Battery heat dissipation cooling device and method for electric motorcycle

Abstract

The invention relates to the technical field of battery heat dissipation, and provides a battery heat dissipation cooling device and method.The battery heat dissipation cooling device for the electric motorcycle comprises a protective shell, a battery is located in the protective shell, and the outer portion of the protective shell is fixedly connected with a plurality of heat dissipation blocks; the device further comprises a limiting plate, a cold water pipe, a circulating pump, an air cooler and a temperature sensor, the limiting plate abuts against the inner wall of the protective shell, a mounting opening allowing the battery to penetrate through is formed in the limiting plate, a plurality of vent holes are formed in the limiting plate, the cold water pipe is arranged in the side wall of the protective shell, and the cold water pipe communicates with an atomization nozzle. A water inlet of the circulating pump is communicated with the bottom of the protective shell, a water outlet of the circulating pump is communicated with the cold water pipe, the air cooler is installed on the protective shell, and the temperature sensor is installed in the protective shell. The problem that in the prior art, a natural heat dissipation mode is difficult to meet the requirements of high power of a battery and high-temperature heat dissipation during charging is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of battery heat dissipation, and in particular to a battery heat dissipation cooling device and method for an electric motorcycle. Background Art

[0002] Electric motorcycle batteries are rechargeable batteries used to power electric motorcycles, electric bicycles or electric two-wheeled vehicles. They have the characteristics of high-rate discharge, green environmental protection, and energy saving. Electric motorcycle batteries usually use lead-acid batteries and lithium batteries. With the development of technology, electric motorcycle lithium batteries are gradually replacing lead-acid batteries. This type of lithium battery has the characteristics of high energy density, light weight, fast charging speed, high performance, and can be recharged repeatedly.

[0003] At present, batteries used in electric motorcycles usually adopt natural heat dissipation, that is, no active heat dissipation device is added to cool the battery. Heat exchange is carried out between the battery's passive heat dissipation and the outside world. When the battery power is large or when charging, the battery will have a more obvious heat generation phenomenon. The natural heat dissipation method is difficult to meet the diverse usage needs and is prone to safety accidents. In modern society where people's safety awareness is gradually improving, more attention is paid to the heat dissipation and cooling of the battery to ensure the safe use of the battery. Summary of the Invention

[0004] The present invention provides a battery heat dissipation and cooling device and method for an electric motorcycle, which is used to solve the problem that the natural heat dissipation method in the prior art is difficult to meet the requirements of high power and high temperature heat dissipation of the battery during charging.

[0005] The technical solution of the present invention is as follows: A battery heat dissipation and cooling device for an electric motorcycle includes a protective shell, a battery is located inside the protective shell, and further includes:

[0006] a limiting plate, the limiting plate abutting against the inner wall of the protective shell, the limiting plate being provided with a mounting opening for the battery to pass through;

[0007] a cold water pipe, the cold water pipe being arranged inside the side wall of the protective shell and being connected to an atomizing nozzle for spraying cold water into the interior of the protective shell;

[0008] a circulating pump, wherein the water inlet of the circulating pump is connected to the bottom of the protective shell, and the water outlet of the circulating pump is connected to the cold water pipe;

[0009] an air cooler, the air cooler being mounted on the protective shell and configured to blow air into the interior of the protective shell;

[0010] A temperature sensor is installed inside the protective shell.

[0011] In order to cool the water in the cold water pipe, the water outlet of the circulation pump is connected to the cold water pipe through a heat dissipation pipe, and a plurality of heat dissipation fins are fixedly connected to the outside of the heat dissipation pipe.

[0012] In order to further improve the heat dissipation effect of the water in the cold water pipe, the heat dissipation pipe is arranged outside the protective shell in a bent shape.

[0013] In order to protect the circulation pump and the heat dissipation pipe, a protection frame is fixedly connected to the outside of the protection shell, and the heat dissipation pipe is located inside the protection frame.

[0014] In order to improve the heat dissipation of the protective shell, a plurality of heat dissipation blocks are fixedly connected to the outside of the protective shell, and the outer surfaces of the heat dissipation blocks are arc-shaped.

[0015] In order to improve the air flow in the protective shell, a plurality of ventilation holes are opened on the limiting plate.

[0016] In order to dissipate heat from the bottom of the battery, a plurality of grooves are provided on the inner bottom wall of the protective shell.

[0017] To ensure the sealing of the battery, a sealing cover is installed on the top of the battery, and the battery circuit is located inside the sealing cover.

[0018] In order to exhaust the protective shell and avoid excessive internal pressure, a cover plate is detachably connected to the top of the protective shell, and a ventilation pipe is connected to the cover plate.

[0019] In order to reduce the escape of water vapor, a water-absorbing sponge is installed inside the ventilation pipe, and an extrusion piece for squeezing the water-absorbing sponge is provided on the ventilation pipe. The extrusion piece includes:

[0020] a fixing frame fixedly connected to the interior of the ventilation tube;

[0021] The squeezing plate is movably arranged inside the ventilation pipe, and the water-absorbing sponge is located between the fixing frame and the squeezing plate, and the squeezing plate is in contact with the water-absorbing sponge.

[0022] A method for cooling a battery for an electric motorcycle, using the above-mentioned device for cooling a battery for an electric motorcycle, comprises the following steps:

[0023] S1. Place the battery inside the protective shell and install it inside the installation opening, with the limit plate in contact with the inner wall of the protective shell. Connect the cover plate to the top of the protective shell and connect the battery circuit to the electric motorcycle.

[0024] S2. The temperature sensor monitors the temperature inside the protective shell. Under normal conditions, the bottom of the battery is immersed in cold water, and the air cooler circulates air inside the protective shell and ventilates it through the ventilation pipe.

[0025] S3. When the temperature sensor senses that the temperature has risen to a certain level, it controls the circulation pump to start, sucking cold water from the inside of the protective shell into the heat exchange tube and sending it into the inside of the cold water pipe. The cold water in the cold water pipe is sprayed onto the surface of the battery through the atomizing nozzle to cool the battery.

[0026] The working principle and beneficial effects of the present invention are:

[0027] 1. In the present invention, the battery is immersed in cold water to cool the battery under normal conditions, and at the same time, a cooling fan circulates air inside the protective shell to cool the battery.

[0028] 2. In the present invention, the temperature inside the protective shell is monitored by a temperature sensor. When it is detected that the temperature inside the protective shell is too high, an electrical signal is transmitted to the controller to control the circulation pump to start, so that cold water circulates between the protective shell and the cold water pipe, and sprays water mist on the surface of the battery through the atomizing nozzle to cool it. At the same time, when the cold water enters the heat dissipation pipe, the water is dissipated by the bent heat dissipation pipe and the heat sink, ensuring the low temperature of the cold water, thereby ensuring the cooling effect on the battery.

[0029] 3. In the present invention, the air cooler generates circulating air inside the protective shell, realizes ventilation inside and outside the protective shell through the heat exchange pipe, absorbs water vapor through the water-absorbing sponge to reduce the escape of water vapor, and at the same time, the water-absorbing sponge is squeezed by the squeezing plate to squeeze the water in the water-absorbing sponge into the inside of the protective shell, thereby avoiding the reduction of water in the protective shell, thereby ensuring the water cooling effect on the battery.

[0030] 4. Therefore, compared with the battery heat dissipation and cooling device in the prior art, the present invention cools the battery by soaking it in cold water in the protective shell, and the air cooler circulates the air inside the protective shell. The temperature inside the protective shell is monitored by a temperature sensor. When the temperature rises, the circulation pump is controlled to start, so that the cold water circulates and sprays water mist on the surface of the battery to cool it. The water is dissipated by the heat pipe and the heat sink to ensure the low temperature state of the cold water, thereby ensuring the cooling effect on the battery. The interior of the protective shell is kept in a lower temperature environment by the cold water, so that the cold air blown by the air cooler is diffused inside the protective shell, thereby improving the cooling effect on the battery. The ventilation pipe realizes ventilation inside and outside the protective shell, thereby cooling the battery by air. The water vapor is absorbed by the water-absorbing sponge to prevent moisture from escaping through the ventilation pipe, thereby ensuring the amount of cold water in the protective shell. The water in the water-absorbing sponge is squeezed out by the squeezing plate and falls into the interior of the protective shell, thereby ensuring the water absorption capacity of the water-absorbing sponge. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] Figure 1 A schematic structural diagram of the first perspective of the present invention as a whole;

[0033] Figure 2 It is a schematic diagram of the exploded structure of the present invention in a partially cutaway view;

[0034] Figure 3 A schematic structural diagram of the second perspective of the present invention as a whole;

[0035] Figure 4 This is a schematic diagram of the structure of the cold water pipe, atomizing nozzle, circulation pump and heat dissipation pipe of the present invention;

[0036] Figure 5 Schematic diagram of the structure of the battery, the limiting plate and the sealing cover of the present invention;

[0037] Figure 6 This is a schematic diagram of the structure of the protective shell, air cooler and temperature sensor of the present invention;

[0038] Figure 7 A schematic structural diagram of the ventilation tube, the water-absorbing sponge and the extrusion member according to the present invention from a first perspective;

[0039] Figure 8 This is a schematic structural diagram of the ventilation tube, water-absorbing sponge and extrusion component from a second perspective of the present invention.

[0040] In the picture:

[0041] 1. Protective shell; 2. Heat sink; 3. Limit plate; 4. Cold water pipe; 5. Atomizing nozzle; 6. Circulation pump; 7. Sealing cover; 8. Air cooler; 9. Temperature sensor; 10. Heat pipe; 11. Heat sink; 12. Protective frame; 13. Cover; 14. Ventilation pipe; 15. Absorbent sponge;

[0042] 101. Fixed frame; 102. Extrusion plate; 103. Electric cylinder. DETAILED DESCRIPTION

[0043] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0044] like Figures 1 to 8As shown, this embodiment proposes a battery heat dissipation and cooling device for an electric motorcycle, including a protective shell 1, a battery located inside the protective shell 1, and a plurality of heat dissipation blocks 2 fixedly connected to the outside of the protective shell 1. The outer surface of the heat dissipation block 2 is arc-shaped. The heat dissipation block 2 can increase the heat exchange area between the protective shell 1 and the outside, thereby improving the passive heat dissipation effect of the battery inside the protective shell 1. The device also includes a limit plate 3, a cold water pipe 4, a circulation pump 6, an air cooler 8 and a temperature sensor 9. Compared with the battery heat dissipation and cooling device in the prior art, the present invention uses the cold water in the protective shell 1 to infiltrate and cool the battery, the air cooler 8 keeps the internal air of the protective shell 1 in a circulating state, and the temperature inside the protective shell 1 is monitored by the temperature sensor 9. When the temperature rises, the circulation pump is controlled 6 is turned on to circulate cold water and spray water mist on the surface of the battery for water cooling. The water is dissipated through the heat pipe 10 and the heat sink 11 to ensure the low temperature state of the cold water, thereby ensuring the cooling effect on the battery. The interior of the protective shell 1 is kept in a lower temperature environment by the cold water, so that the air cooler 8 blows cold air to diffuse inside the protective shell 1, thereby improving the cooling effect on the battery. The inside and outside of the protective shell 1 are ventilated through the ventilation pipe 14, thereby air cooling the battery. The water vapor is absorbed by the water-absorbing sponge 15 to prevent moisture from escaping through the ventilation pipe 14, thereby ensuring the amount of cold water in the protective shell 1. The water in the water-absorbing sponge 15 is squeezed out by the squeezing plate 102 and falls into the interior of the protective shell 1, thereby ensuring the water absorption capacity of the water-absorbing sponge 15.

[0045] like Figure 2 and Figure 5 As shown, the limiting plate 3 and the inner wall of the protective shell 1 are in conflict, and a mounting port for the battery to pass through is provided on the limiting plate 3. A plurality of ventilation holes are provided on the limiting plate 3. The battery is installed inside the mounting port, and the battery is limited by the limiting plate 3. At the same time, the limiting plate 3 is made of elastic material, such as rubber, which can protect the battery and absorb external impact. There is a certain sliding damping between the limiting plate 3 and the outer wall of the battery and the inner wall of the protective shell 1, which can ensure the stability of the battery.

[0046] like Figures 1 to 4As shown, the cold water pipe 4 is arranged inside the side wall of the protective shell 1, and the cold water pipe 4 is connected to an atomizing nozzle 5 for spraying cold water into the interior of the protective shell 1. The water inlet of the circulating pump 6 is connected to the bottom of the protective shell 1, and the water outlet of the circulating pump 6 is connected to the cold water pipe 4. Cold water is placed inside the protective shell 1, and the lower part of the battery is immersed in the cold water. The battery is cooled by the cold water. The cold water in the protective shell 1 can be sent to the inside of the cold water pipe 4 through the circulating pump 6 to cool the side wall of the protective shell 1. Part of the cold water is sprayed out through the atomizing nozzle 5 to form The water mist is sprayed on the surface of the battery to further cool the battery, thereby ensuring the cooling effect of the battery. The battery shell has a good waterproof effect to prevent cold water from damaging the battery. At the same time, to ensure the sealing of the battery, a sealing cover 7 is installed on the top of the battery. The battery circuit is located inside the sealing cover 7 to prevent water vapor from corroding the battery circuit or causing electrical damage. In order to dissipate heat from the bottom of the battery, a plurality of grooves are opened on the inner bottom wall of the protective shell 1, so that the cold water can contact the bottom wall of the battery, thereby cooling the battery more comprehensively.

[0047] like Figure 2 and Figure 6 As shown, the air cooler 8 is installed on the protective shell 1 and is used to blow gas into the interior of the protective shell 1. The air cooler 8 is installed inside the protective shell 1 and is above the water surface. Under the action of the air cooler 8, the air inside the protective shell 1 flows, and the cold water keeps the interior of the protective shell 1 at a lower temperature, thereby generating cold air inside the protective shell 1 to cool the batteries. The vents on the limiting plate 3 allow the cold air to flow more comprehensively inside the protective shell 1, thereby better cooling the batteries.

[0048] The temperature sensor 9 is installed inside the protective shell 1. The temperature inside the protective shell 1 is monitored by the temperature sensor 9. When the battery is working at high power or charging, the temperature sensor 9 detects that the temperature has risen, transmits an electrical signal to the controller, and controls the circulation pump 6 to start, so that the cold water circulates and the water mist is sprayed on the surface of the battery to cool it.

[0049] In order to cool the water in the cold water pipe 4, the water outlet of the circulating pump 6 is connected to the cold water pipe 4 through the heat dissipation pipe 10. A plurality of heat sinks 11 are fixedly connected to the outside of the heat dissipation pipe 10. The heat dissipation pipe 10 is arranged in a bent shape on the outside of the protective shell 1. The outside of the protective shell 1 is fixedly connected to a protective frame 12. The heat dissipation pipe 10 is located inside the protective frame 12. When cold water enters the heat dissipation pipe 10, the water is cooled by the bent heat dissipation pipe 10 and the heat sink 11 to ensure the low temperature of the cold water, thereby ensuring the cooling effect on the battery. The protective frame 12 is a breathable structure. While protecting the circulating pump 6 and the heat dissipation pipe 10, it ensures the heat dissipation effect of the heat dissipation pipe 10 and the heat sink 11.

[0050] like Figures 1 to 8As shown, in order to exhaust the protective shell 1 and avoid excessive internal pressure, the top of the protective shell 1 is detachably connected to a cover plate 13, and a ventilation pipe 14 is connected to the cover plate 13. A water-absorbing sponge 15 is installed inside the ventilation pipe 14, and an extrusion piece for squeezing the water-absorbing sponge 15 is provided on the ventilation pipe 14. The extrusion piece includes a fixing frame 101 and an extrusion plate 102. The fixing frame 101 is fixedly connected to the interior of the ventilation pipe 14, and the extrusion plate 102 is movably arranged inside the ventilation pipe 14. An electric cylinder 103 is installed on the ventilation pipe 14, and the output end of the electric cylinder 103 extends into the interior of the ventilation pipe 14 and is fixedly connected to the extrusion plate 102. The water-absorbing sponge 15 is located between the fixing frame 101 and the extrusion plate 102, and the extrusion plate 102 is in contact with the water-absorbing sponge 15. Under the action of the air cooler 8, air flow is generated inside the protective shell 1, and the air is exhausted through the ventilation pipe 14. The air pipe 14 realizes the internal and external ventilation of the protective shell 1, and discharges the high-temperature air in the protective shell 1. When the air is discharged, some moisture will rise with the airflow, and the water vapor will be absorbed by the water-absorbing sponge 15 to reduce the escape of water vapor. At the same time, the electric cylinder 103 regularly drives the extrusion plate 102 to move, and cooperates with the fixed frame 101 to squeeze the water-absorbing sponge 15, so that the moisture in the water-absorbing sponge 15 is squeezed and falls into the interior of the protective shell 1, avoiding the reduction of moisture in the protective shell 1, thereby ensuring the water-cooling effect on the battery and the water absorption capacity of the water-absorbing sponge 15. The ventilation pipe 14 is a detachable structure. For example, the ventilation pipe 14 can be disassembled and assembled by means of threaded connection. The disassembly position of the ventilation pipe 14 corresponds to the position of the water-absorbing sponge 15. After the ventilation pipe 14 is disassembled, the water-absorbing sponge 15 can be replaced to ensure the water absorption effect of the water-absorbing sponge 15.

[0051] A method for cooling a battery for an electric motorcycle, using the above-mentioned device for cooling a battery for an electric motorcycle, comprises the following steps:

[0052] S1. Place the battery inside the protective shell 1 and install it inside the installation opening. The limit plate 3 contacts the inner wall of the protective shell 1. Connect the cover plate 13 to the top of the protective shell 1 and connect the battery circuit to the electric motorcycle.

[0053] S2. The temperature sensor 9 monitors the temperature inside the protective shell 1. Under normal conditions, the bottom of the battery is immersed in cold water, and the air cooler 8 circulates air inside the protective shell 1 and ventilates it through the ventilation pipe 14.

[0054] S3. When the temperature sensor 9 senses that the temperature has risen to a certain level, it controls the circulation pump 6 to start, sucking cold water from the inside of the protective shell 1 into the heat exchange pipe and sending it into the inside of the cold water pipe 4. The cold water in the cold water pipe 4 is sprayed onto the surface of the battery through the atomizing nozzle 5 to cool the battery.

[0055] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A battery heat dissipation and cooling device for an electric motorcycle, comprising a protective shell (1), wherein a battery is located inside the protective shell (1), characterized in that: The protective shell (1) is fixedly connected to a plurality of heat dissipation blocks (2) on the outside, and further comprises: A limiting plate (3), the limiting plate (3) abutting against the inner wall of the protective shell (1), the limiting plate (3) being provided with a mounting opening for the battery to pass through, and the limiting plate (3) being provided with a plurality of ventilation holes; a cold water pipe (4), the cold water pipe (4) being arranged inside the side wall of the protective shell (1), the cold water pipe (4) being connected to an atomizing nozzle (5) for spraying cold water into the interior of the protective shell (1); a circulation pump (6), wherein the water inlet of the circulation pump (6) is connected to the bottom of the protective shell (1), and the water outlet of the circulation pump (6) is connected to the cold water pipe (4); an air cooler (8), the air cooler (8) being mounted on the protective shell (1) and being used for blowing gas into the interior of the protective shell (1); A temperature sensor (9) is installed inside the protective shell (1).

2. The battery heat dissipation and cooling device for an electric motorcycle according to claim 1, characterized in that: The water outlet of the circulation pump (6) is connected to the cold water pipe (4) through a heat dissipation pipe (10), and a plurality of heat dissipation fins (11) are fixedly connected to the outside of the heat dissipation pipe (10).

3. The battery heat dissipation and cooling device for an electric motorcycle according to claim 2, characterized in that: The heat dissipation pipe (10) is arranged in a bent shape outside the protective shell (1).

4. The battery heat dissipation and cooling device for an electric motorcycle according to claim 3, characterized in that: The outside of the protective shell (1) is fixedly connected to a protective frame (12), and the heat dissipation pipe (10) is located inside the protective frame (12).

5. The battery heat dissipation and cooling device for an electric motorcycle according to claim 4, characterized in that: A sealing cover (7) is installed on the top of the battery, and the battery circuit is located inside the sealing cover (7).

6. The battery heat dissipation and cooling device for an electric motorcycle according to claim 5, characterized in that: A plurality of grooves are provided on the inner bottom wall of the protective shell (1).

7. The battery heat dissipation and cooling device for an electric motorcycle according to claim 6, characterized in that: The top of the protective shell (1) is detachably connected to a cover plate (13), and the cover plate (13) is connected to a ventilation pipe (14).

8. The battery heat dissipation and cooling device for an electric motorcycle according to claim 7, characterized in that: A water-absorbing sponge (15) is installed inside the ventilation pipe (14), and an extrusion piece for squeezing the water-absorbing sponge (15) is provided on the ventilation pipe (14).

9. The battery heat dissipation and cooling device for an electric motorcycle according to claim 8, characterized in that: The extrusion comprises: A fixing frame (101), the fixing frame (101) being fixedly connected to the interior of the ventilation pipe (14); The squeezing plate (102) is movably arranged inside the ventilation pipe (14); the water-absorbing sponge (15) is located between the fixing frame (101) and the squeezing plate (102); and the squeezing plate (102) and the water-absorbing sponge (15) are in contact.

10. A method for cooling a battery for an electric motorcycle, using the battery cooling device for an electric motorcycle according to claim 9, characterized in that: The following steps are involved: S1. Place the battery inside the protective shell (1) and install it inside the installation opening, with the limit plate (3) in contact with the inner wall of the protective shell (1), connect the cover plate (13) to the top of the protective shell (1), and connect the battery circuit to the electric motorcycle; S2, the temperature sensor (9) monitors the temperature inside the protective shell (1). Under normal conditions, the bottom of the battery is immersed in cold water, and the air cooler (8) generates air circulation inside the protective shell (1) and ventilates through the ventilation pipe (14); S3. When the temperature sensor (9) senses that the temperature has risen to a certain level, the circulating pump (6) is controlled to start, and cold water is sucked from the inside of the protective shell (1) into the heat exchange pipe and sent into the inside of the cold water pipe (4). The cold water in the cold water pipe (4) is sprayed onto the surface of the battery through the atomizing nozzle (5), thereby cooling the battery.

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