Forklift fuel cell air system and electric forklift
By using a blower to replace the air compressor in the forklift fuel cell air system and using controllable valves to achieve one-button drainage, the problems of high noise and inconvenient drainage of the air compressor are solved, and the efficiency and convenience of the system are improved.
Patent Information
- Application Number
- CN202420427481.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-05
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2034-03-05
AI Technical Summary
In the existing fuel cell air system, the air compressor is noisy and inconvenient to drain, which increases the power consumption and labor cost of the system's auxiliary components.
A forklift fuel cell air system was designed, and a blower was used to replace the air compressor to reduce noise, and one-click drainage was realized through controllable valves and operating panels, solving the problem of drainage inconvenience.
It effectively reduces the noise of the system, improves the convenience and efficiency of drainage, and reduces the power consumption and labor costs of accessories.
Smart Images
Figure CN222826433U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of fuel cell air systems, in particular to a forklift fuel cell air system and an electric forklift. Background Art
[0002] It is of great significance to use green, low-carbon energy with a wide range of sources. Hydrogen energy, as a secondary energy source, accounts for 75% of hydrogen in the universe and has a very wide range of sources. Its calorific value is three times that of gasoline, and no carbon is generated after combustion or electrochemical reaction. Therefore, it has received more and more attention and promotion.
[0003] Fuel cell systems, as an important tool for using hydrogen energy, are gradually being widely used in long-distance heavy-load road transportation, rail transportation, ships, aircraft, independent power supplies, combined heat and power, light vehicles (such as two-wheelers and three-wheelers) and other scenarios due to their high efficiency (theoretical efficiency can reach more than 80%), zero emission and pollution-free (the product is only water), good low-temperature adaptability (normal use at 10°C), and fast energy replenishment. At present, fuel cell systems at home and abroad are developing in the direction of higher power and high efficiency. The commonly used practice is to add an expander to the air compressor. The expander can effectively recover the energy of the gas at the air side outlet of the stack, thereby reducing the power consumption of system accessories and improving system efficiency. However, the air compressor is noisy; the use of a manual drain valve makes drainage inconvenient and increases labor costs. Utility Model Content
[0004] The purpose of the embodiments of the utility model is to provide a forklift fuel cell air system and an electric forklift, which solve the problem of high noise of the air compressor and the problem of inconvenient drainage.
[0005] In order to achieve the above-mentioned purpose, the embodiment of the utility model provides a forklift fuel cell air system, the air system comprising:
[0006] Fuel cell stack;
[0007] an air supply unit connected to one end of the fuel cell stack and used to provide air to the fuel cell stack, the air supply unit comprising a blower, the blower being used to blow air into the fuel cell stack;
[0008] An exhaust portion, one end of which is connected to the other end of the fuel cell stack;
[0009] A separation part, wherein a first end of the separation part is connected to the other end of the exhaust part, and a second end of the separation part is used to exhaust the separated gas;
[0010] a drainage portion connected to the third end of the separation portion, wherein the drainage portion includes a controllable valve;
[0011] An operation panel is connected to the controllable valve and is used to control the opening and closing of the controllable valve.
[0012] Optionally, the air supply unit includes: an air filter for filtering air, wherein the air filter is connected to one end of the blower, and the other end of the blower is connected to the fuel cell stack for blowing filtered gas into the fuel cell stack.
[0013] Optionally, the exhaust part includes: a back pressure valve, one end of which is connected to the other end of the fuel cell stack for controlling exhaust.
[0014] Optionally, the separation part includes a water tank, a first end of the water tank is connected to the other end of the exhaust part, the water tank is used to condense the gas exhausted from the exhaust part, the second end of the water tank is used to discharge the condensed gas, and the third end of the water tank is arranged at the bottom of the water tank for discharging the condensed water.
[0015] Optionally, the separation part includes a liquid level sensor, which is arranged at a preset height in the water tank and is used to detect the liquid level of the water tank.
[0016] Optionally, the air system includes a display panel connected to the liquid level sensor for displaying the liquid level height inside the water tank.
[0017] Optionally, the display panel is arranged on a center console of the forklift.
[0018] Optionally, the operation panel is arranged on a center console of the forklift.
[0019] On the other hand, the utility model includes an electric forklift, which includes a forklift body and any air system as described above.
[0020] Through the above technical solution, the air system includes a fuel cell stack, an air supply part, an exhaust part, a separation part, a drainage part and an operation panel. The air passes through the air supply part, and the blower blows the air into the cathode of the fuel cell stack. Under the action of the catalyst, the oxygen and hydrogen in the air undergo electrochemical reactions to generate electricity and generate water at the same time. The excess air is discharged from the second end of the separation part through the exhaust part, and the generated water reaches the third end of the separation part. The controllable valve is controlled by the operation panel to achieve one-click drainage. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] The accompanying drawings are used to provide a further understanding of the embodiments of the present utility model and constitute a part of the specification. Together with the following specific implementations, they are used to explain the embodiments of the present utility model, but do not constitute a limitation on the embodiments of the present utility model. In the accompanying drawings:
[0022] Figure 1 is a framework diagram of a forklift fuel cell air system according to one embodiment of the utility model;
[0023] Figure 2 It is a schematic diagram of a forklift fuel cell air system according to one embodiment of the utility model.
[0024] Description of Reference Numerals
[0025] 1. Fuel cell stack 2. Air supply unit
[0026] 3. Exhaust section 4. Separation section
[0027] 5. Drainage unit 6. Operation panel
[0028] 21. Blower 22. Air filter
[0029] 31. Back pressure valve 41. Water storage tank
[0030] 42. Liquid level sensor 7. Display panel
[0031] 51. Controllable valve DETAILED DESCRIPTION
[0032] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.
[0033] In the embodiments of the present application, unless otherwise specified, directional words such as "up, down, top, bottom" are usually used with reference to the directions shown in the drawings or are used to describe the relative positional relationships of components in the vertical, perpendicular or gravity direction.
[0034] In addition, if there are descriptions involving "first", "second", etc. in the implementation methods of this application, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various implementation methods can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.
[0035] like Figure 1 As shown, Figure 1This is a framework diagram of a forklift fuel cell air system according to an embodiment of the present utility model. Figure 1 In the figure, the air system includes a fuel cell stack 1, an air supply part 2, an exhaust part 3, a separation part 4, a drainage part 5 and an operation panel 6, wherein the air supply part 2 is connected to one end of the fuel cell stack 1 for filtering air, and the air supply part 2 includes a blower 21 for blowing air into the fuel cell stack 1; one end of the exhaust part 3 is connected to the other end of the fuel cell stack 1; the first end of the separation part 3 is connected to the other end of the exhaust part 3, and the second end of the separation part 3 is used to discharge the separated gas; the drainage part 5 is connected to the third end of the separation part 4, and the drainage part 5 includes a controllable valve 51; the operation panel 6 is connected to the controllable valve 51 for controlling the opening and closing of the controllable valve 51. The air passes through the air supply part 2, and the blower 21 blows the air into the cathode of the fuel cell stack 1. Under the action of the catalyst, the oxygen and hydrogen in the air undergo electrochemical reaction to generate electricity and generate water at the same time. The excess air is discharged from the second end of the separation part 4 through the exhaust part 3, and the generated water reaches the third end of the separation part 4. The controllable valve 51 is controlled by the operation panel 6 to achieve one-click drainage.
[0036] In this embodiment, the structure of the air supply unit 2 can be various structures known to those skilled in the art. In one embodiment of the present invention, Figure 2 As shown, the air supply unit 2 includes an air filter 22, and the air filter 22 is used to filter air. The air filter 22 is connected to one end of the blower 21, and the other end of the blower 21 is connected to the fuel cell stack 1. The blower 21 is used to blow the air filtered by the air filter 22 into the fuel cell stack 1. In the prior art, the air system often uses an air compressor to achieve air supply to the fuel cell stack 1, but the air compressor is noisy. In one embodiment of the utility model, a blower 21 is used. The blower 21 can blow air into the fuel cell stack, and the blower 21 has a lower rotation speed than the air compressor and has less noise.
[0037] In this embodiment, the structure of the exhaust part 3 can be a variety of structures known to those skilled in the art. In one embodiment of the utility model, the exhaust part 3 includes a back pressure valve 31, one end of the back pressure valve 31 is connected to the other end of the fuel cell stack 1, and is used to control the exhaust. The back pressure valve 31 is a valve for controlling air pressure, which can generate back pressure in the air pipe, thereby achieving the purpose of controlling air flow and air pressure.
[0038] In this embodiment, the structure of the separation part 4 can be a variety of structures known to those skilled in the art. In one embodiment of the present utility model, the separation part 4 includes a water tank 41, the first end of the water tank 41 is connected to the other end of the exhaust part 3, the water tank 41 is used to condense the gas discharged from the exhaust part 3, the second end of the water tank 41 is used to discharge the condensed gas, and the third end of the water tank 41 is arranged at the bottom of the water tank 41 to discharge the condensed water. Excess air passes through the back pressure valve 31 to the first end of the water tank 41 and mixes with the hydrogen discharged from the fuel cell stack 3 into the water tank 41, and after mixing, is discharged from the second end of the water tank 41 in the form of tail gas.
[0039] In this embodiment, the structure of the separation part 4 can be various structures known to those skilled in the art. Considering the operation problem of drainage, in one embodiment of the present utility model, Figure 2 As shown, the separation part 4 also includes a liquid level sensor 42, which is arranged at a preset height in the water tank 41 and is used to detect the liquid level of the water tank 41. The air passes through the air supply part 2, and the blower 21 blows the air into the cathode of the fuel cell stack 1. Under the action of the catalyst, the oxygen and hydrogen in the air undergo an electrochemical reaction to generate electricity and water. When the liquid level sensor 42 detects the liquid level of the water tank 41, one-click drainage can be achieved.
[0040] In this embodiment, the structure of the air system can be any of the various structures known to those skilled in the art. In one embodiment of the present invention, the air system further includes a display panel 7, which is a major component of the display and a major tool for the display to provide image information to the outside. The display panel 7 is connected to the liquid level sensor 42 and is used to display the liquid level inside the water tank 41. The position of the display panel 7 can be any of the various structures known to those skilled in the art. In one embodiment of the present invention, the display panel 7 is disposed on the center console of the forklift. The position of the operation panel 6 can be any of the various structures known to those skilled in the art. In one embodiment of the present invention, the operation panel 6 is disposed on the center console of the forklift.
[0041] In addition, the utility model also includes an electric forklift, which includes a forklift body and any air system as described above.
[0042] Through the above technical scheme, the air system includes a fuel cell stack 1, an air supply part 2, an exhaust part 3, a separation part 4, a drainage part 5 and an operation panel 6, wherein the air supply part 2 is connected to one end of the fuel cell stack 1 for filtering air, and the air supply part 2 includes a blower 21, and the blower 21 is used to blow air into the fuel cell stack 1; one end of the exhaust part 3 is connected to the other end of the fuel cell stack 1; the first end of the separation part 3 is connected to the other end of the exhaust part 3, and the second end of the separation part 3 is used to discharge the separated gas; the drainage part 5 is connected to the third end of the separation part 4, and the drainage part 5 includes a controllable valve 51; the operation panel 6 is connected to the controllable valve 51 for controlling the opening and closing of the controllable valve 51. The air passes through the air supply part 2, and the blower 21 blows the air into the cathode of the fuel cell stack 1. Under the action of the catalyst, the oxygen and hydrogen in the air undergo electrochemical reaction to generate electricity and generate water at the same time. The excess air is discharged from the second end of the separation part 4 through the exhaust part 3, and the generated water reaches the third end of the separation part 4. The controllable valve 51 is controlled by the operation panel 6 to achieve one-click drainage.
[0043] The optional implementation modes of the utility model examples are described in detail above in conjunction with the accompanying drawings. However, the implementation modes of the utility model are not limited to the specific details in the above implementation modes. Within the technical concept of the implementation modes of the utility model, various simple modifications can be made to the technical solutions of the implementation modes of the utility model. These simple modifications all belong to the protection scope of the implementation modes of the utility model.
[0044] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the various possible combinations of the embodiments of the present utility model will not be described separately.
[0045] In addition, various different embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed in the embodiments of the present invention.
Claims
1. A forklift fuel cell air system, characterized in that: The air system comprises: Fuel cell stack; an air supply unit connected to one end of the fuel cell stack and used to provide air to the fuel cell stack, the air supply unit comprising a blower, the blower being used to blow air into the fuel cell stack; An exhaust portion, one end of which is connected to the other end of the fuel cell stack; A separation part, wherein a first end of the separation part is connected to the other end of the exhaust part, and a second end of the separation part is used to exhaust the separated gas; a drainage portion connected to the third end of the separation portion, wherein the drainage portion includes a controllable valve; An operation panel is connected to the controllable valve and is used to control the opening and closing of the controllable valve.
2. The air system according to claim 1, characterized in that The air supply unit includes an air filter for filtering air, wherein the air filter is connected to one end of the blower, and the other end of the blower is connected to the fuel cell stack for blowing filtered gas into the fuel cell stack.
3. The air system according to claim 1, characterized in that The exhaust part includes a back pressure valve, one end of which is connected to the other end of the fuel cell stack for controlling exhaust.
4. The air system according to claim 1, characterized in that The separation part includes a water tank, a first end of which is connected to the other end of the exhaust part, the water tank is used to condense the gas exhausted from the exhaust part, the second end of the water tank is used to discharge the condensed gas, and the third end of the water tank is arranged at the bottom of the water tank to discharge the condensed water.
5. The air system according to claim 4, characterized in that The separation part includes a liquid level sensor, which is arranged at a preset height in the water tank and is used to detect the liquid level of the water tank.
6. The air system according to claim 5, characterized in that The air system includes a display panel connected to the liquid level sensor and used for displaying the liquid level height inside the water tank.
7. The air system according to claim 6, characterized in that The display panel is arranged on the center console of the forklift.
8. The air system according to claim 1, characterized in that The operation panel is arranged on the center console of the forklift.
9. An electric forklift, characterized in that: The electric forklift comprises a forklift body and the air system according to any one of claims 1 to 8.