阅读说明：本技术 一种减少流体阻力的ptc加热水槽装置 (PTC heating water tank device capable of reducing fluid resistance ) 是由 孙奈 崔玮康 于 2020-11-25 设计创作，主要内容包括：一种减少流体阻力的PTC加热水槽装置,具体涉及新能源汽车电池包加热。本发明装置包括水槽主体、入水口导流装置、出水口导流装置、变向导流装置、PTC发热主体、密封垫片和锁紧固件。本发明通过在水槽主体内增加入水口导流装置,出水口导流装置和变向导流装置,构成液体流道,一方面可减少流体在水槽内的流阻,另一方面,这一专用液体流道采取分层布局方式,在水槽几何尺寸或者体积一定的情况下,可增加流道数量来增加PTC发热片数量,从而增加发热器的功率。(A PTC heating water tank device capable of reducing fluid resistance, and particularly relates to heating of a new energy automobile battery pack. The device comprises a water tank main body, a water inlet flow guide device, a water outlet flow guide device, a diversion flow guide device, a PTC heating main body, a sealing gasket and a locking fastener. According to the invention, the water inlet flow guide device, the water outlet flow guide device and the diversion flow guide device are additionally arranged in the water tank main body to form the liquid flow channel, so that on one hand, the flow resistance of fluid in the water tank can be reduced, and on the other hand, the special liquid flow channel adopts a layered layout mode, and under the condition that the geometric size or the volume of the water tank is fixed, the number of the flow channels can be increased to increase the number of the PTC heating sheets, thereby increasing the power of the heater.)

1. A PTC water heating tank device capable of reducing fluid resistance comprises a tank main body, a water inlet flow guide device, an outlet flow guide device, a diversion flow guide device, a PTC heating main body, a sealing gasket and a locking fastener; it is characterized in that a water inlet flow guide device, a water outlet flow guide device, a diversion flow guide device and a PTC heating main body are arranged in the water tank main body to form a plurality of layered flow channels.

2. The sink body as recited in claim 1, having a water inlet, a water outlet, and a sink body housing, wherein: the water inlet and the water outlet are both streamline cavity wall characteristics, and the streamline is formed by smoothly connecting a concave arc section and a convex arc section.

3. The utility model discloses a water inlet guiding device and delivery port guiding device of claim 1, both include the runner of water conservancy diversion spoke and constitute by water conservancy diversion spoke, characterized by: the water inlet guide spoke and the water outlet guide spoke are both provided with arc-shaped knife edges which are characterized by thin front and thick rear.

4. The utility model discloses a water inlet guiding device and delivery port guiding device of claim 1, both include the runner of water conservancy diversion spoke and constitute by water conservancy diversion spoke, characterized by: the water inlet guide spoke and the water outlet guide spoke are both characterized by front and back layering, and the flow channel formed by the front and back layering features is characterized in that the number of flow channels close to the water inlet and the water outlet is small, and the number of flow channels far away from the water inlet and the water outlet is increased.

5. The water inlet convex arc segment according to claim 2 or 3 forming a connection with water inlet guide spokes, wherein: the convex arc section of the water inlet is tangent to the arc-shaped lower edge of the water inlet diversion spoke knife edge to form a non-acute angle characteristic; the convex arc section of the water outlet is tangent to the arc lower edge of the water outlet diversion spoke knife edge to form a non-acute angle characteristic.

6. A PTC water heating tank device with reduced fluid resistance according to claim 1, wherein: the diversion guide device guide spokes, the water inlet guide spokes and the water outlet guide spokes are provided with a front female and rear male butt joint structure along the fluid flowing direction.

7. A PTC water heating tank device with reduced fluid resistance according to claim 1, wherein: the diversion spokes of the diversion flow guide device form a special diversion flow channel, the cross section area of the flow channel at the middle position of the sink main body is larger, the outer side is smaller than the secondary outer side, the secondary outer side is smaller than the middle part, the middle part is smaller than the secondary inner side, the secondary inner side is smaller than the inner side, and the like.

8. Wherein, we define the inner side near the middle of the water tank main body.

9. A PTC water heating tank device with reduced fluid resistance according to claim 1, wherein: the heating sheets on the PTC heating main body are staggered and layered in front and back.

Technical Field

The invention relates to the technical field of automobile parts, in particular to a heating water tank device for a new energy automobile.

Background

The global oil reserves are limited and, if continued at the present consumption levels, the global oil is not sufficient for human consumption for 50 years, while automobiles consume a significant portion of the oil production each year. On the other hand, when the automobile consumes petroleum, a large amount of toxic and harmful gas is discharged into the atmosphere, and the atmospheric environment and the life health of people are seriously affected, so that the automobile industry urgently needs to adopt renewable energy technology and clean energy technology as soon as possible.

The new energy electric automobile adopts electric drive, abandons petroleum fuel drive, and has incomparable advantages compared with a fuel oil automobile in the aspects of energy conservation and emission reduction and reduction of dependence of human beings on traditional fossil energy.

Most of new energy electric automobiles use lithium batteries as power sources, and the lithium batteries are electrochemical devices and have the action based on certain temperature conditions (normal working temperature is 20 ℃ below zero to 60 ℃ above zero). Under low temperature conditions, lithium batteries, whether charged/discharged, wear on the electrodes, and also affect the storage capacity and service life of the battery. In order to solve the above problems, it is common practice in the electric vehicle industry to perform effective thermal management on the battery pack.

In northern areas of China, extremely cold weather at a temperature of less than 35 ℃ below zero is available every year, and when a vehicle is started or used in the extremely cold weather, the battery is extremely damaged, so that the electric vehicle needs to be preheated before being started. And the long preheating time consumes the patience of the user, and the user naturally prefers to preheat more quickly and efficiently to reach the lowest working temperature as soon as possible (the working temperature of the conventional lithium battery is from minus 20 ℃ to minus 60 ℃), so that the automobile can be on the road as soon as possible. The common practice of the heaters in the market at present is to increase the flow resistance, so that the liquid stays in the heater for a certain time, and is conducted to the battery pack for heat exchange after reaching a certain temperature. We believe that under the same heater power and ambient temperature conditions, the flow resistance should be reduced instead, so that the heater delivers as much heat per unit time as possible (= Δ Q/. DELTA.t), thereby maximizing the speed at which the battery pack reaches the lowest operating temperature condition.

Disclosure of Invention

The invention mainly solves the technical problem of providing a PTC heating water tank device for reducing fluid resistance.

In order to achieve the purpose, the invention adopts the following technical scheme:

a PTC water heating tank device capable of reducing fluid resistance comprises a tank main body 1, a water inlet flow guide device 2, a water outlet flow guide device 3, a diversion flow guide device 4, a PTC heating main body 5, a sealing gasket 6 and a locking fastener 7.

The water tank main body comprises a water tank water inlet pipe 1a, a water outlet pipe 1b, a water inlet joint 1c and a water outlet joint 1d, and a main body shell 1 e.

The water inlet guide device 2 comprises water inlet guide spokes 2a, a flow passage 2b formed by the water inlet guide spokes and the water tank, and a flow passage 2c formed by the guide spokes.

The water outlet flow guiding device 3 comprises a water outlet flow guiding spoke 3a, a flow channel 3b formed by the water outlet flow guiding spoke and the water tank, and a flow channel 3c formed by the flow guiding spoke.

The diversion and flow guiding device 4 comprises diversion and flow guiding spokes 4f, a flow channel inner side flow channel 4a, a 4 b-time inner side flow channel, a 4c middle flow channel, a 4 d-time outer side flow channel and a 4e outer side flow channel formed by the diversion and flow guiding spokes and the water tank main body shell. Wherein, we define the inside near the inside of the sink body as the inside.

The PTC heating main body 5 comprises PTC heating main body guide spokes 5a, a sealing gasket clamping groove 5b, a PTC heating sheet clamping groove 5c and a PTC heating cover plate 5 d.

Preferably, the water inlet 1a and the water outlet 1b are both streamlined cavity wall features and are formed by convex arc sections 11a and 11b and concave arc sections 12a and 12b (see fig. 3), and the design can avoid generating vortex at the positions, thereby reducing flow resistance and enabling fluid to flow into the sink body from the water inlet and flow out of the sink body from the water outlet more smoothly.

Preferably, the water inlet guide spokes 2a, 2b and the water outlet guide spokes 3a, 3b each have an edge feature 21, 31 that is thin at the front and thick at the back (see fig. 4 and 5). When passing through the knife edge, the fluid can smoothly flow through the rear section of the knife edge from the front end of the knife edge, so that the contact area of the fluid and the front surface of the guide spoke is effectively reduced, and the flow resistance is reduced.

Preferably, the water inlet guide spokes 2a, 2b and the water outlet guide spokes 3a, 3b are designed into a front-rear layered structure (see fig. 6); the structure forms a layered runner with controllable sectional area of the opening part, and is characterized in that the quantity of runners close to the water inlet and the water outlet is small, and the quantity of runners far away from the water inlet and the water outlet is increased.

Preferably, the convex arc section 11a of the water inlet and the guide spoke knife-edge arc 21a of the water inlet form a special non-acute angle feature 22 (see fig. 7), which can reduce the deposition and accumulation of foreign matters (such as filiform matters or fibrous matters) and impurities in the fluid at the inlet, avoid the formation of small turbulence or vortex in the narrowest area of the flow passage, and reduce the fluid resistance.

Preferably, the diversion guide spokes 4f, the water inlet guide spokes 2a and 2b and the water outlet guide spokes 3a and 3b form a special butt joint structure (see fig. 8), and the structure has directional directivity, and is front-female-rear-male along the water flow direction. Compared with other structures, the front, female and male structures can reduce the contact area of the fluid and the gap at the butt joint; even if a gap appears at the butt joint structure of the male and female parts along with the lapse of service time, the structure can reduce the contact area of the fluid and the butt joint gap as much as possible, and reduce the generation of vortex, thereby reducing the fluid resistance.

Preferably, the diversion and flow guide device is provided with fluid diversion and flow guide spokes to form a 4a inner flow passage, a 4 b-time inner flow passage, a 4c middle flow passage and a 4 d-time outer flow passage, and a 4e outer flow passage is formed by the diversion and flow guide device and the water tank main body shell. The flow resistance of the water tank is larger closer to the inner side of the water tank body, the flow channels are required to be designed to be wider, and the cross-sectional area relation among the flow channels is 4a >4b >4c >4d >4e (see fig. 9). Wherein, we define the inside near the inside of the sink body as the inside. The flow channel design can avoid the vortex phenomenon generated by the fluid at the inner side or the secondary inner side to the maximum extent and reduce the flow resistance.

Preferably, the PTC heating body 51 is fitted with the water inlet guide spokes 2a, 2b and the water outlet guide spokes 3a, 3b, and also has a layered structure, and the heating sheets are staggered back and forth (see fig. 10). The layered structure can increase the number of the heating sheets as much as possible under the condition that the volume of the heater is fixed so as to increase the power of the heater.

The invention has small device volume and can be matched with different types of electric automobiles; streamline cavity wall characteristics, guide spokes and knife edge designs on the spokes can reduce fluid resistance and improve heat exchange efficiency; the male and female butt joint structure and the non-acute angle characteristic can improve the heat conduction performance of the water tank and the service life of the water tank; the heating sheets are arranged in a staggered manner from front to back, so that the power of the heater can be increased under the condition of small volume.

Drawings

FIG. 1: explosion diagram of PTC heating water tank structure

1: the water tank main body 2: water inlet guide spokes 3: water outlet diversion spoke

4: turning guide spokes 5: PTC heating main body 6: sealing gasket

7: locking fastener

FIG. 2: detail view of water tank body

1 a: water inlet pipe 1 b: water outlet pipe 1 c: water inlet joint

1 d: water outlet joint 1 e: water tank main body shell

FIG. 3: detailed drawing of water inlet and outlet chamber wall features

11a convex arc feature of water inlet 11b concave arc feature of water inlet

12a, water outlet convex arc-shaped characteristic 12 b: concave arc feature of water outlet

FIG. 4: detail drawing of water inlet guide spoke knife edge characteristics

21: water inlet guide spoke knife edge

FIG. 5: detail drawing of water outlet diversion spoke knife edge characteristics

31 diversion spoke knife edge of water outlet

FIG. 6 is a detailed view of the inlet and outlet diversion devices

2 a: water inlet guide spokes 2 b: flow passage formed by water inlet guide spoke and water tank

2 c: flow channel 3a formed by guide spokes: water outlet diversion spoke

3 b: flow passage formed by water outlet diversion spoke and water tank

FIG. 7: detail view of non-acute features

11 a: water inlet convex arc feature 21 a: water inlet guide spoke knife edge arc shape characteristic

FIG. 8: detail drawing of male-female butt joint structure

a: male pair of interfaces b: female butt joint

FIG. 9: detail drawing of direction-changing flow-guiding device

1 e: water tank main body case 4 a: inner flow passage 4 b: secondary inner runner

4 c: middle flow passage 4 d: secondary outer flow path 4 e: outer side flow passage

4 f: diversion guide spoke

FIG. 10: detailed view of PTC heating body

5 a: PTC heating main body guide spokes 5 b: seal gasket draw-in groove

5 c: PTC heating sheet clamping groove 5 d: PTC heating cover plate

FIG. 11: fixing mode of flow guide device and water tank main body

1: the water tank main body 2: water inlet deflector 3: water outlet flow guiding device

4: diversion flow guide device

FIG. 12: example 1

1 a: water inlet pipe 1 b: a water outlet pipe 2: water inlet flow guiding device

3: water outlet flow guiding device 4: diversion flow guide device

FIG. 13: example 2

61: water inlet pipe 62: water outlet pipe 63: water inlet flow guiding device

64: water outlet flow guiding device

FIG. 14 practical example 3

71: water inlet pipe 72: water outlet pipe 73: water inlet flow guiding device

74: water outlet flow guide device 75: diversion flow guide device

Detailed Description

The technical embodiments of the present invention are further described by the detailed description below with reference to the accompanying drawings.

As shown in fig. 1, a PTC water heating tank device for reducing fluid resistance includes a tank body 1, a water inlet flow guide device 2, a water outlet flow guide device 3, a diversion flow guide device 4, a PTC heating body 5, a sealing gasket 6 and a locking fastener 7.

The sink body 1 as shown in fig. 2 can be formed by a one-time mold or machined, and the water inlet pipe and the water outlet pipe can be connected and assembled with the sink body housing by welding or locking screws.

The water inlet flow guide device 2, the water outlet flow guide device 3 and the diversion flow guide device 4 are made of materials such as an aluminum casting, a plastic part, a stainless steel part, copper, ceramics and the like which are formed at one time. The bottoms of the two parts are provided with bases which are fixedly arranged with the water tank body 1 in a buckling locking mode (as shown in figure 11)

The PTC heating main body 5 is integrally formed or manufactured in a machining and assembling mode, and installation positions of a heating sheet and a sealing gasket are reserved.

When the water tank device is installed, the sealing gasket 6 is firstly arranged in the PTC heating main body 5, then the PTC heating main body 5 is pressed downwards, and the PTC heating main body and the water tank main body are attached together in a buckling or clamping manner to form the sealed water tank device.

Example 1:

as shown in fig. 12, the water inlet and the water outlet are located on the same side of the water tank body, the water inlet joint 1c is connected to the water pipe at the water pump end of the automobile, and the water outlet joint 1d is connected to the water pipe at the battery pack end. The water inlet flow guiding device 2 is connected with the front end of a PTC heating main body flow guiding spoke, and the rear end of the PTC heating main body flow guiding spoke is connected with the front end of a diversion flow guiding device 4; the rear end of the diversion flow guide device 4 is connected with the water outlet flow guide device 3. This design allows for 180 degree turning of the liquid.

Example 2:

as shown in fig. 13, a water inlet joint 61 and a water outlet joint 62 are respectively arranged on the opposite sides of the water tank body, the water inlet joint 61 is connected with a water pipe at the water pump end of the automobile, and the water outlet joint 62 is connected with a water pipe at the battery pack end. The water inlet flow guiding device 63 and the water outlet flow guiding device 64 are directly connected with the heating main body flow guiding device, and liquid directly flows out of the water outlet after flowing through the heating main body flow guiding device from the water inlet without a direction-changing flow guiding device.

Example 3:

as shown in fig. 14, the water inlet and outlet are distributed on the water tank body at 90 degrees, the water inlet joint 71 is connected with the water pipe at the water pump end of the automobile, and the water outlet joint 72 is connected with the water pipe at the battery pack end. The water inlet flow guiding device 73 is connected with the front end of the PTC heating main body flow guiding spoke, and the rear end of the PTC heating main body flow guiding spoke is connected with the front end of the direction-changing flow guiding device 75; the rear end of the diversion flow guide device 75 is connected with a water outlet flow guide 74 device. The structural design can realize 90-degree direction change.

It should be noted that the above-mentioned embodiments and examples are only preferred embodiments of the present invention and the technical principles used, and any changes or substitutions which can be easily made by those skilled in the art within the technical scope of the present invention disclosed by the present invention should be covered within the protective scope of the present invention.