CN112687985A

CN112687985A - Liquid cooling battery of electric motorcycle

Info

Publication number: CN112687985A
Application number: CN202011626807.8A
Authority: CN
Inventors: 洪斌; 彭家洪; 刘洋; 陈杨
Original assignee: Chongqing Huanghe New Energy Automobile Co ltd
Current assignee: Chongqing Huanghe New Energy Automobile Co ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-04-20

Abstract

The invention discloses a liquid-cooled battery of an electric motorcycle, which belongs to the technical field of electric motorcycles and comprises a sealed box body, a controller element and an electric core group, wherein the electric core group consists of a plurality of individual electric cores, insulating cooling liquid is injected into the sealed box body, the electric core group is wholly soaked in the insulating cooling liquid, gaps are arranged among the individual electric cores, a first temperature sensor is arranged in the electric core group and is connected with a charging circuit of the electric core group in series, the liquid-cooled battery also comprises a heating circuit, the heating circuit is connected with the charging circuit of the electric core group in parallel, a second temperature sensor is connected on the heating circuit in series, the first temperature sensor is a negative temperature coefficient, and the second temperature sensor is a positive temperature coefficient; compared with the prior art, the invention has the beneficial effects that the electric core assembly can radiate better and has more uniform temperature when used at normal temperature, and the normal charging and working of the electric core assembly can be ensured well under the condition of low temperature, thereby being very convenient.

Description

Liquid cooling battery of electric motorcycle

Technical Field

The invention relates to the technical field of electric motorcycles, in particular to a liquid-cooled battery of an electric motorcycle.

Background

The electric motorcycle electric core group provides the energy source for equipment, and the lithium ion electric core group is higher to the sensitivity of temperature, and its charge-discharge capacity, circulation life, security etc. directly receive the influence of temperature. When lithium ion core group operational environment temperature is higher, the chemical activity of electric core group material improves to some extent, and then leads to the discharge capacity of electric core group to have certain promotion, nevertheless also can lead to the ageing fast of electric core group material to accelerate simultaneously, and electric core group polarizes seriously, and the rapid decay of cycle life.

The existing electric core group heat dissipation mode is usually provided with an air opening on the electric core group or the electric core group box wall, and a fan is arranged in the electric core group box to dissipate heat of the electric core group module, and under the condition of lower temperature in winter, the lithium electric core group is easy to have the condition of being not charged or not working directly.

In summary, the inventor proposes a liquid-cooled battery for an electric motorcycle.

Disclosure of Invention

The liquid cooling electric core assembly of the electric motorcycle solves the problems that the electric core assembly of the electric motorcycle cannot work due to the fact that the electric core assembly of the electric motorcycle is poor in heat dissipation and cannot charge electricity under the condition of low temperature in the prior art.

In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows:

a liquid cooling battery of an electric motorcycle comprises a sealing box body, a controller element and an electric core group, wherein the electric core group consists of a plurality of individual electric cores, insulating cooling liquid is injected into the sealing box body, the electric core group is wholly soaked in the insulating cooling liquid, gaps are arranged among the individual electric cores, a first temperature sensor is arranged in the electric core group, the first temperature sensor is connected with a charging circuit of the electric core group in series, the liquid cooling battery also comprises a heating circuit, the heating circuit is connected with the charging circuit of the electric core group in parallel, a second temperature sensor is connected on the heating circuit in series, the first temperature sensor is a negative temperature coefficient, and the second temperature sensor is a positive temperature coefficient; the electric core group is soaked in the insulating cooling liquid, so that the insulating cooling liquid can rapidly conduct heat generated in the discharging process of the electric core group in the insulating cooling liquid for rapid heat exchange, a gap is formed between the individual electric cores, the temperature of a main heating part of the electric core group can be rapidly dissipated, the electric core group can be well dissipated, in winter, the electric core group cannot be charged or cannot work due to too low temperature, the heating circuit is connected with the first temperature sensor in parallel, the first temperature sensor is connected with the charging circuit of the electric core group in series, when the electric core group is communicated and charged, as the first temperature sensor is a temperature sensor with a negative temperature coefficient, the lower the temperature is, the higher the resistance is, the larger the resistance is, the second temperature sensor is a temperature sensor with a positive temperature coefficient, the lower temperature is small, the current can be directly communicated with the heating circuit through the heating circuit, heating circuit can heat insulating coolant liquid for insulating coolant liquid heaies up, thereby drive the temperature rise of electric core group, along with the temperature rise of electric core group, first temperature sensor's resistance reduces, and the charging circuit that the electric current can communicate the electric core group charges for the electric core group, fine like this avoided the electric core group not advance the problem of charging winter, and the temperature rise also can make the electric core group work more stable, unusual convenience.

Further limiting, the heating circuit is arranged at the bottom of the sealed box body; the heating circuit is arranged at the bottom of the sealed box body, so that the heating starting position is the bottom of the insulating cooling liquid, the heat is conducted upwards, the heat is conducted more quickly, and the efficiency is higher.

Further limiting, the outside of the sealed box body is provided with a heat dissipation rib; the heat dissipation ribs are arranged outside the sealing box body, so that the heat exchange effect between the sealing box body and the outside is better, and the heat dissipation effect is better.

Further, the sealed box body is a sealed alloy box body. The thermal conductivity of the alloy box body is better.

Further, an electronic fan is arranged outside the sealed box body. The electronic fan can forcibly cool the sealed box body, particularly the heat dissipation ribs, so as to better achieve the cooling effect.

Compared with the prior art, the invention has the beneficial effects that the electric core assembly can radiate better and has more uniform temperature when used at normal temperature, and the normal charging and working of the electric core assembly can be ensured well under the condition of low temperature, thereby being very convenient.

Drawings

FIG. 1 is a simplified schematic illustration of the interior of a sealed enclosure;

FIG. 2 is a schematic circuit diagram of the working principle of the electric core group;

fig. 3 is a schematic structural view of a sealed case.

The designations in the figures correspond respectively to: 1-a sealed box body, 11-a heat dissipation rib, 2-an electric core group, 3-insulating cooling liquid, 4-a charging circuit, 41-a first temperature sensor, 5-a heating circuit and 51-a second temperature sensor.

Detailed Description

In order that those skilled in the art can better understand the present invention, the following technical solutions are further described with reference to the accompanying drawings and examples.

Example (b):

as shown in fig. 1-3, a liquid-cooled battery for an electric motorcycle comprises a sealed box 1, a controller element and an electric core set 2, wherein the electric core set 2 is composed of a plurality of individual electric cores, an insulating cooling liquid 3 is injected into the sealed box 1, the electric core set 2 is wholly soaked in the insulating cooling liquid 3, gaps are arranged among the individual electric cores, a first temperature sensor 41 is arranged in the electric core set 2, the first temperature sensor 41 is connected in series with a charging circuit 4 of the electric core set 2, the liquid-cooled battery further comprises a heating circuit 5, the heating circuit 5 is connected in parallel with the charging circuit 4 of the electric core set 2, a second temperature sensor 51 is connected in series on the heating circuit 5, the first temperature sensor 41 has a negative temperature coefficient, and the second temperature sensor 51 has a positive temperature coefficient; the heating circuit 5 is arranged at the bottom of the sealed box body 1; the outside of the sealed box body 1 is provided with a heat dissipation rib 11, and further, in the optimized scheme, the sealed box body 1 is a sealed alloy box body, and the outside of the sealed box body 1 is also provided with an electronic fan.

The insulating cooling liquid 3 is soaked in the insulating cooling liquid 3, so that the insulating cooling liquid 3 can rapidly conduct heat generated in the discharging process of the electric core group 2 in the insulating cooling liquid 3 for rapid heat exchange, a gap is arranged between individual electric cores, the temperature of a main heating part of the electric core group 2 can be rapidly dissipated, the electric core group 2 is well dissipated, in winter, the electric core group 2 cannot be charged or cannot work due to too low temperature, the heating circuit 5 is connected with the first temperature sensor 41 in parallel, the first temperature sensor 41 is connected with the charging circuit of the electric core group 2 in series, when the electric core group 2 is communicated and charged, because the first temperature sensor 41 is a temperature sensor with a negative temperature coefficient, the lower the temperature is, the larger the resistance is, at the moment, because the resistance of the first temperature sensor 41 is too large, the second temperature sensor 51 is a temperature sensor with a positive temperature coefficient, at the moment, the temperature is low, the resistance is low, the current can directly communicate the heating circuit 5 through the heating circuit 5, the heating circuit 5 can heat the insulating cooling liquid 3, the insulating cooling liquid 3 is heated, the temperature of the electric core group 2 is driven to rise, along with the temperature rise of the electric core group 2, the resistance of the first temperature sensor 41 is reduced, the current can communicate the charging circuit 4 of the electric core group 2 to charge the electric core group 2, the problem that the electric core group 2 cannot be charged in winter is well solved, and the electric core group 2 can work more stably due to the temperature rise, so that the operation is very convenient; the heating circuit 5 is arranged at the bottom of the sealed box body 1, so that the heating starting position is the bottom of the insulating cooling liquid 3, and the heat is conducted upwards, so that the heat is conducted more quickly and more efficiently; the heat dissipation ribs are arranged outside the sealing box body 1, so that the heat exchange effect between the sealing box body 1 and the outside is better, and the heat dissipation effect is better.

The liquid cooling electric core assembly of the electric motorcycle provided by the invention is described in detail above. The description of the specific embodiments is only intended to facilitate an understanding of the method of the invention and its core ideas. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims

1. The utility model provides an electric motorcycle car liquid cooling battery, includes seal box, controller component and electric core group, the electric core group comprises a plurality of individual electric cores, its characterized in that: the utility model discloses a sealed box, including sealed box, battery core group, heating circuit, charging circuit, heating circuit, first temperature sensor, second temperature sensor, sealed box is internal to be annotated with insulating coolant liquid, battery core group is whole to be soaked in the insulating coolant liquid, a plurality of individual electric cores between be equipped with the clearance, be equipped with first temperature sensor in the battery core group, first temperature sensor with the charging circuit of battery core group establishes ties, still including heating circuit, heating circuit with the charging circuit of battery core group is parallelly connected, it has second temperature sensor to establish ties on the heating circuit, first temperature sensor is negative temperature coefficient, second temperature sensor is positive temperature coefficient.

2. The liquid-cooled battery for electric motorcycles as claimed in claim 1, wherein: the heating circuit is arranged at the bottom of the sealed box body.

3. The liquid-cooled battery for electric motorcycles as claimed in claim 1, wherein: and a heat dissipation rib is arranged outside the sealed box body.

4. The liquid-cooled battery for electric motorcycles as claimed in claim 1, wherein: the sealing box body is a sealed alloy box body.

5. The liquid-cooled battery for electric motorcycles as claimed in claim 3, wherein: and an electronic fan is arranged outside the sealed box body.