WO2018133347A1 - 一种电池短路的检测方法和装置 - Google Patents

一种电池短路的检测方法和装置 Download PDF

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Publication number
WO2018133347A1
WO2018133347A1 PCT/CN2017/093210 CN2017093210W WO2018133347A1 WO 2018133347 A1 WO2018133347 A1 WO 2018133347A1 CN 2017093210 W CN2017093210 W CN 2017093210W WO 2018133347 A1 WO2018133347 A1 WO 2018133347A1
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Prior art keywords
power supply
contactor
supply voltage
charging
voltage
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Ceased
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PCT/CN2017/093210
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English (en)
French (fr)
Inventor
陈德清
马海
赵飞
吴幸
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Contemporary Amperex Technology Co Ltd
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Contemporary Amperex Technology Co Ltd
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Publication of WO2018133347A1 publication Critical patent/WO2018133347A1/zh
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/327—Testing of circuit interrupters, switches or circuit-breakers

Definitions

  • the present application relates to the field of contactor detection technologies, and in particular, to a contactor adhesion detection method, a detection device, and a battery management system.
  • the power supply device In the case where the contactor in the power supply circuit of the power supply device is stuck, the power supply device is used to charge the battery in the battery management system, such as in the case where the contactor in the power supply circuit of the charging post is stuck, the charging pile is used. Charging the battery in the battery management system can cause the contactor in the charging circuit of the battery management system to also be stuck. Therefore, if the contactor in the power supply circuit of the power supply device cannot be determined to be stuck, the power supply device is used.
  • the battery management system is less secure than charging the battery in the battery management system.
  • the embodiment of the present application provides a contactor adhesion detecting method, a detecting device, and a battery management system, which are used to solve the problem of low safety of the battery management system in the prior art.
  • an embodiment of the present application provides a contactor adhesion detecting method, where the method includes:
  • the step of sending the indication information for instructing the power supply device to supply power to the power supply device including:
  • step of detecting the power supply voltage in the process of pulling the voltage according to the power supply voltage value including:
  • the supply voltage of the contactor output terminal in the power supply circuit of the power supply device is detected at least twice.
  • step of detecting the supply voltage of the contactor output terminal in the power supply circuit of the power supply device at least twice including:
  • the supply voltage between the positive contactor output and the negative contactor output in the power supply circuit of the power supply device is detected at least twice.
  • step of determining, according to the detected power supply voltage value, whether the contactor in the power supply circuit of the power supply device is stuck according to the aspect and any possible implementation manner, including:
  • the power supply device is And transmitting indication information for instructing the power supply device to stop power supply.
  • the power supply device comprising a charging post.
  • the power supply device before the power supply device is required to provide power, the power supply device needs to generate indication information for indicating that the power supply device performs power supply, wherein the indication information carries a power supply voltage value, and then the power supply device is detected according to the power supply device.
  • the supply voltage value pulls up the voltage during the voltage supply process.
  • the contactor in the power supply circuit of the power supply device that does not cause the adhesion does not close, and thus the power supply of the power supply device
  • the output of the contactor in the loop does not output a voltage
  • the contactor in the power supply device in which the blocking occurs is in a closed state, so that the output of the contactor in the power supply circuit of the power supply device can output a voltage, so the power supply device
  • the value of the power supply voltage detected when the contactor in the power supply circuit is stuck and the value of the power supply voltage detected when the contactor in the power supply circuit of the power supply device is not stuck is different, so the value of the detected power supply voltage can be judged according to the detected power supply voltage value.
  • the detected power supply voltage value used is a power supply voltage in a process in which the power supply device pulls up the voltage according to the power supply voltage value, that is, the power supply device is in accordance with the power supply voltage. During the process of pulling up the voltage, it is detected whether the contactor in the power supply circuit of the power supply device is stuck. Since the output voltage of the power supply device has not reached the value of the power supply voltage carried in the indication information, the battery management system cannot be charged.
  • the contactor in the circuit is closed, so the output voltage of the power supply device cannot cause the contactor in the charging circuit of the battery management system to be stuck, and in the process of determining whether the contactor in the power supply circuit of the power supply device is stuck, It poses a threat to the security of the battery management system, thus further improving the security of the battery management system.
  • an embodiment of the present application provides a contactor adhesion detecting device, where the device includes:
  • a sending unit configured to send, to the power supply device, indication information for instructing the power supply device to perform power supply, where the indication information carries a power supply voltage value;
  • a detecting unit configured to detect a power supply voltage in a process in which the power supply device pulls a voltage according to the power supply voltage value
  • the determining unit is configured to determine, according to the detected power supply voltage value, whether the contactor in the power supply circuit of the power supply device is stuck.
  • detecting unit is specifically configured to:
  • the supply voltage of the contactor output terminal in the power supply circuit of the power supply device is detected at least twice.
  • detecting unit is specifically configured to:
  • the supply voltage between the positive contactor output and the negative contactor output in the power supply circuit of the power supply device is detected at least twice.
  • determining unit is specifically configured to:
  • the indication information for instructing the power supply device to stop the power supply is sent to the power supply device.
  • the power supply device comprising a charging post.
  • the power supply device before the power supply device is required to provide power, the power supply device needs to generate indication information for indicating that the power supply device performs power supply, wherein the indication information carries a power supply voltage value, and then the power supply device is detected according to the power supply device.
  • the supply voltage value pulls up the voltage during the voltage supply process.
  • the contactor in the power supply circuit of the power supply device that does not cause the adhesion does not close, and thus the power supply of the power supply device
  • the output of the contactor in the loop does not output a voltage
  • the contactor in the power supply device in which the blocking occurs is in a closed state, so that the output of the contactor in the power supply circuit of the power supply device can output a voltage, so the power supply device
  • the value of the power supply voltage detected when the contactor in the power supply circuit is stuck and the value of the power supply voltage detected when the contactor in the power supply circuit of the power supply device is not stuck is different, so the value of the detected power supply voltage can be judged according to the detected power supply voltage value.
  • the detected power supply voltage value used is a power supply voltage in a process in which the power supply device pulls up the voltage according to the power supply voltage value, that is, the power supply device is in accordance with the power supply voltage. During the process of pulling up the voltage, it is detected whether the contactor in the power supply circuit of the power supply device is stuck. Since the output voltage of the power supply device has not reached the value of the power supply voltage carried in the indication information, the battery management system cannot be charged.
  • the contactor in the circuit is closed, so the output voltage of the power supply device cannot cause the contactor in the charging circuit of the battery management system to be stuck, and in the process of determining whether the contactor in the power supply circuit of the power supply device is stuck, It poses a threat to the security of the battery management system, thus further improving the security of the battery management system.
  • an embodiment of the present application provides a contactor adhesion detecting method, where the method is applied to a battery management system, and the method includes:
  • step of transmitting the communication handshake message carrying the power supply voltage value to the charging post including:
  • step of detecting the supply voltage in the process of pulling the voltage according to the supply voltage value including:
  • the detected supply voltage between the positive contactor input terminal and the negative contactor input terminal of the charging circuit of the battery management system is detected as the positive contactor output terminal and the negative electrode in the power supply circuit of the charging post The corresponding supply voltage between the output of the contactor.
  • step of determining, according to the detected power supply voltage value, whether the contactor in the power supply circuit of the charging post is stuck according to the aspect and any possible implementation manner, including:
  • the indication information for instructing the charging pile to stop supplying power is sent to the charging post.
  • the communication handshake message carrying the supply voltage value needs to be sent to the charging post, and then the supply voltage in the process of pulling the voltage according to the supply voltage value is detected.
  • the contactor in the power supply circuit of the charging pile that does not stick to the charging pile is not closed, and the output end of the contactor in the power supply circuit of the charging pile does not output a voltage.
  • the contactor in the charging pile in which the adhesion occurs is in a closed state, so that the output end of the contactor in the power supply circuit of the charging post can output a voltage, and thus the power supply detected when the contactor in the power supply circuit of the charging post is stuck.
  • the voltage value is different from the value of the power supply voltage detected when the contactor in the power supply circuit of the charging post is not stuck. Therefore, it can be determined whether the contactor in the power supply circuit of the charging post is stuck according to the detected power supply voltage value. , thereby improving the security of the battery management system.
  • the detected power supply voltage value used is a power supply voltage in a process in which the charging pile pulls up the voltage according to the power supply voltage value, that is, the charging pile is in accordance with the power supply voltage. During the process of pulling up the voltage, it is detected whether the contactor in the power supply circuit of the charging post is stuck.
  • the output voltage of the charging post has not reached the value of the power supply voltage carried in the communication handshake message, and cannot be made in the battery management system.
  • the contactor in the charging circuit is closed, so the output voltage of the charging post cannot cause the contactor in the charging circuit of the battery management system to be stuck, and in the process of determining whether the contactor in the power supply circuit of the charging post is stuck, It does not pose a threat to the safety of the battery management system, thus further improving the security of the battery management system.
  • the embodiment of the present application provides a battery management system, where the battery management system includes:
  • a sending unit configured to send, to the charging post, a communication handshake message carrying a supply voltage value
  • a detecting unit configured to detect a power supply voltage in a process in which the charging pile pulls a voltage according to the power supply voltage value
  • the determining unit is configured to determine, according to the detected power supply voltage value, whether the contactor in the power supply circuit of the charging post is stuck.
  • detecting unit is specifically configured to:
  • the detected supply voltage between the positive contactor input terminal and the negative contactor input terminal of the charging circuit of the battery management system is detected as the positive contactor output terminal and the negative electrode in the power supply circuit of the charging post The corresponding supply voltage between the output of the contactor.
  • determining unit is specifically configured to:
  • the indication information for instructing the charging pile to stop supplying power is sent to the charging post.
  • the communication handshake message carrying the supply voltage value needs to be sent to the charging post, and then the supply voltage in the process of pulling the voltage according to the supply voltage value is detected.
  • the contactor in the power supply circuit of the charging pile that does not stick to the charging pile is not closed, and the output end of the contactor in the power supply circuit of the charging pile does not output a voltage.
  • the contactor in the charging pile where the adhesion occurs will be In the closed state, the output of the contactor in the power supply circuit of the charging post can output a voltage, so that the value of the supply voltage detected when the contactor in the power supply circuit of the charging post is stuck and the power supply circuit of the charging post The value of the power supply voltage detected when the contactor is not stuck is different. Therefore, it can be determined whether the contactor in the power supply circuit of the charging post is stuck according to the detected power supply voltage value, thereby improving the safety of the battery management system.
  • the detected power supply voltage value used is a power supply voltage in a process in which the charging pile pulls up the voltage according to the power supply voltage value, that is, the charging pile is in accordance with the power supply voltage.
  • the output voltage of the charging post has not reached the value of the power supply voltage carried in the communication handshake message, and cannot be made in the battery management system.
  • the contactor in the charging circuit is closed, so the output voltage of the charging post cannot cause the contactor in the charging circuit of the battery management system to be stuck, and in the process of determining whether the contactor in the power supply circuit of the charging post is stuck, It does not pose a threat to the safety of the battery management system, thus further improving the security of the battery management system.
  • FIG. 1 is a schematic flow chart of a contact stick adhesion detecting method provided by an embodiment of the present application
  • FIG. 2 is a schematic flow chart of another contactor adhesion detecting method provided by an embodiment of the present application.
  • FIG. 3 is a schematic diagram of connection of a charging post and a battery management system according to an embodiment of the present application
  • FIG. 4 is a schematic structural diagram of a contactor adhesion detecting device according to an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a battery management system according to an embodiment of the present application.
  • the word “if” as used herein may be interpreted as “when” or “when” or “in response to determining” or “in response to detecting.”
  • the phrase “if determined” or “if detected (conditions or events stated)” may be interpreted as “when determined” or “in response to determination” or “when detected (stated condition or event) “Time” or “in response to a test (condition or event stated)”.
  • the charging of the battery in the battery management system causes the contactor in the charging circuit of the battery management system to also adhere.
  • the problem of low security of the battery management system is provided.
  • the embodiment of the present application provides a corresponding solution: before using the charging post to charge the battery in the battery management system, detecting whether the contactor in the power supply circuit of the charging post is Adhesion occurs to improve the safety of the battery management system.
  • the charging post before the charging pile is required to provide the electric energy, the charging post needs to generate indication information for indicating the charging of the charging post, wherein the indication information carries the power supply voltage value. And then detecting the power supply voltage during the charging of the charging pile according to the supply voltage value.
  • the contactor in the power supply circuit of the power supply device that does not cause blocking does not Closed, so that the output of the contactor in the power supply circuit of the power supply device does not output a voltage, and the contactor in the power supply device where the adhesion occurs is closed, so that the output of the contactor in the power supply circuit of the power supply device can output
  • the voltage so the value of the supply voltage detected when the contactor in the power supply circuit of the charging post is stuck and the value of the supply voltage detected when the contactor in the power supply circuit of the charging post is not stuck is different, and thus can be detected according to The value of the power supply voltage, determining whether the contactor in the power supply circuit of the charging post is stuck, To improve the safety of the battery management systems.
  • the detected power supply voltage value used is a power supply voltage in a process in which the charging pile pulls up the voltage according to the power supply voltage value, that is, the charging pile is in accordance with the power supply voltage.
  • the process of pulling up the voltage it is detected whether the contactor in the power supply circuit of the charging post is stuck, because The output voltage of the charging post has not reached the value of the power supply voltage carried in the indication information, and the contactor in the charging circuit in the battery management system cannot be closed, so the output voltage of the charging pile cannot make contact in the charging circuit of the battery management system.
  • the adhesion occurs in the device, and in the above process of judging whether the contactor in the power supply circuit of the charging post is stuck, the safety of the battery management system is not threatened, thereby further improving the safety of the battery management system.
  • a contactor adhesion detecting method provided by an embodiment of the present application may include the following steps:
  • the indication information for instructing the power supply device to supply power may be sent to the power supply device by determining the power supply voltage value according to the charging voltage of the battery to be charged; The value is encapsulated into the indication information; the indication information is sent to the power supply device.
  • the power supply device charges the battery to be charged, it is required to provide power according to the charging voltage of the battery to be charged, so that the safety of the battery to be charged can be ensured under the premise of ensuring fast charging of the battery to be charged. Therefore, before the supply voltage value is encapsulated to the indication information, the charging voltage of the battery to be charged needs to be determined, and then the charging voltage is determined as the supply voltage value, and is encapsulated into the indication information, and the indication information is sent to the power supply device.
  • the battery to be charged may include a battery in the battery management system.
  • the power supply device and the battery management system may be connected, and the contactor in the power supply circuit of the power supply device is determined not to occur.
  • the power supply device pulls the voltage to the supply voltage value, the battery in the battery management system can be directly charged, thereby achieving the purpose of quickly charging the battery in the battery management system.
  • the power supply device parses the indication information, obtains a power supply voltage value in the indication information, and then supplies the power supply device according to the power supply voltage value.
  • the electric voltage is pulled up from 0V until the supply voltage is pulled up to the supply voltage value, and after the supply voltage is pulled up to the supply voltage value, the contactor in the power supply circuit of the power supply device is closed, and then starts to wait. Recharge the battery for charging.
  • the contactor in the power supply circuit of the power supply device that does not cause blocking does not close, and thus the output terminal of the contactor in the power supply circuit of the power supply device does not output voltage, and
  • the contactor in the power supply device in which the blocking occurs is in a closed state, so that the output end of the contactor in the power supply circuit of the power supply device can output a voltage, and thus the supply voltage detected when the contactor in the power supply circuit of the power supply device is stuck is blocked.
  • the value of the supply voltage detected when the value is not stuck to the contactor in the power supply circuit of the power supply device is different.
  • the value of the power supply voltage detected when the contactor in the power supply circuit of the power supply device is not stuck is 0V
  • the value of the power supply voltage detected when the contactor in the power supply circuit of the power supply device is stuck is greater than 0V, and Less than or equal to the power supply voltage of the power supply device.
  • the contactor in the charging circuit of the battery management system is closed after the power supply device pulls the power supply voltage to the power supply voltage value in the indication information. That is, in the process that the power supply device pulls up the voltage according to the power supply voltage value, the contactor in the charging circuit of the battery management system is not closed, so the battery management system is not adhered regardless of whether the contactor in the power supply circuit of the power supply device is stuck. There is no current generated in the charging circuit.
  • the precondition for the contactor to be stuck is that the contactor is in a closed state and a large current is passed, and the above process does not cause the battery management system to be in the charging circuit. The contactor is stuck. Therefore, when detecting the contact voltage in the power supply circuit of the power supply device by detecting the power supply voltage in the process, whether the contactor in the power supply circuit of the power supply device is stuck or not, the battery is not The security of the management system poses a threat.
  • the supply voltage of the contactor output terminal in the power supply circuit of the power supply device is in the process of pulling the voltage according to the supply voltage value after the contactor in the power supply circuit of the power supply device is stuck. It is ramped up, so it is necessary to detect the supply voltage of the contactor output in the power supply circuit of the power supply device at least twice to determine whether the contactor in the power supply circuit of the power supply device is stuck.
  • the power supply circuit of the power supply device includes two contactors, that is, the positive contactor and the negative contactor, when detecting the supply voltage of the contactor output in the power supply circuit of the power supply device, at least the power supply voltage can be detected.
  • the detection since the value of the power supply voltage detected when the contactor in the power supply circuit of the power supply device is stuck and the power supply voltage value detected when the contactor in the power supply circuit of the power supply device is not stuck is different, the detection may be performed.
  • the value of the supplied voltage is determined to determine whether the contactor in the power supply circuit of the power supply device is stuck.
  • the difference between the supply voltage values between the positive contactor output end and the negative contactor output end in the power supply circuit of the power supply device is greater than or equal to a specified voltage threshold; if any of the detected at least two
  • the difference between the supply voltage values between the positive contactor output end and the negative contactor output end of the power supply circuit of the two adjacent power supply devices is greater than or equal to a specified voltage threshold, and is determined in the power supply circuit of the power supply device.
  • the positive contactor and the negative contactor are stuck; if any two of the detected at least two of the power supply circuits of the power supply device are connected to the supply voltage value between the positive contactor output and the negative contactor output The difference is less than the specified voltage threshold, and it is determined that the positive contactor and the negative contactor in the power supply circuit of the power supply device are not stuck.
  • the power supply voltage at the output end of the contactor increases rampage during the voltage rise of the power supply device, that is, the last time
  • the detected supply voltage at the output of the contactor is less than the supply voltage at the output of the contactor detected next time, and as the voltage rises, the supply voltage of the last detected contactor output is contacted with the next detected contact.
  • the difference in supply voltage at the output of the device will be larger and larger.
  • the specified voltage threshold can be set to 10V, if between at least two of the two adjacent detection power supply circuits of the power supply circuit between the positive contactor output and the negative contactor output If the difference between the supply voltage values is greater than or equal to 10V, it is determined that the positive contactor and the negative contactor in the power supply circuit of the power supply device are stuck; if at least two of the two adjacent power supply devices are detected The difference between the supply voltage values between the positive contactor output and the negative contactor output is less than 10V, and it is determined that the positive contactor and the negative contactor in the power supply circuit of the power supply device are not stuck.
  • the difference between the supply voltage values between the positive contactor output and the negative contactor output in the power supply loop is greater than or equal to a specified voltage threshold, when the positive contactor output in the power supply loop of the power supply device is at least twice The difference between the supply voltage values between the output terminals of the negative contactor is greater than or equal to the specified voltage threshold, determining that the positive contactor and the negative contactor in the power supply circuit of the power supply device are stuck; when at least two power supply circuits of the power supply device are in the power supply circuit The difference between the supply voltage values between the positive contactor output and the negative contactor output is less than a specified voltage threshold, and it is determined that the positive contactor and the negative contactor in the power supply circuit of the power supply device are not stuck.
  • the specific number of judgments can be set according to actual needs.
  • the contactor in the power supply circuit of the power supply device is stuck, in order to prevent the power supply device from pulling the voltage to the power supply voltage value, the battery management system is affected, and the battery management system is charged.
  • the contactor in the loop also is stuck, and it is necessary to send an indication to the power supply device for instructing the power supply device to stop supplying power.
  • the power supply device can be a power supply device.
  • the power supply device before the power supply device is required to provide power, the power supply device needs to generate indication information for indicating that the power supply device performs power supply, wherein the indication information carries a power supply voltage value, and then the power supply device is detected according to the power supply device.
  • the supply voltage value pulls up the voltage during the voltage supply process.
  • the contactor in the power supply circuit of the power supply device that does not cause the adhesion does not close, and thus the power supply of the power supply device
  • the output of the contactor in the loop does not output a voltage
  • the contactor in the power supply device in which the blocking occurs is in a closed state, so that the output of the contactor in the power supply circuit of the power supply device can output a voltage, so the power supply device
  • the value of the power supply voltage detected when the contactor in the power supply circuit is stuck and the value of the power supply voltage detected when the contactor in the power supply circuit of the power supply device is not stuck is different, so the value of the detected power supply voltage can be judged according to the detected power supply voltage value.
  • the detected power supply voltage value used is a power supply voltage in a process in which the power supply device pulls up the voltage according to the power supply voltage value, that is, the power supply device is in accordance with the power supply voltage. During the process of pulling up the voltage, it is detected whether the contactor in the power supply circuit of the power supply device is stuck. Since the output voltage of the power supply device has not reached the value of the power supply voltage carried in the indication information, the battery management system cannot be charged.
  • the contactor in the circuit is closed, so the output voltage of the power supply device cannot cause the contactor in the charging circuit of the battery management system to be stuck, thereby determining the supply of the power supply device In the process of whether the contactor in the electrical circuit is stuck, the safety of the battery management system is not threatened, thereby further improving the safety of the battery management system.
  • a contactor adhesion detection method provided by an embodiment of the present application is applied to a battery management system, wherein the battery management system is connected to a charging post through a charging interface, and the method may include the following steps. :
  • the battery management system can send a communication handshake message to the charging post, and after receiving the communication handshake message, the charging pile can follow the communication handshake message.
  • the supply voltage value pulls up the voltage and pulls the voltage up to the supply voltage value to charge the battery pack in the battery management system.
  • the communication handshake message carrying the supply voltage value may be sent to the charging post by: determining the supply voltage value according to the charging voltage of the battery pack in the battery management system; The power supply voltage value is encapsulated into the communication handshake message; the communication handshake message is sent to the charging stub.
  • the charging pile when the charging pile is charging the battery pack in the battery management system, it is required to provide electric energy according to the charging voltage of the battery pack, so that the battery pack can be ensured under the premise of ensuring rapid charging of the battery pack.
  • Security so before the supply voltage value is encapsulated into the communication handshake message, it is necessary to determine the charging voltage of the battery pack, and then determine the charging voltage as the supply voltage value, and package it into the communication handshake message, and The communication handshake message is sent to the charging post.
  • the battery management system and the charging post are connected through the charging interface, when it is determined that the contactor in the power supply circuit of the charging post does not cause adhesion, and the charging post pulls the voltage to the supply voltage value, the battery pack in the battery management system can be directly charged to quickly charge the battery pack in the battery management system.
  • the charging pile parses the communication handshake message, obtains a power supply voltage value in the communication handshake message, and then supplies the charging voltage of the charging pile according to the power supply voltage value. Pulling up from 0V until the supply voltage is pulled up to the supply voltage value, after the supply voltage is pulled up to the supply voltage value, the contactor in the power supply circuit of the charging post is closed. Then start charging the battery pack in the battery management system.
  • the contactor in the power supply circuit of the charging post that does not stick together does not close, so the output end of the contactor in the power supply circuit of the charging post does not output voltage, and
  • the contactor in the charging pile in which the adhesion occurs is in a closed state, so that the output end of the contactor in the power supply circuit of the charging post can output a voltage, and thus the supply voltage detected when the contactor in the power supply circuit of the charging post is stuck
  • the value of the supply voltage detected when the value does not adhere to the contactor in the power supply circuit of the charging post is different.
  • the value of the power supply voltage detected when the contactor in the power supply circuit of the charging post is not stuck is 0V
  • the value of the power supply voltage detected when the contactor in the power supply circuit of the charging post is stuck is greater than 0V, and Less than or equal to the supply voltage of the charging post.
  • the contactor in the charging circuit of the battery management system is only after the charging post pulls the supply voltage to the supply voltage value in the communication handshake message. Will close, that is, in the process of charging the voltage according to the supply voltage value, the contactor in the charging circuit of the battery management system will not be closed, so whether the contactor in the power supply circuit of the charging pile is stuck or not, the battery There is no current generated in the charging circuit of the management system.
  • the precondition for the contact of the contactor is that the contactor is in a closed state and a large current is passed, so that the charging circuit of the battery management system is not caused in the above process.
  • the contactor in the middle of the contact is stuck. Therefore, by detecting the supply voltage in the process to determine whether the contactor in the power supply circuit of the charging post is stuck, no matter whether the contactor in the power supply circuit of the charging post is stuck or not, Threats to the security of battery management systems.
  • the detection may be performed by detecting The value of the power supply voltage to determine the contact in the power supply circuit of the charging post Whether the device is stuck.
  • the device and the negative contactor are stuck; if at least two of the two adjacent charging piles, the difference between the supply voltage values of the positive contactor output and the negative contactor output is less than A voltage threshold is specified to determine that the positive and negative contactors in the power supply loop of the charging post are not stuck.
  • the power supply voltage at the output end of the contactor increases in a climbing manner during the charging of the charging pile, that is, the last time
  • the detected supply voltage at the output of the contactor is less than the supply voltage at the output of the contactor detected next time, and as the voltage pull-up time increases, the supply voltage of the last detected contactor output is contacted with the next detected contact.
  • the difference in supply voltage at the output of the device will be larger and larger.
  • the specified voltage threshold can be set to 10V, if at least two of the two adjacent two detected charging stubs in the power supply loop between the positive contactor output and the negative contactor output If the difference between the supply voltage values is greater than or equal to 10V, it is determined that the positive contactor and the negative contactor in the power supply loop of the charging post are stuck; if at least two of the adjacent two detected charging piles are supplied The difference between the supply voltage values between the positive contactor output and the negative contactor output is less than 10V, and it is determined that the positive contactor and the negative contactor in the power supply loop of the charging post are not stuck.
  • the threshold value is determined when the difference between the supply voltage values between the positive contactor output terminal and the negative contactor output terminal in the power supply loop of the at least two charging piles is greater than or equal to a specified voltage threshold, and the positive pole in the power supply loop of the charging post is determined.
  • the contactor and the negative contactor are stuck; when the difference between the supply voltage values between the positive contactor output and the negative contactor output in the power supply loop of the at least two charging piles is less than a specified voltage threshold, determining the charging pile Power supply loop
  • the positive contactor and the negative contactor did not stick.
  • the specific number of judgments can be set according to actual needs.
  • the contactor in the power supply circuit of the charging post is stuck, in order to prevent the charging post from pulling the voltage to the supply voltage value, the battery management system is affected, and the battery management system is charged.
  • the contactor in the loop also sticks, and it is necessary to send an indication to the charging post for instructing the charging post to stop supplying power.
  • the communication handshake message carrying the supply voltage value needs to be sent to the charging post, and then the supply voltage in the process of pulling the voltage according to the supply voltage value is detected.
  • the contactor in the power supply circuit of the charging pile that does not stick to the charging pile is not closed, and the output end of the contactor in the power supply circuit of the charging pile does not output a voltage.
  • the contactor in the charging pile in which the adhesion occurs is in a closed state, so that the output end of the contactor in the power supply circuit of the charging post can output a voltage, and thus the power supply detected when the contactor in the power supply circuit of the charging post is stuck.
  • the voltage value is different from the value of the power supply voltage detected when the contactor in the power supply circuit of the charging post is not stuck. Therefore, it can be determined whether the contactor in the power supply circuit of the charging post is stuck according to the detected power supply voltage value. , thereby improving the security of the battery management system.
  • the detected power supply voltage value used is a power supply voltage in a process in which the charging pile pulls up the voltage according to the power supply voltage value, that is, the charging pile is in accordance with the power supply voltage. During the process of pulling up the voltage, it is detected whether the contactor in the power supply circuit of the charging post is stuck.
  • the output voltage of the charging post has not reached the value of the power supply voltage carried in the communication handshake message, and cannot be made in the battery management system.
  • the contactor in the charging circuit is closed, so the output voltage of the charging post cannot cause the contactor in the charging circuit of the battery management system to be stuck, and in the process of determining whether the contactor in the power supply circuit of the charging post is stuck, It does not pose a threat to the safety of the battery management system, thus further improving the security of the battery management system.
  • a connection diagram of a battery management system and a charging post provided by an embodiment of the present application is provided, where K1 And K2 are respectively a positive contactor and a negative contactor in the charging pile power supply circuit, and K3 and K4 are a positive contactor and a negative contactor respectively in the charging circuit of the battery management system, and the contactor adhesion detecting method may include the following steps:
  • the battery management system determines the supply voltage value according to the charging voltage of the battery pack.
  • the battery management system encapsulates the supply voltage value into a communication handshake message.
  • the battery management system sends the communication handshake message to the charging pile.
  • the charging post pulls up the voltage according to the value of the power supply voltage in the communication handshake message.
  • the battery management system detects the voltage of the K3 input terminal and the K4 input terminal four times.
  • the voltages at U7 and U6 are detected.
  • the embodiment of the present application further provides an apparatus embodiment for implementing the steps and methods in the foregoing method embodiments.
  • a contactor adhesion detecting device includes: a transmitting unit 41, configured to send, to the power supply device, indication information for instructing the power supply device to supply power, where The indication information carries a supply voltage value; the detecting unit 42 is configured to detect a power supply voltage in the process of pulling the voltage according to the power supply voltage value; and the determining unit 43 is configured to use the detected power supply voltage And determining whether the contactor in the power supply circuit of the power supply device is stuck.
  • the sending unit 41 is specifically configured to: determine the power supply voltage value according to a charging voltage of a battery to be charged; and package the power supply voltage value into the indication letter And transmitting the indication information to the power supply device.
  • the detecting unit 42 is configured to: detect, in the process of pulling the voltage according to the power supply voltage value, the contact in the power supply circuit of the power supply device at least twice The supply voltage at the output of the device.
  • the detecting unit 42 is specifically configured to: detect a supply voltage between the positive contactor output and the negative contactor output in the power supply circuit of the power supply device at least twice.
  • the determining unit 43 is specifically configured to: determine a positive contactor output terminal and a negative contactor in a power supply loop of any two adjacent power supply devices that are detected at least twice Whether the difference between the supply voltage values between the output terminals is greater than or equal to the specified voltage threshold; if any two of the detected at least two of the power supply circuits of the power supply device are in contact with the negative electrode contact The difference between the supply voltage values between the output ends of the device is greater than or equal to the specified voltage threshold, determining that the positive contactor and the negative contactor in the power supply circuit of the power supply device are stuck; if any of the detected at least two The difference between the supply voltage values between the output of the positive contactor and the output of the negative contactor in the power supply circuit of the power supply device is less than a specified voltage threshold, and the positive contactor in the power supply circuit of the power supply device is determined. No adhesion occurred to the negative contactor.
  • the sending unit 41 is further configured to: if it is determined that the contactor in the power supply circuit of the power supply device is stuck, send the power supply device to instruct the power supply device to stop supplying power. Instructions.
  • the power supply device includes a charging post.
  • the power supply device before the power supply device is required to provide power, the power supply device needs to generate indication information for indicating that the power supply device performs power supply, wherein the indication information carries a power supply voltage value, and then the power supply device is detected according to the power supply device.
  • the supply voltage value pulls up the voltage during the voltage supply process.
  • the contactor in the power supply circuit of the power supply device that does not cause the adhesion does not close, and thus the power supply of the power supply device
  • the output of the contactor in the loop does not output a voltage, and the contactor in the power supply device that is stuck is closed, so that the output of the contactor in the power supply circuit of the power supply device can output a voltage, so the power supply
  • the value of the power supply voltage detected when the contactor in the power supply circuit is stuck and the value of the power supply voltage detected when the contactor in the power supply circuit of the power supply device is not stuck is different, and therefore, according to the detected power supply voltage value, It is judged whether the contactor in the power supply circuit of the power supply device is stuck, thereby improving the safety of the battery management system.
  • the detected power supply voltage value used is a power supply voltage in a process in which the power supply device pulls up the voltage according to the power supply voltage value, that is, the power supply device is in accordance with the power supply voltage. During the process of pulling up the voltage, it is detected whether the contactor in the power supply circuit of the power supply device is stuck. Since the output voltage of the power supply device has not reached the value of the power supply voltage carried in the indication information, the battery management system cannot be charged.
  • the contactor in the circuit is closed, so the output voltage of the power supply device cannot cause the contactor in the charging circuit of the battery management system to be stuck, and in the process of determining whether the contactor in the power supply circuit of the power supply device is stuck, It poses a threat to the security of the battery management system, thus further improving the security of the battery management system.
  • the embodiment of the present application provides a battery management system, where the battery management system includes: a sending unit 51, configured to send a communication handshake message carrying a power supply voltage value to a charging post; and the detecting unit 52 uses The detecting unit 53 is configured to determine whether the contactor in the power supply circuit of the charging post occurs according to the detected power supply voltage value. Sticky.
  • the sending unit 51 is specifically configured to: determine the power supply voltage value according to a charging voltage of a battery pack in the battery management system; and package the power supply voltage value into the communication In the handshake message, the communication handshake message is sent to the charging stub.
  • the detecting unit 52 is configured to: detect the positive electrode in the charging circuit of the battery management system at least twice during the charging of the charging pile according to the supply voltage value. a supply voltage between the contactor input and the negative contactor input; the supply voltage between the positive contactor input and the negative contactor input in the charging circuit of the battery management system will be detected at least twice as a corresponding supply voltage between the output of the positive contactor and the output of the negative contactor in the power supply circuit of the charging post.
  • the determining unit 53 is specifically configured to: determine a positive contactor output end and a negative contactor output end in a power supply loop of any two adjacent charging stubs at least twice Whether the difference between the corresponding supply voltage values is greater than or equal to the specified voltage threshold; Determining the difference between the corresponding supply voltage values between the positive contactor output end and the negative contactor output end in the power supply loop of any two adjacent charging stubs at least twice The positive contactor and the negative contactor in the power supply circuit of the charging post are stuck; if at least two of the two adjacent charging piles are connected between the positive contactor output and the negative contactor output The difference between the corresponding supply voltage values is less than the specified voltage threshold, and it is determined that the positive contactor and the negative contactor in the power supply loop of the charging post are not stuck.
  • the sending unit 51 is further configured to: if it is determined that the contactor in the power supply circuit of the charging post is stuck, send the charging post to instruct the charging pile to stop supplying power. Instructions.
  • the communication handshake message carrying the supply voltage value needs to be sent to the charging post, and then the supply voltage in the process of pulling the voltage according to the supply voltage value is detected.
  • the contactor in the power supply circuit of the charging pile that does not stick to the charging pile is not closed, and the output end of the contactor in the power supply circuit of the charging pile does not output a voltage.
  • the contactor in the charging pile in which the adhesion occurs is in a closed state, so that the output end of the contactor in the power supply circuit of the charging post can output a voltage, and thus the power supply detected when the contactor in the power supply circuit of the charging post is stuck.
  • the voltage value is different from the value of the power supply voltage detected when the contactor in the power supply circuit of the charging post is not stuck. Therefore, it can be determined whether the contactor in the power supply circuit of the charging post is stuck according to the detected power supply voltage value. , thereby improving the security of the battery management system.
  • the detected power supply voltage value used is a power supply voltage in a process in which the charging pile pulls up the voltage according to the power supply voltage value, that is, the charging pile is in accordance with the power supply voltage. During the process of pulling up the voltage, it is detected whether the contactor in the power supply circuit of the charging post is stuck.
  • the output voltage of the charging post has not reached the value of the power supply voltage carried in the communication handshake message, and cannot be made in the battery management system.
  • the contactor in the charging circuit is closed, so the output voltage of the charging post cannot cause the contactor in the charging circuit of the battery management system to be stuck, and in the process of determining whether the contactor in the power supply circuit of the charging post is stuck, It does not pose a threat to the safety of the battery management system, thus further improving the security of the battery management system.
  • the disclosed system, apparatus, and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • multiple units or components may be combined.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.
  • the above-described integrated unit implemented in the form of a software functional unit can be stored in a computer readable storage medium.
  • the software functional unit is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to perform the methods of the various embodiments of the present application. Part of the steps.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. .

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Abstract

一种接触器粘连检测方法、检测装置和电池管理系统,该方法包括：向供电装置发送用于指示所述供电装置进行供电的指示信息，其中，所述指示信息中携带有供电电压值（101）；检测所述供电装置按照所述供电电压值拉升电压的过程中的供电电压（102）；根据检测到的供电电压值，判断所述供电装置的供电回路中的接触器是否发生粘连（103）。该方法由于在供电装置按照供电电压值拉升电压的过程中，检测供电装置的供电回路中的接触器是否发生粘连，因此提高了电池管理系统的安全性。

Description

一种电池短路的检测方法和装置
本申请要求于2017年01月23日提交中国专利局、申请号为CN201710058485.3、发明名称为“一种接触器粘连检测方法、检测装置和电池管理系统”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及接触器检测技术领域，尤其涉及一种接触器粘连检测方法、检测装置和电池管理系统。
背景技术
在供电装置的供电回路中的接触器发生粘连的情况下，使用该供电装置为电池管理系统中的电池充电，如在充电桩的供电回路中的接触器发生粘连的情况下，使用该充电桩为电池管理系统中的电池充电，会导致电池管理系统中充电回路中的接触器也发生粘连，因此，在不能确定供电装置的供电回路中的接触器是否发生粘连的情况下，使用该供电装置为电池管理系统中的电池充电，该电池管理系统的安全性较低。
发明内容
有鉴于此，本申请实施例提供了一种接触器粘连检测方法、检测装置和电池管理系统，用以解决现有技术中电池管理系统安全性较低的问题。
第一方面，本申请实施例提供了一种接触器粘连检测方法，所述方法包括：
向供电装置发送用于指示所述供电装置进行供电的指示信息，其中，所述指示信息中携带有供电电压值；
检测所述供电装置按照所述供电电压值拉升电压的过程中的供电电压；
根据检测到的供电电压值，判断所述供电装置的供电回路中的接触器是否发生粘连。
如上所述的方面和任一可能的实现方式，进一步提供一种实现方式，所述向供电装置发送用于指示所述供电装置进行供电的指示信息的步骤，包括：
根据待充电电池的充电电压，确定所述供电电压值；
将所述供电电压值封装到所述指示信息中；
将所述指示信息发送给所述供电装置。
如上所述的方面和任一可能的实现方式，进一步提供一种实现方式，所述检测所述供电装置按照所述供电电压值拉升电压的过程中的供电电压的步骤，包括：
在所述供电装置按照所述供电电压值拉升电压的过程中，检测至少两次所述供电装置的供电回路中的接触器输出端的供电电压。
如上所述的方面和任一可能的实现方式，进一步提供一种实现方式，所述检测至少两次所述供电装置的供电回路中的接触器输出端的供电电压的步骤，包括：
检测至少两次所述供电装置的供电回路中的正极接触器输出端和负极接触器输出端之间的供电电压。
如上所述的方面和任一可能的实现方式，进一步提供一种实现方式，所述根据检测到的供电电压值，判断所述供电装置的供电回路中的接触器是否发生粘连的步骤，包括：
判断检测到的至少两次中的任意相邻两次所述供电装置的供电回路中的正极接触器输出端和负极接触器输出端之间的供电电压值之差是否均大于或者等于指定电压阈值；
若检测到的至少两次中的任意相邻两次所述供电装置的供电回路中的正极接触器输出端和负极接触器输出端之间的供电电压值之差均大于或者等于指定电压阈值，确定所述供电装置的供电回路中的正极接触器和负极接触器发生粘连；
若检测到的至少两次中的任意相邻两次所述供电装置的供电回路中的正极接触器输出端和负极接触器输出端之间的供电电压值之差均小于指定电压阈值，确定所述供电装置的供电回路中的正极接触器和负极接触器未发生粘连。
如上所述的方面和任一可能的实现方式，进一步提供一种实现方式，还包括：
若确定所述供电装置的供电回路中的接触器发生粘连，向所述供电装置 发送用于指示所述供电装置停止供电的指示信息。
如上所述的方面和任一可能的实现方式，进一步提供一种实现方式，所述供电装置包括充电桩。
上述技术方案中的一个技术方案具有如下有益效果：
在本申请实施例中，当需要供电装置提供电能之前，需要向该供电装置发生用于指示该供电装置进行供电的指示信息，其中，指示信息中携带有供电电压值，然后检测该供电装置按照所述供电电压值拉升电压过程中的供电电压，由于供电装置按照供电电压值拉升电压的过程中，未发生粘连的供电装置的供电回路中的接触器不会闭合，因而供电装置的供电回路中的接触器的输出端不会输出电压，而发生粘连的供电装置中的接触器会处于闭合状态，因而供电装置的供电回路中的接触器的输出端能够输出电压，因此该供电装置的供电回路中的接触器发生粘连时检测到的供电电压值和该供电装置的供电回路中的接触器未发生粘连时检测到的供电电压值不同，因此可以根据检测到的供电电压值，判断所述供电装置的供电回路中的接触器是否发生粘连，进而提高了电池管理系统的安全性。并且，由于判断供电装置的供电回路中的接触器是否发生粘连时，使用的检测到的供电电压值是供电装置按照供电电压值拉升电压的过程中的供电电压，即在供电装置按照供电电压值拉升电压的过程中，检测供电装置的供电回路中的接触器是否发生粘连，由于此时供电装置的输出电压还未达到指示信息中携带的供电电压值，不能使电池管理系统中的充电回路中的接触器闭合，因此该供电装置的输出电压不能使电池管理系统的充电回路中的接触器发生粘连，进而在上述判断供电装置的供电回路中的接触器是否发生粘连的过程中，不会对电池管理系统的安全性造成威胁，因此又进一步提高了电池管理系统的安全性。
第二方面，本申请实施例提供了一种接触器粘连检测装置，所述装置包括：
发送单元，用于向供电装置发送用于指示所述供电装置进行供电的指示信息，其中，所述指示信息中携带有供电电压值；
检测单元，用于检测所述供电装置按照所述供电电压值拉升电压的过程中的供电电压；
判断单元，用于根据检测到的供电电压值，判断所述供电装置的供电回路中的接触器是否发生粘连。
如上所述的方面和任一可能的实现方式，进一步提供一种实现方式，所述发送单元，具体用于：
根据待充电电池的充电电压，确定所述供电电压值；
将所述供电电压值封装到所述指示信息中；
将所述指示信息发送给所述供电装置。
如上所述的方面和任一可能的实现方式，进一步提供一种实现方式，所述检测单元，具体用于：
在所述供电装置按照所述供电电压值拉升电压的过程中，检测至少两次所述供电装置的供电回路中的接触器输出端的供电电压。
如上所述的方面和任一可能的实现方式，进一步提供一种实现方式，所述检测单元，具体用于：
检测至少两次所述供电装置的供电回路中的正极接触器输出端和负极接触器输出端之间的供电电压。
如上所述的方面和任一可能的实现方式，进一步提供一种实现方式，所述判断单元，具体用于：
判断检测到的至少两次中的任意相邻两次所述供电装置的供电回路中的正极接触器输出端和负极接触器输出端之间的供电电压值之差是否均大于或者等于指定电压阈值；
若检测到的至少两次中的任意相邻两次所述供电装置的供电回路中的正极接触器输出端和负极接触器输出端之间的供电电压值之差均大于或者等于指定电压阈值，确定所述供电装置的供电回路中的正极接触器和负极接触器发生粘连；
若检测到的至少两次中的任意相邻两次所述供电装置的供电回路中的正极接触器输出端和负极接触器输出端之间的供电电压值之差均小于指定电压阈值，确定所述供电装置的供电回路中的正极接触器和负极接触器未发生粘连。
如上所述的方面和任一可能的实现方式，进一步提供一种实现方式，所述发送单元，还用于：
若确定所述供电装置的供电回路中的接触器发生粘连，向所述供电装置发送用于指示所述供电装置停止供电的指示信息。
如上所述的方面和任一可能的实现方式，进一步提供一种实现方式，所述供电装置包括充电桩。
上述技术方案中的一个技术方案具有如下有益效果：
在本申请实施例中，当需要供电装置提供电能之前，需要向该供电装置发生用于指示该供电装置进行供电的指示信息，其中，指示信息中携带有供电电压值，然后检测该供电装置按照所述供电电压值拉升电压过程中的供电电压，由于供电装置按照供电电压值拉升电压的过程中，未发生粘连的供电装置的供电回路中的接触器不会闭合，因而供电装置的供电回路中的接触器的输出端不会输出电压，而发生粘连的供电装置中的接触器会处于闭合状态，因而供电装置的供电回路中的接触器的输出端能够输出电压，因此该供电装置的供电回路中的接触器发生粘连时检测到的供电电压值和该供电装置的供电回路中的接触器未发生粘连时检测到的供电电压值不同，因此可以根据检测到的供电电压值，判断所述供电装置的供电回路中的接触器是否发生粘连，进而提高了电池管理系统的安全性。并且，由于判断供电装置的供电回路中的接触器是否发生粘连时，使用的检测到的供电电压值是供电装置按照供电电压值拉升电压的过程中的供电电压，即在供电装置按照供电电压值拉升电压的过程中，检测供电装置的供电回路中的接触器是否发生粘连，由于此时供电装置的输出电压还未达到指示信息中携带的供电电压值，不能使电池管理系统中的充电回路中的接触器闭合，因此该供电装置的输出电压不能使电池管理系统的充电回路中的接触器发生粘连，进而在上述判断供电装置的供电回路中的接触器是否发生粘连的过程中，不会对电池管理系统的安全性造成威胁，因此又进一步提高了电池管理系统的安全性。
第三方面，本申请实施例提供了一种接触器粘连检测方法，所述方法应用于电池管理系统中，所述方法包括：
向充电桩发送携带有供电电压值的通讯握手报文；
检测所述充电桩按照所述供电电压值拉升电压的过程中的供电电压；
根据检测到的供电电压值，判断所述充电桩的供电回路中的接触器是否发生粘连。
如上所述的方面和任一可能的实现方式，进一步提供一种实现方式，所述向充电桩发送携带有供电电压值的通讯握手报文的步骤，包括：
根据所述电池管理系统中的电池组的充电电压，确定所述供电电压值；
将所述供电电压值封装到所述通讯握手报文中；
将所述通讯握手报文发送给所述充电桩。
如上所述的方面和任一可能的实现方式，进一步提供一种实现方式，所述检测所述充电桩按照所述供电电压值拉升电压的过程中的供电电压的步骤，包括：
在所述充电桩按照所述供电电压值拉升电压的过程中，检测至少两次所述电池管理系统的充电回路中正极接触器输入端和负极接触器输入端之间的供电电压；
将检测到的至少两次所述电池管理系统的充电回路中正极接触器输入端和负极接触器输入端之间的供电电压，作为所述充电桩的供电回路中的正极接触器输出端和负极接触器输出端之间对应的供电电压。
如上所述的方面和任一可能的实现方式，进一步提供一种实现方式，所述根据检测到的供电电压值，判断所述充电桩的供电回路中的接触器是否发生粘连的步骤，包括：
判断至少两次中的任意相邻两次所述充电桩的供电回路中的正极接触器输出端和负极接触器输出端之间对应的供电电压值之差是否均大于或者等于指定电压阈值；
若至少两次中的任意相邻两次所述充电桩的供电回路中的正极接触器输出端和负极接触器输出端之间对应的供电电压值之差均大于或者等于指定电压阈值，确定所述充电桩的供电回路中的正极接触器和负极接触器发生粘连；
若至少两次中的任意相邻两次所述充电桩的供电回路中的正极接触器输出端和负极接触器输出端之间对应的供电电压值之差均小于指定电压阈值，确定所述充电桩的供电回路中的正极接触器和负极接触器未发生粘连。
如上所述的方面和任一可能的实现方式，进一步提供一种实现方式，还包括：
若确定所述充电桩的供电回路中的接触器发生粘连，向所述充电桩发送用于指示所述充电桩停止供电的指示信息。
上述技术方案中的一个技术方案具有如下有益效果：
在本申请实施例中，当需要充电桩提供电能之前，需要向充电桩发送携带有供电电压值的通讯握手报文，然后检测该充电桩按照所述供电电压值拉升电压过程中的供电电压，由于充电桩按照供电电压值拉升电压的过程中，未发生粘连的充电桩的供电回路中的接触器不会闭合，因而充电桩的供电回路中的接触器的输出端不会输出电压，而发生粘连的充电桩中的接触器会处于闭合状态，因而充电桩的供电回路中的接触器的输出端能够输出电压，因此该充电桩的供电回路中的接触器发生粘连时检测到的供电电压值和该充电桩的供电回路中的接触器未发生粘连时检测到的供电电压值不同，因此可以根据检测到的供电电压值，判断所述充电桩的供电回路中的接触器是否发生粘连，进而提高了电池管理系统的安全性。并且，由于判断充电桩的供电回路中的接触器是否发生粘连时，使用的检测到的供电电压值是充电桩按照供电电压值拉升电压的过程中的供电电压，即在充电桩按照供电电压值拉升电压的过程中，检测充电桩的供电回路中的接触器是否发生粘连，此时充电桩的输出电压还未达到通讯握手报文中携带的供电电压值，不能使电池管理系统中的充电回路中的接触器闭合，因此该充电桩的输出电压不能使电池管理系统的充电回路中的接触器发生粘连，进而在上述判断充电桩的供电回路中的接触器是否发生粘连的过程中，不会对电池管理系统的安全性造成威胁，因此又进一步提高了电池管理系统的安全性。
第四方面，本申请实施例提供了一种电池管理系统，所述电池管理系统包括：
发送单元，用于向充电桩发送携带有供电电压值的通讯握手报文；
检测单元，用于检测所述充电桩按照所述供电电压值拉升电压的过程中的供电电压；
判断单元，用于根据检测到的供电电压值，判断所述充电桩的供电回路中的接触器是否发生粘连。
如上所述的方面和任一可能的实现方式，进一步提供一种实现方式，所述发送单元，具体用于：
根据所述电池管理系统中的电池组的充电电压，确定所述供电电压值；
将所述供电电压值封装到所述通讯握手报文中；
将所述通讯握手报文发送给所述充电桩。
如上所述的方面和任一可能的实现方式，进一步提供一种实现方式，所述检测单元，具体用于：
在所述充电桩按照所述供电电压值拉升电压的过程中，检测至少两次所述电池管理系统的充电回路中正极接触器输入端和负极接触器输入端之间的供电电压；
将检测到的至少两次所述电池管理系统的充电回路中正极接触器输入端和负极接触器输入端之间的供电电压，作为所述充电桩的供电回路中的正极接触器输出端和负极接触器输出端之间对应的供电电压。
如上所述的方面和任一可能的实现方式，进一步提供一种实现方式，所述判断单元，具体用于：
判断至少两次中的任意相邻两次所述充电桩的供电回路中的正极接触器输出端和负极接触器输出端之间对应的供电电压值之差是否均大于或者等于指定电压阈值；
若至少两次中的任意相邻两次所述充电桩的供电回路中的正极接触器输出端和负极接触器输出端之间对应的供电电压值之差均大于或者等于指定电压阈值，确定所述充电桩的供电回路中的正极接触器和负极接触器发生粘连；
若至少两次中的任意相邻两次所述充电桩的供电回路中的正极接触器输出端和负极接触器输出端之间对应的供电电压值之差均小于指定电压阈值，确定所述充电桩的供电回路中的正极接触器和负极接触器未发生粘连。
如上所述的方面和任一可能的实现方式，进一步提供一种实现方式，所述发送单元，还用于：
若确定所述充电桩的供电回路中的接触器发生粘连，向所述充电桩发送用于指示所述充电桩停止供电的指示信息。
上述技术方案中的一个技术方案具有如下有益效果：
在本申请实施例中，当需要充电桩提供电能之前，需要向充电桩发送携带有供电电压值的通讯握手报文，然后检测该充电桩按照所述供电电压值拉升电压过程中的供电电压，由于充电桩按照供电电压值拉升电压的过程中，未发生粘连的充电桩的供电回路中的接触器不会闭合，因而充电桩的供电回路中的接触器的输出端不会输出电压，而发生粘连的充电桩中的接触器会处 于闭合状态，因而充电桩的供电回路中的接触器的输出端能够输出电压，因此该充电桩的供电回路中的接触器发生粘连时检测到的供电电压值和该充电桩的供电回路中的接触器未发生粘连时检测到的供电电压值不同，因此可以根据检测到的供电电压值，判断所述充电桩的供电回路中的接触器是否发生粘连，进而提高了电池管理系统的安全性。并且，由于判断充电桩的供电回路中的接触器是否发生粘连时，使用的检测到的供电电压值是充电桩按照供电电压值拉升电压的过程中的供电电压，即在充电桩按照供电电压值拉升电压的过程中，检测充电桩的供电回路中的接触器是否发生粘连，此时充电桩的输出电压还未达到通讯握手报文中携带的供电电压值，不能使电池管理系统中的充电回路中的接触器闭合，因此该充电桩的输出电压不能使电池管理系统的充电回路中的接触器发生粘连，进而在上述判断充电桩的供电回路中的接触器是否发生粘连的过程中，不会对电池管理系统的安全性造成威胁，因此又进一步提高了电池管理系统的安全性。
附图说明
为了更清楚地说明本申请实施例的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其它的附图。
图1是本申请实施例提供的一种接触器粘连检测方法的流程示意图；
图2是本申请实施例提供的另一种接触器粘连检测方法的流程示意图；
图3是本申请实施例提供的一种充电桩和电池管理系统的连接示意图；
图4是本申请实施例提供的一种接触器粘连检测装置的结构示意图；
图5是本申请实施例提供的一种电池管理系统的结构示意图。
具体实施方式
为了更好的理解本申请的技术方案，下面结合附图对本申请实施例进行详细描述。
应当明确，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳 动前提下所获得的所有其它实施例，都属于本申请保护的范围。
在本申请实施例中使用的术语是仅仅出于描述特定实施例的目的，而非旨在限制本申请。在本申请实施例和所附权利要求书中所使用的单数形式的“一种”、“所述”和“该”也旨在包括多数形式，除非上下文清楚地表示其他含义。
取决于语境，如在此所使用的词语“如果”可以被解释成为“在……时”或“当……时”或“响应于确定”或“响应于检测”。类似地，取决于语境，短语“如果确定”或“如果检测(陈述的条件或事件)”可以被解释成为“当确定时”或“响应于确定”或“当检测(陈述的条件或事件)时”或“响应于检测(陈述的条件或事件)”。
针对现有技术中充电桩的供电回路中的接触器在发生粘连的情况下，使用该充电桩为电池管理系统中的电池充电时，会导致电池管理系统中充电回路中的接触器也发生粘连，造成电池管理系统的安全性较低的问题，本申请实施例提供了相应的解决思路：在使用充电桩为电池管理系统中的电池进行充电之前，检测充电桩的供电回路中的接触器是否发生粘连，从而提高电池管理系统的安全性。
在上述思路的引导下，在本申请实施例中，当需要充电桩提供电能之前，需要向该充电桩发生用于指示该充电桩进行供电的指示信息，其中，指示信息中携带有供电电压值，然后检测该充电桩按照所述供电电压值拉升电压过程中的供电电压，由于供电装置按照供电电压值拉升电压的过程中，未发生粘连的供电装置的供电回路中的接触器不会闭合，因而供电装置的供电回路中的接触器的输出端不会输出电压，而发生粘连的供电装置中的接触器会处于闭合状态，因而供电装置的供电回路中的接触器的输出端能够输出电压，因此该充电桩的供电回路中的接触器发生粘连时检测到的供电电压值和该充电桩的供电回路中的接触器未发生粘连时检测到的供电电压值不同，因此可以根据检测到的供电电压值，判断所述充电桩的供电回路中的接触器是否发生粘连，进而提高了电池管理系统的安全性。并且，由于判断充电桩的供电回路中的接触器是否发生粘连时，使用的检测到的供电电压值是充电桩按照供电电压值拉升电压的过程中的供电电压，即在充电桩按照供电电压值拉升电压的过程中，检测充电桩的供电回路中的接触器是否发生粘连，由于此时 充电桩的输出电压还未达到指示信息中携带的供电电压值，不能使电池管理系统中的充电回路中的接触器闭合，因此该充电桩的输出电压不能使电池管理系统的充电回路中的接触器发生粘连，进而在上述判断充电桩的供电回路中的接触器是否发生粘连的过程中，不会对电池管理系统的安全性造成威胁，因此又进一步提高了电池管理系统的安全性。
下面对可行的实现方案进行详细阐述。
实施例一
如图1所示，为本申请实施例提供的一种接触器粘连检测方法，该方法可以包括以下步骤：
101、向供电装置发送用于指示所述供电装置进行供电的指示信息，其中，所述指示信息中携带有供电电压值。
在一个可行的实施方案中，可以通过下述步骤向供电装置发送用于指示所述供电装置进行供电的指示信息：根据待充电电池的充电电压，确定所述供电电压值；将所述供电电压值封装到所述指示信息中；将所述指示信息发送给所述供电装置。
具体的，在供电装置为待充电电池进行充电时，需要根据该待充电电池的充电电压提供电能，这样可以在保证快速为待充电电池进行充电的前提下，还可以保证待充电电池的安全性，因此在将供电电压值封装到指示信息之前，需要确定出待充电电池的充电电压，然后将该充电电压确定为供电电压值，并封装到指示信息中，并将该指示信息发送给供电装置。其中，该待充电电池可以包括电池管理系统中的电池。
需要注意的是，在向供电装置发送用于指示所述供电装置进行供电的指示信息之前，可以将该供电装置和电池管理系统进行连接，在确定出供电装置的供电回路中的接触器没有发生粘连，且该供电装置将电压拉升到该供电电压值的情况下，可以直接为电池管理系统中的电池进行充电，实现快速为电池管理系统中的电池充电的目的。
102、检测所述供电装置按照所述供电电压值拉升电压的过程中的供电电压。
具体的，在供电装置接收到该指示信息后，对该指示信息进行解析，获得该指示信息中的供电电压值，然后根据该供电电压值，将该供电装置的供 电电压从0V进行拉升，直至将供电电压拉升到该供电电压值，在供电电压拉升到该供电电压值后，才会使供电装置的供电回路中的接触器闭合，然后开始为待充电电池进行充电。由于供电装置按照供电电压值拉升电压的过程中，未发生粘连的供电装置的供电回路中的接触器不会闭合，因而供电装置的供电回路中的接触器的输出端不会输出电压，而发生粘连的供电装置中的接触器会处于闭合状态，因而供电装置的供电回路中的接触器的输出端能够输出电压，因此该供电装置的供电回路中的接触器发生粘连时检测到的供电电压值和该供电装置的供电回路中的接触器未发生粘连时检测到的供电电压值不同。进一步的，该供电装置的供电回路中的接触器未发生粘连时检测到的供电电压值为0V，而该供电装置的供电回路中的接触器发生粘连时检测到的供电电压值大于0V，且小于或者等于该供电装置的供电电压。
需要注意的是，在该供电装置和电池管理系统已经连接的情况下，在供电装置将供电电压拉升至指示信息中的供电电压值之后，电池管理系统的充电回路中的接触器才会闭合，即在供电装置按照供电电压值拉升电压的过程中，电池管理系统的充电回路中的接触器是不会闭合的，因此无论供电装置的供电回路中的接触器是否发生粘连，电池管理系统的充电回路中不会有电流产生，由于接触器发生粘连的前提条件是接触器处于闭合状态，且有大电流通过时才会发生，进而上述过程中不会使电池管理系统的充电回路中的接触器发生粘连，所以，通过检测该过程中的供电电压来判断供电装置的供电回路中的接触器是否发生粘连时，无论供电装置的供电回路中的接触器是否发生粘连，均不会对电池管理系统的安全性造成威胁。
在一个可行的实施方案中，由于在供电装置的供电回路中的接触器发生粘连后，在供电装置按照供电电压值拉升电压的过程中，供电装置的供电回路中的接触器输出端的供电电压呈爬坡式增长，因此需要检测至少两次供电装置的供电回路中的接触器输出端的供电电压，以判断供电装置的供电回路中的接触器是否发生粘连。
在一个可行的实施方案中，如果供电装置的供电回路中包括两个接触器，即正极接触器和负极接触器，在检测供电装置的供电回路中的接触器输出端的供电电压时，可以检测至少两次供电装置的供电回路中的正极接触器输出端和负极接触器输出端之间的供电电压。
103、根据检测到的供电电压值，判断所述供电装置的供电回路中的接触器是否发生粘连。
具体的，由于该供电装置的供电回路中的接触器发生粘连时检测到的供电电压值和该供电装置的供电回路中的接触器未发生粘连时检测到的供电电压值不同，因此可以通过检测到的供电电压值，判断供电装置的供电回路中的接触器是否发生粘连。
在一个可行的实施方案中，当检测至少两次供电装置的供电回路中的正极接触器输出端和负极接触器输出端之间的供电电压后，需要判断检测到的至少两次中的任意相邻两次所述供电装置的供电回路中的正极接触器输出端和负极接触器输出端之间的供电电压值之差是否均大于或者等于指定电压阈值；若检测到的至少两次中的任意相邻两次所述供电装置的供电回路中的正极接触器输出端和负极接触器输出端之间的供电电压值之差均大于或者等于指定电压阈值，确定所述供电装置的供电回路中的正极接触器和负极接触器发生粘连；若检测到的至少两次中的任意相邻两次所述供电装置的供电回路中的正极接触器输出端和负极接触器输出端之间的供电电压值之差均小于指定电压阈值，确定所述供电装置的供电回路中的正极接触器和负极接触器未发生粘连。
具体的，由于在供电装置的供电回路中的接触器发生粘连后，接触器是导通的，在供电装置拉升电压的过程中，接触器输出端的供电电压呈爬坡式增长，即上一次检测到的接触器输出端的供电电压小于下一次检测到的接触器输出端的供电电压，并且随着电压拉升时长的增长，上一次检测到的接触器输出端的供电电压与下一次检测到的接触器输出端的供电电压之差会越来越大。按照上述原理，可以将该指定电压阈值设定为10V，如果至少两次中的任意相邻两次检测到的供电装置的供电回路中的正极接触器输出端和负极接触器输出端之间的供电电压值之差均大于或者等于10V，则确定该供电装置的供电回路中的正极接触器和负极接触器发生粘连；如果至少两次中的任意相邻两次检测到的供电装置的供电回路中的正极接触器输出端和负极接触器输出端之间的供电电压值之差均小于10V，则确定该供电装置的供电回路中的正极接触器和负极接触器未发生粘连。
需要注意的是，为了使判断结果更加准确，可以判断至少两次供电装置 的供电回路中的正极接触器输出端和负极接触器输出端之间的供电电压值之差是否均大于或者等于指定电压阈值，当至少两次供电装置的供电回路中的正极接触器输出端和负极接触器输出端之间的供电电压值之差均大于或者等于指定电压阈值，确定该供电装置的供电回路中的正极接触器和负极接触器发生粘连；当至少两次供电装置的供电回路中的正极接触器输出端和负极接触器输出端之间的供电电压值之差均小于指定电压阈值，确定该供电装置的供电回路中的正极接触器和负极接触器未发生粘连。具体的判断次数可以根据实际需要进行设定。
在一个可行的实施方案中，若确定供电装置的供电回路中的接触器发生粘连，为了避免该供电装置将电压拉升到供电电压值后，对电池管理系统产生影响，使电池管理系统的充电回路中的接触器也发生粘连，需要向所述供电装置发送用于指示供电装置停止供电的指示信息。
在一个可行的实施方案中，该供电装置可以为供电装置。
在本申请实施例中，当需要供电装置提供电能之前，需要向该供电装置发生用于指示该供电装置进行供电的指示信息，其中，指示信息中携带有供电电压值，然后检测该供电装置按照所述供电电压值拉升电压过程中的供电电压，由于供电装置按照供电电压值拉升电压的过程中，未发生粘连的供电装置的供电回路中的接触器不会闭合，因而供电装置的供电回路中的接触器的输出端不会输出电压，而发生粘连的供电装置中的接触器会处于闭合状态，因而供电装置的供电回路中的接触器的输出端能够输出电压，因此该供电装置的供电回路中的接触器发生粘连时检测到的供电电压值和该供电装置的供电回路中的接触器未发生粘连时检测到的供电电压值不同，因此可以根据检测到的供电电压值，判断所述供电装置的供电回路中的接触器是否发生粘连，进而提高了电池管理系统的安全性。并且，由于判断供电装置的供电回路中的接触器是否发生粘连时，使用的检测到的供电电压值是供电装置按照供电电压值拉升电压的过程中的供电电压，即在供电装置按照供电电压值拉升电压的过程中，检测供电装置的供电回路中的接触器是否发生粘连，由于此时供电装置的输出电压还未达到指示信息中携带的供电电压值，不能使电池管理系统中的充电回路中的接触器闭合，因此该供电装置的输出电压不能使电池管理系统的充电回路中的接触器发生粘连，进而在上述判断供电装置的供 电回路中的接触器是否发生粘连的过程中，不会对电池管理系统的安全性造成威胁，因此又进一步提高了电池管理系统的安全性。
实施例二
如图2所示，为本申请实施例提供的一种接触器粘连检测方法，该方法应用于电池管理系统中，其中，该电池管理系统与充电桩通过充电接口连接，该方法可以包括以下步骤：
201、向充电桩发送携带有供电电压值的通讯握手报文。
具体的，在电池管理系统与充电桩通过充电接口连接后，电池管理系统可以向充电桩发送通讯握手报文，在充电桩接收到该通讯握手报文后，可以按照该通讯握手报文中的供电电压值拉升电压，并将电压拉升到该供电电压值之后为电池管理系统中的电池组进行充电。
在一个可行的实施方式中，可以通过下述步骤向充电桩发送携带有供电电压值的通讯握手报文：根据所述电池管理系统中的电池组的充电电压，确定所述供电电压值；将所述供电电压值封装到所述通讯握手报文中；将所述通讯握手报文发送给所述充电桩。
具体的，在充电桩为电池管理系统中的电池组进行充电时，需要根据该电池组的充电电压提供电能，这样可以在保证快速为该电池组进行充电的前提下，还可以保证该电池组的安全性，因此在将供电电压值封装到通讯握手报文之前，需要确定出该电池组的充电电压，然后将该充电电压确定为供电电压值，并封装到通讯握手报文中，并将该通讯握手报文发送给充电桩。
需要注意的是，由于电池管理系统与充电桩通过充电接口连接，在确定出充电桩的供电回路中的接触器没有发生粘连，且该充电桩将电压拉升到该供电电压值的情况下，可以直接为电池管理系统中的电池组进行充电，实现快速为电池管理系统中的电池组充电的目的。
202、检测所述充电桩按照所述供电电压值拉升电压的过程中的供电电压。
具体的，在充电桩接收到该通讯握手报文后，对该通讯握手报文进行解析，获得该通讯握手报文中的供电电压值，然后根据该供电电压值，将该充电桩的供电电压从0V进行拉升，直至将供电电压拉升到该供电电压值，在供电电压拉升到该供电电压值后，才会使充电桩的供电回路中的接触器闭合， 然后开始为电池管理系统中的电池组进行充电。由于充电桩按照供电电压值拉升电压的过程中，未发生粘连的充电桩的供电回路中的接触器不会闭合，因而充电桩的供电回路中的接触器的输出端不会输出电压，而发生粘连的充电桩中的接触器会处于闭合状态，因而充电桩的供电回路中的接触器的输出端能够输出电压，因此该充电桩的供电回路中的接触器发生粘连时检测到的供电电压值和该充电桩的供电回路中的接触器未发生粘连时检测到的供电电压值不同。进一步的，该充电桩的供电回路中的接触器未发生粘连时检测到的供电电压值为0V，而该充电桩的供电回路中的接触器发生粘连时检测到的供电电压值大于0V，且小于或者等于该充电桩的供电电压。
需要注意的是，在该充电桩和电池管理系统已经连接的情况下，在充电桩将供电电压拉升至通讯握手报文中的供电电压值之后，电池管理系统的充电回路中的接触器才会闭合，即在充电桩按照供电电压值拉升电压的过程中，电池管理系统的充电回路中的接触器是不会闭合的，因此无论充电桩的供电回路中的接触器是否发生粘连，电池管理系统的充电回路中不会有电流产生，由于接触器发生粘连的前提条件是接触器处于闭合状态，且有大电流通过时才会发生，进而上述过程中不会使电池管理系统的充电回路中的接触器发生粘连，所以，通过检测该过程中的供电电压来判断充电桩的供电回路中的接触器是否发生粘连时，无论充电桩的供电回路中的接触器是否发生粘连，均不会对电池管理系统的安全性造成威胁。
在一个可行的实施方案中，为了保证检测结果的准确性，在充电桩按照供电电压值拉升电压的过程中，需要检测至少两次电池管理系统的充电回路中正极接触器输入端和负极接触器输入端之间的供电电压；然后将检测到的至少两次所述电池管理系统的充电回路中正极接触器输入端和负极接触器输入端之间的供电电压，作为所述充电桩的供电回路中的正极接触器输出端和负极接触器输出端之间对应的供电电压。
203、根据检测到的供电电压值，判断所述充电桩的供电回路中的接触器是否发生粘连。
具体的，由于该充电桩的供电回路中的接触器发生粘连时检测到的供电电压值和该充电桩的供电回路中的接触器未发生粘连时检测到的供电电压值不同，因此可以通过检测到的供电电压值，判断充电桩的供电回路中的接触 器是否发生粘连。
在一个可行的实施方案中，当检测出至少两次充电桩的供电回路中的正极接触器输出端和负极接触器输出端之间对应的供电电压后，需要判断至少两次中的任意相邻两次所述充电桩的供电回路中的正极接触器输出端和负极接触器输出端之间对应的供电电压值之差是否均大于或者等于指定电压阈值；若至少两次中的任意相邻两次所述充电桩的供电回路中的正极接触器输出端和负极接触器输出端之间对应的供电电压值之差均大于或者等于指定电压阈值，确定所述充电桩的供电回路中的正极接触器和负极接触器发生粘连；若至少两次中的任意相邻两次所述充电桩的供电回路中的正极接触器输出端和负极接触器输出端之间对应的供电电压值之差均小于指定电压阈值，确定所述充电桩的供电回路中的正极接触器和负极接触器未发生粘连。
具体的，由于在充电桩的供电回路中的接触器发生粘连后，接触器是导通的，在充电桩拉升电压的过程中，接触器输出端的供电电压呈爬坡式增长，即上一次检测到的接触器输出端的供电电压小于下一次检测到的接触器输出端的供电电压，并且随着电压拉升时间的增长，上一次检测到的接触器输出端的供电电压与下一次检测到的接触器输出端的供电电压之差会越来越大。按照上述原理，可以将该指定电压阈值设定为10V，如果至少两次中的任意相邻两次检测到的充电桩的供电回路中的正极接触器输出端和负极接触器输出端之间的供电电压值之差均大于或者等于10V，则确定该充电桩的供电回路中的正极接触器和负极接触器发生粘连；如果至少两次中的任意相邻两次检测到的充电桩的供电回路中的正极接触器输出端和负极接触器输出端之间的供电电压值之差均小于10V，则确定该充电桩的供电回路中的正极接触器和负极接触器未发生粘连。
需要注意的是，为了使判断结果更加准确，可以判断至少两次充电桩的供电回路中的正极接触器输出端和负极接触器输出端之间的供电电压值之差是否均大于或者等于指定电压阈值，当至少两次充电桩的供电回路中的正极接触器输出端和负极接触器输出端之间的供电电压值之差均大于或者等于指定电压阈值，确定该充电桩的供电回路中的正极接触器和负极接触器发生粘连；当至少两次充电桩的供电回路中的正极接触器输出端和负极接触器输出端之间的供电电压值之差均小于指定电压阈值，确定该充电桩的供电回路中 的正极接触器和负极接触器未发生粘连。具体的判断次数可以根据实际需要进行设定。
在一个可行的实施方案中，若确定充电桩的供电回路中的接触器发生粘连，为了避免该充电桩将电压拉升到供电电压值后，对电池管理系统产生影响，使电池管理系统的充电回路中的接触器也发生粘连，需要向充电桩发送用于指示所述充电桩停止供电的指示信息。
在本申请实施例中，当需要充电桩提供电能之前，需要向充电桩发送携带有供电电压值的通讯握手报文，然后检测该充电桩按照所述供电电压值拉升电压过程中的供电电压，由于充电桩按照供电电压值拉升电压的过程中，未发生粘连的充电桩的供电回路中的接触器不会闭合，因而充电桩的供电回路中的接触器的输出端不会输出电压，而发生粘连的充电桩中的接触器会处于闭合状态，因而充电桩的供电回路中的接触器的输出端能够输出电压，因此该充电桩的供电回路中的接触器发生粘连时检测到的供电电压值和该充电桩的供电回路中的接触器未发生粘连时检测到的供电电压值不同，因此可以根据检测到的供电电压值，判断所述充电桩的供电回路中的接触器是否发生粘连，进而提高了电池管理系统的安全性。并且，由于判断充电桩的供电回路中的接触器是否发生粘连时，使用的检测到的供电电压值是充电桩按照供电电压值拉升电压的过程中的供电电压，即在充电桩按照供电电压值拉升电压的过程中，检测充电桩的供电回路中的接触器是否发生粘连，此时充电桩的输出电压还未达到通讯握手报文中携带的供电电压值，不能使电池管理系统中的充电回路中的接触器闭合，因此该充电桩的输出电压不能使电池管理系统的充电回路中的接触器发生粘连，进而在上述判断充电桩的供电回路中的接触器是否发生粘连的过程中，不会对电池管理系统的安全性造成威胁，因此又进一步提高了电池管理系统的安全性。
实施例三
为了进一步阐述本申请实施例的技术思想，现提供一种具体的实施方式进行说明，如图3所示，为本申请实施例提供的一种电池管理系统和充电桩的连接示意图，其中，K1和K2分别为充电桩供电回路中的正极接触器和负极接触器，K3和K4分别为电池管理系统充电回路中的正极接触器和负极接触器，该接触器粘连检测方法可以包括以下步骤：
1、电池管理系统根据电池组的充电电压，确定供电电压值。
2、电池管理系统将该供电电压值封装到通讯握手报文中。
3、电池管理系统将该通讯握手报文发送给充电桩。
4、充电桩根据该通讯握手报文中的供电电压值拉升电压。
5、在充电桩拉升电压的过程中，电池管理系统检测四次K3输入端和K4输入端的电压。
具体的，检测U7和U6处的电压。
6、计算每次检测到的K3输入端和K4输入端的电压之差，以确定每次检测到的充电桩的供电电压。
7、判断第二次与第一次充电桩的供电电压之差、第三次与第二次充电桩的供电电压之差、第四次与第三次充电桩的供电电压之差是否均大于或者等于10V。
8、如果第二次与第一次充电桩的供电电压之差、第三次与第二次充电桩的供电电压之差、第四次与第三次充电桩的供电电压之差均大于或者等于10V，确定K1和K2为发生粘连；如果第二次与第一次充电桩的供电电压之差、第三次与第二次充电桩的供电电压之差、第四次与第三次充电桩的供电电压之差均小于10V，确定K1和K2为未发生粘连。
10、若确定K1和K2发生粘连，则向充电桩发送用于停止供电的指示信息。
本申请实施例进一步给出实现上述方法实施例中各步骤及方法的装置实施例。
实施例四
如图4所示，为本申请实施例提供的一种接触器粘连检测装置，该装置包括：发送单元41，用于向供电装置发送用于指示所述供电装置进行供电的指示信息，其中，所述指示信息中携带有供电电压值；检测单元42，用于检测所述供电装置按照所述供电电压值拉升电压的过程中的供电电压；判断单元43，用于根据检测到的供电电压值，判断所述供电装置的供电回路中的接触器是否发生粘连。
在一个具体的实施方式中，所述发送单元41，具体用于：根据待充电电池的充电电压，确定所述供电电压值；将所述供电电压值封装到所述指示信 息中；将所述指示信息发送给所述供电装置。
在一个具体的实施方式中，所述检测单元42，具体用于：在所述供电装置按照所述供电电压值拉升电压的过程中，检测至少两次所述供电装置的供电回路中的接触器输出端的供电电压。
在一个具体的实施方式中，所述检测单元42，具体用于：检测至少两次所述供电装置的供电回路中的正极接触器输出端和负极接触器输出端之间的供电电压。
在一个具体的实施方式中，所述判断单元43，具体用于：判断检测到的至少两次中的任意相邻两次所述供电装置的供电回路中的正极接触器输出端和负极接触器输出端之间的供电电压值之差是否均大于或者等于指定电压阈值；若检测到的至少两次中的任意相邻两次所述供电装置的供电回路中的正极接触器输出端和负极接触器输出端之间的供电电压值之差均大于或者等于指定电压阈值，确定所述供电装置的供电回路中的正极接触器和负极接触器发生粘连；若检测到的至少两次中的任意相邻两次所述供电装置的供电回路中的正极接触器输出端和负极接触器输出端之间的供电电压值之差均小于指定电压阈值，确定所述供电装置的供电回路中的正极接触器和负极接触器未发生粘连。
在一个具体的实施方式中，所述发送单元41，还用于：若确定所述供电装置的供电回路中的接触器发生粘连，向所述供电装置发送用于指示所述供电装置停止供电的指示信息。
在一个具体的实施方式中，所述供电装置包括充电桩。
由于本实施例中的各单元能够执行实施例一所示的方法，本实施例未详细描述的部分，可参考对实施例一的相关说明。
在本申请实施例中，当需要供电装置提供电能之前，需要向该供电装置发生用于指示该供电装置进行供电的指示信息，其中，指示信息中携带有供电电压值，然后检测该供电装置按照所述供电电压值拉升电压过程中的供电电压，由于供电装置按照供电电压值拉升电压的过程中，未发生粘连的供电装置的供电回路中的接触器不会闭合，因而供电装置的供电回路中的接触器的输出端不会输出电压，而发生粘连的供电装置中的接触器会处于闭合状态，因而供电装置的供电回路中的接触器的输出端能够输出电压，因此该供电装 置的供电回路中的接触器发生粘连时检测到的供电电压值和该供电装置的供电回路中的接触器未发生粘连时检测到的供电电压值不同，因此可以根据检测到的供电电压值，判断所述供电装置的供电回路中的接触器是否发生粘连，进而提高了电池管理系统的安全性。并且，由于判断供电装置的供电回路中的接触器是否发生粘连时，使用的检测到的供电电压值是供电装置按照供电电压值拉升电压的过程中的供电电压，即在供电装置按照供电电压值拉升电压的过程中，检测供电装置的供电回路中的接触器是否发生粘连，由于此时供电装置的输出电压还未达到指示信息中携带的供电电压值，不能使电池管理系统中的充电回路中的接触器闭合，因此该供电装置的输出电压不能使电池管理系统的充电回路中的接触器发生粘连，进而在上述判断供电装置的供电回路中的接触器是否发生粘连的过程中，不会对电池管理系统的安全性造成威胁，因此又进一步提高了电池管理系统的安全性。
实施例五
如图5所示，本申请实施例提供了一种电池管理系统，该电池管理系统包括：发送单元51，用于向充电桩发送携带有供电电压值的通讯握手报文；检测单元52，用于检测所述充电桩按照所述供电电压值拉升电压的过程中的供电电压；判断单元53，用于根据检测到的供电电压值，判断所述充电桩的供电回路中的接触器是否发生粘连。
在一个具体的实施方式中，所述发送单元51，具体用于：根据所述电池管理系统中的电池组的充电电压，确定所述供电电压值；将所述供电电压值封装到所述通讯握手报文中；将所述通讯握手报文发送给所述充电桩。
在一个具体的实施方式中，所述检测单元52，具体用于：在所述充电桩按照所述供电电压值拉升电压的过程中，检测至少两次所述电池管理系统的充电回路中正极接触器输入端和负极接触器输入端之间的供电电压；将检测到的至少两次所述电池管理系统的充电回路中正极接触器输入端和负极接触器输入端之间的供电电压，作为所述充电桩的供电回路中的正极接触器输出端和负极接触器输出端之间对应的供电电压。
在一个具体的实施方式中，所述判断单元53，具体用于：判断至少两次中的任意相邻两次所述充电桩的供电回路中的正极接触器输出端和负极接触器输出端之间对应的供电电压值之差是否均大于或者等于指定电压阈值；若 至少两次中的任意相邻两次所述充电桩的供电回路中的正极接触器输出端和负极接触器输出端之间对应的供电电压值之差均大于或者等于指定电压阈值，确定所述充电桩的供电回路中的正极接触器和负极接触器发生粘连；若至少两次中的任意相邻两次所述充电桩的供电回路中的正极接触器输出端和负极接触器输出端之间对应的供电电压值之差均小于指定电压阈值，确定所述充电桩的供电回路中的正极接触器和负极接触器未发生粘连。
在一个具体的实施方式中，所述发送单元51，还用于：若确定所述充电桩的供电回路中的接触器发生粘连，向所述充电桩发送用于指示所述充电桩停止供电的指示信息。
由于本实施例中的各单元能够执行实施例二所示的方法，本实施例未详细描述的部分，可参考对实施例二的相关说明。
在本申请实施例中，当需要充电桩提供电能之前，需要向充电桩发送携带有供电电压值的通讯握手报文，然后检测该充电桩按照所述供电电压值拉升电压过程中的供电电压，由于充电桩按照供电电压值拉升电压的过程中，未发生粘连的充电桩的供电回路中的接触器不会闭合，因而充电桩的供电回路中的接触器的输出端不会输出电压，而发生粘连的充电桩中的接触器会处于闭合状态，因而充电桩的供电回路中的接触器的输出端能够输出电压，因此该充电桩的供电回路中的接触器发生粘连时检测到的供电电压值和该充电桩的供电回路中的接触器未发生粘连时检测到的供电电压值不同，因此可以根据检测到的供电电压值，判断所述充电桩的供电回路中的接触器是否发生粘连，进而提高了电池管理系统的安全性。并且，由于判断充电桩的供电回路中的接触器是否发生粘连时，使用的检测到的供电电压值是充电桩按照供电电压值拉升电压的过程中的供电电压，即在充电桩按照供电电压值拉升电压的过程中，检测充电桩的供电回路中的接触器是否发生粘连，此时充电桩的输出电压还未达到通讯握手报文中携带的供电电压值，不能使电池管理系统中的充电回路中的接触器闭合，因此该充电桩的输出电压不能使电池管理系统的充电回路中的接触器发生粘连，进而在上述判断充电桩的供电回路中的接触器是否发生粘连的过程中，不会对电池管理系统的安全性造成威胁，因此又进一步提高了电池管理系统的安全性。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描 述的系统，装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统，装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如，多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用硬件加软件功能单元的形式实现。
上述以软件功能单元的形式实现的集成的单元，可以存储在一个计算机可读取存储介质中。上述软件功能单元存储在一个存储介质中，包括若干指令用以使得一台计算机装置(可以是个人计算机，服务器，或者网络装置等)或处理器(Processor)执行本申请各个实施例所述方法的部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述仅为本申请的较佳实施例而已，并不用以限制本申请，凡在本申请的精神和原则之内，所做的任何修改、等同替换、改进等，均应包含在本申请保护的范围之内。

Claims (24)

  1. 一种接触器粘连检测方法，其特征在于，所述方法包括：
    向供电装置发送用于指示所述供电装置进行供电的指示信息，其中，所述指示信息中携带有供电电压值；
    检测所述供电装置按照所述供电电压值拉升电压的过程中的供电电压；
    根据检测到的供电电压值，判断所述供电装置的供电回路中的接触器是否发生粘连。
  2. 如权利要求1所述的方法，其特征在于，所述向供电装置发送用于指示所述供电装置进行供电的指示信息的步骤，包括：
    根据待充电电池的充电电压，确定所述供电电压值；
    将所述供电电压值封装到所述指示信息中；
    将所述指示信息发送给所述供电装置。
  3. 如权利要求1所述的方法，其特征在于，所述检测所述供电装置按照所述供电电压值拉升电压的过程中的供电电压的步骤，包括：
    在所述供电装置按照所述供电电压值拉升电压的过程中，检测至少两次所述供电装置的供电回路中的接触器输出端的供电电压。
  4. 如权利要求3所述的方法，其特征在于，所述检测至少两次所述供电装置的供电回路中的接触器输出端的供电电压的步骤，包括：
    检测至少两次所述供电装置的供电回路中的正极接触器输出端和负极接触器输出端之间的供电电压。
  5. 如权利要求4所述的方法，其特征在于，所述根据检测到的供电电压值，判断所述供电装置的供电回路中的接触器是否发生粘连的步骤，包括：
    判断检测到的至少两次中的任意相邻两次所述供电装置的供电回路中的正极接触器输出端和负极接触器输出端之间的供电电压值之差是否均大于或者等于指定电压阈值；
    若检测到的至少两次中的任意相邻两次所述供电装置的供电回路中的正极接触器输出端和负极接触器输出端之间的供电电压值之差均大于或者等于指定电压阈值，确定所述供电装置的供电回路中的正极接触器和负极接触器发生粘连；
    若检测到的至少两次中的任意相邻两次所述供电装置的供电回路中的正 极接触器输出端和负极接触器输出端之间的供电电压值之差均小于指定电压阈值，确定所述供电装置的供电回路中的正极接触器和负极接触器未发生粘连。
  6. 如权利要求1所述的方法，其特征在于，还包括：
    若确定所述供电装置的供电回路中的接触器发生粘连，向所述供电装置发送用于指示所述供电装置停止供电的指示信息。
  7. 如权利要求1所述的方法，其特征在于，所述供电装置包括充电桩。
  8. 一种接触器粘连检测装置，其特征在于，所述装置包括：
    发送单元，用于向供电装置发送用于指示所述供电装置进行供电的指示信息，其中，所述指示信息中携带有供电电压值；
    检测单元，用于检测所述供电装置按照所述供电电压值拉升电压的过程中的供电电压；
    判断单元，用于根据检测到的供电电压值，判断所述供电装置的供电回路中的接触器是否发生粘连。
  9. 如权利要求8所述的装置，其特征在于，所述发送单元，具体用于：
    根据待充电电池的充电电压，确定所述供电电压值；
    将所述供电电压值封装到所述指示信息中；
    将所述指示信息发送给所述供电装置。
  10. 如权利要求8所述的装置，其特征在于，所述检测单元，具体用于：
    在所述供电装置按照所述供电电压值拉升电压的过程中，检测至少两次所述供电装置的供电回路中的接触器输出端的供电电压。
  11. 如权利要求10所述的装置，其特征在于，所述检测单元，具体用于：
    检测至少两次所述供电装置的供电回路中的正极接触器输出端和负极接触器输出端之间的供电电压。
  12. 如权利要求11所述的装置，其特征在于，所述判断单元，具体用于：
    判断检测到的至少两次中的任意相邻两次所述供电装置的供电回路中的正极接触器输出端和负极接触器输出端之间的供电电压值之差是否均大于或者等于指定电压阈值；
    若检测到的至少两次中的任意相邻两次所述供电装置的供电回路中的正极接触器输出端和负极接触器输出端之间的供电电压值之差均大于或者等于 指定电压阈值，确定所述供电装置的供电回路中的正极接触器和负极接触器发生粘连；
    若检测到的至少两次中的任意相邻两次所述供电装置的供电回路中的正极接触器输出端和负极接触器输出端之间的供电电压值之差均小于指定电压阈值，确定所述供电装置的供电回路中的正极接触器和负极接触器未发生粘连。
  13. 如权利要求8所述的装置，其特征在于，所述发送单元，还用于：
    若确定所述供电装置的供电回路中的接触器发生粘连，向所述供电装置发送用于指示所述供电装置停止供电的指示信息。
  14. 如权利要求8所述的装置，其特征在于，所述供电装置包括充电桩。
  15. 一种接触器粘连检测方法，其特征在于，所述方法应用于电池管理系统中，所述方法包括：
    向充电桩发送携带有供电电压值的通讯握手报文；
    检测所述充电桩按照所述供电电压值拉升电压的过程中的供电电压；
    根据检测到的供电电压值，判断所述充电桩的供电回路中的接触器是否发生粘连。
  16. 如权利要求15所述的方法，其特征在于，所述向充电桩发送携带有供电电压值的通讯握手报文的步骤，包括：
    根据所述电池管理系统中的电池组的充电电压，确定所述供电电压值；
    将所述供电电压值封装到所述通讯握手报文中；
    将所述通讯握手报文发送给所述充电桩。
  17. 如权利要求15所述的方法，其特征在于，所述检测所述充电桩按照所述供电电压值拉升电压的过程中的供电电压的步骤，包括：
    在所述充电桩按照所述供电电压值拉升电压的过程中，检测至少两次所述电池管理系统的充电回路中正极接触器输入端和负极接触器输入端之间的供电电压；
    将检测到的至少两次所述电池管理系统的充电回路中正极接触器输入端和负极接触器输入端之间的供电电压，作为所述充电桩的供电回路中的正极接触器输出端和负极接触器输出端之间对应的供电电压。
  18. 如权利要求17所述的方法，其特征在于，所述根据检测到的供电电 压值，判断所述充电桩的供电回路中的接触器是否发生粘连的步骤，包括：
    判断至少两次中的任意相邻两次所述充电桩的供电回路中的正极接触器输出端和负极接触器输出端之间对应的供电电压值之差是否均大于或者等于指定电压阈值；
    若至少两次中的任意相邻两次所述充电桩的供电回路中的正极接触器输出端和负极接触器输出端之间对应的供电电压值之差均大于或者等于指定电压阈值，确定所述充电桩的供电回路中的正极接触器和负极接触器发生粘连；
    若至少两次中的任意相邻两次所述充电桩的供电回路中的正极接触器输出端和负极接触器输出端之间对应的供电电压值之差均小于指定电压阈值，确定所述充电桩的供电回路中的正极接触器和负极接触器未发生粘连。
  19. 如权利要求15所述的方法，其特征在于，还包括：
    若确定所述充电桩的供电回路中的接触器发生粘连，向所述充电桩发送用于指示所述充电桩停止供电的指示信息。
  20. 一种电池管理系统，其特征在于，所述电池管理系统包括：
    发送单元，用于向充电桩发送携带有供电电压值的通讯握手报文；
    检测单元，用于检测所述充电桩按照所述供电电压值拉升电压的过程中的供电电压；
    判断单元，用于根据检测到的供电电压值，判断所述充电桩的供电回路中的接触器是否发生粘连。
  21. 如权利要求20所述的电池管理系统，其特征在于，所述发送单元，具体用于：
    根据所述电池管理系统中的电池组的充电电压，确定所述供电电压值；
    将所述供电电压值封装到所述通讯握手报文中；
    将所述通讯握手报文发送给所述充电桩。
  22. 如权利要求20所述的电池管理系统，其特征在于，所述检测单元，具体用于：
    在所述充电桩按照所述供电电压值拉升电压的过程中，检测至少两次所述电池管理系统的充电回路中正极接触器输入端和负极接触器输入端之间的供电电压；
    将检测到的至少两次所述电池管理系统的充电回路中正极接触器输入端 和负极接触器输入端之间的供电电压，作为所述充电桩的供电回路中的正极接触器输出端和负极接触器输出端之间对应的供电电压。
  23. 如权利要求22所述的电池管理系统，其特征在于，所述判断单元，具体用于：
    判断至少两次中的任意相邻两次所述充电桩的供电回路中的正极接触器输出端和负极接触器输出端之间对应的供电电压值之差是否均大于或者等于指定电压阈值；
    若至少两次中的任意相邻两次所述充电桩的供电回路中的正极接触器输出端和负极接触器输出端之间对应的供电电压值之差均大于或者等于指定电压阈值，确定所述充电桩的供电回路中的正极接触器和负极接触器发生粘连；
    若至少两次中的任意相邻两次所述充电桩的供电回路中的正极接触器输出端和负极接触器输出端之间对应的供电电压值之差均小于指定电压阈值，确定所述充电桩的供电回路中的正极接触器和负极接触器未发生粘连。
  24. 如权利要求20所述的电池管理系统，所述发送单元，还用于：
    若确定所述充电桩的供电回路中的接触器发生粘连，向所述充电桩发送用于指示所述充电桩停止供电的指示信息。
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