CN210576338U

CN210576338U - Liquid cooling battery package heating system and car

Info

Publication number: CN210576338U
Application number: CN201922070245.2U
Authority: CN
Inventors: 李雄
Original assignee: Beijing Electric Vehicle Co Ltd
Current assignee: Beijing Electric Vehicle Co Ltd
Priority date: 2019-11-25
Filing date: 2019-11-25
Publication date: 2020-05-19
Anticipated expiration: 2029-11-25

Abstract

The utility model provides a liquid cooling battery package heating system and car relates to liquid cooling heating field. This liquid cooling battery package heating system includes: the water tank and fan combination device is respectively connected with the magnetron heating bin, the battery pack and the circulating water pump; the water tank and fan combination device, the magnetron heating bin and the circulating water pump are arranged on a cooling liquid circulating external loop; the high-voltage control unit is electrically connected with the battery pack and the magnetron heating bin respectively; wherein the high-pressure control unit is arranged on a cooling liquid circulation inner loop. The utility model discloses a through at the common battery heating of two dimensions, shortened the coolant liquid from low temperature heating to high temperature's time, effectively reduced the cooling plate from electric core bottom or the thermal transfer time of lateral part beginning for liquid cooling battery package heating system reduces battery heating time, shortens battery package charge time, promotes the quality of car.

Description

Liquid cooling battery package heating system and car

Technical Field

The utility model relates to a liquid cooling heating field, in particular to liquid cooling battery package heating system and car.

Background

With the development of the national economic society, the development of new energy automobiles presents a high-speed development situation, more and more vehicles have beautiful shapes, and vehicles with long endurance are continuously emerged. However, the larger and larger the battery of the electric automobile, the 60kwh is required for the battery of the conventional 500km endurance vehicle, and the 80kwh is required for the endurance vehicle of 600 km. In the current state of the art batteries, power batteries are active at low temperatures-first, the batteries often need to be heated to meet the release of battery activity and support normal use of the vehicle.

The currently common battery heating technology is external heating and internal heating. The external heating type is classified into an ohmic heating method such as resistance film heating and thermistor heating, and a liquid cooling heating method. The inside heating mode is pre-buried nickel piece in electric core or module, leans on the nickel piece of linking positive negative pole to generate heat and directly heats electric core or module rapid heating to the temperature of wanting. The external ohmic heating method cannot completely ensure uniformity due to the arrangement of the heating surfaces, generally has a temperature difference of more than 10 ℃, has adverse effect on the service life of a battery core, and is generally used in early-stage vehicles and low-end vehicles. The liquid cooling heating technology is a heating technology which is common and mainstream, but because the heating rate of a liquid cooling system is influenced by the heat transfer rate of a contact surface between a module and a liquid cooling plate, the current temperature rise rate of the battery cell still cannot meet the requirement of technical development.

SUMMERY OF THE UTILITY MODEL

An embodiment of the utility model provides a liquid cooling battery package heating system and car to solve the problem that prior art coolant liquid adds heat time length and harm battery life.

In order to solve the technical problem, an embodiment of the utility model provides a liquid cooling battery package heating system, include:

the water tank and fan combination device is respectively connected with the magnetron heating bin, the battery pack and the circulating water pump; the water tank and fan combination device, the magnetron heating bin and the circulating water pump are arranged on a cooling liquid circulating external loop;

the high-voltage control unit is electrically connected with the battery pack and the magnetron heating bin respectively; wherein the high-pressure control unit is arranged on a cooling liquid circulation inner loop.

Further, a first end of the circulating water pump is connected with a first end of the water tank and fan combination device;

and the second end of the circulating water pump is connected with one end of the inlet liquid of the battery pack.

Further, the second end of the water tank fan assembly is connected with the first end of the magnetron heating bin;

and the second end of the magnetron heating bin is connected with one end of the outlet liquid of the battery pack.

Further, the magnetron heating chamber includes: and the kettle is arranged inside the magnetron heating bin, and the kettle opening of the kettle is positioned on the cooling liquid circulation outer loop.

Further, the first end of the high-voltage control unit is connected with a heating relay, wherein the heating relay is electrically connected with the positive electrode of the battery pack;

the second end of the high-voltage control unit is electrically connected with the negative electrode of the battery pack;

and the third end and the fourth end of the high-voltage control unit are respectively connected with the third end and the fourth end of the magnetron heating bin.

Further, the battery pack is electrically connected with an internal controller of a battery management system.

Further, a plurality of rectangular battery cells arranged side by side are arranged inside the battery pack, wherein the battery cells are connected through a positive electrode and a negative electrode.

The embodiment of the utility model provides a still provide an automobile, include as above liquid cooling battery package heating system.

The utility model has the advantages that:

the utility model discloses a common battery heating of two dimensions including outer promotes heating rate. The utility model discloses shortened the time that the coolant liquid heated to the high temperature from low temperature, utilized the internal resistance self-heating lift system average temperature that the high-power pulse of battery self-discharge process produced simultaneously, can effectively reduce the cooling plate from the thermal transmission time of electric core bottom or lateral part beginning, the utility model discloses a liquid cooling battery package heating system reduces battery system heating time, shortens battery package charge time.

Drawings

Fig. 1 shows a schematic structural diagram of a liquid-cooled battery pack heating system according to an embodiment of the present invention.

Description of reference numerals:

1-water tank fan assembly; 2-magnetron heating cabin; 3-a high voltage control unit; 4-circulating water pump; 5-a battery pack; 6-a battery management system; 7-pot mouth.

Detailed Description

In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments. In the following description, specific details are provided, such as specific configurations and components, merely to facilitate a thorough understanding of embodiments of the invention. Thus, it will be apparent to those skilled in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the invention. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.

It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

The utility model discloses to the problem that prior art coolant liquid heat time is long and harm battery life, provide a liquid-cooled battery package heating system and car.

As shown in fig. 1, the utility model discloses a liquid cooling battery package heating system of an embodiment includes:

the water tank and fan combined device 1 is respectively connected with the magnetron heating bin 2, the battery pack 5 and the circulating water pump 4; the water tank and fan combination device 1, the magnetron heating bin 2 and the circulating water pump 4 are arranged on a cooling liquid circulating external loop;

the high-voltage control unit 3 is electrically connected with the battery pack 5 and the magnetron heating bin 2 respectively; wherein the high-pressure control unit 3 is arranged on a cooling liquid circulation inner loop.

It should be noted that the utility model discloses a common battery heating of two dimensions of coolant liquid circulation outer loop and coolant liquid circulation inner loop promotes rate of heating. The utility model shortens the time of heating the cooling liquid from low temperature to high temperature, and simultaneously utilizes the internal resistance generated in the self-heating process of the high-power pulse of the battery to improve the average temperature of the system; the fan in the water tank and fan combination device 1 can work at high temperature of cooling liquid, so that the temperature of the cooling liquid is reduced, and the purpose of liquid cooling is achieved.

Optionally, a first end of the water circulation pump 4 is connected with a first end of the water tank and fan assembly 1;

and the second end of the circulating water pump 4 is connected with one end of the inlet liquid of the battery pack 5.

Specifically, the second end of the water tank fan assembly 1 is connected with the first end of the magnetron heating chamber 2;

the second end of the magnetron heating bin 2 is connected with one end of the outlet liquid of the battery pack 5.

It should be noted that the cooling liquid can flow on the cooling liquid circulation external loop under the action of the circulating water pump 4; the circulating water pump 4 controls cooling liquid to flow into the battery pack 5 through one end of the liquid inlet and then flows into the magnetron heating bin 2 through one end of the liquid outlet of the battery pack 5, the magnetron generates 2.4Ghz alternating pulse heating and cooling liquid, and the cooling liquid heats the battery again through circulation, so that the phenomenon that the traditional mode is thermistor heating of an air conditioner heat management system is avoided, and heat circulation is fully utilized.

Optionally, the magnetron heating chamber 2 includes:

and the kettle is arranged inside the magnetron heating bin 2, and a kettle opening 7 of the kettle is positioned on the cooling liquid circulation external loop.

It should be noted that the magnetron heating chamber 2 includes a magnetic conduction pipe and a metal closed heating chamber, a plastic kettle is arranged in the heating chamber, the kettle opening 7 is connected in series in a cooling liquid circulation loop, cooling liquid can be added through the kettle opening 7, and the cooling liquid can flow under the action of the circulating water pump 4.

Optionally, in an embodiment of the present invention, a first end of the high voltage control unit 3 is connected to a heating relay, wherein the heating relay is electrically connected to an anode of the battery pack 5;

the second end of the high-voltage control unit 3 is electrically connected with the negative electrode of the battery pack 5;

and the third end and the fourth end of the high-voltage control unit 3 are respectively connected with the third end and the fourth end of the magnetron heating bin 2.

Specifically, the battery pack 5 is electrically connected to an internal controller of the battery management system 6.

It should be noted that, when the battery management system 6 determines that the battery system needs to be heated, the heating relay is closed and the high-power pulse type discharge is performed on the magnetron heating chamber 2 through the high-voltage control unit 3, in the pulse discharge process, the self internal resistance of the battery core generates self-heating under the action of a maximum current, in addition, the pulse power acts on the magnetron heating chamber 2 and can generate 2.4GHZ microwaves, and under the action of the waveguide tube, the microwaves enable the cooling liquid water molecules in the water containing kettle to rapidly collide with items under the level change of the microwaves to generate heat, so that the cooling liquid is heated. The cooling liquid passes through the bottom of the battery under the action of the circulating water pump 4, and heat is transferred to the battery core from the outside. Therefore, the inside and the outside are heated together, so that the temperature of the battery core can reach 4 ℃/min.

Specifically, a plurality of rectangular battery cells arranged side by side are arranged inside the battery pack 5, wherein each battery cell is connected through a positive electrode and a negative electrode. Here, the capacity of the battery pack 5 is increased by connecting a plurality of battery cells, and the specific capacity is not particularly limited, depending on the actual situation.

To sum up, the embodiment of the present invention utilizes the high voltage control unit 3 to perform high power pulse discharge on the magnetron heating chamber 2, and generates a high power alternating magnetic field under the action of the pulse control unit, and the magnetic field directly heats the cooling liquid in the heating chamber, so that the heating process can be controlled; meanwhile, the internal resistance self-heating generated in the self-discharging process of the high-power pulse of the battery is utilized to increase the average temperature of the system, so that the transfer time of the heat of the cooling plate from the bottom or the side part of the battery cell can be effectively reduced.

The foregoing is directed to the preferred embodiments of the present invention, and it will be understood by those skilled in the art that various changes and modifications may be made without departing from the principles of the invention, and that such changes and modifications are intended to be included within the scope of the invention.

Claims

1. A liquid-cooled battery pack heating system, comprising:

the water tank and fan combined device (1) is respectively connected with the magnetron heating bin (2), the battery pack (5) and the circulating water pump (4); the water tank and fan combination device (1), the magnetron heating bin (2) and the circulating water pump (4) are arranged on a cooling liquid circulating external loop;

the high-voltage control unit (3) is electrically connected with the battery pack (5) and the magnetron heating bin (2) respectively; wherein the high-pressure control unit (3) is arranged on a cooling liquid circulation inner loop.

2. The liquid-cooled battery pack heating system of claim 1,

the first end of the circulating water pump (4) is connected with the first end of the water tank and fan combination device (1);

and the second end of the circulating water pump (4) is connected with one end of the inlet liquid of the battery pack (5).

3. The liquid-cooled battery pack heating system of claim 1,

the second end of the water tank and fan combined device (1) is connected with the first end of the magnetron heating bin (2);

the second end of the magnetron heating bin (2) is connected with one end of the outlet liquid of the battery pack (5).

4. The liquid-cooled battery pack heating system of claim 3, wherein the magnetron heating chamber (2) comprises:

the water kettle is arranged inside the magnetron heating bin (2), wherein a kettle opening (7) of the water kettle is positioned on the cooling liquid circulation external loop.

5. The liquid-cooled battery pack heating system of claim 1,

the first end of the high-voltage control unit (3) is connected with a heating relay, wherein the heating relay is electrically connected with the positive electrode of the battery pack (5);

the second end of the high-voltage control unit (3) is electrically connected with the negative electrode of the battery pack (5);

and the third end and the fourth end of the high-voltage control unit (3) are respectively connected with the third end and the fourth end of the magnetron heating bin (2).

6. The liquid-cooled battery pack heating system of claim 1,

the battery pack (5) is electrically connected with an internal controller of the battery management system (6).

7. The liquid-cooled battery pack heating system of claim 6, wherein a plurality of rectangular side-by-side battery cells are arranged inside the battery pack (5), wherein each battery cell is connected by a positive electrode and a negative electrode.

8. An automobile comprising a liquid-cooled battery pack heating system as claimed in any one of claims 1 to 7.