Portable battery pack BMS monitoring system and monitoring method thereof

Abstract

The invention belongs to the technical field of new energy, and particularly relates to a portable battery pack BMS monitoring system and a monitoring method thereof.The system comprises a protective shell, a BMS control mainboard arranged in the protective shell and a wireless positioning module used for regularly refreshing position information for a user mobile terminal; the signal intensity feedback module is used for synchronously detecting the signal intensity of the wireless positioning module according to the position information; the alarm module is triggered by the wireless positioning module and the signal intensity feedback module, generates alarm information and sends the alarm information to a user mobile terminal; wherein a plurality of antenna anode oscillators of the wireless positioning module are uniformly arranged on the inner top surface of the protective cover, an antenna cathode oscillator is an iron box shell of the battery pack, and the alarm module comprises a voice alarm unit and a smoke release warning unit; early warning and smoke release alarm are triggered through weakening of the position and the signal strength, so that the spontaneous combustion condition caused by violent disassembly of the battery is simulated, and a better anti-theft effect is achieved recently.

Description

Technical Field

[0001] The present invention relates to the field of new energy technology, and in particular to a portable battery pack BMS monitoring system and a monitoring method thereof. Background Art

[0002] Since there are serious traffic problems and automobile exhaust pollution problems in big cities, pedal-type electric vehicles are ideal as a small, medium-speed and short-distance daily transportation tool. They have unique development conditions and broad application prospects in China. Compared with other batteries, lithium-ion batteries have the advantages of light weight, small size, high average voltage, high energy density, high output power, high charging efficiency, no memory effect, long cycle life, wide operating temperature range, and low self-discharge, and have been widely used in the field of pedal-type electric two-wheeled vehicles.

[0003] However, due to the small size, light weight and easy portability of the batteries of pedal-type electric vehicles, they are easy to be stolen. Although there are anti-theft measures in the industry, they only locate the batteries and issue voice warnings, which cannot further prevent the theft by illegal thieves. Therefore, we propose a BMS monitoring system that can perform more comprehensive anti-theft monitoring and management of batteries to meet the needs of the market. Summary of the invention

[0004] The object of the present invention is to provide a portable battery pack BMS monitoring system and a monitoring method thereof to solve the problems raised in the background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a portable battery pack BMS monitoring system, comprising: The protective shell is fixedly attached to the top surface of the battery pack iron box shell, and the bottom of the protective shell is provided with a power supply plug adapted to the interface of the battery pack; A BMS control mainboard is disposed in the protective housing and connected to the battery pack through the power supply plug; A wireless positioning module is integrated on the BMS control mainboard and is used to periodically refresh the location information of the battery pack to the user's mobile terminal; the antenna positive pole vibrator of the wireless positioning module is provided with multiple and evenly arranged on the inner top surface of the protective shell, and the antenna negative pole vibrator is the iron box shell of the battery pack; A signal strength feedback module is integrated on the BMS control mainboard and synchronously detects the signal strength of the wireless positioning module according to the refresh time of the location information; An alarm module is integrated on the BMS control mainboard and is triggered by the wireless positioning module and the signal strength feedback module to generate an alarm message and send it to the user's mobile terminal; Wherein, the alarm module includes a voice alarm unit and a smoke release warning unit.

[0006] The portable battery pack BMS monitoring system of the present invention, wherein the position information includes conventional position information corresponding to the unchanged position of the battery pack, and illegal position information corresponding to the illegal movement of the battery pack; The alarm information includes early warning signals and alarm signals; The wireless positioning module and the signal strength feedback module trigger the alarm module specifically including: When the illegal location information is detected, the wireless positioning module triggers the alarm module to generate the warning signal and send it to the user's mobile terminal for warning; When it is detected that the signal strength is less than a set threshold, the signal strength feedback module triggers the alarm module to issue a voice warning and a smoke release warning, and generates an alarm signal to be sent to the user's mobile terminal for alarm.

[0007] The portable battery pack BMS monitoring system described in the present invention further includes a U-shaped handle, and the two arms of the U-shaped handle are longitudinally rotationally connected to the protective shell through two rotating components.

[0008] The portable battery pack BMS monitoring system described in the present invention, wherein the rotating assembly includes a rotating shaft vertically connected to the arm of the U-shaped handle, and a rotating seat for the rotating shaft to rotate along a fixed axis; a magnetic strip perpendicular to the plane where the two arms of the U-shaped handle are located is radially embedded in the rotating shaft, and a magnetic plate and a receiving groove adapted to the magnetic plate are provided on the bottom surface of the protective shell below the magnetic strip, and the depth of the receiving groove is greater than the thickness of the magnetic plate; when assembled in place, the lower part of the rotating shaft is flush with the upper end opening of the receiving groove, and the magnetic strip is in a vertical state and is attracted to the magnetic plate.

[0009] The portable battery pack BMS monitoring system described in the present invention, wherein the magnetic attraction plate is an iron sheet; the portable battery pack BMS monitoring system also includes a closed trigger module that triggers the alarm module, and the two trigger terminals of the closed trigger module are respectively arranged on the bottom surface of the accommodating groove. In the initial state, the magnetic attraction plate is separated from the two trigger terminals and is attracted to the magnetic strip. In the triggered state, the magnetic strip rotates and is separated from the magnetic attraction plate, and the magnetic attraction plate conducts the two trigger terminals.

[0010] The portable battery pack BMS monitoring system described in the present invention, wherein a plurality of magnetic field detection elements are provided on the rotating seat along the circumferential direction of the rotating axis, and the magnetic field detection elements are used to trigger the alarm module to generate an alarm signal and send it to the user's mobile terminal to alarm according to the number of times they are triggered.

[0011] The portable battery pack BMS monitoring system described in the present invention is characterized in that the rotating seat is detachably arranged on the bottom surface of the protective shell, a clamping seat is provided on the inner top surface of the protective shell and is pressed downward against the rotating seat, a concave cavity is provided on the lower end surface of the clamping seat, and the smoke release warning unit is arranged in the concave cavity.

[0012] The portable battery pack BMS monitoring system described in the present invention, wherein the protective shell includes a bottom plate and a protective cover arranged on the bottom plate; the BMS control mainboard is arranged on the bottom plate, and an annular cofferdam is arranged on the inner top surface of the protective cover surrounding the BMS control mainboard. When assembled in place, the lower end of the annular cofferdam is sealed and fitted with the upper surface of the bottom plate, and the rotating shaft is located on the outside of the annular cofferdam.

[0013] The portable battery pack BMS monitoring system of the present invention is characterized in that a release port for releasing smoke is provided on a side wall of the concave cavity away from the annular cofferdam.

[0014] To achieve the above object, the present invention also provides the following technical solution: a monitoring method of a portable battery pack BMS monitoring system, the method comprising the following steps: Step 1: Refresh the current position of the battery pack within a first preset time by the wireless positioning module, and send the refreshed position information to the user mobile terminal, wherein the position information includes regular position information and illegal position information; Step 2: Warning the user based on the illegal location information; Step 3: According to step 2, the real-time signal strength of the wireless positioning module is detected by the signal strength feedback module. If the real-time signal strength is less than the first preset signal strength, the voice alarm unit of the alarm module is triggered to perform a voice alarm warning; Step 4: cyclically detecting the real-time signal strength within a second preset time, if the real-time signal strength is less than the second preset signal strength, triggering the smoke release warning unit of the alarm module to issue a smoke release warning, wherein the value of the second preset signal strength is less than the value of the first preset signal strength.

[0015] Compared with the prior art, the present invention has the following beneficial effects: When the battery pack is illegally moved, it can warn the user to remind the user that the battery pack is at risk of being stolen. Moreover, since the positive antenna vibrators of the positioning module are evenly arranged on the inner top surface of the protective shell, when the protective shell is illegally and violently damaged, the effective area of ​​the positive antenna vibrators will be reduced, thereby causing the signal strength to weaken. At this time, if the signal strength continues to weaken, the alarm module will be further triggered. The smoke release warning unit of the alarm module releases smoke to simulate the spontaneous combustion of the battery when it is violently disassembled, so that the thief believes that the battery has been damaged due to spontaneous combustion caused by violent disassembly and has no theft value, thereby terminating the theft. In addition, during the smoke release warning process, the voice alarm unit can also broadcast the corresponding prompt tone, further strengthening the thief's psychological feeling of giving up theft and making him leave the battery pack faster. In addition, through the dual confirmation operation of warning and alarm, the frequency of false alarms caused by the position drift of the positioning signal can be greatly reduced, reducing the user's risk confirmation trouble and psychological pressure, and greatly improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the structure of the portable battery pack BMS monitoring system of the present invention.

[0018] Figure 2 for Figure 1 Explosion state diagram.

[0019] Figure 3 This is a bottom view of the protective cover of the portable battery pack BMS monitoring system of the present invention.

[0020] Figure 4 This is a bottom view of the protective cover of the portable battery pack BMS monitoring system of the present invention.

[0021] Figure 5 This is a bottom view of the bottom plate of the portable battery pack BMS monitoring system of the present invention.

[0022] Figure 6 It is a longitudinal cross-sectional view of the portable battery pack BMS monitoring system of the present invention in the left and right directions.

[0023] Figure 7 for Figure 6 Structural diagram of the middle handle rotated to a vertical position.

[0024] Figure 8 The control system structure schematic diagram of the portable battery pack BMS monitoring system of the present invention. DETAILED DESCRIPTION

[0025] The terms "first", "second", "third" and "fourth" etc. in the specification and claims of the present invention and the drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units that are inherent to these processes, methods, products or devices.

[0026] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0027] "Multiple" means two or more. "And / or" describes the relationship between related 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 related objects are in an "or" relationship.

[0028] Moreover, the terms "up, down, left, right, upper end, lower end, longitudinal" and the like indicating directions are all based on the posture and position of the device or equipment described in this solution during normal use.

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the following will be described clearly and completely in combination with the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are partial embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of the present invention.

[0030] This embodiment discloses Figures 1 to 8 The portable battery pack BMS monitoring system shown can be applied to high-end smart electric vehicles, food delivery platform lithium battery management, shared electric vehicles and other industry applications.

[0031] The system includes a protective shell 10, which is fitted and fixed on the top surface of the iron box shell 500 of the battery pack. The protective shell 10 is generally fixed to the iron box shell 500 of the battery pack by four first bolts 20 at the four corners of its bottom; further, a power supply plug 30 adapted to the interface of the battery pack is provided at the bottom of the protective shell 10, so that the battery can be electrically connected to the internal control elements after assembly is completed, so as to realize the monitoring and control of various parameters.

[0032] Furthermore, the system also includes a BMS control mainboard 40, which is arranged on the inner bottom surface of the protective shell 10 and connected to the battery pack through the power supply plug 30; the BMS control mainboard 40 specifically supports multiple communication modes of TTL / 485 / CAN, can be adapted to the MODBUS communication protocol of all BMS protection boards in the industry, can also monitor the voltage and current data of each string of battery cells in real time, and can also support real-time temperature monitoring. Once a high temperature warning is issued, the battery MOS charging and discharging can be controlled to be cut off.

[0033] Furthermore, the system also includes a wireless positioning module 50, which can support LTE CAT1 and is backward compatible with 2G to ensure that network blind spots are minimized as much as possible; the wireless positioning module 50 is specifically integrated on the BMS control mainboard 40, and of course can also be separately set on the inner top surface of the protective shell 10. The wireless positioning module 50 is used to periodically refresh the location information of the battery pack to the user's mobile terminal; the antenna positive pole vibrator 51 of the wireless positioning module 50 is provided with multiple and evenly arranged on the inner top surface of the protective shell, so as to form a trigger area in the vulnerable top area of ​​the protective shell 10, and the antenna negative pole vibrator of the wireless positioning module 50 is the iron box shell 500 of the battery pack. When the protective shell 10 is illegally and violently destroyed, the antenna positive pole vibrator 51 will also be destroyed, thereby reducing the effective radiation area of ​​the antenna of the wireless positioning module 50. The reduction in this area will lead to a weakening of the signal strength, and it can be indirectly known that the protective shell 10 is being illegally destroyed.

[0034] By forming a reference ground (i.e., negative pole) of the antenna positive pole 51 on the iron box shell 500 of the battery pack, the antenna positive pole 51 of the wireless positioning module 50 and the iron box form a dipole antenna, i.e., a low-frequency positioning module is formed, thereby ensuring the stability and penetration of the positioning signal; and in order to ensure concealment and compactness of the structure, the signal feeding point of the wireless positioning module 50 is connected to the first bolt 20 connected to the iron box shell 500 through a connecting wire; compared with the traditional high-frequency positioning module, the negative pole of the low-frequency antenna is made larger than the positive pole, which can ensure the stability of the signal radiation, enhance the penetration of the wireless positioning module 50, and ensure the accuracy of positioning in some narrow spaces and complex environments.

[0035] Furthermore, the system further includes a signal strength feedback module 60, which is integrated on the BMS control mainboard 40. The signal strength feedback module 60 synchronously detects the signal strength of the wireless positioning module 50 according to the refresh time of the position information, so as to feed back the detected real-time signal to the control system for comparison with the standard signal strength. Through the comparison result, for example, if the detected signal strength is suddenly less than the standard value, it can be known that the protective housing 10 is damaged, which is convenient for the next control operation; Furthermore, the system also includes an alarm module 70, which is integrated on the BMS control mainboard 40 and is triggered by the wireless positioning module 50 and the signal strength feedback module 60 to generate an alarm message and send it to the user mobile terminal 600; that is, the wireless positioning module 50 detects whether the position of the battery pack has changed, and when it has changed, the alarm module 70 is triggered to remind the user; in addition, if the position of the battery pack has not changed, since it is well known that traditional battery packs have a positioning function, some illegal thieves will violently destroy the BMS controller casing of the battery and destroy the controller to avoid alerting the user mobile terminal 600 when the battery pack position changes. However, the present solution evenly arranges the antenna positive pole oscillator 51 of the wireless positioning module 50 on the inner top wall of the protective shell 10, so that the alarm can be triggered when the protective shell 10 is damaged, thereby avoiding the illegal and violent disassembly theft and more effectively ensuring the property safety of the user.

[0036] As is known, the size of the radiation area of ​​the antenna is related to the signal strength. It is common knowledge in the technical field to know the damage of the effective area of ​​the antenna by detecting the change in the size of the signal strength before and after, and this solution will not be elaborated here.

[0037] Among them, the alarm module 70 includes a voice alarm unit 71 and a smoke release warning unit 72. The voice alarm unit 71 is used to broadcast local warning sounds. The broadcasting method can be offline voice broadcasting or online voice broadcasting, or a combination of online and offline methods; and the smoke release warning unit 72 is used to release smoke from the inside to the outside to simulate the spontaneous combustion of batteries to deter illegal dismantling personnel. In addition, the diffused smoke and the sound of the synchronous alarm can also attract the attention of passers-by around, further preventing theft.

[0038] In the actual alarm process, when the battery pack is illegally moved, the alarm module 70 cooperates with the wireless positioning module 50 to warn the user to remind the user that the battery pack is at risk of being stolen. Furthermore, since the positive antenna vibrator 51 of the positioning module is evenly arranged on the inner top surface of the protective shell 10, when the protective shell 10 is illegally and violently damaged, the effective area of ​​the positive antenna vibrator 51 will be reduced, thereby weakening the signal strength. At this time, if the signal strength continues to weaken, the alarm module 70 will be further triggered, and the smoke release warning unit 72 of the alarm module 70 will release smoke to simulate the spontaneous combustion of the battery when it is violently disassembled, so that the thief believes that the battery has been damaged due to the spontaneous combustion caused by violent disassembly and has no theft value, thereby terminating the theft. In addition, during the smoke release warning process, the voice alarm unit 71 can also broadcast the corresponding prompt tone to further strengthen the thief's psychological feeling of giving up theft and make him leave the battery pack faster. Through the double confirmation operation of warning and alarm, the frequency of false alarms caused by the position drift of the positioning signal can be greatly reduced, reducing the user's risk confirmation trouble and psychological pressure, and greatly improving the user experience.

[0039] As for the release of the alarm state, the user mobile terminal 600 that is connected to the BMS control mainboard 40 can be used to authorize the release of the control to facilitate the user's maintenance and other operations. An APP / applet can also be provided on the user mobile terminal 40 to quickly view the battery SOC remaining power, cruising range and other information, and overcharge and over-discharge alarms.

[0040] Among them, the smoke generation method of the smoke release warning unit 72 can be generated by chemical reaction or by heating a special atomizer. For the former, the specific trigger structure can be opened by the partition of two adjacent isolation chambers through a motor drive structure to allow the two chemical solutions to mix and generate smoke, or it can be achieved through other structures with similar principles. This is easy for technical personnel with this skill to think of, and this solution will not be elaborated here; for the latter, a small electronic smoke generator can be directly purchased on the market and used directly, and a more suitable one among many products can be selected, and this solution will not be elaborated here.

[0041] In this embodiment, the location information includes regular location information corresponding to the unchanged position of the battery pack, and illegal location information corresponding to the illegal movement of the battery pack. When the user mobile terminal 600 receives the illegal location information, it can be known that the battery pack has been illegally moved. At this time, the traditional emergency measure can only be for the user to go to the scene to confirm the battery pack situation, but the user experience of this method is poor. When the positioning signal drifts, it may also trigger a false alarm. At this time, if the user is still reminded to go to the scene to confirm but finds that no theft has occurred, the user experience will be greatly reduced, causing unnecessary trouble to the user.

[0042] The alarm information includes a warning signal and an alarm signal; and the steps of the wireless positioning module 50 and the signal strength feedback module 60 triggering the alarm module 70 specifically include: When illegal location information is detected, the wireless positioning module 50 triggers the alarm module 70 to generate an early warning signal and sends it to the user mobile terminal 600 for early warning, giving the user a first reminder; When the signal strength is further detected to be less than the set threshold value based on the first reminder, the signal strength feedback module 60 triggers the alarm module 70 to issue a voice warning and a smoke release warning, and generates an alarm signal to send to the user mobile terminal 600 to give a second reminder to the user; That is to say, the early warning information is used to remind the user that the battery pack is at risk of being stolen at the current time. Due to the existence of position signal drift, the first reminder at this time still needs further procedures to be determined. By determining whether the alarm signal appears in the next step, it can be finally determined whether a real theft has occurred, and the position drift can be excluded. That is, when the protective shell 10 is damaged, the antenna positive pole oscillator 51 of the wireless positioning module 50 is also damaged, resulting in a decrease in signal strength, and then the existence of the destructive behavior is known.

[0043] In order to avoid the occurrence of false alarm triggering due to signal fluctuations, the degree of signal weakening can be repeatedly detected within a certain period of time. If the signal strength continues to weaken, it can be determined that theft has occurred. If the signal strength fluctuates only in a short period of time, there is no need to alarm. The corresponding detection time can be set according to actual conditions. Under normal circumstances, the fluctuation of signal strength is as short as less than one second and as long as one to two seconds. During this time period, the theft of illegal thieves cannot be completed. Therefore, based on this logic, the fluctuation of signal strength can be eliminated by setting a cyclic detection time period, which can further improve the accuracy of the alarm.

[0044] In this embodiment, the portable battery pack BMS monitoring system of this embodiment also includes a U-shaped handle 80, and the two arms 81 of the U-shaped handle 80 are respectively connected to the protective shell 10 for longitudinal rotation through two rotating components 90 to facilitate the user's daily carrying and movement; further, the rotating component 90 includes two rotating shafts 91 respectively connected vertically to the two arms 81 of the U-shaped handle 80, and a rotating seat 92 for the rotating shaft 91 to rotate around the axis; the rotating seat 92 is specifically in the shape of a long strip and its two ends are respectively fixed to the bottom surface of the protective shell 10 by two first bolts 20 at one end of the protective shell 10, and an upward adaptation groove 920 is provided in the middle of the lower surface of the rotating seat 92 corresponding to the rotating shaft 91. After assembly, the inner wall of the adaptation groove 920 is in contact with the upper side wall of the rotating shaft 91 and the rotating shaft 91 is restricted downward on the bottom surface of the protective shell 10.

[0045] In order to prevent the rotating shaft 91 from axially moving, an annular groove 910 adapted to the rotating seat 92 is coaxially provided on the circumferential side wall of the rotating shaft 91. After assembly, the rotating seat 92 is stuck in the annular groove 910, and the rotating shaft 91 can be positioned in the axial left and right directions, so that the rotation can be stably performed in place. A fixed-axis rotation movement.

[0046] A magnetic strip 100 is further radially embedded in the inner surface of the rotating shaft 91 and is perpendicular to the plane where the two arms 81 of the U-shaped handle 80 are located. The edges at both ends of the magnetic strip 100 are flush with the peripheral side walls of the rotating shaft 91. A magnetic plate 110 and a receiving groove 120 adapted to the magnetic plate 110 are provided on the bottom surface of the protective shell 10 and below the magnetic strip 100. Through the adsorption and cooperation of the magnetic plate 110 and the magnetic strip 100, a damping force can be provided for the rotation of the rotating shaft 91 to prevent the handle from shaking up and down and colliding and wearing against the protective shell 10 when not in use.

[0047] Specifically, the depth of the receiving groove 120 is greater than the thickness of the magnetic plate 110, and the magnetic plate 110 is specifically rectangular; when assembled in place, that is, in a stationary state without moving the battery pack, the battery pack is generally stationary in the battery box of the electric vehicle. In this state, the lower part of the rotating shaft 91 is flush with the upper end opening of the receiving groove 120 and the magnetic strip 100 is in a vertical state and attracted to the magnetic plate 110, so as to ensure that the magnetic plate 110 is still located in the receiving groove 120 when it is adsorbed and moved upward into place, so as to prevent the magnetic plate 110 from moving out of the receiving groove 120 due to vibration.

[0048] Furthermore, in order to limit the positions of the two ends of the magnetic plate 110 when it moves upward to its position, downwardly extending protrusions 921 are provided on the left and right sides of the adaptation groove 920 on the bottom surface of the rotating seat 92. The lower end surface of the protrusion 921 is a horizontal plane and is flush with the bottom surface of the protective shell 10. After assembly, the two protrusions 921 are respectively located directly above the two ends of the magnetic plate 110.

[0049] In this embodiment, the magnetic plate 110 and the rotating seat 92 are both made of iron sheets to ensure the tensile strength of the rotating seat 92, and the rotating shaft 91 and the U-shaped handle are integrally connected to ensure the strength of the structure.

[0050] Furthermore, the portable battery pack BMS monitoring system of the present embodiment further includes a closed trigger module 130 for triggering the alarm module 70, and the closed trigger module 130 can be specifically integrated on the BMS control mainboard 40; wherein the two trigger terminals 131 of the closed trigger module 130 are respectively extended and arranged on the bottom surface of the receiving groove 120, and in the initial state, the magnetic suction plate 110 is separated from the two trigger terminals 131 and is attracted to the magnetic strip 100, and in the triggered state, the magnetic strip 100 rotates and is separated from the magnetic suction plate 110, and the magnetic suction plate 110 falls back to the bottom surface of the receiving groove 120 due to the loss of the upward suction force, thereby the two trigger terminals 131 are attracted to the magnetic strip 100, and the magnetic suction plate 110 is ... 1 is turned on, thereby making the closing trigger module 130 send a trigger signal to the alarm module 70. By separating and connecting the magnetic plate 110 and the trigger terminal 131, the triggering alarm action can be bound to the behavior of the illegal thief who repeatedly rotates the handle due to the need for violent disassembly during the theft process. When the alarm module 70 detects that the closing trigger module 130 is repeatedly triggered for many times, it can be determined that the theft has occurred and is in progress, thereby assisting in confirming whether theft exists from a more comprehensive aspect, so as to improve the recognition accuracy of the system. Among them, the triggering number threshold of the closing trigger module 130 can be selected according to the actual situation.

[0051] Furthermore, a plurality of magnetic field detection elements 140 are provided on the rotating seat 92 along the circumferential direction of the rotating axis 91, specifically three of which are arranged and two of which are horizontally opposite to each other on the left and right, and the other is arranged on the top of the rotating seat 92 and directly above the rotating axis 91. The magnetic field detection element 140 is used to trigger the alarm module 70 to generate an alarm signal according to the number of times it is triggered and send it to the user mobile terminal 600 for alarm. By pre-setting the detection number threshold for the magnetic field detection element 140 to send an alarm to the alarm module 70, the occurrence of false triggering of the alarm caused by the failure of the magnetic attraction plate 110 to attract the magnetic strip 100 can be effectively avoided; the magnetic field detection element 140 generally selects a Hall sensor with a smaller size and higher precision.

[0052] In the present embodiment, the rotating seat 92 is detachably arranged on the bottom surface of the protective shell 10 by means of a first bolt 20, and a clamping seat 150 is provided on the inner top surface of the protective shell 10, which presses downward against the rotating seat 92, so as to further stabilize the rotating shaft 91; further, a concave cavity 151 is provided on the lower end surface of the clamping seat 150, and the smoke release warning unit 72 is arranged in the concave cavity 151, so as to make full use of the internal space of the protective shell 10, making the structure more compact, and also facilitating the smoke released by the smoke release warning unit 72 to be quickly released in the gap between the rotating shaft 91 and the protective shell 10, thereby enhancing the realism of the battery spontaneous combustion and smoking.

[0053] In this embodiment, the protective housing 10 includes a bottom plate 101 and a protective cover 102 disposed on the bottom plate 101; the bottom plate 101 is rectangular and is fixed to the top surface of the iron box housing 500 of the battery pack by four first bolts 20, and the protective cover 102 is connected and fixed to the bottom plate 101 by four second bolts 160 screwed upward on the lower surface of the bottom plate 101; wherein the BMS control main board 40 is disposed on the bottom plate 101, and the rotating seat 92 is fixed to the bottom plate 101 by the first bolts 20; and on the inner top surface of the protective cover 102, .... The plate 40 is provided with an annular cofferdam 1021. When assembled in place, the lower end of the annular cofferdam 1021 is sealed and fitted with the upper surface of the base plate 101; specifically, the rotating shaft 91, the smoke release warning unit 72, the first bolt 20 and the second bolt 160 are all located on the outside of the annular cofferdam 1021, and the antenna positive pole vibrator is located on the inside of the annular cofferdam. Through the cooperation of the annular cofferdam 1021 and the base plate 101, the BMS control mainboard 40 can be sealed to achieve the purpose of waterproofing, while also preventing smoke from entering the interior of the BMS control mainboard 40.

[0054] Furthermore, a release port 1511 for releasing smoke is provided on a side wall of the cavity 151 away from the annular cofferdam 1021 . When the smoke release warning unit 72 is triggered, the smoke is released into the external environment through the release port 1511 and the gap 170 between the rotating shaft 91 and the protective cover 102 .

[0055] The monitoring method of the portable battery pack BMS monitoring system of this embodiment is implemented in the following steps: Step 1: Refresh the current position of the battery pack through the wireless positioning module 50 within a first preset time, and send the refreshed position information to the user mobile terminal 600, wherein the position information includes regular position information and illegal position information, so that the user can preliminarily determine the situation of the battery pack according to the illegal position information, so as to prepare for emergency measures; Step 2: Warning the user based on the illegal location information to remind the user that the battery pack may be at risk of theft; Step 3: According to step 2, the real-time signal strength of the wireless positioning module 50 is detected by the signal strength feedback module 60. If the real-time signal strength is less than the first preset signal strength, the voice alarm unit 71 of the alarm module 70 is triggered to issue a voice alarm warning, thereby eliminating the situation such as positioning position drift in step 2; Step 4: cyclically detect the real-time signal strength within the second preset time. If the real-time signal strength is less than the second preset signal strength, the smoke release warning unit 72 of the alarm module 70 is triggered to perform a smoke release warning, wherein the value of the second preset signal strength is less than the value of the first preset signal strength, so as to achieve more accurate theft event identification and conduct the final battery spontaneous combustion simulation, thereby playing a better anti-theft warning role and immediately stopping the continued occurrence of theft.

[0056] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. A portable battery pack BMS monitoring system, characterized in that: include: The protective shell is fixedly attached to the top surface of the battery pack iron box shell, and the bottom of the protective shell is provided with a power supply plug adapted to the interface of the battery pack; A BMS control mainboard is disposed in the protective housing and connected to the battery pack through the power supply plug; A wireless positioning module is integrated on the BMS control mainboard and is used to periodically refresh the location information of the battery pack to the user's mobile terminal; the antenna positive pole vibrator of the wireless positioning module is provided with multiple and evenly arranged on the inner top surface of the protective shell, and the antenna negative pole vibrator is the iron box shell of the battery pack; A signal strength feedback module is integrated on the BMS control mainboard and synchronously detects the signal strength of the wireless positioning module according to the refresh time of the location information; An alarm module is integrated on the BMS control mainboard and is triggered by the wireless positioning module and the signal strength feedback module to generate an alarm message and send it to the user's mobile terminal; Wherein, the alarm module includes a voice alarm unit and a smoke release warning unit.

2. The portable battery pack BMS monitoring system according to claim 1, characterized in that: The position information includes regular position information corresponding to the unchanged position of the battery pack and illegal position information corresponding to the illegal movement of the battery pack; The alarm information includes early warning signals and alarm signals; The wireless positioning module and the signal strength feedback module trigger the alarm module specifically including: When the illegal location information is detected, the wireless positioning module triggers the alarm module to generate the warning signal and send it to the user's mobile terminal for warning; When it is detected that the signal strength is less than a set threshold, the signal strength feedback module triggers the alarm module to issue a voice warning and a smoke release warning, and generates an alarm signal to be sent to the user's mobile terminal for alarm.

3. The portable battery pack BMS monitoring system according to claim 2, characterized in that: The portable battery pack BMS monitoring system also includes a U-shaped handle, and two arms of the U-shaped handle are longitudinally rotatably connected to the protective shell through two rotating components.

4. The portable battery pack BMS monitoring system according to claim 3, characterized in that: The rotating assembly includes a rotating shaft vertically connected to the support arms of the U-shaped handle, and a rotating seat for the rotating shaft to rotate around the fixed axis; a magnetic strip perpendicular to the plane where the two arms of the U-shaped handle are located is radially embedded in the rotating shaft, and a magnetic plate and a receiving groove adapted to the magnetic plate are provided on the bottom surface of the protective shell below the magnetic strip, and the depth of the receiving groove is greater than the thickness of the magnetic plate; when assembled in place, the lower part of the rotating shaft is flush with the upper end opening of the receiving groove, and the magnetic strip is in a vertical state and is attracted to the magnetic plate.

5. The portable battery pack BMS monitoring system according to claim 4, characterized in that: The magnetic plate is an iron sheet; the portable battery pack BMS monitoring system also includes a closed trigger module that triggers the alarm module, and the two trigger terminals of the closed trigger module are respectively arranged on the bottom surface of the accommodating groove. In the initial state, the magnetic plate is separated from the two trigger terminals and is attracted to the magnetic strip. In the triggered state, the magnetic strip rotates and is separated from the magnetic plate, and the magnetic plate conducts the two trigger terminals.

6. The portable battery pack BMS monitoring system according to claim 5, characterized in that: A plurality of magnetic field detection elements are provided on the rotating seat along the circumferential direction of the rotating shaft. The magnetic field detection elements are used to trigger the alarm module to generate an alarm signal and send it to the user's mobile terminal for alarm according to the number of times they are triggered.

7. The portable battery pack BMS monitoring system according to claim 6, characterized in that: The rotating seat is detachably arranged on the bottom surface of the protective shell, and a pressing seat is arranged on the inner top surface of the protective shell, pressing downward against the rotating seat. A concave cavity is arranged on the lower end surface of the pressing seat, and the smoke release warning unit is arranged in the concave cavity.

8. The portable battery pack BMS monitoring system according to claim 7, characterized in that: The protective shell includes a bottom plate and a protective cover arranged on the bottom plate; the BMS control mainboard is arranged on the bottom plate, and an annular cofferdam is arranged on the inner top surface of the protective cover around the BMS control mainboard. When assembled in place, the lower end of the annular cofferdam is sealed and fitted with the upper surface of the bottom plate, and the rotating shaft is located on the outside of the annular cofferdam.

9. The portable battery pack BMS monitoring system according to claim 8, characterized in that: A release port for releasing smoke is arranged on a side wall of the concave cavity away from the annular cofferdam.

10. A monitoring method for a portable battery pack BMS monitoring system, applied to the portable battery pack BMS monitoring system according to any one of claims 1 to 9, characterized in that: The method comprises the following steps: Step 1: Refresh the current position of the battery pack within a first preset time by the wireless positioning module, and send the refreshed position information to the user mobile terminal, wherein the position information includes regular position information and illegal position information; Step 2: Warning the user based on the illegal location information; Step 3: According to step 2, the real-time signal strength of the wireless positioning module is detected by the signal strength feedback module. If the real-time signal strength is less than the first preset signal strength, the voice alarm unit of the alarm module is triggered to perform a voice alarm warning; Step 4: cyclically detecting the real-time signal strength within a second preset time, if the real-time signal strength is less than the second preset signal strength, triggering the smoke release warning unit of the alarm module to issue a smoke release warning, wherein the value of the second preset signal strength is less than the value of the first preset signal strength.

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