CN211567720U

CN211567720U - Power battery thermal balance system

Info

Publication number: CN211567720U
Application number: CN201922155369.0U
Authority: CN
Inventors: 韩冰; 刘建宏; 郑直; 王钰凇
Original assignee: Beijing Institute Of Technology New Source Information Technology Co ltd
Current assignee: Beijing Institute Of Technology New Source Information Technology Co ltd
Priority date: 2019-12-05
Filing date: 2019-12-05
Publication date: 2020-09-25
Anticipated expiration: 2029-12-05

Abstract

The utility model discloses a power battery thermal balance system. Power battery includes box, case lid and the inside a plurality of battery module of box, the thermal balance system includes: the electric heating wire heating plate is arranged at the top of the inner side of the box cover and is positioned above the battery module; and the electric exhaust fan is positioned below the heating wire heating plate and is aligned to a channel between the battery modules below the electric exhaust fan. The utility model discloses can promote the ambient temperature of battery, ensure the life and the continuation of the journey mileage of battery.

Description

Power battery thermal balance system

Technical Field

The utility model relates to an electric automobile technical field especially relates to a power battery thermal balance system.

Background

Due to the advantages of small environmental pollution, energy conservation and high efficiency, the electric automobile is generally popularized in current automobile development, but the driving mileage of the electric automobile is influenced by the battery, the service life and the utilization rate of the battery are influenced by the use frequency and the environmental factors, the largest factor influencing the power battery is the environmental temperature, the battery endurance mileage in winter is less than that in summer through experimental verification, and if the battery monomer works in a low-temperature environment for a long time, the battery capacity is lowered, so that the power battery fails in advance.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a power battery thermal balance system can promote the ambient temperature of battery, ensures the life and the continuation of the journey mileage of battery.

In order to achieve the above object, the utility model provides a following scheme:

the utility model provides a power battery thermal balance system, power battery includes box, case lid and the inside a plurality of battery module of box, thermal balance system includes:

the heating wire heating plate is arranged at the top of the inner side of the box cover and is positioned above the battery module;

and the electric exhaust fan is positioned below the heating wire heating plate and is aligned to a channel between the battery modules below the electric exhaust fan.

Optionally, the battery modules and the channels are arranged in a staggered manner, and the electric exhaust fan is located above the channels.

Optionally, the heat balance system further comprises a fan fixing rod, one end of the fan fixing rod is fixed to the top of the box cover, and the other end of the fan fixing rod penetrates through the heating wire heating plate and is fixedly connected with the electric exhaust fan.

Optionally, a mounting hole is formed in the heating wire heating plate, and the fan fixing rod penetrates through the heating wire heating plate through the mounting hole.

Optionally, the heat balance system further comprises a storage battery for supplying power to the heating wire heating plate and the electric exhaust fan.

Optionally, the electric blower has a plurality of blowers.

Optionally, the thermal equalization system further comprises a temperature sensor installed in the box body.

Optionally, the temperature sensor is mounted at the bottom or the top of the inner side of the box body.

Optionally, the thermal balance system still includes the comparator, the first input end of comparator is connected with temperature sensor's signal output part, the second input end and the reference signal of comparator are connected, the reference signal is confirmed by the temperature threshold value, the output of comparator with the first stitch of relay coil end is connected, the fourth stitch ground connection of relay coil end, the second stitch of relay trigger switch end is connected with the power positive pole of battery, the third stitch of relay trigger switch end respectively with the common terminal of heating wire hot plate and the common terminal of electric air exhauster are connected.

According to the utility model provides a concrete embodiment, the utility model discloses a following technological effect: the utility model provides a power battery thermal balance system produces the heat through the heating wire hot plate, expands the heat to whole battery box body fast through electronic air exhauster to the ambient temperature who avoids the battery module crosses low, image battery life-span and continuation of the journey mileage.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a front view of a thermal balancing system for power batteries according to an embodiment of the present invention;

fig. 2 is a top view of a thermal balancing system for power batteries according to an embodiment of the present invention;

fig. 3 is a schematic view of the fixing mode of the exhaust fan in the embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.

In the embodiment, power battery includes box 2, case lid 5 and the inside a plurality of battery module of box 2, as shown in fig. 1, the utility model provides a power battery thermal balance system includes: a heating plate 4 of electric heating wire and an electric exhaust fan 3;

the electric heating wire heating plate 4 is arranged at the top of the inner side of the box cover 5 and is positioned above the battery module;

and the electric exhaust fan 3 is positioned below the heating wire heating plate 4 and is aligned to a channel between the battery modules below the electric exhaust fan 3.

In an embodiment, the heating wire heating plate 4 may be integrated with the case cover 5, and the size of the heating wire heating plate 4 is slightly smaller than that of the case cover 5.

In the above embodiment, battery module and passageway staggered arrangement, electric air exhauster 3 is located directly over the passageway for extract the heat that heating wire hot plate 4 produced, and blow the heat to the passageway fast, heat the battery module of both sides, effectual thermal equilibrium of having realized. Wherein, the number of the electric drawing fans 3 can be provided in plurality.

In the above embodiment, as shown in fig. 3, the heat balance system further includes a fan fixing rod, one end of the fan fixing rod is fixed to the top of the case cover 5, and the other end of the fan fixing rod penetrates through the heating plate 4 of the electric heating wire and is fixedly connected to the electric blower 3. The heating wire heating plate 4 may be provided with a mounting hole, and the fan fixing rod passes through the heating wire heating plate 4 through the mounting hole. As shown in fig. 3, a locking washer 6 is installed at a contact position of the fan fixing rod and the upper end of the electric blower 3, and the fan fixing rod and the lower end of the electric blower 3 are fixed by a spring washer 7 and a bolt 8.

In the above embodiment, the thermal equalization system further includes a storage battery for supplying power to the electric suction fan 3 and the heating wire heating plate 4. The output end of the storage battery is respectively connected with the electric exhaust fan 3 and the electric power input end of the heating wire heating plate 4, the storage battery is arranged outside the battery box body, and a connecting wire between the storage battery and the electric exhaust fan 3 and the heating wire heating plate 4 enters the box from the outside of the box through a through hole arranged on the box cover.

In the above embodiment, the thermal equalization system may further include a temperature sensor 1 installed in the case 2. The temperature sensor 1 can be mounted on the bottom or top of the inner side of the box 2 by means of screw fixation. For detecting the temperature in the power battery box 2. The model of the temperature sensor may be PT 1000.

In the above embodiment, the thermal equilibrium system may further include a comparator, a first input end of the comparator is connected to a signal output end of the temperature sensor, a second input end of the comparator is connected to a reference signal, the reference signal is determined by a temperature threshold, an output end of the comparator is connected to the first pin of the relay coil end, the fourth pin of the relay coil end is grounded, the second pin of the relay trigger switch end is connected to a positive electrode of a power supply of the battery, the third pin of the relay trigger switch end is respectively connected to a common-power end of the heating wire heating plate and a common-power end of the electric exhaust fan, the power supply end of the heating wire heating plate and the power supply end of the electric exhaust fan are both connected to a negative electrode of the battery, so as to trigger the relay switch to be turned on when the temperature detected by the temperature sensor is lower than the temperature threshold, realize opening of heating wire hot plate and electronic air exhauster. The power supply of the circuit board where the comparator is located is provided by the storage battery.

The utility model provides a power battery thermal balance system utilizes electric air exhauster to be full of the box with the heat fast, makes each group battery can get into suitable operating temperature fast. And simultaneously, because the utility model provides a power battery thermal balance system all installs electric air exhauster and heating wire hot plate to power battery case lid on, consequently, has and arranges portably, make things convenient for fault diagnosis and maintenance, low in manufacturing cost's advantage.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The principle and the implementation of the present invention are explained herein by using specific examples, and the above description of the embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.

Claims

1. The utility model provides a power battery thermal balance system which characterized in that, power battery includes box, case lid and the inside a plurality of battery module of box, thermal balance system includes:

2. The power battery thermal equalization system of claim 1, wherein the battery modules are staggered from the channel, and the electric suction fan is located above the channel.

3. The power battery thermal balancing system of claim 1, further comprising a fan fixing rod, wherein one end of the fan fixing rod is fixed to the top of the box cover, and the other end of the fan fixing rod penetrates through the heating wire heating plate to be fixedly connected with the electric suction fan.

4. The power battery thermal equalization system of claim 3, wherein the heating wire heating plate is provided with a mounting hole, and the fan fixing rod passes through the heating wire heating plate through the mounting hole.

5. The power cell thermal equalization system of claim 1, further comprising a battery for powering the heating wire heating plate and the electric blower.

6. The power cell thermal equalization system of claim 1, wherein the electric blower has a plurality of fans.

7. The power cell thermal equalization system of claim 1, further comprising a temperature sensor mounted within the tank.

8. The power cell thermal equalization system of claim 7, wherein the temperature sensor is mounted at the bottom or top inside the case.

9. The power battery thermal equalization system according to claim 7 or 8, further comprising a comparator, wherein a first input end of the comparator is connected with a signal output end of the temperature sensor, a second input end of the comparator is connected with a reference signal, the reference signal is determined by a temperature threshold, an output end of the comparator is connected with a first pin of a relay coil end, a fourth pin of the relay coil end is grounded, a second pin of the relay trigger switch end is connected with a power supply positive electrode of the storage battery, and a third pin of the relay trigger switch end is respectively connected with a common-power end of the heating plate of the heating wire and a common-power end of the electric suction fan.