Rear-mounted battery protection method, device and vehicle

Abstract

The present application relates to a method and device for protecting a rear-mounted battery and a vehicle, and relates to the technical field of vehicle batteries. It includes: obtaining the real-time pressure value of the battery on the battery box; obtaining the real-time pressure difference between the real-time pressure value and a preset pressure threshold through a controller; obtaining the real-time air charging and discharging value of the airbag according to the real-time pressure difference and a preset air pressure adjustment method; performing air charging and discharging treatment on the airbag by an air charging and discharging device according to the real-time air charging and discharging value to prevent violent shaking of the electrolyte inside the battery. The battery of the present invention has a longer service life, and it is less likely to have faults such as power shortage, improving driving safety.

Description

Technical Field

[0001] This application relates to the technical field of vehicle batteries, and particularly to a method and device for protecting a rear-mounted battery and a vehicle. Background Art

[0002] Currently, existing rear-mounted battery boxes and batteries are all fixed components installed on the vehicle frame, and there is no dedicated protection device or method on the vehicle frame to protect the above-mentioned battery box and battery. Therefore, the prior art cannot automatically adapt and adjust to the motion state of the whole vehicle and the vehicle frame.

[0003] When the vehicle passes through some positions with large vibration amplitudes, especially when the vehicle passes through mountainous and hilly areas with large slopes and many curves, due to the large vibration amplitude at the rear of the vehicle frame, the existing battery box and battery are easily damaged. As a result, the service life of the battery is short, and the battery is prone to problems such as power loss, which in turn affects driving safety. Therefore, it is necessary to improve this situation. Summary of the Invention

[0004] Embodiments of this application provide a method for protecting a rear-mounted battery and a battery box to solve the problem that the existing battery box and battery are easily damaged, resulting in a short service life of the battery.

[0005] In a first aspect, the present invention provides a method for protecting a rear-mounted battery, which includes: obtaining a real-time pressure value of the battery on the battery box; obtaining, by a controller, a real-time pressure difference between the real-time pressure value and a preset pressure threshold; obtaining a real-time inflation and deflation value of an airbag according to the real-time pressure difference and a preset air pressure adjustment method; and performing inflation and deflation processing on the airbag by an inflation and deflation device according to the real-time inflation and deflation value to prevent violent shaking of the electrolyte inside the battery.

[0006] In some embodiments, obtaining the real-time pressure value of the battery on the battery box includes: reading, by a pressure sensor, the battery pressure value of the battery on the battery box; obtaining the movement trend of the battery on the battery box, and updating the battery pressure value to a positive pressure value or a negative pressure value according to the movement trend; and using the positive pressure value or the negative pressure value as the real-time pressure value.

[0007] In some embodiments, obtaining, by the controller, the real-time pressure difference between the real-time pressure value and the preset pressure threshold includes: if the real-time pressure value is a positive pressure value, obtaining in real time the pressure difference between the positive pressure value and the preset pressure threshold, denoted as the positive pressure difference; if the real-time pressure value is a negative pressure value, obtaining in real time the pressure difference between the absolute value of the negative pressure value and the preset pressure threshold, denoted as the negative pressure difference; and using the positive pressure difference or the negative pressure difference as the real-time pressure difference.

[0008] In some embodiments, obtaining the real-time inflation and deflation value of the airbag according to the real-time pressure difference and the preset air pressure adjustment method includes: obtaining a preset air pressure adjustment table, where the air pressure adjustment table is used to reflect the corresponding relationship between different real-time pressure differences and different inflation and deflation values; if the real-time pressure difference is a positive pressure difference, obtaining the inflation and deflation value of the airbag according to the positive pressure difference and the preset air pressure adjustment table, and recording it as the positive inflation and deflation value; if the real-time pressure difference is a negative pressure difference, obtaining the inflation and deflation value of the airbag according to the negative pressure difference and the preset air pressure adjustment method, and recording it as the negative inflation and deflation value; using the positive inflation and deflation value or the negative inflation and deflation value as the real-time inflation and deflation value.

[0009] In some embodiments, performing inflation and deflation processing on the airbag by the inflation and deflation device according to the real-time inflation and deflation value to prevent the electrolyte inside the storage battery from shaking violently includes: if the real-time inflation and deflation value is the positive inflation and deflation value, inflating the airbag by the inflation and deflation device according to the positive inflation and deflation value to prevent the electrolyte inside the storage battery from shaking violently; if the real-time inflation and deflation value is the negative inflation and deflation value, deflating the airbag by the inflation and deflation device according to the negative inflation and deflation value to prevent the electrolyte inside the storage battery from shaking violently.

[0010] In some embodiments, inflating the airbag by the inflation and deflation device according to the positive inflation and deflation value includes: inputting the positive inflation and deflation value into the solenoid valve by the controller, turning on the solenoid valve switch, and inflating the airbag according to the positive inflation and deflation value by the air source provided by the air storage tank; transmitting the air pressure value information inside the airbag to the controller in real time by the pressure sensor, and judging whether the air storage tank needs to continue inflating the airbag through the controller and the positive inflation and deflation value; if so, continuing to inflate the airbag by the air storage tank; if not, stopping inflating the airbag.

[0011] In some embodiments, deflating the airbag by the inflation and deflation device according to the negative inflation and deflation value includes: inputting the negative inflation and deflation value into the solenoid valve by the controller, turning on the solenoid valve switch, and deflating the airbag according to the positive inflation and deflation value by the air source provided by the air storage tank; transmitting the air pressure value information inside the airbag to the controller in real time by the pressure sensor, and judging whether the air storage tank needs to continue deflating the airbag through the controller and the negative inflation and deflation value; if so, continuing to deflate the airbag by the air storage tank; if not, stopping deflating the airbag.

[0012] Second aspect, the present invention provides a rear-mounted battery protection device, including a pressure value acquisition module for acquiring the real-time pressure value of the battery on the battery box; a pressure difference acquisition module for acquiring the real-time pressure difference between the real-time pressure value and a preset pressure threshold through a controller; a charging and discharging air value acquisition module for acquiring the real-time charging and discharging air value of the airbag according to the real-time pressure difference and a preset air pressure adjustment method; and a charging and discharging air module for performing charging and discharging air treatment on the airbag through a charging and discharging air device according to the real-time charging and discharging air value, so as to prevent violent shaking of the electrolyte inside the battery.

[0013] In some embodiments, the pressure value acquisition module includes a battery box installed on the vehicle frame, a battery installed in the battery box, and a pressure sensor for acquiring the real-time pressure value of the battery on the battery box; both the pressure difference acquisition module and the charging and discharging air value acquisition module include a controller; the charging and discharging air module includes a solenoid valve electrically connected to the controller, an airbag electrically connected to one end of the solenoid valve, and an air storage cylinder electrically connected to the other end of the solenoid valve.

[0014] Third aspect, the present invention provides a vehicle, which includes the rear-mounted battery protection device according to claim 8 or 9.

[0015] The embodiments of the present application provide a rear-mounted battery protection method, device and vehicle. When the vehicle passes through some positions with large vibrations, especially when the vehicle passes through mountainous areas, hilly areas, etc. where there are many slopes and curves, the charging and discharging air device is used to perform charging and discharging air treatment on the airbag, thereby preventing violent shaking of the electrolyte inside the battery, reducing the vibration amplitude at the rear of the vehicle frame, and further protecting the battery on the battery box, making it difficult for the battery box and the battery to be damaged. In this way, the battery of the present invention has a long service life, is less likely to have faults such as power loss, and improves driving safety. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a schematic flow chart of the rear-mounted battery protection method of the present invention;

[0018] Figure 2 It is a schematic structural diagram of the rear-mounted battery device of the present invention;

[0019] Figure 3 It is a schematic structural principle diagram of the rear-mounted battery device of the present invention.

[0020] In the figure: 1. Storage battery; 2. Battery box; 3. Pressure sensor; 4. Controller; 5. Solenoid valve; 6. Air storage tank; 7. Vehicle frame; 8. Cross beam; 9. Airbag; 10. Airbag bracket; 11. Storage battery bracket; 21. Pressure value acquisition module; 22. Pressure difference acquisition module; 23. Charge and discharge value acquisition module; 24. Charge and discharge module. Specific embodiments

[0021] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the scope of protection of the present application.

[0022] Currently, the existing rear-mounted battery box 2 and storage battery 1 are fixed components, without special protection devices, dedicated control systems and methods, and cannot automatically adapt and adjust to the motion states of the whole vehicle and the vehicle frame 7. The existing protection methods for the storage battery 1 have the following problems: 1. The existing rear-mounted battery box 2 and storage battery 1 are fixed on the vehicle frame 7 and do not automatically adapt to the motion states of the whole vehicle and the vehicle frame 7. In some positions with large vibration amplitudes, especially in mountainous areas, hilly areas, etc. where there are many slopes and curves, the vibration amplitude of the rear part of the whole vehicle and the vehicle frame 7 is large, resulting in easy damage to the battery box 2 and the storage battery 1, short service life, and easy occurrence of faults such as power loss in the battery box 2 and the storage battery 1, affecting driving safety; 2. Since the existing rear-mounted battery box 2 and storage battery 1 are prone to faults such as power loss, it leads to an increase in manufacturer compensation, affects the attendance rate and timeliness of users, and causes a decrease in user benefits.

[0023] In view of the above technical problems, the embodiments of the present application provide a method for protecting a rear-mounted storage battery 1, which can solve the problem in the related art that the battery box 2 and the storage battery 1 are easily damaged, resulting in a short service life of the storage battery 1. It should be noted that if there are substantially the same results, the method of the present invention is not limited to the structure shown in the drawings.

[0024] The present invention can automatically adjust the motion states of the battery box 2 and the storage battery 1 according to the motion states of the vehicle and the vehicle frame 7, reduce the problems of damage, short service life, power loss, etc. of the battery box 2 and the storage battery 1 caused by the inconsistent motion states of the battery box 2, the storage battery 1, the whole vehicle and the vehicle frame 7, effectively improve the attendance rate, timeliness and driving safety of users, enhance user benefits, and reduce the risk of claims against vehicle manufacturers.

[0025] Such as Figure 1As shown, the present invention provides a method for protecting a rear-mounted battery 1, which includes:

[0026] S1. Obtain the real-time pressure value of the battery 1 on the battery frame 2;

[0027] During actual operation, the steps of obtaining the real-time pressure value include: reading the battery pressure value of the battery 1 on the battery frame 2 through a pressure sensor 3; obtaining the movement trend of the battery 1 on the battery frame 2, and updating the battery pressure value to a positive pressure value or a negative pressure value according to the movement trend; using the positive pressure value or the negative pressure value as the real-time pressure value.

[0028] S2. Obtain the real-time pressure difference between the real-time pressure value and a preset pressure threshold through a controller 4;

[0029] During actual operation, the steps of obtaining the real-time pressure difference include: if the real-time pressure value is a positive pressure value, obtain the pressure difference between the positive pressure value and the preset pressure threshold in real time, denoted as the positive pressure difference; if the real-time pressure value is a negative pressure value, obtain the pressure difference between the absolute value of the negative pressure value and the preset pressure threshold in real time, denoted as the negative pressure difference; using the positive pressure difference or the negative pressure difference as the real-time pressure difference.

[0030] S3. Obtain the real-time inflation and deflation value of the airbag 9 according to the real-time pressure difference and a preset air pressure adjustment method;

[0031] During actual operation, the steps of obtaining the real-time inflation and deflation value include: obtaining a preset air pressure adjustment table, which is used to reflect the corresponding relationship between different real-time pressure differences and different inflation and deflation values; if the real-time pressure difference is a positive pressure difference, obtain the inflation and deflation value of the airbag 9 according to the positive pressure difference and the preset air pressure adjustment table, denoted as the positive inflation and deflation value; if the real-time pressure difference is a negative pressure difference, obtain the inflation and deflation value of the airbag 9 according to the negative pressure difference and the preset air pressure adjustment method, denoted as the negative inflation and deflation value; using the positive inflation and deflation value or the negative inflation and deflation value as the real-time inflation and deflation value.

[0032] S4. Inflate and deflate the airbag 9 by an inflation and deflation device according to the real-time inflation and deflation value to prevent the internal electrolyte of the battery 1 from shaking violently.

[0033] During actual operation, the air charging and discharging device consists of an airbag, a solenoid valve, a controller, etc. The steps of the present invention for charging and discharging the airbag 9 to prevent the electrolyte inside the storage battery 1 from violently shaking are as follows: If the real-time air charging and discharging value is a positive air charging and discharging value, the airbag 9 is inflated through the air charging and discharging device according to the positive air charging and discharging value to prevent the electrolyte inside the storage battery 1 from violently shaking; if the real-time air charging and discharging value is a negative air charging and discharging value, the airbag 9 is deflated through the air charging and discharging device according to the negative air charging and discharging value to prevent the electrolyte inside the storage battery 1 from violently shaking.

[0034] In this step, the step of inflating the airbag 9 according to the positive air charging and discharging value includes: inputting the positive air charging and discharging value into the solenoid valve 5 through the controller 4, opening the switch of the solenoid valve 5, and inflating the airbag 9 according to the positive air charging and discharging value through the air source provided by the air storage tank 6; the air pressure value information inside the airbag 9 is transmitted to the controller 4 in real time through the pressure sensor, and it is judged whether the air storage tank 6 needs to continue to inflate the airbag 9 through the controller 4 and the positive air charging and discharging value; if so, the air storage tank 6 continues to inflate the airbag 9; if not, the inflation of the airbag 9 is stopped.

[0035] In this step, the step of deflating the airbag 9 according to the negative air charging and discharging value includes: inputting the negative air charging and discharging value into the solenoid valve 5 through the controller 4, opening the switch of the solenoid valve 5, and deflating the airbag 9 according to the positive air charging and discharging value through the air source provided by the air storage tank 6; the air pressure value information inside the airbag 9 is transmitted to the controller 4 in real time through the pressure sensor, and it is judged whether the air storage tank 6 needs to continue to deflate the airbag 9 through the controller 4 and the negative air charging and discharging value; if so, the air storage tank 6 continues to deflate the airbag 9; if not, the deflation of the airbag 9 is stopped.

[0036] During actual operation, the controller 4 can be a VECU module (prior art). When the vehicle is driving, when passing through slopes and uneven roads, the battery box 2 and the storage battery 1 will move up and down relatively with the movement state of the vehicle. The present invention specifically protects the storage battery 1 and the battery box 2 in the following way:

[0037] 1. When the vehicle is in a stationary state, the state of the vehicle at this time is defined as the original position state of the battery box 2 (or the original position state of the battery frame). Based on this, the controller 4 calibrates the original air pressure value as P0 (i.e., the preset pressure threshold). When the vehicle is in a moving state, the controller 4 controls the pressure of the airbag 9 in the battery box 2 (battery frame) protection device through the automatic charging and discharging mode, avoiding the up and down movement of the battery and the battery box, preventing the violent shaking of the electrolyte inside the storage battery 1, reducing the violent shaking of the electrolyte inside the storage battery 1, and the damage and power loss caused by the impact of the vehicle's moving state on the battery box 2 and the storage battery 1.

[0038] 2. When the vehicle is in an upward moving state, under the action of inertia, the storage battery 1 has a tendency to move downward in the opposite direction. At this time, the pressure of the airbag 9 in the battery box 2 and the storage battery 1 protection device increases. In the present invention, the pressure sensor 3 can transmit the pressure signal of the storage battery 1 on the battery box 2 (i.e., the real-time pressure value) to the controller 4. The controller 4 calculates the real-time pressure difference according to the magnitude of the real-time pressure value and in combination with the calibrated initial value P0 (i.e., the preset pressure threshold). At this time, the controller 4 further calculates the required inflation amount (i.e., the positive charging and discharging value) of the airbag 9 in combination with the above real-time pressure difference and the diameter and cross-sectional area of the airbag 9 in the storage battery 1 protection device. The controller 4 forms a charging and discharging instruction with the required inflation amount (i.e., the positive charging and discharging value) and transmits it to the solenoid valve 5. The inflation port of the solenoid valve 5 is opened, and the air source provided by the air storage tank 6 is used to inflate the battery box 2 and the storage battery 1 protection device (according to the charging and discharging instruction). The pressure sensor transmits the air pressure value information in the airbag 9 to the controller 4 in real time, and the controller 4 judges whether to continue inflation. After inflation is completed, the controller 4 issues an instruction to the solenoid valve 5 to stop supplying gas, preventing the downward trend of the battery frame and preventing the violent shaking of the electrolyte inside the storage battery 1, reducing the violent shaking of the electrolyte inside the storage battery 1 and the damage and power loss caused by the impact of the vehicle's moving state on the battery box 2 and the storage battery 1.

[0039] 3. When the vehicle is in a downward motion state, due to inertia, the battery 1 will tend to move upward in the opposite direction. At this time, the pressure of the battery box 2 and the battery 1 protection device decreases. The present invention can transmit the pressure signal of the battery 1 on the battery box 2 (i.e., the real-time pressure value) to the controller 4 through the pressure sensor 3. The controller 4 calculates the difference from the original value (i.e., calculates the real-time pressure difference) according to the magnitude of the pressure value and in combination with the calibrated initial value P0 (i.e., the preset pressure threshold). At this time, the controller 4 further calculates the inflation amount required for the airbag 9 (i.e., the negative charge and discharge value) in combination with the above real-time pressure difference and the diameter and cross-sectional area of the airbag 9 in the battery 1 protection device. The controller 4 forms a charge and discharge instruction for the required discharge amount and transmits it to the solenoid valve 5. The inflation port of the solenoid valve 5 is opened, and the air source provided by the air storage tank 6 is used to deflate the battery box 2 and the battery 1 protection device (according to the charge and discharge instruction). After the deflation is completed, the controller 4 issues an instruction to the solenoid valve 5 to stop deflating. By reducing the gas pressure in the battery box 2 and the battery 1 protection device, the upward trend of the battery box is prevented, the violent shaking of the electrolyte inside the battery 1 is prevented, and the damage and power loss caused by the violent shaking of the electrolyte inside the battery 1 and the impact of the vehicle motion state on the battery box 2 and the battery 1 are reduced.

[0040] In a second aspect, the present invention provides a rear-mounted battery protection device, including a pressure value acquisition module 21 for acquiring the real-time pressure value of the battery 1 on the battery box 2; a pressure difference acquisition module 22 for acquiring the real-time pressure difference between the real-time pressure value and the preset pressure threshold through the controller 4; a charge and discharge value acquisition module 23 for acquiring the real-time charge and discharge value of the airbag 9 according to the real-time pressure difference and the preset air pressure adjustment method; and a charge and discharge module 24 for performing charge and discharge processing on the airbag 9 according to the real-time charge and discharge value through a charge and discharge device to prevent the violent shaking of the electrolyte inside the battery 1.

[0041] The pressure value acquisition module 21 includes a battery box 2 installed on the vehicle frame 7, a battery 1 installed in the battery box 2, and a pressure sensor 3 for acquiring the real-time pressure value of the battery 1 on the battery box 2; both the pressure difference acquisition module 22 and the charge and discharge value acquisition module 23 include a controller 4; the charge and discharge module 24 includes a solenoid valve electrically connected to the controller 4, an airbag 9 electrically connected to one end of the solenoid valve, and an air storage tank 6 electrically connected to the other end of the solenoid valve.

[0042] During actual operation, as Figure 3 shown, the rear-mounted battery protection device includes a battery box 2, a battery 1, a pressure sensor 3, a controller 4, a solenoid valve 5, and an air storage tank 6. The above components are logically controlled to be consistent with the motion state of the whole vehicle.

[0043] During actual operation, the battery box 2 and the storage battery 1 are used to provide starting power and conventional power for the whole vehicle; the airbag 9 and the protection device for the storage battery 1 are installed on the vehicle frame 7. The airbag 9 and the protection device for the storage battery 1 are used to fix the battery box 2 and the storage battery 1. The relative static state of the battery box 2 and the storage battery 1 is achieved by the inflation and deflation of the airbag 9; the pressure sensor 3 senses the pressure change in the airbag 9 to ensure that the pressure of the airbag 9 remains unchanged; the controller 4 is used to receive and control the operation of the whole device, and the controller 4 can be a VECU; the solenoid valve 5 is used to receive the instruction of the controller 4 to realize the inflation and deflation functions of the airbag 9; the air storage tank 6 is used to provide the air source required by the whole system.

[0044] In the above technical solution, through the control system, the present invention can adjust the gas pressure in the protection device to ensure that the states of the battery box 2 and the storage battery 1 are consistent with those of the whole vehicle, reduce the acceleration of the battery box 2 and the storage battery 1 in the up and down directions, and improve the reliability of the battery box 2 and the storage battery 1; at the same time, the present invention can also improve the adaptability of the battery box 2 and the storage battery 1 to the state of the whole vehicle through the control system, reduce the probability of failures such as damage and power loss of the battery box 2 and the storage battery 1, extend the short service life of the present invention, improve the user attendance rate, timeliness, driving safety, increase the user's income, and reduce the manufacturer's claims.

[0045] During actual operation, the hardware required in the present invention and its own functions are as shown in the following table:

[0046]

[0047]

[0048] During actual operation, the airbag bracket 9 can be installed on one side of the vehicle frame 7 close to the cross beam 8. The function of the pressure sensor 3 is to sense the pressure change in the protection device of the battery box 2 and the storage battery 1, and transmit the gas pressure signal in the protection device of the battery box 2 and the storage battery 1 to the controller 4. The controller 4 judges the signal transmitted by the pressure sensor 3 and issues an instruction to the solenoid valve 5. The solenoid valve 5 inflates or deflates the airbag 9 according to the signal issued by the controller 4. The battery box 2 and the storage battery 1 are realized through the internal pressure change of the airbag 9, so that the movement states of the battery box 2, the storage battery 1 and the vehicle frame 7 of the whole vehicle are consistent, and further reduce the acceleration of the battery box 2 and the storage battery 1 relative to the vehicle frame 7 in the up and down directions, reduce the force on the battery box 2 and the storage battery 1 and the impact of the internal battery solution, so as to extend the service life of the storage battery 1, reduce the failure rate of the storage battery 1, and improve driving safety.

[0049] During actual operation, the specific limitations of the rear-mounted battery protection device can be referred to the limitations on the protection method of the rear-mounted battery 1 in the above text, which will not be elaborated here. Each module in the above rear-mounted battery protection device can be implemented in whole or in part by software, hardware, and their combination. The specific limitations of the rear-mounted battery protection device can be referred to the limitations on the rear-mounted battery protection device in the above text, which will not be elaborated here. The above modules can be embedded in the processor of the computer device in hardware form or independent of it, or stored in the memory of the computer device in software form, so that the processor can call and execute the operations corresponding to the above modules.

[0050] In a third aspect, the present invention provides a vehicle, which includes a rear-mounted battery protection device.

[0051] During actual operation, due to the above technical effects of the rear-mounted battery protection device, the vehicle including the above rear-mounted battery protection device should also have the same technical effects. During actual operation, the specific limitations of the vehicle of the present invention can be referred to the limitations on the rear-mounted battery protection device in the above text, which will not be elaborated here.

[0052] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0053] 1. The present invention can control the gas pressure to ensure that the states of the battery box 2 and the battery 1 are consistent with the whole vehicle, reduce the movement acceleration of the battery box 2 and the battery 1 in the up and down directions, and improve the reliability of the battery box 2 and the battery 1.

[0054] 2. The present invention can improve the adaptability of the battery box 2 and the battery 1 to the whole vehicle state, avoid faults such as damage, short service life, and power shortage of the battery box 2 and the battery 1, improve the user attendance rate, timeliness, and driving safety, increase the user's income, and reduce the manufacturer's claims.

[0055] In the description of the present application, it should be noted that the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present application. Unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0056] It should be noted that in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising one..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the said element.

Claims

1. A method for protecting a rear-mounted battery, characterized in that, It includes: Obtaining the real-time pressure value of the storage battery (1) on the battery frame (2); Obtaining the real-time pressure difference between the real-time pressure value and the preset pressure threshold through the controller (4); Obtaining the real-time inflation and deflation value of the airbag (9) according to the real-time pressure difference and the preset air pressure regulation method; Performing inflation and deflation processing on the airbag (9) by the inflation and deflation device according to the real-time inflation and deflation value to prevent the electrolyte inside the storage battery (1) from shaking violently; The obtaining of the real-time pressure value of the storage battery (1) on the battery frame (2) includes: Reading the battery pressure value of the storage battery (1) on the battery frame (2) through the pressure sensor (3); Obtaining the movement trend of the storage battery (1) on the battery frame (2), and updating the battery pressure value to a positive pressure value or a negative pressure value according to the movement trend; Taking the positive pressure value or the negative pressure value as the real-time pressure value; The obtaining of the real-time pressure difference between the real-time pressure value and the preset pressure threshold through the controller (4) includes: If the real-time pressure value is a positive pressure value, then the pressure difference between the positive pressure value and the preset pressure threshold is obtained in real time, and is recorded as the positive pressure difference; If the real-time pressure value is a negative pressure value, then the pressure difference between the absolute value of the negative pressure value and the preset pressure threshold is obtained in real time, and is recorded as the negative pressure difference; Taking the positive pressure difference or the negative pressure difference as the real-time pressure difference; The obtaining of the real-time inflation and deflation value of the airbag (9) according to the real-time pressure difference and the preset air pressure regulation method includes: Obtaining a preset air pressure regulation table, which is used to reflect the corresponding relationship between different real-time pressure differences and different inflation and deflation values; If the real-time pressure difference is a positive pressure difference, then the inflation and deflation value of the airbag (9) is obtained according to the positive pressure difference and the preset air pressure regulation table, and is recorded as the positive inflation and deflation value; If the real-time pressure difference is a negative pressure difference, then the inflation and deflation value of the airbag (9) is obtained according to the negative pressure difference and the preset air pressure regulation method, and is recorded as the negative inflation and deflation value; Taking the positive inflation and deflation value or the negative inflation and deflation value as the real-time inflation and deflation value.

2. The method for protecting a rear-mounted battery according to claim 1, characterized in that: The performing of inflation and deflation processing on the airbag (9) by the inflation and deflation device according to the real-time inflation and deflation value to prevent the electrolyte inside the storage battery (1) from shaking violently includes: If the real-time inflation and deflation value is a positive inflation and deflation value, then the airbag (9) is inflated by the inflation and deflation device according to the positive inflation and deflation value to prevent the electrolyte inside the storage battery (1) from shaking violently; If the real-time inflation and deflation value is a negative inflation and deflation value, then the airbag (9) is deflated by the inflation and deflation device according to the negative inflation and deflation value to prevent the electrolyte inside the storage battery (1) from shaking violently.

3. The method for protecting a rear-mounted battery according to claim 1, characterized in that: The inflating of the airbag (9) by the inflation and deflation device according to the positive inflation and deflation value includes: Inputting the positive inflation and deflation value into the solenoid valve (5) through the controller (4), opening the switch of the solenoid valve (5), and inflating the airbag (9) according to the positive inflation and deflation value by the air source provided by the air storage tank (6); The air pressure value information inside the airbag (9) is transmitted to the controller (4) in real time through a pressure sensor, and it is judged by the controller (4) and the positive charging and discharging value whether the air storage cylinder (6) needs to continue to inflate the airbag (9); If so, the air storage cylinder (6) continues to inflate the airbag (9); if not, the inflation of the airbag (9) is stopped.

4. The method for protecting a rear-mounted battery according to claim 1, characterized in that: The deflation of the airbag (9) by the charging and discharging device according to the negative charging and discharging value includes: The controller (4) inputs the negative charging and discharging value into the solenoid valve (5), turns on the switch of the solenoid valve (5), and the air source provided by the air storage cylinder (6) deflates the airbag (9) according to the positive charging and discharging value; The air pressure value information inside the airbag (9) is transmitted to the controller (4) in real time through a pressure sensor, and it is judged by the controller (4) and the negative charging and discharging value whether the air storage cylinder (6) needs to continue to deflate the airbag (9); If so, the air storage cylinder (6) continues to deflate the airbag (9); if not, the deflation of the airbag (9) is stopped.

5. A rear-mounted battery protection device, characterized in that: A pressure value acquisition module (21) for acquiring the real-time pressure value of the battery (1) on the battery frame (2); A pressure difference acquisition module (22) for acquiring the real-time pressure difference between the real-time pressure value and the preset pressure threshold through the controller (4); A charging and discharging value acquisition module (23) for acquiring the real-time charging and discharging value of the airbag (9) according to the real-time pressure difference and the preset air pressure adjustment method; A charging and discharging module (24) for charging and discharging the airbag (9) according to the real-time charging and discharging value through a charging and discharging device to prevent the electrolyte inside the battery (1) from shaking violently; The acquisition of the real-time pressure value of the battery (1) on the battery frame (2) includes: Reading the battery pressure value of the battery (1) on the battery frame (2) through a pressure sensor (3); Obtaining the movement trend of the battery (1) on the battery frame (2), and updating the battery pressure value to a positive pressure value or a negative pressure value according to the movement trend; Taking the positive pressure value or the negative pressure value as the real-time pressure value; The acquisition of the real-time pressure difference between the real-time pressure value and the preset pressure threshold through the controller (4) includes: If the real-time pressure value is a positive pressure value, the pressure difference between the positive pressure value and the preset pressure threshold is acquired in real time, and is denoted as the positive pressure difference; If the real-time pressure value is a negative pressure value, the pressure difference between the absolute value of the negative pressure value and the preset pressure threshold is acquired in real time, and is denoted as the negative pressure difference; Taking the positive pressure difference or the negative pressure difference as the real-time pressure difference; The acquisition of the real-time charging and discharging value of the airbag (9) according to the real-time pressure difference and the preset air pressure adjustment method includes: Obtaining a preset air pressure adjustment table, which is used to reflect the corresponding relationship between different real-time pressure differences and different charging and discharging values; If the real-time pressure difference is a positive pressure difference, obtain the inflation and deflation value of the airbag (9) according to the positive pressure difference and a preset air pressure adjustment table, and record it as the positive inflation and deflation value; If the real-time pressure difference is a negative pressure difference, obtain the inflation and deflation value of the airbag (9) according to the negative pressure difference and a preset air pressure adjustment method, and record it as the negative inflation and deflation value; Take the positive inflation and deflation value or the negative inflation and deflation value as the real-time inflation and deflation value.

6. The tail-mounted battery protection device according to claim 5, wherein: The pressure value acquisition module (21) includes a battery box (2) installed on the vehicle frame (7), a storage battery (1) installed in the battery box (2), and a pressure sensor (3) for obtaining the real-time pressure value of the storage battery (1) on the battery box (2); Both the pressure difference acquisition module (22) and the inflation and deflation value acquisition module (23) include a controller (4); The inflation and deflation module (24) includes a solenoid valve electrically connected to the controller (4), an airbag (9) electrically connected to one end of the solenoid valve, and an air storage cylinder (6) electrically connected to the other end of the solenoid valve.

7. A vehicle, wherein: The vehicle includes the rear-mounted storage battery protection device according to claim 5 or 6.

Images