Thick film liquid heater with two sets of independent control waterways

Abstract

The utility model provides a thick film liquid heater with two sets of independent control waterways, and relates to the technical field of new energy automobile heaters. The thick film liquid heater with the two sets of independent control waterways comprises a shell, a power interface part and an electronic control module. An upper thick film heating element is installed in the upper heating containing cavity, an upper water inlet and an upper water outlet which are communicated with the upper heating containing cavity are formed in the outer side of the shell, and a lower thick film heating element is installed in the lower heating containing cavity. The outer side of the shell is provided with a lower water inlet and a lower water outlet which are communicated with the lower heating containing cavity, and the power interface part and the electronic control module are installed on the shell in a matched mode. Through innovative design, two sets of independently controlled water paths are integrated in one heater, so that the purchase cost, the installation cost and the later maintenance cost of the heater are greatly reduced, the manufacturing cost of a new energy automobile is reduced, and the market competitiveness of the product is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to new energy automobile heater technical field, specifically, relate to a kind of thick film liquid heater with two sets of independent control waterway. BACKGROUND

[0002] In new energy automobile, battery pack and passenger compartment need to be heated to meet the demand under different conditions. The current common heating mode has the following limitations: 1. If a liquid heater is used to heat battery pack and passenger compartment, the temperature of the two areas cannot be controlled separately, which may lead to inaccurate heating demand in some cases, such as rapid temperature rise of battery pack while the temperature of passenger compartment is appropriate, or different temperature adjustment of passenger compartment, affecting battery performance and passenger comfort. 2. If two independent liquid heaters are used to heat battery pack and passenger compartment respectively, although the temperature can be controlled separately, the cost will be greatly increased, including the purchase cost of the heater itself, the cost of two sets of high and low voltage connectors, the cost of wire harness, and the cost of later maintenance. At the same time, it will also occupy more vehicle space, increase the weight and complexity of the whole vehicle, which is not conducive to the lightweight and high efficiency design of new energy vehicles. SUMMARY

[0003] The utility model aims at at least one of the technical problems existing in the prior art. To this end, the utility model provides a thick film liquid heater with two sets of independent control waterway to solve the problem of high cost and large space occupation of two groups of independent liquid heaters for battery pack heating and passenger compartment, and the problem of temperature control failure in heating.

[0004] According to the thick film liquid heater with two sets of independent control waterway of the utility model embodiment, the shell is provided with upper heating cavity and lower heating cavity which are separated from each other, the upper thick film heating element is installed in the upper heating cavity to heat the internal cavity, the upper water inlet and the upper water outlet are arranged on the outer side of the shell and communicated with the upper heating cavity, the lower thick film heating element is installed in the lower heating cavity to heat the internal cavity, the lower water inlet and the lower water outlet are arranged on the outer side of the shell and communicated with the lower heating cavity, and the power interface part is installed in cooperation with the shell. The two groups of aluminum radiating fins are arranged at the bottom of the upper thick film heating element and the top of the lower thick film heating element to heat the fluid in the upper heating cavity and the lower heating cavity, and the middle area of the upper heating cavity and the middle area of the lower heating cavity are provided with turbulence area protruding from the bottom wall. The impurity filtering assembly includes end cover and filter cartridge, the filter cartridge net hole end is provided with column rod and support rod, the other end of the column rod is in sliding cooperation with the end cover, the spring is sleeved outside the column rod, the end face of the end cover is provided with flow guide port, and the support rod is provided with plugging block matched with the flow guide port at the end close to the end cover.

[0005] Preferably, the upper heating cavity top and the lower heating cavity bottom are respectively provided with detachable upper covers and bottom covers for installation and maintenance.

[0006] Preferably, the electronic control module is installed in the mounting groove at one end of the shell, and the mounting groove is provided with a detachable rear cover.

[0007] Preferably, the power interface part includes low-voltage connectors and high-voltage connectors, which are installed in cooperation with the shell.

[0008] Preferably, the upper thick-film heating element bottom and the lower thick-film heating element top are both provided with sealing washers, which are located outside the lower thick-film heating element.

[0009] Preferably, sensors are installed in the upper water inlet, the upper water outlet, the lower water inlet and the lower water outlet.

[0010] Preferably, the electronic control module is installed on a separate structure that is not part of the shell.

[0011] Preferably, a sealing ring is provided on the outside of the tail end of the filter cartridge.

[0012] The thick-film liquid heating appliance with two sets of independently controlled water circuits obtained through the above design has the following technical effects:

[0013] 1. Compared with using two independent liquid heaters, the two sets of independently controlled water circuits are integrated in one heater through innovative design, greatly reducing the procurement cost, installation cost and maintenance cost of the heater, reducing the manufacturing cost of the new energy vehicle, and improving the market competitiveness of the product.

[0014] 2. The number of heaters and the complexity of related pipelines are reduced, the vehicle space occupied is smaller, which is conducive to the lightweight design of the new energy vehicle and the reasonable layout of the internal space, and improves the overall performance and space utilization of the vehicle.

[0015] 3. The heating temperature of the battery pack and the passenger compartment can be independently and accurately controlled, meeting the different temperature requirements of the two areas of the new energy vehicle under different working conditions, effectively improving the performance and service life of the battery, and improving the comfort of the passengers.

[0016] 4. Due to the accurate temperature control and efficient heat exchange design, unnecessary energy consumption is reduced, energy utilization efficiency is improved, and the cruising range of the new energy vehicle is prolonged.

[0017] The additional aspects and advantages of the present application will be given partly in the following description, partly will become obvious from the following description, or will be understood by the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments of the present application, and it should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation to the scope, and for those skilled in the art, other related drawings can also be obtained according to these drawings without creative labor.

[0019] Figure 1 is a structure schematic diagram of a thick film liquid heater with two sets of independent control waterways according to the embodiment of the present application;

[0020] Figure 2 is a structure schematic diagram of a thick film liquid heater with two sets of independent control waterways according to the embodiment of the present application;

[0021] Figure 3 is a structure schematic diagram of a thick film liquid heater without shell according to the embodiment of the present application;

[0022] Figure 4 is a structure schematic diagram of a shell according to the embodiment of the present application Figure 1 ;

[0023] Figure 5 is a structure schematic diagram of a shell according to the embodiment of the present application Figure 2 ;

[0024] Figure 6 is a structure schematic diagram of a lower thick film heating element, aluminum heat sink and sealing gasket according to the embodiment of the present application;

[0025] Figure 7 is a structure schematic diagram of an impurity filtering assembly according to the embodiment of the present application.

[0026] Reference signs:

[0027] 1, shell; 101, upper heating cavity; 102, lower heating cavity; 103, turbulent flow area; 11, upper cover; 12, bottom cover; 13, rear cover; 21, upper water inlet; 22, upper water outlet; 23, lower water inlet; 24, lower water outlet; 3, power interface part; 31, low-voltage plug; 32, high-voltage plug; 4, electronic control module; 5, upper thick film heating element; 6, lower thick film heating element; 7, aluminum heat sink; 8, sealing washer; 91, end cover; 92, flow guide; 93, filter cartridge; 94, support rod; 95, plugging block; 96, spring; 97, column rod; 98, sealing ring. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

[0029] To make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0030] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0031] A thick film liquid heater with two sets of independently controlled water paths according to an embodiment of the present application will be described below with reference to the drawings.

[0032] Please refer to Figures 1-7 A thick film liquid heater with two sets of independently controlled water paths according to an embodiment of the present application comprises a shell 1, a power interface part 3 and an electronic control module 4. The shell 1 is internally provided with an upper heating cavity 101 and a lower heating cavity 102 which are separated from each other. The upper heating cavity 101 is internally provided with an upper thick film heating element 5 for heating the internal cavity, and the shell 1 is externally provided with an upper water inlet 21 and an upper water outlet 22 which are in communication with the upper heating cavity 101. The lower heating cavity 102 is internally provided with a lower thick film heating element 6 for heating the internal cavity, and the shell 1 is externally provided with a lower water inlet 23 and a lower water outlet 24 which are in communication with the lower heating cavity 102. The power interface part 3 is installed in cooperation with the shell 1.

[0033] The thick film liquid heater with two sets of independently controlled water circuits has two sets of independent water circuit circulation systems inside the shell 1. The water source enters the upper heating cavity 101 and the lower heating cavity 102 in the two sets of water circuit systems through the upper water inlet 21 and the lower water inlet 23 respectively. The power interface part 3 is connected with the automobile power supply, and the upper thick film heating element 5 and the lower thick film heating element 6 are controlled by the electronic control module 4 to heat the fluid in the cavity, and the heated fluid flows out from the upper water outlet 22 and the lower water outlet 24 respectively.

[0034] The aluminum heat dissipation fin 7 is arranged at the bottom of the upper thick film heating element 5 and the top of the lower thick film heating element 6 to heat the fluid in the upper heating cavity 101 and the lower heating cavity 102. The upper heating cavity 101 and the lower heating cavity 102 are provided with a turbulent flow area 103 protruding from the bottom wall.

[0035] The aluminum heat dissipation fin 7 is arranged to improve the heat conduction efficiency of the upper thick film heating element 5 and the lower thick film heating element 6, so that the heat can be quickly conducted to the fluid to improve the fluid heating speed. The aluminum heat dissipation fin 7 is located in the turbulent flow area 103 of the heating cavity. According to Bernoulli equation, the flow rate is inversely proportional to the cross-sectional area of the cavity. When the fluid flows from the slow flow area on the side to the turbulent flow area 103, the aluminum heat dissipation fin 7 located in the turbulent flow area 103 has a faster flow rate, which can more quickly conduct the temperature in the aluminum heat dissipation fin 7 to the liquid, that is, has a better heating effect.

[0036] The impurity filtering assembly includes an end cover 91 and a filter cartridge 93. The filter cartridge 93 is provided with a column rod 97 and a supporting rod 94 at the mesh end. The other end of the column rod 97 is in sliding fit with the end cover 91. The column rod 97 is externally sleeved with a spring 96. The end cover 91 is provided with a flow guide opening 92 at the end face. The supporting rod 94 is provided with a plugging block 95 near one end close to the end cover 91.

[0037] The impurity filtering assembly is detachably installed inside the upper water inlet 21 and the lower water inlet 23. The impurities in the fluid are filtered out by the filter cartridge 93, and the fluid flows out into the heating cavity through the mesh holes at the bottom of the filter cartridge 93 and the flow guide openings 92 at the end surface of the end cover 91. When the filter cartridge 93 is blocked by too many impurities inside, the pressure inside the filter cartridge 93 is increased, the spring 96 is compressed, the blocking block 95 at the end of the supporting rod 94 is blocked inside the flow guide opening 92, and the entire pipeline is completely stopped. The corresponding sensor in the pipeline system senses the sudden stop of the pipeline flow rate, and the power supply is cut off at this time to stop heating. The flow pressure in the sealed space between the subsequent filter cartridge 93 and the end cover 91 continues to increase, the water pressure holds the blocking block 95 to pass through the flow guide opening 92 to complete the drainage, and the fluid inside the pipeline can flow slowly. The outer end surface of the end cover 91 is screwed and installed inside the upper water inlet 21 and the lower water inlet 23, which facilitates the disassembly and cleaning of the impurity filtering assembly.

[0038] The shell 1 plays a role in protecting the internal components and heat insulation, ensuring that heat can be effectively transferred to the liquid while reducing heat loss to the surrounding environment. Moreover, the two sets of water circuits share the same shell 1, which can save space and cost. The upper thick-film heating element 5 and the lower thick-film heating element 6 both use high-efficiency thick-film heating technology, which can quickly convert electrical energy into heat energy to provide heat for the flowing liquid.

[0039] In specific settings, the top of the upper heating cavity 101 and the bottom of the lower heating cavity 102 are respectively provided with an upper cover 11 and a bottom cover 12 that can be detached during installation and maintenance. The electronic control module 4 is installed inside the mounting groove at one end of the shell 1, and the end of the mounting groove is provided with a detachable rear cover 13. The upper cover 11, the bottom cover 12, and the rear cover 13 are all installed on the shell 1 by bolts, which facilitates the replacement and maintenance of the components inside the heater.

[0040] Furthermore, the power interface part 3 includes a low-voltage plug 31 and a high-voltage plug 32, which are installed in cooperation with the shell 1. The electronic control module 4 is installed on a separate structure that is not part of the shell 1. The electronic control module 4, the upper thick-film heating element 5, and the lower thick-film heating element 6 can be integrated and installed on the shell 1, or the electronic control module 4 can be installed separately without affecting the independent temperature control effect of the two sets of water circuits.

[0041] In specific settings, the bottom of the upper thick-film heating element 5 and the top of the lower thick-film heating element 6 are both provided with a sealing gasket 8, which is located outside the lower thick-film heating element 6. The sealing gasket 8 plays a good sealing role.

[0042] In the above specific embodiment, the sensor group is installed inside the upper water inlet 21, the upper water outlet 22, the lower water inlet 23 and the lower water outlet 24. The two sets of water paths share the same shell 1 and are equipped with the same electronic control module 4, so that the temperature, flow and heating power of the two sets of water paths can be accurately controlled simultaneously or separately. The liquid temperature and water flow speed of the inlet and outlet are monitored in real time through the sensor group, and the power output of the heating element is automatically adjusted according to the preset target temperature and actual working condition, so as to realize independent temperature control of the two sets of water paths.

[0043] The sealing ring 98 is arranged outside the tail end of the filter cartridge 93, and the sealing ring 98 is arranged to seal the gap between the filter cartridge 93 and the inner wall of the pipeline.

[0044] It should be noted that the specific model and specifications of the electronic control module 4, the power interface part 3 and the sensor group need to be selected and determined according to the actual specifications of the device, and the matching connection between the components and the specific selection calculation method adopt the existing technology in the art, so they will not be described in detail. The power supply and principle of the electronic control module 4, the power interface part 3 and the sensor group are clear to those skilled in the art, and will not be described in detail here.

[0045] The above only describes the embodiments of the present application and is not used to limit the protection scope of the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application. It should be noted that: similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0046] The above only describes the embodiments of the present application and is not used to limit the protection scope of the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application. It should be noted that: similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0046] The above only describes the embodiments of the present application and is not used to limit the protection scope of the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application. It should be noted that: similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

Claims

1. A thick film liquid heater having two independent water circuits, characterized in that, It includes: The shell (1), the power interface part (3) and the electronic control module (4), the upper heating cavity (101) and the lower heating cavity (102) are arranged in the shell (1) respectively, the upper thick film heating element (5) is installed in the upper heating cavity (101), the upper water inlet (21) and the upper water outlet (22) are arranged outside the shell (1) and communicated with the upper heating cavity (101), the lower thick film heating element (6) is installed in the lower heating cavity (102), and the lower water inlet (23) and the lower water outlet (24) are arranged outside the shell (1) and communicated with the lower heating cavity (102), the power interface part (3) is installed in cooperation with the shell (1); Aluminum heat dissipation fin (7), two groups of aluminum heat dissipation fin (7) are arranged at the bottom of the upper thick film heating element (5) and the top of the lower thick film heating element (6) respectively, and heat the fluid in the upper heating cavity (101) and the lower heating cavity (102), the upper heating cavity (101) and the lower heating cavity (102) are arranged with the turbulent zone (103) protruding from the bottom wall in the middle region; Impurity filtering assembly, the impurity filtering assembly includes end cover (91) and filter cartridge (93), the filter cartridge (93) is provided with column rod (97) and support rod (94) at the mesh end, the other end of the column rod (97) is in sliding fit with the end cover (91), the spring (96) is arranged outside the column rod (97), the end cover (91) is provided with flow guide port (92) on the end face, and the support rod (94) is provided with plugging block (95) matched with the flow guide port (92) at the end close to the end cover (91).

2. The thick film liquid heater having two sets of independently controlled water paths according to claim 1, wherein, The upper cover (11) and the bottom cover (12) are arranged at the top of the upper heating cavity (101) and the bottom of the lower heating cavity (102) respectively, which can be disassembled during installation and maintenance.

3. The thick film liquid heater having two sets of independently controlled water paths according to claim 1, wherein, The electronic control module (4) is installed in the mounting groove at one end of the shell (1), and the rear cover (13) is arranged at the end of the mounting groove.

4. The thick film liquid heater having two sets of independently controlled water paths according to claim 1, wherein, The power interface part (3) includes low-voltage plug-in part (31) and high-voltage plug-in part (32), and the low-voltage plug-in part (31) and the high-voltage plug-in part (32) are installed in cooperation with the shell (1).

5. The thick film liquid heater having two sets of independently controlled water paths according to claim 1, wherein, The bottom of the upper thick film heating element (5) and the top of the lower thick film heating element (6) are provided with sealing gaskets (8), and the sealing gaskets (8) are located outside the lower thick film heating element (6).

6. The thick film liquid heater having two sets of independently controlled water paths according to claim 1, wherein, The upper water inlet (21), the upper water outlet (22), the lower water inlet (23) and the lower water outlet (24) are internally provided with sensor groups.

7. The thick film liquid heater having two sets of independently controlled water paths according to claim 1, wherein, The electronic control module (4) is installed on the independent structure of the non-shell (1).

8. The thick film liquid heater having two sets of independently controlled water paths according to claim 1, wherein, The filter cartridge (93) is provided with a sealing ring (98) outside the tail end.

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