Battery pack abnormity-based processing system and control method thereof

Abstract

The invention relates to the technical field of energy storage battery packs, and discloses a battery pack abnormity-based processing system and a control method thereof. The system comprises a battery storage cabinet body, a control unit, a detection unit and an exception handling unit, wherein the control unit is respectively connected with the detection unit and the exception handling unit; the battery storage cabinet body comprises a plurality of battery storage bins, each battery storage bin stores an energy storage battery pack, each energy storage battery pack is electrically connected with the control unit, and the bottom surface of each battery storage bin is not perpendicular to the side surface of the battery storage cabinet body; the detection unit and the abnormity processing unit are arranged in each battery storage bin; each battery storage bin is provided with a door body capable of being opened and closed, and each door body capable of being opened and closed is connected with the control unit. The battery cell of the energy storage battery pack can be prevented from being damaged more seriously, and meanwhile, the safety risk of more serious fire even explosion can be avoided.

Description

Technical Field

[0001] The present application relates to the technical field of energy storage battery packs, and in particular to a processing system based on battery pack abnormalities and a control method thereof. Background Art

[0002] When the battery cells leave the factory, the performance parameters can only be basically consistent, but not completely consistent. As the number of charge and discharge times increases, the difference in performance parameters will gradually increase, which may lead to dangerous situations such as unbalanced temperature control. Although existing technologies use cooling methods such as air conditioning to control the temperature of the battery cells, when the performance parameters of the battery cells vary too much, it is easy for individual battery cells to become overheated or catch fire during the charge and discharge process.

[0003] However, due to the high energy density of battery cells made of specific materials, such as lithium battery cells, and the fact that they are not easy to extinguish after catching fire, once a battery cell catches fire, the existing cooling methods cannot solve the safety problems of high temperature or even fire in the battery pack. In some closed storage cabinets, due to the inability to properly release pressure, there may even be a risk of explosion under extreme conditions. Summary of the invention

[0004] The present application provides a processing system based on battery pack abnormalities and a control method thereof to solve one or more technical problems existing in the prior art and at least provide a beneficial option or create conditions.

[0005] Other features and advantages of the present application will become apparent from the following detailed description, or may be learned in part by the practice of the present application.

[0006] According to one aspect of an embodiment of the present application, a battery pack abnormality processing system is provided, comprising a battery storage cabinet, a control unit, a detection unit and an abnormality processing unit, wherein the control unit is connected to the detection unit and the abnormality processing unit respectively; the battery storage cabinet comprises a plurality of battery storage bins, each of which stores an energy storage battery pack, each of which is electrically connected to the control unit, and the bottom surface of the battery storage bin is not perpendicular to the side surface of the battery storage cabinet; the detection unit and the abnormality processing unit are arranged in each of the battery storage bins; each of the battery storage bins is provided with an openable and closable door, and each of the openable and closable door is connected to the control unit; When the detection unit detects that any of the battery storage compartments is in a first preset abnormal state, the control unit controls the energy storage battery pack in the battery storage compartment in the first preset abnormal state to be powered off, and controls the abnormality processing unit to perform a first warning process; When the detection unit detects that any one of the battery storage bins is in the second preset abnormal state, the control unit controls the openable and closable door of the battery storage bin in the second preset abnormal state to open, and controls the abnormality processing unit to perform a second early warning process to eject the energy storage battery pack in the battery storage bin in the second preset abnormal state out of the battery storage bin.

[0007] In one embodiment of the present application, based on the aforementioned scheme, the detection unit includes multiple temperature sensors and multiple smoke sensors, and the multiple temperature sensors and the multiple smoke sensors are respectively arranged in each of the battery storage compartments; the temperature sensors and the smoke sensors are respectively used to detect the temperature value and the smoke concentration value in the battery storage compartment; the first preset abnormal state is used to characterize that the temperature value in the battery storage compartment is higher than a first preset temperature threshold and / or the smoke concentration value in the battery storage compartment is higher than a first preset concentration value.

[0008] In one embodiment of the present application, based on the aforementioned scheme, the exception handling unit includes a plurality of elastic members and a plurality of gas-liquid output devices; the plurality of gas-liquid output devices are respectively arranged in each of the battery storage bins, and each of the gas-liquid output devices is electrically connected to the control unit, and the plurality of elastic members are respectively arranged in each of the battery storage bins, and the elastic members are used to provide thrust to the energy storage battery pack when the openable and closable door is opened, so that the energy storage battery pack is ejected out of the battery storage bin.

[0009] In one embodiment of the present application, based on the aforementioned scheme, the abnormality handling unit further includes a plurality of support beam devices, a plurality of locking mechanisms and a plurality of pulley devices, and each of the battery storage bins is provided with the support beam device, the locking mechanism and the pulley device; the support beam device is provided on the bottom surface of the battery storage bin, the locking mechanism can be lifted and lowered on the support beam device, the locking mechanism can be lifted and lowered in the support beam device, and the locking mechanism is used to lock the energy storage battery pack when the battery storage bin is in a normal state, and to release the energy storage battery pack when the battery storage bin is in the second preset abnormal state; the pulley device is embedded in the support beam device, and the pulley device abuts against the lower surface of the energy storage battery pack.

[0010] In one embodiment of the present application, based on the above-mentioned scheme, the second preset abnormal state is used to characterize that the temperature value in the battery storage bin is higher than the second preset temperature threshold and the smoke concentration value in the battery storage bin is higher than the second preset concentration value; when the battery storage bin is in the second preset abnormal state, the control unit controls the locking mechanism to descend and controls the openable and closable door to open to release the energy storage battery pack, and controls the elastic member to release so that the elastic member provides thrust so that the energy storage battery pack is ejected out of the battery storage bin; wherein the second preset temperature threshold is greater than the first preset temperature threshold, and the second preset concentration value is greater than the first preset concentration value.

[0011] In one embodiment of the present application, based on the aforementioned scheme, the exception handling unit also includes an alarm, which is arranged on the outer top of the battery storage cabinet and is electrically connected to the control unit; wherein, when the battery storage compartment is in the first preset abnormal state or the second preset abnormal state, the control unit controls the alarm to sound an alarm.

[0012] In one embodiment of the present application, based on the aforementioned scheme, the first early warning processing is that the control unit controls the gas-liquid output device in the battery storage bin in the first preset abnormal state to output aerosol and / or perfluoroacetone fire extinguishing agent, and controls the alarm to sound an alarm; the second early warning processing is that the control unit controls the release of the elastic member in the battery storage bin in the second preset abnormal state and controls the alarm to sound an alarm, and controls the locking mechanism to descend to release the energy storage battery pack, so that the energy storage battery pack is ejected out of the battery storage bin under the thrust provided by the elastic member.

[0013] According to one aspect of an embodiment of the present application, a control method of a battery pack abnormality processing system is provided, which is applied to the battery pack abnormality processing system described in the above embodiment. The method is executed in the control unit described in the above embodiment, and the method includes: Acquire temperature data and smoke concentration data collected by the detection unit; Determine whether any battery storage compartment in the battery storage cabinet is in a first preset abnormal state or a second preset abnormal state based on the temperature data and the smoke concentration data; If the target battery storage compartment is in the first preset abnormal state, the energy storage battery pack in the target battery storage compartment is controlled to be powered off, and the abnormality processing unit is controlled to perform a first warning process; If the target battery storage bin is in the second preset abnormal state, the openable and closable door of the target battery storage bin is controlled to open, and the abnormality processing unit is controlled to perform a second early warning process to eject the energy storage battery pack in the target battery storage bin out of the battery storage bin.

[0014] In one embodiment of the present application, based on the above solution, judging whether any battery storage compartment in the battery storage cabinet is in the first preset abnormal state or the second preset abnormal state based on the temperature data and the smoke concentration data includes: Acquire the temperature value of each battery storage compartment in the battery storage cabinet based on the temperature data, and acquire the smoke concentration value of each battery storage compartment based on the smoke concentration data; If any of the temperature values ​​is greater than the first preset temperature threshold and / or any of the smoke concentration values ​​is greater than the first preset concentration threshold, it is determined that the target battery storage compartment whose temperature value is greater than the first preset temperature threshold is in the first preset abnormal state and / or the target battery storage compartment whose smoke concentration value is greater than the first preset concentration threshold is in the first preset abnormal state; If the temperature value of the target battery storage compartment is greater than a second preset temperature threshold and the smoke concentration value is greater than a second preset concentration threshold, it is determined that the target battery storage compartment is in the second preset abnormal state; The second preset temperature threshold is greater than the first preset temperature threshold, and the second preset concentration value is greater than the first preset concentration value.

[0015] In one embodiment of the present application, based on the aforementioned scheme, the first early warning processing is to control the gas-liquid output device in the target battery storage bin in the first preset abnormal state to output aerosol and / or perfluoroacetone fire extinguishing agent, and perform an alarm operation; the second early warning processing is to control the elastic member in the target battery storage bin in the second preset abnormal state to release and perform an alarm operation, and control the locking mechanism to descend to release the energy storage battery pack, so that the energy storage battery pack is ejected out of the battery storage bin under the thrust provided by the elastic member.

[0016] The beneficial effects of the present application are as follows: the bottom surface of the battery storage bin and the side surface of the battery storage cabinet are not perpendicular to each other, which means that the energy storage battery pack in the battery storage bin has a certain inclination angle when placed. When the openable and closable door is opened, the gravity direction component force existing at the inclination angle can cause the energy storage battery pack in the battery storage bin to slide out of the battery storage bin. In this way, the energy storage battery pack in the battery storage bin can be ejected to the outside of the battery storage bin under the second preset abnormal state of high temperature and high smoke concentration of the battery pack, so as to perform good pressure relief operation and prevent large-scale fire, while avoiding the situation that the battery cells of the energy storage battery pack are seriously damaged due to continuous high temperature or fire.

[0017] Furthermore, when the detection unit detects that any of the battery storage compartments is in the first preset abnormal state, the control unit can control the energy storage battery pack in the battery storage compartment in the first preset abnormal state to be powered off, and control the abnormality processing unit to perform the first warning processing. In other words, the first preset abnormal state is a situation where the temperature and smoke concentration are slightly abnormal. At this time, it can be suppressed by power off and first warning processing, so as to determine whether the current first preset abnormal state can be effectively resolved. If the first preset abnormal state cannot be effectively resolved, the battery storage compartment has changed from the first preset abnormal state to the more serious second preset abnormal state. At this time, the energy storage battery pack in the battery storage compartment is ejected out of the battery storage compartment to prevent the battery cells of the energy storage battery pack from being more seriously damaged, and at the same time, more serious safety risks of fire or even explosion can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following is a brief description of the drawings required for use in the description of the embodiments. Obviously, the drawings described are only part of the embodiments of the present application, not all of the embodiments, and those skilled in the art can also obtain other design solutions and drawings based on these drawings without creative work.

[0019] Figure 1 is an overall block diagram of a battery pack abnormality processing system according to an embodiment of the present application; Figure 2 is a schematic diagram of the interior of a battery storage cabinet in a second preset abnormal state according to an embodiment of the present application; Figure 3 It is a three-dimensional schematic diagram showing an energy storage battery pack located in a battery storage compartment according to an embodiment of the present application; Figure 4 It is a side schematic diagram of an energy storage battery pack abutting against a locking mechanism according to an embodiment of the present application; Figure 5A schematic diagram of a single battery storage compartment with an openable and closable door opened according to an embodiment of the present application; Figure 6 This is a schematic diagram of the interior of a battery storage cabinet under normal circumstances according to an embodiment of the present application; Figure 7 The present invention is a flowchart of a control method of a battery pack abnormality processing system according to an embodiment of the present application.

[0020] Reference numerals Battery storage cabinet 1, battery storage compartment 2, energy storage battery pack 3, openable and closable door 4, temperature sensor 5, smoke sensor 6, elastic member 7, gas-liquid output device 8, pulley device 9, locking mechanism 10, alarm 11, latch 12, support beam device 13. DETAILED DESCRIPTION

[0021] Example embodiments are now described more fully in conjunction with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this application will be more comprehensive and complete and fully convey the concept of the example embodiments to those skilled in the art.

[0022] In addition, described feature, structure or characteristic can be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided so as to provide a full understanding of the embodiments of the present application. However, it will be appreciated by those skilled in the art that the technical scheme of the present application can be put into practice without one or more of the specific details, or other methods, components, devices, steps, etc. can be adopted. In other cases, known methods, devices, realizations or operations are not shown or described in detail to avoid blurring the various aspects of the present application.

[0023] The block diagrams shown in the accompanying drawings are only functional entities and do not necessarily correspond to physically independent entities. These functional entities can be implemented in software form, or in one or more hardware modules or integrated circuits, or in different networks and / or processor devices and / or micro-control node devices.

[0024] The flowcharts shown in the accompanying drawings are only exemplary and do not necessarily include all the contents and operations / steps, nor must they be executed in the order described. For example, some operations / steps can be decomposed, and some operations / steps can be combined or partially combined, so the actual execution order may change according to actual conditions.

[0025] It should be noted that the "multiple" mentioned in this article refers to two or more. "And / or" describes the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0026] The following is a detailed introduction to the battery pack abnormality processing system proposed in the embodiment of the present application: like Figure 1 , Figure 2 and Figure 3 As shown, Figure 1 This is the overall framework diagram of the battery pack abnormality processing system proposed in this application. Figure 2 This is a specific structural diagram (side view) of the battery pack abnormality processing system proposed in this application. Figure 3 It is a three-dimensional schematic diagram of the energy storage battery pack 3 placed in the battery storage cabinet 1.

[0027] According to one aspect of an embodiment of the present application, a battery pack abnormality processing system is provided, comprising a battery storage cabinet 1, a control unit, a detection unit and an abnormality processing unit, wherein the control unit is connected to the detection unit and the abnormality processing unit respectively; the battery storage cabinet 1 comprises a plurality of battery storage compartments 2, each of which stores an energy storage battery pack 3, each of which is electrically connected to the control unit, and the bottom surface of the battery storage compartment 2 is not perpendicular to the side surface of the battery storage cabinet 1; the detection unit and the abnormality processing unit are arranged in each of the battery storage compartments 2; each of the battery storage compartments 2 is provided with an openable and closable door 4, and each of the openable and closable door 4 is connected to the control unit; When the detection unit detects that any of the battery storage compartments 2 is in a first preset abnormal state, the control unit controls the energy storage battery pack 3 in the battery storage compartment 2 in the first preset abnormal state to be powered off, and controls the abnormality processing unit to perform a first warning process; When the detection unit detects that any of the battery storage compartments 2 is in the second preset abnormal state, the control unit controls the openable and closable door 4 of the battery storage compartment 2 in the second preset abnormal state to open, and controls the abnormality processing unit to perform a second early warning process to pop out the energy storage battery pack 3 in the battery storage compartment 2 in the second preset abnormal state to the outside of the battery storage compartment 2.

[0028] Among them, the first preset abnormal state is used to characterize that the temperature value in the battery storage compartment 2 is higher than the first preset temperature threshold or the smoke concentration value in the battery storage compartment 2 is higher than the first preset concentration value; the second preset abnormal state is used to characterize that the temperature value in the battery storage compartment 2 is higher than the second preset temperature threshold and the smoke concentration value in the battery storage compartment 2 is higher than the second preset concentration value.

[0029] Specifically, the first preset temperature threshold and the second preset temperature threshold can be set arbitrarily as needed, but the second preset temperature threshold needs to be greater than the first preset temperature threshold, for example, the second preset temperature threshold can be set to 100 degrees Celsius, and the first preset temperature threshold can be set to 70 degrees Celsius. Of course, 70 degrees Celsius and 100 degrees Celsius are only exemplary values, and the specific values ​​of the first preset temperature threshold and the second preset temperature threshold are not limited in this application.

[0030] The fact that the bottom surface of the battery storage compartment 2 is not perpendicular to the side surface of the battery storage cabinet 1 indicates that the energy storage battery pack 3 in the battery storage compartment 2 has a certain tilt angle when placed. When the openable and closable door 4 is opened, the gravity direction component force existing at the tilt angle can cause the energy storage battery pack 3 in the battery storage compartment 2 to slide out of the battery storage compartment 2. In this way, the energy storage battery pack 3 in the battery storage compartment 2 can be ejected to the outside of the battery storage compartment 2 under the second preset abnormal state of high battery pack temperature and high smoke concentration, so as to perform good pressure relief operation and prevent large-scale fire. At the same time, it is possible to avoid the situation where the battery cells of the energy storage battery pack 3 are seriously damaged due to continued high temperature or fire.

[0031] Furthermore, when the detection unit detects that any of the battery storage compartments 2 is in the first preset abnormal state, the control unit can control the energy storage battery pack 3 in the battery storage compartment 2 in the first preset abnormal state to be powered off, and control the abnormality processing unit to perform the first warning processing. In other words, the first preset abnormal state is a situation where the temperature and smoke concentration are slightly abnormal. At this time, it can be suppressed by power off and first warning processing, so as to determine whether the current first preset abnormal state can be effectively resolved. If the first preset abnormal state cannot be effectively resolved, the battery storage compartment 2 has changed from the first preset abnormal state to the more serious second preset abnormal state. At this time, the energy storage battery pack 3 in the battery storage compartment 2 is ejected out of the battery storage compartment 2 to prevent the battery cells of the energy storage battery pack 3 from being more seriously damaged, and at the same time, more serious safety risks of fire or even explosion can be avoided.

[0032] In one embodiment of the present application, the detection unit includes a plurality of temperature sensors 5 and a plurality of smoke sensors 6, and the plurality of temperature sensors 5 and the plurality of smoke sensors 6 are respectively arranged in each of the battery storage compartments 2; the temperature sensors 5 and the smoke sensors 6 are respectively used to detect the temperature value and the smoke concentration value in the battery storage compartment 2; the first preset abnormal state is used to characterize that the temperature value in the battery storage compartment 2 is higher than a first preset temperature threshold value and / or the smoke concentration value in the battery storage compartment 2 is higher than a first preset concentration value.

[0033] Specifically, each battery storage compartment 2 is provided with a temperature sensor 5 and a smoke sensor 6, wherein the temperature sensor 5 and the smoke sensor 6 can be arranged on the top of the battery storage compartment 2, or on the side wall of the battery storage compartment 2, such as Figure 2 As shown, the temperature sensor 5 and the smoke sensor 6 are located at the top of the battery storage compartment 2 to avoid damage to the temperature sensor 5 and the smoke sensor 6 at the top of the battery storage compartment 2 in the event of a fire.

[0034] In one embodiment of the present application, the exception handling unit includes a plurality of elastic members 7 and a plurality of gas-liquid output devices 8; the plurality of gas-liquid output devices 8 are respectively arranged in each of the battery storage bins 2, and each of the gas-liquid output devices 8 is electrically connected to the control unit, and the plurality of elastic members 7 are respectively arranged in each of the battery storage bins 2, and the elastic members 7 are used to provide thrust to the energy storage battery pack 3 when the openable and closable door body 4 is opened, so that the energy storage battery pack 3 is ejected out of the battery storage bin 2.

[0035] Specifically, when it is detected that the battery storage compartment 2 has a temperature value greater than a first preset temperature threshold or a smoke concentration value greater than a first preset concentration threshold, it means that the battery storage compartment 2 is in a first preset abnormal state. Figure 2 The gas-liquid output device 8, i.e., the gas-liquid delivery pipeline, disposed on the top of the battery storage compartment 2, performs cooling or fire extinguishing by delivering aerosol and / or perfluoroacetone fire extinguishing agent. The gas-liquid output device 8 can place a box storing aerosol or perfluoroacetone fire extinguishing agent outside the battery storage cabinet 1, and extend into each battery storage compartment 2 through a plurality of gas-liquid delivery pipelines.

[0036] It should be noted that Figure 2 Although only two battery storage compartments 2 are included, the number of battery storage compartments 2 is not limited in this application. Figure 2 The two battery storage compartments 2 are merely exemplary numbers.

[0037] Furthermore, the elastic member 7 can be specifically a spring, but when the temperature value in the battery storage compartment 2 is less than the first preset temperature threshold and the smoke concentration value is less than the first preset concentration threshold, it indicates that the battery storage compartment 2 is in a normal state. At this time, the elastic member 7 (spring) is in a compressed state, and when the openable and closable door body 4 is opened, the elastic member 7 is released, that is, it is reset from the compressed state to the normal extended state. In this process, it provides thrust for the energy storage battery pack 3, so that the energy storage battery pack 3 has both thrust and the gravity component due to the tilted state. The double force support enables the energy storage battery pack 3 to be ejected out of the battery storage compartment 2 more quickly.

[0038] In one embodiment of the present application, the battery pack abnormality processing system also includes a buffer device, which is arranged on the outside of the battery storage cabinet 1 and is used to buffer the ejected energy storage battery pack 3 to prevent the energy storage battery pack 3 from being damaged after being ejected.

[0039] For example, the buffer device may be a sand pit, and the energy storage battery pack 3 falls into the sand pit after being ejected. Due to the buffering effect provided by the sand pit, the energy storage battery pack 3 can minimize the damage suffered.

[0040] In one embodiment of the present application, the abnormality handling unit further includes a plurality of support beam devices 13, a plurality of locking mechanisms 10 and a plurality of pulley devices 9, and each of the battery storage bins 2 is provided with the support beam device 13, the locking mechanism 10 and the pulley device 9; the support beam device 13 is provided on the bottom surface of the battery storage bin 2, and the locking mechanism 10 can be lifted and lowered on the support beam device 13, and the locking mechanism 10 can be lifted and lowered in the support beam device 13, and the locking mechanism 10 is used to lock the energy storage battery pack 3 when the battery storage bin 2 is in a normal state, and to release the energy storage battery pack 3 when the battery storage bin 2 is in the second preset abnormal state; the pulley device 9 is embedded in the support beam device 13, and the pulley device 9 abuts against the lower surface of the energy storage battery pack 3.

[0041] Specifically, refer to Figure 2 , Figure 3 and Figure 6 As shown, the locking mechanism 10 and the pulley device 9 are arranged on the support beam device 13 of the battery storage compartment 2. The locking mechanism 10 can be composed of a plurality of latches 12, each of which is embedded in the support beam device 13 at intervals, and each of which is connected to a motor. The pulley device 9 can be specifically a bearing, and the lower half of each pulley device 9 is embedded in the support beam device 13. The control unit can control the rise and fall of each latch 12 by controlling the motor. In a normal state, as shown in FIG. Figure 3As shown, each latch 12 is connected to the side shell of the energy storage battery pack 3 to lock the energy storage battery pack 3 and prevent the energy storage battery pack 3 from moving due to the pulley and its own gravity.

[0042] Specific examples include Figure 4 as well as Figure 5 As shown, Figure 4 1 is a side view of the energy storage battery pack 3 and the locking mechanism 10. Both sides of the energy storage battery pack 3 can be abutted against the locking mechanism 10. It should be noted that each battery storage compartment 2 is equipped with an openable and closable door 4. Figure 5 This is a schematic diagram of a single battery storage compartment 2 with the openable and closable door 4 opened.

[0043] When the battery storage compartment 2 is in the second preset abnormal state, the control unit controls the locking mechanism 10 to descend and controls the corresponding openable and closable door body 4 to open to release the energy storage battery pack 3, and controls the elastic member 7 to release so that the elastic member 7 provides a thrust to eject the energy storage battery pack 3 out of the battery storage compartment 2; wherein, the second preset temperature threshold is greater than the first preset temperature threshold, and the second preset concentration value is greater than the first preset concentration value.

[0044] Specifically, when the battery storage compartment 2 is in the second preset abnormal state, the openable and closable door 4 is opened, and at this time, each latch 12 drops. The energy storage battery pack 3, which no longer has the locking position of the locking mechanism 10, will be ejected out of the battery storage compartment 2 due to the pulley, its own gravity and the thrust provided by the elastic member 7.

[0045] In one embodiment of the present application, the abnormality handling unit further includes an alarm 11, which is disposed on the outer top of the battery storage cabinet 1 and is electrically connected to the control unit; wherein, when the battery storage compartment 2 is in the first preset abnormal state or the second preset abnormal state, the control unit controls the alarm 11 to sound an alarm. It should be noted that the position of the alarm 11 is not limited to the outer top of the battery storage cabinet 1, but can also be disposed at multiple positions such as the outer side surface of the battery storage cabinet 1, the front door of the battery storage cabinet 1, etc. wherein, the front door of the battery storage cabinet can be set to one, because the openable and closable door body 4 of the battery storage compartment 2 is the rear door of the battery storage cabinet, and by opening the front door of the battery storage cabinet 1, the ejected energy storage battery pack 3 can be reinstalled into the battery storage compartment 2, and re-locked by the locking mechanism 10.

[0046] Specifically, one or more alarms 11 may be provided. Figure 2As shown, the number of alarms 11 is set to one, and is arranged on the outer top of the battery storage cabinet 1. Whether the battery storage compartment 2 is in the first preset abnormal state or the second preset abnormal state, an alarm will be issued so as to handle the abnormal situation in time.

[0047] In one embodiment of the present application, the second warning processing is that the control unit controls the elastic member 7 in the battery storage compartment 2 in the second preset abnormal state to release and controls the alarm 11 to sound an alarm, and controls the locking mechanism 10 to descend to release the energy storage battery pack 3, so that the energy storage battery pack 3 is ejected out of the battery storage compartment 2 under the thrust provided by the elastic member 7.

[0048] Specifically, the control unit can be specifically an EMS (Energy Management System) system, in which the battery storage cabinet 1 serves as the carrier of the entire battery pack abnormality processing system, and a fire protection system (the gas-liquid output device 8 described above) and a thermal management system (air conditioning, etc.) are also placed inside it, which are not listed one by one here. When an abnormal situation occurs, the fire protection system and the thermal management system can be used to extinguish the fire / cool down to prevent the abnormal situation from further aggravating. When a more serious situation occurs, the energy storage battery pack 3 is ejected in time to prevent the energy storage battery pack 3 from being more seriously damaged, and to avoid the possible safety risks of aggravated fire or even explosion. It should be noted that the energy storage battery pack 3 is connected to the control unit through an electrical interface, and the electrical interface is not illustrated in each of the drawings.

[0049] According to one aspect of an embodiment of the present application, a control method for a battery pack abnormality processing system is provided, which is applied to the battery pack abnormality processing system described in the above embodiment, and the method is executed in a control unit as described in the above embodiment. Figure 7 This is a flow chart of a control method of a battery pack abnormality processing system according to an embodiment of the present application. The method includes at least steps S1 to S4, which are described in detail as follows: In step S1, temperature data and smoke density data collected by a detection unit are obtained.

[0050] Specifically, the temperature data and the smoke concentration data can be periodically acquired by the temperature sensor and the smoke sensor in the abnormality handling unit. The temperature data can be composed of the temperature values ​​of each battery storage bin, and the smoke concentration data can be composed of the smoke concentration values ​​of each battery storage bin.

[0051] In step S2, it is determined whether any battery storage compartment in the battery storage cabinet is in a first preset abnormal state or a second preset abnormal state based on the temperature data and the smoke concentration data.

[0052] In one embodiment of the present application, the determining whether any battery storage compartment in the battery storage cabinet is in a first preset abnormal state or a second preset abnormal state based on the temperature data and the smoke concentration data includes: Acquire the temperature value of each battery storage compartment in the battery storage cabinet based on the temperature data, and acquire the smoke concentration value of each battery storage compartment based on the smoke concentration data; If any of the temperature values ​​is greater than the first preset temperature threshold and / or any of the smoke concentration values ​​is greater than the first preset concentration threshold, it is determined that the target battery storage compartment whose temperature value is greater than the first preset temperature threshold is in the first preset abnormal state and / or the target battery storage compartment whose smoke concentration value is greater than the first preset concentration threshold is in the first preset abnormal state; If the temperature value of the target battery storage compartment is greater than a second preset temperature threshold and the smoke concentration value is greater than a second preset concentration threshold, it is determined that the target battery storage compartment is in the second preset abnormal state; The second preset temperature threshold is greater than the first preset temperature threshold, and the second preset concentration value is greater than the first preset concentration value.

[0053] Specifically, if there is a situation where the temperature value is greater than the first preset temperature threshold or the smoke concentration value is greater than the first preset concentration threshold, or the temperature value is greater than the first preset temperature threshold and the smoke concentration value is greater than the first preset concentration threshold, the energy storage battery pack of the battery storage cabinet is controlled to stop working, so that the input current and output current of the energy storage battery pack are reduced to zero; aerosol or perfluoroacetone fire extinguishing agent is released to cool down / extinguish the energy storage battery pack; and the alarm is controlled to sound an alarm.

[0054] If the temperature value continues to rise and the smoke concentration value continues to increase, at this time, the temperature value of the target battery storage bin is greater than the second preset temperature threshold and the smoke concentration value is greater than the second preset concentration threshold, the openable and closable door of the corresponding target battery storage bin is controlled to open automatically, so that the energy storage battery pack is ejected. It should be noted that the target battery storage bin refers to a battery storage bin that is in the first preset abnormal state or in the second preset abnormal state.

[0055] In step S3, if the target battery storage compartment is in the first preset abnormal state, the energy storage battery pack in the target battery storage compartment is controlled to be powered off, and the abnormality processing unit is controlled to perform a first warning process.

[0056] Specifically, the first warning process is to control the gas-liquid output device in the target battery storage compartment in the first preset abnormal state to output aerosol and / or perfluoroacetone fire extinguishing agent, and perform an alarm operation.

[0057] In step S4, if the target battery storage bin is in the second preset abnormal state, the openable and closable door of the target battery storage bin is controlled to open, and the abnormality handling unit is controlled to perform a second early warning process to eject the energy storage battery pack in the target battery storage bin out of the battery storage bin.

[0058] Specifically, the second warning process is to control the release of the elastic member in the target battery storage bin in the second preset abnormal state and to perform an alarm operation, and to control the locking mechanism to descend to release the energy storage battery pack, so that the energy storage battery pack is ejected out of the battery storage bin under the thrust provided by the elastic member.

[0059] Among them, Figure 2 As shown, the angle formed by the bottom surface of the battery storage bin and the right side surface of the battery storage cabinet is between 60° and 80°, that is, the angle between the energy storage battery pack and the horizontal plane is between 10° and 30°, that is, the inclination angle of the energy storage battery pack is between 10° and 30°. The front end of the energy storage battery pack has electrical and communication plug-in interfaces, which can fully match the plug-in interfaces on the internal structural parts of the battery storage cabinet, so as to realize the electrical connection between the control unit and the energy storage battery pack. There are multiple battery storage bins arranged up and down in the battery storage cabinet, and each battery storage bin is equipped with an openable and closable door body separately. Each openable and closable door body can be automatically opened by a control unit. Under normal circumstances, the openable and closable door body of the battery storage bin is in a long-term closed state.

[0060] To summarize, the fact that the bottom surface of the battery storage bin and the side surface of the battery storage cabinet are not perpendicular to each other indicates that the energy storage battery pack in the battery storage bin has a certain inclination angle when placed. When the openable and closable door is opened, the gravity direction component force existing at the inclination angle can cause the energy storage battery pack in the battery storage bin to slide out of the battery storage bin. In this way, in the second preset abnormal state of high temperature and high smoke concentration of the battery pack, the energy storage battery pack in the battery storage bin can be ejected to the outside of the battery storage bin, so as to perform a good pressure relief operation and prevent large-scale fires, while avoiding the situation where the battery cells of the energy storage battery pack are seriously damaged due to continued high temperature or fire.

[0061] Furthermore, when the detection unit detects that any of the battery storage compartments is in the first preset abnormal state, the control unit can control the energy storage battery pack in the battery storage compartment in the first preset abnormal state to be powered off, and control the abnormality processing unit to perform the first warning processing. In other words, the first preset abnormal state is a situation where the temperature and smoke concentration are slightly abnormal. At this time, it can be suppressed by power off and first warning processing, so as to determine whether the current first preset abnormal state can be effectively resolved. If the first preset abnormal state cannot be effectively resolved, the battery storage compartment has changed from the first preset abnormal state to the more serious second preset abnormal state. At this time, the energy storage battery pack in the battery storage compartment is ejected out of the battery storage compartment to prevent the battery cells of the energy storage battery pack from being more seriously damaged, and at the same time, more serious safety risks of fire or even explosion can be avoided.

[0062] In addition, the above-mentioned figures are only schematic illustrations of the processes included in the method according to the exemplary embodiment of the present application, and are not intended to be limiting. It is easy to understand that the processes shown in the above-mentioned figures do not indicate or limit the time sequence of these processes. In addition, it is also easy to understand that these processes can be performed synchronously or asynchronously in multiple modules.

[0063] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be performed without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A battery pack abnormality processing system, characterized in that: It comprises a battery storage cabinet, a control unit, a detection unit and an abnormality handling unit, wherein the control unit is connected to the detection unit and the abnormality handling unit respectively; the battery storage cabinet comprises a plurality of battery storage compartments, each of which stores an energy storage battery pack, each of which is electrically connected to the control unit, and the bottom surface of the battery storage compartment is not perpendicular to the side surface of the battery storage cabinet; the detection unit and the abnormality handling unit are arranged in each of the battery storage compartments; each of the battery storage compartments is provided with an openable and closable door, and each of the openable and closable door is connected to the control unit; When the detection unit detects that any of the battery storage compartments is in a first preset abnormal state, the control unit controls the energy storage battery pack in the battery storage compartment in the first preset abnormal state to be powered off, and controls the abnormality processing unit to perform a first warning process; When the detection unit detects that any one of the battery storage bins is in the second preset abnormal state, the control unit controls the openable and closable door of the battery storage bin in the second preset abnormal state to open, and controls the abnormality processing unit to perform a second early warning process to eject the energy storage battery pack in the battery storage bin in the second preset abnormal state out of the battery storage bin.

2. The battery pack abnormality processing system according to claim 1, characterized in that: The detection unit includes multiple temperature sensors and multiple smoke sensors, and the multiple temperature sensors and the multiple smoke sensors are respectively arranged in each of the battery storage compartments; the temperature sensors and the smoke sensors are respectively used to detect the temperature value and the smoke concentration value in the battery storage compartment; the first preset abnormal state is used to characterize that the temperature value in the battery storage compartment is higher than a first preset temperature threshold and / or the smoke concentration value in the battery storage compartment is higher than a first preset concentration value.

3. The battery pack abnormality processing system according to claim 2, characterized in that: The exception handling unit includes a plurality of elastic members and a plurality of gas-liquid output devices; the plurality of gas-liquid output devices are respectively arranged in each of the battery storage bins, and each of the gas-liquid output devices is electrically connected to the control unit; the plurality of elastic members are respectively arranged in each of the battery storage bins, and the elastic members are used to provide thrust to the energy storage battery pack when the openable and closable door is opened, so that the energy storage battery pack is ejected out of the battery storage bin.

4. The battery pack abnormality processing system according to claim 3, characterized in that: The abnormality handling unit also includes a plurality of support beam devices, a plurality of locking mechanisms and a plurality of pulley devices, and each of the battery storage bins is provided with the support beam device, the locking mechanism and the pulley device; the support beam device is provided on the bottom surface of the battery storage bin, the locking mechanism can be lifted on the support beam device, the locking mechanism can be lifted and moved in the support beam device, and the locking mechanism is used to lock the energy storage battery pack when the battery storage bin is in a normal state, and to release the energy storage battery pack when the battery storage bin is in the second preset abnormal state; the pulley device is embedded in the support beam device, and the pulley device abuts against the lower surface of the energy storage battery pack.

5. The battery pack abnormality processing system according to claim 4, characterized in that: The second preset abnormal state is used to characterize that the temperature value in the battery storage bin is higher than a second preset temperature threshold and the smoke concentration value in the battery storage bin is higher than a second preset concentration value; when the battery storage bin is in the second preset abnormal state, the control unit controls the locking mechanism to descend and controls the openable and closable door to open to release the energy storage battery pack, and controls the elastic member to release so that the elastic member provides thrust to eject the energy storage battery pack out of the battery storage bin; wherein, the second preset temperature threshold is greater than the first preset temperature threshold, and the second preset concentration value is greater than the first preset concentration value.

6. The battery pack abnormality processing system according to claim 5, characterized in that: The abnormality handling unit also includes an alarm, which is arranged on the outer top of the battery storage cabinet and is electrically connected to the control unit; wherein, when the battery storage compartment is in the first preset abnormal state or the second preset abnormal state, the control unit controls the alarm to sound an alarm.

7. The battery pack abnormality processing system according to claim 6, characterized in that: The first warning process is that the control unit controls the gas-liquid output device in the battery storage bin in the first preset abnormal state to output aerosol and / or perfluoroacetone fire extinguishing agent, and controls the alarm to sound an alarm; the second warning process is that the control unit controls the elastic member in the battery storage bin in the second preset abnormal state to release and controls the alarm to sound an alarm, and controls the locking mechanism to descend to release the energy storage battery pack, so that the energy storage battery pack is ejected out of the battery storage bin under the thrust provided by the elastic member.

8. A control method for a battery pack abnormality processing system, characterized in that: Applied to the battery pack abnormality processing system according to any one of claims 1 to 7, the method is executed in the control unit according to any one of claims 1 to 7, and the method includes: Acquire temperature data and smoke concentration data collected by the detection unit; Determine whether any battery storage compartment in the battery storage cabinet is in a first preset abnormal state or a second preset abnormal state based on the temperature data and the smoke concentration data; If the target battery storage compartment is in the first preset abnormal state, the energy storage battery pack in the target battery storage compartment is controlled to be powered off, and the abnormality processing unit is controlled to perform a first warning process; If the target battery storage bin is in the second preset abnormal state, the openable and closable door of the target battery storage bin is controlled to open, and the abnormality processing unit is controlled to perform a second early warning process to eject the energy storage battery pack in the target battery storage bin out of the battery storage bin.

9. The control method of the battery pack abnormality processing system according to claim 8, characterized in that: The determining whether any battery storage compartment in the battery storage cabinet is in a first preset abnormal state or a second preset abnormal state based on the temperature data and the smoke concentration data includes: Acquire the temperature value of each battery storage compartment in the battery storage cabinet based on the temperature data, and acquire the smoke concentration value of each battery storage compartment based on the smoke concentration data; If any of the temperature values ​​is greater than the first preset temperature threshold and / or any of the smoke concentration values ​​is greater than the first preset concentration threshold, it is determined that the target battery storage compartment whose temperature value is greater than the first preset temperature threshold is in the first preset abnormal state and / or the target battery storage compartment whose smoke concentration value is greater than the first preset concentration threshold is in the first preset abnormal state; If the temperature value of the target battery storage compartment is greater than a second preset temperature threshold and the smoke concentration value is greater than a second preset concentration threshold, it is determined that the target battery storage compartment is in the second preset abnormal state; The second preset temperature threshold is greater than the first preset temperature threshold, and the second preset concentration value is greater than the first preset concentration value.

10. The control method based on the battery pack abnormality processing system according to claim 9, characterized in that: The first early warning process is to control the gas-liquid output device in the target battery storage bin in the first preset abnormal state to output aerosol and / or perfluoroacetone fire extinguishing agent, and perform an alarm operation; the second early warning process is to control the elastic member in the target battery storage bin in the second preset abnormal state to release and perform an alarm operation, and control the locking mechanism to descend to release the energy storage battery pack, so that the energy storage battery pack is ejected out of the battery storage bin under the thrust provided by the elastic member.

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