CN211320179U

CN211320179U - Box, battery pack and device

Info

Publication number: CN211320179U
Application number: CN202020189145.1U
Authority: CN
Inventors: 姜利文; 方伍梅
Original assignee: Contemporary Amperex Technology Co Ltd
Current assignee: Contemporary Amperex Technology Co Ltd
Priority date: 2020-02-20
Filing date: 2020-02-20
Publication date: 2020-08-21
Anticipated expiration: 2030-02-20

Abstract

The application relates to the technical field of energy storage devices, in particular to a box body, a battery pack and a device, wherein the box body comprises a box body frame which is used for enclosing to form a cavity; a heat exchange member disposed outside a bottom of the tank frame, the heat exchange member including a plurality of pipes communicated with each other; and a mounting part connected to the case frame, and at least one pipe mounted to the mounting part. In the box body provided by the application, the heat exchange component is arranged on the outer side of the bottom of the box body frame, so that the battery module is prevented from being short-circuited when liquid leakage occurs in a pipeline, the safety of a battery pack is improved, the external space of the box body frame is sufficient, the limitation of the design of the heat exchange component is avoided, the design and the installation of the heat exchange component are facilitated, and the installation difficulty of the heat exchange component is reduced; and the bottom of the box frame and the heat exchange component can generate balanced heat exchange, so that the battery module in the box is ensured to be cooled or heated uniformly, and the service lives of the battery module and the battery pack are prolonged.

Description

Box, battery pack and device

Technical Field

The application relates to the technical field of energy storage devices, in particular to a box body, a battery pack and a device.

Background

In recent years, electric vehicles are rapidly developed, and the electric vehicles are provided with a battery pack for providing power, wherein the battery pack comprises a box body and at least one battery arranged in the box body. The case is one of core components of the battery pack, and a design for thermally managing the battery must be considered in the structural design of the case.

In the prior art, the design of heat management usually adopts an integrated or built-in mode, but for a box body structure of a sheet metal, the integrated water cooling design cannot be carried out due to the corrosion problem at present, so that the integrated water cooling design is greatly limited; if built-in water cooling is adopted, the risk of liquid leakage of the heat management device exists, the battery is short-circuited, and the safety of the battery pack is reduced.

SUMMERY OF THE UTILITY MODEL

The application provides a box, group battery and device to in the design and the installation of heat exchange component, improve the security of group battery simultaneously.

A first aspect of the application provides a box body, which comprises a box body frame, a box body frame and a box body frame, wherein the box body frame is used for enclosing to form a cavity;

a heat exchange member disposed outside a bottom of the tank frame, the heat exchange member including a plurality of pipes communicating with each other;

and a mounting part connected to the case frame, wherein at least one of the pipes is mounted to the mounting part.

Optionally, the mounting member comprises a receiving cavity;

at least one of the conduits is received in the receiving cavity.

Optionally, the mounting part includes a first bending part, a second bending part and a third bending part connected in sequence;

the first bending part, the second bending part and the third bending part are enclosed to form the accommodating cavity.

Optionally, the box further comprises a limiting component for limiting at least one of the pipes in the accommodating cavity.

Optionally, the limiting component includes a limiting beam, the limiting beam is connected to the box frame and/or the mounting component, and the limiting beam is disposed at the bottom of the accommodating cavity.

Optionally, the conduit abuts against the stop beam.

Optionally, the conduit comprises a first conduit and a second conduit arranged in a spaced apart relationship;

the first pipeline and/or the second pipeline are/is accommodated in the accommodating cavity.

Optionally, the conduit further comprises a third conduit;

two ends of the third pipeline are respectively connected to the first pipeline and the second pipeline;

an accommodating groove is formed at the bottom of the box frame, and the third pipeline is accommodated in the accommodating groove.

Optionally, the box body further comprises a bottom guard plate, and the bottom guard plate is arranged on one side of the heat exchange member, which faces away from the box body frame, and is connected with the box body frame.

The second aspect of the present application provides a battery pack, which includes the above-mentioned case, and a battery accommodated in a cavity of the case.

A third aspect of the present application provides an apparatus comprising the above battery pack for providing electrical energy.

The technical scheme provided by the application can achieve the following beneficial effects:

the box body provided by the application comprises a box body frame, a heat exchange component and a mounting part for connecting the heat exchange component with the box body frame, wherein the box body frame is enclosed into a cavity, a battery module is placed in the cavity, the heat exchange component is arranged on the outer side of the bottom of the box body frame and comprises a plurality of pipelines which are mutually communicated, the mounting part is matched with at least one pipeline to realize the connection of the heat exchange component and the box body frame, the planes of the pipelines in the heat exchange component are approximately parallel to the plane of the bottom of the box body frame, so that the cooling surface or the heating surface formed by the heat exchange component at the bottom of the box body frame is uniformly distributed, the balanced heat exchange can be generated between the bottom of the box body frame and the heat exchange component, the condition that the local temperature at the bottom of the box body frame is too high or too low is avoided, and the, thereby improving the service life of the battery and the battery pack.

And, set up the heat exchange component in the bottom outside of box frame, the battery takes place the short circuit when having avoided the pipeline to take place the weeping, has improved the security of group battery to box frame exterior space is sufficient, has avoided the limitation of heat exchange component design, and the design and the installation of the heat exchange component of being convenient for have reduced the installation degree of difficulty of heat exchange component.

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 diagram of a box provided in an embodiment of the present application;

FIG. 2 is a side view of a housing provided in an embodiment of the present application;

FIG. 3 is a partial enlarged view at A;

FIG. 4 is a schematic structural diagram of a mounting component in a box according to an embodiment of the present disclosure;

FIG. 5 is a schematic structural diagram of a heat exchange member in a box according to an embodiment of the present disclosure.

Reference numerals:

10-a box body;

1-a box frame;

11-a holding tank;

2-a heat exchange member;

21-a pipeline;

211-a first conduit;

212-a second conduit;

213-a third conduit;

3-mounting the component;

31-a containment chamber;

32-a first bend;

33-a second fold;

34-a third bent part;

35-a fourth bend;

36-a fifth fold;

37-a sixth fold;

4-a stop member;

41-a limit beam;

5-bottom guard board.

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.

Detailed Description

The technical solutions of the present application will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the examples of this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

It should be noted that the terms "upper", "lower", "left", "right", and the like used in the embodiments of the present application are described in terms of the angles shown in the drawings, and should not be construed as limiting the embodiments of the present application. In addition, in this context, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on "or" under "the other element or be indirectly on" or "under" the other element via an intermediate element.

The utility model provides a device, the device can be mobile devices such as vehicle, energy storage electricity cabinet, boats and ships, small aircraft, and the device includes the power supply, and the power supply is used for providing drive power for the device. The driving force of the device can be electric energy, and can also include electric energy and other energy sources (such as mechanical energy), the power source can be a battery pack, and the power source can also be a battery pack, an engine and the like. Therefore, a device capable of providing electric energy using a battery pack is within the scope of the present application. Taking the vehicle as an example, the vehicle is a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, or may be a hybrid vehicle or a range-extended vehicle, etc. The vehicle includes a battery pack as a power source of the vehicle, and a vehicle body in which the battery pack is provided. The vehicle main body is provided with a driving motor, the driving motor is electrically connected with the battery pack, the battery pack provides electric energy, and the driving motor is connected with wheels on the vehicle main body through a transmission mechanism so as to drive the automobile to move forward.

The battery pack includes a case 10 and at least one battery disposed in a cavity of the case 10, and the case 10 may be made of aluminum, aluminum alloy, or other metal material. In one possible design, the case 10 may include a lower case and an upper case, the lower case is of an open-top structure, the upper case has a size corresponding to that of the opening at the top of the lower case, the upper case may be fixed to the opening by a fixing member such as a bolt, and the upper case and the lower case enclose a cavity for accommodating the battery. Meanwhile, in order to improve the sealing performance of the case 10, a sealing member may be further provided between the upper case cover and the lower case body. A plurality of batteries may be received in a cavity of the case 10 of the battery pack.

Fig. 1 is a schematic structural diagram of a box provided in an embodiment of the present application, and as shown in fig. 1, an embodiment of the present application provides a box 10, including: the box body frame 1 is used for enclosing to form a cavity; a heat exchange member 2, the heat exchange member 2 being disposed outside the bottom of the tank frame 1, the heat exchange member 2 including a plurality of pipes 21 communicating with each other; and a mounting member 3 connected to the cabinet frame 1, wherein at least one duct 21 is mounted to the mounting member 3.

The box 10 provided by the embodiment of the application comprises a box frame 1, a heat exchange member 2 and a mounting part 3 for connecting the heat exchange member 2 with the box frame 1, wherein the box frame 1 encloses a cavity, a battery can be placed in the cavity, the heat exchange member 2 is arranged at the outer side of the bottom of the box frame 1, the heat exchange member 2 comprises a plurality of pipelines 21 which are communicated with each other, the heat exchange member 2 is used for heating or cooling the battery, the mounting part 3 is matched with at least one pipeline 21 to realize the connection between the heat exchange member 2 and the box frame 1, and the plane where the plurality of pipelines 21 in the heat exchange member 2 are located is approximately parallel to the plane where the bottom of the box frame 1 is located, so that the cooling surface or the heated surface formed by the heat exchange member 2 at the bottom of the box frame 1 is distributed evenly, and the bottom of the box frame 1 and the heat exchange member 2 can generate balanced heat exchange, the situation that the local temperature at the bottom of the box body frame 1 is too high or too low is avoided, and the battery module in the box body 10 is ensured to be cooled or heated uniformly, so that the service lives of the battery and the battery pack are prolonged.

And, set up heat exchange component 2 in the bottom outside of box frame 1, the battery takes place the short circuit when having avoided pipeline 21 to take place the weeping, has improved the security of group battery to box frame 1 exterior space is sufficient, has avoided the limitation of heat exchange component 2 design, and the design and the installation of heat exchange component 2 of being convenient for have reduced the installation degree of difficulty of heat exchange component 2.

In some embodiments, the mounting part 3 comprises a housing cavity 31; the duct 21 is received in the receiving chamber 31 to cooperate the heat exchange member 2 with the mounting part 3 to achieve connection with the tank frame 1.

FIG. 2 is a side view of a housing provided in an embodiment of the present application; FIG. 3 is a partial enlarged view at A; fig. 4 is a schematic structural diagram of a mounting component in a box provided in an embodiment of the present application. As shown in fig. 2 to 4, as a possible implementation manner, the mounting part 3 includes a first bent portion 32, a second bent portion 33, and a third bent portion 34 connected in sequence; the first bent portion 32, the second bent portion 33 and the third bent portion 34 enclose an accommodating cavity 31, and the at least one pipe 21 is accommodated in the accommodating cavity 31. By arranging the duct 21 in the accommodating cavity 31, the duct 21 can be protected, and the duct 21 is prevented from being damaged by external impact, so that the heating or cooling effect of the heat exchange member 2 on the battery is affected.

In the mounting component 3, the first bent portion 32, the second bent portion 33, and the third bent portion 34 enclose an n-type structure to form the accommodating cavity 31. The first bending part 32 may be connected to the case frame 1 to connect the mounting part 3 to the case frame 1, and the connection method may be welding.

In some embodiments, the box 10 further comprises a limiting member 4 for limiting the at least one duct 21 inside the housing chamber 31.

In the embodiment of the present application, after the heat exchange member 2 is placed in the accommodating chamber 31, the opening of the accommodating chamber 31 in the direction away from the battery is blocked by the limiting part 4, so that the degree of freedom of the heat exchange member 2 in the height direction (Z direction) of the battery pack is limited, and the stable connection of the heat exchange member 2 and the box frame 1 is ensured.

Specifically, the limiting part 4 comprises a limiting beam 41, the limiting beam 41 is connected to the box frame 1 and/or the mounting part 3, and the limiting beam 41 is arranged at the bottom of the accommodating cavity 31.

The limiting component 4 comprises a plurality of limiting beams 41, and the limiting beams 41 can be arranged at the bottom of the accommodating cavity 31 by being connected with the box body frame 1 or directly connected with the mounting component 3. The limiting beams 41 can be uniformly arranged along the length direction (X direction) of the battery pack or arranged according to a certain set position, the end parts of the limiting beams 41 are arranged at the bottom of the accommodating cavity 31, the accommodating cavity 31 is blocked, so that the heat exchange member 2 is stably matched with the mounting part 3, and the pipeline 21 in the accommodating cavity 31 abuts against the limiting beams 41 under the action of gravity.

In some embodiments, the mounting member 3 includes a fourth bent portion 35; the fourth bent portion 35 is connected to the first bent portion 32 and the case frame 1, respectively.

In the above embodiment, the mounting member 3 further includes the fourth bent portion 35, as shown in fig. 3, the fourth bent portion 35 may be connected to the surface of the case frame 1 away from the battery, and by connecting the first bent portion 32 and the fourth bent portion 35 to the case frame 1, the contact area between the mounting member 3 and the case frame 1 is increased, and the connection stability between the mounting member 3 and the case frame 1 is improved.

In some embodiments, the second bent portion 33 is connected to the box frame 1, and the first bent portion 32, the second bent portion 33 and the fourth bent portion 35 are connected to the box frame 1, so that the stability of the connection between the mounting part 3 and the box frame 1 is achieved.

In the embodiment of the present application, limit beam 41 is connected with installation component 3, in order to hold chamber 31 and carry out the shutoff, namely, installation component 3 receives the effort of limit beam 41 to the direction of keeping away from the battery, again because pipeline 21 who holds in the chamber 31 supports and leans on in limit beam 41, namely, limit beam 41 includes the gravity of heat exchange component 2 in the effort that installation component 3 produced, consequently, through all being connected first kink 32, second kink 33 and fourth kink 35 with box frame 1, the stability of being connected between installation component 3 and the box frame 1 has been increased, the bearing capacity of installation component 3 has also been increased, the structural stability and the reliability of group battery have been guaranteed.

In some embodiments, the mounting component 3 further comprises a fifth fold 36; the fifth bent portion 36 is connected to the third bent portion 34 and the stopper member 4, respectively.

The fifth bent portion 36 provided in the mounting portion serves as a connecting member for connecting the stopper member 4 and the mounting member 3, and specifically, as shown in fig. 3, the plane on which the fifth bent portion 36 is located extends in the width direction (Y direction) of the battery pack, that is, is substantially parallel to the surface of the stopper beam 41 facing the heat exchange member 2, so as to connect the fifth bent portion 36 and the stopper beam 41, and the connecting manner may be welding.

In some embodiments, the mounting component 3 further comprises a sixth bend 37; the sixth bent portion 37 is connected to the fifth bent portion 36 and abuts against one end of the limiting member 4 in the width direction (Y direction) of the box frame 1.

The mounting component 3 further includes a sixth bending portion 37, the sixth bending portion 37 extends along the height direction (Z direction) of the battery pack to the direction away from the battery, and at least one end of the two ends of the box frame 1 along the width direction (Y direction) of the battery pack is provided with the sixth bending portion 37, so that when the limiting component 4 is connected with the mounting component 3, the sixth bending portion 37 can prevent the limiting component 4 from deviating, thereby improving the efficiency and yield of the connection between the limiting component 4 and the mounting component 3.

Fig. 5 is a schematic structural diagram of a heat exchange member in a box provided in an embodiment of the present application, and as shown in fig. 2 to 5, as a possible implementation manner, a duct 21 includes a first duct 211 and a second duct 212 separately provided; the first pipe 211 and/or the second pipe 212 are accommodated in the accommodation chamber 31.

In the embodiment of the present application, the mounting parts 3 are provided at both ends of the case frame 1 in the width direction (Y direction) of the battery pack, and the duct 21 of the heat exchange member 2 located at both ends of the case frame 1 in the width direction of the battery pack includes the first duct 211 and the second duct 212 which are separately provided; the first pipe 211 and/or the second pipe 212 are received in the receiving chamber 31 to connect the heat exchange member 2 with the case frame 1.

The pipes 21 are arranged at the two ends of the box frame 1, so that the contact area between the box body 10 and the heat exchange member 2 is increased, the heat exchange speed between the heat exchange member 2 and the battery modules in the box body 10 is increased, and meanwhile, the uniformity of heat exchange of the box frame 1 is also ensured.

Specifically, the duct 21 further comprises a third duct 213; both ends of the third pipe 213 are connected to the first pipe 211 and the second pipe 212, respectively; the bottom of the case frame 1 is formed with a receiving groove 11, and the third pipe 213 is received in the receiving groove 11.

In the heat exchange member 2, the first pipe 211 and the second pipe 212 are communicated through the third pipe 213, so that the heat exchange fluid in the heat exchange member 2 can enter from the first pipe 211, flow into the second pipe 212 through the first pipe 211 and the third pipe 213, and flow out from the second pipe 212, thereby realizing circulation of the heat exchange fluid in the heat exchange member 2. Wherein, the heat exchange fluid can be liquid or gas and is used for heating or cooling the battery.

Through the third pipeline 213, the cooling surface or the heating surface formed by the heat exchange component 2 at the bottom of the box body frame 1 is distributed uniformly, so that the bottom of the box body frame 1 and the heat exchange component 2 can generate balanced heat exchange, the situation that the local temperature at the bottom of the box body frame 1 is too high or too low is avoided, the batteries in the box body 10 are cooled or heated uniformly, and the service lives of the batteries and the battery pack are prolonged.

In order to save the space required for the heat exchange member 2, a receiving groove 11 is formed at the bottom of the case frame 1, the third pipe 213 is placed in the receiving groove 11, and in addition, by providing the receiving groove 11, the distance between the third pipe 213 and the battery is reduced, and the heat exchange speed and efficiency are improved.

In order to further protect the heat exchange member 2 and prevent the heat exchange member 2 and the mounting portion from being damaged by external force, in this embodiment, a bottom protection plate 5 is disposed on a side of the heat exchange member 2 away from the box frame 1, and the bottom protection plate 5 is connected to the box frame 1, so that the heat exchange member 2 is disposed between the bottom protection plate 5 and the box frame 1, the heat exchange member 2 is prevented from being exposed outside the battery pack, and the heat exchange member 2 is prevented from leaking under the external force.

The connection mode of the bottom guard plate 5 and the box body frame 1 can be welding, and the welding connection mode is simple in operation, high in connection stability and low in cost.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A cabinet (10), comprising:

the box body frame (1) is used for enclosing to form a cavity;

a heat exchange member (2), the heat exchange member (2) being disposed outside a bottom of the tank frame (1), the heat exchange member (2) including a plurality of pipes (21) communicating with each other;

and a mounting member (3) connected to the box frame (1), wherein at least one of the pipes (21) is mounted to the mounting member (3).

2. A cabinet (10) as claimed in claim 1, wherein said mounting member (3) comprises a housing chamber (31);

at least one of the conduits (21) is housed in the housing chamber (31).

3. A cabinet (10) as claimed in claim 2, wherein the mounting member (3) comprises a first bent portion (32), a second bent portion (33) and a third bent portion (34) connected in sequence;

the first bent part (32), the second bent part (33) and the third bent part (34) enclose the accommodating cavity (31).

4. Tank (10) according to claim 2, characterized in that said tank (10) further comprises a retaining element (4) for retaining at least one of said ducts (21) inside said housing chamber (31).

5. A cabinet (10) as claimed in claim 4, wherein the restricting member (4) comprises a restricting beam (41), the restricting beam (41) being attached to the cabinet frame (1) and/or the mounting member (3), and the restricting beam (41) being disposed at the bottom of the receiving cavity (31).

6. Box (10) according to claim 5, characterised in that said duct (21) abuts against said stop beam (41).

7. A tank (10) according to any one of claims 2 to 6, characterized in that said duct (21) comprises a first duct (211) and a second duct (212) arranged in a spaced-apart manner;

the first duct (211) and/or the second duct (212) are housed in the housing chamber (31).

8. Tank (10) according to claim 7, characterized in that said duct (21) further comprises a third duct (213);

both ends of the third pipe (213) are connected to the first pipe (211) and the second pipe (212), respectively;

an accommodating groove (11) is formed at the bottom of the case frame (1), and the third pipe (213) is accommodated in the accommodating groove (11).

9. A tank (10) according to any of claims 1 to 6, characterized in that the tank (10) further comprises a bottom shield (5), the bottom shield (5) being arranged on the side of the heat exchange member (2) facing away from the tank frame (1) and being connected to the tank frame (1).

10. A battery pack, characterized by comprising a case (10) according to any one of claims 1 to 9, and a battery housed in a cavity of the case (10).

11. An apparatus comprising a battery according to claim 10, the battery being for providing electrical energy.