CN221575623U - Heating control circuit and battery module - Google Patents

Abstract

The application provides a heating control circuit and a battery module, wherein the heating control circuit comprises a heating module, a switch module, a current detection module, a protection module and a control module connected with the switch module, the current detection module and the protection module in series; the heating module is used for heating the device to be heated in a working state; the switch module is used for controlling the on or off of a passage of the heating control circuit; the current detection module is used for detecting the current on the heating control circuit; the control module determines whether the switch module has a short circuit fault or not based on the detection current output by the current detection module, and controls the protection module to cut off when the switch module has the short circuit fault, so that the circuit loop is turned off. Specifically, when the heating control circuit provided by the application detects that the switch module has a short circuit fault, the protection module can be controlled to cut off, so that a dual control mechanism is realized, and safety accidents are avoided.

Description

Heating control circuit and battery module

Technical Field

The present application relates to the technical field of battery heating, and in particular to a heating control circuit and a battery module.

Background Art

In recent years, with the development and popularization of some portable digital devices, power tools, electric vehicles, mobile power supplies and distributed energy, battery modules including battery cells or single-module batteries have received more and more attention. Under the condition that the battery cells or single-module batteries have certain specifications, in order to meet different usage occasions and application requirements, it is often necessary to connect the single cells in series and parallel to form a battery module.

The heating methods of battery modules generally include air blast heating, liquid circulation heating, internal heating module heating, etc. Among them, internal heating module heating is to place the heating module inside the battery module, and the heat of the heating module is directly transferred to each battery cell to achieve battery heating. This method has high heating efficiency, high stability and low cost.

However, if a short circuit occurs in the heating control circuit using the internal heating module, it will cause excessive current, resulting in excessive local temperature, which in turn will cause the battery temperature to be too high, thus causing a safety accident.

Utility Model Content

The present application provides a heating control circuit and a battery module, which can solve the safety problem when a short circuit fault occurs in the heating control circuit.

To solve the above problems, a technical solution provided by the present application is: providing a heating control circuit, comprising a heating module, a switch module, a current detection module and a protection module connected in series, and a control module connected to the switch module, the current detection module and the protection module; the heating module is used to heat the device to be heated in a working state; the switch module is used to control the conduction or cutoff of the path of the heating control circuit; the current detection module is used to detect the current on the heating control circuit; the control module determines whether a short-circuit fault occurs in the switch module based on the detection current output by the current detection module, and controls the protection module to be cut off when a short-circuit fault occurs in the switch module.

In one embodiment, the control module also determines whether a circuit break fault or an overcurrent fault occurs in the heating control circuit based on the detection current output by the current detection module, and controls the protection module and/or the switch module to be cut off when a circuit break fault or an overcurrent fault occurs in the heating control circuit.

In one embodiment, the heating control circuit includes the protection module, the heating module, the switch module and the current detection module which are connected in series in sequence.

In one embodiment, the protection module includes a three-terminal fuse element and a first control switch; the first end of the three-terminal fuse element is connected to the positive electrode of the power supply, the second end of the three-terminal fuse element is connected to the input end of the heating module, and the third end of the three-terminal fuse element is connected to the first path end of the first control switch; the second path end of the first control switch is grounded, and the control end of the first control switch is connected to the control module; wherein, when the control module determines that a short circuit fault occurs in the switch module, the first control switch is controlled to be turned on so that the three-terminal fuse element is blown, thereby controlling the path of the heating control circuit to be cut off.

In one embodiment, the switch module includes a second control switch; the first path end of the second control switch is connected to the output end of the heating module, the second path end of the second control switch is connected to the current detection module, and the control end of the second control switch is connected to the control module.

In one embodiment, the current detection module includes a first resistor, a second resistor, a third resistor, a fourth resistor and an operational amplifier; the first resistor is connected in series between the switch module and the negative pole of the power supply, the first end of the second resistor is connected to the first end of the first resistor, the second end of the second resistor is connected to the first input end of the operational amplifier, the first end of the third resistor is connected to the second end of the first resistor, the second end of the third resistor is connected to the second input end of the operational amplifier, the first end of the fourth resistor is connected to the second end of the third resistor, the second end of the fourth resistor is connected to the output end of the operational amplifier, and the output end of the operational amplifier is also connected to the control module.

In one embodiment, a sixth resistor is further connected between the control end of the first control switch in the protection module and the control module; a seventh resistor is further connected between the control end of the second control switch in the switch module and the control module.

In one embodiment, the heating control circuit further includes a temperature detection module, wherein the temperature detection module is used to detect the temperature of the heating module, and the temperature detection module is connected to the control module.

In one embodiment, the temperature detection module includes a thermistor, a connector and an eighth resistor; the first end of the thermistor is connected to the first connection end of the connector, the second end of the thermistor is connected to the second connection end of the connector and is grounded, the first end of the eighth resistor is connected to the first power supply, and the second end of the eighth resistor is connected to the control module.

To solve the above problems, another technical solution provided by the present application is: to provide a battery module, comprising a plurality of battery cells arranged in series and/or in parallel, and a heating control circuit as described in any of the above items; wherein the heating control circuit is used to heat the plurality of battery cells through the heating module in a conductive state.

Different from the prior art, the beneficial effect of the present application is that in the heating control circuit and battery module provided by the present application, the heating control circuit includes a heating module, a switch module, a current detection module and a protection module connected in series, and a control module connected to the switch module, the current detection module and the protection module; wherein the heating module is used to heat the device to be heated in the working state; the switch module is used to control the conduction or cutoff of the path of the heating control circuit; the current detection module is used to detect the current on the heating control circuit; the control module determines whether a short circuit fault occurs in the switch module based on the detection current output by the current detection module, and when a short circuit fault occurs in the switch module, the protection module is controlled to be cut off, thereby shutting down the circuit loop. Specifically, the heating control circuit provided by the present application can control the protection module to be cut off when a short circuit fault is detected in the switch module, thereby realizing a dual control mechanism to avoid safety accidents.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:

FIG1 is a structural block diagram of an embodiment of a heating control circuit provided by the present application;

FIG2 is a structural block diagram of another embodiment of a heating control circuit provided by the present application;

FIG3 is a circuit structure diagram of an embodiment of a heating control circuit provided by the present application;

FIG4 is a circuit structure diagram of an embodiment of a protection module provided by the present application;

FIG5 is a circuit structure diagram of an embodiment of a switch module and a current detection module provided by the present application;

FIG6 is a circuit structure diagram of an embodiment of a temperature detection module provided by the present application;

FIG. 7 is a schematic structural diagram of an embodiment of a battery module provided in the present application.

DETAILED DESCRIPTION

The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

The terms "first", "second", "third" and "fourth" in this application are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. All directional indications (such as up, down, first direction, second direction, etc.) in the embodiments of this application are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions.

Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

The present application is described in detail below with reference to the accompanying drawings and embodiments.

Refer to Figure 1, which is a structural block diagram of an embodiment of a heating control circuit provided by the present application. Specifically, the present application provides a heating control circuit 100, which includes a heating module 10, a switch module 20, a current detection module 30 and a protection module 40 connected in series, and a control module 50 connected to the switch module 20, the current detection module 30 and the protection module 40.

The heating module 10 is used to heat the device to be heated in the working state. The heating module 10 includes but is not limited to heating film, heating sheet, heating wire and other components with heating function. The device to be heated includes but is not limited to each battery cell in the battery module, semiconductor devices, precision instruments and other devices that need to be heated.

The switch module 20 is used to control the on or off state of the heating control circuit 100 .

The current detection module 30 is used to detect the current on the heating control circuit 100 .

The control module 50 determines whether a short circuit fault occurs in the switch module 20 based on the detection current output by the current detection module 30 , and when a short circuit fault occurs in the switch module 20 , the control module 50 is turned off to cut off the circuit loop.

For example, when the switch module 20 is set to the cut-off state, if the current detection module 30 detects that there is an output current on the heating control circuit 100, the control module 50 determines that a short circuit fault has occurred in the switch module 20 based on the detection current output by the current detection module 30, and the function of controlling the heating control circuit 100 to be cut off cannot be realized. Then, the control module 50 controls the protection module 40 to be cut off, thereby shutting off the heating control circuit 100 loop, causing the heating module 10 to stop heating, thereby ensuring that the device to be heated will not overheat and cause other safety problems.

Of course, in some embodiments, the control module 50 also determines whether a circuit break fault or an overcurrent fault occurs in the heating control circuit 100 based on the detection current output by the current detection module 30, and when a circuit break fault or an overcurrent fault occurs in the heating control circuit 100, the control protection module 40 and/or the switch module 20 are cut off.

For example, when the switch module 20 is set to the on state, if the current detection module 30 detects that the detection current on the heating control circuit 100 is greater than the preset current, the control module 50 determines that an overcurrent fault has occurred in the heating control circuit 100 based on the detection current output by the current detection module 30, and there is a safety hazard. The control module 50 then controls the protection module 40 and/or the switch module 20 to be cut off, thereby shutting down the circuit loop.

For another example, when the switch module 20 is set to the on state, if the current detection module 30 does not detect that there is current in the heating control circuit 100, the control module 50 determines that a circuit breaker fault occurs in the heating control circuit 100 based on the fact that the current detection module 30 does not detect the current in the loop, and the heating function cannot be achieved or the heating power cannot meet the requirements. The control module 50 then controls the protection module 40 and/or the switch module 20 to be cut off to facilitate maintenance of the circuit.

In addition, when the control module 50 determines that the heating control circuit 100 has a circuit breaker fault, other corresponding operations may be performed, such as issuing an alarm, performing circuit pressure relief through other modules, etc., which are not limited here.

Specifically, the heating control circuit 100 provided in the present application has the following functions: 1. When a short circuit fault is detected in the switch module 20, the protection module 40 can be controlled to be cut off, thereby shutting down the circuit loop, thereby realizing a dual control mechanism to avoid safety accidents; 2. When it is determined that an overcurrent fault occurs in the heating control circuit 100, the protection module 40 and/or the switch module 20 are controlled to be cut off, thereby shutting down the circuit loop, thereby realizing a dual control mechanism to avoid safety accidents; 3. When it is determined that a short circuit fault occurs in the heating control circuit 100, the protection module 40 and/or the switch module 20 are controlled to be cut off, thereby realizing a dual control mechanism to avoid safety accidents.

Refer to Figure 2, which is a structural block diagram of another embodiment of the heating control circuit provided in the present application. In one embodiment, the heating control circuit 100 also includes a temperature detection module 60, which is used to detect the temperature on the heating module 10, and the temperature detection module 60 is connected to the control module 50.

Specifically, the control module 50 adjusts the output power to the heating module 10 based on the temperature on the heating module 10 detected by the temperature detection module 60 and the current detected by the current detection module 30 to ensure that the heating module 10 makes the device to be heated operate in an optimal temperature range according to the expected heating strategy.

The temperature detection module 60 includes but is not limited to a temperature sensor, a circuit with a temperature measurement function, and the like.

It can be understood that the heating control circuit 100 provided in the present application, the temperature detection module 60 and the current detection module 30 form a double-layer feedback mechanism, the protection module 40 forms a secondary protection function for the circuit, and the switch module 20 and the protection module 40 form a double-layer control mechanism, which effectively improves the safety and reliability of the heating control circuit 100.

In some embodiments, the serial connection sequence of the protection module 40 , the heating module 10 , the switch module 20 , and the current detection module 30 can be designed according to actual needs and is not limited here.

For example, the heating control circuit 100 includes a protection module 40 , a heating module 10 , a switch module 20 and a current detection module 30 which are connected in series in sequence.

For another example, the heating control circuit 100 includes a heating module 10 , a protection module 40 , a switch module 20 and a current detection module 30 which are connected in series in sequence.

For another example, the heating control circuit 100 includes a protection module 40 , a switch module 20 , a current detection module 30 and a heating module 10 which are connected in series in sequence.

For another example, the heating control circuit 100 includes a protection module 40 , a current detection module 30 , a switch module 20 and a heating module 10 which are connected in series in sequence.

As shown in FIG. 1 , in a specific embodiment of the present application, a heating control circuit 100 includes a protection module 40 , a heating module 10 , a switch module 20 and a current detection module 30 which are sequentially connected in series.

Specifically, the protection module 40 is arranged at the front end of the heating module 10, the switch module 20 and the current detection module 30. When there is an overcurrent at the power supply end, the protection module 40 is cut off, thereby effectively protecting the rear end heating module 10, the switch module 20 and the current detection module 30 from being damaged by the large current.

The heating module 10 is disposed between the protection module 40 and the switch module 20 , and the protection module 40 and the switch module 20 can isolate the two ends of the heating module 10 from the power supply.

The current detection module 30 is arranged at the rear end of the switch module 20, so that the current detection module 30 can detect the output current of the switch module 20, so that the control module 50 can accurately judge whether the switch module 20 has a short circuit fault, whether the heating control circuit 100 has an overcurrent fault and a short circuit fault, etc. based on the detection current output by the current detection module 30.

Refer to Figure 3, which is a circuit structure diagram of an embodiment of the heating control circuit provided by the present application. In one embodiment, the protection module 40 at least includes a three-terminal fuse element F and a first control switch Q1; wherein the first end of the three-terminal fuse element F is connected to the positive electrode of the power supply B+, the second end of the three-terminal fuse element F is connected to the input end HT POS of the heating module 10, and the third end of the three-terminal fuse element F is connected to the first path end of the first control switch Q1; the second path end of the first control switch Q1 is grounded, and the control end of the first control switch Q1 is connected to the first port HT FUSE of the control module 50.

The first control switch Q1 and the second control switch Q2 may be NMOS or PMOS. The present application takes the first control switch Q1 and the second control switch Q2 as NMOS as an example.

When the control module 50 determines that a short circuit fault occurs in the switch module 20 , the control module 50 controls the first control switch Q1 to be turned on, so that the three-terminal fuse element F is blown, thereby controlling the path of the heating control circuit 100 to be cut off.

Please continue to refer to Figure 3. In one embodiment, the switch module 20 at least includes a second control switch Q2; wherein the first path end of the second control switch Q2 is connected to the output end HT NEG of the heating module 10, the second path end of the second control switch Q2 is connected to the current detection module 30, and the control end of the second control switch Q2 is connected to the control module 50.

Please continue to refer to Figure 3. In one embodiment, the current detection module 30 at least includes a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4 and an operational amplifier A; wherein the first resistor R1 is connected in series between the switch module 20 and the negative electrode of the power supply B-, the first end of the second resistor R2 is connected to the first end of the first resistor R1, the second end of the second resistor R2 is connected to the first input end of the operational amplifier A, the first end of the third resistor R3 is connected to the second end of the first resistor R1, the second end of the third resistor R3 is connected to the second input end of the operational amplifier A, the first end of the fourth resistor R4 is connected to the second end of the third resistor R3, the second end of the fourth resistor R4 is connected to the output end of the operational amplifier A, and the output end of the operational amplifier A is also connected to the control module 50.

The fourth resistor R4 is used as a negative feedback resistor of the operational amplifier A to limit the gain of the operational amplifier A, thereby preventing the effective gain of the operational amplifier A from being too large and entering a locked state.

Referring to FIG. 6 , FIG. 6 is a circuit structure diagram of an embodiment of the temperature detection module provided by the present application. In one embodiment, the temperature detection module 60 at least includes a thermistor Rx, a connector B, and an eighth resistor R8. The thermistor Rx is designed to fit the heating module 10, and the first end of the thermistor Rx is connected to the first connection end of the connector B, the second end of the thermistor Rx is connected to the second connection end of the connector B and is grounded, the first end of the eighth resistor R8 is connected to the first power supply VREF, and the second end of the eighth resistor R8 is connected to the control module 50.

Referring to FIG. 4 and FIG. 5 , FIG. 4 is a circuit structure diagram of an embodiment of a protection module provided in the present application; FIG. 5 is a circuit structure diagram of an embodiment of a switch module and a current detection module provided in the present application.

In one embodiment, a sixth resistor R6 is further connected between the control end of the first control switch Q1 and the control module 50 ; a seventh resistor R7 is further connected between the control end of the second control switch Q2 and the control module 50 .

Specifically, the sixth resistor R5 and the seventh resistor R6 are used to discharge current when the control module 50 outputs a high level.

Please refer to FIG. 4 . In one embodiment, the protection module 40 further includes a first diode D1, a second diode D2, a third diode D3, a first capacitor C1, and a ninth resistor R9. The first end of the first diode D1 and the first end of the first capacitor C1 are connected to the first path end of the first control switch Q1, and the second end of the first diode D1 and the second end of the first capacitor C1 are connected to the second path end of the first control switch Q1; the first end of the second diode D2 and the first end of the ninth resistor R9 are connected to the control end of the first control switch Q1, and the second end of the second diode D2 and the second end of the ninth resistor R9 are connected to the second path end of the first control switch Q1; the first end of the sixth resistor R6 is connected to the first port HT FUSE of the control module 50, the second end of the sixth resistor R6 is connected to the first end of the third diode D3, and the second end of the third diode D3 is connected to the control end of the first control switch Q1.

Among them, the first diode D1 can be a TVS tube, the second diode D2 can be a Zener diode, and the third diode D3 can be an ordinary diode. Specifically, the branch formed by the first diode D1 and the first capacitor C1 can absorb the high energy output by the positive electrode B+ of the power supply to avoid damage to the first control switch Q1. The second diode D2 is used to prevent the control end of the first control switch Q1 from overvoltage; the ninth resistor R9 is used to pull down and stabilize the control end of the first control switch Q1 and the second path end when the control module 50 outputs a low level; the third diode D3 is used to prevent current from flowing from the first control switch Q1 to the control module 50, thereby avoiding damage to the control module 50.

Please refer to Figure 5. In one embodiment, the switch module 20 also includes a tenth resistor R10 and a fourth diode D4, wherein the first end of the tenth resistor R10 and the first end of the fourth diode D4 are connected to the control end of the second control switch Q2, the second end of the tenth resistor R10 and the second end of the fourth diode D4 are connected to the second path end of the second control switch Q2; the control end of the second control switch Q2 is connected to the second port HT CTRL of the control module 50 through the seventh resistor R7.

The fourth diode D4 can be a Zener diode. The fourth diode D4 is used to prevent the control end of the second control switch Q2 from overvoltage. The tenth resistor R10 is used to pull down and stabilize the control end of the first control switch Q1 and the second path end when the control module 50 outputs a low level.

Please continue to refer to FIG. 5. In one embodiment, the current detection module 30 further includes a second capacitor C2, a third capacitor C3, a fourth capacitor C4 and an eleventh resistor R11. The first end of the second capacitor C2 is connected to the output end of the operational amplifier A, the second end of the second capacitor C2 is connected to the second input end of the operational amplifier A, the first end of the eleventh resistor R11 and the first end of the third capacitor C3 are connected to the third port HT ISEN of the control module 50, the second end of the eleventh resistor R11 is connected to the output end of the operational amplifier A, and the second end of the third capacitor C3 is grounded; the first end of the fourth capacitor C4 is connected to the second end of the second resistor R2, and the second end of the fourth capacitor C4 and the ground end of the operational amplifier A are grounded.

The second capacitor C2 and the fourth capacitor C4 are filter capacitors, and the first end of the eleventh resistor R11 and the third capacitor C3 form a filter branch for preventing the control module 50 from fluctuating when collecting the electrical signal output by the current detection module 30 .

In one embodiment, the switch module 20 and the current detection module 30 also share a fifth diode D5 and a fifth capacitor C5. The first end of the fifth diode D5 and the first end of the fifth capacitor C5 are connected to the first path end of the second control switch Q2, and the second end of the fifth diode D5 and the second end of the fifth capacitor C5 are connected to the second end of the first resistor R1. The fifth diode D5 can be a TVS tube. Specifically, the branch formed by the fifth diode D5 and the fifth capacitor C5 can absorb the high energy output by the output terminal HT NEG of the heating module 10 to avoid damage to the second control switch Q2.

Please refer to Figure 6. In one embodiment, the temperature detection module 60 also includes a twelfth resistor R12, a sixth capacitor C6 and a seventh capacitor C7, wherein the first end of the twelfth resistor R12 and the first end of the sixth capacitor C6 are connected to the fourth port RT ADC of the control module 50, the second end of the twelfth resistor R12 and the first end of the seventh capacitor C7 are connected to the second end of the eighth resistor R8, and the second end of the sixth capacitor C6 and the second end of the seventh capacitor C7 are grounded.

The seventh capacitor C7 is a filter capacitor, and the twelfth resistor R12 and the sixth capacitor C6 form a filter branch for preventing the control module 50 from fluctuating when collecting the electrical signal output by the temperature detection module 60 .

Specifically, the heating control circuit 100 provided in the present application has the following functions: 1. When a short circuit fault is detected in the switch module 20, the protection module 40 can be controlled to be turned off, thereby shutting down the circuit loop, thereby realizing a dual control mechanism to avoid safety accidents; 2. When it is determined that an overcurrent fault occurs in the heating control circuit 100, the protection module 40 and/or the switch module 20 are controlled to be turned off, thereby shutting down the circuit loop, realizing a dual control mechanism to avoid safety accidents; 3. When it is determined that an open circuit fault occurs in the heating control circuit 100, the protection module 40 and/or the switch module 20 are controlled to be turned off, thereby realizing a dual control mechanism to avoid safety accidents. In addition, the double-layer feedback mechanism composed of the temperature detection module 60 and the current detection module 30, and the double-layer control mechanism formed by the switch module 20 and the protection module 40 effectively improve the safety and reliability of the heating control circuit 100.

Refer to Figure 7, which is a structural schematic diagram of an embodiment of a battery module provided by the present application. The present application also provides a battery module 200, including a plurality of battery cells (not shown) arranged in series and/or parallel, and the heating control circuit 100 described in any of the above embodiments.

The heating control circuit 100 is used to heat a plurality of battery cells through the heating module 10 in the on state, thereby ensuring that the battery cells operate in an optimal temperature range and improving the safety and reliability of the battery module 200 .

The above description is only an implementation method of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims (10)

1. A heating control circuit, characterized in that it comprises a heating module, a switch module, a current detection module and a protection module connected in series, and a control module connected to the switch module, the current detection module and the protection module; The heating module is used to heat the device to be heated in a working state; The switch module is used to control the on or off of the path of the heating control circuit; The current detection module is used to detect the current on the heating control circuit; The control module determines whether a short circuit fault occurs in the switch module based on the detection current output by the current detection module, and controls the protection module to be turned off when a short circuit fault occurs in the switch module. 2. The heating control circuit according to claim 1 is characterized in that the control module also determines whether a circuit break fault or an overcurrent fault occurs in the heating control circuit based on the detection current output by the current detection module, and when a circuit break fault or an overcurrent fault occurs in the heating control circuit, the protection module and/or the switch module is controlled to be cut off. 3 . The heating control circuit according to claim 1 , characterized in that the heating control circuit comprises the protection module, the heating module, the switch module and the current detection module which are connected in series in sequence. 4. The heating control circuit according to claim 3, characterized in that the protection module comprises a three-terminal fuse element and a first control switch; The first end of the three-terminal fuse element is connected to the positive electrode of the power supply, the second end of the three-terminal fuse element is connected to the input end of the heating module, and the third end of the three-terminal fuse element is connected to the first path end of the first control switch; the second path end of the first control switch is grounded, and the control end of the first control switch is connected to the control module; When the control module determines that a short circuit fault occurs in the switch module, the control module controls the first control switch to be turned on so as to fuse the three-terminal fuse element, thereby controlling the path of the heating control circuit to be cut off. 5. The heating control circuit according to claim 3, characterized in that the switch module comprises a second control switch; The first passage end of the second control switch is connected to the output end of the heating module, the second passage end of the second control switch is connected to the current detection module, and the control end of the second control switch is connected to the control module. 6. The heating control circuit according to claim 3, characterized in that the current detection module comprises a first resistor, a second resistor, a third resistor, a fourth resistor and an operational amplifier; The first resistor is connected in series between the switch module and the negative pole of the power supply, the first end of the second resistor is connected to the first end of the first resistor, the second end of the second resistor is connected to the first input end of the operational amplifier, the first end of the third resistor is connected to the second end of the first resistor, the second end of the third resistor is connected to the second input end of the operational amplifier, the first end of the fourth resistor is connected to the second end of the third resistor, the second end of the fourth resistor is connected to the output end of the operational amplifier, and the output end of the operational amplifier is also connected to the control module. 7. The heating control circuit according to claim 3, characterized in that a sixth resistor is further connected between the control end of the first control switch in the protection module and the control module; A seventh resistor is further connected between the control end of the second control switch in the switch module and the control module. 8. The heating control circuit according to any one of claims 1 to 7, characterized in that the heating control circuit further comprises a temperature detection module, the temperature detection module is used to detect the temperature on the heating module, and the temperature detection module is connected to the control module. 9. The heating control circuit according to claim 8, characterized in that the temperature detection module comprises a thermistor, a connector and an eighth resistor; The first end of the thermistor is connected to the first connection end of the connector, the second end of the thermistor is connected to the second connection end of the connector and is grounded, the first end of the eighth resistor is connected to the first power supply, and the second end of the eighth resistor is connected to the control module. 10. A battery module, characterized in that it comprises a plurality of battery cells connected in series and/or in parallel, and a heating control circuit according to any one of claims 1 to 9; wherein the heating control circuit is used to heat the plurality of battery cells through the heating module in a conducting state.