CN212625788U

CN212625788U - Injection type battery heat preservation device

Info

Publication number: CN212625788U
Application number: CN202021666781.5U
Authority: CN
Inventors: 沈建玉
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-08-12
Filing date: 2020-08-12
Publication date: 2021-02-26
Anticipated expiration: 2030-08-12

Abstract

The utility model discloses an injection type battery heat preservation device, which comprises a battery heat preservation sleeve, a motor shell and an injection tube; the wall of the motor shell is hollow, the upper portion of the motor shell is communicated with the injection pipe, the lower portion of the motor shell is communicated with the battery heat insulation sleeve, the battery heat insulation sleeve wraps outside the battery pack, medium liquid can be pumped out of the battery heat insulation sleeve by the injection pipe when an automobile runs, heat generated when the motor works is absorbed, water in the motor shell flows back to the battery heat insulation sleeve after the automobile stops and is powered off, the battery pack is insulated, the battery pack can be enabled not to be in a low-temperature state when being started next time, the endurance mileage of the electric vehicle in winter is improved, and remarkable technical progress is achieved in the field.

Description

Injection type battery heat preservation device

Technical Field

The utility model belongs to the motor especially relates to a can carry out heat retaining motor housing to electric motor car battery.

Background

The endurance of the electric automobile can be reduced in winter because the change of the environment affects the chemical reaction result of the lithium battery. The lithium battery is internally composed of a positive electrode, a negative electrode and electrolyte between the positive electrode and the negative electrode. When the battery discharges, lithium ions are separated out from the negative electrode through chemical reaction and move to the positive electrode through the dielectric medium, at the moment, the positive electrode is in a lithium-rich state, the negative electrode is in a lithium-poor state, and in the process of lithium ion activity, generated electrons move to generate current. However, at too low a temperature, the chemical reaction speed of the lithium battery is slow. Therefore, the discharged current becomes small, and the capacity of the battery becomes small. In other words, during the process of releasing current, the lithium battery needs to generate a series of chemical reaction temperature drops, the chemical reaction rate also drops, the power output of the battery is correspondingly reduced, and if the temperature rises, the opposite is true, so that the temperature has the greatest influence on the charging and discharging performance of the battery among all the environmental factors.

Disclosure of Invention

In order to solve the problem that the cruising ability of the electric automobile is reduced in a low-temperature environment, the utility model provides an injection type battery heat preservation device, which comprises a battery heat preservation sleeve, a motor shell and an injection pipe, wherein the wall and the upper and lower surfaces of the motor shell are provided with cavities, the battery heat preservation sleeve wraps the outside of a battery pack and comprises an inner side surface, a cavity and an outer side surface which are attached to the battery pack, and the cavity is communicated with the cavity at the lower part of the motor shell through a connecting pipe; one end of the injection tube is provided with a pushing device, the pushing device is fixed with one end of a piston through a push rod and pushes the piston to reciprocate in the injection tube, and the other end of the injection tube is communicated with a cavity at the upper part of the motor shell; the battery thermal insulation sleeve is made of soft materials; the motor shell is also provided with a water filling port, a water outlet and a corresponding cover, and the water level in the cavity is equal to the top of the motor shell.

Preferably, the injection tube is provided with a hole or a notch for ventilation at the position close to the ejector, and the inner wall of the injection tube at the position close to the ejector is also provided with a limit baffle.

Preferably, one end of the connecting pipe comprises an inner pipe and an outer pipe, the inner pipe is fixed to the inner side face, a sealing plate is arranged on the inner side of the inner pipe, the outer pipe is fixed to the outer side face, and the outer pipe is connected with the inner pipe through a plurality of supporting rods.

Preferably, the other end of the connecting pipe is provided with an electromagnetic valve, a closing key of the electromagnetic valve is fixed on the limit baffle, and an opening key and a switch of the ejection device are respectively arranged on the automobile control panel.

Preferably, the battery heat-insulating sleeve is made of rubber, and the outer side surface of the battery heat-insulating sleeve is provided with a heat-insulating coating.

Preferably, the electric heating insulation sleeve is far away from one end of the connecting pipe, the upper surface and the lower surface of the electric heating insulation sleeve are provided with convex edges and concave edges, and the protruding sections and the concave sections of the electric heating insulation sleeve are trapezoidal, so that a sealing edge and pressing strip structure is formed.

Preferably, the ejection device is one of a servo motor, a stepping motor, a cylinder and a hydraulic cylinder.

Preferably, a water level observation window is arranged at the upper part of one side surface of the motor shell.

Preferably, the included angle between the injection tube and the horizontal plane is 0-15 degrees.

Preferably, the volume of the tube side of the injection tube is equal to the volume of the cavity in a natural state.

The utility model discloses a function includes two states, when the one of which is the car and starts, medium liquid in the injection syringe with it inhales to being full of cavity and injection syringe, the solenoid valve closing key is touched to the piston, the solenoid valve is the closed condition, the heat that the motor gived off is stored in medium liquid, its two when stopping the operation for the car, the driver presses the car and controls the solenoid valve on the panel and open the key and the switch of ejector device, the ejector device pushes the medium liquid of high temperature to the battery insulation cover in, keep warm to the battery, prevent that battery temperature from crossing low messenger's electric capacity descends, there is apparent technological progress in this field.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of a battery insulating sleeve and a connecting pipe.

Detailed Description

Example 1

As shown in fig. 1 and 2, the injection type battery thermal insulation device of the present invention includes a battery thermal insulation sleeve 103, a motor casing 101, and an injection tube 102, wherein a cavity 114 is formed on the wall and the upper and lower surfaces of the motor casing 101, the battery thermal insulation sleeve 103 wraps the outside of the battery pack 112, and includes an inner side surface 205, a cavity 204, and an outer side surface 203 attached to the battery pack 112, and the cavity 204 communicates with the cavity 114 at the lower portion of the motor casing 101 through a connection tube 110; one end of the injection tube 102 is provided with a pushing device 108, the pushing device 108 is fixed with one end of a piston 107 through a push rod, the piston 107 is pushed to reciprocate in the injection tube 102, and the other end of the injection tube 102 is communicated with a cavity 114 at the upper part of the motor housing 101; the battery thermal insulation sleeve 103 is made of soft materials; the motor housing 101 is also provided with a water filling port 104, a water outlet 105 and a corresponding cover, and the water level in the cavity 114 is equal to the top of the motor housing 101.

In more detail, the syringe 102 has a notch 116 for venting air near the ejector 108, and the syringe 102 has a limit stop 109 on its inner wall near the ejector 108.

More in detail, connecting pipe 110 one end includes inner tube 208, outer tube 207, inner tube 208 with medial surface 205 is fixed and there is a shrouding 209 inner tube inboard, outer tube 207 with lateral surface 203 is fixed, and its fixed mode is for adopting high temperature resistant glue to bond, outer tube 207 is connected through a plurality of bracing pieces 206 with inner tube 208.

In more detail, the electromagnetic valve 106 is installed at the other end of the connecting pipe 110, a close key 115 of the electromagnetic valve 106 is fixed on the limit baffle 109, and an open key and a switch of the ejector 108 are respectively installed on the automobile control panel.

In more detail, the battery thermal insulation sleeve 103 is made of rubber, and the outer side surface 203 and the outer surface of the motor shell 101 are both provided with thermal insulation coatings.

More specifically, the electric heating insulation sleeve is far away from one end of the connecting pipe 110, the upper surface and the lower surface of the electric heating insulation sleeve are provided with a convex edge 201 and a concave edge 202, and the protruding sections and the concave sections of the electric heating insulation sleeve are trapezoidal, so that a sealing edge and pressing strip structure is formed.

In more detail, the pushing device 108 is a stepping motor.

In more detail, a water level observation window 113 is provided at an upper portion of one side surface of the motor housing 101.

In more detail, the syringe 102 is angled 0 ° from horizontal.

In more detail, the volume of the tube side of the syringe 102 is equal to the volume of the cavity 204 in the natural state.

When the device is installed, the battery heat-insulating sleeve 103 is required to be sleeved outside the battery pack, then one end with a pressing strip structure is pressed and sealed, the connecting pipe 110, the injection pipe 102 and the motor shell 101 can be connected through a set of threads and can also be connected through a connecting piece such as a rotary joint and the like, the control of the device mainly comprises the control of the electromagnetic valve 106 and the control of the ejection device 108, wherein the controller of the stepping motor is connected to a vehicle control panel to be controlled by the vehicle control panel, the electromagnetic valve 106 can be accurately closed when the piston 107 completely abuts against the limit baffle 109, the limit baffle 106 is provided with a closing key 115 of the electromagnetic valve, when the piston 107 abuts against the limit baffle 109, the key is triggered to close the electromagnetic valve to avoid medium backflow, the opening key of the electromagnetic valve 106 must be started by the vehicle control panel, otherwise, the medium cannot normally flow back into the battery heat-insulating sleeve when, in addition, since the control panel of the vehicle is various in hardware and software, the need to add control to the solenoid valve 106 and the ejector 108 does not present technical obstacles for those skilled in the art, how to connect the wires, how to set software is not within the scope of the present invention, and is not described herein.

In addition, because the battery thermal insulation sleeve has two states of a cavity with a medium and a cavity without a medium, only a soft thermal insulation material is adopted, and the shell of the motor can be made of the same material as the battery thermal insulation sleeve and can also be made of the same hard material as an injection tube and a connecting tube.

Example 2

The technical effect that the scheme can achieve is proved that the device and the medium liquid contained in the device have certain weight, when the device operates, the weight of the electric vehicle can be increased and more work can be done, so the effect can not be judged only by the heat preservation effect of the detection device on the battery, the most intuitive gain or reduction of the vehicle endurance capacity can be used for judging, a certain brand of electric vehicle and the brand of electric vehicle added with the device (the medium is added with 30% of glycol solution) are respectively used as a comparison group 1 and a comparison group 2, after the vehicle of the comparison group 2 is driven for 1-2 hours and is charged quickly, the medium liquid is pushed into a battery heat preservation sleeve, the vehicles of the comparison group 2 and the comparison group 1 are stopped at one position, and after 6 hours, the endurance test is carried out, and the two vehicles have the same vehicle condition: the method is characterized in that the method comprises the following steps that a full-electricity state and an air conditioner are started to 24 ℃, two vehicles run in parallel or are the same as the vehicle and a person, the vehicle runs and the driving mileage is recorded under various temperature conditions in the city, the visual embodiment is facilitated, the measured driving mileage of a control group 1 is set to be 1, the control group 2 and the control group 1 are divided to obtain the mileage of the control group 2, and the detection parameters are as follows:

temperature group	-15℃	-10℃	-8℃	-3℃	0℃	2℃	10℃	15℃
									Control group 1	1	1	1	1	1	1	1	1
Control group 2	0.95	1.1	1.15	1.18	1.16	1.13	1.08	1.03

The above table shows that the electric vehicle with the device is above-10 ℃, the endurance of the pure electric vehicle which is started after long-time parking in winter is obviously improved, the lifting proportion of the electric vehicle is in the trend of rising first and then falling, the principle of the electric vehicle is that the endurance mileage of the control group 1 is obviously improved along with the rise of the temperature, the heat preservation effect of the device on the battery becomes less necessary, and the original endurance mileage is influenced by the excessive weight.

Based on the control group, the parking time of the control group 2 is only prolonged to 10 hours, and the control group 3 is used as the control group 3, and the detection parameters of the control group 1 and the control group 3 are as follows:

temperature group	-15℃	-10℃	-8℃	-3℃	0℃	2℃	10℃	15℃
									Control group 1	1	1	1	1	1	1	1	1
Control group 3	0.93	1.03	1.05	1.08	1.1	1.07	1.03	1

It can be seen from the above table that the longer the device is parked outdoors, the smaller the effect of the device on increasing the endurance mileage, and the endurance mileage of the comparison group 3 is inferior to that of the comparison group 2 under various temperature conditions, because the battery is closer to the external environment temperature due to more heat dissipation.

In conclusion, when the electric automobile provided with the device is parked for 6-10 hours at the temperature of-10 ℃ to 15 ℃, the endurance mileage of the electric automobile is improved to different degrees, the endurance mileage is reduced when the temperature exceeds the temperature range or the electric automobile is parked for a longer time than the electric automobile without the device, and the device can be detached under the condition of no efficiency increase.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An injection type battery heat preservation device which characterized in that: the battery heat-insulation sleeve wraps the outside of the battery pack and comprises an inner side surface, a cavity and an outer side surface which are attached to the battery pack, and the cavity is communicated with the cavity at the lower part of the motor shell through a connecting pipe; one end of the injection tube is provided with a pushing device, the pushing device is fixed with one end of a piston through a push rod and pushes the piston to reciprocate in the injection tube, and the other end of the injection tube is communicated with a cavity at the upper part of the motor shell; the battery thermal insulation sleeve is made of soft materials; the motor shell is also provided with a water filling port, a water outlet and a corresponding cover, and the water level in the cavity is equal to the top of the motor shell.

2. The injection-type battery thermal insulation device according to claim 1, wherein: the injection tube is provided with a hole or a notch for ventilation at the position close to the ejector, and the inner wall of the injection tube is also provided with a limit baffle at the position close to the ejector.

3. The injection-type battery thermal insulation device according to claim 2, wherein: the connecting pipe one end includes inner tube, outer tube, the inner tube with the medial surface is fixed and there is the shrouding inner tube inboard, the outer tube with the lateral surface is fixed, the outer tube is connected through a plurality of bracing pieces with the inner tube.

4. The injection-type battery thermal insulation device according to claim 3, wherein: the other end of the connecting pipe is provided with an electromagnetic valve, a closing key of the electromagnetic valve is fixed on the limit baffle, and an opening key and a switch of the ejection device are respectively arranged on a control panel of the automobile.

5. The injection-type battery thermal insulation device according to claim 4, wherein: the battery heat-insulating sleeve is made of rubber, and the outer side surface of the battery heat-insulating sleeve is provided with a heat-insulating coating.

6. The injection-type battery thermal insulation device according to claim 5, wherein: the electric heating heat-insulating sleeve is far away from one end of the connecting pipe, a convex edge and a concave edge are arranged on the upper surface and the lower surface of the electric heating heat-insulating sleeve, and the protruding and concave sections of the electric heating heat-insulating sleeve are trapezoidal, so that a sealing edge and pressing strip structure is formed.

7. The injection-type battery thermal insulation device according to claim 6, wherein: the top pushing device is one of a servo motor, a stepping motor, an air cylinder and a hydraulic cylinder.

8. The injection-type battery thermal insulation device according to claim 7, wherein: and a water level observation window is arranged at the upper part of one side surface of the motor shell.

9. The injection-type battery thermal insulation device according to claim 8, wherein: the included angle between the injection tube and the horizontal plane is 0-15 degrees.

10. The injection-type battery thermal insulation device according to claim 9, wherein: the volume of the tube side of the injection tube is equal to the volume of the cavity in a natural state.