CN217504003U

CN217504003U - PTC liquid heater suitable for commercial car battery thermal management

Info

Publication number: CN217504003U
Application number: CN202221124990.6U
Authority: CN
Inventors: 张子刚; 朱金飞
Original assignee: Suzhou Yiwei Lianke Electronic Technology Co ltd
Current assignee: Suzhou Yiwei Lianke Electronic Technology Co ltd
Priority date: 2022-05-11
Filing date: 2022-05-11
Publication date: 2022-09-27
Anticipated expiration: 2032-05-11

Abstract

The utility model discloses a PTC liquid heater suitable for commercial car battery thermal management, which comprises an upper housing, lower casing, the heat-generating body, temperature control component, controller module, wiring row's subassembly, waterproof component and waterproof breather valve, the heat-generating body, temperature control component, controller module and wiring subassembly fixed mounting are internal at last casing and inferior valve, the one end of going up casing and casing down is provided with the inlet tube, the other end is provided with the outlet pipe, the one end of inlet tube is connected with the case of intaking, the one end of water tank is connected with the heat-generating body, the one end of heat-generating body is connected with the outlet box, the one end and the outlet pipe fixed connection of outlet box. The beneficial effects of the utility model are that, utilize extremely limited space, make up into the module more than two with the PTC module that generates heat, and generate heat and connect in a flexible way through the connecting row between the module, can realize generating heat the more nimble grouping of module to a plurality of PTC, divide into 6 groups with 18 modules that generate heat, both save space, improved the security of high-voltage line wiring again.

Description

PTC liquid heater suitable for thermal management of commercial vehicle battery

Technical Field

The utility model relates to a PTC water heater structure field, especially a PTC liquid heater suitable for commercial car battery thermal management.

Background

PTC liquid heater in the commercial car battery thermal management assembly, be used for heating the antifreeze in the battery box, under the low temperature condition, promote the antifreeze temperature to the uniform temperature point fast, make the battery be in the best charge or discharge temperature, be favorable to improving battery charge-discharge efficiency and extension battery life, current heater uses PWM's IGBT control or simple PTC heater, all be the structure that tiles, this kind of structure occupation space is very big, inconvenient integration is inside commercial car battery thermal management assembly, and the position of inlet outlet is at the homonymy, bigger space has been occupied, so current heater specifically has following defect to improve:

1. the occupied space is large, and the heat management device cannot be integrated in a commercial vehicle battery heat management assembly. The existing method is placed at the upper end or one side of a battery thermal management assembly, so that the integration degree of a battery thermal management assembly product is greatly reduced, certain defects exist in the aspect of anti-vibration performance, and the reliability of the whole battery thermal management system is influenced.

2. The self-integration is poor in compatibility. Although the configuration of the internal part of the controller is complete, the cost is higher, partial functions are overlapped with an assembly system, and certain obstacles are caused to further simplifying and upgrading the commercial vehicle battery thermal management assembly and integrating the controller.

3. PTC module length that generates heat is close with flat tub of length, but in battery thermal management's product, product length is greater than 400mm, and when the length was too long, the roughness of the module that generates heat was difficult to guarantee, probably because contact failure leads to faults such as striking sparks, puncture, causes the potential safety hazard.

4. Through the wiring or link together little wiring row with pencil or copper bar, have a lot of branch pencil like this, the pencil is mixed and disorderly, moreover because the space is more narrow and short-circuited, has great positive negative pole possibility that appears. Potential safety hazards exist.

5. The IGBTs are arranged in more than one row. However, because of a specific use scenario, the conventional single-row IGBT arrangement occupies a very large space.

6. The outlet end adopts a high-voltage or low-voltage connector, so that the product cost is high; or PG joints (waterproof flange joints) are used, but the PG joints occupy a large space and the waterproof effect is not desirable.

7. There are fixed mounting feet. The occupied space is large, and the heat pipe cannot be unfolded in a commercial vehicle heat management system.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem, a PTC liquid heater suitable for commercial car battery thermal management has been designed.

The technical proposal of the utility model is that the PTC liquid heater suitable for the heat management of the commercial vehicle battery comprises an upper shell, a lower shell, a heating element, a temperature control component, a controller component, a wiring row component, a waterproof component and a waterproof vent valve, the heating body, the temperature control component, the controller component and the wiring component are fixedly arranged in the upper shell and the lower shell, a waterproof silica gel ring is arranged at the joint of the upper shell and the lower shell, the upper shell and the lower shell are fixedly connected at the position of the fixing hole through a screw, one end of the upper shell and one end of the lower shell are provided with a water inlet pipe, the other end of the upper shell and the lower shell are provided with a water outlet pipe, one end of the water inlet pipe is connected with a water inlet tank, the one end of case of intaking is connected with the heat-generating body, the one end of heat-generating body is connected with out the water tank, go out the water tank one end with outlet pipe fixed connection.

As right the utility model discloses a further explanation, the heat-generating body is including the module one that generates heat, the module two that generates heat, the module three and the IGBT heating panel generate heat, the module one that generates heat, the module two that generates heat and the module three between be provided with the wiring row subassembly that generates heat, IGBT heating panel fixed mounting be in the side of case of intaking.

As right the utility model discloses a further explanation, the module that generates heat one, the module that generates heat two and the module that generates heat three by PTC generate heat the module and consolidate the panel beating subassembly and constitute, the one end of consolidating the panel beating subassembly is connected with the reinforcement panel beating apron.

As a further explanation of the present invention, the wiring board assembly between the water inlet tank and the first heating module is a large wiring board, and the large wiring board is connected with 4-12 PTC heating modules.

As a further explanation of the present invention, the first heating module and the wiring bar assembly between the second heating module are small wiring bars, and the small wiring bars are connected with 2-4 PTC heating modules.

As right the utility model discloses a further explanation, generate heat module two with the wiring row subassembly between the module three of generating heat is the sharing wiring row between the combination, be connected with 12 modules that generate heat on the sharing wiring row between the combination.

As right the utility model discloses a further explanation, it includes hydroecium and flat pipe to intake case and play water tank, flat pipe with the PTC module connection that generates heat, the IGBT heating panel is the aluminum alloy material, IGBT heating panel welding or screw fixation are in the hydroecium position of the case of intaking.

It is right as the utility model discloses a further explanation, temperature control assembly includes temperature sensor and temperature controller, temperature sensor and temperature controller fixed mounting be in go out the hydroecium side of water tank, the controller subassembly passes through screw fixed mounting and is in on the IGBT heating panel, the controller subassembly includes control scheme board and circuit board shell.

As right the utility model discloses a further explanation, waterproof component fixed mounting be in the kneck of inlet tube and outlet pipe on last casing and the lower casing, waterproof component includes waterproof stopper, waterproof clamp plate and waterproof silica gel circle, the one end of going up the casing still is provided with porous silica gel stopper.

As right the utility model discloses a further explanation, waterproof breather valve fixed mounting be in go up one side of casing, the upper and lower edge of casing bottom surface is provided with equidistant mounting hole down.

The PTC heating module grouping method has the advantages that 1, the extremely limited space is utilized, the PTC heating modules are combined into more than two modules, the heating modules are flexibly connected through the wiring row, more flexible grouping of the plurality of PTC heating modules can be achieved, and the 18 heating modules are divided into 6 groups. This has the advantage of saving space and improving the safety of the high-voltage line connection.

2. And locking the IGBT on the IGBT heat dissipation plate by using a combined screw. The liquid in the water inlet water chamber is used for cooling the IGBT, and meanwhile, the heat dissipated by the IGBT is recycled.

3. Divide into three groups of modules of partition with a plurality of PTC heating modules, can reduce the risk of striking sparks, drawing an arc, guarantee the roughness of PTC heating module. But also is more beneficial to the standardized production of the PTC heating module.

4. And maximally combining homopolarity. The design of the wiring row can share the positive electrodes or the negative electrodes of the plurality of PTC heating modules, so that the space and the material cost can be saved, and the flexible grouping of the PTC heating modules can be realized. Two or more PTC heating modules, even more than ten PTC heating modules can be connected together, and the connection efficiency and the safety are greatly improved.

Drawings

Fig. 1 is a schematic view of the structure of a state of the present invention;

fig. 2 is another structural view of the present invention;

fig. 3 is another structural diagram of the present invention;

FIG. 4 is a schematic view of the structure with the cover removed;

FIG. 5 is another schematic illustration of the structure with the cover removed;

FIG. 6 is a schematic view of the internal structure of the present invention;

fig. 7 is another schematic view of the interior of the present invention;

fig. 8 is another schematic view of the interior of the present invention;

FIG. 9 is a schematic view of the structure of the waterproof assembly at the water inlet;

FIG. 10 is a schematic view showing an arrangement structure of PTC sheets in the heat-generating body;

FIG. 11 is a schematic plan view of a heat-generating body grid;

fig. 12 is a schematic view of a vertical structure of the heater grid.

In the figure, 1, an upper shell; 2. a lower housing; 3. a heating element; 301. a first heating module; 302. a second heating module; 303. a third heating module; 304. IGBT heat dissipation plate; 305. a PTC heating module; 4. a temperature control assembly; 401. a temperature sensor; 402. a temperature controller; 5. a controller assembly; 501. a control circuit board; 502. a circuit board housing; 6. a terminal block assembly; 601. a large wiring bar; 602. a small wiring bar; 603. the combination shares the wiring row; 7. a waterproof assembly; 701. a waterproof pressing plate; 702. a waterproof silica gel ring; 703. a porous silica gel plug; 8. a water inlet pipe; 9. a water outlet pipe; 10. a water inlet tank; 11. a water outlet tank; 12. a water chamber; 13. reinforcing the metal plate component; 14. reinforcing the metal plate cover plate; 15. a waterproof vent valve; 16. mounting holes; 17. a fixing hole; 18. a PTC sheet; 19. a heater grid; 20. and (4) a groove.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings, as shown in fig. 1-9, a PTC liquid heater suitable for thermal management of commercial vehicle battery, the overall structure of the present invention is introduced first, comprising an upper casing 1, a lower casing 2, a heating element 3, a temperature control assembly 4, a controller assembly 5, a wiring row assembly 6, a waterproof assembly 7 and a waterproof vent valve 15, wherein the heating element 3, the temperature control assembly 4, the controller assembly 5 and the wiring assembly are fixedly mounted in the upper casing 1 and the lower casing 2, a waterproof silicone ring 702 is disposed at the junction of the upper casing 1 and the lower casing 2, the upper casing 1 and the lower casing 2 are fixedly connected at the fixing hole 17 by screws, a water inlet pipe 8 is disposed at one end of the upper casing 1 and the lower casing 2, a water outlet pipe 9 is disposed at the other end of the upper casing 1, a water inlet tank 10 is connected at one end of the water tank, and the heating element 3 is connected at one end of the water tank, one end of the heating body 3 is connected with a water outlet tank 11, and one end of the water outlet tank 11 is fixedly connected with the water outlet pipe 9.

Next, each component of the present invention will be described in detail.

The IGBT heat sink 304 is preferably made of an aluminum alloy. The IGBT heat dissipation plate 304 is welded or screwed on the position of the water chamber 12 of the water tank. The water tank comprises a water inlet and outlet, a water chamber 12 and flat pipes.

And the PTC heating module 305 is inserted between the flat pipes. A plurality of PTC heat generating modules 305 located in the same column may constitute one PTC heat generating module. The heating element 3 part includes 3 heating modules. Each heating module comprises 6 heating modules.

The wiring block assembly 6 comprises a wiring block insulating shell, a wiring block, screws and the like. The purpose of the terminal block is to connect the PTC heating module 305.

The utility model discloses utilize extremely limited space, make up into two or more modules with PTC generate heat module 305, and generate heat and arrange nimble connection through the wiring between the module, can realize generating heat the more nimble grouping of module 305 to a plurality of PTC, as shown in fig. 3, divide into 6 groups with 18 modules that generate heat. This has the advantage of saving space and improving the safety of the high-voltage line connection.

The reinforced metal plate component 13 is divided into a reinforced metal plate main body, a reinforced metal plate cover plate 14, a reinforced metal plate screw and other parts. Through rectangular shape hole site dislocation connection between reinforcement panel beating main part and the reinforcement panel beating apron 14, then make the installation foot of reinforcing panel beating main part warp with the instrument, drop when preventing to consolidate the vibrations of panel beating apron 14. Due to the adoption of the design structure, the space is saved.

The temperature control assembly 4 comprises a temperature controller 402 and a temperature sensor 401.

The controller assembly 5 includes a control circuit board 501, a circuit board case 502, and the like. The control wiring board 501 contains a square matrix arrangement of IGBTs.

The IGBT is locked to the IGBT heat sink 304 using a combination screw. The liquid in the inlet water chamber 12 is used for cooling the IGBT, and meanwhile, the heat dissipated by the IGBT is recycled.

The waterproof component 7 comprises a waterproof plug, a waterproof pressing plate 701 and a waterproof silica gel ring 702.

The waterproof plug of the water inlet and outlet penetrates through the water inlet and outlet, is installed on the aluminum shell, and is then pressed tightly by the waterproof pressing plate 701 to generate deformation, so that the waterproof effect is realized.

The plurality of PTC heating modules 305 are divided into three groups of modules which are equally divided, so that the risks of ignition and arc discharge can be reduced, and the flatness of the PTC heating modules 305 is ensured. But also facilitates the standardized production of the PTC heating module 305.

Maximally merging homopolarity. The design of the terminal block can share the positive electrodes or the negative electrodes of the plurality of PTC heating modules 305, so that the space and material cost can be saved, and the flexible grouping of the PTC heating modules 305 can be realized. Two or more, even more than ten PTC heating modules 305 can be connected together, greatly improving the connection efficiency and safety.

The IGBTs are arranged in multiple rows, so that the space occupied by the IGBTs can be effectively reduced, and the space utilization efficiency is greatly improved.

The porous waterproof plug structural design of outlet end both reduced cost improves water-proof effects again.

The mounting hole 16 is embedded at the bottom of the shell, so that the mounting space is greatly saved. .

As shown in FIG. 10, the PTC sheets 18 in the heating element were 20mm long and arranged in three rows. The large PTC sheet 18 has certain unreliability in voltage resistance, and the smaller PTC sheet 18 has better voltage resistance. And the heat productivity per unit area is improved; the voltage resistance effect is improved; the overall length dimension is smaller; the upper power limit of the heater can be increased.

As shown in fig. 11 and 12, the edge of the grid 19 at the periphery of the heating element 3 is flat without edge wrapping, so that the whole grid is more flat and straight, and the production efficiency is improved. And the grooves 20 are additionally arranged on the front surface and the back surface of the grating 19, so that the consumption of silica gel is reduced, and the cost is reduced.

The working principle is as follows: PTC heating module 305 and the flat pipe of case 10 and play water tank 11 of intaking distribute in parallel to receive the centre gripping of panel beating subassembly, both hug closely together, and heat transfer efficiency is higher. When the PTC heating module 305 is energized, the PTC heating module 305 heats water inside the flat pipe of the water tank to a specified temperature. The control principle of the heating is as follows: temperature information is fed back to the control circuit board 501 through the temperature sensing controller, the control circuit board 501 controls the heating power of the PTC electric heating sheet through the IGBT of the control circuit board 501 and the output voltage of the relay, when the temperature sensor 401 fails, the heater loses the temperature detection function, so that the added temperature controller 402 performs auxiliary temperature control, when the temperature sensor 401 fails, the temperature controller 402 is disconnected, the relay is disconnected, the high-voltage power supply is cut off, and the control of the high-voltage power supply under the failure state of the temperature sensor 401 is realized.

Above-mentioned technical scheme has only embodied the utility model discloses technical scheme's preferred technical scheme, some changes that this technical field's technical staff probably made to some parts wherein have all embodied the utility model discloses a principle belongs to within the protection scope of the utility model.

Claims

1. The PTC liquid heater suitable for commercial vehicle battery thermal management comprises an upper shell (1), a lower shell (2), a heating body (3), a temperature control assembly (4), a controller assembly (5), a wiring row assembly (6), a waterproof assembly (7) and a waterproof ventilation valve (15), and is characterized in that the heating body (3), the temperature control assembly (4), the controller assembly (5) and the wiring assembly are fixedly installed in the upper shell (1) and the lower shell (2), a waterproof silica gel ring (702) is arranged at the joint of the upper shell (1) and the lower shell (2), the upper shell (1) and the lower shell (2) are fixedly connected at the positions of fixing holes (17) through screws, a water inlet pipe (8) is arranged at one end of the upper shell (1) and the lower shell (2), a water outlet pipe (9) is arranged at the other end of the upper shell (1), and one end of the water inlet pipe (8) is connected with a water inlet box (10), the one end of case (10) of intaking is connected with heat-generating body (3), the one end of heat-generating body (3) is connected with out water tank (11), the one end of play water tank (11) with outlet pipe (9) fixed connection.

2. The PTC liquid heater suitable for commercial vehicle battery thermal management according to claim 1, wherein the heating body (3) comprises a first heating module (301), a second heating module (302), a third heating module (303) and an IGBT heat dissipation plate (304), a wiring row assembly (6) is arranged among the first heating module (301), the second heating module (302) and the third heating module (303), and the IGBT heat dissipation plate (304) is fixedly installed on the side surface of the water inlet tank (10).

3. The PTC liquid heater suitable for commercial vehicle battery thermal management according to claim 2, wherein the first heating module (301), the second heating module (302) and the third heating module (303) are composed of a PTC heating module (305) and a reinforced sheet metal component (13), and one end of the reinforced sheet metal component (13) is connected with a reinforced sheet metal cover plate (14).

4. A PTC liquid heater suitable for commercial vehicle battery thermal management according to claim 3, wherein the wiring bar assemblies (6) between the water inlet tank (10) and the first heating module (301) and between the water outlet tank (11) and the third heating module (303) are large wiring bars (601), and 4-12 PTC heating modules (305) are connected to the large wiring bars (601).

5. A PTC liquid heater suitable for commercial vehicle battery thermal management according to claim 3, wherein the wiring row assembly (6) between the first heating module (301) and the second heating module (302) is a small wiring row (602), and 2-4 PTC heating modules (305) are connected to the small wiring row (602).

6. The PTC liquid heater suitable for commercial vehicle battery thermal management according to claim 3, wherein the wiring bar assembly (6) between the second heating module (302) and the third heating module (303) is a combined common wiring bar (603), and 12 heating modules are connected to the combined common wiring bar (603).

7. The PTC liquid heater suitable for commercial vehicle battery thermal management according to claim 3, wherein the water inlet tank (10) and the water outlet tank (11) comprise a water chamber (12) and flat pipes, the flat pipes are connected with the PTC heating module (305), the IGBT heat dissipation plate (304) is made of aluminum alloy, and the IGBT heat dissipation plate (304) is welded or screwed in the position of the water chamber (12) of the water inlet tank (10).

8. The PTC liquid heater suitable for commercial vehicle battery thermal management according to claim 7, wherein the temperature control assembly (4) comprises a temperature sensor (401) and a temperature controller (402), the temperature sensor (401) and the temperature controller (402) are fixedly installed on the side surface of the water chamber (12) of the water outlet tank (11), the controller assembly (5) is fixedly installed on the IGBT heat dissipation plate (304) through screws, and the controller assembly (5) comprises a control circuit board (501) and a circuit board housing (502).

9. The PTC liquid heater suitable for commercial vehicle battery thermal management according to claim 1, wherein the waterproof assembly (7) is fixedly installed at the interface of the water inlet pipe (8) and the water outlet pipe (9) on the upper shell (1) and the lower shell (2), the waterproof assembly (7) comprises a waterproof plug, a waterproof pressing plate (701) and a waterproof silica gel ring (702), and one end of the upper shell (1) is further provided with a porous silica gel plug (703); the waterproof ventilation valve (15) is fixedly installed on one side of the upper shell (1), and mounting holes (16) which are arranged at equal intervals are formed in the upper edge and the lower edge of the bottom surface of the lower shell (2).

10. The PTC liquid heater suitable for thermal management of commercial vehicle batteries according to claim 1, wherein the PTC sheets (18) in the heat-generating body (3) are 20mm long and arranged in three rows; the edge of a grating (19) on the periphery of the heating body (3) is smooth, and a plurality of grooves (20) are formed in the front surface and the back surface of the grating (19).