A battery theft prevention control system and method

Abstract

The application discloses a battery anti-theft control system and method, and relates to the field of battery anti-theft control, which can realize new energy light truck battery anti-theft. The system comprises a power battery system, a high-voltage distribution box, a vehicle controller, a vehicle remote terminal and an anti-theft alarm. The power battery system comprises a power battery, a battery management system and an anti-theft controller. The high-voltage distribution box is used for vehicle high-voltage interlocking detection. The anti-theft controller is used for battery pack interlocking detection when the vehicle high-voltage interlocking detection result is normal, and the anti-theft controller activates the vehicle controller and the anti-theft alarm to give an alarm when the battery pack interlocking detection is abnormal. The anti-theft controller has a positioning function to report the battery position to the vehicle remote terminal in real time. The vehicle remote terminal is used for sending the vehicle high-voltage and battery pack interlocking abnormal information and the battery position information to the vehicle owner. The battery anti-theft control system and method can quickly find the lost battery position through power battery early warning and battery pack short-time positioning technology, recover the property loss, and realize new energy light truck battery anti-theft.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of automobile anti-theft technology, and particularly relates to a battery anti-theft control system and method. BACKGROUND

[0002] The power battery of a new energy vehicle is a core functional component of the vehicle, and has a high value itself, accounting for 40%-50% of the value of the vehicle. In recent years, with the dramatic increase in the cost of battery raw materials, the price of the battery package has increased at a high rate. A new energy pure electric logistics light truck has unique structural characteristics, and the assembly and fixing structure of the power battery is similar. The same battery package provided by a standard battery factory can be directly used for the same type of vehicle of different brands of vehicles of different vehicle manufacturers, and the battery package has a certain interchangeability. The above reasons result in the risk of theft and resale of the power battery package, and there is currently no mature anti-theft solution.

[0003] Therefore, there is an urgent need for a battery anti-theft control system and method. SUMMARY

[0004] The present application relates to the field of automobile anti-theft technology, and particularly relates to a battery anti-theft control system and method.

[0005] The present application provides a battery anti-theft control system, comprising: a power battery system, a high-voltage distribution box, a vehicle controller, a vehicle remote terminal and an anti-theft alarm, the power battery system comprising a power battery, a battery management system and an anti-theft controller, the anti-theft controller being connected with the vehicle controller and the anti-theft alarm, wherein the power battery is connected with the high-voltage distribution box through a battery bus, the high-voltage distribution box is divided into a plurality of high-voltage loops, each high-voltage loop is connected with a high-voltage device, and a high-voltage interlock connector is arranged in each high-voltage loop, the high-voltage distribution box is used for distributing high voltage of the vehicle among the high-voltage loops and detecting high-voltage interlocking of the vehicle for the high-voltage interlock connectors corresponding to the high-voltage loops; the high-voltage distribution box is connected with the anti-theft controller, the high-voltage distribution box is further used for sending the high-voltage interlocking detection result of the vehicle to the anti-theft controller, the anti-theft controller is used for detecting battery package interlocking when the high-voltage interlocking detection result of the vehicle is normal, and sending vehicle high-voltage interlocking abnormal information to the vehicle controller and the anti-theft alarm when the battery package interlocking is abnormal, so as to activate the vehicle controller and the anti-theft alarm to alarm, the vehicle controller is used for controlling a buzzer of an instrument panel to sound and sending the vehicle high-voltage interlocking abnormal information to the vehicle remote terminal; the anti-theft controller has a positioning function to report the position of the battery to the vehicle remote terminal in real time; and the vehicle remote terminal is used for sending the high-voltage interlocking abnormal information of the vehicle and / or the battery package interlocking abnormal information and / or the battery position information to the vehicle owner.

[0006] The battery anti-theft control system as described above, wherein preferably, the anti-theft controller is externally connected with an antenna receiver, and the antenna receiver is attached to the shell of the power battery system to realize GPS positioning function; the anti-theft controller accesses the vehicle CAN network to receive the high-voltage detection state of the vehicle end reported by the high-voltage distribution box through a preset ID; the battery management system, the vehicle controller and the vehicle remote terminal also access the vehicle CAN network.

[0007] The battery anti-theft control system as described above, wherein preferably, the power battery comprises a battery high-voltage main positive loop and a battery high-voltage main negative loop, a battery high-voltage output socket is arranged between the output ends of the battery high-voltage main positive loop and the battery high-voltage main negative loop, a main positive relay and a maintenance switch socket are arranged on the battery high-voltage main positive loop, a pre-charging resistor and a pre-charging relay are connected in series with each other and are connected in parallel across the main positive relay, a current sensor and a main negative relay are arranged on the battery high-voltage main negative loop, the current sensor is used to collect the battery external discharge current value in real time, and the battery remaining capacity is calculated according to the battery external discharge current value; an insulation detection module is arranged across the battery high-voltage main positive loop and the battery high-voltage main negative loop to detect the insulation value of the battery high-voltage main positive loop and / or the battery high-voltage main negative loop to ground, the insulation detection module is connected with the battery management system to report the insulation detection result to the battery management system, and the battery management system is also used to report the insulation detection result to the vehicle controller through the CAN network.

[0008] The battery anti-theft control system as described above, wherein preferably, the battery management system is connected with the main positive relay, the main negative relay and the pre-charging relay through driving control lines respectively to control the working of the main positive relay, the main negative relay and the pre-charging relay and to be responsible for the power-on and power-off of the vehicle; the battery management system is specifically used to: first close the main negative relay and the pre-charging relay, pre-charge the motor drive controller in the high-voltage distribution box, control the main positive relay to be closed when the pre-charging voltage reaches the preset amplitude range of the battery pack voltage, and cut off the pre-charging relay after a delay of a preset time to keep the vehicle in a high-voltage output state.

[0009] The battery anti-theft control system as described above, wherein preferably, the maintenance switch socket is connected with an interlocking connection line connected with the anti-theft controller, and the battery high-voltage output socket is connected with two interlocking connection lines, one of which is connected with the anti-theft controller, and the other of which is connected with the maintenance switch socket through a high-voltage socket interlocking signal line.

[0010] The battery anti-theft control system as described above, preferably, the high-voltage device comprises at least one of a motor drive controller, a fast charging circuit, an air conditioner electric compressor, a passenger cabin heater, a low-voltage power supply circuit, a water heating circuit, an upper-mounted circuit and a slow charging circuit.

[0011] The battery anti-theft control system as described above, preferably, the working voltage of the anti-theft controller is 24V, the power supply source of the anti-theft controller is a BMS constant power or a power battery, when the lead-acid battery of the whole vehicle is in a normal state, the battery management system and the anti-theft controller are powered by the lead-acid battery of the whole vehicle, when the lead-acid battery of the whole vehicle is in a fault state, the anti-theft controller directly takes power from 8 strings of power batteries close to the anti-theft controller in the power battery, and when the anti-theft controller is powered by the power battery, the power supply time of the power battery is less than or equal to 6h.

[0012] The battery anti-theft control system as described above, preferably, the activation signal interface of the high-voltage distribution box, the battery management system and the anti-theft controller is connected with a vehicle end main relay, the whole vehicle controller is used for controlling the vehicle end main relay to be attracted or disconnected in response to a key opening signal or a key closing signal, so that the high-voltage distribution box, the battery management system and the anti-theft controller are powered on or powered off, and the anti-theft alarm automatically shields the alarm state when identifying that the vehicle key is located in the vehicle, and only prompts the vehicle high-voltage interlocking abnormality, the whole vehicle controller controls the vehicle to be powered off and cannot be driven.

[0013] The application also provides a battery anti-theft control method using the above system, comprising:

[0014] The whole vehicle high-voltage interlocking detection is performed through the high-voltage distribution box, the battery pack interlocking detection is performed through the anti-theft controller, when the whole vehicle high-voltage interlocking detection result and the battery pack interlocking detection result are both normal, the vehicle is controlled to complete high-voltage turning on;

[0015] After power-off, the anti-theft controller enters a low-power consumption mode, works by using the constant power of the lead-acid battery, detects the battery pack interlocking signal in real time, and sends the battery pack interlocking detection result to the anti-theft controller;

[0016] When the battery pack interlocking detection result is abnormal, the anti-theft controller sends the battery pack interlocking abnormality information to the whole vehicle controller and the anti-theft alarm, so that the whole vehicle controller and the anti-theft alarm are activated to alarm;

[0017] After power-on, power-off and battery theft, the anti-theft controller sends the battery position information to the vehicle owner through the whole vehicle remote terminal.

[0018] The battery anti-theft control method as described above, wherein preferably, the high-voltage interlocking detection of the whole vehicle is performed by the high-voltage distribution box, the battery pack interlocking detection is performed by the anti-theft controller, and when the high-voltage interlocking detection result and the battery pack interlocking detection result are both normal, the vehicle is controlled to complete the high-voltage, specifically including:

[0019] When the lead-acid battery of the whole vehicle is in a normal state, after the key is turned on, the vehicle controller controls the vehicle end main relay to be attracted, the high-voltage distribution box, the battery management system and the anti-theft controller connected to the corresponding active signal interface of the vehicle end main relay are powered on, and enter the working state. After being powered on, the interlocking signal of the high-voltage interlocking connector corresponding to each high-voltage loop of the high-voltage distribution box, if normal, reports to the whole vehicle CAN network that the high-voltage interlocking signal detection of the vehicle end is normal. The anti-theft controller receives the whole vehicle end high-voltage interlocking normal signal from the CAN network through the preset ID, and the anti-theft controller detects the interlocking normal signal of the battery high-voltage output socket and the maintenance switch socket of the battery pack, reports to the whole vehicle CAN network that the battery pack high-voltage interlocking signal is normal, and the vehicle controller receives the battery pack high-voltage interlocking signal normal signal from the CAN network, controls the vehicle to complete the high-voltage, and the vehicle is in a drivable state,

[0020] After being powered off, the anti-theft controller enters the low-power mode, works by using the constant power of the lead-acid battery, detects the battery pack interlocking signal in real time, and sends the battery pack interlocking detection result to the anti-theft controller, specifically including:

[0021] When the lead-acid battery of the whole vehicle is in a normal state, after the key is turned off, the vehicle controller controls the vehicle end main relay to be disconnected, the high-voltage distribution box, the battery management system and the anti-theft controller connected to the corresponding active signal interface of the vehicle end main relay are powered off, at this time, the anti-theft controller enters the low-power mode, works by using the constant power of the lead-acid battery, detects the interlocking signal of the battery high-voltage output socket and the maintenance switch socket of the battery pack in real time, and reports the battery pack interlocking detection result to the whole vehicle CAN network. The anti-theft controller receives the battery pack interlocking detection result from the whole vehicle CAN network,

[0022] When the battery pack interlocking detection result is abnormal, the anti-theft controller sends the battery pack interlocking abnormal information to the vehicle controller and the anti-theft alarm to activate the vehicle controller and the anti-theft alarm to alarm, specifically including:

[0023] When the key is in the off state, the anti-theft controller detects abnormal interlocking signals of the battery high-voltage output socket and the maintenance switch socket of the battery pack, outputs a 24V high-level signal to the CAN network, and the vehicle controller and the anti-theft alarm enter the active state from the sleep state after receiving the 24V high-level signal from the CAN network. At this time, the anti-theft alarm performs a warning alarm, the vehicle controller controls the buzzer of the instrument panel to sound, and the vehicle controller sends the battery pack interlocking abnormal information to the CAN network. The vehicle remote terminal receives the vehicle high-voltage interlocking abnormal information from the CAN network and sends the vehicle high-voltage interlocking abnormal information to the owner's mobile terminal.

[0024] After the battery is stolen, the anti-theft controller's interface with the lead-acid storage battery power supply line is cut off, and the anti-theft controller automatically switches to directly take power from the 8 strings of power batteries near the anti-theft controller in the power battery. The anti-theft controller detects abnormal interlocking signals of the battery high-voltage output socket and the maintenance switch socket of the battery pack, outputs a 24V high-level signal to the CAN network, and the vehicle controller and the anti-theft alarm enter the active state from the sleep state after receiving the 24V high-level signal from the CAN network. At this time, the anti-theft alarm performs a warning alarm, the vehicle controller controls the buzzer of the instrument panel to sound, and the vehicle controller sends the battery pack interlocking abnormal information to the CAN network. The vehicle remote terminal receives the vehicle high-voltage interlocking abnormal information from the CAN network and sends the vehicle high-voltage interlocking abnormal information to the owner's mobile terminal. At this time, the battery position information is periodically sent to the user's mobile terminal through the vehicle remote terminal within 6 hours after being stolen.

[0025] When the anti-theft alarm identifies that the key is located in the vehicle, the anti-theft alarm automatically shields the alarm state and only prompts the vehicle high-voltage interlocking abnormality. The vehicle controller controls the vehicle to be powered off and cannot be driven.

[0026] The anti-theft controller sends the battery position information to the owner through the vehicle remote terminal after power-on, power-off, and battery theft, specifically including:

[0027] After power-on, power-off, and battery theft, the anti-theft controller uploads the battery position information to the CAN network in real time, and the vehicle remote terminal receives the battery position information from the CAN network and sends the battery position information to the user's mobile terminal. The working voltage of the anti-theft controller is 24V, and the power supply source of the anti-theft controller is BMS constant power or power battery. When the vehicle lead-acid storage battery is in a normal state, the battery management system and the anti-theft controller are powered by the vehicle lead-acid storage battery. When the vehicle lead-acid storage battery is in a fault state, the anti-theft controller directly takes power from the 8 strings of power batteries near the anti-theft controller in the power battery, and the power battery powers the anti-theft controller. When the power battery powers the anti-theft controller, the power supply time of the power battery is less than or equal to 6h.

[0028] The battery anti-theft control system and method of the present application, when the high-pressure interlocking detection result of the whole vehicle is normal, the battery pack interlocking detection is carried out through the anti-theft controller, and when the battery pack interlocking detection is abnormal, the vehicle high-pressure interlocking abnormal information is sent to the whole vehicle controller and the anti-theft alarm to activate the whole vehicle controller and the anti-theft alarm, and the anti-theft controller has a positioning function, which can be used to send the whole vehicle high-pressure interlocking abnormal information, the battery pack interlocking abnormal information and the battery position information to the owner through the whole vehicle remote terminal, through the power battery early warning and the short-time positioning technology of the battery pack, the lost battery position can be quickly found, the major property loss can be recovered, and the problem of battery anti-theft of new energy light truck can be solved. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to make the purpose, technical scheme and advantages of the present application clearer, the present application will be further described below with reference to the drawings, in which:

[0030] Figure 1 It is a schematic diagram of the assembly position of the power battery of the pure electric light truck on the whole vehicle.

[0031] Figure 2 It is a structure block diagram of the embodiment of the battery anti-theft control system provided by the present application.

[0032] Figure 3 It is a high-voltage electrical principle diagram of the pure electric light truck.

[0033] Figure 4 It is a high-voltage electrical principle diagram of the power battery pack.

[0034] Figure 5 It is a flow chart of the battery anti-theft control method provided by the present application.

[0035] The reference signs are explained as follows: 1-power battery system, 2-high voltage distribution box, 3-whole vehicle controller, 4-whole vehicle remote terminal, 5-anti-theft alarm, 6-instrument panel, 11-power battery, 12-battery management system, 13-anti-theft controller, 14-isolation detection module, 15-battery high-voltage output socket, 16-repair switch socket, 17-main positive relay, 18-pre-charge resistor, 19-pre-charge relay, 110-current sensor, 111-main negative relay, 112-driving control line, 113-interlocking connection line, 114-high-voltage socket interlocking signal line, 21-high-voltage loop, 22-high-voltage interlocking connector, 23-high-voltage device. DETAILED DESCRIPTION

[0036] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative in nature and is in no way intended to limit the present disclosure, its application, or uses. The present disclosure can be implemented in numerous different forms, not limited to the embodiments described herein. These embodiments are provided so that this disclosure will be thorough and complete, and fully convey the scope of the present disclosure to those skilled in the art. It should be noted that the relative arrangement of the components and steps set forth in these embodiments, the components of the materials, numerical expressions, and numerical values, unless specifically stated otherwise, should be interpreted as merely illustrative, rather than as a limitation.

[0037] The terms "first", "second", and similar terms used in the present disclosure do not denote any order, number, or importance, but are used to distinguish different parts. The terms "comprise", "include" or "contain" and similar terms mean that the elements before the term encompass the elements listed after the term, and do not exclude the possibility of also encompassing other elements. "Up", "down", and the like are used only to indicate relative positional relationships, which may also change accordingly when the absolute position of the described object changes.

[0038] In the present disclosure, when it is described that a specific component is located between a first component and a second component, there can be an intervening component between the specific component and the first component or the second component, or there can be no intervening component. When it is described that a specific component is connected to other components, the specific component can be directly connected to the other components without an intervening component, or can not be directly connected to the other components with an intervening component.

[0039] All terms used in the present disclosure, including technical terms or scientific terms, have the same meaning as understood by a person of ordinary skill in the art to which the present disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in a general dictionary should be interpreted in a manner consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or excessively formalized sense, unless otherwise explicitly defined herein.

[0040] Techniques, methods, and devices known to those of ordinary skill in the relevant art can not be discussed in detail, but should be considered as part of the specification where appropriate.

[0041] Figure 1 The assembly position of the power battery on the whole vehicle is shown. The power battery is assembled in the light truck frame, two rows of lifting lugs are fixed on the lower plane of the vehicle frame longitudinal beam, and the whole battery pack is semi-hidden in the vehicle frame. The plug-in position of the battery pack and the vehicle chassis wire harness is located at the front of the vehicle, which is composed of high-voltage plug-in and low-voltage plug-in, wherein the high-voltage plug-in has high-voltage interlocking function.

[0042] As Figure 2As shown, the battery anti-theft control system provided by the embodiment includes: a power battery system 1, a high-voltage power distribution box 2, a vehicle controller 3, a vehicle remote terminal 4 and an anti-theft alarm 5. The power battery system 1 includes a power battery 11, a battery management system (BMS) 12 and an anti-theft controller 13. The anti-theft controller 13 is connected with the vehicle controller (VCD) 3 and the anti-theft alarm 5. The power battery 11 is connected with the high-voltage power distribution box (PDU) 2 through a battery bus. The high-voltage power distribution box 2 is internally divided into a plurality of high-voltage loops 21. Each high-voltage loop 21 is connected with a high-voltage device 23. A high-voltage interlock connector 22 is arranged in each high-voltage loop 21. The high-voltage power distribution box 2 is used for vehicle high-voltage distribution between the high-voltage loops 21 and vehicle high-voltage interlock detection on the high-voltage interlock connectors 22 corresponding to the high-voltage loops 21. The high-voltage power distribution box 2 is connected with the anti-theft controller 13. The high-voltage power distribution box 2 is also used for sending vehicle high-voltage interlock detection results to the anti-theft controller 13. The anti-theft controller 13 is used for battery pack interlock detection when the vehicle high-voltage interlock detection result is normal. When the battery pack interlock detection is abnormal, the anti-theft controller 13 sends vehicle high-voltage interlock abnormal information to the vehicle controller 3 and the anti-theft alarm 5 to activate the vehicle controller 3 and the anti-theft alarm 5 to alarm. The vehicle controller 3 is used for controlling the buzzer of the instrument panel 6 to sound and sending vehicle high-voltage interlock abnormal information to the vehicle remote terminal 4. The anti-theft controller 13 has a positioning function to report the battery position to the vehicle remote terminal 4 in real time. The vehicle remote terminal 4 is used for sending vehicle high-voltage interlock abnormal information and / or battery pack interlock abnormal information and / or battery position information to the vehicle owner.

[0043] The anti-theft alarm 5 can be a vehicle body alarm system, i.e. a traditional vehicle anti-theft alarm device. Figure 3As shown, the high-voltage device 23 includes at least one of a motor drive controller, a fast charging circuit, an air conditioner electric compressor, a passenger cabin heater, a low-voltage power supply circuit, a water heating circuit, an upper-mounted circuit, and a slow charging circuit. It should be noted that the present application does not specifically limit the number and type of high-voltage devices 23. The high-voltage of the power battery is connected to the high-voltage distribution box 2 through the battery bus, and the high-voltage distribution box 2 is responsible for the distribution of the high-voltage of the whole vehicle, which is divided into multiple branches through internal copper bars, such as 8 high-voltage circuits of motor high-voltage circuit (corresponding high-voltage device 23 is drive motor controller), air conditioner high-voltage circuit (corresponding high-voltage device 23 is electric compressor), PTC high-voltage circuit (corresponding high-voltage device 23 is passenger cabin heater), charging high-voltage, etc. The corresponding socket of each high-voltage circuit 21 is installed on the high-voltage distribution box 2, and the high-voltage plug end plug is a high-voltage interlocking connector 22, wherein each high-voltage interlocking connector 22 includes a high-voltage socket and a high-voltage plug connected to each other, wherein the socket post of the high-voltage socket is installed on the battery pack shell, and the high-voltage plug is crimped to the high-voltage cable. The interlocking signal line of each high-voltage interlocking connector 22 is short-circuited at the high-voltage plug end, and when the high-voltage plug is inserted into the high-voltage socket, the high-voltage plug end interlocking short-circuit is connected to the socket end interlocking socket, that is, the high-voltage socket and plug interlocking signal line is conducted. When the vehicle is connected, the high-voltage distribution box 2 performs high-voltage interlocking detection at the whole vehicle end, that is, it is responsible for the interlocking detection of the motor, air conditioner defrosting, PTC and other circuits. After detecting the interlocking signal normally (that is, the high-voltage distribution box 2 detects that all the high-voltage plug interlocking lines contained therein are conducted), it is reported to the anti-theft controller 13 arranged in the battery pack in the form of CAN message.

[0044] Further, the anti-theft controller 13 is externally attached with an antenna receiver (not shown), and the antenna receiver is pasted on the shell of the power battery system 1 to realize the GPS positioning function; the anti-theft controller 13 accesses the vehicle CAN network, and is used to receive the high-voltage detection state of the whole vehicle end reported by the high-voltage distribution box 2 through a preset ID; the battery management system 12, the vehicle controller 3 and the vehicle remote terminal 4 also access the vehicle CAN network.

[0045] Further, as shown in FIG. 1, Figure 4As shown, the power battery 11 includes a battery high-voltage main positive loop and a battery high-voltage main negative loop, an output end of the battery high-voltage main positive loop and the battery high-voltage main negative loop is provided with a battery high-voltage output socket 15, the battery high-voltage main positive loop is provided with a main positive relay 17 and a maintenance switch socket 16, the main positive relay 17 is connected in parallel with a pre-charge resistor 18 and a pre-charge relay 19 connected in series with each other at both ends, the battery high-voltage main negative loop is provided with a current sensor 110 and a main negative relay 111, the current sensor 110 is used to collect a battery external discharge current value in real time, and the battery remaining capacity is calculated according to the battery external discharge current value; an insulation detection module 14 is transversely arranged between the battery high-voltage main positive loop and the battery high-voltage main negative loop, which is used to detect the insulation value of the battery high-voltage main positive loop and / or the battery high-voltage main negative loop to ground, and an insulation failure alarm is given in time when insulation is poor, the insulation detection module 14 is connected with the battery management system 12, and is used to report the insulation detection result to the battery management system 12, and the battery management system 12 is also used to report the insulation detection result to the vehicle controller 3 through a CAN network. Wherein, the maintenance switch socket 16 is a manually pluggable maintenance switch (MSD), which is used to manually cut off the high voltage during maintenance.

[0046] Further, as shown in the figure, Figure 4 The battery management system 12 is connected with the main positive relay 17, the main negative relay 111 and the pre-charge relay 19 through driving control lines 112 respectively, and is used to control the main positive relay 17, the main negative relay 111 and the pre-charge relay 19 to work, and is responsible for the power-on and power-off of the vehicle; the battery management system 12 is specifically used for: first closing the main negative relay 111 and the pre-charge relay 19, pre-charging the motor drive controller in the high-voltage distribution box 2, when the pre-charge voltage reaches a preset amplitude range (for example, 90%) of the battery pack voltage, controlling the main positive relay 17 to be closed, and cutting off the pre-charge relay 19 after a delay of a preset time (for example, 200ms), so that the vehicle maintains a high-voltage output state.

[0047] Further, the maintenance switch socket 16 is connected with an interlocking connection line 113, which is connected with the anti-theft controller 13, and the battery high-voltage output socket 15 is connected with two interlocking connection lines 113, one of which is connected with the anti-theft controller 13, and the other is connected with the maintenance switch socket 16 through a high-voltage socket interlocking signal line 114.

[0048] Further, the working voltage of the anti-theft controller 13 is 24V, the power supply source of the anti-theft controller 13 is BMS constant power or power battery 11, when the whole vehicle lead-acid storage battery is in a normal state, the whole vehicle lead-acid storage battery supplies power for the battery management system 12 and the anti-theft controller 13; when the whole vehicle lead-acid storage battery is in a fault state, the anti-theft controller 13 directly takes power from 8 strings of power batteries close to the anti-theft controller 13 in the power battery 11, and when the power battery 11 supplies power for the anti-theft controller 13, the power supply time of the power battery 11 is less than or equal to 6h. Wherein, the power battery is composed of a plurality of lithium iron phosphate batteries connected in series, the voltage of a single string battery is 3.2V, such as the battery high voltage 627V of a certain type of battery pack, the emergency working power of the anti-theft controller 13 is 24V, and the voltage of 8 strings of single batteries is 3.2V*8=25.6V, which can be used to supply power for the anti-theft controller 13 in the case that the power supply voltage of the lead-acid storage battery is 24V is cut off, and to provide working power for the operation of the alarm, GPS positioning and other electronic devices. The 8 strings of power storage batteries can supply power for the anti-theft controller 13, considering the power consumption of the anti-theft controller 13, the power battery is not allowed to be used for a long time, and only in an emergency, the power supply time is allowed to be within 6h, that is, the anti-theft controller 13 can use the 8 strings of power batteries close to the anti-theft controller in the power battery to take power within 6h after the power battery is stolen.

[0049] Further, the activation signal interface of the high-voltage distribution box 2, the battery management system 12 and the anti-theft controller 13 is connected with a vehicle end main relay, the whole vehicle controller 3 is used to control the vehicle end main relay to be attracted or disconnected in response to a key opening signal or a key closing signal, so that the high-voltage distribution box 2, the battery management system 12 and the anti-theft controller 13 are powered on or powered off; the anti-theft alarm 5 automatically shields the alarm state when the vehicle key is identified to be located in the vehicle, and only prompts the vehicle high-voltage interlock abnormality, the whole vehicle controller 3 controls the vehicle to be powered off and cannot be driven.

[0050] The battery anti-theft control system provided by the embodiment of the application can detect the battery pack interlock through the anti-theft controller when the whole vehicle high-voltage interlock detection result is normal, and can send the vehicle high-voltage interlock abnormality information to the whole vehicle controller and the anti-theft alarm when the battery pack interlock detection is abnormal, so as to activate the whole vehicle controller and the anti-theft alarm to alarm, and the anti-theft controller has a positioning function, can be used to send the whole vehicle high-voltage interlock abnormality information, the battery pack interlock abnormality information and the battery position information to the vehicle owner through the whole vehicle remote terminal, and can help to quickly find the lost battery position through the power battery early warning and the battery pack short-time positioning technology, so as to recover the major property loss, and can solve the problem of battery anti-theft of a new energy light truck.

[0051] As Figure 5As shown, the battery anti-theft control method provided by the embodiment specifically includes the following steps.

[0052] Step S1, vehicle high voltage interlocking detection is performed through the high voltage distribution box 2, and battery pack interlocking detection is performed through the anti-theft controller 13. When the vehicle high voltage interlocking detection result and the battery pack interlocking detection result are both normal, the vehicle completes high voltage charging under the control of the vehicle controller 3.

[0053] Specifically, when the vehicle lead-acid battery is in a normal state, after the key is turned on, the vehicle controller 3 controls the vehicle end main relay (MC relay) to be attracted, and the high voltage distribution box 2, the battery management system 12 and the anti-theft controller 13 connected to the corresponding activation signal interface of the vehicle end main relay are powered on to enter a working state. After being powered on, the interlocking signal of the high voltage interlocking connector 22 corresponding to each high voltage loop 21 of the high voltage distribution box 2 is normal, the vehicle end high voltage interlocking signal detection is reported to the vehicle CAN network, the anti-theft controller 13 receives the vehicle end high voltage interlocking normal signal from the CAN network through a preset ID, the anti-theft controller 13 detects the interlocking normal signal of the battery high voltage output socket 15 and the maintenance switch socket 16 of the battery pack, reports the battery pack high voltage interlocking signal normal signal to the vehicle CAN network, the vehicle controller 3 receives the battery pack high voltage interlocking signal normal signal from the CAN network, controls the vehicle to complete high voltage charging, and the vehicle is in a drivable state.

[0054] Among them, one end of the vehicle end main relay is connected to the positive electrode of the lead-acid battery with a power supply voltage of 24V, and the other end is connected to the activation signal interface controlled by the battery management system (BMS) 12 or the high voltage distribution box (PDU) 2. After the vehicle controller 3 controls the vehicle end main relay to be attracted, the BMS / PDU hung thereunder all receive 24V activation electricity and enter a working state. The battery management system 12 (including the insulation detection module 14 and the anti-theft controller 13), the high voltage distribution box 2 and the vehicle body controller are powered on, the PDU reports that the vehicle end high voltage interlocking signal detection is normal after being powered on, the anti-theft controller 13 of the battery receives the vehicle end high voltage interlocking normal signal through a preset ID, and reports that the vehicle high voltage interlocking signal is normal after detecting that the battery pack interlocking signal is normal. The vehicle completes high voltage charging and is in a drivable state.

[0055] Step S2, after being powered off, the anti-theft controller 13 enters a low power consumption mode, works with the constant electricity of the lead-acid battery, detects the battery pack interlocking signal in real time, and sends the battery pack interlocking detection result to the anti-theft controller 13.

[0056] Specifically, when the whole vehicle lead-acid storage battery is in a normal state, after the key is turned off, the whole vehicle controller 3 controls the vehicle end main relay to be disconnected, the high-voltage distribution box 2, the battery management system 12 and the anti-theft controller 13 connected to the high-voltage distribution box 2 are powered off in response to the activation signal, at this time, the anti-theft controller 13 enters a low-power consumption mode, and works by using the normal power of the lead-acid storage battery, and detects the interlocking signals of the battery high-voltage output socket 15 and the maintenance switch socket 16 of the battery pack in real time, and reports the battery pack interlocking detection result to the whole vehicle CAN network, and the anti-theft controller 13 receives the battery pack interlocking detection result from the whole vehicle CAN network, and reports the location of the battery in real time by GPS positioning.

[0057] Step S3, when the battery pack interlocking detection result is abnormal, the anti-theft controller 13 sends the battery pack interlocking abnormal information to the whole vehicle controller 3 and the anti-theft alarm 5, so as to activate the whole vehicle controller 3 and the anti-theft alarm 5 to alarm.

[0058] In an embodiment of the battery anti-theft control method of the application, the step S3 can specifically include:

[0059] Step S31, when the key is in the off state, the anti-theft controller 13 detects that the interlocking signals of the battery high-voltage output socket 15 and the maintenance switch socket 16 of the battery pack are abnormal, outputs a 24V high-level signal to the CAN network, and the whole vehicle controller 3 and the anti-theft alarm 5 enter the active state from the sleep state after receiving the 24V high-level signal from the CAN network, at this time, the anti-theft alarm 5 alarms by beeping, the whole vehicle controller 3 controls the buzzer of the instrument panel 6 to sound, and reports the battery pack interlocking abnormal information to the CAN network, and the whole vehicle remote terminal 4 receives the vehicle high-voltage interlocking abnormal information from the CAN network, and sends the vehicle high-voltage interlocking abnormal information to the owner's mobile terminal. At this time, the anti-theft alarm 5 is in the beeping alarm state, and the battery in the anti-theft alarm short message is synchronously sent to the owner's bound mobile phone number, prompting the owner to pay attention to the battery state. In some embodiments of the application, the alarm information can also be reported to the owner's mobile phone APP, and the alarm form of the application is not limited.

[0060] Step S32, after the battery is stolen, the anti-theft controller 13 is connected to the vehicle lead-acid battery power line, the anti-theft controller 13 is automatically switched to the 8 string power battery 11 near the anti-theft controller 13, the anti-theft controller 13 detects the interlocking signal abnormality of the battery pack high voltage output socket 15 and the maintenance switch socket 16, outputs 24V high level signal to the CAN network, and the vehicle controller 3 and the anti-theft alarm 5 enter the active state from the sleep state after receiving the 24V high level signal from the CAN network. At this time, the anti-theft alarm 5 performs warning alarm, the vehicle controller 3 controls the buzzer of the instrument panel 6 to sound, and sends the battery pack interlocking abnormal information to the CAN network. The vehicle remote terminal 4 receives the vehicle high voltage interlocking abnormal information from the CAN network and sends the vehicle high voltage interlocking abnormal information to the owner's mobile terminal. At this time, the battery position information is periodically sent to the user's mobile terminal through the vehicle remote terminal 4 within 6 hours after being stolen.

[0061] After the battery is stolen, the anti-theft controller is connected to the vehicle lead-acid battery power line, and the anti-theft controller 13 is automatically switched to the 8 string power battery near the anti-theft controller 13, and enters the low power consumption working mode. Within 6 hours after being stolen, the GPS positioning is periodically sent to the owner's mobile phone APP.

[0062] Step S33, when the anti-theft alarm 5 identifies that the vehicle key is located in the vehicle, the anti-theft alarm 5 automatically shields the alarm state, and only prompts the vehicle high voltage interlocking abnormality. The vehicle controller 3 controls the vehicle to be powered off and cannot be driven. In this way, false alarms can be reduced.

[0063] When the anti-theft alarm 5 identifies that the vehicle key is located in the vehicle, the battery anti-theft alarm is not needed at this time, that is, the alarm caused by the battery being stolen is automatically shielded. At this time, if the battery high voltage plug-in, MSD plug-in is performed, only the vehicle high voltage interlocking abnormality is prompted, the vehicle is powered off, and the setting cannot be driven.

[0064] Step S4, after power-on, power-off and battery theft, the anti-theft controller 13 sends the battery position information to the owner through the vehicle remote terminal 4.

[0065] Specifically, after power-on, power-off and battery theft, the anti-theft controller 13 uploads the battery position information to the CAN network in real time, the vehicle remote terminal 4 receives the battery position information from the CAN network and sends the battery position information to the user mobile terminal, wherein the working voltage of the anti-theft controller 13 is 24V, the power supply source of the anti-theft controller 13 is BMS constant power or the power battery 11, when the vehicle lead-acid battery is in a normal state, the battery management system 12 and the anti-theft controller 13 are powered by the vehicle lead-acid battery; when the vehicle lead-acid battery is in a fault state, the anti-theft controller 13 directly takes power from 8 strings of power batteries in the power battery 11 close to the anti-theft controller 13, and when the power battery 11 powers the anti-theft controller 13, the power supply time of the power battery 11 is less than or equal to 6h.

[0066] The battery anti-theft control method provided by the embodiment of the application can detect the battery pack interlocking when the high-voltage interlocking detection result of the vehicle is normal, and can send the vehicle high-voltage interlocking abnormal information to the vehicle controller and the anti-theft alarm when the battery pack interlocking detection is abnormal, so as to activate the alarm of the vehicle controller and the anti-theft alarm, and the anti-theft controller has a positioning function, can send the vehicle high-voltage interlocking abnormal information, the battery pack interlocking abnormal information and the battery position information to the owner through the vehicle remote terminal, and can help to quickly find the lost battery position through the power battery early warning and the short-time positioning technology of the battery pack, so as to recover the major property loss and solve the problem of battery anti-theft of the new energy light truck.

[0067] So far, the embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein according to the above description.

[0068] Although some specific embodiments of the present disclosure have been described in detail through examples, those skilled in the art should understand that the above examples are only for illustration, not for limiting the scope of the present disclosure. Those skilled in the art should understand that the above embodiments can be modified or some technical features can be replaced equivalently without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims

1. A battery theft control system, characterized by, The application relates to a power battery system, a high-voltage distribution box, a vehicle controller, a vehicle remote terminal and a theftproof alarm, wherein the power battery system comprises a power battery, a battery management system and a theftproof controller, the theftproof controller is connected with the vehicle controller and the theftproof alarm, the power battery is connected with the high-voltage distribution box through a battery bus, the high-voltage distribution box is internally divided into multiple high-voltage loops, each high-voltage loop is respectively connected with a high-voltage device, a high-voltage interlocking connector is arranged in each high-voltage loop, the high-voltage distribution box is used for distributing high voltage of the vehicle among the high-voltage loops and detecting high-voltage interlocking of the vehicle, the high-voltage distribution box is connected with the theftproof controller, the high-voltage distribution box is further used for sending high-voltage interlocking detection results of the vehicle to the theftproof controller, the theftproof controller is used for detecting battery pack interlocking when the high-voltage interlocking detection results of the vehicle are normal, and sending battery pack interlocking abnormal information to the vehicle controller and the theftproof alarm when the battery pack interlocking is abnormal, so as to activate the vehicle controller and the theftproof alarm to alarm, the vehicle controller is used for controlling a buzzer of an instrument panel to sound and sending the battery pack interlocking abnormal information to the vehicle remote terminal, the theftproof controller has a positioning function and is used for sending a battery position to the vehicle remote terminal in real time, and the vehicle remote terminal is used for sending high-voltage interlocking abnormal information and / or battery pack interlocking abnormal information and / or battery position information to a vehicle owner. The power battery comprises a battery high-voltage main positive loop and a battery high-voltage main negative loop, a battery high-voltage output socket is arranged between output ends of the battery high-voltage main positive loop and the battery high-voltage main negative loop, a main positive relay and a maintenance switch socket are arranged on the battery high-voltage main positive loop, a pre-charging resistor and a pre-charging relay which are connected with each other in series are connected in parallel at two ends of the main positive relay, a current sensor and a main negative relay are arranged on the battery high-voltage main negative loop, the current sensor is used for collecting a battery external discharge current value in real time and calculating a battery residual capacity according to the battery external discharge current value, an insulation detection module is arranged across the battery high-voltage main positive loop and the battery high-voltage main negative loop, and the insulation detection module is used for detecting insulation values of the battery high-voltage main positive loop and / or the battery high-voltage main negative loop to ground, the insulation detection module is connected with the battery management system and is used for sending an insulation detection result to the battery management system, and the battery management system is further used for sending the insulation detection result to the vehicle controller through a CAN network. The theftproof controller is externally connected with an antenna receiver which is pasted on a shell of the power battery system to realize a GPS positioning function, the theftproof controller is connected with a vehicle CAN network and is used for receiving a high-voltage detection state of a vehicle end sent by the high-voltage distribution box through a preset ID, the battery management system, the vehicle controller and the vehicle remote terminal are also connected with the vehicle CAN network.

2. The battery theft prevention control system of claim 1, wherein, ​ 3. The battery theft prevention control system of claim 1, wherein, The battery management system is connected with the main positive relay, the main negative relay and the pre-charging relay through driving control lines, for controlling the main positive relay, the main negative relay and the pre-charging relay to work, and being responsible for the power-on and power-off of the vehicle; the battery management system is specifically used for: first closing the main negative relay and the pre-charging relay, pre-charging the motor drive controller in the high-voltage distribution box, controlling the main positive relay to be closed when the pre-charging voltage reaches the preset amplitude range of the battery pack voltage, and cutting off the pre-charging relay after a delay of a preset time, so that the whole vehicle maintains a high-voltage output state.

4. The battery theft prevention control system of claim 1, wherein, The maintenance switch socket is connected with an interlocking connection line connected with the anti-theft controller, and the battery high-voltage output socket is connected with two interlocking connection lines, one of which is connected with the anti-theft controller, and the other is connected with the maintenance switch socket through a high-voltage socket interlocking signal line.

5. The battery theft prevention control system of claim 1, wherein, The high-voltage device includes at least one of a motor drive controller, a fast charging circuit, an air conditioner electric compressor, a passenger compartment heater, a low-voltage power supply circuit, a water heating circuit, an upper installation circuit and a slow charging circuit.

6. The battery theft prevention control system of claim 1, wherein, The working voltage of the anti-theft controller is 24V, and the power supply source of the anti-theft controller is BMS constant power or power battery. When the lead-acid storage battery of the whole vehicle is in a normal state, the battery management system and the anti-theft controller are powered by the lead-acid storage battery of the whole vehicle. When the lead-acid storage battery of the whole vehicle is in a fault state, the anti-theft controller directly takes power from 8 strings of power batteries close to the anti-theft controller in the power battery, and when the anti-theft controller is powered by the power battery, the power supply time of the power battery is less than or equal to 6h.

7. The battery theft prevention control system of claim 1, wherein, The activation signal interface of the high-voltage distribution box, the battery management system and the anti-theft controller is connected with a vehicle end main relay, and the whole vehicle controller is used to control the vehicle end main relay to be attracted or disconnected in response to a key opening signal or a key closing signal, so as to power on or power off the high-voltage distribution box, the battery management system and the anti-theft controller. When the anti-theft alarm identifies that the vehicle key is located in the vehicle, it automatically shields the alarm state and only prompts the vehicle high-voltage interlock abnormality. The whole vehicle controller controls the vehicle to be powered off and cannot be driven.

8. A battery theft control method using the system according to any one of claims 1 to 7, characterized by, The method comprises the following steps: The vehicle high-voltage interlock detection is performed through the high-voltage distribution box, the battery pack interlock detection is performed through the anti-theft controller, and when the vehicle high-voltage interlock detection result and the battery pack interlock detection result are both normal, the vehicle is controlled to complete the high-voltage on; After power-off, the anti-theft controller enters a low-power consumption mode and works by using the constant power of the lead-acid storage battery, detects the battery pack interlock signal in real time, and sends the battery pack interlock detection result to the anti-theft controller; When the battery pack interlock detection result is abnormal, the anti-theft controller sends the battery pack interlock abnormality information to the whole vehicle controller and the anti-theft alarm to activate the whole vehicle controller and the anti-theft alarm to alarm; After power-on, power-off and battery theft, the anti-theft controller sends the battery position information to the vehicle owner through the whole vehicle remote terminal.

9. The battery theft prevention control method of claim 8, wherein, The vehicle high-voltage interlocking detection is performed through the high-voltage distribution box, the battery pack interlocking detection is performed through the anti-theft controller, and when the vehicle high-voltage interlocking detection result and the battery pack interlocking detection result are both normal, the vehicle completes the high-voltage charging, and specifically includes the following steps. When the vehicle lead-acid storage battery is in a normal state, the key is turned on, the vehicle controller controls the vehicle end main relay to be attracted, the high-voltage distribution box, the battery management system and the anti-theft controller connected to the corresponding active signal interface of the vehicle end main relay are powered on, and enter a working state. After being powered on, the interlocking signals of the high-voltage interlocking connectors corresponding to each high-voltage loop of the high-voltage distribution box are normal, the vehicle end high-voltage interlocking signal detection is reported to the vehicle CAN network, the anti-theft controller receives the vehicle end high-voltage interlocking normal signal from the CAN network through a preset ID, the anti-theft controller detects the interlocking normal signals of the battery high-voltage output socket and the maintenance switch socket of the battery pack, reports the battery pack high-voltage interlocking signal normal signal to the vehicle CAN network, the vehicle controller receives the battery pack high-voltage interlocking signal normal signal from the CAN network, controls the vehicle to complete the high-voltage charging, and the vehicle is in a drivable state, After being powered off, the anti-theft controller enters a low-power mode, works by using the constant power of the lead-acid storage battery, detects the battery pack interlocking signal in real time, and sends the battery pack interlocking detection result to the anti-theft controller, and specifically includes the following steps. When the vehicle lead-acid storage battery is in a normal state, the key is turned off, the vehicle controller controls the vehicle end main relay to be disconnected, the high-voltage distribution box, the battery management system and the anti-theft controller connected to the corresponding active signal interface of the vehicle end main relay are powered off, at this time, the anti-theft controller enters a low-power mode, works by using the constant power of the lead-acid storage battery, detects the interlocking signals of the battery high-voltage output socket and the maintenance switch socket of the battery pack in real time, and reports the battery pack interlocking detection result to the vehicle CAN network, and the anti-theft controller receives the battery pack interlocking detection result from the vehicle CAN network. When the battery pack interlocking detection result is abnormal, the anti-theft controller sends the battery pack interlocking abnormal information to the vehicle controller and the anti-theft alarm to activate the vehicle controller and the anti-theft alarm to alarm, and specifically includes the following steps. When the key is in an off state, the anti-theft controller detects that the interlocking signals of the battery high-voltage output socket and the maintenance switch socket of the battery pack are abnormal, outputs a 24V high-level signal to the CAN network, the vehicle controller and the anti-theft alarm enter an active state from a sleep state after receiving the 24V high-level signal from the CAN network, at this time, the anti-theft alarm alarms by beeping, the vehicle controller controls the buzzer of the instrument panel to sound, reports the battery pack interlocking abnormal information to the CAN network, the vehicle remote terminal receives the battery pack interlocking abnormal information from the CAN network, and sends the battery pack interlocking abnormal information to the vehicle owner's mobile terminal. After the battery is stolen, the power supply line of the anti-theft controller is cut off, the anti-theft controller automatically switches to directly take power from the 8 strings of power batteries near the anti-theft controller in the power battery, the anti-theft controller detects the abnormal interlocking signal of the battery pack high voltage output socket and the maintenance switch socket, outputs a 24V high level signal to the CAN network, and the vehicle controller and the anti-theft alarm enter the active state from the sleep state after receiving the 24V high level signal from the CAN network. At this time, the anti-theft alarm performs a warning alarm, the vehicle controller controls the buzzer of the instrument panel to sound, and sends the battery pack interlocking abnormal information to the CAN network, and the vehicle remote terminal receives the battery pack interlocking abnormal information from the CAN network and sends the battery pack interlocking abnormal information to the vehicle owner's mobile terminal. At this time, the battery position information is sent to the user's mobile terminal through the vehicle remote terminal periodically within 6 hours after being stolen; When the anti-theft alarm identifies that the vehicle key is located in the vehicle, the anti-theft alarm automatically shields the alarm state, and only prompts the vehicle high voltage interlocking abnormality, and the vehicle controller controls the vehicle to be powered off and cannot be driven, The battery position information sent by the anti-theft controller to the vehicle owner through the vehicle remote terminal after power-on, power-off and battery theft includes: After power-on, power-off and battery theft, the anti-theft controller uploads the battery position information to the CAN network in real time, and the vehicle remote terminal receives the battery position information from the CAN network and sends the battery position information to the user's mobile terminal. The working voltage of the anti-theft controller is 24V, the power supply source of the anti-theft controller is BMS constant power or power battery, and when the vehicle lead-acid storage battery is in normal state, the battery management system and the anti-theft controller are powered by the vehicle lead-acid storage battery. When the vehicle lead-acid storage battery is in a fault state, the anti-theft controller directly takes power from the 8 strings of power batteries near the anti-theft controller in the power battery, and the power battery supplies power to the anti-theft controller, and the power supply time of the power battery is less than or equal to 6h.

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