A battery control method, device and system

Abstract

This invention discloses a battery control method, apparatus, and system. The battery control method provided by this invention includes acquiring temperature information from a switching module and first current information collected by a sampling module; determining the operating state of the power battery based on the temperature information and the first current information; wherein the operating state includes a normal operating state and an overload state; and adjusting the operating parameters of the power battery based on the overload state of the power battery to control the power battery to operate in the normal operating state. The technical solution provided by this invention, by determining the operating state of the power battery to adjust its operating parameters, achieves timely adjustment of the power battery's operating state and improves the safety of the power battery.

Description

Technical Field

[0001] This invention relates to the field of power battery technology, and in particular to a battery control method, device and system. Background Technology

[0002] Power batteries are widely used in electric vehicles and other fields. Overloading a power battery can pose significant safety hazards. However, existing battery control systems are ineffective at monitoring overload conditions, failing to detect and respond promptly, potentially leading to safety issues. Therefore, a better control method is needed to monitor power batteries and protect their internal components. Summary of the Invention

[0003] This invention provides a battery control method, device, and system to solve the problem that existing power battery control systems are unable to detect overload conditions in a timely manner, resulting in low power battery safety.

[0004] According to one aspect of the present invention, a battery control method is provided, the battery control method being applied to a battery control system, the battery control system including a control device, a power battery, a switching module and a sampling module, the control device being connected to the switching module and the sampling module, the switching module being connected between the power battery and the sampling module;

[0005] The battery control method includes:

[0006] Acquire the temperature information from the switching module and the first current information collected by the sampling module;

[0007] The operating state of the power battery is determined based on the temperature information and the first current information; wherein the operating state includes normal operating state and overload state;

[0008] Based on the overload state of the power battery, the operating parameters of the power battery are adjusted to control the power battery to operate in a normal operating state.

[0009] Optionally, obtain the temperature information of the switching module, including:

[0010] Obtain the first temperature information of the relay;

[0011] Obtain the second temperature information of the fuse;

[0012] The switching module includes a relay and a fuse.

[0013] Optionally, determining the operating state of the power battery based on the temperature information and the first current information includes:

[0014] The first temperature information of the relay within a first preset time period is compared with a first preset threshold to obtain a first comparison result;

[0015] The second temperature information of the fuse within a second preset time is compared with a second preset threshold to obtain a second comparison result;

[0016] The first current information collected by the sampling module is compared with a third preset threshold to obtain a third comparison result;

[0017] The operating state of the power battery is determined based on the first comparison result, the second comparison result, and the third comparison result.

[0018] Optionally, the operating state of the power battery is determined based on the first comparison result, the second comparison result, and the third comparison result, including:

[0019] If the first temperature information within the first preset time exceeds the first preset threshold and / or the second temperature information within the second preset time exceeds the second preset threshold, and the first current information exceeds the third preset threshold, then the power battery is determined to be in an overload state.

[0020] Optionally, the operating parameters of the power battery are adjusted according to the overload state of the power battery to control the power battery to operate in a normal operating state, including:

[0021] When the power battery is in an overload state, the power battery is controlled to reduce its output power.

[0022] Optionally, after controlling the power battery to reduce its output power when the power battery is in an overload state, the method further includes:

[0023] Obtain the second current information collected by the sampling module;

[0024] The second current information of the sampling module within a third preset time period is compared with the first current information to obtain a fourth comparison result;

[0025] Based on the fourth comparison result, the fault condition of the power battery is determined.

[0026] Optionally, based on the fourth comparison result, the fault condition of the power battery is determined, including:

[0027] If the second current information is less than the first current information, then the power battery is determined to be fault-free.

[0028] If the second current information is greater than or equal to the first current information, then the power battery is determined to have a short circuit fault.

[0029] Optionally, after determining the fault condition of the power battery based on the fourth comparison result, the method further includes:

[0030] If the power battery experiences a short circuit fault, the power battery circuit will be disconnected.

[0031] Preferably, after acquiring the first current information collected by the sampling module, the method further includes:

[0032] Obtain the third temperature information from the sampling module;

[0033] The first current information is corrected based on the third temperature information.

[0034] In a second aspect, embodiments of the present invention provide a control device, comprising:

[0035] The acquisition module is used to acquire the temperature information of the switching module and the first current information collected by the sampling module;

[0036] The judgment module is used to determine the operating state of the power battery based on the temperature information and the first current information; wherein the operating state includes a normal state and an overload state;

[0037] The adjustment module is used to adjust the operating parameters of the power battery according to the overload state of the power battery, so as to control the power battery to work in the normal operating state.

[0038] Thirdly, embodiments of the present invention provide a battery control system, including a control device, a power battery, a switching module, and a sampling module. The control device is connected to the switching module and the sampling module, and the switching module is connected between the power battery and the sampling module.

[0039] The battery control method of this invention is applied to a battery control system, which includes a control device, a power battery, a switching module, and a sampling module. The control device is connected to the switching module and the sampling module. The switching module is connected between the power battery and the sampling module. By acquiring temperature information from the switching module and first current information collected by the sampling module, the operating state of the power battery is determined based on the temperature information and the first current information. Based on the overload state of the power battery, the operating parameters of the power battery are adjusted to control the power battery to operate in a normal operating state. By determining the operating state of the power battery and adjusting its operating parameters, the normal operation of the power battery is maintained, thus improving the safety of the power battery.

[0040] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0041] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0042] Figure 1 This is a flowchart of a battery control method provided in an embodiment of the present invention;

[0043] Figure 2 This is a flowchart of another battery control method provided in an embodiment of the present invention;

[0044] Figure 3 This is a flowchart of another battery control method provided in an embodiment of the present invention;

[0045] Figure 4 This is a flowchart of another battery control method provided in an embodiment of the present invention;

[0046] Figure 5 This is a flowchart of another battery control method provided in an embodiment of the present invention;

[0047] Figure 6 This is a flowchart of another battery control method provided in an embodiment of the present invention;

[0048] Figure 7 This is a flowchart of another battery control method provided in an embodiment of the present invention;

[0049] Figure 8 This is a flowchart of another battery control method provided in an embodiment of the present invention;

[0050] Figure 9 This is a flowchart of another battery control method provided in an embodiment of the present invention;

[0051] Figure 10 This is a schematic diagram of the structure of a control device provided in an embodiment of the present invention;

[0052] Figure 11 This is a schematic diagram of a battery control system provided in an embodiment of the present invention. Detailed Implementation

[0053] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0054] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0055] Figure 1 This is a flowchart of a battery control method provided in an embodiment of the present invention. See also... Figure 1 The battery control method provided in this embodiment of the invention is applied to a battery control system. The battery control system includes a control device, a power battery, a switching module, and a sampling module. The control device is connected to the switching module and the sampling module, and the switching module is connected between the power battery and the sampling module.

[0056] The battery control method includes:

[0057] S101. Obtain the temperature information of the switching module and the first current information collected by the sampling module.

[0058] Specifically, the switching module of the power battery can control the operating state of the power battery circuit. When the switching circuit is open, the power battery stops operating; when the switching module is closed, the power battery operates. During operation, the current flowing through the switching module generates heat. By acquiring the temperature information of the switching module and the initial current information of the power battery collected by the sampling module, the operating state of the power battery can be determined.

[0059] S102. Determine the operating status of the power battery based on the temperature information and the first current information.

[0060] The operating state includes normal operating state and overload state.

[0061] Specifically, the operating status of the power battery can be determined based on the temperature information from the switching module and the first current information collected by the sampling module. When the temperature information of the switching module exceeds the safe temperature threshold, and the first current information collected by the sampling module exceeds the safe current threshold, it can be determined that the power battery is in an overload state. This setting can determine the status of the power battery based on its temperature and current information, improving accuracy.

[0062] S103. Adjust the operating parameters of the power battery according to the overload state of the power battery, so as to control the power battery to work in the normal operating state.

[0063] Specifically, when a power battery is under overload, the internal current exceeds the safe current threshold, and the temperature rises above the safe temperature threshold. Continuing to operate the battery will result in a safety malfunction. In this situation, it's necessary to adjust the battery's operating parameters, such as reducing the operating power, to decrease the output current and gradually lower the temperature, allowing the battery to return to normal operation. This setting maintains the battery's normal operation and improves its safety.

[0064] For example, during operation, the power battery acquires temperature information from the switching module and first current information from the sampling module. When the temperature of the switching module exceeds a safe temperature threshold, or the first current information from the sampling module exceeds a safe current threshold, it can be determined that the power battery is in an overload state. At this time, it is necessary to adjust the operating parameters of the power battery, such as reducing the operating power, so that the current of the power battery decreases, the temperature gradually drops, and the power battery returns to normal operation.

[0065] The battery control method provided in this embodiment determines the operating state of the power battery by acquiring temperature information from the switching module and first current information collected by the sampling module. When the power battery is in an overload state, the operating parameters of the power battery are adjusted to control the power battery to operate in a normal operating state. This setting maintains the normal operation of the power battery and improves its safety.

[0066] Optional, Figure 2 This is a flowchart of another battery control method provided in an embodiment of the present invention. Based on the above embodiments, see [link to other embodiments]. Figure 2 The battery control method provided in this embodiment of the invention includes:

[0067] S201, Obtain the first temperature information of the relay.

[0068] Specifically, the switching module includes relays and fuses. The relays are used to control the on / off state of the power battery circuit. When the current from the power battery passes through the relays, it generates initial temperature information, which can be used to determine the operating status of the power battery.

[0069] S202, Obtain the second temperature information of the fuse.

[0070] The switching module includes a relay and a fuse.

[0071] Specifically, the fuse is used to protect the power battery by melting when the temperature exceeds a preset threshold. When the current from the power battery passes through the fuse, it generates a second temperature reading, which can be used to determine the operating status of the power battery.

[0072] S203. Obtain the first current information collected by the sampling module.

[0073] Specifically, the sampling module includes a conductor section. The module can collect the voltage of this conductor and calculate the initial current information of the power battery during operation based on its known resistance. This initial current information can be used to determine the operating state of the power battery. This configuration allows for the determination of the power battery's state using multiple parameters, further improving accuracy.

[0074] S102. Determine the operating state of the power battery based on the temperature information and the first current information; wherein the operating state includes normal operating state and overload state.

[0075] S103. Adjust the operating parameters of the power battery according to the overload state of the power battery, so as to control the power battery to work in the normal operating state.

[0076] Optional, Figure 3 This is a flowchart of another battery control method provided in an embodiment of the present invention. Based on the above embodiments, see [link to other embodiments]. Figure 3 The battery control method provided in this embodiment of the invention includes:

[0077] S201, Obtain the first temperature information of the relay.

[0078] S202, Obtain the second temperature information of the fuse.

[0079] S203. Obtain the first current information collected by the sampling module.

[0080] S301. The first temperature information of the relay within a first preset time period is compared with the first preset threshold to obtain the first comparison result.

[0081] Specifically, when the power battery is operating normally, the relay temperature is within a first preset threshold. When the first temperature exceeds the first preset threshold, the power battery may be in an overloaded state. By comparing the first temperature information of the relay within a first preset time with the first preset threshold, the operating status of the power battery can be determined based on the comparison result.

[0082] S302. The second temperature information of the fuse within a second preset time period is compared with the second preset threshold to obtain a second comparison result.

[0083] Specifically, when the power battery is operating normally, the temperature of the fuse is within a second preset threshold. When the second temperature exceeds the second preset threshold, the power battery may be in an overloaded state. By comparing the second temperature information of the relay within a second preset time with the second preset threshold, the operating status of the power battery can be determined based on the comparison result.

[0084] It should be noted that the first preset time can be the same as or different from the second preset time, and the first preset threshold can be the same as or different from the second preset threshold; no restrictions are imposed here.

[0085] S303. The first current information collected by the sampling module is compared with the third preset threshold to obtain the third comparison result.

[0086] Specifically, when the power battery is operating normally, the first current information collected by the sampling module is within a third preset threshold. When the first current information exceeds the third preset threshold, the power battery may be in an overload state. By comparing the first current information with the third preset threshold, the operating status of the power battery can be determined based on the comparison result.

[0087] S304. Determine the operating state of the power battery based on the first comparison result, the second comparison result, and the third comparison result.

[0088] Specifically, based on the first comparison result, it can be determined whether the relay temperature rapidly rises and exceeds a first preset threshold within a first preset time period. Based on the second comparison result, it can be determined whether the fuse temperature rapidly rises and exceeds a second preset threshold within a second preset time period. Based on the third comparison result, it can be determined whether the power battery current exceeds a third preset threshold. Based on the temperature changes of the relay, the fuse, and the power battery current, the operating status of the power battery can be determined.

[0089] S103. Adjust the operating parameters of the power battery according to the overload state of the power battery, so as to control the power battery to work in the normal operating state.

[0090] Optional, Figure 4 This is a flowchart of another battery control method provided in an embodiment of the present invention. Based on the above embodiments, see [link to other embodiments]. Figure 4 The battery control method provided in this embodiment of the invention includes:

[0091] S201, Obtain the first temperature information of the relay.

[0092] S202, Obtain the second temperature information of the fuse.

[0093] S203. Obtain the first current information collected by the sampling module.

[0094] S301. The first temperature information of the relay within a first preset time period is compared with the first preset threshold to obtain the first comparison result.

[0095] S302. The second temperature information of the fuse within a second preset time period is compared with the second preset threshold to obtain a second comparison result.

[0096] S303. The first current information of the sampling module is compared with the third preset threshold to obtain the third comparison result.

[0097] S401. If the first temperature information within the first preset time exceeds the first preset threshold and / or the second temperature information within the second preset time exceeds the second preset threshold, and the first current information exceeds the third preset threshold, then the power battery is determined to be in an overload state.

[0098] Specifically, when the first temperature information of the relay exceeds a first preset threshold within a first preset time and / or the second temperature information of the fuse exceeds a second preset threshold within a second preset time, and the first current information collected by the sampling module exceeds the second preset threshold, the power battery can be considered to be in an overload state, requiring adjustment of its operating parameters. This configuration allows for the judgment of the power battery's operating status through multiple criteria, enabling timely intervention and thus improving the safety of the power battery.

[0099] S103. Adjust the operating parameters of the power battery according to the overload state of the power battery, so as to control the power battery to work in the normal operating state.

[0100] Optional, Figure 5 This is a flowchart of another battery control method provided in an embodiment of the present invention. Based on the above embodiments, see [link to other embodiments]. Figure 5 The battery control method provided in this embodiment of the invention includes:

[0101] S101. Obtain the temperature information of the switching module and the first current information collected by the sampling module.

[0102] S102. Determine the operating state of the power battery based on the temperature information and the first current information; wherein the operating state includes normal operating state and overload state.

[0103] S501. When the power battery is in an overload state, control the power battery to reduce its output power.

[0104] Specifically, when a power battery is under overload, the internal components experience current exceeding their carrying capacity, causing the temperature to gradually rise. Prolonged overload can lead to a safety hazard. In this situation, it's necessary to reduce the battery's output power to decrease the internal current and protect the battery. This design extends the battery's lifespan and saves costs.

[0105] Optional, Figure 6 This is a flowchart of another battery control method provided in an embodiment of the present invention. Based on the above embodiments, see [link to other embodiments]. Figure 6 The battery control method provided in this embodiment of the invention includes:

[0106] S101. Obtain the temperature information of the switching module and the first current information collected by the sampling module.

[0107] S102. Determine the operating state of the power battery based on the temperature information and the first current information; wherein the operating state includes normal operating state and overload state.

[0108] S501. When the power battery is in an overload state, control the power battery to reduce its output power.

[0109] S601. Obtain the second current information collected by the sampling module.

[0110] Specifically, after reducing the output power of the power battery, the second current information of the power battery collected by the sampling module can be obtained again to confirm the current magnitude of the power battery.

[0111] S602. The second current information of the sampling module within a third preset time period is compared with the first current information to obtain a fourth comparison result.

[0112] Specifically, after the power battery reduces its output power and a third preset time has elapsed, the second current information collected by the sampling module is compared with the first current information. Based on the comparison result, it can be determined whether the current of the power battery has decreased, thereby determining whether the power battery has malfunctioned.

[0113] S603. Based on the fourth comparison result, determine the fault status of the power battery.

[0114] Specifically, when the second current information is less than the first current information, it can be confirmed that the output power of the power battery has decreased. When the second current information is greater than or equal to the first current information, the output power of the power battery has not decreased. In this case, it is necessary to confirm whether the power battery has malfunctioned, and then take appropriate action. This setting can further improve the safety of the power battery.

[0115] Optional, Figure 7 This is a flowchart of another battery control method provided in an embodiment of the present invention. Based on the above embodiments, see [link to other embodiments]. Figure 7 The battery control method provided in this embodiment of the invention includes:

[0116] S101. Obtain the temperature information of the switching module and the first current information collected by the sampling module.

[0117] S102. Determine the operating state of the power battery based on the temperature information and the first current information; wherein the operating state includes normal operating state and overload state.

[0118] S501. When the power battery is in an overload state, control the power battery to reduce its output power.

[0119] S601. Obtain the second current information collected by the sampling module.

[0120] S602. The second current information of the sampling module within a third preset time period is compared with the first current information to obtain a fourth comparison result.

[0121] S701. If the second current information is less than the first current information, then the power battery is determined to be fault-free.

[0122] Specifically, if the second current information is less than the first current information, it indicates that after the power battery reduces its output power, the current of the power battery decreases, and the power battery is operating normally. In this case, the power battery has not malfunctioned.

[0123] S702. If the second current information is greater than or equal to the first current information, then it is determined that the power battery has a short circuit fault.

[0124] Specifically, if the second current information is greater than or equal to the first current information, it means that although the power battery has reduced its output power, the actual current of the power battery has not decreased. In this case, it can be considered that the power battery has experienced an external short circuit fault.

[0125] Optional, Figure 8 This is a flowchart of another battery control method provided in an embodiment of the present invention. Based on the above embodiments, see [link to other embodiments]. Figure 8 The battery control method provided in this embodiment of the invention includes:

[0126] S101. Obtain the temperature information of the switching module and the first current information collected by the sampling module.

[0127] S102. Determine the operating state of the power battery based on the temperature information and the first current information; wherein the operating state includes normal operating state and overload state.

[0128] S501. When the power battery is in an overload state, control the power battery to reduce its output power.

[0129] S601. Obtain the second current information collected by the sampling module.

[0130] S602. The second current information of the sampling module within a third preset time period is compared with the first current information to obtain a fourth comparison result.

[0131] S603. Based on the fourth comparison result, determine the fault status of the power battery.

[0132] S801. If the power battery experiences a short circuit fault, the power battery circuit shall be disconnected.

[0133] Specifically, if a short circuit occurs in the power battery, the relay needs to be disconnected to break the battery circuit and protect the battery. This can be controlled by the battery management system or by the vehicle's relay system. This configuration further protects the power battery and improves safety.

[0134] Optional, Figure 9 This is a flowchart of another battery control method provided in an embodiment of the present invention. Based on the above embodiments, see [link to other embodiments]. Figure 9 The battery control method provided in this embodiment of the invention includes:

[0135] S201, Obtain the first temperature information of the relay.

[0136] S202, Obtain the second temperature information of the fuse.

[0137] S203. Obtain the first current information collected by the sampling module.

[0138] S901. Obtain the third temperature information of the sampling module.

[0139] Specifically, the third temperature information of the sampling module can be obtained to confirm the temperature information of the power battery. This third temperature information is the temperature generated by the current flowing through the conductor of the sampling module. The resistance of the conductor is affected by its temperature, which in turn affects the magnitude of the current flowing through it. By obtaining this third temperature information, the current information sampled by the sampling module can be corrected.

[0140] S902. Correct the first current information based on the third temperature information.

[0141] Specifically, based on the third temperature information generated when the current from the power battery passes through the conductor of the sampling module, the resistance value of the conductor can be corrected, thereby correcting the first current information acquired by the sampling module. This setting ensures the accuracy of the sampled current.

[0142] S102. Determine the operating state of the power battery based on the temperature information and the first current information; wherein the operating state includes normal operating state and overload state.

[0143] S103. Adjust the operating parameters of the power battery according to the overload state of the power battery, so as to control the power battery to work in the normal operating state.

[0144] For example, during operation, the power battery acquires first temperature information from a relay, second temperature information from a fuse, third temperature information from the power battery, and first current information from a sampling module. The sampling module corrects the first current information using the third temperature information. The first temperature information from the relay within a first preset time period is compared with a first preset threshold; the second temperature information from the fuse within a second preset time period is compared with a second preset threshold; and the first current information from the sampling module is compared with a third preset threshold.

[0145] When the first temperature information of the relay exceeds a first preset threshold within a first preset time and / or the second temperature information of the fuse exceeds a second preset threshold within a second preset time, and the first current information collected by the sampling module exceeds the second preset threshold, the power battery can be considered to be in an overload state. At this time, it is necessary to reduce the output power of the power battery to decrease the internal current of the power battery, thereby protecting the power battery.

[0146] After the power battery reduces its output power and a third preset time has elapsed, the second current information collected by the sampling module is compared with the first current information. If the second current information is greater than or equal to the first current information, it indicates that although the power battery has reduced its output power, the actual current of the power battery has not decreased, and a short circuit fault has occurred in the power battery. At this time, the battery management system or the vehicle relay control relay disconnects, further protecting the power battery. The battery control method provided in this embodiment maintains the normal operation of the power battery and improves the safety of the power battery.

[0147] Optional, Figure 10 This is a schematic diagram of a control device provided in an embodiment of the present invention. Based on the above embodiment, see... Figure 10 The control device 10 provided in this embodiment of the invention includes:

[0148] Acquisition module 11 is used to acquire temperature information from the switching module and first current information collected by the sampling module;

[0149] The judgment module 12 is used to determine the operating state of the power battery based on the temperature information and the first current information; wherein the operating state includes a normal state and an overload state;

[0150] The adjustment module 13 is used to adjust the operating parameters of the power battery according to the overload state of the power battery, so as to control the power battery to work in the normal operating state.

[0151] The charging control device for a battery module provided in this invention acquires temperature information from a switching module and first current information collected by a sampling module. Based on the temperature and first current information, the operating state of the power battery is determined; the operating state includes a normal state and an overload state. According to the operating state of the power battery, the operating parameters of the power battery are adjusted to control the power battery to operate in a normal operating state. By determining the operating state of the power battery and adjusting its operating parameters, the normal operation of the power battery is maintained, thus improving the safety of the power battery.

[0152] Optional, Figure 11 This is a schematic diagram of a battery control system provided in an embodiment of the present invention. Based on the above embodiment, see... Figure 11 The battery control system 100 provided in this embodiment of the invention includes a control device 10, a power battery 20, a switching module 30, and a sampling module 40. The control device 10 is connected to the switching module 30 and the sampling module 40, and the switching module 30 is connected between the power battery 20 and the sampling module 40. The battery control system provided in this embodiment of the invention has the beneficial effects of the battery control methods of any of the above embodiments, which will not be elaborated further here.

[0153] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0154] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A battery control method, characterized in that, The battery control method is applied to a battery control system, which includes a control device, a power battery, a switching module, and a sampling module. The control device is connected to the switching module and the sampling module, and the switching module is connected between the power battery and the sampling module. The battery control method includes: The temperature information of the switching module and the first current information of the power battery collected by the sampling module are obtained. The operating state of the power battery is determined based on the temperature information and the first current information; wherein the operating state includes normal operating state and overload state; Based on the overload state of the power battery, adjust the operating parameters of the power battery to control the power battery to work in the normal operating state. The step of adjusting the operating parameters of the power battery according to the overload state of the power battery to control the power battery to operate in a normal operating state includes: When the power battery is in an overload state, control the power battery to reduce its output power; After controlling the power battery to reduce its output power when the power battery is in an overload state, the method further includes: Obtain the second current information of the power battery collected by the sampling module; The second current information of the sampling module within a third preset time period is compared with the first current information to obtain a fourth comparison result; Based on the fourth comparison result, the fault condition of the power battery is determined.

2. The control method according to claim 1, characterized in that, The acquisition of temperature information from the switching module includes: Obtain the first temperature information of the relay; Obtain the second temperature information of the fuse; The switching module includes a relay and a fuse.

3. The control method according to claim 2, characterized in that, Determining the operating state of the power battery based on the temperature information and the first current information includes: The first temperature information of the relay within a first preset time period is compared with a first preset threshold to obtain a first comparison result; The second temperature information of the fuse within a second preset time is compared with a second preset threshold to obtain a second comparison result; The first current information collected by the sampling module is compared with a third preset threshold to obtain a third comparison result; The operating state of the power battery is determined based on the first comparison result, the second comparison result, and the third comparison result.

4. The control method according to claim 3, characterized in that, Determining the operating state of the power battery based on the first comparison result, the second comparison result, and the third comparison result includes: If the first temperature information within the first preset time exceeds the first preset threshold and / or the second temperature information within the second preset time exceeds the second preset threshold, and the first current information exceeds the third preset threshold, then the power battery is determined to be in an overload state.

5. The control method according to claim 1, characterized in that, Determining the fault status of the power battery based on the fourth comparison result includes: If the second current information is less than the first current information, then the power battery is determined to be fault-free. If the second current information is greater than or equal to the first current information, then the power battery is determined to have a short circuit fault.

6. The control method according to claim 1, characterized in that, After determining the fault condition of the power battery based on the fourth comparison result, the method further includes: If the power battery experiences a short circuit fault, the power battery circuit will be disconnected. Correspondingly, after acquiring the first current information collected by the sampling module, the method further includes: Obtain the third temperature information from the sampling module; The first current information is corrected based on the third temperature information.

7. A control device for executing the control method according to any one of claims 1-6, characterized in that, include: The acquisition module is used to acquire the temperature information of the switching module and the first current information collected by the sampling module; The judgment module is used to determine the operating state of the power battery based on the temperature information and the first current information; wherein the operating state includes a normal state and an overload state; The adjustment module is used to adjust the operating parameters of the power battery according to the overload state of the power battery, so as to control the power battery to work in the normal operating state.

8. A battery control system, characterized in that, The device includes the control device, power battery, switch module, and sampling module as described in claim 7, wherein the control device is connected to the switch module and the sampling module, and the switch module is connected between the power battery and the sampling module.

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