CN215869541U

CN215869541U - Battery module with liquid cooling heat radiation structure

Info

Publication number: CN215869541U
Application number: CN202121544049.5U
Authority: CN
Inventors: 熊杰; 张晓波; 李响; 于海波
Original assignee: NR Electric Co Ltd; NR Engineering Co Ltd
Current assignee: NR Electric Co Ltd; NR Engineering Co Ltd; Changzhou NR Electric Power Electronics Co Ltd
Priority date: 2021-07-07
Filing date: 2021-07-07
Publication date: 2022-02-18
Anticipated expiration: 2031-07-07

Abstract

The application discloses battery module with liquid cooling heat radiation structure. A battery module with liquid cooling heat radiation structure includes: the bottom radiator comprises a cooling liquid inlet, a cooling liquid outlet and a radiator main body, wherein the radiator main body is flat, dense and continuous liquid channels are arranged in the radiator main body, and cooling liquid is filled in the liquid channels; at least one battery package, every battery package includes a plurality of batteries that the array set up, at least one battery package sets up on the bottom radiator, be provided with at least one first temperature-uniforming plate respectively between the contact surface of adjacent battery in a plurality of batteries. The battery module with the liquid cooling heat radiation structure has the advantages of compact structure, convenience in use and good heat radiation performance, so that the service life of the battery is prolonged, and a new solution is provided for the problems of the existing liquid cooling battery module.

Description

Battery module with liquid cooling heat radiation structure

Technical Field

This application belongs to electric energy storage technical field, particularly, relates to a battery module with liquid cooling heat radiation structure.

Background

With the construction of a novel power system mainly based on new energy, the permeability of the new energy in the power system is improved. Since the energy storage battery module using new energy has volatility, interval and randomness, a great challenge is undoubtedly brought to the safe and stable operation of the power system. The energy storage battery module can be used for each link of transmission, transformation, distribution and utilization of the power system, provides various services such as peak regulation, frequency modulation, voltage regulation, standby and the like for the power system, and further improves the flexibility, economy and safety of power.

However, in the process of charging and discharging the energy storage battery module, heat is generated, and if the generated heat is not discharged in time, the performance of the battery module is affected, and even danger is caused. The existing liquid cooling heat dissipation structure of the energy storage battery module generally adds a radiator at the bottom of the battery, and the mode occupies the internal space of the module, so that the space utilization rate is low, the assembly relationship between the module bracket and the liquid cooling system part is complex, the assembly efficiency is low, and the cost is high. Meanwhile, the radiator is added at the bottom of the energy storage battery module to cause the overall temperature rise of the battery to be uneven, so that the local high temperature at the top of the battery is caused, and potential safety hazards exist.

Therefore, a new liquid-cooled heat dissipation structure of a battery module is needed, which has a compact structure, is convenient to use, has good heat dissipation performance, and thus prolongs the service life of the battery, and provides a new solution for the problems of the existing liquid-cooled battery module.

In this background section, the above information disclosed is only for enhancement of understanding of the background of the application and therefore it may contain prior art information that does not constitute a part of the common general knowledge of a person skilled in the art.

SUMMERY OF THE UTILITY MODEL

This application aims at providing a battery module with liquid cooling heat radiation structure, can provide stable even efficient radiating effect for the battery side, compact structure, and the security performance is high to improve the life of battery greatly.

The application provides a battery module with liquid cooling heat radiation structure, include: the bottom radiator comprises a cooling liquid inlet, a cooling liquid outlet and a radiator main body, wherein dense and continuous liquid channels are arranged in the radiator main body, and cooling liquid is filled in the liquid channels;

at least one battery package, every battery package includes a plurality of batteries that the array set up, at least one battery package sets up on the bottom radiator, be provided with at least one first temperature-uniforming plate respectively between the contact surface of adjacent battery in a plurality of batteries.

According to some embodiments, the bottom heat sink is made of an aluminum alloy or a copper material.

According to some embodiments, the bottom heat sink is formed by splicing a plurality of continuous flow channel raw materials or integrally welding an aluminum block with flow channels.

According to some embodiments, the cooling fluid is water or mineral oil.

According to some embodiments, the bottom heat sink is fixed to the bottom of the at least one battery pack by screws.

According to some embodiments, each first temperature equalizing plate is L-shaped, is partially arranged between the contact surfaces of the adjacent batteries in the plurality of batteries, and is partially attached to the side wall of the at least one battery pack. .

According to some embodiments, each of the first temperature equalizing plates is a flat plate, and the adjacent first temperature equalizing plates are arranged in parallel.

According to some embodiments, the plurality of cells are attached to the at least one first vapor plate by rolling.

According to some embodiments, a drain opening is provided near the coolant inlet and/or the coolant outlet.

According to some embodiments, the plurality of cells are all square cells, and the length, the width and the height of the plurality of cells are all consistent.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

Fig. 1 is a schematic structural view illustrating a battery module having a liquid-cooled heat dissipation structure according to an exemplary embodiment of the present application.

Fig. 2 shows a schematic structural view of a bottom heat sink according to an example embodiment of the present application.

Fig. 3 illustrates a schematic structure diagram of a battery module having a liquid-cooled heat dissipation structure according to some embodiments of the present application.

Fig. 4 illustrates a side view of a battery pack according to some embodiments of the present application.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals denote the same or similar parts in the drawings, and thus, a repetitive description thereof will be omitted.

The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the disclosure. One skilled in the relevant art will recognize, however, that the embodiments of the disclosure can be practiced without one or more of the specific details, or with other means, components, materials, devices, or the like. In such cases, well-known structures, methods, devices, implementations, materials, or operations are not shown or described in detail.

The flow charts shown in the drawings are merely illustrative and do not necessarily include all of the contents and operations/steps, nor do they necessarily have to be performed in the order described. For example, some operations/steps may be decomposed, and some operations/steps may be combined or partially combined, so that the actual execution sequence may be changed according to the actual situation.

The terms "first," "second," and the like in the description and claims of the present application and in the above-described drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

The application provides a battery module with liquid cooling heat radiation structure, can provide stable even efficient radiating effect for the battery side, compact structure, the security performance is high to improve the life of battery greatly.

Hereinafter, a battery module having a liquid-cooled heat dissipation structure according to an embodiment of the present application will be described in detail with reference to the accompanying drawings.

Referring to fig. 1, the battery module having a liquid-cooled heat dissipation structure of the exemplary embodiment includes a bottom heat sink 101 and at least one battery pack 103.

As shown in fig. 1, the bottom heat sink 101 includes a coolant inlet 1011, a coolant outlet 1013, and a heat sink main body 1015, wherein the heat sink main body 1015 is flat, and dense and continuous liquid channels (not shown) are arranged inside the heat sink main body 1015, and the liquid channels are filled with coolant;

at least one battery pack 103, each battery pack including a plurality of batteries 1031 arranged in an array, at least one battery pack 103 arranged on the bottom heat sink 101, at least one first temperature equalizing plate 1033 arranged between contact surfaces of adjacent batteries 1031, respectively.

According to an example embodiment, each battery 1031 within at least one first battery pack 103 is a prismatic battery. In some embodiments, the battery in the battery pack may also be a cylindrical battery, and the shape and the attaching state of the liquid-cooled partition plate are adaptively changed according to the specific shape of the battery, which is not limited to the shape of the battery. In order to ensure the uniformity of the heat dissipation effect of the liquid cooling heat dissipation structure of the battery module, the length, the width and the height of each battery 1031 in at least one first battery pack 103 are uniform, so as to realize the balance control of the liquid cooling heat dissipation.

According to an exemplary embodiment, a liquid uniform structure (not shown) is disposed in the bottom heat sink 101, and the liquid uniform structure is used to keep the flow rate of the liquid in the bottom heat sink 101 consistent, so as to ensure the heat dissipation balance of the battery module during the liquid cooling heat dissipation process.

According to an exemplary embodiment, the cooling liquid used for heat dissipation is water or mineral oil, and in order to ensure uniform heat dissipation of the liquid-cooled heat dissipation structure, the liquid component filled in the heat dissipation structure should be uniform and unique.

According to an example embodiment, the main structure of the bottom heat sink 101 is an aluminum alloy material or a copper material, and the good thermal conductivity of the aluminum alloy material or the copper material can avoid the bottom heat sink 101 from generating heat during heat dissipation.

According to an exemplary embodiment, the bottom heat sink 101 is formed by splicing a plurality of continuous flow channel profiles or integrally welded from a flow channel-bearing raw material.

According to an example embodiment, the bottom heat sink 101 is fixed to the bottom of the at least one battery pack 103 by screws. In some embodiments of the present application, the bottom heat sink 101 may also be fixed to the bottom of the at least one battery pack 103 by a fastener such as a rivet or a rolled tape, but the present application is not limited to the fixing manner of the bottom heat sink 101.

According to an exemplary embodiment, the first temperature equalizing plate 1033 is disposed between the adjacent batteries, for preventing the phenomena of low bottom temperature and high top temperature of the batteries due to the heat dissipation effect of the bottom heat sink, and for achieving a better temperature equalizing and heat dissipation effect of the entire battery pack.

According to some embodiments, the bottom heat sink 101 itself may serve as the bottom structure of the battery module, and the at least one battery pack 103 is mounted on the bottom heat sink 101.

Referring to fig. 2, the example embodiment bottom heat sink includes a coolant inlet 1011, a coolant outlet 1013, a heat sink body 1015, and a drain opening 1017.

As shown in fig. 2, the coolant inlet 1011 and the coolant outlet 1013 are provided on the same side of the heat sink main body 1015, and the drain ports are provided near the coolant inlet 1011 and the coolant outlet 1013.

According to the exemplary embodiment, the coolant inlet 1011 and the coolant outlet 1013 are disposed on the same side of the heat sink main body 1015, which can achieve the simultaneous addition and recovery of the coolant on one side of the battery module, and thus can reduce the space occupancy of the coolant device. According to some embodiments of the present application, a coolant recovery device is disposed near the coolant inlet 1011 and the coolant outlet 1013, and the coolant discharged through the coolant outlet 1013 is cooled by placing the coolant into the bottom heat sink through the coolant inlet 1011 again, so as to achieve secondary utilization of the coolant.

According to the exemplary embodiment, the coolant inlet 1011 and the coolant outlet 1013 are disposed on the same side of the heat sink body 1015, which facilitates the liquid cooling pipe arrangement inside the bottom heat sink, and enables more dense and continuous liquid channels to be disposed in a unit area, thereby achieving better liquid cooling effect of the battery pack.

According to an exemplary embodiment, the drain port 1017 is disposed near the outlet of the coolant inlet 1011 and/or the coolant outlet 1013, when the liquid cooling system is in operation, since the coolant is heated in the liquid cooling pipeline, there is a phenomenon that the liquid level of the coolant rises, and the drain port 1017 is used to prevent the coolant from overflowing the liquid cooling pipeline, thereby ensuring the normal operation of the bottom radiator.

Referring to fig. 3, the battery module having a liquid-cooled heat dissipation structure of some embodiments includes a bottom heat sink and a battery pack 103.

As shown in fig. 3, one battery pack 103 includes eight batteries 1031 arranged in an array, one battery pack 103 is arranged on the bottom heat sink 101, and seven first temperature equalizing plates 1033 are arranged between contact surfaces of adjacent batteries 1031.

According to some embodiments of the present application, the first temperature equalizing plate 1033 is disposed between adjacent batteries, for preventing the phenomena of low temperature at the bottom surface and high temperature at the top end of the battery caused by the heat dissipation effect of the bottom surface heat sink, and for making the battery pack as a whole obtain a better heat dissipation effect at the equalized temperature.

According to the technical concept of the application, in the actual use process, the positions and the shapes of the temperature equalizing plates are flexibly arranged according to different use scenes and requirements.

According to some embodiments of the present application, each first temperature equalizing plate is L-shaped, partially disposed between the contact surfaces of adjacent batteries in the plurality of batteries, and partially attached to the sidewall of the at least one battery pack. Furthermore, the adjacent first temperature-uniforming plates are in an end-to-end connection and staggered arrangement state, and the parts, attached to the side wall of the battery pack, of the adjacent first temperature-uniforming plates are respectively located on the opposite side walls of the battery pack, so that the first temperature-uniforming plates are integrally arranged in a bow-like shape, the arrangement cost of the temperature-uniforming plates can be saved, and meanwhile, the local heat concentration of the battery is avoided.

According to another embodiment of the application, each first temperature equalizing plate is flat, the adjacent first temperature equalizing plates are respectively attached between the batteries and are arranged in parallel, and the temperature equalizing plates are not arranged on the side walls of the battery pack.

According to the technical concept of the application, the number of the battery packs and the number of the batteries contained in the battery packs are not limited, the number of the battery packs and the number of the batteries contained in the battery packs can be flexibly configured according to use requirements, and the number and the arrangement positions of the liquid cooling partition plates are correspondingly and flexibly set.

Referring to fig. 4, the batteries in the battery pack of some embodiments are attached to the first temperature equalization plate by rolled strips 201.

According to some embodiments of the application, the battery in the battery pack can also be attached to the first temperature-uniforming plate through fasteners such as a clamping hoop, a throat hoop and a clamping sleeve, and the application does not specifically limit the fastening mode between the battery pack and the temperature-uniforming plate.

The embodiments of the present application have been described and illustrated in detail above. It should be clearly understood that this application describes how to make and use particular examples, but the application is not limited to any details of these examples. Rather, these principles can be applied to many other embodiments based on the teachings of the present disclosure.

Through the description of the example embodiments, those skilled in the art will readily appreciate that the technical solutions according to the embodiments of the present application have at least one or more of the following advantages.

According to some embodiments of the application, the battery module with the liquid cooling heat radiation structure adopts a bottom surface liquid cooling heat radiation mode, is compact in structure and good in heat radiation effect, solves the phenomenon of local high temperature in air cooling heat radiation, is practical and convenient, and provides a new solution for heat radiation of the battery module.

According to some embodiments of the application, a liquid uniform velocity structure is arranged in the bottom radiator of the application, the liquid uniform velocity structure is used for keeping the liquid flow velocity between the liquid cooling partition plates consistent, and the heat dissipation balance of the battery module is guaranteed in the liquid cooling heat dissipation process.

According to some embodiments of the application, a temperature equalizing plate is arranged between the adjacent battery packs and used for equalizing the temperature between the adjacent battery packs, and the influence of the temperature difference between the battery packs on the heat dissipation effect of the liquid cooling heat dissipation structure is avoided.

Exemplary embodiments of the present application are specifically illustrated and described above. It is to be understood that the application is not limited to the details of construction, arrangement, or method of implementation described herein; on the contrary, the intention is to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims

1. The utility model provides a battery module with liquid cooling heat radiation structure which characterized in that includes:

the bottom radiator comprises a cooling liquid inlet, a cooling liquid outlet and a radiator main body, wherein dense and continuous liquid channels are arranged in the radiator main body, and cooling liquid is filled in the liquid channels;

2. The battery module as set forth in claim 1, wherein the bottom heat sink is made of an aluminum alloy or a copper material.

3. The battery module as set forth in claim 2, wherein the bottom heat sink is formed by splicing a plurality of continuous flow channel profiles or integrally welding raw materials with flow channels.

4. The battery module according to claim 1, wherein the coolant is water or mineral oil.

5. The battery module according to claim 1, wherein the bottom heat sink is fixed to the bottom of the at least one battery pack by screws.

6. The battery module according to claim 1,

each first temperature equalizing plate is L-shaped, part of each first temperature equalizing plate is arranged between the contact surfaces of the adjacent batteries in the plurality of batteries, and part of each first temperature equalizing plate is attached to the side wall of the at least one battery pack.

7. The battery module according to claim 1,

each first temperature equalizing plate is flat, and the adjacent first temperature equalizing plates are arranged in parallel.

8. The battery module according to claim 1, wherein the plurality of cells are attached to the at least one first vapor chamber by rolling.

9. The battery module according to claim 1, wherein a water drain port is provided near the coolant inlet and/or the coolant outlet.

10. The battery module according to claim 1, wherein the plurality of cells are all prismatic cells, and the plurality of cells have the same length, width and height.