CN219144270U

CN219144270U - Battery cooling system trades

Info

Publication number: CN219144270U
Application number: CN202223194201.9U
Authority: CN
Inventors: 李立国; 洪木南; 张�杰; 徐锦
Original assignee: Sichuan Zhili Intelligent Energy Technology Co ltd
Current assignee: Sichuan Zhili Intelligent Energy Technology Co ltd
Priority date: 2022-11-30
Filing date: 2022-11-30
Publication date: 2023-06-06
Anticipated expiration: 2032-11-30

Abstract

The utility model belongs to the technical field of electric vehicle battery replacement, and discloses a battery cooling system for battery replacement. The battery cooling system comprises a refrigeration loop, a cooling loop, a battery pack and a battery replacing base. The battery pack is internally provided with a cooling pipeline, and the refrigerating circuit and the cooling circuit are both arranged on the battery replacing base or the vehicle-mounted chassis or in a battery charging bin of the battery replacing station; the refrigerating loop is used for exchanging heat with the cooling liquid in the cooling loop so as to reduce the temperature of the cooling liquid, the water inlet of the cooling loop is communicated with the liquid outlet of the cooling pipeline, and the water outlet of the cooling loop is communicated with the liquid inlet of the cooling pipeline. The battery cooling system for the battery replacement is arranged outside the battery pack, compared with the prior art, the battery cooling system is arranged inside the battery pack, the height of the battery pack is reduced, the stability of the battery pack can be improved, or the battery pack can bear more batteries, and the cruising ability of a new energy automobile is improved.

Description

Battery cooling system trades

Technical Field

The utility model relates to the technical field of electric vehicle battery replacement, in particular to a battery cooling system for battery replacement.

Background

With the rapid development of electric vehicles, the battery-changing heavy truck also develops. In general, an excessively low battery temperature affects the charge and discharge capacity of the battery, and an excessively high temperature affects the life and safety of the battery. Therefore, the cooling of the power battery is particularly important when the battery is charged in a charging station or a vehicle body, and when the vehicle is running, the temperature is required to be kept in a proper temperature range, especially in hot summer in the south.

At present, a cooling system is generally arranged in a battery pack and is arranged at the top of the battery pack, so that the battery pack is higher in height, the gravity center is higher when the battery pack is higher, the battery pack is easy to shake in the running process of a vehicle, and the stability is poor.

Therefore, there is a need to propose a battery cooling system for battery replacement to solve the above-mentioned problems.

Disclosure of Invention

The utility model provides a battery cooling system for a battery pack, which is arranged outside the battery pack, so that the height of the battery pack is reduced, and the stability of the battery pack is further improved.

To achieve the purpose, the utility model adopts the following technical scheme:

the battery cooling system comprises a refrigeration loop, a cooling loop, a battery pack and a battery replacing base, wherein a cooling pipeline is arranged in the battery pack, and the refrigeration loop and the cooling loop are both arranged on the battery replacing base or a vehicle-mounted chassis or a battery charging bin of a battery replacing station;

the refrigerating loop is used for exchanging heat with cooling liquid in the cooling loop so as to reduce the temperature of the cooling liquid, the water inlet of the cooling liquid path is communicated with the liquid outlet of the cooling pipeline, and the water outlet of the cooling loop is communicated with the liquid inlet of the cooling pipeline.

Optionally, the refrigerant circuit comprises a compressor, a condenser, an expansion valve and a heat exchanger connected in sequence.

Optionally, the cooling loop comprises an expansion water tank and a heat exchanger, wherein a water outlet of the expansion water tank is communicated with the heat exchanger and then is communicated with a liquid inlet of the cooling pipeline through a liquid discharge pipeline;

the cooling loop also comprises a water pump, the water outlet of the expansion water tank is communicated with the liquid inlet of the water pump, and the liquid outlet of the water pump is communicated with the liquid inlet of the heat exchanger.

Optionally, the liquid draining pipeline is further provided with a heater, the heater can heat liquid in the liquid draining pipeline, and the expansion water tank is communicated with the liquid draining pipeline through a degassing pipe.

Optionally, the cooling liquid loop further comprises a liquid inlet pipeline, one end of the liquid inlet pipeline is communicated with the water inlet of the expansion tank, the other end of the liquid inlet pipeline is communicated with the liquid outlet of the cooling pipeline through a first quick connector, and the liquid discharge pipeline is communicated with the liquid inlet of the cooling pipeline through a second quick connector.

Optionally, the components in the refrigeration circuit and the components in the cooling circuit are arranged at intervals.

Optionally, the system further comprises an electric control system, and the electric control system can automatically control the refrigeration loop and the cooling loop to work according to the refrigeration/heating request sent by the battery pack.

The utility model has the beneficial effects that:

the utility model provides a battery cooling system for battery replacement, which comprises a refrigerating loop, a cooling loop, a battery pack and a battery replacing base, wherein the refrigerating loop and the cooling loop are arranged on the battery replacing base or on a vehicle-mounted chassis or in a battery charging bin of a battery replacing station; on the other hand, the battery pack space is saved, so that the battery pack can bear more battery cores, and the cruising ability of the new energy automobile is further improved; in yet another aspect, the structure is compact and the chassis arrangement may not be altered.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following description will briefly explain the drawings needed in the description of the embodiments of the present utility model, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the contents of the embodiments of the present utility model and these drawings without inventive effort for those skilled in the art.

FIG. 1 is a schematic diagram of a battery cooling system for a battery in a power exchange according to an embodiment of the present utility model;

fig. 2 is a top view of an assembly diagram of a battery cooling system and a battery exchange base according to an embodiment of the present utility model.

Fig. 3 is a front view of an assembly diagram of a battery cooling system, a battery pack, and a battery exchange base according to an embodiment of the present utility model.

In the figure:

100. a refrigeration circuit; 110. a compressor; 120. a condenser; 130. an expansion valve; 200. a cooling circuit; 210. an expansion tank; 220. a heat exchanger; 230. a liquid discharge pipeline; 240. a water pump; 250. a liquid inlet pipeline; 260. the first quick connector; 270. the second quick connector; 280. an electromagnetic valve; 300. a battery pack; 310. a cooling pipeline; 400. and (5) replacing the electric base.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are orientation or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

The present utility model provides a battery cooling system for battery replacement, which is arranged outside a battery pack 300, and reduces the height of the battery pack 300, thereby improving the stability of the battery pack 300.

Specifically, as shown in fig. 1-3, the battery cooling system includes a refrigeration circuit 100, a cooling circuit 200, a battery pack 300, and a battery change base 400. Wherein, a cooling pipeline 310 is arranged in the battery pack 300, the cooling circuit 200 corresponds to the battery pack 300, a water inlet of the cooling circuit 200 is communicated with a liquid outlet of the cooling pipeline 310, a water outlet of the cooling circuit 200 is communicated with a liquid inlet of the cooling pipeline 310, cooling liquid circularly flows in the cooling circuit 200, so that the cooling circuit 200 exchanges heat with the battery pack 300, and the refrigerating circuit 100 is used for cooling the cooling liquid flowing through the refrigerating circuit 100. Both the refrigeration circuit 100 and the cooling circuit 200 are provided on the battery change base 400 or on the vehicle chassis or in the battery charging compartment of the battery change station. When the refrigeration circuit 100 and the cooling circuit 200 are both disposed on the power conversion base 400, the refrigeration circuit 100 and the cooling circuit 200 may be specifically disposed in the interior or the lower portion of the power conversion base 400, and may be disposed according to actual needs.

According to the battery pack 300, the battery cooling system for battery replacement arranged in the battery pack 300 in the prior art is moved out of the battery pack 300 and is arranged on the battery replacement base 400 or the vehicle-mounted chassis or the battery charging bin of the battery replacement station, so that on one hand, the height of the battery pack 300 is reduced, the gravity center of the battery pack 300 is further lowered, and the stability of the battery pack 300 can be improved when a vehicle runs; on the other hand, the space of the battery pack 300 is saved, so that the battery pack 300 can bear more battery cores, and further the cruising ability of the new energy automobile can be improved; in yet another aspect, the structure is compact and the chassis arrangement may not be altered.

Further, with continued reference to fig. 1, the refrigeration circuit 100 includes a heat exchanger 220, a compressor 110, a condenser 120, and an expansion valve 130, connected in sequence. The refrigeration cycle of the refrigeration circuit 100 is as follows: compressor 110-condenser 120-expansion valve 130-heat exchanger 220-compressor 110. In the present embodiment, the compressor 110 is a scroll-type electric compressor 110, which has small volume, light weight, high reliability, good balance, small vibration, stable operation, and high efficiency in the range of the refrigerating capacity to which it is adapted. The condenser 120 adopts an integrated liquid storage device, so that the structure is compact, and the heat exchange efficiency is high. A pressure sensor may be installed at the inlet of the condenser 120, thereby realizing pressure control of the entire refrigeration cycle. A temperature sensor may be installed on the surface of the heat exchanger 220 to control the temperature of the entire refrigeration cycle, and the expansion valve 130 may be provided to open or close the heat exchanger 220 according to the actual condition requirement. The heat exchanger 220 can adopt a plate heat exchanger, and can realize heat exchange between the refrigerant and the cooling liquid, thereby realizing indirect cooling of the battery cell.

Further, with continued reference to fig. 1, the cooling circuit 200 includes an expansion tank 210 and a heat exchanger 220, and the water outlet of the expansion tank 210 is communicated with the heat exchanger 220 and then is communicated with the liquid inlet of the cooling pipeline 310 through a liquid discharge pipeline 230. By providing the expansion tank 210, the flow rate and pressure of the cooling liquid can be balanced.

Further, the cooling circuit 200 further includes a water pump 240, the water outlet of the expansion tank 210 is communicated with the liquid inlet of the water pump 240, and the liquid outlet of the water pump 240 is communicated with the liquid inlet of the heat exchanger 220. The water pump 240 can provide power for the flow of the cooling fluid in the cooling circuit 200, thereby improving the reliability of the operation of the battery cooling system.

Preferably, the drain pipe 230 is provided with a heater, which can heat the liquid in the drain pipe 230, and the expansion tank 210 is communicated with the drain pipe 230 through a deaeration pipe. By providing a heater, the cooling circuit 200 is able to heat the battery pack 300, so that the battery pack 300 can maintain a proper operating temperature even in a low temperature environment. In the embodiment, the heater is a PTC heater, and the PTC heater has the advantages of small thermal resistance and high heat exchange efficiency. Of course, in other embodiments, other kinds of heaters may be selected and set according to actual needs.

Preferably, the cooling circuit 200 further includes a liquid inlet pipe 250, one end of the liquid inlet pipe 250 is communicated with the water inlet of the expansion tank 210, and the other end is communicated with the liquid outlet of the cooling pipe 310 through the first quick connector 260. The drain line 230 communicates with the inlet of the cooling line 310 via the second quick connector 270. By arranging the first quick connector 260 and the second quick connector 270, the battery pack 300 and the battery cooling system can be quickly assembled and disassembled, and the battery pack 300 can be conveniently disassembled by workers.

Further, the battery cooling system further comprises an electric control system (not shown in the figure), which can automatically control the operation of the refrigeration circuit 100 and the cooling circuit 200 according to the refrigeration/heating request sent by the battery pack 300. Specifically, in the present embodiment, the cooling circuit 200 is provided with the electromagnetic valve 280, the electric control system is electrically connected with the thermal management system in the battery pack 300, the electromagnetic valve 280 and the expansion valve 130, the thermal management system sends a command to the electric control system according to the working condition of the battery pack 300, and the electric control system controls the opening and closing of the electromagnetic valve 280 and the expansion valve 130 according to the command.

As a preferable embodiment, the components in the refrigeration circuit 100 and the components in the cooling circuit 200 are arranged at intervals. This arrangement facilitates heat dissipation and subsequent maintenance as compared to an integrated arrangement.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the utility model. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims

1. The battery cooling system for the battery replacement is characterized by comprising a refrigeration loop (100), a cooling loop (200), a battery pack (300) and a battery replacement base (400), wherein a cooling pipeline (310) is arranged in the battery pack (300), and the refrigeration loop (100) and the cooling loop (200) are both arranged on the battery replacement base (400) or a vehicle-mounted chassis;

the refrigerating circuit (100) is used for exchanging heat with cooling liquid in the cooling circuit (200) so as to reduce the temperature of the cooling liquid, the water inlet of the cooling circuit (200) is communicated with the liquid outlet of the cooling pipeline (310), and the water outlet of the cooling circuit (200) is communicated with the liquid inlet of the cooling pipeline (310).

2. The battery cooling system according to claim 1, wherein the refrigeration circuit (100) comprises a compressor (110), a condenser (120), an expansion valve (130) and a heat exchanger (220) connected in sequence.

3. The battery cooling system according to claim 1, wherein the cooling circuit (200) comprises an expansion tank (210) and a heat exchanger (220), and the water outlet of the expansion tank (210) is communicated with the heat exchanger (220) and then communicated with the liquid inlet of the cooling pipeline (310) through a liquid discharge pipeline (230);

the cooling circuit (200) further comprises a water pump (240), the water outlet of the expansion water tank (210) is communicated with the liquid inlet of the water pump (240), and the liquid outlet of the water pump (240) is communicated with the liquid inlet of the heat exchanger (220).

4. A battery cooling system according to claim 3, wherein the drain line (230) is further provided with a heater, the heater being capable of heating the liquid in the drain line (230), and the expansion tank (210) is in communication with the drain line (230) through a deaeration pipe.

5. A battery cooling system according to claim 3, wherein the cooling circuit (200) further comprises a liquid inlet pipe (250), one end of the liquid inlet pipe (250) is communicated with the water inlet of the expansion tank (210), the other end is communicated with the liquid outlet of the cooling pipe (310) through a first quick connector (260), and the liquid discharge pipe (230) is communicated with the liquid inlet of the cooling pipe (310) through a second quick connector (270).

6. The battery cooling system according to any one of claims 1-5, characterized in that the components in the refrigeration circuit (100) and the components in the cooling circuit (200) are arranged at intervals.