CN114123379A - Battery pack charging connection confirmation method and device - Google Patents
Battery pack charging connection confirmation method and device Download PDFInfo
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- CN114123379A CN114123379A CN202111201665.5A CN202111201665A CN114123379A CN 114123379 A CN114123379 A CN 114123379A CN 202111201665 A CN202111201665 A CN 202111201665A CN 114123379 A CN114123379 A CN 114123379A
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- 238000004891 communication Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 3
- 230000004617 sleep duration Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
- H02J7/00036—Charger exchanging data with battery
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00001—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00016—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using a wired telecommunication network or a data transmission bus
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00022—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using wireless data transmission
- H02J13/00026—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using wireless data transmission involving a local wireless network, e.g. Wi-Fi, ZigBee or Bluetooth
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
- H02J7/00045—Authentication, i.e. circuits for checking compatibility between one component, e.g. a battery or a battery charger, and another component, e.g. a power source
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
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- Computer Networks & Wireless Communication (AREA)
- Human Computer Interaction (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention belongs to the technical field of charging, and discloses a method and a device for confirming charging connection of a battery pack, wherein the method comprises the following steps: when the battery pack is connected with a charging station, acquiring a charging confirmation signal and a low current signal output by the charging station; when the charging confirmation signal and the small current signal meet the preset connection completion condition, judging that the connection between the battery pack and the charging station is completed; and when the connection of the battery pack and the charging station is completed, allowing the charging station to charge the battery pack. According to the invention, when the acquired charging confirmation signal and the small current signal output by the charging station meet the preset connection completion condition, the connection completion of the battery pack and the charging station is judged, and the charging station is allowed to charge the battery pack, so that the technical problem that whether the charging connector of the battery pack is connected in place or not can not be accurately judged in the prior art is solved, and the charging safety of the battery pack is improved.
Description
Technical Field
The invention relates to the technical field of charging, in particular to a method and a device for confirming charging connection of a battery pack.
Background
The problem of endurance has been one of the problems faced by electric vehicles and is difficult to solve. In response to this problem, a battery replacement mode has been developed in recent years. The battery replacement mode is a technology for replacing batteries, a customer can drive an electric vehicle to a nearby battery replacement station to replace a power battery which is already fully charged when the electric quantity is low, the old battery is conveyed to a background to be charged, and the electric vehicle is replaced to another vehicle when the power battery is required after being fully charged, the process only needs a few minutes, compared with quick charging for one or two hours and slow charging for more than ten hours, the battery replacement mode is undoubtedly very advantageous in charging time, in the battery replacement mode, the battery pack is detached to be charged, the battery pack is separated from the whole vehicle state, in the charging process of the battery pack, safety accidents can be caused when the charging connector of the battery pack is not connected in place, and therefore whether the charging connector of the battery pack is connected in place or not is ensured to become a problem to be solved urgently.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention mainly aims to provide a method, a device, equipment and a storage medium for confirming charging connection of a battery pack, and aims to solve the technical problem that whether a charging head of the battery pack is connected in place or not cannot be accurately judged in the prior art.
In order to achieve the above object, the present invention provides a battery pack charging connection confirmation method, including the steps of:
when the battery pack is connected with a charging station, acquiring a charging confirmation signal and a low current signal output by the charging station;
when the charging confirmation signal and the small current signal meet a preset connection completion condition, judging that the connection between the battery pack and the charging station is completed;
and when the connection of the battery pack and the charging station is completed, allowing the charging station to charge the battery pack.
Optionally, after the step of acquiring the charging confirmation signal and the low current signal output by the charging station when the battery pack is connected to the charging station, the method further includes:
when the charging confirmation signal and/or the small current signal do not meet a preset connection completion condition, judging that the connection between the battery pack and the charging station is abnormal;
and when the battery pack is abnormally connected with the charging station, sending abnormal reminding information.
Optionally, after the step of allowing the charging station to charge the battery pack when the connection between the battery pack and the charging station is completed, the method further includes:
detecting a low current signal output by the charging station in real time;
when the small current signal does not belong to a preset interval, acquiring the duration of the small current signal outside the preset interval;
when the duration is longer than a preset duration, judging that the battery pack is abnormally charged;
and when the battery pack is abnormally charged, disconnecting the battery pack from the charging station and entering a sleep mode.
Optionally, after the step of determining that the battery pack is abnormally charged when the duration is longer than a preset duration, the method further includes:
and generating a fault code according to the charging abnormal information of the battery pack, and sending the fault code to terminal equipment.
Optionally, after the step of disconnecting the battery pack from the charging station and entering the sleep mode when the charging of the battery pack is abnormal, the method further includes:
when a wake-up instruction sent by the charging station is received, switching from the sleep mode to a working mode according to the wake-up instruction;
judging whether the charging confirmation signal and the small current signal meet preset conditions or not;
and when the charging confirmation signal and the small current signal meet a preset condition, establishing connection between the battery pack and the charging station.
In order to achieve the above object, the present invention provides a battery pack charging connection confirmation apparatus, including: the device comprises an acquisition module, a judgment module and a charging module;
the acquisition module is used for acquiring a charging confirmation signal and a low current signal output by the charging station when the battery pack is connected with the charging station;
the judging module is used for judging that the connection between the battery pack and the charging station is finished when the charging confirmation signal and the small current signal meet a preset connection finishing condition;
the charging module is used for allowing the charging station to charge the battery pack when the connection between the battery pack and the charging station is completed.
Optionally, the obtaining module is further configured to determine that the connection between the battery pack and the charging station is abnormal when the charging confirmation signal and/or the low current signal do not satisfy a preset connection completion condition; and when the battery pack is abnormally connected with the charging station, sending abnormal reminding information.
Optionally, the charging module is further configured to detect a low current signal output by the charging station in real time; when the small current signal does not belong to a preset interval, acquiring the duration of the small current signal outside the preset interval; when the duration is longer than a preset duration, judging that the battery pack is abnormally charged; and when the battery pack is abnormally charged, disconnecting the battery pack from the charging station and entering a sleep mode.
Optionally, the charging module is further configured to generate a fault code according to the charging abnormality information of the battery pack, and send the fault code to the terminal device.
Optionally, the charging module is further configured to switch from the sleep mode to the working mode according to the wake-up instruction when receiving the wake-up instruction sent by the charging station; judging whether the charging confirmation signal and the small current signal meet preset conditions or not; and when the charging confirmation signal and the small current signal meet a preset condition, establishing connection between the battery pack and the charging station.
According to the invention, when the battery pack is connected with the charging station, a charging confirmation signal and a low current signal output by the charging station are acquired; when the charging confirmation signal and the small current signal meet a preset connection completion condition, judging that the connection between the battery pack and the charging station is completed; and when the connection of the battery pack and the charging station is completed, allowing the charging station to charge the battery pack. According to the invention, when the acquired charging confirmation signal and the small current signal output by the charging station meet the preset connection completion condition, the connection completion of the battery pack and the charging station is judged, and the charging station is allowed to charge the battery pack, so that the technical problem that whether the charging connector of the battery pack is connected in place or not can not be accurately judged in the prior art is solved, and the charging safety of the battery pack is improved.
Drawings
Fig. 1 is a schematic structural diagram of a battery pack charging connection confirmation apparatus in a hardware operating environment according to an embodiment of the present invention;
FIG. 2 is a flowchart illustrating a first embodiment of a method for confirming a charging connection of a battery pack according to the present invention;
FIG. 3 is a flowchart illustrating a method for confirming a charging connection of a battery pack according to a second embodiment of the present invention;
fig. 4 is a block diagram illustrating a first embodiment of a device for confirming a charging connection of a battery pack according to the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a battery pack charging connection confirmation apparatus in a hardware operating environment according to an embodiment of the present invention.
As shown in fig. 1, the battery pack charging connection confirmation apparatus may include: a processor 1001, such as a Central Processing Unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display screen (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a Wireless interface (e.g., a Wireless-Fidelity (WI-FI) interface). The Memory 1005 may be a Random Access Memory (RAM) or a Non-Volatile Memory (NVM), such as a disk Memory. The memory 1005 may alternatively be a storage device separate from the processor 1001.
Those skilled in the art will appreciate that the configuration shown in fig. 1 does not constitute a limitation of the battery pack charging connection confirmation apparatus and may include more or fewer components than those shown, or some components in combination, or a different arrangement of components.
As shown in fig. 1, a memory 1005, which is a storage medium, may include therein an operating system, a network communication module, a user interface module, and a battery pack charging connection confirmation program.
In the battery pack charging connection confirmation apparatus shown in fig. 1, the network interface 1004 is mainly used for data communication with a network server; the user interface 1003 is mainly used for data interaction with a user; the processor 1001 and the memory 1005 in the battery pack charging connection confirmation apparatus according to the present invention may be provided in the battery pack charging connection confirmation apparatus which calls the battery pack charging connection confirmation program stored in the memory 1005 through the processor 1001 and executes the battery pack charging connection confirmation method provided by the embodiment of the present invention.
An embodiment of the present invention provides a method for confirming a charging connection of a battery pack, and referring to fig. 2, fig. 2 is a schematic flow chart of a first embodiment of the method for confirming a charging connection of a battery pack according to the present invention.
In this embodiment, the method for confirming the charging connection of the battery pack includes the following steps:
step S10: when the battery pack is connected with a charging station, a charging confirmation signal and a low current signal output by the charging station are acquired.
The main executing body of the present embodiment may be a computing service device having functions of data processing, network communication, and program execution, such as a tablet computer, a personal computer, a mobile phone, or an electronic device, a Battery pack charging connection confirmation device, etc., which can implement the above functions, and the present embodiment and the following embodiments are described below by taking a Battery Management System (BMS) as an example.
It can be understood that the method for confirming connection of battery pack charging of this embodiment is suitable for confirming connection of a battery pack to be replaced during single-pack charging of the battery pack after the battery of the electric vehicle is replaced, the charging confirmation signal is a signal received by a pin CC2 at a charging port of the battery pack, and when a charging port of the battery pack is connected to a charging station, the charging station outputs a charging confirmation signal to the battery pack through a pin CC2, so the charging confirmation signal may also be referred to as a CC2 signal.
It can be understood that, when the battery pack is connected with the charging station, the charging station can also output a small current signal, a pin can be added to a charging port of the battery pack to receive the small current signal output by the charging station, the small current signal output by the charging station can also be received through an existing pin of the charging port of the battery pack, the BMS obtains a charging confirmation signal and the small current signal output by the charging station at the same time, and after obtaining the charging confirmation signal and the small current signal, the BMS can perform noise reduction processing on the two signals to obtain the charging confirmation signal and the small current signal after noise reduction.
In a specific implementation, when the battery is replaced or the electric vehicle is charged, the charging connector of the battery pack is connected with the charging station, and the BMS acquires a charging confirmation signal and a low current signal transmitted by the charging station through the charging connector.
Step S20: and when the charging confirmation signal and the small current signal meet a preset connection completion condition, judging that the connection between the battery pack and the charging station is completed.
It is understood that the preset connection completion condition may be: the voltage value of the charging confirmation signal reaches the set voltage value and the current value of the small current signal belongs to the preset interval, for example, the voltage value of the charging confirmation signal reaches the set value of 5V and the current value of the small current signal belongs to the preset interval [20mA,50mA ], and the set voltage value and the preset interval may be set according to specific situations, which is not limited in this embodiment.
It is to be understood that the charging confirmation signal and the small current signal should satisfy the preset connection completion condition at the same time, and when either one of the charging confirmation signal and the small current signal does not satisfy the preset connection completion condition, it is determined that the connection of the battery pack to the charging station is not completed.
Step S30: and when the connection of the battery pack and the charging station is completed, allowing the charging station to charge the battery pack.
It is understood that the battery pack is connected to the charging station, indicating that the battery pack is in a safe connection with the charging station, and the BMS allows the charging station to charge the battery pack.
In a specific implementation, when the battery pack is connected with the charging station, the BMS acquires a charging confirmation signal and a small current signal output by the charging station, and when the voltage value of the charging confirmation signal reaches a set voltage value and the current value of the small current signal belongs to a preset interval, the BMS determines that the connection of the battery pack with the charging station is completed, and when the connection of the battery pack with the charging station is completed, the BMS allows the charging station to charge the battery pack.
Further, in order to reduce false alarm and ensure smooth charging of the battery pack, after the step S10, the method further includes: when the charging confirmation signal and/or the small current signal do not meet a preset connection completion condition, judging that the connection between the battery pack and the charging station is abnormal; and when the battery pack is abnormally connected with the charging station, sending abnormal reminding information.
It should be understood that, when either or both of the charge confirmation signal and the small current signal do not satisfy the preset connection condition, it indicates that the battery pack is not correctly connected or not connected to the charging station, and at this time, the BMS determines that the connection between the battery pack and the charging station is abnormal, for example, the preset connection condition is: the voltage value of the charging confirmation signal is 5V, the current value of the small current signal belongs to a preset interval [20mA,50mA ], if the voltage value of the charging confirmation signal acquired by the BMS is 3V, and the current value of the small current signal acquired by the BMS is 30mA, the connection between the battery pack and the charging station is judged to be abnormal, if the voltage value of the charging confirmation signal acquired by the BMS is 5V, and the current value of the small current signal acquired by the BMS is 10mA, the connection between the battery pack and the charging station is judged to be abnormal, and if the voltage value of the charging confirmation signal acquired by the BMS is 3V, and the current value of the small current signal acquired by the BMS is 10mA, the connection between the battery pack and the charging station is judged to be abnormal.
It is understood that the abnormality prompting message may be one or more of an audio prompting message and a light message, and the embodiment is not limited thereto.
In the embodiment, when the battery pack is connected with the charging station, the charging confirmation signal and the low current signal output by the charging station are acquired; when the charging confirmation signal and the small current signal meet a preset connection completion condition, judging that the connection between the battery pack and the charging station is completed; and when the connection of the battery pack and the charging station is completed, allowing the charging station to charge the battery pack. In the embodiment, when the acquired charging confirmation signal and the acquired low-current signal output by the charging station meet the preset connection completion condition, the connection completion of the battery pack and the charging station is judged, and the charging station is allowed to charge the battery pack, so that the technical problem that whether the charging connector of the battery pack is connected in place or not can not be accurately judged in the prior art is solved, and the charging safety of the battery pack is improved.
Referring to fig. 3, fig. 3 is a flowchart illustrating a method for confirming a charging connection of a battery pack according to a second embodiment of the present invention.
Based on the first embodiment described above, in the present embodiment, after the step S30, the method further includes:
step S301: and detecting the small current signal output by the charging station in real time.
It should be understood that there may be a case of charging abnormality during the charging of the battery pack by the charging station, and the BMS detects a small current signal output from the charging station in real time in order to eliminate the abnormal case during the charging.
It is understood that, when detecting the small current signal output from the charging station, the detection frequency may be set, and the small current signal may be detected at a preset time interval, for example, the detection frequency may be set to 10 times/second.
Step S302: and when the small current signal does not belong to a preset interval, acquiring the duration of the small current signal outside the preset interval.
It can be understood that, when the battery pack is charged normally, the small current signal belongs to a preset interval, where the preset interval may be set according to a specific use scenario, for example, the preset interval may be set to [20mA,50mA ], and when the small current signal belongs to the preset interval in the charging process of the battery pack, it indicates that the battery pack is charged normally.
It should be understood that, during the charging process of the battery pack, a noise signal may be generated within a very short time period, so as to affect the magnitude of the detected small current signal, and further affect the accuracy of the determination of the charging state during the charging process of the battery pack.
Step S303: and when the duration is longer than the preset duration, judging that the battery pack is abnormally charged.
It can be understood that the preset time duration may be determined according to the signal type of the noise signal of the small current signal and the duration of the signal in the specific usage scenario, for example, the preset time duration is set to 0 second, and when the preset time duration is 0 second, as long as it is detected that the small current signal does not belong to the preset interval, it is determined that the battery pack is abnormally charged; when the preset time is set to 0.5 second, when it is detected that the small current signal does not belong to the preset interval, the duration of the small current signal outside the preset interval is obtained, if the duration is less than 0.5 second, it is determined that the battery pack is normally charged, and if the duration is greater than 0.5 second, it is determined that the battery pack is abnormally charged, wherein a specific value of the preset time is determined according to a specific application scenario, which is not limited in this embodiment.
It can be understood that, in order to further ensure the charging safety of the battery pack, when the small current signal does not belong to the preset interval, the duration that the small current signal is outside the preset interval is obtained, when the duration is less than the preset duration, the number of times that the small current signal does not belong to the preset interval in the historical time period is obtained, if the number of times is less than the preset number of times, the battery pack is determined to be normally charged, if the number of times is greater than the preset number of times, the battery pack is determined to be abnormally charged, for example, the preset interval is set to [20mA,50mA ], the preset duration is set to 0.5 second, the preset number of times is set to 3 times, the historical time period is set to 24 hours, when the small current signal does not belong to [20mA,50mA ], the duration that the small current signal does not belong to the preset interval is obtained to 0.3 seconds, when the number of times that the small current signal does not belong to the preset interval in the past 24 hours is obtained, and if the number of times is 2, the charging of the battery pack is determined to be normal, and if the number of times is 4, the charging of the battery pack is determined to be abnormal, where the setting of the preset number of times is determined according to a specific application scenario, which is not limited in this embodiment.
Step S304: and when the battery pack is abnormally charged, disconnecting the battery pack from the charging station and entering a sleep mode.
It should be understood that, in order to secure charging safety, when the battery pack is abnormally charged, the BMS disconnects the battery pack from the charging station to protect the battery pack from damage and to prevent a safety accident from occurring, and when the battery pack is disconnected from the charging station, the BMS enters a sleep mode.
In a specific implementation, for example, the preset interval is set to [20mA,50mA ], the preset duration is 0.5 second, during the charging process of the battery pack, the BMS detects the magnitude of the small current signal in real time, when the magnitude of the detected current signal is not within the preset interval [20mA,50mA ], the duration that the small current signal is outside the preset interval [20mA,50mA ] is obtained, when the duration is 1 second, the BMS determines that the charging pack is abnormal in charging, at this time, the BMS disconnects the battery pack from the charging station, and when the battery pack is disconnected from the charging station, the BMS enters the sleep mode.
Further, in order to timely remove the fault when the charging pack is abnormally charged, after the step of determining that the charging pack is abnormally charged when the duration is longer than the preset duration, the method further includes: and generating a fault code according to the charging abnormal information of the battery pack, and sending the fault code to terminal equipment.
It should be understood that the terminal device may be a device of a charging station operator, and the BMS generates a fault code according to the charging abnormality confidence of the charging pack when the charging pack is abnormally charged, and transmits the fault code to the terminal device.
Further, in order to timely recover charging of the battery pack when the power grid is recovered to normal or the fault is eliminated, after the step of disconnecting the battery pack from the charging station and entering the sleep mode when the battery pack is abnormally charged, the method further includes: when a wake-up instruction sent by the charging station is received, switching from the sleep mode to a working mode according to the wake-up instruction; judging whether the charging confirmation signal and the small current signal meet preset conditions or not; and when the charging confirmation signal and the small current signal meet a preset condition, establishing connection between the battery pack and the charging station.
It should be understood that the wake-up instruction is an instruction for waking up the BMS from the sleep mode to enter the operating mode, when the BMS enters the sleep mode, the charger of the charging station counts the sleep duration of the BMS, when the sleep duration reaches the preset duration, the charger of the charging station sends the wake-up instruction to the BMS, and the preset sleep duration can be determined according to the power grid environment of the power grid where the charging station is located.
It can be understood that, when the BMS receives a wake-up instruction sent by a charger of the charging station, the BMS switches from the sleep mode to the working mode according to the wake-up instruction, first determines whether a charging confirmation signal and a small current signal satisfy a preset condition, determines that the connection between the battery pack and the charging station is normal, that is, the fault has disappeared, and reestablishes the connection between the battery pack and the charging station after the fault has disappeared, so that the charging station continues to charge the battery pack; if the preset condition is not met, the fact that the connection between the battery pack and the charging station is abnormal, namely the fault does not disappear, is judged, the connection between the battery pack and the charging station is not established so as to ensure the safety of the battery pack, and the BMS continues to enter the sleep mode when the fault does not disappear.
The embodiment detects the small current signal output by the charging station in real time; when the small current signal does not belong to a preset interval, acquiring the duration of the small current signal outside the preset interval; when the duration is longer than a preset duration, judging that the battery pack is abnormally charged; and when the battery pack is abnormally charged, disconnecting the battery pack from the charging station and entering a sleep mode. Because this embodiment is at the battery package in-process real-time detection undercurrent signal that charges, when the time length that undercurrent signal does not belong to the interval of predetermineeing is greater than predetermineeing the time length and judge that the battery package charges unusually and break off the battery package and be connected with the charging station, solved among the prior art battery package charging process can not effectively guarantee the technical problem of charging safety, guaranteed charging safety.
Referring to fig. 4, fig. 4 is a block diagram illustrating a first embodiment of a device for confirming a charging connection of a battery pack according to the present invention.
As shown in fig. 4, the device for confirming charging connection of a battery pack according to an embodiment of the present invention includes: the charging confirmation apparatus includes: the device comprises an acquisition module 10, a judgment module 20 and a charging module 30;
the acquiring module 10 is configured to acquire a charging confirmation signal and a low current signal output by a charging station when a battery pack is connected to the charging station;
the judging module 20 is configured to judge that the connection between the battery pack and the charging station is completed when the charging confirmation signal and the low current signal satisfy a preset connection completion condition;
the charging module 30 is configured to allow the charging station to charge the battery pack when the connection between the battery pack and the charging station is completed.
The obtaining module 10 of this embodiment obtains the charging confirmation signal and the low current signal output by the charging station when the battery pack is connected to the charging station; when the charging confirmation signal and the small current signal meet a preset connection completion condition, the determination module 20 determines that the connection between the battery pack and the charging station is completed; the charging module 30 allows the charging station to charge the battery pack when the connection of the battery pack with the charging station is completed. In the embodiment, when the acquired charging confirmation signal and the acquired low-current signal output by the charging station meet the preset connection completion condition, the connection completion of the battery pack and the charging station is judged, and the charging station is allowed to charge the battery pack, so that the technical problem that whether the charging connector of the battery pack is connected in place or not can not be accurately judged in the prior art is solved, and the charging safety of the battery pack is improved.
A second embodiment of the battery pack charging connection confirmation apparatus according to the present invention is provided based on the first embodiment of the battery pack charging connection confirmation apparatus according to the present invention.
In this embodiment, the obtaining module 10 is further configured to determine that the connection between the battery pack and the charging station is abnormal when the charging confirmation signal and/or the low current signal does not satisfy a preset connection completion condition; and when the battery pack is abnormally connected with the charging station, sending abnormal reminding information.
The charging module 30 is further configured to detect a low current signal output by the charging station in real time; when the small current signal does not belong to a preset interval, acquiring the duration of the small current signal outside the preset interval; when the duration is longer than a preset duration, judging that the battery pack is abnormally charged; and when the battery pack is abnormally charged, disconnecting the battery pack from the charging station and entering a sleep mode.
The charging module 30 is further configured to generate a fault code according to the charging abnormality information of the battery pack, and send the fault code to the terminal device.
The charging module 30 is further configured to switch from the sleep mode to the working mode according to the wake-up instruction when receiving the wake-up instruction sent by the charging station; judging whether the charging confirmation signal and the small current signal meet preset conditions or not; and when the charging confirmation signal and the small current signal meet a preset condition, establishing connection between the battery pack and the charging station.
Other embodiments or specific implementations of the device for confirming battery pack charging connection according to the present invention refer to the above method embodiments, and are not described herein again.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., a rom/ram, a magnetic disk, an optical disk) and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A method for confirming a charging connection of a battery pack, the method comprising:
when the battery pack is connected with a charging station, acquiring a charging confirmation signal and a low current signal output by the charging station;
when the charging confirmation signal and the small current signal meet a preset connection completion condition, judging that the connection between the battery pack and the charging station is completed;
and when the connection of the battery pack and the charging station is completed, allowing the charging station to charge the battery pack.
2. The method of claim 1, wherein after the step of acquiring the charging confirmation signal and the small current signal output by the charging station when the battery pack is connected to the charging station, the method further comprises:
when the charging confirmation signal and/or the small current signal do not meet a preset connection completion condition, judging that the connection between the battery pack and the charging station is abnormal;
and when the battery pack is abnormally connected with the charging station, sending abnormal reminding information.
3. The method of claim 1, wherein after the step of allowing the charging station to charge the battery pack when the connection of the battery pack to the charging station is complete, the method further comprises:
detecting a low current signal output by the charging station in real time;
when the small current signal does not belong to a preset interval, acquiring the duration of the small current signal outside the preset interval;
when the duration is longer than a preset duration, judging that the battery pack is abnormally charged;
and when the battery pack is abnormally charged, disconnecting the battery pack from the charging station and entering a sleep mode.
4. The method of claim 3, wherein after the step of determining that the battery pack is abnormally charged when the duration is greater than a preset duration, the method further comprises:
and generating a fault code according to the charging abnormal information of the battery pack, and sending the fault code to terminal equipment.
5. The method of claim 3, wherein after the step of disconnecting the battery pack from the charging station and entering a sleep mode when the battery pack is abnormally charged, the method further comprises:
when a wake-up instruction sent by the charging station is received, switching from the sleep mode to a working mode according to the wake-up instruction;
judging whether the charging confirmation signal and the small current signal meet preset conditions or not;
and when the charging confirmation signal and the small current signal meet a preset condition, establishing connection between the battery pack and the charging station.
6. A battery pack charging connection confirmation apparatus, characterized by comprising: the device comprises an acquisition module, a judgment module and a charging module;
the acquisition module is used for acquiring a charging confirmation signal and a low current signal output by the charging station when the battery pack is connected with the charging station;
the judging module is used for judging that the connection between the battery pack and the charging station is finished when the charging confirmation signal and the small current signal meet a preset connection finishing condition;
the charging module is used for allowing the charging station to charge the battery pack when the connection between the battery pack and the charging station is completed.
7. The battery pack charging connection confirmation apparatus according to claim 6, wherein the obtaining module is further configured to determine that the battery pack is abnormally connected to the charging station when the charging confirmation signal and/or the small current signal do not satisfy a preset connection completion condition; and when the battery pack is abnormally connected with the charging station, sending abnormal reminding information.
8. The battery pack charging connection confirmation apparatus of claim 6, wherein the charging module is further configured to detect a low current signal output by the charging station in real time; when the small current signal does not belong to a preset interval, acquiring the duration of the small current signal outside the preset interval; when the duration is longer than a preset duration, judging that the battery pack is abnormally charged; and when the battery pack is abnormally charged, disconnecting the battery pack from the charging station and entering a sleep mode.
9. The battery pack charging connection confirmation apparatus according to claim 8, wherein the charging module is further configured to generate a fault code according to the charging abnormality information of the battery pack, and send the fault code to a terminal device.
10. The battery pack charging connection confirmation apparatus according to claim 8, wherein the charging module is further configured to switch from the sleep mode to the operating mode according to a wake-up command sent by the charging station when receiving the wake-up command; judging whether the charging confirmation signal and the small current signal meet preset conditions or not; and when the charging confirmation signal and the small current signal meet a preset condition, establishing connection between the battery pack and the charging station.
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