requirement and needs to switch the other battery boxes, the two battery boxes are taken as the base point, the priority values of the other battery boxes meeting the conditions are judged and recorded as P 1 and P 2 respectively, and the battery box with the smallest P 1-P2 is selected as the battery box with the priority of power supply switching;
When more than two battery boxes are needed to be powered in combination in S303, the current electric quantity is taken as a base point by taking the battery box with the highest current electric quantity storage quantity as a base point, the priority value of the battery box with the highest P value as the battery box with the matched discharge is calculated and recorded as a second base point, then the priority value of the battery box with the highest P value as the battery box with the matched discharge is calculated by the base point and recorded as P 1 ', the priority value of the battery box with the highest P 1′-P2' is calculated by the second base point and recorded as P 2 ', the minimum P 1′-P2' is selected as the battery box with the matched discharge, if a plurality of battery boxes with the matched discharge are needed by the selection of the third base point, the battery box with the highest P 1 'or P 2' is selected from among the battery boxes with the matched discharge and recorded, and so on until the quantity of the battery boxes needed meets the requirement.
As a further improvement, a plurality of valve blades are arranged at the position of the air outlet of each air duct, the valve blades can be turned on and off, and the on and off states of the valve blades comprise a full-closed state, a half-open state and a full-open state;
when the M-N battery box is in a working state, the master control module sends a full-open signal to the M '-N' air duct, and valve blades of the M '-N' air duct are in a full-open state;
a first temperature threshold value and a second temperature threshold value are arranged in the first temperature sensor, when the temperature information detected by the first temperature sensor of the No. M-N battery box exceeds the first temperature threshold value, the master control module sends a half-open signal to valve leaves of other air channels adjacent to the No. M '-N' air channel, the valve leaves of the air channel receiving the half-open signal are switched from a fully closed state to a half-open state, and if at least two half-open signals are received by the same air channel at the same time or the half-open signals and the full-open signals are received by the same air channel at the same time, the valve leaves of the air channel are switched or kept in the full-open state;
When the temperature information detected by the first temperature sensor of the No. M-N battery box exceeds a second temperature threshold, comparing the temperature information T 1 collected by the deep temperature sensor with the temperature information T 2 collected by the core temperature sensor, defining the preset temperature threshold in the deep temperature sensor as T 1, and defining the preset temperature threshold in the core temperature sensor as T 2, when the temperature of T 1≥80％T1 or T 2≥70％T2 appears, stopping supplying power to the No. M-N battery box by other battery boxes meeting the conditions, and simultaneously switching the M '-N' air duct into a half-open state and keeping ventilation for at least 3-5 min.
The invention has the beneficial effects that:
1. The inside of the energy storage box is partitioned, the battery boxes in different areas are numbered, meanwhile, the temperature monitoring is carried out on the different areas, whether the overheat overload condition occurs in the inside of the energy storage box can be effectively and timely reflected, and the situation that the overheat overload condition occurs in the inside of the energy storage box can be timely fed back to the staff and the maintenance is more accurately realized.
2. According to the acquired temperature information, electric quantity information and electricity consumption information, the corresponding battery boxes in the energy storage box can be accurately selected for energy supply, so that energy waste is reduced, meanwhile, the energy reserves of the battery boxes are reasonably distributed, and the service life of the battery boxes is prolonged.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions in the embodiments of the present invention will be clearly and completely described in the following in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention. Thus, the following detailed description of the embodiments of the invention is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.
In the description of the present invention, the terms "first," "second," and the like 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 defining "a first" or "a second" may explicitly or implicitly include one or more such feature.
The invention provides a battery management method of a direct-current high-voltage constant-power energy storage device, which is realized by the following steps:
The battery management method of the direct-current high-voltage constant-power energy storage device is applied to a direct-current high-voltage household energy storage box, the direct-current high-voltage household energy storage box comprises a box body, a plurality of battery boxes are stored in a lower space in the box body, a direct-current-direct-current converter and a high-voltage box are stored in an upper space in the box body, the direct-current high-voltage household energy storage box further comprises a general control module, a temperature control system and a management system, a cabin door capable of being opened and closed is arranged on the box body, an industrial air conditioner is arranged on the cabin door, and a plurality of air channels corresponding to the battery boxes one by one are arranged at a cold air outlet position of the industrial air conditioner, and the battery management method comprises the following steps:
S1, dividing an area space in the box body into a converter acquisition area, a high-voltage box acquisition area, a battery pack acquisition area and an out-of-box area according to a direct current-direct current converter, a high-voltage box and projection areas of a plurality of battery boxes on a vertical surface, wherein each of the divided areas is sequentially divided into a surface area, a deep area and a core area in a direction away from the cabin door;
S2, acquiring working information in each delimited area and uploading the working information to a master control module, wherein the working information comprises electricity consumption information, temperature information and electric quantity information;
s3, the master control module respectively sends corresponding working signals to a management system and a temperature control system according to the collected working information, and the master control module uploads the collected working information to a cloud data processing center;
S4, the cloud data processing center analyzes and processes the working information, and sends an adjusting signal to the master control module according to preset conditions or sends an alarm signal to an information receiving equipment terminal of a worker according to preset conditions.
As a further improvement, the management system comprises a battery management system and an in-cabin energy management system, wherein the battery management system comprises a battery management system master control arranged in the high-voltage box, the battery management system master control is in communication connection with a battery management system slave control arranged in the battery box, and the in-cabin energy management system is in communication connection with each battery box, the direct current-direct current converter, the high-voltage box and the industrial air conditioner respectively;
the battery management system acquires electricity utilization information in real time, and the cabin energy management system acquires electric quantity information and temperature information in real time.
As a further improvement, the electricity consumption information includes:
the module electricity consumption information comprises the electricity consumption information of the master control module, the temperature control system and the management system, wherein the module electricity consumption information is constant electricity consumption information;
terminal electricity consumption information comprising industrial air conditioner electricity consumption information;
and the external electricity consumption information comprises full electricity consumption information and mains supply-electricity storage cooperation electricity consumption information.
As a further improvement, the power information includes:
the standby battery is arranged in the box body and is used for providing electricity for the master control module and the management system under the condition of power failure and no electricity storage of each battery box in the box body;
and the battery pack electric quantity information comprises the residual electric quantity condition of each battery box.
As a further improvement, defining the rated power storage capacity of each battery box as E 0, and defining the current power storage capacity of each battery box as E 1, there are:
when E 1≥90％E0 is carried out, defining that the battery box is in a full-power state at the moment;
when 20% E 0≤E1＜90％E0 is adopted, defining that the battery box is in a normal electric state;
When 5%E 0≤E1＜20％E0 is carried out, defining that the battery box is in a low-power state;
When E 1＜5％E0 is carried out, defining that the battery box is in an empty state;
and the master control module selects and distributes corresponding battery boxes to supply power according to the battery pack electric quantity information.
As a further improvement, a first temperature sensor is arranged on the outer wall surface of one side, close to the cabin door, of each battery box, a second temperature sensor is arranged on the inner wall surface of one side, close to the cabin door, of each battery box, a deep temperature sensor and a core temperature sensor are sequentially arranged inside the battery box in the direction away from the cabin door, an in-box temperature sensor is arranged on the inner wall of the cabin door, and at least one out-box temperature sensor is arranged on the outer wall of the box body.
As a further improvement, the battery boxes are numbered according to the row and the column, the direction of the battery pack is seen right after the cabin door is opened, the battery box at the leftmost side at the lowest end is numbered as a 1-1 battery box, the battery box adjacent to the right side of the 1-1 battery box is numbered as a 1-2 battery box, the battery box adjacent to the upper side of the 1-1 battery box is numbered as a 2-1 battery box, and the like is repeated until the battery box is numbered to the M-N battery box at the rightmost side at the uppermost end, wherein M and N are natural numbers not less than 2;
correspondingly, the air channels corresponding to the battery boxes are respectively numbered until the air channel is M '-N', and the air outlet of the air channel is provided with a valve blade which is controlled to be opened and closed by a motor.
As a further improvement, the step S3 includes the steps of:
s301, acquiring electricity information, judging whether the current external electricity information is a single battery box or not, and if so, entering a step S302, otherwise, entering a step S303;
S302, when a single battery box can meet the electricity taking amount of external electricity consumption, screening battery boxes in a full-electricity state in the current energy storage box, selecting any full-electricity state battery box to supply power until the battery box enters a low-electricity state, or detecting temperature information exceeding a preset temperature threshold value by any one of a core temperature sensor or a deep temperature sensor on the battery box, switching to supply power by other full-electricity state battery boxes, screening battery boxes in a normal-electricity state in the current energy storage box if no other full-electricity state battery boxes exist, selecting one of the battery boxes in the normal-electricity state to supply power in a switching mode, and entering step S303 if no other full-electricity state battery boxes exist;
If no battery box in a full-power state exists in the current energy storage box, screening the battery boxes in a normal-power state in the current energy storage box, selecting any battery box in the normal-power state to supply power until the battery box enters a low-power state, or detecting that temperature information exceeding a preset temperature threshold value appears by any one of a core temperature sensor or a deep temperature sensor on the battery box, and then switching to supply power by other battery boxes in the normal-power state, if no step S303 is entered;
s303, when a single battery box cannot meet the electricity taking amount of external electricity consumption, screening battery boxes in a full-electricity state or a normal-electricity state in a current energy storage box, selecting at least two battery boxes to discharge in parallel until any battery box enters a low-electricity state, or detecting temperature information exceeding a preset temperature threshold by any one of a core temperature sensor or a deep temperature sensor on the battery box, and switching the battery boxes in the full-electricity state or the normal-electricity state to be powered;
And when the step S302 is entered, sending an electricity lack signal to a cloud data processing center to inform a worker of replacing battery boxes, simultaneously selecting at least two battery boxes in a low-electricity state to conduct parallel discharge until any battery box enters an empty-electricity state or any one of a core temperature sensor and a deep temperature sensor on the battery box detects that temperature information exceeding a preset temperature threshold appears, and then switching the battery boxes which are not in the empty-electricity state to be added with power.
As a further improvement, before the battery box is switched to supply power in S302, after the battery box to be supplied with power is connected in parallel to the circuit, the circuit of the battery box to be shut down is disconnected to form constant voltage switching;
Defining the number of the battery box to be shut down as x-y, and the number of the other battery boxes to be optionally supplied with power, which meet the conditions, as k-i;
Wherein, k=1, 2..m., k=1 m. the number of the groups, x=1 m. the number of the groups, 2. M is a compound of formula (I);
defining the priority value as P according to the formula Calculating the priority of the battery box with the power supply, which meets the condition, wherein the priority is higher as the P value is larger, and if the P value is the same, the battery box with the largest i value is selected as the battery box to be powered;
When only two battery boxes are needed to perform combined power supply in the step S303, the battery box with the highest current electric quantity storage capacity is taken as a base point, the priority value of other battery boxes meeting the conditions is calculated, the battery box with the highest P value is selected to be matched with discharge, when any one of the two battery boxes does not meet the discharge requirement and needs to switch the other battery boxes, the two battery boxes are taken as the base point, the priority values of the other battery boxes meeting the conditions are judged and recorded as P 1 and P 2 respectively, and the battery box with the smallest P 1-P2 is selected as the battery box with the priority of power supply switching;
When more than two battery boxes are needed to be powered in combination in S303, the current electric quantity is taken as a base point by taking the battery box with the highest current electric quantity storage quantity as a base point, the priority value of the battery box with the highest P value as the battery box with the matched discharge is calculated and recorded as a second base point, then the priority value of the battery box with the highest P value as the battery box with the matched discharge is calculated by the base point and recorded as P 1 ', the priority value of the battery box with the highest P 1′-P2' is calculated by the second base point and recorded as P 2 ', the minimum P 1′-P2' is selected as the battery box with the matched discharge, if a plurality of battery boxes with the matched discharge are needed by the selection of the third base point, the battery box with the highest P 1 'or P 2' is selected from among the battery boxes with the matched discharge and recorded, and so on until the quantity of the battery boxes needed meets the requirement.
As a further improvement, a plurality of valve blades are arranged at the position of the air outlet of each air duct, the valve blades can be turned on and off, and the on and off states of the valve blades comprise a full-closed state, a half-open state and a full-open state;
when the M-N battery box is in a working state, the master control module sends a full-open signal to the M '-N' air duct, and valve blades of the M '-N' air duct are in a full-open state;
a first temperature threshold value and a second temperature threshold value are arranged in the first temperature sensor, when the temperature information detected by the first temperature sensor of the No. M-N battery box exceeds the first temperature threshold value, the master control module sends a half-open signal to valve leaves of other air channels adjacent to the No. M '-N' air channel, the valve leaves of the air channel receiving the half-open signal are switched from a fully closed state to a half-open state, and if at least two half-open signals are received by the same air channel at the same time or the half-open signals and the full-open signals are received by the same air channel at the same time, the valve leaves of the air channel are switched or kept in the full-open state;
When the temperature information detected by the first temperature sensor of the No. M-N battery box exceeds a second temperature threshold, comparing the temperature information T 1 collected by the deep temperature sensor with the temperature information T 2 collected by the core temperature sensor, defining the preset temperature threshold in the deep temperature sensor as T 1, and defining the preset temperature threshold in the core temperature sensor as T 2, when the temperature of T 1≥80％T1 or T 2≥70％T2 appears, stopping supplying power to the No. M-N battery box by other battery boxes meeting the conditions, and simultaneously switching the M '-N' air duct into a half-open state and keeping ventilation for at least 3-5 min.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, and various modifications and variations may be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The battery management method of the direct-current high-voltage constant-power energy storage device is applied to a direct-current high-voltage household energy storage box, the direct-current high-voltage household energy storage box comprises a box body, a plurality of battery boxes are stored in a lower space in the box body, a direct-current-direct-current converter and a high-voltage box are stored in an upper space in the box body, the direct-current high-voltage household energy storage box further comprises a general control module, a temperature control system and a management system, a cabin door capable of being opened and closed is arranged on the box body, an industrial air conditioner is arranged on the cabin door, and a plurality of air channels corresponding to the battery boxes one by one are arranged at a cold air outlet position of the industrial air conditioner, and the battery management method is characterized by comprising the following steps:
S1, dividing an area space in the box body into a converter acquisition area, a high-voltage box acquisition area, a battery pack acquisition area and an out-of-box area according to a direct current-direct current converter, a high-voltage box and projection areas of a plurality of battery boxes on a vertical surface, wherein each of the divided areas is sequentially divided into a surface area, a deep area and a core area in a direction away from the cabin door;
S2, acquiring working information in each delimited area and uploading the working information to a master control module, wherein the working information comprises electricity consumption information, temperature information and electric quantity information;
s3, the master control module respectively sends corresponding working signals to a management system and a temperature control system according to the collected working information, and the master control module uploads the collected working information to a cloud data processing center;
S4, the cloud data processing center analyzes and processes the working information, and sends an adjusting signal to the master control module according to preset conditions or sends an alarm signal to an information receiving equipment terminal of a worker according to preset conditions.
2.A battery management method for a DC high voltage constant power energy storage device as defined in claim 1,
The management system comprises a battery management system and an in-cabin energy management system, wherein the battery management system comprises a battery management system main control arranged in the high-voltage box, the battery management system main control is in communication connection with a battery management system slave control arranged in the battery box, and the in-cabin energy management system is in communication connection with each battery box, a direct current-direct current converter, the high-voltage box and an industrial air conditioner respectively;
the battery management system acquires electricity utilization information in real time, and the cabin energy management system acquires electric quantity information and temperature information in real time.
3. The method for battery management of a dc high voltage constant power storage device according to claim 2, wherein said power consumption comprises:
the module electricity consumption information comprises the electricity consumption information of the master control module, the temperature control system and the management system, wherein the module electricity consumption information is constant electricity consumption information;
terminal electricity consumption information comprising industrial air conditioner electricity consumption information;
and the external electricity consumption information comprises full electricity consumption information and mains supply-electricity storage cooperation electricity consumption information.
4. The method for battery management of a dc high voltage constant power energy storage device according to claim 2, wherein the power information includes:
the standby battery is arranged in the box body and is used for providing electricity for the master control module and the management system under the condition of power failure and no electricity storage of each battery box in the box body;
and the battery pack electric quantity information comprises the residual electric quantity condition of each battery box.
5. The method for battery management of a dc high voltage constant power energy storage device according to claim 4, wherein defining a rated power storage capacity of each battery box as E 0, and defining a current power storage capacity of each battery box as E 1 includes:
when E 1≥90％E0 is carried out, defining that the battery box is in a full-power state at the moment;
when 20% E 0≤E1＜90％E0 is adopted, defining that the battery box is in a normal electric state;
When 5%E 0≤E1＜20％E0 is carried out, defining that the battery box is in a low-power state;
When E 1＜5％E0 is carried out, defining that the battery box is in an empty state;
and the master control module selects and distributes corresponding battery boxes to supply power according to the battery pack electric quantity information.
6. The battery management method of the direct-current high-voltage constant-power energy storage device according to claim 5, wherein a first temperature sensor is arranged on the outer wall surface of one side, close to the cabin door, of each battery box, a second temperature sensor is arranged on the inner wall surface of one side, close to the cabin door, of each battery box, a deep temperature sensor and a core temperature sensor are sequentially arranged inside the battery box in a direction away from the cabin door, an in-box temperature sensor is arranged on the inner wall of the cabin door, and at least one out-of-box temperature sensor is arranged on the outer wall of the box body.
7. The battery management method of the direct-current high-voltage constant-power energy storage device according to claim 6, wherein the battery boxes are numbered according to the row and the column, the leftmost battery box at the lowest end is numbered as a 1-1 battery box based on the direction of a front view battery pack after a cabin door is opened, the adjacent battery boxes at the right side of the 1-1 battery box are numbered as a 1-2 battery box, the adjacent battery boxes above the 1-1 battery box are numbered as a 2-1 battery box, and the like is repeated until the battery boxes are numbered as an M-N battery box at the uppermost right side, wherein M and N are natural numbers not less than 2;
correspondingly, the air channels corresponding to the battery boxes are respectively numbered until the air channel is M '-N', and the air outlet of the air channel is provided with a valve blade which is controlled to be opened and closed by a motor.
8. The method for battery management of a dc high voltage constant power energy storage device according to claim 7, wherein S3 comprises the steps of:
s301, acquiring electricity information, judging whether the current external electricity information is a single battery box or not, and if so, entering a step S302, otherwise, entering a step S303;
S302, when a single battery box can meet the electricity taking amount of external electricity consumption, screening battery boxes in a full-electricity state in the current energy storage box, selecting any full-electricity state battery box to supply power until the battery box enters a low-electricity state, or detecting temperature information exceeding a preset temperature threshold value by any one of a core temperature sensor or a deep temperature sensor on the battery box, switching to supply power by other full-electricity state battery boxes, screening battery boxes in a normal-electricity state in the current energy storage box if no other full-electricity state battery boxes exist, selecting one of the battery boxes in the normal-electricity state to supply power in a switching mode, and entering step S303 if no other full-electricity state battery boxes exist;
If no battery box in a full-power state exists in the current energy storage box, screening the battery boxes in a normal-power state in the current energy storage box, selecting any battery box in the normal-power state to supply power until the battery box enters a low-power state, or detecting that temperature information exceeding a preset temperature threshold value appears by any one of a core temperature sensor or a deep temperature sensor on the battery box, and then switching to supply power by other battery boxes in the normal-power state, if no step S303 is entered;
s303, when a single battery box cannot meet the electricity taking amount of external electricity consumption, screening battery boxes in a full-electricity state or a normal-electricity state in a current energy storage box, selecting at least two battery boxes to discharge in parallel until any battery box enters a low-electricity state, or detecting temperature information exceeding a preset temperature threshold by any one of a core temperature sensor or a deep temperature sensor on the battery box, and switching the battery boxes in the full-electricity state or the normal-electricity state to be powered;
And when the step S302 is entered, sending an electricity lack signal to a cloud data processing center to inform a worker of replacing battery boxes, simultaneously selecting at least two battery boxes in a low-electricity state to conduct parallel discharge until any battery box enters an empty-electricity state or any one of a core temperature sensor and a deep temperature sensor on the battery box detects that temperature information exceeding a preset temperature threshold appears, and then switching the battery boxes which are not in the empty-electricity state to be added with power.
9. The method for managing a battery of a dc high voltage constant power energy storage device according to claim 8, wherein before the battery box is switched in S302 to supply power, the battery box to be supplied with power is connected in parallel to a circuit, and then the circuit of the battery box to be shut down is disconnected to form constant voltage switching;
Defining the number of the battery box to be shut down as x-y, and the number of the other battery boxes to be optionally supplied with power, which meet the conditions, as k-i;
Wherein, k=1, 2..m., k=1 m. the number of the groups, x=1 m. the number of the groups, 2. M is a compound of formula (I);
defining the priority value as P according to the formula Calculating the priority of the battery box with the power supply, which meets the condition, wherein the priority is higher as the P value is larger, and if the P value is the same, the battery box with the largest i value is selected as the battery box to be powered;
When only two battery boxes are needed to perform combined power supply in the step S303, the battery box with the highest current electric quantity storage capacity is taken as a base point, the priority value of other battery boxes meeting the conditions is calculated, the battery box with the highest P value is selected to be matched with discharge, when any one of the two battery boxes does not meet the discharge requirement and needs to switch the other battery boxes, the two battery boxes are taken as the base point, the priority values of the other battery boxes meeting the conditions are judged and recorded as P 1 and P 2 respectively, and the battery box with the smallest P 1-P2 is selected as the battery box with the priority of power supply switching;
When more than two battery boxes are needed to be powered in combination in S303, the current electric quantity is taken as a base point by taking the battery box with the highest current electric quantity storage quantity as a base point, the priority value of the battery box with the highest P value as the battery box with the matched discharge is calculated and recorded as a second base point, then the priority value of the battery box with the highest P value as the battery box with the matched discharge is calculated by the base point and recorded as P 1 ', the priority value of the battery box with the highest P 1′-P2' is calculated by the second base point and recorded as P 2 ', the minimum P 1′-P2' is selected as the battery box with the matched discharge, if a plurality of battery boxes with the matched discharge are needed by the selection of the third base point, the battery box with the highest P 1 'or P 2' is selected from among the battery boxes with the matched discharge and recorded, and so on until the quantity of the battery boxes needed meets the requirement.
10. The battery management method of the direct-current high-voltage constant-power energy storage device according to claim 8, wherein a plurality of valve blades are arranged at the air outlet position of each air duct, the valve blades can be turned on and off, and the on and off states of the valve blades comprise a fully-closed state, a half-open state and a fully-open state;
when the M-N battery box is in a working state, the master control module sends a full-open signal to the M '-N' air duct, and valve blades of the M '-N' air duct are in a full-open state;
a first temperature threshold value and a second temperature threshold value are arranged in the first temperature sensor, when the temperature information detected by the first temperature sensor of the No. M-N battery box exceeds the first temperature threshold value, the master control module sends a half-open signal to valve leaves of other air channels adjacent to the No. M '-N' air channel, the valve leaves of the air channel receiving the half-open signal are switched from a fully closed state to a half-open state, and if at least two half-open signals are received by the same air channel at the same time or the half-open signals and the full-open signals are received by the same air channel at the same time, the valve leaves of the air channel are switched or kept in the full-open state;
When the temperature information detected by the first temperature sensor of the No. M-N battery box exceeds a second temperature threshold, comparing the temperature information T 1 collected by the deep temperature sensor with the temperature information T 2 collected by the core temperature sensor, defining the preset temperature threshold in the deep temperature sensor as T 1, and defining the preset temperature threshold in the core temperature sensor as T 2, when the temperature of T 1≥80％T1 or T 2≥70％T2 appears, stopping supplying power to the No. M-N battery box by other battery boxes meeting the conditions, and simultaneously switching the M '-N' air duct into a half-open state and keeping ventilation for at least 3-5 min.
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