CN211347217U

CN211347217U - Active atmospheric pressure meter calibrating device

Info

Publication number: CN211347217U
Application number: CN202020265903.3U
Authority: CN
Inventors: 范素红
Original assignee: Liaoning Zhongcheng Testing Co ltd
Current assignee: Liaoning Zhongcheng Testing Co ltd
Priority date: 2020-03-06
Filing date: 2020-03-06
Publication date: 2020-08-25
Anticipated expiration: 2030-03-06

Abstract

The utility model discloses an active atmospheric pressure meter calibrating device, including body, upper end cover, lithium ion battery intelligent management system and multistage formula balanced system, the top fixedly connected with fixture block of body, the draw-in groove has been seted up to the bottom of upper end cover, the bottom fixedly connected with sealing washer of upper end cover, the top of upper end cover is provided with the observation window, lithium ion battery intelligent management system includes central processing unit, central processing unit's sensor's signal input part electric connection respectively has charging module, balanced module, data acquisition module, electric quantity calculation module, data display module and storage communication module. The utility model discloses possess convenient to use's advantage, solved inside not providing the power of current atmospheric pressure meter calibrating device, some ambient pressure check out test set volume at present is great, carries out data processing by the singlechip, needs DC power supply, and conventional atmospheric pressure meter device can not satisfy the problem that all kinds of pressure detection need.

Description

Active atmospheric pressure meter calibrating device

Technical Field

The utility model relates to a pressure surface calibration technical field specifically is active atmospheric pressure meter calibrating device.

Background

The calibration of the general pressure gauge mainly comprises zero error calibration, indicating error calibration, return error calibration, tapping displacement calibration, pointer deflection stability inspection and other items, wherein the most important is indicating error calibration, the indicating value calibration of the pressure gauge is a method for directly comparing the indicating value of a standard device with the indicating value of the pressure gauge to be tested, the standard device and the pressure gauge to be tested are pressurized by a pressure calibrator (a pressure pump) during calibration, the pressure is uniformly and slowly pressurized to each calibration point (namely the indicating value of the standard device) from zero, the indicating value of the pressure gauge to be tested is read at the same time, calibration is carried out on the selected calibration point in sequence until the upper limit of measurement is reached, then, a pressure source is cut off, pressure resistance is kept for 3min, pressure reduction is carried out in sequence point by point until zero calibration is carried out, the pressure gauge (sheet) with positive and negative pressure ranges respectively carries out indicating error calibration of the positive and negative pressure ranges, the pressure verification is usually implemented by placing a pressure gauge to be detected into an atmospheric pressure gauge device, sealing the pressure gauge device by covering a cover, connecting a pressure tester with the pressure port, and pressurizing or depressurizing the pressure tester by a pressure pump so as to realize the purpose of verifying the instrument.

The existing active barometric pressure gauge calibration device is inconvenient to use, the existing barometric pressure gauge calibration device is small in size, a power supply is not generally provided in the device, some environmental pressure detection equipment on an existing automobile detection line are large in size, a single chip microcomputer is used for data processing, a direct-current power supply is needed, and the conventional barometric pressure gauge device cannot meet the requirements of various pressure detection.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an active atmospheric pressure meter calibrating device, possess the advantage of convenient to use, it is not convenient for use to have solved current active atmospheric pressure meter calibrating device, current atmospheric pressure meter calibrating device is big all the volume less, its inside generally does not provide the power, some ambient pressure check out test set volume on the present automobile detection line are great, carry out data processing by the singlechip, need DC power supply, conventional atmospheric pressure meter device can not satisfy the problem that all kinds of pressure detection need.

In order to achieve the above object, the utility model provides a following technical scheme: active atmospheric pressure meter calibrating device, including body, upper end cover, lithium ion battery intelligent management system and multistage formula balanced system, the top fixedly connected with fixture block of body, the draw-in groove has been seted up to the bottom of upper end cover, the bottom fixedly connected with sealing washer of upper end cover, the top of upper end cover is provided with the observation window, lithium ion battery intelligent management system includes central processing unit, central processing unit's signal input part electric connection has charging module, balanced module, data acquisition module, electric quantity calculation module, data display module and storage communication module respectively, data acquisition module includes voltage acquisition, current collection and temperature acquisition.

Preferably, the number of the fixture blocks is six, the fixture blocks are distributed on the top of the body in a surrounding mode, and the fixture blocks are in a tooth-shaped annular shape.

Preferably, the four corners of the clamping groove are rounded and chamfered, and the clamping groove is matched with the clamping block.

Preferably, the observation window is made of toughened glass material, and the shape of the observation window is a circular shape.

Preferably, the body is cylindrical, and the sealing ring is made of rubber.

Preferably, the multi-stage equalizing system comprises a controller, an input end of the controller is electrically connected with an output end of the battery pack, an input end of the battery pack is electrically connected with a first-stage equalizing module and a second-stage equalizing module, an input end of the first-stage equalizing module is electrically connected with a switch tube (IGBT) control network, and an input end of the switch tube (IGBT) control network is electrically connected with an output end of the battery pack.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model discloses an adopt wide body atmospheric pressure meter calibrating device can the great ambient pressure monitoring facilities of detection volume, wide big volume can also hold the singlechip, multiple signal acquisition such as DSP (digital signal processor), detect and processing unit, and make it integrated as one set of complete detecting system, thereby need not long-line connection improve the detection precision and improve detecting system's anti-electromagnetic interference ability, built-in multiunit DC power supply simultaneously, then needn't not trompil on the lateral wall that needs sealed atmospheric pressure meter calibrating device and insert the power, existing gas tightness that does benefit to detecting device like this, can make processing technology simple again, and the production cost is reduced.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic top view of the present invention;

FIG. 3 is a schematic view of the upper end cap of the present invention;

fig. 4 is a schematic view of the top end cover of the present invention;

fig. 5 is a schematic structural view of the sealing ring of the present invention;

FIG. 6 is a schematic view of the observation window of the present invention;

fig. 7 is a block diagram of the intelligent management system for lithium ion batteries of the present invention;

fig. 8 is a schematic block diagram of the multi-stage equalization system of the present invention.

In the figure: the device comprises a body 1, a clamping block 2, an upper end cover 3, a sealing ring 4, a clamping groove 5 and an observation window 6.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to be referred must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "connected", and the like are to be construed broadly, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The utility model provides a parts such as body 1, fixture block 2, upper end cover 3, sealing washer 4 and observation window 6 are the parts that general standard component or field technician know, and its structure and principle all can learn through the technical manual or learn through conventional experimental method for field technician.

Referring to fig. 1-8, the active barometric pressure calibration device includes a body 1, an upper end cap 3, a lithium ion battery intelligent management system and a multi-stage equalization system, wherein the body 1 is cylindrical, six fixture blocks 2 are fixedly connected to the top of the body 1, the fixture blocks 2 are distributed around the top of the body 1, the fixture blocks 2 are in the shape of a toothed ring, a slot 5 is formed in the bottom of the upper end cap 3, four corners of the slot 5 are rounded and chamfered, the slot 5 is matched with the fixture block 2, a sealing ring 4 is fixedly connected to the bottom of the upper end cap 3, the sealing ring 4 is made of rubber, an observation window 6 is arranged on the top of the upper end cap 3, the observation window 6 is made of tempered glass, the observation window 6 is circular, the lithium ion battery intelligent management system includes a central processing unit, and signal input ends of the central processing unit are electrically connected with a charging module respectively, The system comprises a balancing module, a data acquisition module, an electric quantity calculation module, a data display module and a storage communication module, wherein the data acquisition module comprises voltage acquisition, current acquisition and temperature acquisition, a multistage balancing system comprises a controller, the input end of the controller is electrically connected with the output end of a battery pack, the input end of the battery pack is electrically connected with a 1 st stage balancing module and a 2 nd stage balancing module, the input end of the 2 nd stage balancing module is electrically connected with a switching tube (IGBT) control network, the input end of the switching tube (IGBT) control network is electrically connected with the output end of the battery pack, a large-size environmental pressure monitoring device can be detected by adopting a wide-body barometric pressure gauge calibration device, the wide-size environmental pressure monitoring device can also contain a single chip microcomputer, a DSP (digital signal processor) and other signal acquisition, detection and processing units, and the wide-size environmental pressure monitoring device is integrated into a set of, the detection precision is improved and the anti-electromagnetic interference capability of the detection system is improved without long-line connection, and meanwhile, a plurality of groups of direct current power supplies are arranged in the detection system, so that the power supply is connected without opening a hole on the side wall of the atmospheric pressure meter calibration device needing to be sealed, the air tightness of the detection device is facilitated, the processing technology is simple, and the production cost is reduced.

When the device is used, the lower bottom surface of the cylindrical body 1 is a circular plane and is used for placing devices such as a standard pressure gauge, a pressure gauge to be detected, a plurality of groups of direct current power supplies and the like, the upper bottom surface of the cylindrical body 1 is processed into a circular ring shape with the periphery being in a tooth shape, the periphery of the cover end of the annular upper cover is provided with a circular ring structure, the grooves and the teeth distributed on the upper bottom surface of the cylindrical body 1 are used for matching positions and locking an upper cover and the body 1 of an atmospheric pressure gauge calibration device, an O-shaped gasket is made of silica gel materials and used for sealing the upper cover, the body 1 and a glass flat plate window, the built-in plurality of groups of direct current power supplies are 5V, 6V, 9V, 12V and 24V multi-path power supplies which can output 1A current, the power supplies are formed by combining and connecting a plurality of single lithium batteries in series, and the lithium ion batteries are usually connected in series, there is the capacity difference between each battery monomer of lithium ion battery group, though the electric current that flows through the battery cell is the same, but because its capacity is different, the meeting shallow charging shallow discharging that the capacity is big, the meeting overcharge overdischarging that the capacity is little, along with the increase of charge-discharge number of times, the capacity difference will be bigger and bigger, lead to the battery to become invalid in advance, in order to improve the unbalance nature that appears in the series connection lithium ion battery group use, the life of extension lithium ion, need carry out balanced control to the battery, and intelligent management, in realizing lithium ion battery intelligent management system, mainly include following several big modules: the system mainly uses a single chip microcomputer as a core, further judges the state of the battery pack such as charging, discharging, idling, overcurrent and the like by collecting relevant current information, processes or adjusts the actual state, determines whether to open the equalizing module or not by a system after collecting and analyzing the voltage of each lithium ion battery so as to realize the energy equalizing control of the lithium ion battery pack, collects the related temperature, mainly avoids the overheating of the system temperature, and displays the running state, the current voltage condition, the temperature, the residual electric quantity and other parameters of the whole system in real time on a liquid crystal display, the utility model adopts the LTC6802 to detect the voltage of the battery pack, one LTC6802 is directly connected with up to 12 single batteries, the voltage of each battery is digitalized into a 12-bit word with the resolution of 1.5mV, the plurality of LTCs 6802 can be connected in series and overlapped without an optical coupler or an isolator, a voltage detection circuit can be designed in a modularized way, the number of batteries can be flexibly expanded, the current measurement provides data for SOC estimation, charge and discharge control and the like, the current of the power lithium ion battery pack is often large, the current detection generally adopts a Hall current sensor, the temperature measurement is used for accurately monitoring the operating temperature of the battery pack in real time, and an intelligent temperature sensor has the advantages of high measurement precision, quick switching time, easy online programming, multipoint parallel measurement, convenient measurement and installation and the like, the utility model adopts single bus intellectualization for detecting the working temperature of the battery pack, a temperature sensor DS18B20, and a plurality of single lithium batteries are needed by a plurality of direct current power supplies, so the utility model discloses a hierarchical equalization technology, namely, the whole series battery pack is divided into a plurality of small blocks, firstly, each block is equalized, after the round of equalization is finished, the whole battery pack is equalized, the energy conversion rate and the equalization efficiency are sequentially improved, and according to the n-level equalization system of the strategy, a schematic diagram is shown in fig. 8, wherein a 1 st-level equalization module of the system adopts a multi-winding transformer equalization circuit, a 2 nd-level equalization module adopts an improved DC-DC multi-primary-side-winding transformer equalization circuit, and in the hierarchical equalization, the battery packs are connected in series in groups.

In summary, the following steps: this active atmospheric pressure meter calibrating device, through body 1, fixture block 2, upper end cover 3, sealing washer 4, draw-in groove 5, observation window 6, lithium ion battery intelligent management system and multistage formula equalizing system's cooperation is used, it is not convenient for use to have solved current active atmospheric pressure meter calibrating device, current atmospheric pressure meter calibrating device is big all small, it is inside generally not to provide the power, some environmental pressure detection equipment on the present automobile detection line are bulky, carry out data processing by the singlechip, need DC power supply, conventional atmospheric pressure meter device can not satisfy the problem that all kinds of pressure detection need.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Active atmospheric pressure meter calibrating device, including body (1), upper end cover (3), lithium ion battery intelligent management system and multistage formula equalizing system, its characterized in that: the utility model discloses a lithium ion battery intelligent management system, including body (1), top fixedly connected with fixture block (2), draw-in groove (5) have been seted up to the bottom of upper end cover (3), the bottom fixedly connected with sealing washer (4) of upper end cover (3), the top of upper end cover (3) is provided with observation window (6), lithium ion battery intelligent management system includes central processing unit, central processing unit's signal input part electric connection has charging module, balanced module, data acquisition module, electric quantity calculation module, data display module and storage communication module respectively, data acquisition module includes voltage acquisition, current acquisition and temperature acquisition.

2. The active barometric calibration device of claim 1, wherein: the number of the clamping blocks (2) is six, the clamping blocks are distributed on the top of the body (1) in a surrounding mode, and the clamping blocks (2) are in a tooth-shaped annular shape.

3. The active barometric calibration device of claim 1, wherein: four corners of the clamping groove (5) are rounded and chamfered, and the clamping groove (5) is matched with the clamping block (2).

4. The active barometric calibration device of claim 1, wherein: the observation window (6) is made of toughened glass materials, and the observation window (6) is circular.

5. The active barometric calibration device of claim 1, wherein: the body (1) is cylindrical, and the sealing ring (4) is made of rubber materials.

6. The active barometric calibration device of claim 1, wherein: the multi-stage equalization system comprises a controller, wherein the input end of the controller is electrically connected with the output end of a battery pack, the input end of the battery pack is electrically connected with a 1 st-stage equalization module and a 2 nd-stage equalization module, the input end of the 2 nd-stage equalization module is electrically connected with a switch tube (IGBT) control network, and the input end of the switch tube (IGBT) control network is electrically connected with the output end of the battery pack.