Method and System for Preventing Tampering of Battery Electrodes

Abstract

The present invention provides a method and system for preventing battery core tampering, which relates to the technical field of battery core anti-tampering. When the battery is shipped out, the present invention starts to detect the battery's shipping out signal, activation signal, and disconnection signal, and correspondingly records the corresponding flag bits. When the detected flag bits meet a certain sequence, the battery anti-core tampering function is started, and all outputs of the battery are turned off. At this time, only by returning the battery to the original factory and reprogramming can it be used normally, achieving the purpose of preventing battery core tampering.

Description

Technical Field

[0001] The present invention relates to the technical field of preventing cell tampering, and particularly relates to a method and system for preventing cell tampering in a battery. Background Art

[0002] The cell is the most core part of the entire battery pack, and the quality and adaptability during use of the cell largely affect the life and use safety of the battery pack. Therefore, generally speaking, the brand, quality, quantity, and related specifications of the cells in the battery pack are strictly controlled according to the actual use and cannot be changed arbitrarily. However, in real life, some customers, for certain purposes, will tamper with the original cells of the battery pack, and this means of privately changing the voltage and capacity of the battery pack will, at best, result in a mismatch between the battery capacity and the electric vehicle in use, a charging mismatch, and a mileage mismatch, and in severe cases, even cause the battery to catch fire during charging, posing a threat to people's lives and property safety.

[0003] To prevent the battery cells from being tampered with, some existing technologies install light sensors in the battery. Once the customer opens the battery and the light sensor receives light, the battery cannot be used; some install a switch between the battery case and the battery management system. When the customer privately disassembles the battery and triggers the switch, the battery cannot be used, and some also fill the entire battery pack with glue to achieve the effect of preventing cell tampering in the battery. Disadvantages: It brings inconvenience to maintenance or after-sales.

[0004] However, the above several technologies for preventing cell tampering in the battery are either easily cracked and have poor actual use effects, or make maintenance or after-sales extremely complicated and there are many inconveniences. Thus, it can be seen that there is currently no simple and effective technology for preventing battery cells from being tampered with in the existing technology. Summary of the Invention

[0005] (1) Technical Problems to be Solved

[0006] In view of the deficiencies of the existing technology, the present invention provides a method and system for preventing cell tampering in a battery, and solves the problem that the existing technology cannot prevent battery cells from being tampered with by a simple and effective method.

[0007] (2) Technical Solutions

[0008] To achieve the above object, the present invention is realized through the following technical solutions:

[0009] In a first aspect, the present invention first proposes a method for preventing cell tampering in a battery, and the method includes:

[0010] S1. Detect whether there is a battery outbound signal, and record the transportation mode flag bit when receiving the battery outbound signal;

[0011] S2. Detect whether there is a battery activation signal, and record the charging activation flag bit when the battery activation signal is detected;

[0012] S3. Detect whether there is a disconnection signal between the battery and the battery management system, and record the disconnection flag bit when the disconnection signal is detected;

[0013] S4. When the transportation mode flag bit, the charging activation flag bit, and the disconnection flag bit are detected in sequence, start the battery anti-cell tampering function and turn off all outputs of the battery.

[0014] Preferably, the battery out-of-warehouse signal is: the battery management system receives an instruction for the battery to enter the low-power mode.

[0015] Preferably, use a memory to store the transportation mode flag bit, the charging activation flag bit, and the disconnection flag bit.

[0016] Preferably, the battery activation signal includes: a signal that the battery is inserted into the charger.

[0017] Preferably, the disconnection signal is: any one of the signal lines between the battery and the battery management system is disconnected.

[0018] In a second aspect, the present invention also proposes a system for preventing battery cell tampering, and the system includes:

[0019] A battery out-of-warehouse signal detection module, configured to detect whether there is a battery out-of-warehouse signal, and record the transportation mode flag bit when the battery out-of-warehouse signal is received;

[0020] A battery activation signal detection module, configured to detect whether there is a battery activation signal, and record the charging activation flag bit when the battery activation signal is detected;

[0021] A disconnection signal detection module, configured to detect whether there is a disconnection signal between the battery and the battery management system, and record the disconnection flag bit when the disconnection signal is detected;

[0022] An anti-cell tampering function activation module, configured to start the battery anti-cell tampering function and turn off all outputs of the battery when the transportation mode flag bit, the charging activation flag bit, and the disconnection flag bit are detected in sequence.

[0023] Preferably, the battery out-of-warehouse signal is: the battery management system receives an instruction for the battery to enter the low-power mode.

[0024] Preferably, use a memory to store the transportation mode flag bit, the charging activation flag bit, and the disconnection flag bit.

[0025] Preferably, the battery activation signal includes: a signal that the battery is inserted into the charger.

[0026] Preferably, the disconnection signal is that any signal line between the battery and the battery management system is disconnected.

[0027] (III) Beneficial effects

[0028] The present invention provides a method and system for preventing battery core tampering. Compared with the prior art, the following beneficial effects are achieved:

[0029] Since the battery pack is shipped out for transportation, the present invention sequentially detects the battery shipping signal, activation signal, and disconnection signal, and correspondingly records the transportation mode flag bit, charging activation flag bit, and disconnection flag bit. When the battery sequentially records the transportation mode flag bit, charging activation flag bit, and disconnection flag bit, the battery core anti-tampering function is started. After the anti-tampering function is started, all outputs of the battery are turned off, achieving the purpose of preventing the battery core from being tampered with. The method for preventing battery core tampering proposed by the present invention is, on the one hand, not easily cracked, has good actual application effects, avoids various mismatch problems caused by customers privately changing the battery core, and ensures the safety of people's lives and property; on the other hand, the subsequent processing operation of this method is simple, facilitating after-sales and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0031] Figure 1 It is a schematic diagram of an embodiment of a method for preventing battery core tampering according to the present invention;

[0032] Figure 2 It is a circuit block diagram of the battery management system BMS in the embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0034] By providing a method and system for preventing battery core tampering in the embodiments of the present application, the problem that the prior art cannot prevent the battery core from being tampered with by a simple and effective method is solved, and the purpose of preventing customers from privately changing the battery core is achieved.

[0035] The technical solutions in the embodiments of the present application to solve the above technical problems are generally as follows:

[0036] In order to prevent the battery cells from being tampered with by a simple and effective method, the present invention detects the battery's outbound signal, activation signal, and disconnection signal when the battery is shipped out of the warehouse, and correspondingly records the corresponding flag bits. When the detected flag bits meet a certain order, the battery anti-cell-tampering function is activated, and all outputs of the battery are turned off. At this time, only by returning the battery to the original factory and re-burning the program can it be used normally, achieving the function of preventing the battery cells from being tampered with.

[0037] In order to better understand the above technical solutions, the above technical solutions will be described in detail below in conjunction with the accompanying drawings of the specification and specific implementation manners.

[0038] Embodiment 1:

[0039] In the first aspect, the present invention first proposes a method for preventing battery cells from being tampered with. Refer to Figure 1 , the method includes:

[0040] S1. Detect whether there is a battery outbound signal, and record the transportation mode flag bit when receiving the battery outbound signal;

[0041] S2. Detect whether there is a battery activation signal, and record the charging activation flag bit when detecting the battery activation signal;

[0042] S3. Detect whether there is a disconnection signal between the battery and the battery management system, and record the disconnection flag bit when detecting the disconnection signal;

[0043] S4. When the transportation mode flag bit, the charging activation flag bit, and the disconnection flag bit are sequentially detected, activate the battery anti-cell-tampering function and turn off all outputs of the battery.

[0044] It can be seen that in this embodiment, starting from the outbound transportation of the battery pack, the battery outbound signal, activation signal, and disconnection signal are sequentially detected, and the transportation mode flag bit, charging activation flag bit, and disconnection flag bit are correspondingly recorded. When the battery sequentially records the transportation mode flag bit, charging activation flag bit, and disconnection flag bit, the battery anti-cell-tampering function is activated. After the anti-tampering function is activated, all outputs of the battery are turned off, achieving the purpose of preventing the battery cells from being tampered with. The method for preventing battery cells from being tampered with proposed by the present invention, on the one hand, is not easily cracked, has good practical application effects, avoids various mismatch problems caused by customers privately changing the battery cells, and ensures the safety of people's lives and property; on the other hand, the subsequent processing operations of this method are simple, facilitating after-sales service and maintenance.

[0045] The following combines the attached Figure 1-2, and the explanations of the specific steps S1 - S4 to elaborate on the implementation process of an embodiment of the present invention. A method for preventing battery core tampering in a battery proposed in this embodiment specifically includes the following steps:

[0046] S1. Detect whether there is a battery out - of - warehouse signal, and record a transportation mode flag bit when receiving the battery out - of - warehouse signal.

[0047] Before the battery pack is sold to the customer and starts transportation, an instruction is sent to the battery management system (BMS) of the battery pack through the APP or the instrument or the upper computer. When the BMS of the battery pack receives this instruction, it means that the battery has received the battery out - of - warehouse signal. When receiving this out - of - warehouse signal, a transportation mode flag bit is recorded in the memory, indicating that the battery pack enters the transportation mode, and the transportation mode is generally a low - power consumption mode. The memory can be selected as FLASH, eeprom, etc.

[0048] S2. Detect whether there is a battery activation signal, and record a charging activation flag bit when detecting the battery activation signal.

[0049] After the customer receives the battery pack, before starting to use it, the battery needs to be activated before it can be used. In actual operation, the action of inserting the charger into the battery is regarded as the battery activation action. When the charger is inserted into the battery, the BMS detects the battery activation signal, and at this time, a charging activation flag bit is recorded in the memory, indicating that the battery has been activated and can be used normally.

[0050] S3. Detect whether there is a disconnection signal between the battery and the battery management system, and record a disconnection flag bit when detecting the disconnection signal.

[0051] After the battery is activated, if the customer privately tampers with the battery core, the battery will activate the battery core tampering prevention function, resulting in the battery being unable to be used. Before the battery activates the core tampering prevention function, it is necessary to detect whether there is an act or action of privately tampering with the battery core. Specifically:

[0052] When the battery management system detects that any one of the signal lines between the battery and the BMS is disconnected from the BMS, it is determined that there is an action of privately tampering with the battery core, and at this time, a disconnection flag bit is recorded in the memory.

[0053] S4. When the transportation mode flag bit, the charging activation flag bit, and the disconnection flag bit are detected in sequence, activate the battery core tampering prevention function and turn off all outputs of the battery.

[0054] When it is detected that the battery sequentially records the transportation mode flag bit, the charging activation flag bit, and the disconnection flag bit, the battery will activate the battery anti-cell tampering function, and the battery will turn off all outputs, resulting in the battery being unusable, thus realizing the function of battery anti-cell tampering.

[0055] At the same time, due to the disconnection of the signal line, the BMS of the battery will also be unable to continue to be used, thus playing a role in preventing the battery BMS from being tampered with.

[0056] In addition, when the battery turns off all outputs, the communication function of the battery is still retained, such as retaining communications such as 485 and CAN. When it is necessary to restore the normal use of the battery, the battery can be returned to the original factory or the after-sales point, and the battery pack is reprogrammed (the BMS is reprogrammed), so that the BMS can resume normal operation and the battery can work normally.

[0057] In addition, in order to enable the MCU in the BMS to still work normally when the peripheral circuit is powered off, a button battery can be added to the BMS to maintain the data storage of the MCU chip when the MCU peripheral circuit is powered off.

[0058] Embodiment 2:

[0059] In a second aspect, the present invention also provides a system for preventing battery cell tampering, the system comprising:

[0060] A battery out-of-warehouse signal detection module, configured to detect whether there is a battery out-of-warehouse signal, and record a transportation mode flag bit when receiving the battery out-of-warehouse signal;

[0061] A battery activation signal detection module, configured to detect whether there is a battery activation signal, and record a charging activation flag bit when detecting the battery activation signal;

[0062] A disconnection signal detection module, configured to detect whether there is a disconnection signal between the battery and the battery management system, and record a disconnection flag bit when detecting the disconnection signal;

[0063] An anti-cell tampering function activation module, configured to activate the battery anti-cell tampering function and turn off all outputs of the battery when sequentially detecting the transportation mode flag bit, the charging activation flag bit, and the disconnection flag bit.

[0064] Optionally, the battery out-of-warehouse signal is: the battery management system receives an instruction for the battery to enter the low power consumption mode.

[0065] Optionally, the transportation mode flag bit, the charging activation flag bit, and the disconnection flag bit are stored by using a memory.

[0066] Optionally, the battery activation signal includes: a signal that the battery is inserted into the charger.

[0067] Optionally, the disconnection signal is that any one of the signal lines between the battery and the battery management system is disconnected.

[0068] It can be understood that the battery anti-cell tampering system provided by the embodiments of the present invention corresponds to the above-mentioned battery anti-cell tampering method. For the explanations, examples, beneficial effects, etc. of the relevant content, reference can be made to the corresponding content in the battery anti-cell tampering method, which will not be elaborated here.

[0069] In summary, compared with the prior art, the present invention has the following beneficial effects:

[0070] 1. Since the battery pack is shipped out for transportation, the battery out-of-warehouse signal, activation signal, and disconnection signal are detected in sequence, and the transportation mode flag bit, charging activation flag bit, and disconnection flag bit are recorded correspondingly. When the battery records the transportation mode flag bit, charging activation flag bit, and disconnection flag bit in sequence, the battery anti-cell tampering function is started. After the anti-tampering function is started, all outputs of the battery are turned off, achieving the purpose of preventing the battery cells from being tampered with. The battery anti-cell tampering method proposed by the present invention, on the one hand, is not easily cracked, has good practical application effects, avoids various mismatch problems caused by customers privately changing the battery cells, and ensures the safety of people's lives and property; on the other hand, the subsequent processing operations of this method are simple, facilitating after-sales and maintenance.

[0071] 2. The present invention uses the signal when any one of the signal lines between the battery and the BMS is disconnected as the disconnection signal, and records the disconnection flag bit and starts the anti-tampering function when the disconnection signal is detected. This method can not only prevent the battery cells from being tampered with, but also prevent the BMS from being tampered with.

[0072] It should be noted that in this article, 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 terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including 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 "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the element.

[0073] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A method for preventing core tampering of a battery, characterized in that, The method includes: S1. Detect whether there is a battery out-of-warehouse signal, and record the transportation mode flag bit when receiving the battery out-of-warehouse signal, where the battery out-of-warehouse signal is: the battery management system receives an instruction for the battery to enter the low-power mode; S2. Detect whether there is a battery activation signal, and record the charging activation flag bit when detecting the battery activation signal, where the battery activation signal includes: a signal that the battery is inserted into the charger; S3. Detect whether there is a disconnection signal between the battery and the battery management system, and record the disconnection flag bit when detecting the disconnection signal, where the disconnection signal is: any one signal line between the battery and the battery management system is disconnected; S4. When the transportation mode flag bit, the charging activation flag bit, and the disconnection flag bit are sequentially detected, start the battery anti-cell tampering function and turn off all outputs of the battery.

2. The method according to claim 1, characterized in that, Use a memory to store the transportation mode flag bit, the charging activation flag bit, and the disconnection flag bit.

3. A system for preventing cell tampering of a battery, characterized in that, The system includes: A battery out-of-warehouse signal detection module, configured to detect whether there is a battery out-of-warehouse signal, and record the transportation mode flag bit when receiving the battery out-of-warehouse signal, where the battery out-of-warehouse signal is: the battery management system receives an instruction for the battery to enter the low-power mode; A battery activation signal detection module, configured to detect whether there is a battery activation signal, and record the charging activation flag bit when detecting the battery activation signal, where the battery activation signal includes: a signal that the battery is inserted into the charger; A disconnection signal detection module, configured to detect whether there is a disconnection signal between the battery and the battery management system, and record the disconnection flag bit when detecting the disconnection signal, where the disconnection signal is: any one signal line between the battery and the battery management system is disconnected; An anti-cell tampering function activation module, configured to start the battery anti-cell tampering function and turn off all outputs of the battery when the transportation mode flag bit, the charging activation flag bit, and the disconnection flag bit are sequentially detected.

4. The system according to claim 3, characterized in that, Use a memory to store the transportation mode flag bit, the charging activation flag bit, and the disconnection flag bit.

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