Activation table water tank for galvanic pile test and use method

Abstract

The invention discloses an activation table water tank for galvanic pile testing and a using method, and relates to the field of fuel cells, the activation table water tank for galvanic pile testing comprises a water tank, the water tank is fixedly connected with a fixing frame, the water tank is fixedly connected with a fixing frame, the water tank is fixedly connected with a condenser, and the water tank is fixedly connected with a liquid outlet pipe. The liquid outlet pipe is communicated with the condenser, the water tank is communicated with a return pipe, and the rotary frame is rotatably connected to the fixed frame. Through the arrangement of the rotating frame, the fixed cylinder, the sliding valve, the piston valve frame and other parts, the condenser can automatically and dynamically adjust the flow speed and the outflow amount of the cooling liquid according to the temperature of the fuel cell, so that the cooling effect can be controlled according to the actual heat dissipation requirement of the cell, excessive cooling or insufficient cooling is avoided, and the service life of the fuel cell is prolonged. Therefore, the overall energy utilization efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the field of fuel cells, and in particular to an activation table water tank for fuel cell stack testing and a use method thereof. Background Art

[0002] The stack test is a series of testing processes for the performance evaluation of fuel cell stacks. Its main purpose is to ensure the performance, reliability and durability of the stack in actual applications. Stack activation is an important part of the fuel cell stack test. Its purpose is to activate the catalyst layer inside the stack through a series of electrochemical reactions so that it reaches the optimal working state, and at the same time detect whether the performance indicators of the stack meet the design requirements. The fuel cell stack will generate heat during the activation and operation process, and an effective cooling system is required to maintain a suitable operating temperature. The activation table water tank may be a component of the cooling system, which absorbs the heat generated by the stack through circulating water, ensuring that the stack is activated at a constant and suitable temperature for testing, thereby improving the activation efficiency and test accuracy.

[0003] Fuel cells will generate different temperatures under different working conditions, and therefore have different actual heat dissipation requirements. The current cooling system generally provides a circulating coolant with a fixed temperature, which cannot control the cooling effect according to the actual heat dissipation requirements of the fuel cell. It is easy to over-cool or under-cool, which not only damages the fuel cell, but also reduces the overall energy efficiency. Summary of the invention

[0004] In order to overcome the shortcoming that the cooling effect cannot be controlled according to the actual heat dissipation demand of the fuel cell, the present invention provides an activation table water tank for a fuel cell test and a use method thereof.

[0005] The water tank of an activation table for testing a battery stack comprises a water tank, the water tank is fixedly connected to a fixed frame, the water tank is fixedly connected to a fixed frame, the water tank is fixedly connected to a condenser, the water tank is fixedly connected to a liquid outlet pipe, the liquid outlet pipe is communicated with the condenser, the water tank is communicated with a reflux pipe, and also comprises a rotating frame, the rotating frame is rotatably connected to the fixed frame, the rotating frame is provided with a guide groove, the reflux pipe is communicated with a fixed cylinder for storing a thermal expansion agent, the fixed cylinder is slidably connected with a push rod, the push rod is slidably connected to the fixed frame, a sliding valve is slidably connected to a side of the push rod away from the fixed cylinder, the sliding valve is provided with an acceleration valve groove, the sliding valve is slidably connected to the liquid outlet pipe, a first spring is fixedly connected between the sliding valve and the push rod, the sliding valve is slidably connected to a sliding frame for limiting the sliding valve, the sliding frame cooperates with the guide groove for limiting, and the water tank is provided with a control component for controlling the opening and closing of the sliding valve.

[0006] In a preferred embodiment of the present invention, the diameter of one side of the accelerating valve slot of the sliding valve is larger than the diameter of the other side of the accelerating valve slot, so as to accelerate the outflow of the liquid.

[0007] In a preferred embodiment of the present invention, the path of the guide groove is configured to be smooth first and then tortuous.

[0008] In a preferred embodiment of the present invention, an activation table water tank for battery stack testing also includes a piston valve frame, the piston valve frame is vertically slidably connected to the return pipe, the piston valve frame is provided with a guide groove, the guide groove of the piston valve frame is inclined toward the outlet of the return pipe, a second spring is fixedly connected between the piston valve frame and the return pipe, the piston valve frame is movably connected to the rotating frame, an electromagnet is fixedly connected to the water tank, the switch of the condensing machine is electrically connected to the electromagnet through a control module, and when power is turned on, the electromagnet and the piston valve frame are magnetically matched.

[0009] In a preferred embodiment of the present invention, an activation table water tank for battery stack testing further includes a plurality of fixing rods, wherein the fixing rods are fixedly connected in the water tank, and floating plates are slidably connected between the fixing rods.

[0010] In a preferred embodiment of the present invention, an activation table water tank for battery stack testing also includes a first magnet, the first magnet is fixed between any two adjacent fixing rods, and the floating plate is fixed with a baffle that magnetically cooperates with the first magnet.

[0011] In a preferred embodiment of the present invention, an activation table water tank for battery stack testing also includes a filter screen, which is placed in the liquid inlet pipe of the condenser. A second magnet is fixedly connected to the liquid inlet pipe of the condenser, and the second magnet is magnetically matched with the filter screen.

[0012] In a preferred embodiment of the present invention, an activation table water tank for battery stack testing also includes two flow meters, the two flow meters are respectively fixed to the liquid outlet pipe and the return pipe, and the two flow meters face the same direction.

[0013] In a preferred embodiment of the present invention, an activation table water tank for battery stack testing further includes an observation plate, and the observation plate is fixedly connected to the water tank.

[0014] A method for using an activation table water tank for a battery stack test comprises the following steps:

[0015] S1: First, the liquid outlet pipe and the return pipe are connected to the inlet and outlet of the cooling channel built into the fuel cell respectively, and a sufficient amount of coolant is placed in the right part of the water tank;

[0016] S2: When cooling the fuel cell, the condenser is started, and the liquid outlet pipe and the return pipe are respectively in a partially open state and a fully open state;

[0017] S3: Affected by the temperature, the sliding valve of the liquid outlet pipe automatically adjusts the size of the acceleration valve slot;

[0018] S4: When cooling is completed, the condenser is automatically turned off.

[0019] The beneficial effects of the present invention are:

[0020] The present invention arranges components such as a rotating frame, a fixed cylinder, a sliding valve, and a piston valve frame, so that the condenser can automatically and dynamically adjust the flow rate and outflow of the coolant according to the temperature of the fuel cell, thereby being able to control the cooling effect according to the actual heat dissipation requirements of the battery, avoiding overcooling or insufficient cooling, and thus improving the overall energy utilization efficiency.

[0021] The present invention can effectively extend the service life of the fuel cell by automatically adjusting to keep the fuel cell within the optimal operating temperature range, reduce the damage of thermal stress to the internal structure of the fuel cell, and help maintain the stability of the fuel cell output power. It only provides sufficient cooling when necessary and avoids unnecessary energy consumption, which is in line with the environmental protection concept of energy conservation and emission reduction.

[0022] The present invention utilizes the continuous impact force of the coolant in the return pipe to keep the piston valve rack in the position after sliding downward, so that the return pipe is continuously opened to realize the circulation treatment of the coolant.

[0023] The present invention utilizes the gradual reduction of the reflux amount of the coolant to cause the sliding valve to automatically close the liquid outlet pipe, automatically and timely prevent the coolant in the water tank from continuously entering the cooling channel of the fuel cell, thereby stopping the supply of the coolant, avoiding long-term continuous leakage of the coolant, and reducing the negative impact of the coolant leakage of the fuel cell.

[0024] The present invention blocks the liquid inlet of the condenser by a baffle when dripping occurs and causes the liquid level in the water tank to drop, thereby stopping the liquid discharge and promptly dealing with the dripping phenomenon. The flow rate changes in the liquid outlet pipe and the return pipe can be timely observed through a flow meter, and the liquid level changes in the tank can also be timely observed through an observation plate, thereby facilitating timely detection of coolant leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0026] Figure 2 It is a three-dimensional structural cross-sectional view of the present invention.

[0027] Figure 3 It is a three-dimensional structural schematic diagram of the fixing frame, condenser, liquid outlet pipe and other components of the present invention.

[0028] Figure 4 It is a three-dimensional structural schematic diagram of components such as the reflux pipe and the rotating frame of the present invention.

[0029] Figure 5 It is a schematic diagram of the three-dimensional structure of the rotating frame of the present invention.

[0030] Figure 6 It is a three-dimensional structural schematic diagram of the fixed cylinder, push rod, sliding valve and other components of the present invention.

[0031] Figure 7 It is a three-dimensional structural schematic diagram of the components such as the electromagnet, the piston valve frame and the second spring of the present invention.

[0032] Figure 8 It is a three-dimensional structural schematic diagram of the return pipe, piston valve frame, second spring and other components of the present invention.

[0033] Fig. 9 It is a three-dimensional structural schematic diagram of the fixing rod, the floating plate, the first magnet and other components of the present invention.

[0034] Fig.10 It is a schematic diagram of the three-dimensional structure of the filter screen, the second magnet and other components of the present invention.

[0035] Fig.11 It is a three-dimensional structural schematic diagram of components such as the liquid outlet pipe, the reflux pipe and the flow meter of the present invention.

[0036] In the figure: 101: water tank, 102: fixed frame, 103: fixed frame, 104: condenser, 105: liquid outlet pipe, 106: reflux pipe, 107: rotating frame, 1071: guide groove, 108: fixed cylinder, 109: push rod, 110: sliding valve, 111: first spring, 112: sliding frame, 201: piston valve frame, 202: second spring, 203: electromagnet, 301: fixed rod, 302: floating plate, 303: first magnet, 304: baffle, 401: filter screen, 402: second magnet, 501: flow meter, 601: observation plate. DETAILED DESCRIPTION

[0037] The present invention is further described below in conjunction with specific embodiments. It should also be noted that, unless otherwise clearly specified and limited, terms such as: setting, installing, connecting, and connecting should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] Embodiment 1: An activation table water tank for battery stack testing, combined with the attached Figure 1 To Attachment Figure 6, including a water tank 101, a fixed frame 102 is fixedly connected to the left part of the water tank 101, a fixed frame 103 is fixedly connected to the left part of the water tank 101, the fixed frame 103 is located in the fixed frame 102, a condenser 104 is fixedly connected to the left side of the water tank 101, the right side of the water tank 101 is used to store coolant, a liquid outlet pipe 105 is fixedly connected to the front part of the left side of the water tank 101, the liquid outlet pipe 105 is connected to the condenser 104, the right rear side of the water tank 101 is connected to a return pipe 106, the left part of the fixed frame 103 is rotatably connected to a rotating frame 107, the front side of the rotating frame 107 is provided with a guide groove 1071, the path of the guide groove 1071 is set to be smooth first and then tortuous, and the return pipe 106 is connected to A fixed cylinder 108 for storing ethyl acetate is slidably connected to the fixed cylinder 108 along the front-to-back direction with a push rod 109, the push rod 109 is slidably connected to the fixed frame 103, the front side of the push rod 109 is slidably connected to a sliding valve 110 along the front-to-back direction, the sliding valve 110 is provided with an accelerating valve groove, the caliber of the right side of the accelerating valve groove of the sliding valve 110 is larger than the caliber of the left side of the accelerating valve groove, which is used to accelerate the outflow of liquid, the sliding valve 110 is slidably connected to the liquid outlet pipe 105, a first spring 111 is fixedly connected between the sliding valve 110 and the push rod 109, the sliding valve 110 is slidably connected to a sliding frame 112 for limiting the sliding valve 110 along the front-to-back direction, and the sliding frame 112 cooperates with the guide groove 1071 for limiting the position.

[0039] Combined with Figure 7 To Attachment Figure 8 , and also includes a piston valve frame 201, which is slidably connected to the return pipe 106 along the up and down directions, a guide groove is opened on the upper part of the piston valve frame 201, and the guide groove of the piston valve frame 201 is inclined toward the outlet of the return pipe 106, a second spring 202 is fixedly connected between the piston valve frame 201 and the return pipe 106, the lower part of the piston valve frame 201 is movably connected to the left end of the rotating frame 107, an electromagnet 203 is fixedly connected to the left rear side of the water tank 101, the switch of the condensing machine 104 is electrically connected to the electromagnet 203 through the control module, and when power is turned on, the electromagnet 203 and the piston valve frame 201 are magnetically matched.

[0040] First, the liquid outlet pipe 105 and the return pipe 106 are respectively connected to the inlet and outlet of the cooling channel built into the fuel cell, and a sufficient amount of coolant is put into the right part of the water tank 101. Initially, the sliding frame 112 limits the sliding valve 110, and the first spring 111 is in a compressed state. The liquid outlet pipe 105 and the return pipe 106 are both in a closed state, blocked by the sliding valve 110 and the piston valve frame 201 respectively. Then, the condenser 104 is started by the switch, and the switch simultaneously starts the electromagnet 203 through the control module and energizes it for five seconds. Under the action of magnetic force, the piston valve frame 201 slides downward, and the second spring 202 is compressed. At this time, the guide groove of the piston valve frame 201 is connected to the outlet of the return pipe 106. At the same time, the downward sliding of the piston valve frame 201 will drive the rotating frame 107 to rotate, and the rotating frame 107 drives the sliding frame 112 to slide forward through the guide groove 1071. The first spring 111 resets and drives the sliding valve 110 to slightly Slide forward slightly, so that the acceleration valve slot of the sliding valve 110 is partially connected to the liquid outlet pipe 105, so that the liquid outlet pipe 105 and the return pipe 106 are respectively in the partially open and fully open states, and the condenser 104 relies on the pump driving force to make the coolant in the water tank 101 pass through the condenser 104 for condensation first, and then accelerate through the liquid outlet pipe 105 to enter the built-in cooling channel of the fuel cell, so that the coolant is close to the heat-generating stack part. In this process, the coolant absorbs the waste heat generated when the fuel cell is working. The coolant that absorbs the heat is then guided to the return pipe 106, and finally flows back to the right part of the water tank 101 through the return pipe 106. After five seconds, the electromagnet 203 is powered off. At this time, under the continuous impact force of the coolant in the return pipe 106, the piston valve frame 201 remains in the position after sliding downward. In this way, the return pipe 106 is continuously opened, realizing the circulation treatment of the coolant;

[0041] In the process of passing through the reflux pipe 106, the heat of the coolant is transferred to the ethyl acetate in the fixed cylinder 108. The ethyl acetate expands due to the heat, thereby pushing the push rod 109 to slide to the right. The push rod 109 pushes the sliding valve 110 to continue to slide to the right through the first spring 111. The more heat the coolant has, the greater the distance the sliding valve 110 slides to the right, the more coolant flows out through the liquid outlet pipe 105, and the greater the flow rate of the liquid. When the heat of the coolant gradually decreases, the ethyl acetate shrinks, thereby pulling the push rod 109 to slide to the left. The push rod 109 pulls the sliding valve 110 to slide to the left through the first spring 111. In this way, the condenser 104 can automatically and dynamically adjust the flow rate and outflow of the coolant according to the temperature of the fuel cell. The cooling effect can be controlled according to the actual heat dissipation needs of the battery to avoid over-cooling or insufficient cooling, thereby improving the overall energy utilization efficiency. By automatically adjusting to keep the fuel cell within the optimal operating temperature range, the service life of the fuel cell can be effectively extended, the damage to the internal structure of the fuel cell caused by thermal stress can be reduced, and it helps to maintain the stability of the fuel cell output power. Sufficient cooling is provided only when necessary, and unnecessary energy consumption can be avoided, which is in line with the environmental protection concept of energy conservation and emission reduction. The path of the guide groove 1071 is set as a smooth section, which can lock the sliding valve 110 by locking the sliding frame 112 when not in operation, thereby preventing ethyl acetate from being affected by the high temperature in the outside air, thereby pushing the sliding valve 110 to slide to the right and open.

[0042] When the condenser 104 is turned off, as the reflux amount of the coolant gradually decreases, the heat of the coolant gradually dissipates, the ethyl acetate shrinks and pulls the push rod 109 to slide to the left, and the push rod 109 pulls the sliding valve 110 to slide to the left through the first spring 111. At the same time, the second spring 202 gradually rebounds, thereby driving the piston valve frame 201 to automatically slide upward, and the piston valve frame 201 drives the rotating frame 107 to automatically reverse, and the rotating frame 107 drives the sliding frame 112 to slide backward through the guide groove 1071. The sliding frame 112 pulls the sliding valve 110 to move backward and reset, the first spring 111 is compressed, and the sliding valve 110 closes the liquid outlet pipe 105;

[0043] When coolant leaks in the cooling channel built into the fuel cell, as the reflux amount of coolant gradually decreases, the sliding valve 110 will automatically close the liquid outlet pipe 105, thereby automatically and timely preventing the coolant in the water tank 101 from continuously entering the cooling channel of the fuel cell, thereby stopping the supply of coolant, avoiding long-term continuous leakage of coolant, and reducing the negative impact of coolant leakage in the fuel cell.

[0044] Embodiment 2: Based on embodiment 1, Fig. 9, and also includes four fixing rods 301, the fixing rods 301 are fixedly connected in the water tank 101, and a floating plate 302 is slidably connected between the four fixing rods 301 along the up and down directions, wherein a first magnet 303 is fixedly connected between the two left fixing rods 301, and a baffle 304 magnetically matched with the first magnet 303 is fixedly connected to the left front part of the floating plate 302, and the baffle 304 is used to block the liquid inlet pipe of the condenser 104 when dripping.

[0045] Combined with Fig. 9 To Attachment Fig.10 , and also includes a filter screen 401, which is placed in the liquid inlet pipe of the condenser 104 to prevent impurities from entering the condenser 104. A second magnet 402 is fixedly connected to the liquid inlet pipe of the condenser 104, and the second magnet 402 and the filter screen 401 are magnetically attracted to each other.

[0046] Combined with Fig.11 , and also includes two flow meters 501, which are respectively fixed to the upper part of the liquid outlet pipe 105 and the return pipe 106, and the dials of the two flow meters 501 are both facing forward, so as to facilitate simultaneous observation of the flow conditions in the liquid outlet pipe 105 and the return pipe 106 from the front.

[0047] Combined with Fig.11 , also includes an observation plate 601, which is fixed to the front side of the water tank 101 and is used to observe the changes in the liquid level in the water tank 101 in time.

[0048] When the coolant leaks, the impact of the coolant on the piston valve frame 201 will hardly decrease, and the second spring 202 is still in a compressed state, so the liquid outlet pipe 105 is still in an open state. To prevent the liquid from continuing to leak, the liquid inlet pipe of the condenser 104 needs to be closed in time, specifically by the following operations: due to the occurrence of dripping, the liquid level in the water tank 101 gradually drops, the floating plate 302 drops with the liquid level, and the baffle 304 drops with the floating plate 302 to be adsorbed on the first magnet 303, blocking the condenser 10 4, thereby stopping the discharge of liquid. The filter 401 can filter out impurities when the coolant flows through the condenser 104 to prevent the impurities from entering the condenser 104. The flow meter 501 can timely observe the flow changes in the liquid outlet pipe 105 and the return pipe 106. At the same time, the observation plate 601 can also timely observe the liquid level changes in the water tank 101, so as to facilitate timely detection of coolant leakage. Finally, the water tank 101 can be opened, the filter 401 can be replaced or cleaned in time, and the coolant can be replenished.

[0049] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An activation table water tank for battery stack testing, comprising a water tank (101), the water tank (101) being fixedly connected to a fixing frame (102), the water tank (101) being fixedly connected to a fixing frame (103), the water tank (101) being fixedly connected to a condenser (104), the water tank (101) being fixedly connected to a liquid outlet pipe (105), the liquid outlet pipe (105) being connected to the condenser (104), and the water tank (101) being connected to a return pipe (106), characterized in that: The invention also comprises a rotating frame (107), wherein the rotating frame (107) is rotatably connected to the fixed frame (103), the rotating frame (107) is provided with a guide groove (1071), the reflux pipe (106) is connected with a fixed cylinder (108) for storing a thermal expansion agent, the fixed cylinder (108) is slidably connected with a push rod (109), the push rod (109) is slidably connected with the fixed frame (103), and a sliding valve (110) is slidably connected to a side of the push rod (109) away from the fixed cylinder (108), The sliding valve (110) is provided with an accelerating valve groove. The sliding valve (110) is slidably connected to the liquid outlet pipe (105). A first spring (111) is fixedly connected between the sliding valve (110) and the push rod (109). The sliding valve (110) is slidably connected to a sliding frame (112) for limiting the position of the sliding valve (110). The sliding frame (112) is limited in position by the guide groove (1071). The water tank (101) is provided with a control component for controlling the opening and closing of the sliding valve (110).

2. The activation table water tank for battery stack testing according to claim 1, characterized in that: The diameter of one side of the accelerating valve slot of the sliding valve (110) is larger than the diameter of the other side of the accelerating valve slot, so as to accelerate the outflow of liquid.

3. The activation table water tank for battery stack testing according to claim 2, characterized in that: The path of the guide groove (1071) is configured to be smooth at first and then tortuous.

4. The activation table water tank for battery stack testing according to claim 3, characterized in that: The control component comprises a piston valve frame (201), the piston valve frame (201) is vertically slidably connected to the return pipe (106), the piston valve frame (201) is provided with a guide groove, the guide groove of the piston valve frame (201) is inclined toward the outlet of the return pipe (106), a second spring (202) is fixedly connected between the piston valve frame (201) and the return pipe (106), the piston valve frame (201) is movably connected to the rotating frame (107), the water tank (101) is fixedly connected with an electromagnet (203), the switch of the condensing machine (104) is electrically connected to the electromagnet (203) through a control module, and when powered on, the electromagnet (203) and the piston valve frame (201) are magnetically matched.

5. The activation table water tank for battery stack testing according to claim 4, characterized in that: An activation table water tank for battery stack testing also includes a plurality of fixing rods (301), wherein the fixing rods (301) are fixedly connected in the water tank (101), and floating plates (302) are slidably connected between the fixing rods (301).

6. The activation table water tank for battery stack testing according to claim 5, characterized in that: An activation table water tank for battery stack testing also includes a first magnet (303), wherein the first magnet (303) is fixed between any two adjacent fixing rods (301), and the floating plate (302) is fixed with a baffle (304) that magnetically cooperates with the first magnet (303).

7. The activation table water tank for battery stack testing according to claim 6, characterized in that: An activation table water tank for battery stack testing also includes a filter screen (401), the filter screen (401) is placed in the liquid inlet pipe of the condenser (104), a second magnet (402) is fixedly connected in the liquid inlet pipe of the condenser (104), and the second magnet (402) is magnetically matched with the filter screen (401).

8. The activation table water tank for battery stack testing according to claim 7, characterized in that: An activation table water tank for battery stack testing also includes two flow meters (501), the two flow meters (501) are respectively fixed to the liquid outlet pipe (105) and the return pipe (106), and the two flow meters (501) face the same direction.

9. The activation table water tank for battery stack testing according to claim 8, characterized in that: An activation table water tank for battery stack testing also includes an observation plate (601), wherein the observation plate (601) is fixedly connected to the water tank (101).

10. A method for using an activation table water tank for battery stack testing, comprising the following steps: S1: First, the liquid outlet pipe (105) and the return pipe (106) are connected to the inlet and outlet of the cooling channel built into the fuel cell respectively, and a sufficient amount of coolant is placed in the right part of the water tank (101); S2: when cooling the fuel cell, the condenser (104) is started, and the liquid outlet pipe (105) and the return pipe (106) are respectively in a partially open state and a fully open state; S3: Affected by the temperature, the sliding valve (110) of the liquid outlet pipe (105) automatically adjusts the size of the acceleration valve slot; S4: When cooling is completed, the condenser (104) is automatically turned off.

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