CN221575623U - Heating control circuit and battery module - Google Patents
Heating control circuit and battery module Download PDFInfo
- Publication number
- CN221575623U CN221575623U CN202323223103.8U CN202323223103U CN221575623U CN 221575623 U CN221575623 U CN 221575623U CN 202323223103 U CN202323223103 U CN 202323223103U CN 221575623 U CN221575623 U CN 221575623U
- Authority
- CN
- China
- Prior art keywords
- module
- heating
- control
- resistor
- switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 150
- 238000001514 detection method Methods 0.000 claims abstract description 79
- 239000000178 monomer Substances 0.000 claims description 2
- 230000007246 mechanism Effects 0.000 abstract description 10
- 230000009977 dual effect Effects 0.000 abstract description 8
- 239000003990 capacitor Substances 0.000 description 30
- 238000010586 diagram Methods 0.000 description 14
- 230000008713 feedback mechanism Effects 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Protection Of Static Devices (AREA)
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
Technical Field
The application relates to the technical field of battery heating, in particular to a heating control circuit and a battery module.
Background
In recent years, with the development and popularization of portable digital devices, electric tools, electric vehicles, mobile power sources, distributed energy sources and the like, a battery module including a battery cell, a single-module battery and the like has been receiving more and more attention. Under the condition that the single battery or the single-module battery has certain specification, the single battery is often required to be connected in series and parallel to form a battery module for use in order to meet different use occasions and application requirements.
The heating mode of the battery module generally includes blast heating, liquid circulation heating, internal heating module heating, and the like. The internal heating module is used for heating the battery, the heating module is arranged in the battery module, heat of the heating module is directly transferred to each battery cell, and battery heating is achieved.
However, if a short circuit fault occurs in the heating control circuit heated by the internal heating module, the current is too high, so that the local temperature is too high, and the battery temperature is too high, thereby causing a safety accident.
Disclosure of utility model
The application provides a heating control circuit and a battery module, which can solve the safety problem when the heating control circuit has a short circuit fault.
In order to solve the problems, the application provides a technical scheme that: 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 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.
In an embodiment, the control module further determines whether the heating control circuit has an open-circuit fault or an overcurrent fault based on the detected current output by the current detection module, and controls the protection module and/or the switch module to be turned off when the heating control circuit has the open-circuit fault or the overcurrent fault.
In an embodiment, the heating control circuit includes the protection module, the heating module, the switch module, and the current detection module 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 safety element is connected with the positive electrode of the power supply, the second end of the three-terminal safety element is connected with the input end of the heating module, and the third end of the three-terminal safety element is connected with the first channel 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 with the control module; when the control module determines that the switch module has a short-circuit fault, the first control switch is controlled to be turned on so as to fuse the three-terminal safety element, and then the passage of the heating control circuit is controlled to be turned off.
In an embodiment, the switch module includes a second control switch; the first passage end of the second control switch is connected with the output end of the heating module, the second passage end of the second control switch is connected with the current detection module, and the control end of the second control switch is connected with 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 electrode of the power supply, the first end of the second resistor is connected with the first end of the first resistor, the second end of the second resistor is connected with the first input end of the operational amplifier, the first end of the third resistor is connected with the second end of the first resistor, the second end of the third resistor is connected with the second input end of the operational amplifier, the first end of the fourth resistor is connected with the second end of the third resistor, the second end of the fourth resistor is connected with the output end of the operational amplifier, and the output end of the operational amplifier is also connected with the control module.
In an 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 an embodiment, the heating control circuit further includes a temperature detection module, the temperature detection module is configured to detect a temperature on 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 with the first connecting end of the connector, the second end of the thermistor is connected with the second connecting end of the connector and grounded, the first end of the eighth resistor is connected with a first power supply, and the second end of the eighth resistor is connected with the control module.
In order to solve the above problems, another technical solution provided by the present application is: providing a battery module, comprising a plurality of battery cells which are arranged in series and/or in parallel, and a heating control circuit of any one of the above; the heating control circuit is used for heating the plurality of battery monomers through the heating module in a conducting state.
Compared with the prior art, the heating control circuit and the battery module have the beneficial effects that the heating control circuit comprises the heating module, the switch module, the current detection module and the protection module which are connected in series, and the control module is connected with the switch module, the current detection module and the protection module; 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.
Drawings
For a clearer description of the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the description below are only some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art, wherein:
FIG. 1 is a block diagram illustrating a heating control circuit according to an embodiment of the present application;
FIG. 2 is a block diagram of another embodiment of a heating control circuit according to the present application;
FIG. 3 is a circuit diagram of an embodiment of a heating control circuit according to the present application;
FIG. 4 is a circuit diagram of an embodiment of a protection module according to the present application;
FIG. 5 is a circuit diagram of an embodiment of a switch module and a current detection module according to the present application;
FIG. 6 is a circuit diagram of an embodiment of a temperature detection module according to the present application;
Fig. 7 is a schematic structural diagram of a battery module according to an embodiment of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The terms "first," "second," "third," "fourth" and the like in this disclosure are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "first", "second", "third", and "fourth" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise. All directional indicators (such as up, down, first direction, second direction, etc.) in the embodiments of the present application are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
The present application will be described in detail with reference to the accompanying drawings and examples.
Referring to fig. 1, fig. 1 is a block diagram of an embodiment of a heating control circuit provided by the present application, and specifically, the present application provides a heating control circuit 100, where the heating control circuit 100 includes a heating module 10, a switching module 20, a current detection module 30, and a protection module 40 connected in series, and a control module 50 connected to the switching module 20, the current detection module 30, and the protection module 40.
Wherein the heating module 10 is used for heating the device to be heated in an operating state. The heating module 10 includes, but is not limited to, a heating film, a heating sheet, a heating wire, and the like having a heating function. The device to be heated includes, but is not limited to, each battery cell, semiconductor device, precision instrument and other devices in the battery module, which need to be heated.
The switch module 20 is used for controlling the on or off of the path of the heating control circuit 100.
The current detection module 30 is used for detecting the current on the heating control circuit 100.
The control module 50 determines whether the switch module 20 has a short-circuit fault based on the detected current output by the current detection module 30, and controls the protection module 40 to be turned off when the switch module 20 has the short-circuit fault, thereby turning off the circuit loop.
For example, when the switch module 20 is set to the off state, if the current detection module 30 detects that the heating control circuit 100 has an output current, the control module 50 determines that the switch module 20 has a short-circuit fault based on the detected current output by the current detection module 30, and cannot realize the function of controlling the off of the heating control circuit 100, and the control module 50 controls the protection module 40 to be turned off, so that the heating control circuit 100 is turned off, so that the heating module 10 stops heating, and it is ensured that the device to be heated cannot be over-heated and other safety problems are generated.
Of course, in some embodiments, the control module 50 also determines whether the heating control circuit 100 has an open circuit fault or an overcurrent fault based on the detected current output by the current detection module 30, and controls the protection module 40 and/or the switch module 20 to be turned off when the heating control circuit 100 has an open circuit fault or an overcurrent fault.
For example, when the switch module 20 is set to the on state, if the current detection module 30 detects that the detected current on the heating control circuit 100 is greater than the preset current, the control module 50 determines that the heating control circuit 100 has an overcurrent fault based on the detected current output by the current detection module 30, and if there is a safety hazard, the control module 50 controls the protection module 40 and/or the switch module 20 to be turned off, thereby turning off 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 the heating control circuit 100 has a current, the control module 50 determines that the heating control circuit 100 has an open circuit fault based on the current detection module 30 not detecting the current on the loop, and the control module 50 controls the protection module 40 and/or the switch module 20 to be turned off so as to facilitate maintenance of the circuit if the heating function cannot be achieved or the heating power cannot meet the requirement.
In addition, when the control module 50 determines that the heating control circuit 100 has an open-circuit fault, other corresponding operations may also be performed. For example, the operations such as giving an alarm and performing circuit pressure relief through other modules are not limited herein.
Specifically, the heating control circuit 100 provided by the present application has the following functions: 1. when the short-circuit fault of the switch module 20 is detected, the protection module 40 can be controlled to be cut off, so that a circuit loop is turned off, a dual control mechanism is realized, and safety accidents are avoided; 2. when the overcurrent fault of the heating control circuit 100 is determined, the control protection module 40 and/or the switch module 20 are/is controlled to be cut off, so that a circuit loop is cut off, a dual control mechanism is realized, and safety accidents are avoided; 3. when it is determined that the heating control circuit 100 has an open-circuit fault, the control protection module 40 and/or the switch module 20 are turned off, thereby implementing a dual control mechanism to avoid safety accidents.
Referring to fig. 2, fig. 2 is a block diagram of another embodiment of a heating control circuit according to the present application, in an embodiment, the heating control circuit 100 further includes a temperature detection module 60, the temperature detection module 60 is configured to detect a 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 of the heating module 10 detected by the temperature detection module 60 and the current detected by the current detection module 30, so as to ensure that the heating module 10 operates the device to be heated in an optimal temperature interval 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, according to the double-layer feedback mechanism formed by the heating control circuit 100, the temperature detection module 60 and the current detection module 30 provided by the application, the protection module 40 forms a secondary protection function on the circuit, and the switch module 20 and the protection module 40 form a double-layer control mechanism, so that the use safety and reliability of the heating control circuit 100 are effectively improved.
In some embodiments, the serial connection sequence of the protection module 40, the heating module 10, the switching module 20, and the current detection module 30 may be designed according to actual needs, which is not limited herein.
For example, the heating control circuit 100 includes a protection module 40, a heating module 10, a switching module 20, and a current detection module 30 connected in series.
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 connected in series.
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 connected in series.
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 connected in series.
As shown in fig. 1, in an embodiment of the present application, the heating control circuit 100 includes a protection module 40, a heating module 10, a switching module 20, and a current detection module 30 connected in series.
Specifically, the protection module 40 is disposed at the front ends of the heating module 10, the switching module 20 and the current detection module 30, and when the power supply end is over-current, the protection module 40 is turned off, so that the heating module 10, the switching module 20 and the current detection module 30 at the rear end can be effectively protected from being damaged by high current.
The heating module 10 is disposed between the protection module 40 and the switching module 20, and the protection module 40 and the switching module 20 can isolate both ends of the heating module 10 from a power source.
The current detection module 30 is disposed 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, and the control module 50 can accurately determine whether the switch module 20 has a short-circuit fault or not based on the detected current output by the current detection module 30, whether the heating control circuit 100 has an overcurrent fault, a short-circuit fault, and the like.
Referring to fig. 3, fig. 3 is a circuit diagram of an embodiment of a heating control circuit provided by the present application, in an embodiment, a protection module 40 includes at least a three-terminal fuse F and a first control switch Q1; the first end of the three-terminal safety element F is connected with the positive electrode B+ of the power supply, the second end of the three-terminal safety element F is connected with the input end HT POS of the heating module 10, and the third end of the three-terminal safety element F is connected with the first channel end of the first control switch Q1; the second path 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, and the present application takes the first control switch Q1 and the second control switch Q2 as an example.
When the control module 50 determines that the switch module 20 has a short-circuit fault, the first control switch Q1 is controlled to be turned on, so as to blow the three-terminal fuse element F, thereby controlling the path of the heating control circuit 100 to be turned off.
With continued reference to fig. 3, in one embodiment, the switch module 20 includes at least a second control switch Q2; 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.
Referring to fig. 3, in an embodiment, the current detection module 30 includes at least a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, and an operational amplifier a; the first resistor R1 is connected in series between the switch module 20 and the power supply negative electrode 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 further connected to the control module 50.
The fourth resistor R4 is used as a negative feedback resistor of the operational amplifier a, and is used for limiting the amplification factor of the operational amplifier a, so as to avoid the operational amplifier a from entering a locking state due to overlarge effective gain.
Referring to fig. 6, fig. 6 is a circuit diagram of an embodiment of a temperature detection module according to the present application, and in an embodiment, the temperature detection module 60 includes at least a thermistor Rx, a connector B and an eighth resistor R8. The thermistor Rx is designed to be attached to the heating module 10, 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 grounded, the first end of the eighth resistor R8 is connected to the first power source VREF, and the second end of the eighth resistor R8 is connected to the control module 50.
Referring to fig. 4 and 5, fig. 4 is a circuit configuration diagram of an embodiment of a protection module according to the present application; fig. 5 is a circuit configuration diagram of an embodiment of a switch module and a current detection module provided in the present application.
In an 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 play a role in draining when the control module 50 outputs a high level.
Referring to fig. 4, in an 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 a 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 a 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 with 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 with 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.
The first diode D1 may be a TVS diode, the second diode D2 may be a zener diode, and the third diode D3 may be a normal diode. Specifically, the branch circuit formed by the first diode D1 and the first capacitor C1 can absorb high energy output by the positive electrode b+ of the power supply, so as to avoid the damage of the first control switch Q1. The second diode D2 is configured to prevent the control terminal of the first control switch Q1 from being over-voltage; the ninth resistor R9 is used for pulling down and stabilizing the action of the control terminal and the second path terminal of the first control switch Q1 when the control module 50 outputs a low level; the third diode D3 is used to avoid current flowing from the first control switch Q1 to the control module 50, thereby avoiding damage to the control module 50.
Referring to fig. 5, in an embodiment, the switch module 20 further includes a tenth resistor R10 and a fourth diode D4, wherein a first end of the tenth resistor R10 and a first end of the fourth diode D4 are connected to a control end of the second control switch Q2, and a second end of the tenth resistor R10 and a second end of the fourth diode D4 are connected to a 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 a seventh resistor R7.
The fourth diode D4 may be a zener diode. The fourth diode D4 is configured to prevent the control terminal of the second control switch Q2 from being over-voltage; the tenth resistor R10 is used for pulling down and stabilizing the action of the control terminal and the second path terminal of the first control switch Q1 when the control module 50 outputs a low level.
With continued reference to fig. 5, in an 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 is grounded to the ground of the operational amplifier a.
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 avoiding the fluctuation of the electric signal output by the control module 50 during the acquisition of the current detection module 30.
In an embodiment, the switching module 20 and the current detecting module 30 further 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 may be a TVS tube. Specifically, the branch circuit formed by the fifth diode D5 and the fifth capacitor C5 can absorb the high energy output by the output end HT NEG of the heating module 10, so as to avoid the damage of the second control switch Q2.
Referring to fig. 6, in an embodiment, the temperature detection module 60 further includes a twelfth resistor R12, a sixth capacitor C6, and a seventh capacitor C7, wherein a first end of the twelfth resistor R12 and a first end of the sixth capacitor C6 are connected to the fourth port RT ADC of the control module 50, a second end of the twelfth resistor R12 and a first end of the seventh capacitor C7 are connected to a second end of the eighth resistor R8, and a second end of the sixth capacitor C6 and a 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 avoiding the fluctuation of the electric signal output by the control module 50 during the acquisition of the temperature detection module 60.
Specifically, the heating control circuit 100 provided by the present application has the following functions: 1. when the short-circuit fault of the switch module 20 is detected, the protection module 40 can be controlled to be cut off, so that a circuit loop is turned off, a dual control mechanism is realized, and safety accidents are avoided; 2. when the overcurrent fault of the heating control circuit 100 is determined, the control protection module 40 and/or the switch module 20 are/is controlled to be cut off, so that a circuit loop is cut off, a dual control mechanism is realized, and safety accidents are avoided; 3. when it is determined that the heating control circuit 100 has an open-circuit fault, the control protection module 40 and/or the switch module 20 are turned off, thereby implementing a dual control mechanism to avoid safety accidents. In addition, the double-layer feedback mechanism formed by the temperature detection module 60 and the current detection module 30 forms a double-layer control mechanism by the switch module 20 and the protection module 40, so that the use safety and reliability of the heating control circuit 100 are effectively improved.
Referring to fig. 7, fig. 7 is a schematic structural diagram of an embodiment of a battery module according to the present application, and the present application further 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 according to any of the above embodiments.
The heating control circuit 100 is configured to heat a plurality of battery cells through the heating module 10 in a conducting state, so as to ensure that the battery cells work in an optimal temperature range, and improve the use safety and reliability of the battery module 200.
The foregoing description is only of embodiments of the present application, and is not intended to limit the scope of the application, and all equivalent structures or equivalent processes using the descriptions and the drawings of the present application or directly or indirectly applied to other related technical fields are included in the scope of the present application.
Claims (10)
1. The heating control circuit is characterized by comprising 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 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.
2. The heating control circuit according to claim 1, wherein the control module further determines whether the heating control circuit has an open-circuit failure or an overcurrent failure based on the detection current output from the current detection module, and controls the protection module and/or the switching module to be turned off when the heating control circuit has the open-circuit failure or the overcurrent failure.
3. The heating control circuit of claim 1, wherein the heating control circuit comprises the protection module, the heating module, the switching module, and the current detection module in series.
4. A heating control circuit according to claim 3, wherein the protection module comprises a three terminal safety element and a first control switch;
The first end of the three-terminal safety element is connected with the positive electrode of the power supply, the second end of the three-terminal safety element is connected with the input end of the heating module, and the third end of the three-terminal safety element is connected with the first channel 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 with the control module;
When the control module determines that the switch module has a short-circuit fault, the first control switch is controlled to be turned on so as to fuse the three-terminal safety element, and then the passage of the heating control circuit is controlled to be turned off.
5. A heating control circuit according to claim 3, wherein the switch module comprises a second control switch;
The first passage end of the second control switch is connected with the output end of the heating module, the second passage end of the second control switch is connected with the current detection module, and the control end of the second control switch is connected with the control module.
6. The heating control circuit of claim 3, wherein 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 electrode of the power supply, the first end of the second resistor is connected with the first end of the first resistor, the second end of the second resistor is connected with the first input end of the operational amplifier, the first end of the third resistor is connected with the second end of the first resistor, the second end of the third resistor is connected with the second input end of the operational amplifier, the first end of the fourth resistor is connected with the second end of the third resistor, the second end of the fourth resistor is connected with the output end of the operational amplifier, and the output end of the operational amplifier is also connected with the control module.
7. A heating control circuit according to claim 3, wherein a sixth resistor is further connected between the control terminal 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 of any of claims 1-7, further comprising a temperature detection module for detecting a temperature on the heating module, and wherein the temperature detection module is coupled to the control module.
9. The heating control circuit of claim 8, wherein the temperature detection module comprises a thermistor, a connector, and an eighth resistor;
The first end of the thermistor is connected with the first connecting end of the connector, the second end of the thermistor is connected with the second connecting end of the connector and grounded, the first end of the eighth resistor is connected with a first power supply, and the second end of the eighth resistor is connected with the control module.
10. A battery module comprising a plurality of battery cells arranged in series and/or parallel, and a heating control circuit according to any one of claims 1 to 9; the heating control circuit is used for heating the plurality of battery monomers through the heating module in a conducting state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323223103.8U CN221575623U (en) | 2023-11-27 | 2023-11-27 | Heating control circuit and battery module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323223103.8U CN221575623U (en) | 2023-11-27 | 2023-11-27 | Heating control circuit and battery module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221575623U true CN221575623U (en) | 2024-08-20 |
Family
ID=92266882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323223103.8U Active CN221575623U (en) | 2023-11-27 | 2023-11-27 | Heating control circuit and battery module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221575623U (en) |
-
2023
- 2023-11-27 CN CN202323223103.8U patent/CN221575623U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3579300B1 (en) | Battery protection circuit and battery pack including same | |
| EP3644473B1 (en) | Battery protection circuit and battery pack comprising same | |
| CN105098727B (en) | Battery protecting circuit and method | |
| CN104883059A (en) | Double chip power protector and battery-powered electronic product production circuit | |
| CN106558980A (en) | It is a kind of to enable control circuit | |
| CN107834978B (en) | Photovoltaic array earth insulation resistance detection circuit, device and non-isolated photovoltaic inverter | |
| CN207926209U (en) | Lithium battery pack charge-discharge protection circuit | |
| CN209516621U (en) | Under-voltage protecting circuit and cell apparatus | |
| CN208589769U (en) | A kind of the power input protection circuit and power supply unit of electrical equipment | |
| CN221575623U (en) | Heating control circuit and battery module | |
| CN210350769U (en) | Overcurrent, overvoltage and undervoltage protection circuit | |
| CN103107520B (en) | Lithium ion battery overheat protector system and method | |
| CN117528847A (en) | Heating control circuit and battery module | |
| CN210092865U (en) | Switching power supply over-temperature protection circuit | |
| CN207652028U (en) | A kind of switching power circuit and its protection circuit | |
| CN216959355U (en) | Battery module return circuit protection system | |
| CN107482261A (en) | A kind of polymer battery and mobile terminal based on mobile terminal | |
| CN208738896U (en) | Charge-discharge protection circuit and electronic equipment | |
| CN113777514B (en) | Insulation detection circuit, system and method of back-up energy storage system | |
| CN203274949U (en) | Over-temperature detection and protection circuit of current transformer | |
| CN109066598A (en) | A kind of low level triggering latching circuit | |
| JP3507734B2 (en) | Electrical equipment | |
| CN211508882U (en) | Bootstrap starting circuit for widening input voltage range | |
| EP4047776B1 (en) | Fault detection apparatus and method, and grid-tied photovoltaic power generation system | |
| CN220042982U (en) | Lithium battery temperature protection circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |