Air blower controller, automobile air conditioning cabinet and vehicle

Abstract

The utility model provides an air blower controller, an automobile air conditioning box and a vehicle, the air blower controller comprises a control circuit, the input end of the control circuit is connected with a power supply, the output end of the control circuit is connected with a motor of an air blower, and the output end of the control circuit is provided with a first MOS tube; the input end of the control chip is connected with the PWM signal line, the output end of the control chip is connected with the first MOS tube, and the control chip controls the first MOS tube to be turned on and turned off according to the received PWM signal. According to the utility model, the control chip integrates the driving module and the control module, so that not only can the PWM signal be received, but also the motor can be driven to operate, and information interaction between the driving module and the control module does not need to be additionally configured.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile air conditioners, and in particular to a blower controller, an automobile air conditioner box and a vehicle. Background Art

[0002] The air conditioning box is a key component of the automobile air conditioning system. It is mainly responsible for realizing the functions of the air conditioning system, such as air outlet mode control, air volume adjustment and air outlet temperature control.

[0003] The blower in the car air-conditioning box is a key component of the air-conditioning box. The driver chip of the blower generally adopts imported chips, and there is a risk of restrictions on the application of imported chips in domestic products. In addition, driving the blower requires multiple imported chips to be used in combination, and the chips need to be jointly configured, and the configuration structure is complex. Utility Model Content

[0004] The main purpose of the utility model is to provide a blower controller, an automobile air conditioning box and a vehicle, so as to solve the technical problem of the complicated configuration structure of the drive chip of the blower.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, a blower controller is provided, including: a control circuit, the input end of the control circuit is connected to the power supply, the output end of the control circuit is connected to the motor of the blower, and a first MOS tube is provided at the output end of the control circuit; a control chip, the input end of the control chip is connected to the PWM signal line, the output end of the control chip is connected to the first MOS tube, and the control chip controls the opening and closing of the first MOS tube according to the received PWM signal.

[0006] Furthermore, it also includes: a voltage stabilizing circuit, a first end of the voltage stabilizing circuit is connected to the input end of the control circuit, a second end of the voltage stabilizing circuit is connected to the control chip, and a voltage stabilizer is provided on the voltage stabilizing circuit.

[0007] Furthermore, a second MOS tube is provided at the input end of the control circuit.

[0008] Furthermore, the output end of the control circuit has three branches arranged in parallel, each branch is connected in series with a first MOS tube, and each branch is also connected in series with a third MOS tube and a current sampling resistor, and the third MOS tube is connected to the output end of the control chip.

[0009] Furthermore, an inductor coil is provided on the control circuit.

[0010] Furthermore, the control circuit and the PWM signal line are both provided with grounding capacitors.

[0011] Furthermore, an FG signal line is provided on the control chip, and the FG signal line is used to feedback the rotation speed of the motor.

[0012] Furthermore, the model of the control chip is FU6866.

[0013] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, a car air conditioning box is provided, including a blower controller, and the blower controller is the above-mentioned blower controller.

[0014] In order to achieve the above objective, according to one aspect of the utility model, a vehicle is provided, including a blower controller, and the blower controller is the above blower controller.

[0015] By applying the technical solution of the utility model, the blower controller includes a control circuit and a control chip. The power supply provides electric energy to the motor through the control circuit. The on and off of the control circuit is controlled by the first MOS tube. The control chip controls the on and off duration of the first MOS tube according to the PWM signal. The control chip in the above solution integrates the drive module and the control module, which can not only receive the PWM signal, but also drive the motor to operate, without the need for additional configuration of information interaction between the drive module and the control module. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0017] Figure 1 A circuit schematic diagram of an embodiment of a blower controller according to the utility model is shown.

[0018] The above drawings include the following reference numerals:

[0019] 1. The first MOS tube;

[0020] 2. Control chip;

[0021] 3. Voltage stabilizer;

[0022] 4. The second MOS tube;

[0023] 5. The third MOS tube;

[0024] 6. Inductor coil;

[0025] 7. Grounding capacitor;

[0026] 8. Current sampling resistor;

[0027] 9. Motor;

[0028] 10. Transistor. DETAILED DESCRIPTION

[0029] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0030] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0031] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0032] Now, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in a variety of different forms and should not be construed as being limited to the embodiments described herein. It should be understood that these embodiments are provided to make the disclosure of the present application thorough and complete, and to fully convey the concepts of these exemplary embodiments to those of ordinary skill in the art. In the accompanying drawings, for the sake of clarity, the thickness of the layers and regions may be enlarged, and the same reference numerals are used to represent the same devices, and thus their descriptions will be omitted.

[0033] Combination Figure 1 As shown, according to a specific embodiment of the present application, a blower controller is provided.

[0034] Specifically, the blower controller includes a control circuit and a control chip 2. The input end of the control circuit is connected to the power supply, the output end of the control circuit is connected to the motor 9 of the blower, and the output end of the control circuit is provided with a first MOS tube 1. The input end of the control chip 2 is connected to the PWM signal line, and the output end of the control chip 2 is connected to the first MOS tube 1. The control chip 2 controls the opening and closing of the first MOS tube 1 according to the received PWM signal.

[0035] It should be noted that the first MOS tube 1 acts as a switch, and the operation of the motor 9 is controlled by controlling the opening and closing of the first MOS tube 1. The power supply is a normal power supply (K30), and the current on the control circuit is small. The first MOS tube 1 has the function of amplifying the current, so that the current output by the control circuit is amplified, and the operation of the motor 9 is controlled by a large current.

[0036] In the embodiment of the present application, the blower controller includes a control circuit and a control chip 2. The power supply provides electric energy to the motor 9 through the control circuit. The on and off of the control circuit is controlled by the first MOS tube 1. The control chip 2 controls the on and off duration of the first MOS tube 1 according to the PWM signal. The control chip 2 in the above scheme integrates the drive module and the control module, which can not only receive the PWM signal, but also drive the motor 9 to operate, without the need for additional configuration of information interaction between the drive module and the control module.

[0037] like Figure 1 As shown, the blower controller also includes a voltage stabilizing circuit, a first end of the voltage stabilizing circuit is connected to the input end of the control circuit, a second end of the voltage stabilizing circuit is connected to the control chip 2, and a voltage stabilizer 3 is provided on the voltage stabilizing circuit.

[0038] It should be noted that the control chip 2 controls the on and off of the voltage regulator 3, that is, when the motor 9 is running, the control chip 2 controls the voltage regulator 3 to be turned on, and when the motor 9 is turned off, the control chip 2 controls the voltage regulator 3 to be turned off. The setting of the voltage regulator 3 makes the output voltage of the control circuit more stable, so that the operation of the voltage is more stable.

[0039] like Figure 1 As shown, a second MOS tube 4 is provided at the input end of the control circuit.

[0040] It should be noted that when the power supply is reversely connected, the second MOS tube 4 plays a reverse connection protection role, and the blower controller does not work. The reverse connection time can be as long as more than 5 minutes.

[0041] like Figure 1 As shown, the output end of the control circuit has three branches arranged in parallel, each branch is connected in series with a first MOS tube 1, and each branch is also connected in series with a third MOS tube 5 and a current sampling resistor 8, and the third MOS tube 5 is connected to the output end of the control chip 2.

[0042] It should be noted that the control chip 2 controls one first MOS tube 1 to be turned on to realize the low-speed operation of the motor 9; the control chip 2 controls two first MOS tubes 1 to be turned on to realize the medium-speed operation of the motor 9; the control chip 2 controls three first MOS tubes 1 to be turned on at the same time to realize the high-speed operation of the motor 9. In order to ensure the stable operation of the motor 9, during the operation of the motor 9, the third MOS tube 5 at the corresponding position needs to be turned on to collect the input current of the branch to prevent the motor 9 from burning due to excessive current.

[0043] like Figure 1 As shown, an inductor 6 is provided on the control circuit.

[0044] It should be noted that the inductor 6 plays a filtering role in the control circuit, filtering out high-frequency noise signals and AC interference signals to ensure stable operation of the circuit.

[0045] like Figure 1 As shown, the control circuit and the PWM signal line are both provided with grounding capacitors 7.

[0046] Specifically, the control circuit has multiple grounding capacitors 7. In the embodiment of the present application, five grounding capacitors 7 are provided. The five grounding capacitors 7 are arranged in parallel. The grounding capacitors 7 have a filtering effect, filtering out interference signals on the control circuit to ensure stable operation of the circuit.

[0047] There are multiple grounding capacitors 7 on the PWM signal line. In the embodiment of the present application, two grounding capacitors 7 are set, and the two grounding capacitors 7 are set in parallel. The grounding capacitors 7 have a filtering effect, which filters out interference signals on the PWM signal line and ensures the accuracy of the PWM signal.

[0048] like Figure 1 As shown, the control chip 2 is provided with an FG signal line, and the FG signal line is used to feed back the rotation speed of the motor 9.

[0049] Specifically, there are multiple grounding capacitors 7 on the FG signal line. In the embodiment of the present application, three grounding capacitors 7 are set, and the three grounding capacitors 7 are set in parallel. The grounding capacitors 7 have a filtering effect, which filters out the interference signal on the FG signal line to ensure the accuracy of the feedback speed of the motor 9.

[0050] Specifically, a transistor 10 is provided on the FG signal line, and the transistor is used as a switch to control the output of the speed signal of the motor 9 .

[0051] It should be noted that the FG signal line is set to collect the rotation speed of the motor 9 to avoid overspeeding of the motor 9 and ensure stable operation of the motor 9.

[0052] Furthermore, the control chip 2 is a domestic chip, and the model of the control chip 2 is FU6866.

[0053] It should be noted that the use of domestic chips reduces the production cost of automobile air-conditioning boxes and reduces procurement risks.

[0054] In another specific embodiment of the present application, a vehicle air conditioning box is provided, including a blower controller, and the blower controller is the blower controller in the above embodiment.

[0055] In another specific embodiment of the present application, a vehicle is provided, including a blower controller, and the blower controller is the blower controller in the above embodiment.

[0056] From the above description, it can be seen that the above embodiments of the utility model achieve the following technical effects:

[0057] 1. The control chip 2 integrates the driving module and the control module, and can both receive the PWM signal and drive the motor 9 to operate, without the need for additional configuration of information interaction between the driving module and the control module.

[0058] 2. The control chip 2 uses domestic chips instead of imported chips, which reduces the production cost and procurement risk of the automobile air-conditioning box.

[0059] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0060] In addition to the above, it should be noted that "one embodiment", "another embodiment", "embodiment", etc. mentioned in this specification refer to the specific features, structures or characteristics described in conjunction with the embodiment included in at least one embodiment generally described in this application. The same expression appearing in multiple places in the specification does not necessarily refer to the same embodiment. Further, when describing a specific feature, structure or characteristic in conjunction with any embodiment, it is claimed that the realization of such feature, structure or characteristic in conjunction with other embodiments also falls within the scope of the present utility model.

[0061] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0062] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A blower controller, characterized in that: include: A control circuit, wherein an input end of the control circuit is connected to a power supply, an output end of the control circuit is connected to a motor of a blower, and a first MOS tube (1) is provided at the output end of the control circuit; A control chip (2), wherein an input end of the control chip (2) is connected to a PWM signal line, an output end of the control chip (2) is connected to the first MOS tube (1), and the control chip (2) controls the opening and closing of the first MOS tube (1) according to a received PWM signal.

2. The blower controller according to claim 1, characterized in that: Also includes: A voltage stabilizing circuit, wherein a first end of the voltage stabilizing circuit is connected to an input end of a control circuit, a second end of the voltage stabilizing circuit is connected to the control chip (2), and a voltage stabilizer (3) is provided on the voltage stabilizing circuit.

3. The blower controller according to claim 1, characterized in that: A second MOS tube (4) is provided at the input end of the control circuit.

4. The blower controller according to claim 1, characterized in that: The output end of the control circuit has three branches arranged in parallel, each of the branches is connected in series with the first MOS tube (1), and each of the branches is also connected in series with a third MOS tube (5) and a current sampling resistor, and the third MOS tube (5) is connected to the output end of the control chip (2).

5. The blower controller according to claim 1, characterized in that: The control circuit is provided with an inductor coil (6).

6. The blower controller according to claim 1, characterized in that: The control circuit and the PWM signal line are both provided with grounding capacitors (7).

7. The blower controller according to claim 1, characterized in that: The control chip (2) is provided with an FG signal line, and the FG signal line is used to feed back the rotation speed of the motor.

8. The blower controller according to claim 1, characterized in that: The model of the control chip (2) is FU6866.

9. An automobile air conditioning box, comprising a blower controller, characterized in that: The blower controller is the blower controller according to any one of claims 1 to 8.

10. A vehicle comprising a blower controller, characterized in that: The blower controller is the blower controller according to any one of claims 1 to 8.

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