Electric equipment, battery module and control method thereof

Abstract

The invention relates to the technical field of batteries, and provides electric equipment, a battery module and a control method thereof, and the battery module comprises a first preset number of lithium ion cells, a second preset number of sodium ion cells, an electric quantity detection assembly and a control assembly. The second preset number of sodium ion battery cells and lithium ion battery cells are connected in series to form a hybrid battery module, a charging circuit is further arranged between the sodium ion battery cells and the lithium ion battery cells, and a circuit switch is arranged on the charging circuit. The electric quantity detection assembly is electrically connected with the hybrid battery module and is used for detecting electric quantity information of the hybrid battery module. The control assembly is electrically connected with the electric quantity detection assembly and the circuit switch, and the control assembly controls the circuit switch to be turned on based on electric quantity information detected by the electric quantity detection assembly so that the sodium ion battery cell can charge the lithium ion battery cell. According to the battery module provided by the invention, the health state of the lithium ion battery cell can be ensured in a long-term storage environment, and the health state of the hybrid battery module is further ensured.

Description

Technical Field

[0001] The present invention relates to the field of battery technology, and in particular to an electrical device, a battery module and a control method thereof. Background Art

[0002] When electric equipment, such as electric vehicles, are parked for a long time, that is, when they are parked for a long time without being driven, the battery module will self-discharge and gradually exhaust the power, affecting the driving range. For a hybrid battery module formed by connecting sodium ion cells and lithium ion cells in series, when the power of the hybrid battery module is zero, the sodium ion cells can continue to discharge, and the life of the cells is less affected; while the lithium ion cells are easily affected by continued discharge. In view of this, the present invention provides a power module. Summary of the invention

[0003] The first aspect of the present invention provides a battery module for alleviating or solving the above-mentioned technical defects in the prior art. When the hybrid battery module is in a long-term storage environment, when the power detection component detects that the power of the hybrid battery module is zero, the control component controls the sodium ion battery cell to supply power to the lithium ion battery cell so that the voltage of the lithium ion battery cell is not lower than the preset voltage, thereby ensuring the healthy state of the lithium ion battery cell and further ensuring the healthy state of the hybrid battery module.

[0004] A second aspect of the present invention provides a control method for a battery module.

[0005] A first aspect of the present invention provides an electrical device.

[0006] A first aspect of the present invention provides a battery module, comprising a first preset number of lithium-ion battery cells, a second preset number of sodium-ion battery cells, a power detection component and a control component.

[0007] A second preset number of sodium ion cells are connected in series with the lithium ion cells to form a hybrid battery module. A charging circuit is also provided between the sodium ion cells and the lithium ion cells, and a circuit switch is provided on the charging circuit.

[0008] The power detection component is electrically connected to the hybrid battery module and is used to detect power information of the hybrid battery module.

[0009] The control component is electrically connected to the power detection component and the circuit switch respectively. Based on the power information detected by the power detection component, the control component controls the circuit switch to open so that the sodium ion battery cell charges the lithium ion battery cell.

[0010] According to the battery module provided by the present invention, when the power information of the hybrid battery module detected by the power detection component does not meet the preset power information, the control component controls the circuit switch to open so that the sodium ion battery cell charges the lithium ion battery cell.

[0011] According to the battery module provided by the present invention, the preset power information includes that the power is zero.

[0012] The battery module provided by the present invention further includes a voltage detection component, wherein the voltage detection component is connected to both ends of the lithium-ion battery cell and is used to detect the voltage information of the corresponding lithium-ion battery cell; The voltage detection component is electrically connected to the control component, and is used to control the corresponding circuit switch to open according to the voltage information, so that the sodium ion battery cell charges the corresponding lithium ion battery cell.

[0013] According to the battery module provided by the present invention, when the voltage detection component detects that the voltage information of the corresponding lithium-ion battery cell does not meet the preset voltage information, the control component controls the circuit switch to open so that the sodium-ion battery cell charges the corresponding lithium-ion battery cell.

[0014] The battery module provided according to the present invention further includes a power prompt module, which is electrically connected to the control component and is used to issue a prompt message when the power information of the hybrid battery module does not meet the preset power information.

[0015] A second aspect of the present invention provides a control method for a battery module, comprising the following steps: Acquiring the power information of the hybrid battery module in real time; When it is determined that the power information of the hybrid battery module does not meet the preset power information, the circuit switch is controlled to be turned on so that the sodium ion battery cell charges the lithium ion battery cell.

[0016] According to the control method provided by the present invention, when it is determined that the power information of the hybrid battery module does not meet the preset power information, it also includes: Acquiring voltage information of the corresponding lithium-ion battery cell in real time; When it is determined that the voltage information of the lithium-ion battery cell does not meet the preset voltage information, the circuit switch is controlled to be turned on so that the sodium-ion battery cell charges the corresponding lithium-ion battery cell.

[0017] According to the control method provided by the present invention, the method further includes: When it is determined that the power information of the hybrid battery module does not meet the preset power information, a prompt message is issued at the same time.

[0018] The present invention provides a battery module, which is constructed by connecting a first preset number of lithium-ion cells and a second preset number of sodium-ion cells in series to form a hybrid battery module. When the hybrid battery module is in normal working state, the lithium-ion cells and the sodium-ion cells work together to supply power to the electrical equipment. A power detection component and a control component are provided on the hybrid battery module. When the hybrid battery module is in a long-term storage environment and the power detection component detects that the power of the hybrid battery module is zero, the control component controls the sodium-ion cells to transfer power to the lithium-ion cells, so that the voltage of the lithium-ion cells is not lower than the preset voltage, thereby ensuring the healthy state of the lithium-ion cells and further ensuring the healthy state of the hybrid battery module.

[0019] A control method for a battery module provided by the present invention can obtain the power information of a hybrid battery module in real time; when it is determined that the power information of the hybrid battery module does not meet the preset power information, the control circuit switch is turned on to allow the sodium ion battery cell to charge the lithium ion battery cell, thereby ensuring the health of the lithium ion battery cell and further ensuring the health of the hybrid battery module.

[0020] The electrical equipment provided by the present invention comprises the above-mentioned battery module and thus has all the above-mentioned advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a structural schematic diagram of an embodiment of a battery module provided by an embodiment of the present invention.

[0023] Figure 2 It is a control block diagram of a battery module provided by an embodiment of the present invention.

[0024] Figure 3 It is a structural schematic diagram of another embodiment of a battery module provided by an embodiment of the present invention.

[0025] Figure 4 4 is a discharge voltage curve diagram of a battery module provided by an embodiment of the present invention.

[0026] Figure 5 It is a flow chart of a control method of a battery module provided by an embodiment of the present invention.

[0027] Figure 6 It is a structural schematic diagram of the electronic device provided by the present invention. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0030] In the embodiments of the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0031] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0032] Since lithium-ion batteries will also consume electricity during long-term storage, if they are stored for too long, the power of the lithium-ion battery will drop to 0, which may easily cause damage to the lithium-ion battery, that is, the health of the lithium-ion battery will be affected.

[0033] In a lithium-sodium hybrid battery module, the lower voltage limit of a lithium-ion battery cell is 2V, and the lower voltage limit of a sodium-ion battery cell is 1.5V. During long-term storage, if the power of the hybrid battery module is 0, the voltage of the lithium-ion battery cell drops to 2V. When the battery is stored continuously, the voltage of the lithium-ion battery cell continues to drop, which will affect the health of the battery cell. At this time, the sodium-ion battery cell can still be discharged to 1.5V. Based on this, an embodiment of the present invention provides a battery module.

[0034] Figure 1 It is a structural schematic diagram of an embodiment of a battery module provided by an embodiment of the present invention. Figure 2 It is a control block diagram of a battery module provided by an embodiment of the present invention.

[0035] See also Figure 1 and Figure 2 An embodiment of the present invention provides a battery module, which includes a first preset number X of lithium-ion battery cells A, a second preset number Y of sodium-ion battery cells B, a power detection component and a control component.

[0036] Sodium ion cells and lithium ion cells are connected in series to form a hybrid battery module. A charging circuit is provided between the sodium ion cells and the lithium ion cells, and a circuit switch is provided on the charging circuit. The circuit switch is used to control the on and off of the charging circuit. When the hybrid battery module is in normal use, the sodium ion cells and lithium ion cells work together to power the electrical equipment. In extreme storage environments, for example, when the hybrid battery module is in storage for a long time, if the circuit switch is turned on, the charging circuit can be turned on, so that the sodium ion cells can be used as a power source to charge the lithium ion cells.

[0037] The power detection component is electrically connected to the hybrid battery module and is used to detect the power information of the hybrid battery module. The power detection component can use an open-loop voltage detection method, a battery modeling method, or a Coulomb technique to perform real-time detection of the power of the hybrid battery module.

[0038] For example, when the power detection component uses the Coulomb technique to detect power, a current detection resistor is connected in series between the positive and negative electrodes of the hybrid battery module. When current flows through the resistor, an induced voltage is generated. By detecting the induced voltage, the current flowing through the hybrid battery module can be calculated, and the consumed power can be calculated by integrating the time. Therefore, the power change of the hybrid battery module can be accurately tracked. In addition, by coordinating the voltage and temperature of the hybrid battery module, the influence of factors such as aging of the hybrid battery module on the measurement results can be reduced.

[0039] The control component is electrically connected to the power detection component and the circuit switch respectively. Based on the power information detected by the power detection component, the control component controls the circuit switch to open so that the sodium ion battery cell charges the lithium ion battery cell. The control component is a controller, such as a single chip microcomputer.

[0040] It can be understood that a battery module provided by an embodiment of the present invention is constructed into a hybrid battery module by connecting a first preset number of lithium-ion cells and a second preset number of sodium-ion cells in series. When the hybrid battery module is in normal working state, the lithium-ion cells and the sodium-ion cells work together to supply power to the electrical equipment. A power detection component and a control component are set on the hybrid battery module. When the hybrid battery module is in a long-term storage environment and the power detection component detects that the power of the hybrid battery module is zero, the control component controls the sodium-ion cells to transfer power to the lithium-ion cells, so that the voltage of the lithium-ion cells is not lower than the preset voltage, thereby ensuring the healthy state of the lithium-ion cells and further ensuring the healthy state of the hybrid battery module.

[0041] In some embodiments of the present invention, when the power information of the hybrid battery module detected by the power detection component does not meet the preset power information, the control component controls the circuit switch to turn on so that the sodium ion battery cell charges the lithium ion battery cell. The preset power information can be set manually according to the limit power usage of the battery cell, for example, the preset power information can be set to 0 or 1.

[0042] In addition, when the power information of the hybrid battery module detected by the power detection component meets the preset power information, the control component controls the circuit switch not to open.

[0043] Furthermore, it is preferred that the preset power information is a case where the power is zero, which is equivalent to that the hybrid battery module has no remaining power.

[0044] Figure 3 It is a structural schematic diagram of another embodiment of a battery module provided by an embodiment of the present invention.

[0045] See also Figure 3 The battery module provided in an embodiment of the present invention also includes a voltage detection component, which is connected to both ends of the lithium-ion battery cell and is used to detect the voltage information of the corresponding lithium-ion battery cell; and the voltage detection component is electrically connected to the control component, which is used to control the corresponding circuit switch to open according to the voltage information, so that the sodium-ion battery cell charges the corresponding lithium-ion battery cell.

[0046] The battery module provided by the embodiment of the present invention not only needs to detect the power information of the hybrid battery module through the power detection component, but also needs to further detect the voltage of each lithium-ion battery cell through the voltage detection component. When the power of the entire hybrid battery module is zero, the voltage of the lithium-ion battery cell is determined again. When the voltage detection component detects that the voltage information of the corresponding lithium-ion battery cell does not meet the preset voltage information, the control component controls the circuit switch to open so that the sodium-ion battery cell charges the corresponding lithium-ion battery cell.

[0047] This is equivalent to the battery module provided by the embodiment of the present invention, which performs dual detection through a power detection component and a voltage detection component to further determine the power of the lithium-ion battery cell. When the voltage information of the lithium-ion battery cell does not meet the preset voltage information, the control component controls the circuit switch to open so that the sodium-ion battery cell charges the corresponding lithium-ion battery cell, thereby improving the control progress of the battery module.

[0048] In addition, timing control can also be used. When each voltage detection component detects the power level of the corresponding lithium-ion battery cell, it first controls the low-voltage lithium-ion battery cell to be powered, and then controls the other lithium-ion battery cells to be powered.

[0049] It should be noted that the voltage detection component may be a voltage detection sensor.

[0050] Furthermore, the preset voltage information is preferably 2V. For example, when the power detection component detects that the power of the hybrid battery module is 0, the voltage of the lithium-ion battery A is at risk of falling below 2V due to the self-discharge effect of the battery cell during the storage process of the hybrid battery module, which will damage the health of the lithium-ion battery A. At this time, the sodium-ion battery B can still be discharged to 1.5V, and the sodium-ion battery B is controlled to transmit power to the lithium-ion battery A, ensuring that the voltage of the lithium-ion battery A is not lower than 2V, thereby ensuring the health of the lithium-ion battery A.

[0051] In some embodiments of the present invention, a power prompt module is further included. The power prompt module is electrically connected to the control component and is used to issue a prompt message when the power information of the hybrid battery module does not meet the preset power information.

[0052] For example, when the control component controls the sodium ion cell B to transfer power to the lithium ion cell A, the voltage of the lithium ion cell A is guaranteed to be no less than 2V, thereby ensuring the health of the lithium ion cell A. At the same time, the control component controls the power prompt module to send out power prompt information or warning signals.

[0053] Figure 4 4 is a discharge voltage curve diagram of a battery module provided by an embodiment of the present invention.

[0054] See also Figure 4 The battery module provided by the embodiment of the present invention connects a first preset number of lithium-ion cells and a second preset number of sodium-ion cells in series to form a hybrid battery module. In an extreme operating environment where a hybrid battery module needs to be stored for a long time, if the voltage of lithium-ion cell A is lower than 2V, it will affect the healthy life of lithium-ion cell A, while sodium-ion cell B can still be discharged at 2.5V and when the voltage drops to 1.5V, and after the voltage of sodium-ion cell B is lower than 1.5V, long-term storage will not affect the healthy life of sodium-ion cell B, because the current collectors of sodium-ion cell B are all aluminum, and there is no risk of copper precipitation.

[0055] When the hybrid battery module is in normal working condition, lithium-ion cell A and sodium-ion cell B work together. When the lower limit of the operating voltage of the hybrid battery module is 2.5V, under long-term storage condition, when the voltage detection component detects that the voltage of lithium-ion cell A is lower than 2V, the sodium-ion cell B is controlled to supply power to lithium-ion cell A.

[0056] That is, the installed quantity of lithium-ion battery A is X, and the installed quantity of sodium-ion battery B is Y; the lower limit of the working voltage of lithium-ion battery A is 2.5V; the lower limit of the working voltage of sodium-ion battery B is 2.5V. During long-term storage, both lithium-ion battery A and sodium-ion battery B are at risk of voltage reduction. When the voltage of lithium-ion battery A is ≤2V, sodium-ion battery B charges lithium-ion battery A with a charging current of 0.5CB-1CB), and sodium-ion battery B is discharged to 1.5V. CB is the current required for sodium-ion battery B to be charged to the upper limit of battery use at a voltage of 1.5V and fully charged at a constant current of 1h.

[0057] In the battery module of the present invention, on the one hand, the sodium ion battery cell B serves as a backup battery for the lithium ion battery cell A, and on the other hand, the sodium ion battery cell B, as a part of the power supply, participates in the working state of the battery module, realizes the conversion of the working battery into a backup battery, and improves the healthy life of the entire battery module under long-term storage conditions.

[0058] It should also be noted that the lithium-ion cells A and the sodium-ion cells B are arranged alternately to form a hybrid battery module. In this way, when the sodium-ion cells B are discharged in a low-temperature environment, the heat generated can evenly heat the lithium-ion cells A, so that each lithium-ion cell A can meet the discharge requirements and discharge synchronously with the sodium-ion cells B, further improving the discharge power of the battery module.

[0059] Of course, the lithium-ion cells A and sodium-ion cells B in the hybrid battery module can also be arranged differently in space according to different performance parameters, such as battery type, wiring size or space size constraints.

[0060] For example, the lithium-ion cells A and sodium-ion cells B in the hybrid battery module are arranged in space. The same type of cells can be arranged in the same row or column, and the lithium-ion cells A and sodium-ion cells B can be arranged alternately. Since the volume of the sodium-ion cell B is larger than that of the lithium-ion cell A, in order to improve the space utilization of the battery module, more rows of lithium-ion cells A and fewer rows of sodium-ion cells B can be arranged in the same battery module. For example, the battery module has a total of five rows, among which the first row, the third row and the fifth row can be arranged with lithium-ion cells A, and the second row and the fourth row can be arranged with sodium-ion cells B.

[0061] In addition, an AC excitation power supply can be connected to the positive and negative electrodes of the hybrid battery module to heat the hybrid battery module during discharge and charge, so that the temperature of the lithium-ion battery cell A rises to quickly generate heat and improve the discharge efficiency of the battery module.

[0062] The present invention also provides an electric device, comprising any one of the battery modules. The electric device may include an electric vehicle and an operating machine.

[0063] The electrical equipment provided by the present invention comprises the above-mentioned battery module and thus has all the above-mentioned advantages.

[0064] Figure 5 It is a flow chart of a control method of a battery module provided by an embodiment of the present invention.

[0065] See also Figure 5 , an embodiment of the present invention provides a control method based on a battery module, including the following steps S100 and S200.

[0066] Step S100: acquiring the power information of the hybrid battery module in real time, that is, detecting the power information of the hybrid battery module in real time according to the power detection component mentioned above.

[0067] Step S200: When it is determined that the power information of the hybrid battery module does not meet the preset power information, the control circuit switch is turned on to allow the sodium ion battery cell to charge the lithium ion battery cell.

[0068] It can be understood that the control method based on the battery module provided in the embodiment of the present invention can obtain the power information of the hybrid battery module in real time; when it is determined that the power information of the hybrid battery module does not meet the preset power information, the control circuit switch is turned on to allow the sodium ion battery cell to charge the lithium ion battery cell, thereby ensuring the health of the lithium ion battery cell and further ensuring the health of the hybrid battery module.

[0069] Furthermore, when it is determined that the power information of the hybrid battery module does not meet the preset power information, the method further includes: Obtain voltage information of corresponding lithium-ion battery cells in real time; When it is determined that the voltage information of the lithium-ion battery cell does not meet the preset voltage information, the control circuit switch is turned on to enable the sodium-ion battery cell to charge the corresponding lithium-ion battery cell.

[0070] In addition, the embodiment of the present invention provides a control method based on a battery module, further comprising: when it is determined that the power information of the hybrid battery module does not meet the preset power information, simultaneously issuing a prompt message.

[0071] Figure 6 An example physical structure diagram of an electronic device is provided.

[0072] like Figure 6 As shown, the electronic device may include: a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other via the communication bus. The processor may call the logic instructions in the memory to execute the control method of the battery module, and the method includes the above-mentioned steps S100 and S200.

[0073] In addition, the logic instructions in the above-mentioned memory can be implemented in the form of software functional units and can be stored in a computer-readable storage medium when sold or used as an independent product. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc., which can store program code.

[0074] On the other hand, the present invention also provides a computer program product, which includes a computer program. The computer program can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the control method provided by the above methods to execute the battery module, and the method includes the above steps S100 and S200.

[0075] On the other hand, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the control method for executing the battery module provided by the above-mentioned methods is implemented, and the method includes the above-mentioned step S100 and step S200.

[0076] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0077] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0078] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A battery module, characterized in that: include: a first predetermined number of lithium-ion cells; A second preset number of sodium ion cells are connected in series with the lithium ion cells to form a hybrid battery module, a charging circuit is further provided between the sodium ion cells and the lithium ion cells, and a circuit switch is provided on the charging circuit; A power detection component, electrically connected to the hybrid battery module, for detecting power information of the hybrid battery module; A control component is electrically connected to the power detection component and the circuit switch, respectively. The control component controls the circuit switch to open based on the power information detected by the power detection component, so that the sodium ion battery cell charges the lithium ion battery cell.

2. The battery module according to claim 1, characterized in that: When the power information of the hybrid battery module detected by the power detection component does not meet the preset power information, the control component controls the circuit switch to open so that the sodium ion battery cell charges the lithium ion battery cell.

3. The battery module according to claim 2, characterized in that: The preset power information includes that the power is zero.

4. The battery module according to claim 1, characterized in that: It also includes a voltage detection component, which is connected to both ends of the lithium-ion battery cell and is used to detect the voltage information of the corresponding lithium-ion battery cell; The voltage detection component is electrically connected to the control component, and is used to control the corresponding circuit switch to open according to the voltage information, so that the sodium ion battery cell charges the corresponding lithium ion battery cell.

5. The battery module according to claim 4, characterized in that: When the voltage detection component detects that the voltage information of the corresponding lithium-ion battery cell does not meet the preset voltage information, the control component controls the circuit switch to open so that the sodium-ion battery cell charges the corresponding lithium-ion battery cell.

6. The battery module according to any one of claims 1 to 5, characterized in that: It also includes a power prompt module, which is electrically connected to the control component and is used to issue a prompt message when the power information of the hybrid battery module does not meet the preset power information.

7. A control method for a battery module according to any one of claims 1 to 6, characterized in that: The steps include: Acquiring the power information of the hybrid battery module in real time; When it is determined that the power information of the hybrid battery module does not meet the preset power information, the circuit switch is controlled to be turned on so that the sodium ion battery cell charges the lithium ion battery cell.

8. The control method according to claim 7, characterized in that: When the determination that the power information of the hybrid battery module does not meet the preset power information further includes: Acquiring voltage information of the corresponding lithium-ion battery cell in real time; When it is determined that the voltage information of the lithium-ion battery cell does not meet the preset voltage information, the circuit switch is controlled to be turned on so that the sodium-ion battery cell charges the corresponding lithium-ion battery cell.

9. The control method according to claim 7, characterized in that: The method further comprises: When it is determined that the power information of the hybrid battery module does not meet the preset power information, a prompt message is issued at the same time.

10. An electrical device, characterized in that: A battery module comprising any one of claims 1 to 6.

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