Insulation radiator for hydrogen fuel electric vehicle

Abstract

The invention relates to the technical field of new energy automobile thermal management, and discloses an insulating radiator for a hydrogen fuel electric vehicle, which comprises a core body, an upper water chamber arranged above the core body, a lower water chamber arranged below the core body, an upper protective plate arranged above the upper water chamber, and a lower protective plate arranged below the lower water chamber, and a plurality of insulating soft cushions are arranged between the upper water chamber and the upper protective plate and between the lower water chamber and the lower protective plate, so that a current conduction path is blocked and vibration energy is absorbed. According to the insulating radiator for the hydrogen fuel electric vehicle, the insulating requirement is met through the structural design, the core body damping effect is achieved, thermal stress is effectively released, and product failure caused by thermal stress is prevented.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of new energy vehicle thermal management, in particular to an insulated radiator for hydrogen fuel electric vehicle. BACKGROUND

[0002] In order to prevent electric shock of people inside and outside the vehicle, and to ensure the safety of the driver, passengers and the surrounding environment of the vehicle, high-voltage electrical insulation treatment of the fuel cell system, especially high-voltage electrical insulation operation of the cooling system, is very important.

[0003] GB / T18384.3-2015 Electric Vehicle Safety Requirements Part 3: Personnel Electric Shock Protection Requirements: The minimum value of the direct current circuit insulation resistance should be at least 100Ω / V under the maximum working voltage, and the alternating current circuit should be at least 500Ω / V.

[0004] Due to the structural characteristics of the hydrogen fuel cell system, in order to take away the heat generated during the operation of the hydrogen fuel cell, the cooling liquid needs to flow through the high-potential bipolar plate. In this process, high-voltage electricity will be conducted to the outside through the cooling liquid, so the insulation requirement is very high.

[0005] The cooling system needs to ensure the normal operation of the fuel cell system and meet the insulation requirements, mainly relying on two strategies: 1. Improve the mechanical structure and material of the cooling system; 2. Reduce the electrical conductivity of the fuel cell cooling liquid.

[0006] The scheme of reducing the electrical conductivity of the fuel cell cooling liquid is mainly to use a deionization device to clean the parts, so the deionization device needs to be regularly maintained, and the whole device structure is complex and has low reliability.

[0007] Therefore, further improvement is still needed in the structure design and material selection of the parts to meet the requirements.

[0008] In addition, the conventional radiator also has the problem of core leakage due to vibration, and the thermal stress cannot be released, which will accelerate the aging of the material. SUMMARY

[0009] The purpose of the present application is to solve the above technical problems, and provide an insulated radiator for hydrogen fuel electric vehicle, which meets the insulation requirements through structural design, has a core shock absorption effect, effectively releases thermal stress, and prevents product failure due to thermal stress.

[0010] In order to achieve the above-mentioned purpose, the insulating radiator for hydrogen fuel electric vehicle designed by the present application comprises a core body, an upper water chamber arranged above the core body, a lower water chamber arranged below the core body, an upper protective plate arranged above the upper water chamber, a lower protective plate arranged below the lower water chamber, and a plurality of insulating soft pads arranged between the upper water chamber and the upper protective plate and between the lower water chamber and the lower protective plate, which block the current conduction path and absorb vibration energy.

[0011] Preferably, the insulating soft pad is a double-ring structure, a buckle ring is formed by concave between the first ring structure at the top and the second ring structure at the bottom, mounting holes matched with the buckle ring are arranged on the upper protective plate and the lower protective plate, the inner diameter of the mounting hole is greater than the inner diameter of the buckle ring and less than the inner diameter of the first ring structure at the top of the insulating soft pad.

[0012] Preferably, a metal outer bushing is arranged on the upper surface of the second ring structure at the bottom of the insulating soft pad to improve wear resistance.

[0013] Preferably, the metal outer bushing is vulcanized with the insulating soft pad.

[0014] Preferably, the insulating soft pad is made of silicone rubber material.

[0015] Preferably, a boss structure is arranged on the upper water chamber and the lower water chamber, the boss structure is embedded in the insulating soft pad and the height thereof does not exceed the thickness of the insulating soft pad.

[0016] Preferably, left and right protective plates are further arranged, and the left and right protective plates are fixed on the two sides of the core body through detachable connecting pieces.

[0017] Preferably, the left and right protective plates are connected with the upper protective plate and the lower protective plate through detachable connecting pieces and are fixed on the two sides of the core body to avoid contact with the core body.

[0018] Preferably, the left and right protective plates form a modular mounting frame with the upper protective plate and the lower protective plate through detachable connecting pieces, which facilitates installation and disassembly.

[0019] Preferably, the core body is connected with the frame through the upper protective plate and the lower protective plate or through the left and right protective plates, which can be arranged as required.

[0020] Compared with the prior art, the present application has the following advantages: 1. The insulating radiator effectively insulates the electric pile radiator from the physical aspect, ensures the safety of the operator, and meets the regulatory requirements. 2. The insulating radiator plays a role in shock absorption, effectively releases the vibration excitation of the radiator during vehicle operation, and improves the reliability and service life of the radiator. 3. By using insulating pads for shock absorption, the product's vibration resistance is improved during vehicle operation, effectively preventing vibration failure. This structure also helps to effectively release thermal stress in the core during the heat dissipation process when the radiator expands due to heat, preventing the risk of product leakage caused by thermal stress failure. 3. The traditional radiator installation method has been changed to adapt to various installation requirements. It can be installed in the traditional way on the inside of the frame at the bottom of the cab and in front of the vehicle. Alternatively, it can be installed on the side of the vehicle by changing the mounting bracket structure. It can be installed using the left and right guard plates or fixed using the upper and lower guard plates. If necessary, it can be arranged as a crossflow radiator. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the insulating radiator used in hydrogen fuel cell electric vehicles according to the present invention; Figure 2 for Figure 1 A schematic diagram of the structure of the insulating pad.

[0022] The components in the diagram are labeled as follows: Core 1, Upper water chamber 2, Lower water chamber 3, Upper protective plate 4, Lower protective plate 5, Insulating pad 6, First ring structure 7, Second ring structure 8, Clip ring 9, Mounting hole 10, Metal outer bushing 11, Boss structure 12, Left protective plate 13, Right protective plate 14. Detailed Implementation

[0023] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the invention.

[0024] Example 1 like Figure 1 As shown, an insulating radiator for a hydrogen fuel cell electric vehicle includes a core 1, an upper water chamber 2 above the core 1, a lower water chamber 3 below the core 1, an upper protective plate 4 above the upper water chamber 2, and a lower protective plate 5 below the lower water chamber 3. Several insulating pads 6 are provided between the upper water chamber 2 and the upper protective plate 4, and between the lower water chamber 3 and the lower protective plate 5, to block the current conduction path and absorb vibration energy.

[0025] Example 2 like Figure 1As shown, an insulating radiator for a hydrogen fuel cell electric vehicle includes a core 1, an upper water chamber 2 above the core 1, a lower water chamber 3 below the core 1, an upper protective plate 4 above the upper water chamber 2, and a lower protective plate 5 below the lower water chamber 3. Several insulating pads 6 are provided between the upper water chamber 2 and the upper protective plate 4, and between the lower water chamber 3 and the lower protective plate 5, to block the current conduction path and absorb vibration energy.

[0026] In this embodiment, combined with Figure 2 As shown, the insulating pad 6 has a double-ring structure. The first ring structure 7 at the top and the second ring structure 8 at the bottom are recessed to form a snap ring 9. The upper guard plate 4 and the lower guard plate 5 are both provided with mounting holes 10 that cooperate with the snap ring 9. The inner diameter of the mounting hole 10 is larger than the inner diameter of the snap ring 9 and smaller than the inner diameter of the first ring structure 7 at the top of the insulating pad 6.

[0027] Among them, the upper surface of the second annular structure 8 at the bottom of the insulating pad 6 is covered with a metal outer sleeve 11, and the metal outer sleeve 11 is vulcanized with the insulating pad 6 as a whole. The insulating pad 6 is made of silicone rubber material.

[0028] Example 3 like Figure 1 As shown, an insulating radiator for a hydrogen fuel cell electric vehicle includes a core 1, an upper water chamber 2 above the core 1, a lower water chamber 3 below the core 1, an upper protective plate 4 above the upper water chamber 2, and a lower protective plate 5 below the lower water chamber 3. Several insulating pads 6 are provided between the upper water chamber 2 and the upper protective plate 4, and between the lower water chamber 3 and the lower protective plate 5, to block the current conduction path and absorb vibration energy.

[0029] In this embodiment, combined with Figure 2 As shown, the insulating pad 6 has a double-ring structure. The first ring structure 7 at the top and the second ring structure 8 at the bottom are recessed to form a snap ring 9. The upper guard plate 4 and the lower guard plate 5 are both provided with mounting holes 10 that cooperate with the snap ring 9. The inner diameter of the mounting hole 10 is larger than the inner diameter of the snap ring 9 and smaller than the inner diameter of the first ring structure 7 at the top of the insulating pad 6.

[0030] Among them, the upper surface of the second annular structure 8 at the bottom of the insulating pad 6 is covered with a metal outer sleeve 11, and the metal outer sleeve 11 is vulcanized with the insulating pad 6 as a whole. The insulating pad 6 is made of silicone rubber material.

[0031] In addition, in this embodiment, both the upper water chamber 2 and the lower water chamber 3 are provided with a boss structure 12, which is embedded in the insulating pad 6 and its height does not exceed the thickness of the insulating pad 6.

[0032] In the above embodiment, a left guard plate 13 and a right guard plate 14 are also included. The left guard plate 13 and the right guard plate 14 are fixed to both sides of the core 1 by detachable connectors. Specifically, the left guard plate 13 and the right guard plate 14 are both connected to the upper guard plate 4 and the lower guard plate 5 by detachable connectors and fixed to both sides of the core 1. The left guard plate 13 and the right guard plate 14 form a modular installation frame with the upper guard plate 4 and the lower guard plate 5 by detachable connectors. In order to adapt to the application requirements of different scenarios, the core 1 is connected to the vehicle frame through the upper guard plate 4 and the lower guard plate 5, or through the left guard plate 13 and the right guard plate 14, and the installation method is diversified.

[0033] This invention relates to an insulated radiator for hydrogen fuel cell electric vehicles. It effectively insulates the fuel cell stack radiator physically, ensuring operator safety and meeting regulatory requirements. It also acts as a shock absorber, effectively releasing vibration excitation from the radiator during vehicle operation, thus improving its reliability and lifespan. Through the shock absorption of the insulating pad 6, it enhances the product's vibration resistance during vehicle operation, effectively preventing vibration failure. This structure also effectively releases thermal stress in the core during the radiator's thermal expansion, preventing leakage risks due to thermal stress failure. It changes the traditional radiator installation method, adapting to various installation needs. It can be installed traditionally inside the frame at the bottom of the cab in front of the vehicle, or it can be installed on the side of the vehicle by modifying the mounting bracket structure. It can be installed using left and right guard plates, or fixed using upper and lower guard plates. If necessary, it can be used as a crossflow radiator.

[0034] It should be noted that the above description of the technical solutions is exemplary, and this specification may be embodied in different forms and should not be construed as limiting it to the technical solutions set forth herein. Rather, providing these descriptions will ensure that the disclosure of this invention is thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. Furthermore, the technical solutions of this invention are defined only by the scope of the claims.

[0035] The aspects disclosed in this specification and claims are merely examples, and therefore, this specification and claims are not limited to the details shown. In the foregoing description, detailed descriptions of relevant known functions or configurations have been omitted where it would unnecessarily obscure the focus of this specification and claims.

[0036] Finally, it should be noted that the above description is a further detailed explanation of the invention in conjunction with specific embodiments. It should not be considered that the specific implementation of the invention is limited to these descriptions. For those skilled in the art, any simple substitutions made without departing from the concept of the invention should be considered within the scope of protection of this invention. The above embodiments are merely representative examples of the invention. Obviously, the invention is not limited to the above embodiments and many variations are possible. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the invention should be considered within the scope of protection of this invention.

Claims

1. An insulating radiator for a hydrogen fuel cell electric vehicle, comprising a core (1), an upper water chamber (2) above the core (1), a lower water chamber (3) below the core (1), and further comprising an upper protective plate (4) above the upper water chamber (2) and a lower protective plate (5) below the lower water chamber (3), characterized in that: Several insulating pads (6) are provided between the upper water chamber (2) and the upper protective plate (4), and between the lower water chamber (3) and the lower protective plate (5) to block the current conduction path and absorb vibration energy.

2. The insulating radiator for hydrogen fuel cell electric vehicles according to claim 1, characterized in that: The insulating pad (6) has a double ring structure. The first ring structure (7) at the top and the second ring structure (8) at the bottom are recessed to form a snap ring (9). The upper guard plate (4) and the lower guard plate (5) are provided with mounting holes (10) that cooperate with the snap ring (9). The inner diameter of the mounting hole (10) is larger than the inner diameter of the snap ring (9) and smaller than the inner diameter of the first ring structure (7) at the top of the insulating pad (6).

3. The insulating radiator for hydrogen fuel cell electric vehicles according to claim 2, characterized in that: The upper surface of the second annular structure (8) at the bottom of the insulating pad (6) is padded with a metal outer sleeve (11).

4. The insulating radiator for hydrogen fuel cell electric vehicles according to claim 3, characterized in that: The metal outer bushing (11) and the insulating pad (6) are vulcanized together.

5. The insulating radiator for hydrogen fuel cell electric vehicles according to claim 1, characterized in that: The insulating pad (6) is made of silicone rubber.

6. The insulating radiator for hydrogen fuel cell electric vehicles according to claim 1, characterized in that: Both the upper water chamber (2) and the lower water chamber (3) are provided with a boss structure (12), which is embedded in the insulating pad (6) and its height does not exceed the thickness of the insulating pad (6).

7. The insulating radiator for hydrogen fuel cell electric vehicles according to claim 1, characterized in that: It also includes a left guard plate (13) and a right guard plate (14), which are fixed to both sides of the core (1) by detachable connectors.

8. The insulating radiator for hydrogen fuel cell electric vehicles according to claim 7, characterized in that: The left guard plate (13) and the right guard plate (14) are both connected to the upper guard plate (4) and the lower guard plate (5) by detachable connectors and are fixed on both sides of the core (1).

9. The insulating radiator for a hydrogen fuel cell electric vehicle according to claim 8, characterized in that: The left guard plate (13) and the right guard plate (14) are connected to the upper guard plate (4) and the lower guard plate (5) through detachable connectors to form a modular installation frame.

10. The insulating radiator for a hydrogen fuel cell electric vehicle according to claim 7, characterized in that: The core (1) is connected to the frame via the upper guard plate (4) and the lower guard plate (5), or via the left guard plate (13) and the right guard plate (14).

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