CN112014670A - Automatic detection system and method for automobile PTC high-pressure air heating electric heater - Google Patents
Automatic detection system and method for automobile PTC high-pressure air heating electric heater Download PDFInfo
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- CN112014670A CN112014670A CN202010862354.2A CN202010862354A CN112014670A CN 112014670 A CN112014670 A CN 112014670A CN 202010862354 A CN202010862354 A CN 202010862354A CN 112014670 A CN112014670 A CN 112014670A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/005—Testing of electric installations on transport means
- G01R31/006—Testing of electric installations on transport means on road vehicles, e.g. automobiles or trucks
- G01R31/007—Testing of electric installations on transport means on road vehicles, e.g. automobiles or trucks using microprocessors or computers
Abstract
The invention discloses an automatic detection system of an automobile PTC high-voltage air heating electric heater, which comprises a test computer and a control module; the test computer is connected with a high-voltage direct-current power supply and a low-voltage power supply in the high-voltage air heating electric heater; the high-voltage direct-current power supply and the low-voltage power supply are connected with the PTC product together; the control module is respectively connected with a low-voltage direct-current power supply and a blower; the test computer is connected with the control module. The invention has simple integral structure and principle, realizes automatic operation in the whole process, has low cost due to the uncomplicated processing technology and realizes the maximization of the profit of enterprises.
Description
Technical Field
The invention relates to the field of automobile accessories, in particular to an automatic detection system and method for an automobile PTC high-voltage air heating electric heater.
Background
PTC is an abbreviation for Positive Temperature Coefficient, and generally refers to a semiconductor material or a device having a large Positive Temperature Coefficient. As a novel thermistor material, the main application of the thermistor material can be divided into two categories of switch and heating. Various heater products made by utilizing the characteristics of stable performance, rapid temperature rise, small influence of power supply voltage fluctuation and the like of the heating PTC are the most ideal substitute products of the metal resistance wire heating materials.
Environmental protection is an important topic in China and even the world, wherein reduction of greenhouse gas emission in the traffic field is an important means for solving global climate change. The electric automobile is beneficial to saving energy and reducing the emission of carbon dioxide, thereby having wide market prospect. The air conditioner is widely applied to automobile air conditioners, electric automobile defrosters and the like.
Electric vehicles typically employ a battery as an energy storage device and an electric motor as a driving device. Compared with the traditional fuel oil automobile, the electric automobile can not utilize the heat generated by the engine to meet the heating function in the automobile, so a heating source and a heating loop are required to be added, an electric heater is introduced, and the heating problem of the electric automobile is effectively solved.
The existing PTC high-pressure air-warming electric heater detection system needs to be provided with a heating and ventilation pipeline, an air blower, an air-warming electric heater, a warm air switch, a high-voltage relay and a vehicle control unit. The air inlet of the air blower is arranged at the air inlet of the heating equipment shell, and the air outlet of the air blower is arranged at the air heating type electric heater. The high-voltage relay is connected in series between the air heating type electric heater and the high-voltage direct-current power supply. And the vehicle control unit is respectively connected with the warm air switch, the blower and the high-voltage relay. And the vehicle controller sends a closing command to the high-voltage relay under the conditions that the warm air switch is pressed down, the air blower is in a non-zero gear and the current power consumption of the whole vehicle does not exceed a first threshold value, so that the air-warming electric heater starts to heat. The detection system does not need a heating and ventilation pipeline and a vehicle control unit, directly heats cold air entering from the air blower, and detects related parameters such as heating power of a product.
In summary, there is a need for a detection system with high test accuracy, fast response time, and automatic detection functions of over-voltage and under-voltage protection function for low-voltage power supply, over-voltage and under-voltage protection function for high-voltage power supply, high-voltage withstand voltage test protection, dry-fire protection test, and the like.
Disclosure of Invention
The invention can solve the technical defects, provides an automatic detection system and method for the automobile PTC high-voltage air heating electric heater, and overcomes the defects of the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides an automatic check out system of warm electric heater of car PTC high-pressure air which characterized in that: comprises a testing computer and a control module; the test computer is connected with a high-voltage direct-current power supply and a low-voltage power supply in the high-voltage air heating electric heater; the high-voltage direct-current power supply and the low-voltage power supply are connected with the PTC product together; the control module is respectively connected with a low-voltage direct-current power supply and a blower; the test computer is connected with the control module.
The detected PTC product is used for providing a heat source for an air conditioning system in an automobile and is installed at the position of an HVAC (heating ventilating and air conditioning) warm air core body. The main functions of the PTC high-pressure air heating electric heater are as follows: heater power, feedback operating conditions, and fault information are regulated based on input of AC (AC is an english abbreviation for air conditioning system). The PTC high-voltage air heating electric heater sends the working state, the power level, the fault information and the like to the AC through LIN communication and is managed by the AC.
According to a further optimized scheme, the PTC high-pressure air heating electric heater product comprises a PTC controller, a PTC body assembly, a high-voltage wiring harness assembly, a low-voltage wiring harness assembly and a ground wire; a PTC control plate component, a controller shell and a controller shell cover are arranged in the PTC controller; an electric heating element with a positive temperature coefficient, an environment temperature sensor and an internal temperature sensor are arranged in the PTC body; a test computer and a control module are arranged in the automatic detection system of the PTC high-voltage air-heating electric heater; the test computer is connected with a high-voltage direct-current power supply and a low-voltage power supply in the high-voltage air heating electric heater; the high-voltage direct-current power supply and the low-voltage power supply are connected with the PTC product together; the control module is respectively connected with a low-voltage direct-current power supply and a blower; the test computer is connected with the control module.
In a further optimized scheme, the test computer adopts an industrial personal computer.
In a further optimized scheme, the high-voltage direct-current power supply and the low-voltage direct-current power supply are respectively provided with an RS232 communication module.
The invention also provides an automatic detection method of the automobile PTC high-pressure air heating electric heater, which is characterized by comprising the following steps:
the method comprises the following steps:
1) the testing computer sends an instruction to the PTC product, and the PTC product works at the set power of 3000W;
2) when the PTC product works to reach the set power of 3000W, a feedback signal is sent to a software system in the testing computer, the software system compares the working power fed back by the PTC product with the output power fed back by the high-voltage power supply, and if the deviation is large, the product is judged to be bad, otherwise, the product is judged to be OK;
3) the testing computer controls the voltage output of the high-voltage direct-current power supply and the low-voltage direct-current power supply through the RS232 communication module, tests the over-voltage and under-voltage protection function of the low-voltage end power supply, the over-voltage and under-voltage protection function of the high-voltage end power supply and the high-voltage withstand voltage testing protection function of the product, a software system utilizes the self-checking function and the communication function of the PTC product and uploads the existing state and related parameters of the product to an upper testing computer, the software system in the testing computer automatically judges whether each function and parameter of the product meet the design requirements of the product according to the testing standard of the PTC product, the product is judged to be an OK product if the function and parameter;
4) and the upper test computer controls the control module of the power supply through the RS232 communication module, controls the startup/shutdown of the air blower according to the PTC product test conditions to test the dry burning test protection function, and stores the product test data according to the relevant information of the product bar code.
Compared with the prior art, the invention has the beneficial effects that due to the adoption of the technology, the invention has the following advantages:
1. the invention has simple integral structure and principle, realizes automatic operation in the whole process, has low cost due to the uncomplicated processing technology and realizes the maximization of the profit of enterprises.
2. The invention has high test precision and quick response time, can realize automatic detection of over-voltage and under-voltage of low-voltage end power supply, over-voltage and under-voltage protection function of high-voltage end power supply, high-voltage withstand voltage test protection, dry burning protection test and the like of a product, and is time-saving, labor-saving, convenient and quick.
Drawings
Fig. 1 is a schematic block diagram of a method according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described implementations are only a part of the embodiments of the present invention, and not all of the embodiments.
Examples
As shown in fig. 1, an automatic detection system for a PTC high-voltage air-heating electric heater of an automobile corresponds to an automobile body, the automobile body is provided with the high-voltage air-heating electric heater, and a high-voltage dc power supply and a low-voltage power supply are arranged in the high-voltage air-heating electric heater. The above devices are all in the prior art, so the structure, principle and connection mode thereof belong to the prior art and are not described again.
The automatic detection system of the PTC high-voltage air-heating electric heater comprises a test computer and a control module; the test computer is connected with a high-voltage direct-current power supply and a low-voltage power supply in the high-voltage air heating electric heater; the high-voltage direct-current power supply and the low-voltage power supply are connected with the PTC product together; the control module is respectively connected with a low-voltage direct-current power supply and a blower; the test computer is connected with the control module.
The test computer is an industrial personal computer. And the high-voltage direct-current power supply and the low-voltage direct-current power supply are respectively provided with an RS232 communication module.
The detected PTC product is used for providing a heat source for an air conditioning system in an automobile and is installed at the position of an HVAC (heating ventilating and air conditioning) warm air core body. The main functions of the PTC high-pressure air heating electric heater are as follows: heater power, feedback operating conditions, and fault information are regulated based on input of AC (AC is an english abbreviation for air conditioning system). The PTC high-voltage air heating electric heater sends the working state, the power level, the fault information and the like to the AC through LIN communication and is managed by the AC.
The invention also provides an automatic detection method of the automobile PTC high-pressure air heating electric heater, which comprises the following steps:
1) and the testing computer sends an instruction to the PTC product, and the PTC product works at the set power of 3000W.
2) And when the PTC product works to reach the set power of 3000W, a feedback signal is sent to a software system in the testing computer, the software system compares the working power fed back by the PTC product with the output power fed back by the high-voltage power supply, and the product is judged to be bad once the deviation is large, otherwise, the product is judged to be OK.
3) The testing computer controls the voltage output of the high-voltage direct-current power supply and the low-voltage direct-current power supply through the RS232 communication module, tests the over-voltage and under-voltage protection function of the low-voltage end power supply, the over-voltage and under-voltage protection function of the high-voltage end power supply and the high-voltage withstand voltage testing protection function of the product, the software system utilizes the self-checking function and the communication function of the PTC product and uploads the existing state and related parameters of the product to the upper testing computer, the software system in the testing computer automatically judges whether each function and parameter of the product meet the design requirements of the product according to the testing standard of the PTC product, the product is judged to be an OK product if the function and parameter.
4) And the upper test computer controls the control module of the power supply through the RS232 communication module, controls the startup/shutdown of the air blower according to the PTC product test conditions to test the dry burning test protection function, and stores the product test data according to the relevant information of the product bar code.
The method is completed by an internal program, the obtained conclusion is reliable, and traceability is realized.
The invention has simple integral structure and principle, realizes automatic operation in the whole process, has low cost due to the uncomplicated processing technology and realizes the maximization of the profit of enterprises.
The invention has high test precision and quick response time, can realize automatic detection of over-voltage and under-voltage of low-voltage end power supply, over-voltage and under-voltage protection function of high-voltage end power supply, high-voltage withstand voltage test protection, dry burning protection test and the like of a product, and is time-saving, labor-saving, convenient and quick.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (5)
1. The utility model provides an automatic check out system of warm electric heater of car PTC high-pressure air which characterized in that: comprises a testing computer and a control module; the test computer is connected with a high-voltage direct-current power supply and a low-voltage power supply in the high-voltage air heating electric heater; the high-voltage direct-current power supply and the low-voltage power supply are connected with the PTC product together; the control module is respectively connected with a low-voltage direct-current power supply and a blower; the test computer is connected with the control module.
2. The automatic detection system for the PTC high-pressure air heating electric heater of the automobile as claimed in claim 1, wherein: the PTC high-pressure air heating electric heater product comprises a PTC controller, a PTC body assembly, a high-voltage wiring harness assembly, a low-voltage wiring harness assembly and a ground wire; a PTC control plate component, a controller shell and a controller shell cover are arranged in the PTC controller; an electric heating element with a positive temperature coefficient, an environment temperature sensor and an internal temperature sensor are arranged in the PTC body; a test computer and a control module are arranged in the automatic detection system of the PTC high-voltage air-heating electric heater; the test computer is connected with a high-voltage direct-current power supply and a low-voltage power supply in the high-voltage air heating electric heater; the high-voltage direct-current power supply and the low-voltage power supply are connected with the PTC product together; the control module is respectively connected with a low-voltage direct-current power supply and a blower; the test computer is connected with the control module.
3. The automatic detection system for the PTC high-pressure air heating electric heater of the automobile as claimed in claim 1, wherein: the test computer is an industrial personal computer.
4. The automatic detection system for the PTC high-pressure air heating electric heater of the automobile as claimed in claim 1, wherein: and the high-voltage direct-current power supply and the low-voltage direct-current power supply are respectively provided with an RS232 communication module.
5. The automatic detection method of the automotive PTC high-pressure air heating electric heater according to claim 1, characterized in that:
the method comprises the following steps:
1) the testing computer sends an instruction to the PTC product, and the PTC product works at the set power of 3000W;
2) when the PTC product works to reach the set power of 3000W, a feedback signal is sent to a software system in the testing computer, the software system compares the working power fed back by the PTC product with the output power fed back by the high-voltage power supply, and if the deviation is large, the product is judged to be bad, otherwise, the product is judged to be OK;
3) the testing computer controls the voltage output of the high-voltage direct-current power supply and the low-voltage direct-current power supply through the RS232 communication module, tests the over-voltage and under-voltage protection function of the low-voltage power supply, the over-voltage and under-voltage protection function of the high-voltage power supply and the high-voltage withstand voltage testing protection function of the product, the software system utilizes the self-checking function and the communication function of the PTC product and uploads the corresponding testing state and related parameters of the product to the upper computer testing computer, the software system in the testing computer automatically judges whether each function and parameter of the product meet the design requirements of the product according to the testing standard of the PTC product, the product is judged to be an OK product if the function and;
4) and the upper test computer controls the control module of the power supply through the RS232 communication module, controls the startup/shutdown of the air blower according to the PTC product test conditions to test the dry burning test protection function, and stores the product test data according to the relevant information of the product bar code.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010862354.2A CN112014670A (en) | 2020-08-25 | 2020-08-25 | Automatic detection system and method for automobile PTC high-pressure air heating electric heater |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010862354.2A CN112014670A (en) | 2020-08-25 | 2020-08-25 | Automatic detection system and method for automobile PTC high-pressure air heating electric heater |
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| CN202010862354.2A Pending CN112014670A (en) | 2020-08-25 | 2020-08-25 | Automatic detection system and method for automobile PTC high-pressure air heating electric heater |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113029630A (en) * | 2021-04-29 | 2021-06-25 | 福建坤华智能装备有限公司 | Hydrothermal PTC intelligent detection system of new energy automobile |
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| CN113029630A (en) * | 2021-04-29 | 2021-06-25 | 福建坤华智能装备有限公司 | Hydrothermal PTC intelligent detection system of new energy automobile |
| CN113029630B (en) * | 2021-04-29 | 2023-08-01 | 福建坤华智能装备有限公司 | New energy automobile hydrothermal PTC intelligent detection system |
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