Battery heating system and method

Abstract

The invention provides a battery heating system and method. The method comprises the steps that in a charging state or a discharging state, a control module is used for obtaining the battery temperature, sent by a temperature monitoring module, in a battery pack; if the battery temperature is smaller than the preset battery temperature, a control module is used for sending a heating starting instruction to a heating control module; a heating switch connected with a heating piece is closed by a heating module based on a heating starting instruction, so that the battery pack is heated by the heating piece, the heating module comprises the heating module and the heating switch, and the heating piece is controlled by the heating module to heat batteries in the battery pack in a low-temperature state of the batteries; and the problem that the battery cannot be normally charged or discharged due to too low temperature is avoided, so that the overall performance and reliability of the equipment are improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of battery heating, and in particular to a battery heating system and method. Background Art

[0002] With the rapid development of science and technology, batteries, as key components for energy storage and conversion, play a vital role in various electronic devices, electric vehicles and energy storage systems.

[0003] However, the performance of batteries is significantly affected by the ambient temperature, especially under extremely low temperature conditions, the chemical reaction rate inside the battery will drop significantly, resulting in the battery being unable to charge and discharge normally. This not only limits the application of batteries in cold regions, but also affects the overall performance and reliability of the equipment. Summary of the invention

[0004] The present disclosure provides a battery heating system and method.

[0005] According to a first aspect of the present disclosure, a battery heating system is provided, the system comprising:

[0006] Battery pack, heating control module, heating sheet, control module and temperature monitoring module;

[0007] The temperature monitoring module is connected to the battery pack, and the temperature monitoring module is used to monitor the battery temperature in the battery pack;

[0008] The control module is connected to the temperature monitoring module and the heating control module respectively, and is used to obtain the battery temperature in the battery pack monitored by the temperature monitoring module in the charging state or the discharging state, and send a heating start instruction to the heating control module based on the battery temperature;

[0009] The heating control module includes a heating module and a heating switch. The heating module is connected to the heating plate through the heating switch. The heating plate is placed between multiple batteries in the battery pack. The heating module is used to close the heating switch based on the start heating instruction so that the heating plate heats the battery pack.

[0010] In some embodiments of the present disclosure, the temperature monitoring module includes: a thermistor, the thermistor being disposed on the battery pack;

[0011] The thermistor adjusts the voltage across the terminals based on the battery pack’s cell temperature;

[0012] The temperature monitoring module is used to obtain the voltage across the thermistor and convert the voltage into battery temperature using a preset voltage-temperature mapping relationship.

[0013] In some embodiments of the present disclosure, the battery heating system further includes: a current monitoring module, a relay control module, and a relay;

[0014] The current monitoring module is connected to the control module, and the relay control module is connected to the control module and the relay respectively;

[0015] The current monitoring module is used to monitor the discharge current in the discharge state and send the discharge current to the control module;

[0016] The relay control module includes a relay drive circuit and a relay switch;

[0017] The relay driving circuit is used to receive a cut-off signal sent by the control module based on the discharge current to disconnect the relay switch so that the relay stops discharging.

[0018] In some embodiments of the present disclosure, the current monitoring module is connected to the battery pack and the control module respectively;

[0019] The current monitoring module is used to monitor the current of the battery pack. If the current monitoring module detects the current of the battery pack, the current is sent to the control module so that the control module generates load connected information.

[0020] In some embodiments of the present disclosure, the battery heating system further includes: a charging detection module and a discharging detection module;

[0021] The charging detection module is connected to the control module, and the discharging detection module is connected to the control module;

[0022] The charging detection module is used to record the charging number and charging time corresponding to the charging signal in the charging state, and send the charging number and charging time to the control module;

[0023] The discharge detection module is used to receive the load connection information sent by the control module in the discharge state, record the discharge number and discharge time corresponding to the discharge signal, and send the discharge number and discharge time to the control module.

[0024] In some embodiments of the present disclosure, the battery heating system also includes: a key input module, which is connected to the control module; the key input module is used to obtain key information and send the key information to the electric control module so that the control module parses the key information to determine the charging state or the discharging state.

[0025] According to a second aspect of the present disclosure, a battery heating method is provided, which is used in the battery heating system described in the first aspect above, and the method includes: in a charging state or a discharging state, using a control module to obtain the battery temperature in the battery pack sent by a temperature monitoring module; if the battery temperature is lower than a preset battery temperature, using the control module to send a start heating instruction to a heating control module; using the heating module to close a heating switch connected to a heating plate based on the start heating instruction, so that the heating plate heats the battery pack, and the heating module includes a heating module and a heating switch.

[0026] In some embodiments of the present disclosure, a heating module is used to close a heating switch connected to a heating plate based on a start heating instruction so that the heating plate heats the battery pack, including: using a control module to obtain a heated battery temperature of the battery pack sent by a temperature monitoring module, the heated battery temperature being the battery temperature of the battery pack after being heated by the heating plate; if the heated battery temperature is equal to a preset battery temperature, the control module is used to send a cancel heating instruction to the heating module; and the heating module is used to disconnect the heating switch based on the cancel heating instruction so that the heating plate stops heating the battery pack.

[0027] In some embodiments of the present disclosure, the temperature monitoring module includes a thermistor. Before using the control module to obtain the battery temperature in the battery pack sent by the temperature monitoring module, the method includes: using the temperature monitoring module to obtain the voltage across the thermistor, and the thermistor is set on the battery pack; using the temperature monitoring module to convert the voltage into the battery temperature based on a preset voltage-temperature mapping relationship, and sending the battery temperature to the control module.

[0028] In some embodiments of the present disclosure, in a charging state or a discharging state, after using the control module to obtain the battery temperature in the battery pack sent by the temperature monitoring module, the method also includes: in a discharging state, using the control module to obtain the discharge current sent by the current monitoring module; if the discharge current is greater than a preset multiple of the current required by the load, using the control module to send a cut-off signal to the relay control module after a preset delay time; using the relay drive circuit to disconnect the relay switch connected to the relay based on the cut-off signal to stop the relay from discharging, the relay control module including a relay drive circuit and a relay switch.

[0029] In some embodiments of the present disclosure, in the charging state or the discharging state, after using the control module to obtain the battery temperature in the battery pack sent by the temperature monitoring module, the method also includes: in the charging state, using the charging detection module to record the number of charging times and charging time corresponding to the charging signal, and sending the number of charging times and charging time to the control module; in the discharging state and receiving the load connected information sent by the control module, using the discharge detection module to record the number of discharge times and discharge time corresponding to the discharge signal, and sending the number of discharge times and discharge time to the control module, the load connected information is generated by using the control module to receive the current of the battery pack sent by the current monitoring module.

[0030] In some embodiments of the present disclosure, in the charging state or the discharging state, before using the control module to obtain the battery temperature in the battery pack sent by the temperature monitoring module, the method also includes: using the control module to receive key information sent by the key input module, and using the control module to parse the key information to determine the charging state or the discharging state.

[0031] According to a third aspect of the present disclosure, there is provided an electronic device, including:

[0032] at least one processor; and

[0033] a memory communicatively connected to the at least one processor; wherein,

[0034] The memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to execute the method described in the second aspect.

[0035] According to a fourth aspect of the present disclosure, a non-transitory computer-readable storage medium storing computer instructions is provided, wherein the computer instructions are used to enable the computer to execute the method described in the second aspect.

[0036] According to a fifth aspect of the present disclosure, a vehicle is provided, comprising the battery heating device according to the first aspect or the electronic device according to the third aspect.

[0037] The battery heating method, device, electronic device and storage medium provided by the present disclosure use a control module to obtain the battery temperature in the battery pack sent by the temperature monitoring module in the charging state or the discharging state; if the battery temperature is lower than the preset battery temperature, the control module sends a start heating instruction to the heating control module; the heating module closes the heating switch connected to the heating plate based on the start heating instruction so that the heating plate heats the battery pack. The heating module includes a heating module and a heating switch, so that when the battery is in a low temperature state, the heating module controls the heating plate to heat the battery in the battery pack, thereby avoiding the problem that the battery cannot be charged or discharged normally due to too low temperature, thereby improving the overall performance and reliability of the device.

[0038] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present application, nor is it intended to limit the scope of the present application. Other features of the present application will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The accompanying drawings are used to better understand the present solution and do not constitute a limitation of the present disclosure.

[0040] Figure 1 A schematic diagram of a battery heating system provided by an embodiment of the present disclosure;

[0041] Figure 2 A schematic diagram of a specific battery heating system provided by an embodiment of the present disclosure;

[0042] Figure 3 A schematic diagram of a battery heating method provided in an embodiment of the present disclosure;

[0043] Figure 4 A schematic diagram of a flow chart of another battery heating method provided by an embodiment of the present disclosure;

[0044] Figure 5 A schematic diagram of a flow chart of another battery heating method provided by an embodiment of the present disclosure;

[0045] Figure 6 A schematic diagram of the structure of a battery heating device provided in an embodiment of the present disclosure;

[0046] Figure 7 A schematic block diagram of an exemplary electronic device 700 provided for an embodiment of the present disclosure. DETAILED DESCRIPTION

[0047] The following is a description of exemplary embodiments of the present disclosure in conjunction with the accompanying drawings, including various details of the embodiments of the present disclosure to facilitate understanding, which should be considered as merely exemplary. Therefore, it should be recognized by those of ordinary skill in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the present disclosure. Similarly, for the sake of clarity and conciseness, descriptions of well-known functions and structures are omitted in the following description.

[0048] In order to solve the problems in the related art, the battery heating method proposed in the present disclosure automatically detects the battery temperature when the battery pack receives a charge or discharge signal through an integrated temperature monitoring and control mechanism. If the temperature is lower than the preset battery temperature, the control module sends a command to the heating module to activate the heating sheet to heat the battery pack, ensuring that the battery is charged and discharged normally at an appropriate temperature, thereby effectively avoiding the performance degradation caused by low temperature and significantly improving the overall performance and operating reliability of the device.

[0049] The battery heating system, method, device, electronic device, and storage medium according to embodiments of the present disclosure are described below with reference to the accompanying drawings.

[0050] Figure 1 A schematic diagram of a battery heating system provided by an embodiment of the present disclosure is shown in FIG. Figure 2 Schematic diagram of a specific battery heating system provided by an embodiment of the present disclosure. Figure 1 As shown, the system includes:

[0051] Battery pack 1, heating control module 2, heating sheet 3, control module 4 and temperature monitoring module 5;

[0052] The temperature monitoring module 5 is connected to the battery pack 1, and the temperature monitoring module 5 is used to monitor the battery temperature in the battery pack 1;

[0053] The control module 4 is connected to the temperature monitoring module 5 and the heating control module 2 respectively, and is used to obtain the battery temperature in the battery pack 1 monitored by the temperature monitoring module 5 in the charging state or the discharging state, and send a heating start instruction to the heating control module 2 based on the battery temperature;

[0054] The heating control module 2 includes a heating module 21 and a heating switch 22. The heating module 21 is connected to the heating sheet 3 via the heating switch 22. The heating sheet 3 is placed between multiple batteries in the battery pack 1. The heating module 21 is used to close the heating switch 22 based on the start heating instruction so that the heating sheet 3 heats the battery pack 1.

[0055] The battery heating system disclosed herein can ensure that the battery pack can operate within an appropriate temperature range through precise temperature control and timely heating, thereby extending the battery life, improving safety, and optimizing its energy output.

[0056] The battery pack 1 may be composed of a plurality of single cells connected in series or in parallel to store and provide electrical energy. In a low temperature environment, the chemical reaction speed inside the battery will slow down, resulting in a decrease in battery performance, including a slow charging speed, a reduced discharge capacity, etc. The battery pack 1 of the present disclosure may also be connected to a control module 4.

[0057] The temperature monitoring module can be an NTC (Negative Temperature Coefficient) temperature monitoring module. The temperature monitoring module 5 is directly connected to the battery pack 1 through a sensor, and is used to monitor the temperature of each key position in the battery pack 1 (such as between battery cells, battery pack surface, etc.) in real time. The monitored temperature data is sent to the control module 4 to provide a basis for the control module's decision.

[0058] The control module 4 may be a main control module MCU, and the control module 4 may receive the battery temperature sent from the temperature monitoring module 5. When the battery heating system receives a charge or discharge signal, the control module 4 will first query the current battery temperature. If the temperature is lower than the preset battery temperature (e.g., 20°C), the control module 4 will send a start heating instruction to the heating control module 2. In addition, the control module 4 may also be responsible for adjusting the heating power and heating time to ensure that the battery temperature can quickly and smoothly reach a suitable working range.

[0059] Since the heating control module 2 includes a heating module 21 and a heating switch 22, the heating module 21 controls the closing and opening of the heating switch 22 according to the instructions of the control module 4, thereby controlling the working state of the heating plate 3. When the heating switch 22 is closed, the current passes through the heating plate 3 to generate heat and heat the battery pack 1. The heating plate 3 is usually placed between multiple batteries in the battery pack 1 to ensure that the heat can be evenly distributed. After the heating plate 3 is heated by the current, the heat is transferred to the battery pack 1 to increase the battery temperature. The heating plate 3 disclosed in the present invention is an element that actually generates heat. In order to ensure that the heating plate can work stably in a high temperature environment and has good thermal conductivity and safety, the heating plate disclosed in the present invention can be made of materials such as mica board, silicone rubber, stainless steel and copper-nickel alloy. The heating switch 22 can be an NMOS switch.

[0060] In some embodiments of the present disclosure, in order to more accurately monitor the temperature of the battery pack and start the heating process as needed, the present disclosure refers to Figure 2 The temperature monitoring module 5 disclosed in the present invention includes: a thermistor 51, which is arranged on the battery pack 1; the thermistor 51 adjusts the voltage at both ends based on the battery temperature of the battery pack 1; the temperature monitoring module 5 is used to obtain the voltage at both ends of the thermistor 51, and convert the voltage into the battery temperature by using a preset voltage-temperature mapping relationship.

[0061] Specifically, the thermistor 51 is a temperature-sensitive resistor whose resistance value changes with temperature. In the temperature monitoring module, the thermistor 51 is used to monitor the temperature of the battery pack 1. When the battery temperature changes, the resistance value of the thermistor 51 will also change accordingly, which causes the voltage across it to change.

[0062] The temperature monitoring module 5 monitors the voltage across the thermistor 51 and converts the voltage into the actual battery temperature using a preset voltage-temperature mapping relationship (also referred to as a calibration curve or a lookup table).

[0063] In the conversion process, the temperature monitoring module 5 will search for the temperature corresponding to the voltage across the thermistor 51. This mapping relationship is determined by experiments during the manufacturing process and stored in the memory of the temperature monitoring module 5. The specific value is based on actual conditions and is not limited in the embodiment of the present disclosure. The temperature monitoring module 5 sends the converted temperature to the control module 4 for further decision-making and control.

[0064] In some embodiments of the present disclosure, in order to enhance the safety and controllability of the battery heating system, in addition to the temperature monitoring and heating control functions mentioned above, the control module 4 can also receive the discharge current from the current monitoring module 6, and determine whether the discharge circuit needs to be cut off based on the relationship between the current discharge current and the current required by the load.

[0065] Reference Figure 2 The battery heating system disclosed in the present invention further includes: a current monitoring module 6, a relay control module 7 and a relay 8; the current monitoring module 6 is connected to the control module 4, and the relay control module 7 is connected to the control module 4 and the relay 8 respectively; the current monitoring module 6 is used to monitor the discharge current in the discharge state and send the discharge current to the control module 4; the relay control module 7 includes a relay drive circuit 71 and a relay switch 72; the relay drive circuit 72 is used to receive a cut-off signal sent by the control module 4 based on the discharge current to disconnect the relay switch 72, so that the relay 8 stops discharging.

[0066] The magnitude of the discharge current is directly related to the performance and safety of the battery pack 1 and the load. Excessive discharge current may cause damage to the battery pack 1 and the load.

[0067] If the discharge current is greater than a preset multiple of the current required by the load, the control module 4 sends a cut-off signal to the relay drive circuit 71 after a preset delay time (e.g., 2s). When the relay drive circuit 71 receives the cut-off signal from the control module 4, the relay drive circuit 71 disconnects the relay switch 72, cuts off the current flowing through the relay 8, and thus cuts off the discharge circuit of the battery pack 1. The relay switch 72 may be a NMOS switch.

[0068] It can be understood that when the relay switch 72 is in a closed state, the battery pack 1 can discharge normally; when the relay switch 72 is disconnected, the discharge circuit is cut off and the battery pack 1 stops discharging.

[0069] In some embodiments of the present disclosure, reference Figure 2 , the current monitoring module 6 is connected to the battery pack 1 and the control module 4 respectively; the current monitoring module 6 is used to monitor the current of the battery pack 1. If the current monitoring module 9 detects the current of the battery pack 1, the current monitoring module 6 sends the current to the control module 4. At this time, the control module 4 determines that there is current flowing through the battery pack 1, that is, it determines that the battery pack 1 is connected to the load, and the control module 4 generates load connected information.

[0070] In some embodiments of the present disclosure, in order to improve the system's later operation and maintenance capabilities and data recording functions. Figure 2 , the battery heating system of the present disclosure further includes: a charging detection module 9 and a discharging detection module 10;

[0071] The charging detection module 9 is connected to the control module 4, and the discharging detection module 10 is connected to the control module 4;

[0072] The charging detection module 9 is used to record the charging times and charging time corresponding to the charging signal in the charging state, and send the charging times and charging time to the control module 4;

[0073] The discharge detection module 10 is used to receive the load connection information sent by the control module 4 in the discharge state, record the discharge number and discharge time corresponding to the discharge signal, and send the discharge number and discharge time to the control module 4.

[0074] The disclosure not only helps the system track the charging and discharging activities of the battery pack, but also provides valuable data support for subsequent maintenance and performance analysis.

[0075] In addition, before performing battery heating, the present disclosure also needs to determine whether the current system is in a charging state or a discharging state. Figure 2 The battery heating system of the present disclosure may further include: a key input module 11, the key input module 11 is connected to the control module 4, the key input module 11 is used to obtain key information, and send the key information to the control module 4, so that the control module 4 parses the key information and determines whether the current state is charging or discharging.

[0076] In summary, the battery heating system disclosed in the present invention effectively solves the problem of battery performance degradation in low temperature environments by real-time monitoring of battery temperature and intelligent control of the heating process, thereby improving the overall performance and reliability of the battery pack.

[0077] Figure 3 The figure is a flow chart of a battery heating method provided by an embodiment of the present disclosure. Figure 3 As shown, the method includes:

[0078] Step 101: In a charging state or a discharging state, a control module is used to obtain the battery temperature in a battery pack sent by a temperature monitoring module.

[0079] In some embodiments, the present disclosure needs to determine whether the current state is charging or discharging before using the control module to obtain the battery temperature. Specifically, the present disclosure can use the control module to receive key information sent by the key input module, and use the control module to parse the key information to determine the charging state or the discharging state.

[0080] After determining the charging state or the discharging state, the present disclosure may first use the control module to obtain the battery temperature in the battery pack sent by the temperature monitoring module in the charging state or the discharging state.

[0081] It should be noted that for later maintenance, the present disclosure can record the current charge and discharge data in the charging state or the discharging state, and the charge and discharge data may include the charging time, the number of charges, the discharging time, and the number of discharges. Specifically, in the charging state, the charging detection module is used to record the number of charges and the charging time corresponding to the charging signal, and the number of charges and the charging time are sent to the control module; in the discharging state and receiving the load connected information sent by the control module, the discharge detection module is used to record the number of discharges and the discharge time corresponding to the discharge signal, and the number of discharges and the discharge time are sent to the control module, and the load connected information is generated by the control module receiving the current of the battery pack sent by the current monitoring module.

[0082] Step 102: If the battery temperature is lower than the preset battery temperature, the control module sends a heating start instruction to the heating control module.

[0083] In some embodiments, the preset battery temperature refers to the temperature at which the battery can be charged or discharged. The preset battery temperature in the present disclosure is based on actual conditions, and the specific value is not limited in the embodiments of the present disclosure. The present disclosure takes 20°C as an example.

[0084] It is understandable that if the battery temperature is greater than or equal to the preset battery temperature, the charging action or the discharging action is directly performed.

[0085] Step 103: Using the heating module to close the heating switch connected to the heating plate based on the start heating instruction, so that the heating plate heats the battery pack.

[0086] In some embodiments, the heating module of the present disclosure includes a heating module and a heating switch. The heating module of the present disclosure can turn on the heating switch (NMOS switch) based on a start heating instruction. At this time, current flows through the heating plate to make the heating plate generate heat to heat the battery pack.

[0087] It should be noted that when the heating sheet is used to heat the battery pack, the present disclosure needs to monitor the temperature of the heated battery in real time. When the battery temperature is equal to the preset battery temperature, the heating sheet stops heating the battery pack. Specifically, the present disclosure can use the control module to obtain the heating battery temperature of the battery pack sent by the temperature monitoring module. The heating battery temperature is the battery temperature of the battery pack after being heated by the heating sheet; if the heating battery temperature is equal to the preset battery temperature, the control module is used to send a heating cancellation instruction to the heating module; the heating module is used to disconnect the heating switch based on the heating cancellation instruction, so that the heating sheet stops heating the battery pack.

[0088] In summary, the technical solution provided by the present invention is to use the control module to obtain the battery temperature in the battery pack sent by the temperature monitoring module in the charging state or the discharging state; if the battery temperature is lower than the preset battery temperature, the control module is used to send a start heating instruction to the heating control module; the heating module is used to close the heating switch connected to the heating plate based on the start heating instruction, so that the heating plate heats the battery pack. The heating module includes a heating module and a heating switch, so that when the battery is in a low temperature state, the heating module is used to control the heating plate to heat the battery in the battery pack, thereby avoiding the problem that the battery cannot be charged or discharged normally due to too low temperature, thereby improving the overall performance and reliability of the device.

[0089] As a possible implementation, Figure 4 The flowchart of another battery heating method shown in the figure is based on the above embodiment, and the control module is used to obtain the battery temperature in the battery pack sent by the temperature monitoring module. The previous specific process includes the following steps:

[0090] Step 201: Using a temperature monitoring module to obtain the voltage across a thermistor connected to a battery pack.

[0091] In some embodiments, the temperature monitoring module in the present disclosure includes a thermistor, and the thermistor is disposed on the battery pack. The present disclosure can use the temperature monitoring module to read the voltage across the thermistor. This voltage will change with the change of battery temperature, because the resistance of the thermistor will change with temperature, and the voltage distribution in the circuit will also change accordingly.

[0092] Step 202: Using the temperature monitoring module to convert the voltage into the battery temperature based on a preset voltage-temperature mapping relationship, and sending the battery temperature to the control module.

[0093] In some embodiments, since a preset voltage-temperature mapping relationship can be pre-stored in the temperature monitoring module, the present disclosure can directly use the temperature monitoring module to convert the read voltage into the battery temperature using the preset voltage-temperature mapping relationship, and send the converted battery temperature to the control module.

[0094] In summary, the battery temperature of the battery pack is monitored in real time through the temperature monitoring module, and the battery temperature is sent to the control module to ensure the accuracy and timeliness of data transmission to meet the temperature monitoring needs of the battery heating system.

[0095] As a possible implementation, Figure 5 The flowchart of another battery heating method shown in the figure, based on the above embodiment, the specific process after the control module obtains the battery temperature in the battery pack sent by the temperature monitoring module in the charging state or the discharging state, includes the following steps:

[0096] Step 301: In a discharging state, a control module is used to obtain a discharging current sent by a current monitoring module.

[0097] In some embodiments, in order to enhance the safety of the battery heating system, the present disclosure may utilize a current monitoring module to monitor the discharge current in real time under the discharge state and send the discharge current to a control module.

[0098] Step 302: If the discharge current is greater than a preset multiple of the current required by the load, the control module sends a cut-off signal to the relay control module after a preset delay time.

[0099] In some embodiments, when the discharge current is greater than a preset multiple of the current required by the load (for example, 1.5 times the current required by the load), a discharge short circuit is determined, and the control module sends a cut-off signal to the relay drive circuit after a preset delay (for example, 2s).

[0100] Step 303: Using the relay driving circuit to disconnect the relay switch connected to the relay based on the cut-off signal, so that the relay stops discharging.

[0101] In some embodiments, the relay control module includes a relay drive circuit and a relay switch. The relay drive circuit disconnects the relay switch based on the cut-off signal, that is, cuts off the pull-in of the relay to stop the discharge, so as to ensure that the device and the load are not damaged.

[0102] In summary, the present disclosure protects the battery system and the load equipment connected thereto from being damaged by monitoring the discharge current in real time and promptly cutting off the discharge circuit when an abnormality is found.

[0103] Corresponding to the above-mentioned battery heating method, the present invention further provides a battery heating device. Since the device embodiment of the present invention corresponds to the above-mentioned method embodiment, details not disclosed in the device embodiment can be referred to the above-mentioned method embodiment, and will not be described in detail in the present invention.

[0104] Figure 6 A schematic diagram of the structure of a battery heating device provided in an embodiment of the present disclosure is shown in FIG. Figure 6 As shown, the device comprises:

[0105] An acquisition unit 610 is used to acquire the battery temperature in the battery pack sent by the temperature monitoring module using the control module in a charging state or a discharging state;

[0106] The sending unit 620 is used to send a heating start instruction to the heating control module by using the control module if the battery temperature is lower than the preset battery temperature;

[0107] The heating unit 630 is used to use the heating module to close the heating switch connected to the heating plate based on the start heating instruction so that the heating plate heats the battery pack. The heating module includes a heating module and a heating switch.

[0108] In some embodiments of the present disclosure, the heating unit 630 is used to: use the control module to obtain the heated battery temperature of the battery pack sent by the temperature monitoring module, the heated battery temperature is the battery temperature of the battery pack after being heated by the heating plate; if the heated battery temperature is equal to the preset battery temperature, use the control module to send a cancel heating instruction to the heating module; use the heating module to disconnect the heating switch based on the cancel heating instruction, so that the heating plate stops heating the battery pack.

[0109] In some embodiments of the present disclosure, the temperature monitoring module includes a thermistor, and the device also includes: a conversion unit, which is used to use the temperature monitoring module to obtain the voltage across the thermistor before using the control module to obtain the battery temperature in the battery pack sent by the temperature monitoring module, and the thermistor is set on the battery pack; use the temperature monitoring module to convert the voltage into the battery temperature based on a preset voltage-temperature mapping relationship, and send the battery temperature to the control module.

[0110] In some embodiments of the present disclosure, the device also includes: a safety management unit, which is used to use the control module to obtain the battery temperature in the battery pack sent by the temperature monitoring module in the charging state or the discharging state, and to use the control module to obtain the discharge current sent by the current monitoring module in the discharging state; if the discharge current is greater than a preset multiple of the current required by the load, the control module sends a cut-off signal to the relay control module after a preset delay time; and uses the relay drive circuit to disconnect the relay switch connected to the relay based on the cut-off signal to stop the relay from discharging, and the relay control module includes a relay drive circuit and a relay switch.

[0111] In some embodiments of the present disclosure, the device also includes: a recording unit, which is used to obtain the battery temperature in the battery pack sent by the temperature monitoring module using the control module in the charging state or the discharging state, and then, in the charging state, use the charging detection module to record the number of charging times and charging time corresponding to the charging signal, and send the number of charging times and charging time to the control module; in the discharging state and receiving the load connection information sent by the control module, use the discharge detection module to record the number of discharge times and discharge time corresponding to the discharge signal, and send the number of discharge times and discharge time to the control module, and the load connection information is generated by using the control module to receive the current of the battery pack sent by the current monitoring module.

[0112] In some embodiments of the present disclosure, the device also includes: a parsing unit, which is used to use the control module to receive key information sent by the key input module before using the control module to obtain the battery temperature in the battery pack sent by the temperature monitoring module in the charging state or the discharging state, and use the control module to parse the key information to determine the charging state or the discharging state.

[0113] It should be noted that the above explanation of the method embodiment is also applicable to the device of this embodiment, and the principle is the same, which is not limited in this embodiment.

[0114] According to an embodiment of the present disclosure, the present disclosure also provides an electronic device and a readable storage medium.

[0115] Figure 7 A schematic block diagram of an example electronic device 700 that can be used to implement an embodiment of the present disclosure is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present disclosure described and / or required herein.

[0116] like Figure 7 As shown, the device 700 includes a computing unit 701, which can perform various appropriate actions and processes according to a computer program stored in a ROM (Read-Only Memory) 702 or a computer program loaded from a storage unit 708 to a RAM (Random Access Memory) 703. In the RAM 703, various programs and data required for the operation of the device 700 can also be stored. The computing unit 701, the ROM 702, and the RAM 703 are connected to each other via a bus 704. An I / O (Input / Output) interface 705 is also connected to the bus 704.

[0117] A number of components in the device 700 are connected to the I / O interface 705, including: an input unit 706, such as a keyboard, a mouse, etc.; an output unit 707, such as various types of displays, speakers, etc.; a storage unit 708, such as a disk, an optical disk, etc.; and a communication unit 709, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 709 allows the device 700 to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0118] The computing unit 701 may be a variety of general and / or special processing components with processing and computing capabilities. Some examples of the computing unit 701 include, but are not limited to, a CPU (Central Processing Unit), a GPU (Graphic Processing Units), various dedicated AI (Artificial Intelligence) computing chips, various computing units that run machine learning model algorithms, a DSP (Digital Signal Processor), and any appropriate processor, controller, microcontroller, etc. The computing unit 701 performs the various methods and processes described above, such as a battery heating method. For example, in some embodiments, the battery heating method may be implemented as a computer software program that is tangibly contained in a machine-readable medium, such as a storage unit 708. In some embodiments, part or all of the computer program may be loaded and / or installed on the device 700 via the ROM 702 and / or the communication unit 709. When the computer program is loaded into the RAM 703 and executed by the computing unit 701, one or more steps of the method described above may be performed. Alternatively, in other embodiments, the computing unit 701 may be configured to execute the aforementioned battery heating method in any other appropriate manner (for example, by means of firmware).

[0119] Various embodiments of the systems and techniques described above herein may be implemented in digital electronic circuit systems, integrated circuit systems, FPGAs (Field Programmable Gate Arrays), ASICs (Application-Specific Integrated Circuits), ASSPs (Application Specific Standard Products), SOCs (System On Chips), CPLDs (Complex Programmable Logic Devices), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include: being implemented in one or more computer programs that may be executed and / or interpreted on a programmable system including at least one programmable processor that may be a dedicated or general-purpose programmable processor that may receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0120] The program code for implementing the method of the present disclosure may be written in any combination of one or more programming languages. These program codes may be provided to a processor or controller of a general-purpose computer, a special-purpose computer, or other programmable data processing device, so that the program code, when executed by the processor or controller, enables the functions / operations specified in the flow chart and / or block diagram to be implemented. The program code may be executed entirely on the machine, partially on the machine, partially on the machine and partially on a remote machine as a stand-alone software package, or entirely on a remote machine or server.

[0121] In the context of the present disclosure, a machine-readable medium may be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, device, or equipment. A machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or device, or any suitable combination of the foregoing. More specific examples of machine-readable storage media may include electrical connections based on one or more lines, portable computer disks, hard disks, RAM, ROM, EPROM (Electrically Programmable Read-Only-Memory) or flash memory, optical fiber, CD-ROM (Compact Disc Read-Only Memory), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

[0122] To provide interaction with a user, the systems and techniques described herein can be implemented on a computer having: a display device (e.g., a CRT (Cathode-Ray Tube) or LCD (Liquid Crystal Display) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user can provide input to the computer. Other types of devices can also be used to provide interaction with the user; for example, the feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including acoustic input, voice input, or tactile input).

[0123] The systems and techniques described herein may be implemented in a computing system that includes backend components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes frontend components (e.g., a user computer with a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such backend components, middleware components, or frontend components. The components of the system may be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: LAN (Local Area Network), WAN (Wide Area Network), the Internet, and blockchain networks.

[0124] A computer system may include a client and a server. The client and the server are generally remote from each other and usually interact through a communication network. The relationship between the client and the server is generated by computer programs running on the corresponding computers and having a client-server relationship with each other. The server may be a cloud server, also known as a cloud computing server or cloud host, which is a host product in the cloud computing service system to solve the defects of difficult management and weak business scalability in traditional physical hosts and VPS services ("Virtual Private Server", or "VPS" for short). The server may also be a server of a distributed system, or a server combined with a blockchain.

[0125] It should be noted that artificial intelligence is a discipline that studies how computers can simulate certain human thought processes and intelligent behaviors (such as learning, reasoning, thinking, planning, etc.), and includes both hardware-level and software-level technologies. Artificial intelligence hardware technologies generally include technologies such as sensors, dedicated artificial intelligence chips, cloud computing, distributed storage, and big data processing; artificial intelligence software technologies mainly include computer vision technology, speech recognition technology, natural language processing technology, as well as machine learning / deep learning, big data processing technology, knowledge graph technology, and other major directions.

[0126] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps recorded in this disclosure can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solutions disclosed in this disclosure can be achieved, and this document does not limit this.

[0127] The above specific implementations do not constitute a limitation on the protection scope of the present disclosure. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A battery heating system, characterized in that: The system comprises: Battery pack, heating control module, heating sheet, control module and temperature monitoring module; The temperature monitoring module is connected to the battery pack, and the temperature monitoring module is used to monitor the battery temperature in the battery pack; The control module is connected to the temperature monitoring module and the heating control module respectively, and is used to obtain the battery temperature in the battery pack monitored by the temperature monitoring module in a charging state or a discharging state, and send a heating start instruction to the heating control module based on the battery temperature; The heating control module includes a heating module and a heating switch. The heating module is connected to the heating plate through the heating switch. The heating plate is placed between multiple batteries in the battery pack. The heating module is used to close the heating switch based on the start heating instruction so that the heating plate heats the battery pack.

2. The battery heating system according to claim 1, characterized in that: The temperature monitoring module includes: a thermistor, and the thermistor is arranged on the battery pack; The thermistor adjusts the voltage across both ends based on the battery temperature of the battery pack; The temperature monitoring module is used to obtain the voltage across the thermistor and convert the voltage into the battery temperature using a preset voltage-temperature mapping relationship.

3. The battery heating system according to claim 1, characterized in that: The battery heating system further includes: a current monitoring module, a relay control module and a relay; The current monitoring module is connected to the control module, and the relay control module is connected to the control module and the relay respectively; The current monitoring module is used to monitor the discharge current in the discharge state and send the discharge current to the control module; The relay control module includes a relay drive circuit and a relay switch; The relay driving circuit is used to receive a cut-off signal sent by the control module based on the discharge current to disconnect the relay switch so that the relay stops discharging.

4. The battery heating system according to claim 3, characterized in that: The current monitoring module is connected to the battery pack and the control module respectively; The current monitoring module is used to monitor the current of the battery pack. If the current monitoring module monitors the current of the battery pack, the current is sent to the control module so that the control module generates load connected information.

5. The battery heating system according to claim 4, characterized in that: The battery heating system further includes: a charging detection module and a discharging detection module; The charging detection module is connected to the control module, and the discharging detection module is connected to the control module; The charging detection module is used to record the charging number and charging time corresponding to the charging signal in the charging state, and send the charging number and the charging time to the control module; The discharge detection module is used to receive the load connection information sent by the control module in the discharge state, record the number of discharges and the discharge time corresponding to the discharge signal, and send the number of discharges and the discharge time to the control module.

6. The battery heating system according to claim 1, characterized in that: The battery heating system further includes: a key input module, the key input module being connected to the control module; The key input module is used to obtain key information and send the key information to the electric control module, so that the control module analyzes the key information to determine the charging state or the discharging state.

7. A battery heating method, characterized in that: The method is used for the battery heating system according to any one of claims 1 to 6, and the method comprises: In a charging state or a discharging state, the control module is used to obtain the battery temperature in the battery pack sent by the temperature monitoring module; If the battery temperature is lower than a preset battery temperature, the control module is used to send a heating start instruction to a heating control module; A heating module is used to close a heating switch connected to a heating plate based on the start heating instruction, so that the heating plate heats the battery pack. The heating module includes the heating module and the heating switch.

8. The method according to claim 7, characterized in that The method of using the heating module to close a heating switch connected to the heating sheet based on the heating start instruction so that the heating sheet heats the battery pack includes: Using the control module to obtain the heating battery temperature of the battery pack sent by the temperature monitoring module, the heating battery temperature is the battery temperature of the battery pack after being heated by the heating sheet; If the heating battery temperature is equal to the preset battery temperature, using the control module to send a heating cancellation instruction to the heating module; The heating module is used to turn off the heating switch based on the cancellation heating instruction, so that the heating plate stops heating the battery pack.

9. The method according to claim 7, characterized in that: The temperature monitoring module includes a thermistor. Before using the control module to obtain the battery temperature in the battery pack sent by the temperature monitoring module, the method includes: Using the temperature monitoring module to obtain the voltage across the thermistor, the thermistor being arranged on the battery pack; The temperature monitoring module is used to convert the voltage into the battery temperature based on a preset voltage-temperature mapping relationship, and the battery temperature is sent to the control module.

10. The method according to claim 7, characterized in that After obtaining the battery temperature in the battery pack sent by the temperature monitoring module using the control module in the charging state or the discharging state, the method further includes: In the discharge state, using the control module to obtain the discharge current sent by the current monitoring module; If the discharge current is greater than a preset multiple of the current required by the load, the control module is used to send a cut-off signal to the relay control module after a preset delay time; The relay drive circuit is used to disconnect the relay switch connected to the relay based on the cut-off signal, so that the relay stops discharging. The relay control module includes the relay drive circuit and the relay switch.

11. The method according to claim 7, characterized in that After obtaining the battery temperature in the battery pack sent by the temperature monitoring module using the control module in the charging state or the discharging state, the method further includes: In the charging state, using a charging detection module to record the number of charging times and the charging time corresponding to the charging signal, and sending the number of charging times and the charging time to the control module; In the discharge state and receiving the load connected information sent by the control module, the discharge detection module is used to record the number of discharges and the discharge time corresponding to the discharge signal, and the number of discharges and the discharge time are sent to the control module. The load connected information is generated by receiving the current of the battery pack sent by the current monitoring module by the control module.

12. The method according to claim 7, characterized in that Before obtaining the battery temperature in the battery pack sent by the temperature monitoring module using the control module in the charging state or the discharging state, the method further includes: The control module is used to receive the key information sent by the key input module, and the control module is used to analyze the key information to determine the charging state or the discharging state.

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