CN105630035A - Method of detecting temperature field control system for incubator specially for sodium sulfur cell module - Google Patents

Abstract

The invention discloses a detection method for the temperature field control system of a special incubator for sodium-sulfur battery modules. The front heating plate of the special incubator for sodium-sulfur battery modules leads to the first thermocouple, the bottom heating plate leads to the second thermocouple, and the left heating plate , the rear heating plate and the right heating plate are connected in series successively, and the third thermocouple is drawn from any heating plate, and the room temperature is measured with a resistance thermometer; respectively through the first thermocouple, the second thermocouple, and the The third thermocouple measures and reads the temperature in the special incubator for the sodium-sulfur battery module; if any one of the three readings is unqualified, it is determined that the temperature sensitivity of the special incubator for the sodium-sulfur battery module is unqualified; measure The resistance value of the front heating plate, the resistance value of the bottom heating plate, the total resistance value of the left heating plate, the rear heating plate and the right heating plate; any one of the three resistance values is unqualified, The heating function of the special incubator for the sodium-sulfur battery module is unqualified.

Description

A detection method for the temperature field control system of a special incubator for sodium-sulfur battery modules

technical field

The invention relates to a detection method for a temperature field control system of a special incubator for a sodium-sulfur battery module.

Background technique

The sodium-sulfur battery module is a high-temperature energy storage system. The sodium-sulfur battery must be placed in a special incubator for operation. The normal operating temperature range of the sodium-sulfur battery must be maintained above 300°C. Therefore, the safe and stable operation of the sodium-sulfur battery is essential for the sodium-sulfur battery. The insulation performance of special insulation has higher requirements.

The temperature distribution in the special incubator for sodium-sulfur batteries affects the temperature difference between single sodium-sulfur batteries. The aging rate of single sodium-sulfur batteries is different, which shortens the overall service life of the sodium-sulfur battery module. Therefore, the special incubator for sodium-sulfur batteries is temperature sensitive. Both stability and heating stability are important evaluation indicators for the special incubator for sodium-sulfur batteries.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies of the prior art and provide a detection method for the temperature field control system of the special incubator for sodium-sulfur battery modules. , but it can accurately judge whether the temperature measurement and heating function of the special incubator for the sodium-sulfur battery module is accurately realized.

A technical solution to achieve the above purpose is: a detection method for the temperature field control system of a special incubator for sodium-sulfur battery modules, the front side wall, left side wall, rear side wall, and right side wall of the special incubator for sodium-sulfur battery modules Corresponding to the bottom wall, there are front heating plate, left heating plate, rear heating plate, right heating plate and bottom heating plate. The front heating plate leads to the first thermocouple, and the bottom heating plate leads to the second thermocouple. Described left heating plate, described rear heating plate and described right heating plate are connected in series successively, and draw the 3rd thermocouple from any heating plate wherein, comprise the following steps:

Room temperature measurement steps: measure room temperature with a resistance thermometer;

Temperature measurement step: measure the temperature in the incubator dedicated to the sodium-sulfur battery module through the first thermocouple, the second thermocouple, and the third thermocouple respectively, and take a reading with a multimeter;

Temperature sensitivity judging step: if the absolute value of the difference between the reading of any one of the first thermocouple, the second thermocouple, and the third thermocouple and the room temperature is greater than 5°C, then it is judged that the sodium The temperature sensitivity of the special incubator for sulfur battery modules is unqualified;

Resistance measurement steps: measure separately with a multimeter:

The resistance value of the front heating plate, the resistance value of the bottom heating plate, the total resistance value of the left heating plate, the rear heating plate and the right heating plate;

Heating function judging step: if and only if the resistance value of the front heating plate and the resistance value of the bottom heating plate are both between 90-210Ω, and the left heating plate, the rear heating plate and the right heating plate When the total resistance value of the heating plate is between 90-110Ω, the heating function of the special incubator for the sodium-sulfur battery module is qualified.

The technical scheme of the detection method of the temperature field control system of a special incubator for sodium-sulfur battery modules of the present invention is adopted. The front heating plate of the special incubator for sodium-sulfur battery modules leads to the first thermocouple, and the bottom heating plate leads to the second thermocouple. Couple, the left heating plate, the rear heating plate and the right heating plate are connected in series successively, and the third thermocouple is drawn from any one of the heating plates, and the room temperature is first measured with a resistance thermometer; through the first thermocouple and the second thermocouple respectively couple, and the third thermocouple to measure and read the temperature in the special incubator for the sodium-sulfur battery module; if any one of the three readings is unqualified, it is determined that the temperature in the special incubator for the sodium-sulfur battery module is sensitive unqualified; measure the resistance value of the front heating plate, the resistance value of the bottom heating plate, the total resistance value of the left heating plate, the rear heating plate and the right heating plate; among the three resistance values If any one is unqualified, the heating function of the special incubator for the sodium-sulfur battery module is unqualified. Its technical effect is: the measurement method is simple, it does not need to heat the special incubator for the sodium-sulfur battery module, it is easy to operate, but it can accurately judge whether the temperature measurement and heating function of the special incubator for the sodium-sulfur battery module is accurately realized.

Description of drawings

Figure 1 is a schematic diagram of the structure of a dedicated incubator for sodium-sulfur battery modules.

Figure 2 is a schematic diagram of the placement of the resistance thermometer.

Fig. 3 is a flow chart of the detection method of the temperature field control system of a special incubator for sodium-sulfur battery modules of the present invention.

detailed description

Please refer to Fig. 1, in order to better understand the technical solution of the present invention, the inventors of the present invention will describe in detail below in conjunction with the accompanying drawings through specific embodiments:

Please refer to FIG. 1 , the current special incubator for sodium-sulfur battery modules consists of a box body 1 and a heat-insulated and sealed incubator cover at the top of the box body 1 . The front side wall of the box body 1 is provided with a front heating plate 11, the rear side wall of the box body 1 is provided with a rear heating plate 12, the left side wall of the box body 1 is provided with a left heating plate 13, and the right side wall of the box body 1 There is a right heating plate 14, and the bottom wall of the box body 1 is provided with a bottom heating plate 15 to ensure that the box body 1 can be heated evenly. The first thermocouple 21 connected to the front heating plate 11 is drawn out from the box body 1 to heat the bottom. The second thermocouple 22 connected to the plate 15, and the third thermocouple 23 connected to any one of the rear heating plate 12, the left heating plate 13 and the right heating plate 14. The left heating plate 13, the rear heating plate 12 and the right heating plate 14 are sequentially connected in series.

A method for detecting the temperature field control system of a special incubator for sodium-sulfur battery modules of the present invention comprises the following steps

Room temperature measurement steps: place a calibrated resistance thermometer 3 within a straight-line distance R of less than or equal to 2 meters from the box 1 of the special incubator for sodium-sulfur battery modules, that is, within the dotted line in Figure 2, and let it stand for 15 minutes , the reading of the resistance thermometer 3 is the room temperature.

Temperature measurement step: adjust the multimeter to the temperature range, and read the temperature in the box 1 through the first thermocouple 21, the second thermocouple 22, and the third thermocouple 23 respectively.

Temperature sensitivity judging step: the absolute value of the difference between the reading on the multimeter and the room temperature of any one of the first thermocouple 21, the second thermocouple 22, and the third thermocouple 23 is greater than 5°C, then it is judged that the The temperature sensitivity of the special incubator for sodium-sulfur battery modules is unqualified, and the absolute value of the difference between the readings of the first thermocouple 21, the second thermocouple 22, and the third thermocouple 23 and the room temperature is less than or equal to 5 ℃, the temperature sensitivity of the special incubator for sodium-sulfur battery modules is qualified, that is, the temperature measurement function is qualified.

Resistance measurement steps: adjust the multimeter to the resistance file, and measure separately through the multimeter:

The resistance value of front heating plate 11, the resistance value of bottom heating plate 15, the total resistance value of left heating plate 13, rear heating plate 12 and right heating plate 14;

Heating function judgment step: if and only if the resistance value of the current heating plate 11 and the resistance value of the bottom heating plate 15 are both between 90-210Ω, and the total of the left heating plate 13, the rear heating plate 12 and the right heating plate 14 When the resistance value is between 90-110Ω, the heating function of the special incubator for sodium-sulfur battery modules, that is, the heating stability is qualified; if the resistance value of the front heating plate 11, the resistance value of the bottom heating plate 15, and the left heating plate 13. If any one of the total resistance values of the rear heating plate 12 and the right heating plate 14 does not meet the requirements, then the heating function of the incubator dedicated to the sodium-sulfur battery module, that is, the heating stability is unqualified.

The detection method of the temperature field control system of a special incubator for sodium-sulfur battery modules of the present invention has a simple measurement method, does not need to heat the special incubator for sodium-sulfur battery modules, is easy to operate, and can accurately judge the special incubator for sodium-sulfur battery modules Whether the temperature measurement and heating function can be accurately realized.

Those of ordinary skill in the art should recognize that the above embodiments are only used to illustrate the present invention, rather than as a limitation to the present invention, as long as within the scope of the spirit of the present invention, the above-described embodiments Changes and modifications will fall within the scope of the claims of the present invention.

Claims (3)

1. a Special insulation box for sodium-sulfur cell module temperature station control system detection method, the front side wall of this Special insulation box for sodium-sulfur cell module, left side wall, rear wall, right side wall and diapire are correspondingly provided with front hot plate, left hot plate, post-heating plate, right hot plate and bottom hot plate, the first thermocouple drawn by described front hot plate, described bottom hot plate draws the second thermocouple, described left hot plate, described post-heating plate and described right hot plate are sequentially connected in series, and three thermocouple drawn by any one piece of hot plate from which, comprises the following steps:

Indoor temperature measurement step: by resistance thermometer measure room temperature;

Temperature measuring step: respectively through described first thermocouple, described second thermocouple, and described three thermocouple, the temperature in this Special insulation box for sodium-sulfur cell module is measured, and carry out reading by circuit tester;

Temperature sensitivity judges step: described first thermocouple, described second thermocouple, and the reading of any one thermocouple and the absolute value of the difference of room temperature more than 5 DEG C, then judge that the temperature sensitivity of this Special insulation box for sodium-sulfur cell module is defective in described three thermocouple;

Resistance measurement step: measured respectively by circuit tester:

The resistance value of described front hot plate, the resistance value of described bottom hot plate, the total resistance value of described left hot plate, described post-heating plate and described right hot plate;

Heating function judges step: the resistance value of and if only if described front hot plate and the resistance value of described bottom hot plate are all between 90-210 ��, and the total resistance value of described left hot plate, described post-heating plate and described right hot plate between 90-110 �� time, the heating function of this Special insulation box for sodium-sulfur cell module is just qualified.

2. a kind of Special insulation box for sodium-sulfur cell module temperature station control system detection method according to claim 1, it is characterised in that: before measuring room temperature, described resistance thermometer stands 15 minutes.

3. a kind of Special insulation box for sodium-sulfur cell module temperature station control system detection method according to claim 1, it is characterised in that: the distance between described resistance thermometer and described Special insulation box for sodium-sulfur cell module is less than or equal to 2m.