CN214477559U

CN214477559U - Test system

Info

Publication number: CN214477559U
Application number: CN202120403512.8U
Authority: CN
Inventors: 不公告发明人
Original assignee: Wuxi Lead Intelligent Equipment Co Ltd
Current assignee: Jiangsu hydrogen guide intelligent equipment Co.,Ltd.
Priority date: 2021-02-23
Filing date: 2021-02-23
Publication date: 2021-10-22
Anticipated expiration: 2031-02-23

Abstract

The utility model relates to a test system, including environment storehouse, feed liquor pipe, drain pipe, cooling module and inner loop subassembly. Through setting up foretell test system, when carrying out the cold start test of low temperature, adjust down the temperature in the environment storehouse to predetermined temperature earlier, then adjust the off-state with the inner loop subassembly, the temperature regulating medium flow path is feed liquor pipe, pile, drain pipe and cooling module, and cooling module can cool off the temperature regulating medium, and the temperature of until the temperature regulating medium reduces to predetermined temperature. The external environment of the galvanic pile is at the preset temperature, the internal temperature can be reduced to the preset temperature through the flowing of the temperature regulating medium, the environmental chamber and the temperature regulating medium act simultaneously, and the precooling time of the galvanic pile is effectively shortened.

Description

Test system

Technical Field

The utility model relates to a fuel cell test equipment technical field especially relates to a test system.

Background

The low-temperature cold start is an important detection item of the fuel cell automobile, and the low-temperature cold start capability of the fuel cell automobile can be detected by performing low-temperature cold start on the electric pile. At present, when a low-temperature cold start test is carried out on a galvanic pile, the galvanic pile needs to be pre-cooled firstly so as to reduce the temperature of the galvanic pile to the low temperature required by the test, but the pre-cooling of the galvanic pile takes a long time in the existing test.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a test system capable of effectively shortening the pre-cooling time of the stack, aiming at the problem that the pre-cooling time of the existing stack low-temperature cold start test is long.

A test system, comprising:

the environment bin is provided with a test cavity for accommodating the galvanic pile, and the temperature in the test cavity is adjustable;

the liquid outlet end of the liquid inlet pipe is communicated with the liquid inlet end of the galvanic pile;

the liquid inlet end of the liquid outlet pipe is communicated with the liquid outlet end of the galvanic pile;

the liquid inlet end of the cooling component is communicated with the liquid outlet end of the liquid outlet pipe, the liquid outlet end of the cooling component is communicated with the liquid inlet end of the liquid inlet pipe, and the cooling component is used for cooling the temperature regulating medium flowing through the cooling component; and

the inner circulation assembly is arranged in the test cavity, a liquid inlet end of the inner circulation assembly is communicated with a liquid outlet end of the liquid outlet pipe, and a liquid outlet end of the inner circulation assembly is communicated with a liquid inlet end of the liquid inlet pipe;

the cooling assembly and the internal circulation assembly are both provided with a conduction state for communicating the liquid inlet pipe and the liquid outlet pipe and a stop state for disconnecting the liquid inlet pipe and the liquid outlet pipe.

Through setting up foretell test system, when carrying out the cold start test of low temperature, adjust down the temperature in the environment storehouse to predetermined temperature earlier, then adjust the off-state with the inner loop subassembly, the temperature regulating medium flow path is feed liquor pipe, pile, drain pipe and cooling module, and cooling module can cool off the temperature regulating medium, and the temperature of until the temperature regulating medium reduces to predetermined temperature. The external environment of the galvanic pile is at the preset temperature, the internal temperature can be reduced to the preset temperature through the flowing of the temperature regulating medium, the environmental chamber and the temperature regulating medium act simultaneously, and the precooling time of the galvanic pile is effectively shortened.

After the precooling is completed, the cooling assembly is adjusted to be in a cut-off state, the internal circulation assembly is adjusted to be in a conducting state, the galvanic pile is started, the flow path of the temperature adjusting medium at the moment is the liquid inlet pipe, the galvanic pile, the liquid outlet pipe and the internal circulation assembly, the temperature of the temperature adjusting medium is a preset temperature, the internal circulation assembly is located in the environment bin, the temperature adjusting medium can adjust the temperature inside the galvanic pile, and therefore the temperature of the galvanic pile can be reduced after the low-temperature cold start of the galvanic pile.

In one embodiment, the cooling assembly comprises a cooling pipe, a cooler and a first cooling valve, wherein a liquid inlet end of the cooling pipe is communicated with a liquid outlet end of the liquid outlet pipe, a liquid outlet end of the cooling pipe is communicated with a liquid inlet end of the liquid inlet pipe, the cooler is arranged on the cooling pipe and used for cooling the temperature regulating medium flowing through the cooling pipe, and the first cooling valve is arranged on the cooling pipe and used for switching on or off the cooling pipe.

In one embodiment, the test system further comprises a temperature adjusting mechanism, a liquid inlet end of the temperature adjusting mechanism is communicated with a liquid outlet end of the liquid outlet pipe, a liquid outlet end of the temperature adjusting mechanism is communicated with a liquid inlet end of the liquid inlet pipe, the temperature adjusting mechanism is used for adjusting the temperature of the temperature adjusting medium, and the temperature adjusting mechanism has a conducting state for communicating the liquid inlet pipe with the liquid outlet pipe and a stopping state for disconnecting the liquid inlet pipe with the liquid outlet pipe.

In one embodiment, the temperature adjusting mechanism comprises a temperature adjusting pipe, a temperature adjuster and a temperature adjusting valve, wherein a liquid inlet end of the temperature adjusting pipe is communicated with a liquid outlet end of the liquid outlet pipe, a liquid outlet end of the temperature adjusting pipe is communicated with a liquid inlet end of the liquid inlet pipe, the temperature adjuster is arranged on the temperature adjusting pipe and used for adjusting the temperature of the temperature adjusting medium flowing through the temperature adjusting pipe, and the temperature adjusting valve is arranged on the temperature adjusting pipe and used for switching on or off the temperature adjusting pipe.

In one of them embodiment, test system still includes coupling assembling, coupling assembling's feed liquor end with the play liquid end intercommunication of drain pipe, coupling assembling's play liquid end with the feed liquor end intercommunication of feed liquor pipe, just coupling assembling's feed liquor end is located cooling module's feed liquor end and the feed liquor end of inner loop subassembly is close to one side of pile, coupling assembling's play liquid end is located cooling module's play liquid end and the play liquid end of inner loop subassembly is close to one side of pile, coupling assembling has the intercommunication the feed liquor pipe with the on-state and the disconnection of drain pipe the feed liquor pipe with the off-state of drain pipe.

In one embodiment, the test system further includes a detection assembly and a flow regulating valve, the detection assembly is used for detecting the temperature inside the liquid inlet pipe and the liquid outlet pipe, the flow regulating valve is disposed in the liquid inlet pipe and connected to the detection assembly, and the flow regulating valve is used for regulating the flow of the temperature regulating medium in the liquid inlet pipe.

In one embodiment, the detection assembly comprises a first temperature detector and a second temperature detector, the first temperature detector is arranged in the liquid inlet pipe and used for detecting the temperature inside the liquid inlet pipe, and the second temperature detector is arranged in the liquid outlet pipe and used for detecting the temperature inside the liquid outlet pipe.

In one embodiment, the test system further comprises an intermediate assembly and a liquid adding assembly, wherein a liquid inlet end of the intermediate assembly is communicated with a liquid outlet end of the liquid outlet pipe, liquid inlet ends of the cooling assembly and the internal circulation assembly are both communicated with a liquid outlet end of the intermediate assembly, the intermediate assembly comprises a conducting state for communicating the liquid outlet pipe with the cooling assembly or the internal circulation assembly, and a stopping state for disconnecting the liquid outlet pipe from the cooling assembly or the internal circulation assembly;

the feed liquor end of liquid feeding subassembly with the play liquid end intercommunication of drain pipe, the play liquid end of liquid feeding subassembly with the cooling module reaches the feed liquor end intercommunication of inner loop subassembly, be used for toward the cooling module reaches the inner loop subassembly input the medium that adjusts the temperature, the liquid feeding subassembly is including the intercommunication the drain pipe with the cooling module with the on-state of inner loop subassembly, and the disconnection the drain pipe with the cooling module with the off-state of inner loop subassembly.

In one of them embodiment, the liquid feeding subassembly includes liquid reserve tank, back flow, backwash valve and liquid feeding pipe, the liquid reserve tank is used for storing the medium that adjusts the temperature, the feed liquor end of back flow with the play liquid end intercommunication of drain pipe, the play liquid end of back flow with the liquid reserve tank intercommunication, the backwash valve set up in the back flow is used for switching on or breaking off the back flow, the feed liquor end of liquid feeding pipe with the liquid reserve tank intercommunication, the play liquid end of liquid feeding pipe with cooling module reaches the feed liquor end intercommunication of inner loop subassembly.

In one embodiment, the test system further comprises a circulating pump, and the circulating pump is used for guiding the temperature regulating medium to flow through the liquid inlet pipe, the galvanic pile, the liquid outlet pipe and the cooling assembly or the internal circulation assembly in sequence.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic diagram of a testing system according to an embodiment of the present invention.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" 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 defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

As shown in fig. 1, a testing system 100 according to an embodiment of the present invention includes an environmental chamber 10, a liquid inlet pipe 11, a liquid outlet pipe 12, a cooling assembly 13, and an internal circulation assembly 14.

The environmental chamber 10 has a test chamber 101 for accommodating the stack 200, and the temperature in the test chamber 101 is adjustable.

The liquid outlet end of the liquid inlet pipe 11 is communicated with the liquid inlet end of the galvanic pile 200, and the liquid inlet end of the liquid outlet pipe 12 is communicated with the liquid outlet end of the galvanic pile 200.

The liquid inlet end of the cooling assembly 13 is communicated with the liquid outlet end of the liquid outlet pipe 12, the liquid outlet end of the cooling assembly 13 is communicated with the liquid inlet end of the liquid inlet pipe 11, and the cooling assembly 13 is used for cooling the temperature regulating medium flowing through the cooling assembly 13.

The internal circulation component 14 is arranged in the test cavity 101, a liquid inlet end of the internal circulation component 14 is communicated with a liquid outlet end of the liquid outlet pipe 12, and a liquid outlet end of the internal circulation component 14 is communicated with a liquid inlet end of the liquid inlet pipe 11.

The cooling module 13 and the internal circulation module 14 are both in a conduction state of connecting the liquid inlet pipe 11 and the liquid outlet pipe 12 and in a stop state of disconnecting the liquid inlet pipe 11 and the liquid outlet pipe 12.

By the arrangement of the test system, when a low-temperature cold start test is carried out, the temperature in the environment bin 10 is firstly reduced to a preset temperature, then the internal circulation component 14 is adjusted to be in a cut-off state, the temperature adjusting medium flow path comprises the liquid inlet pipe 11, the electric pile 200, the liquid outlet pipe 12 and the cooling component 13, and the cooling component 13 can cool the temperature adjusting medium until the temperature of the temperature adjusting medium is reduced to the preset temperature. Thus, the external environment of the stack 200 is at the preset temperature, the internal temperature can be reduced to the preset temperature through the flow of the temperature adjusting medium, and the environment bin 10 and the temperature adjusting medium act simultaneously, so that the precooling time of the stack 200 is effectively shortened.

After the pre-cooling is completed, the cooling assembly 13 is adjusted to be in a cut-off state, the internal circulation assembly 14 is adjusted to be in a conducting state, the electric pile 200 is started, the flow path of the temperature adjusting medium at this time is the liquid inlet pipe 11, the electric pile 200, the liquid outlet pipe 12 and the internal circulation assembly 14, the temperature of the temperature adjusting medium is a preset temperature, the internal circulation assembly 14 is located in the environment bin 10, and the temperature adjusting medium can adjust the temperature inside the electric pile 200, so that the electric pile 200 can be cooled after the electric pile 200 is cold started at a low temperature.

That is to say, after the stack 200 is started, the temperature adjusting medium is the coolant in practical use, the temperature of the coolant is the preset temperature, the temperature of the internal temperature and the temperature of the external environment are reduced to the lower temperature, and the working scene of the stack in the low-temperature environment can be fully simulated, that is, the environment of the low-temperature cold start of the fuel cell vehicle is further simulated truly, so that the accuracy of the test result is ensured.

It should be noted that only one of the cooling assembly 13 and the internal circulation assembly 14 is in the on state during the pre-cooling process or during the start-up process of the stack 200 (after the pre-cooling process is completed). Meanwhile, the temperature regulating medium is antifreeze, and when the temperature is started at low temperature, the preset temperature is forty degrees below zero.

In addition, the temperature of the environmental chamber 10 can be adjusted by installing a refrigerator or the like in the environmental chamber 10.

In some embodiments, the testing system further comprises an intermediate assembly 15, the liquid inlet end of the intermediate assembly 15 is communicated with the liquid outlet end of the liquid outlet pipe 12, the liquid inlet ends of the cooling assembly 13 and the internal circulation assembly 14 are communicated with the liquid outlet end of the intermediate assembly 15, and the intermediate assembly 15 comprises a conducting state for communicating the liquid outlet pipe 12 with the cooling assembly 13 or the internal circulation assembly 14, and a stopping state for disconnecting the liquid outlet pipe 12 from the cooling assembly 13 or the internal circulation assembly 14.

It should be noted that, during the pre-cooling process of the stack 200 and after the pre-cooling process is completed, the flow paths of the temperature regulating medium are different, so that the temperature regulating medium flowing out of the liquid outlet pipe 12 passes through the intermediate assembly 15, and at this time, the temperature regulating medium is input into the cooling assembly 13 or the internal circulation assembly 14 according to the states of the cooling assembly 13 and the internal circulation assembly 14.

Further, the intermediate assembly 15 includes an intermediate pipe 151 and an intermediate valve 152, a liquid inlet end of the intermediate pipe 151 is communicated with a liquid outlet end of the liquid outlet pipe 12, a liquid outlet end of the intermediate pipe 151 is communicated with liquid inlet ends of the cooling assembly 13 and the internal circulation assembly 14, and the intermediate valve 152 is disposed on the intermediate pipe 151 and is used for connecting or disconnecting the intermediate pipe 151, so as to connect or disconnect the liquid outlet pipe 12 and the cooling assembly 13 and the internal circulation assembly 14.

In some embodiments, the testing system further comprises a liquid feeding assembly 16, wherein a liquid inlet end of the liquid feeding assembly 16 is communicated with a liquid outlet end of the liquid outlet end, and a liquid outlet end of the liquid feeding assembly 16 is communicated with liquid inlet ends of the cooling assembly 13 and the internal circulation assembly 14, and is used for inputting temperature regulating media into the cooling assembly 13 and the internal circulation assembly 14.

Therefore, before precooling, the temperature regulating medium can be fed into the cooling assembly 13 and the internal circulation assembly 14 through the liquid feeding assembly 16 until the intermediate assembly 15, the cooling assembly 13, the internal circulation assembly 14, the liquid inlet pipe 11, the liquid outlet pipe 12 and the electric pile 200 are filled with the temperature regulating medium.

Further, liquid feeding assembly 16 comprises a conducting state for connecting liquid outlet pipe 12 with cooling assembly 13 and internal circulation assembly 14, and a stopping state for disconnecting liquid outlet pipe 12 with cooling assembly 13 and internal circulation assembly 14.

It should be explained that the liquid feeding assembly 16 feeds the temperature regulating medium to the cooling assembly 13 and the internal circulation assembly 14 before precooling, and the cooling assembly 13 and the internal circulation assembly 14 are both in a conducting state when the temperature regulating medium is fed.

The liquid outlet end of the liquid adding assembly 16 outputs a temperature regulating medium, the temperature regulating medium is operated for a period of time after the liquid inlet end of the liquid adding assembly 16 receives the temperature regulating medium, then the intermediate assembly 15 is switched to a conducting state and operated for a period of time, so that the intermediate assembly 15, the cooling assembly 13, the internal circulation assembly 14, the liquid inlet pipe 11, the liquid outlet pipe 12 and the electric pile 200 are all fully filled with the temperature regulating medium, and then the liquid adding assembly 16 is switched to a cut-off state. Next to the pre-cooling process or after the pre-cooling process is completed, the temperature regulating medium will circulate among the liquid inlet pipe 11, the electric pile 200, the liquid outlet pipe 12, the intermediate assembly 15 and the cooling assembly 13 or the internal circulation assembly 14.

In some embodiments, the liquid feeding assembly 16 includes a liquid storage tank 161, a return pipe 1621, a return valve 1622, and a liquid feeding pipe 163, where the liquid storage tank 161 is used for storing a temperature adjusting medium, a liquid inlet end of the return pipe 1621 is communicated with a liquid outlet end of the liquid outlet pipe 12, a liquid outlet end of the return pipe 1621 is communicated with the liquid storage tank 161, the return valve 1622 is disposed on the return pipe 1621 and is used for connecting or disconnecting the return pipe 1621 to connect or disconnect the liquid outlet pipe 12 and the liquid storage tank 161, a liquid inlet end of the liquid feeding pipe 163 is communicated with the liquid storage tank 161, and a liquid outlet end of the liquid feeding pipe 163 is communicated with liquid inlet ends of the cooling assembly 13 and the internal circulation assembly 14.

Further, the liquid adding assembly 16 further comprises a pressurizing assembly, and the pressurizing assembly is communicated with the liquid storage tank 161 and is used for inputting gas into the liquid storage tank 161 so as to press the temperature regulating medium in the liquid storage tank 161 into the liquid adding pipe 163. The gas to be fed may be an inert gas or nitrogen gas as long as it does not react with the temperature control medium.

In practical application, the pressure boost subassembly includes intake pipe 1641, admission valve 1642, outlet duct 1643 and relief valve 1644, intake pipe 1641 and outlet duct 1643 all communicate with the top of liquid reserve tank 161, admission valve 1642 sets up in intake pipe 1641, relief valve 1644 sets up in outlet duct 1643, intake pipe 1641 is used for communicating with gas supply unit, input gas in the liquid reserve tank 161 past, outlet duct 1643 and relief valve 1644 then discharge some gas when the internal pressure of liquid reserve tank 161 is too high, in order to carry out the pressure relief.

Specifically, the pressure boost assembly further includes a vent valve 1645, the gas outlet tube 1643 includes two branches, the relief valve 1644 is disposed on one branch, the vent valve 1645 is disposed on the other branch, the vent valve 1645 is used to open or close the corresponding branch, and when the corresponding branch is opened, the vent valve 1645 may be used to discharge the gas in the liquid storage tank 161.

In some embodiments, the liquid feeding assembly 16 further includes a liquid feeding pipe 1651, a liquid feeding valve 1652, and a one-way valve 1653, where the liquid feeding pipe 1651 and the return pipe 1621 are both communicated with the top of the liquid storage tank 161, the liquid feeding pipe 163 is communicated with the bottom of the liquid storage tank 161, and the liquid feeding valve 1652 and the one-way valve 1653 are both disposed on the liquid feeding pipe 1651 to cooperate with the liquid feeding pipe 1651 to input the temperature regulating medium into the liquid storage tank 161.

Further, the liquid adding assembly 16 further comprises a plurality of liquid level detectors 166, the plurality of liquid level detectors 166 are disposed in the liquid storage tank 161 for detecting the liquid level height of the temperature regulating medium in the liquid storage tank 161, and an operator can open or close the liquid adding valve 1652 according to the liquid level height detected by the liquid level detectors 166 to add liquid to the liquid storage tank 161.

In practical application, liquid feeding subassembly 16 still includes fluid-discharge tube 1671 and flowing back valve 1672, and fluid-discharge tube 1671 is connected in the bottom of liquid reserve tank 161, and flowing back valve 1672 sets up in fluid-discharge tube 1671 for the temperature-regulating medium in the discharge liquid reserve tank 161 of mutually supporting. Simultaneously, fluid-discharge tube 1671 and feed liquor pipe 11 mutually support, can change the temperature regulating medium in liquid reserve tank 161 and other pipelines.

In some embodiments, the liquid feeding assembly 16 further comprises a conductivity detector 1681 and a pressure detector 1682, wherein the conductivity detector 1681 and the pressure detector 1682 are disposed in the liquid storage tank 161, the conductivity detector 1681 is configured to detect a conductivity of the temperature regulating medium in the liquid storage tank 161, and the pressure detector 1682 is configured to detect a pressure in the liquid storage tank 161.

In some embodiments, the testing system further includes a connection assembly 17, a liquid inlet end of the connection assembly 17 is communicated with a liquid outlet end of the liquid outlet pipe 12, a liquid outlet end of the connection assembly 17 is communicated with a liquid inlet end of the liquid inlet pipe 11, the liquid inlet end of the connection assembly 17 is located at a liquid inlet end of the cooling assembly 13 and a side of the liquid inlet end of the internal circulation assembly 14 close to the electric pile 200, the liquid outlet end of the connection assembly 17 is located at a side of the liquid outlet end of the cooling assembly 13 and a side of the liquid outlet end of the internal circulation assembly 14 close to the electric pile 200, and the connection assembly 17 has a conducting state of communicating the liquid inlet pipe 11 with the liquid outlet pipe 12 and a blocking state of disconnecting the liquid inlet pipe 11 from the liquid outlet pipe 12.

It should be noted that, compared to the internal circulation module 14, the connection module 17 is directly connected to the liquid inlet end of the liquid inlet pipe 11 and the liquid outlet end of the liquid outlet pipe 12, and the internal circulation module 14 is connected to the intermediate module 15 and the liquid outlet end of the liquid feeding module 16.

Meanwhile, as shown in fig. 1, the connection assembly 17 is closest to the cell stack 200 in the mechanism for communicating the liquid inlet pipe 11 and the liquid outlet pipe 12, so as to ensure that the temperature regulating medium flowing out of the liquid outlet pipe 12 flows into the liquid inlet pipe 11 as soon as possible when the connection assembly 17 is in a conducting state.

In addition, after the galvanic pile 200 starts, the temperature in the liquid outlet pipe 12 is higher than the temperature in the liquid inlet pipe 11, in order to balance the temperatures in the liquid inlet pipe 11 and the liquid outlet pipe 12, the temperature difference between the liquid inlet pipe 11 and the liquid outlet pipe 12 is prevented from being too large, and an operator can set the connecting assembly 17 to be in a conducting state in advance, so that the liquid inlet end of the liquid inlet pipe 11 is directly communicated with the liquid outlet end of the liquid outlet pipe 12.

Further, the connection assembly 17 includes a connection pipe 171 and a connection valve 172, a liquid inlet end of the connection pipe 171 is communicated with a liquid outlet end of the liquid outlet pipe 12, a liquid outlet end of the connection pipe 171 is communicated with a liquid inlet end of the liquid inlet pipe 11, and the connection valve 172 is disposed on the connection pipe 171 and is used for connecting or disconnecting the connection pipe 171.

In some embodiments, the testing system further includes a detection assembly 18, the detection assembly 18 being configured to detect the temperature of the interior of the inlet pipe 11 and the outlet pipe 12.

Further, the detecting assembly 18 includes a first temperature detector 181 and a second temperature detector 183, the first temperature detector 181 is disposed on the liquid inlet pipe 11 for detecting the temperature inside the liquid inlet pipe 11, and the second temperature detector 183 is disposed on the liquid outlet pipe 12 for detecting the temperature inside the liquid outlet pipe 12.

In some embodiments, the testing system further comprises a liquid inlet valve 19 and a liquid outlet valve 20, wherein the liquid inlet valve 19 is disposed on the liquid inlet pipe 11, and the liquid outlet valve 20 is disposed on the liquid outlet pipe 12 to respectively connect and disconnect the liquid inlet pipe 11 and the liquid outlet pipe 12.

In some embodiments, the testing system further includes a flow regulating valve 21, the flow regulating valve 21 is disposed in the liquid inlet pipe 11 and connected to the detecting assembly 18, and the flow regulating valve 21 is used for regulating the flow of the temperature regulating medium in the liquid inlet pipe 11.

Further, the test system further comprises a flow detector 22, the flow detector 22 is disposed in the liquid outlet pipe 12 and is used for detecting the flow of the temperature adjusting medium in the liquid outlet pipe 12, and the flow adjusting valve 21 is connected to the detecting assembly 18 and the flow detector 22.

After an operator opens the connecting valve 172, the liquid outlet end of the liquid outlet pipe 12 is communicated with the liquid inlet end of the liquid inlet pipe 11 through the connecting pipe 171 to balance the temperature of the temperature adjusting media in the liquid inlet pipe 11 and the liquid outlet pipe 12, and after the subsequent galvanic pile 200 is started, the temperature of the temperature adjusting media rises, and if the temperature of the temperature adjusting media in the liquid inlet pipe 11 and the liquid outlet pipe 12 rises to a certain height, the temperature adjusting media flowing into the galvanic pile 200 needs to be increased to cool the galvanic pile.

Therefore, flow control valve 21 is connected with determine module 18 and flow detector 22 simultaneously, and determine module 18 detects the high temperature, and flow control valve 21 adjusts the flow, and all can detect through flow detector 22 before adjusting and after adjusting to the realization is to the accurate regulation of feed liquor pipe 11 flow.

In some embodiments, the internal circulation assembly 14 includes a circulation pipe 141 and a circulation valve 142, wherein the liquid inlet end of the circulation pipe 141 is connected to the liquid outlet end of the liquid outlet pipe 12, the liquid outlet end of the circulation pipe 141 is connected to the liquid inlet end of the liquid inlet pipe 11, and the circulation valve 142 is disposed on the circulation pipe 141 for connecting or disconnecting the circulation pipe 141, thereby connecting or disconnecting the liquid inlet pipe 11 and the liquid outlet pipe 12.

In some embodiments, the cooling assembly 13 includes a cooling pipe 131, a cooler 132, and a first cooling valve 133, wherein an inlet end of the cooling pipe 131 is communicated with an outlet end of the liquid outlet pipe 12, an outlet end of the cooling pipe 131 is communicated with an inlet end of the liquid inlet pipe 11, the cooler 132 is disposed on the cooling pipe 131 for cooling the temperature regulating medium flowing through the cooling pipe 131, and the first cooling valve 133 is disposed on the cooling pipe 131 for turning on or off the cooling pipe 131 to connect or disconnect the liquid inlet pipe 11 and the liquid outlet pipe 12.

Further, the cooling assembly 13 further includes a second cooling valve 134, and the second cooling valve 134 is disposed on the cooling pipe 131 for turning on or off the cooling pipe 131.

It should be noted that the first cooling valve 133 and the second cooling valve 134 can both turn on or off the cooling pipe 131, and one of the first cooling valve 133 and the second cooling valve 134 can be an automatically adjusting valve, specifically, a valve of a pneumatic switch, and the other can be a valve of a manual adjusting valve, so as to facilitate manual adjustment by an operator, and the valve is adjusted by the operator before the test system is normally operated.

In practical application, the cooler 132 is a plate heat exchanger, the cooling module 13 further includes a first heat exchange tube 135, the plate heat exchanger is connected to the cooling tube 131 and the first heat exchange tube 135, and the heat exchange between the coolant and the temperature adjusting medium is realized by inputting the coolant into the first heat exchange tube 135, so as to cool the temperature adjusting medium.

Specifically, the cooling module 13 further includes a first heat exchange valve 136 and a second heat exchange valve 137, and the first heat exchange valve 136 and the second heat exchange valve 137 are both disposed in the first heat exchange pipe 135 and are both used for turning on or off the first heat exchange pipe 135, so as to open or close the heat exchange between the first heat exchange pipe 135 and the cooling pipe 131.

It should be noted that one of the first and second heat exchanging valves 136 and 137 is also an automatically adjusting valve, and the other is a manually adjusting valve, so as to facilitate manual adjustment by an operator. Similarly, the automatic regulating valve is a valve of a pneumatic switch, and the manual regulating valve is well regulated by an operator before the operation of the test system.

In some embodiments, the testing system further comprises a circulation pump 23, and the circulation pump 23 is used for guiding the temperature regulating medium to flow through the liquid inlet pipe 11, the electric pile 200, the liquid outlet pipe 12 and the cooling assembly 13 or the internal circulation assembly 14 in sequence.

In practical application, the testing system further comprises a communicating pipe 24, a liquid inlet end of the communicating pipe 24 is communicated with a liquid outlet end of the intermediate pipe 151, liquid inlet ends of the cooling pipe 131 and the circulating pipe 141 are both communicated with a liquid outlet end of the communicating pipe 24, and the circulating pump 23 is arranged on the communicating pipe 24.

In some embodiments, a circulation pump 23 is disposed between the effluent pipe 12 and the cooling assembly 13 and the internal circulation assembly 14. In other embodiments, the circulation pump 23 may be disposed between the cooling module 13 and the internal circulation module 14 and the liquid inlet pipe 11, as long as the temperature-adjusting medium can be guided to flow through the liquid inlet pipe 11, the cell stack 200, the liquid outlet pipe 12, and the cooling module 13 or the internal circulation module 14 in sequence.

In some embodiments, the testing system further comprises a temperature adjusting mechanism 25, wherein an inlet end of the temperature adjusting mechanism 25 is communicated with an outlet end of the liquid outlet pipe 12, an outlet end of the temperature adjusting mechanism 25 is communicated with an inlet end of the liquid inlet pipe 11, the temperature adjusting mechanism 25 is used for adjusting the temperature of the temperature adjusting medium, and the temperature adjusting mechanism 25 has a conducting state for communicating the liquid inlet pipe 11 with the liquid outlet pipe 12 and a stopping state for disconnecting the liquid inlet pipe 11 from the liquid outlet pipe 12.

In the precooling process, the internal circulation component 14 and the temperature regulating mechanism 25 are both in the cut-off state, after the stack 200 is started, the internal circulation component 14 is conducted, the cooling component 13 is switched to the cut-off state, the temperature of the stack 200 can be continuously increased, the temperature regulating medium flows through the internal circulation component 14, the temperature reducing effect of the internal circulation component 14 is limited, so that the temperature of the temperature regulating medium can be continuously increased, in order to continuously reduce the temperature of the stack 200, the internal circulation component 14 needs to be switched to the cut-off state, the temperature regulating mechanism 25 is switched to the conducting state, and the temperature regulating medium flowing through the temperature regulating pipe 251 is regulated by the temperature regulator 252 to reduce the temperature of the temperature regulating medium, so that the stack 200 can be continuously reduced in temperature.

That is, after the pre-cooling is started, the cooling unit 13, the internal circulation unit 14, and the temperature control unit 25 are turned on one and only one at a time, and the remaining two are turned off.

In practical application, the liquid inlet end of the temperature adjusting mechanism 25 is communicated with the liquid outlet end of the intermediate assembly 15 and the liquid adding assembly 16, so that when the temperature adjusting medium is input into the liquid adding assembly 16 before precooling, the temperature adjusting mechanism 25, the internal circulation assembly 14 and the cooling assembly 13 need to be adjusted to be in a conducting state, and all pipelines, mechanisms or assemblies are ensured to be filled with the temperature adjusting medium.

In some embodiments, the temperature adjusting mechanism 25 includes a temperature adjusting pipe 251, a temperature adjuster 252 and a temperature adjusting valve 253, wherein an inlet end of the temperature adjusting pipe 251 is communicated with an outlet end of the liquid outlet pipe 12, an outlet end of the temperature adjusting pipe 251 is communicated with an inlet end of the liquid inlet pipe 11, the temperature adjuster 252 is disposed on the temperature adjusting pipe 251 for adjusting the temperature of the temperature adjusting medium flowing through the temperature adjusting pipe 251, and the temperature adjusting valve 253 is disposed on the temperature adjusting pipe 251 for turning on or off the temperature adjusting pipe 251 to connect or disconnect the liquid inlet pipe 11 and the liquid outlet pipe 12.

Further, the temperature adjusting mechanism 25 further includes a fourth temperature detector 254, and the fourth temperature detector 254 is disposed on the temperature adjusting pipe 251 and is located on a side of the temperature adjuster 252 close to the liquid inlet pipe 11, and is used for detecting the temperature of the temperature adjusting medium adjusted by the temperature adjuster 252.

In practical application, the liquid inlet end of the temperature adjusting pipe 251 is communicated with the liquid outlet end of the communicating pipe 24, the temperature adjuster 252 is a plate heat exchanger, the temperature adjusting mechanism 25 further comprises a second heat exchanging pipe 255, the plate heat exchanger is simultaneously connected with the temperature adjusting pipe 251 and the second heat exchanging pipe 255, and cooling water is input into the second heat exchanging pipe 255 to realize heat exchange between the cooling water and a temperature adjusting medium, so that the temperature of the temperature adjusting medium is reduced.

It should be noted that the temperature of the coolant input into the first heat exchange tube 135 is not higher than forty degrees below zero, and the cooling water input into the second heat exchange tube 255 is normal-temperature water, which is used to cool the temperature adjusting medium to normal temperature, and indirectly cool the temperature of the stack 200 to normal temperature, so that the normal-temperature start test of the stack 200 is conveniently continued.

Specifically, the thermostat valve 253 is disposed on a side of the thermostat 252 close to the liquid inlet pipe 11, and the fourth temperature detector 254 is located between the thermostat valve 253 and the thermostat 252. In this way, it is avoided that the temperature control medium flows from the temperature control pipe 251 through the temperature controller 252 and into the liquid inlet pipe 11 during the precooling or the conduction of the internal circulation module 14. Similarly, the first cooling valve 133 in the above embodiment is also disposed on the side of the cooler 132 close to the inlet end.

Further, a second cooling valve 134 is provided on a side of the cooler 132 remote from the first cooling valve 133 for regulating the flow rate of the temperature regulating medium flowing through the cooler 132.

In some embodiments, the intermediate valve 152, the return valve 1622, the circulation valve 142, the first cooling valve 133, the first heat exchanging valve 136, and the temperature adjusting valve 253 are pneumatic valves, the intake valve 1642 and the filling valve 1652 are solenoid valves, the exhaust valve 1645, the drain valve 1672, the intake valve 19, and the drain valve 20 are manually opened and closed valves, and the connection valve 172, the second cooling valve 134, and the second heat exchanging valve 137 are manually adjusted valves. In other embodiments, the valve may be in other forms as long as the valve can be opened and closed.

It should be noted that the pneumatic valve, the electromagnetic valve and the manual switch valve are used for controlling on/off, and the manual regulating valve can control on/off and opening, taking the connection valve 172 as an example, an operator opens the connection valve 172 before precooling or before starting the electric pile, and adjusts the opening of the connection valve 172 according to requirements, so as to avoid that the flow of the temperature regulating medium in the connection pipe 171 is too large due to too large opening on the premise of communicating the liquid inlet end of the liquid inlet pipe 11 with the liquid outlet end of the liquid outlet pipe 12, thereby avoiding influencing the flow regulation of the liquid inlet pipe 11.

In addition, the flow control valve 21 in the above embodiment is an automatic control valve, and in other embodiments, other valves may be set to be automatically controlled for convenience of control, so as to reduce the labor intensity of the operator.

In one embodiment, the return pipe 1621 and the filling pipe 163 of the filling assembly 16 partially extend into the environmental chamber 10, the rest is located outside the environmental chamber 10, the cooling assembly 13 and the temperature adjustment mechanism 25 are located outside the environmental chamber 10, and the connection pipe 24 partially extends out of the environmental chamber 10.

It should be noted that, taking the communication pipe 24 as an example, the communication pipe 24 has three liquid outlet ends, and the end of the communication pipe 24 may have a four-way joint. Other conduits may be similarly configured to communicate with multiple conduits simultaneously.

In order to facilitate understanding of the technical solution of the present invention, the operation process of the test system in the above embodiment is described here:

initially, a sufficient amount of temperature adjusting medium is stored in the liquid storage tank 161, the intermediate valve 152, the exhaust valve 1645 and the liquid discharge valve 1672 are closed, then all valves are opened, nitrogen is input into the liquid storage tank 161, the temperature adjusting medium is pressed into the liquid feeding pipe 163, and finally flows back to the liquid storage tank 161 from the return pipe 1621 through the circulating pump 23, the internal circulating component 14, the cooling component 13, the temperature adjusting mechanism 25, the liquid inlet pipe 11, the cell stack 200, the liquid outlet pipe 12 and the connecting component 17, and after a period of time, the intermediate valve 152 is opened and the operation is continued for a period of time, and the temperature adjusting medium can be filled in the above structure (due to the liquidity of the liquid, the intermediate component 15 can be filled with the temperature adjusting medium).

Then, the temperature of the environmental chamber 10 is adjusted to a preset temperature, the return valve 1622, the circulation valve 142 and the first heat exchange valve 136 are closed, the circulation pump 23 is opened, and meanwhile, the coolant is input into the first heat exchange tube 135, the temperature adjusting medium flows through the liquid inlet tube 11, the electric pile 200, the liquid outlet tube 12, the intermediate tube 151 and the cooling tube 131 in sequence, and the temperature adjusting medium flowing through the cooling tube 131 is cooled by the coolant through the cooler 132, so that the temperature of the temperature adjusting medium is rapidly reduced to the preset temperature.

After the temperature is reduced to the preset temperature, the first cooling valve 133, the second cooling valve 134, the first heat exchange valve 136 and the second heat exchange valve 137 are closed, the circulating valve 142 is opened, and the cell stack 200 is started, wherein the temperature regulating medium flows through the liquid inlet pipe 11, the cell stack 200, the liquid outlet pipe 12, the intermediate pipe 151 and the circulating pipe 141 in sequence.

After the electric pile 200 is started and operated for a period of time, when the second temperature detector 183 detects that the temperature of the temperature adjusting medium in the liquid outlet pipe 12 is too high, the circulating valve 142 is closed, the temperature adjusting valve 253 is opened, and cooling water is input into the second heat exchange pipe 255, at this time, the temperature adjusting medium flows through the liquid inlet pipe 11, the electric pile 200, the liquid outlet pipe 12, the intermediate pipe 151 and the temperature adjusting pipe 251 in sequence, and the cooling water cools the temperature adjusting medium flowing through the temperature adjuster 252 until the temperature of the temperature adjusting medium is reduced to normal temperature.

The temperature of the electric pile 200 and the temperature of the temperature adjusting medium are changed synchronously, when the low-temperature cold start test of the electric pile 200 is finished and the temperature of the temperature adjusting medium is reduced to the normal temperature, the temperature of the electric pile 200 is also reduced to the normal temperature, at the moment, the electric pile 200 can be operated and tested under the normal temperature state, the interval time between the two tests is shortened, and the test efficiency is further improved.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A test system, comprising:

2. The testing system of claim 1, wherein the cooling assembly comprises a cooling tube, a cooler and a first cooling valve, a liquid inlet end of the cooling tube is communicated with a liquid outlet end of the liquid outlet tube, a liquid outlet end of the cooling tube is communicated with a liquid inlet end of the liquid inlet tube, the cooler is disposed on the cooling tube and used for cooling the temperature regulating medium flowing through the cooling tube, and the first cooling valve is disposed on the cooling tube and used for switching on or off the cooling tube.

3. The testing system of claim 1, further comprising a temperature adjusting mechanism, wherein a liquid inlet of the temperature adjusting mechanism is connected to a liquid outlet of the liquid outlet pipe, a liquid outlet of the temperature adjusting mechanism is connected to a liquid inlet of the liquid inlet pipe, the temperature adjusting mechanism is used for adjusting the temperature of the temperature adjusting medium, and the temperature adjusting mechanism has a conducting state for connecting the liquid inlet pipe and the liquid outlet pipe and a blocking state for disconnecting the liquid inlet pipe and the liquid outlet pipe.

4. The testing system of claim 3, wherein the temperature adjustment mechanism comprises a temperature adjustment pipe, a temperature adjuster and a temperature adjustment valve, a liquid inlet end of the temperature adjustment pipe is communicated with a liquid outlet end of the liquid outlet pipe, a liquid outlet end of the temperature adjustment pipe is communicated with a liquid inlet end of the liquid inlet pipe, the temperature adjuster is arranged on the temperature adjustment pipe and used for adjusting the temperature of the temperature adjustment medium flowing through the temperature adjustment pipe, and the temperature adjustment valve is arranged on the temperature adjustment pipe and used for switching on or switching off the temperature adjustment pipe.

5. The testing system of claim 1, further comprising a connecting assembly, wherein a liquid inlet end of the connecting assembly is communicated with a liquid outlet end of the liquid outlet pipe, a liquid outlet end of the connecting assembly is communicated with a liquid inlet end of the liquid inlet pipe, a liquid inlet end of the connecting assembly is located at a side where the liquid inlet end of the cooling assembly and the liquid inlet end of the internal circulation assembly are close to the galvanic pile, a liquid outlet end of the connecting assembly is located at a side where the liquid outlet end of the cooling assembly and the liquid outlet end of the internal circulation assembly are close to the galvanic pile, and the connecting assembly has a conducting state for communicating the liquid inlet pipe with the liquid outlet pipe and a blocking state for disconnecting the liquid inlet pipe from the liquid outlet pipe.

6. The testing system of claim 5, further comprising a detection assembly for detecting the temperature inside the liquid inlet pipe and the liquid outlet pipe, and a flow control valve disposed in the liquid inlet pipe and connected to the detection assembly, wherein the flow control valve is used for adjusting the flow rate of the temperature adjusting medium in the liquid inlet pipe.

7. The testing system of claim 6, wherein the detecting assembly comprises a first temperature detector and a second temperature detector, the first temperature detector is disposed in the liquid inlet pipe and configured to detect a temperature inside the liquid inlet pipe, and the second temperature detector is disposed in the liquid outlet pipe and configured to detect a temperature inside the liquid outlet pipe.

8. The testing system of claim 1, further comprising an intermediate assembly and a liquid feeding assembly, wherein a liquid inlet end of the intermediate assembly is communicated with a liquid outlet end of the liquid outlet pipe, liquid inlet ends of the cooling assembly and the internal circulation assembly are both communicated with a liquid outlet end of the intermediate assembly, the intermediate assembly comprises a conducting state for communicating the liquid outlet pipe with the cooling assembly or the internal circulation assembly, and a stopping state for disconnecting the liquid outlet pipe from the cooling assembly or the internal circulation assembly;

9. The testing system of claim 8, wherein the liquid feeding assembly comprises a liquid storage tank, a return pipe, a return valve and a liquid feeding pipe, the liquid storage tank is used for storing the temperature adjusting medium, a liquid inlet end of the return pipe is communicated with a liquid outlet end of the liquid outlet pipe, a liquid outlet end of the return pipe is communicated with the liquid storage tank, the return valve is arranged on the return pipe and used for conducting or disconnecting the return pipe, a liquid inlet end of the liquid feeding pipe is communicated with the liquid storage tank, and a liquid outlet end of the liquid feeding pipe is communicated with the liquid inlet end of the cooling assembly and the liquid inlet end of the internal circulation assembly.

10. The testing system of claim 1, further comprising a circulation pump for directing the temperature conditioning medium to flow sequentially through the inlet tube, the cell stack, the outlet tube, and the cooling assembly or the internal circulation assembly.