CN210378579U - Water-cooling lead and battery pack provided with same - Google Patents

Abstract

The application discloses water-cooling wire and battery package of this water-cooling wire of configuration, wherein the water-cooling wire includes: the cable comprises a wire core made of conductive materials, an inner insulating layer coated outside the wire core, an outer insulating layer sleeved on the periphery of the inner insulating layer, a water-cooling flow channel formed between the outer insulating layer and the inner insulating layer, and a water inlet joint and a water outlet joint which are fixedly connected with the outer insulating layer and communicated with the water-cooling flow channel. This kind of water-cooling wire of this application has quick heat-sinking capability, and its sinle silk serious problem that generates heat when having solved the wire circular telegram.

Description

Water-cooling lead and battery pack provided with same

Technical Field

The application relates to a water-cooling lead and a battery pack with the same.

Background

With the development of new energy automobiles, the acceptance of the market for electric automobiles is gradually improved, and people have higher and higher demands for high energy density and high output power electric automobiles. And the electric motor car of high demand except needing high performance electricity core, other PACK materials are equally important, like electric automobile's blood vessel: and (4) conducting wires.

Under a common household vehicle voltage platform, the rated current of the electric vehicle is near 100-150A, and the requirement can be met by 35 flat copper wires; when the output power of the electric automobile is increased, the rated current is correspondingly increased under the condition that the voltage platform is not changed. The heating power of the wires is certainly increased, and the current carrying capacity of the wires with different specifications is relatively fixed, so that the phenomena of aging, insulation damage, even short circuit and the like can occur when the wires are overloaded for a long time. Therefore, some manufacturers may choose to increase the specification of the copper wire to solve the problem, but when the wire diameter of the wire becomes larger, the bending degree of the wire becomes smaller, and the excessively thick wire poses certain challenges to the internal structure and the assembly process of the battery pack.

Disclosure of Invention

The purpose of the application is: in order to solve the problems, a water-cooling lead capable of quickly dissipating heat and a battery pack with the water-cooling lead are provided.

The technical scheme of the application is as follows:

a water-cooled wire, comprising:

a core of electrically conductive material, and

the inner insulating layer is coated outside the wire core;

further comprising:

an outer insulating layer sleeved on the periphery of the inner insulating layer,

a water-cooling flow channel formed between the outer insulating layer and the inner insulating layer,

and the water inlet joint and the water outlet joint are fixedly connected with the outer insulating layer and are communicated with the water-cooling flow channel.

On the basis of the technical scheme, the water-cooling lead wire further comprises the following preferable scheme:

and the water inlet joint and the water outlet joint are respectively arranged at two ends of the length of the water-cooling lead.

The inner insulating layer is in close contact with the wire core.

And two ends of the length of the wire core are respectively connected with an electric terminal.

And the electric connection terminal is provided with a phase change heat absorption material which is packaged between the inner insulating layer and the outer insulating layer.

The water inlet connector and the water outlet connector are integrally connected with the outer insulating layer.

The wire core is made of copper.

The inner insulating layer and the outer insulating layer are hermetically connected at two ends of the length of the wire core.

A battery pack, comprising:

a battery case, and

the battery module, the lead and the water cooling plate are accommodated in the battery box;

the water cooling plate is in heat conduction connection with the battery module;

the wire is the water-cooling wire with the structure, and the water inlet connector and the water outlet connector are communicated with the water-cooling flow channel in the water-cooling plate.

The application has the advantages that:

of the kind of this application

1. This application has solved that the wire line footpath is less, and the sinle silk serious problem that generates heat.

2. This application has solved wire line footpath oversize, is difficult for the problem of buckling at the battery package.

3. This application has still solved the overheated problem of wire connecting terminal.

4. The water-cooling lead wire and the heat absorption water-cooling plate of the battery pack are combined with each other, and the problem of source of cooling water is solved.

Drawings

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

Fig. 1 is a schematic view of a partial internal structure of a battery pack according to an embodiment of the present application;

FIG. 2 is a rear view of FIG. 1;

FIG. 3 is an enlarged view of section X1 of FIG. 2;

FIG. 4 is an enlarged view of section X2 of FIG. 2;

FIG. 5 is a bottom view of FIG. 1;

FIG. 6 is a sectional view taken along line A-A of FIG. 5;

fig. 7 is an enlarged view of the portion X3 of fig. 6;

wherein: 100-water-cooled lead, 200-water-cooled plate, 101-wire core, 102-inner insulating layer, 103-outer insulating layer, 104-water-cooled runner, 105-water inlet connector, 106-water outlet connector, 107-electric terminal and 108-phase change heat absorbing material.

Detailed Description

The present application will be described in further detail below with reference to the accompanying drawings by way of specific embodiments. The present application may be embodied in many different forms and is not limited to the embodiments described in the present embodiment. The following detailed description is provided to facilitate a more thorough understanding of the present disclosure, and the words used to indicate orientation, top, bottom, left, right, etc. are used solely to describe the illustrated structure in connection with the accompanying figures.

One skilled in the relevant art will recognize, however, that one or more of the specific details can be omitted, or other methods, components, or materials can be used. In some instances, some embodiments are not described or not described in detail.

Furthermore, the technical features, aspects or characteristics described herein may be combined in any suitable manner in one or more embodiments. It will be readily appreciated by those of skill in the art that the order of the steps or operations of the methods associated with the embodiments provided herein may be varied. Thus, any sequence in the figures and examples is for illustrative purposes only and does not imply a requirement in a certain order unless explicitly stated to require a certain order.

The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings).

Referring to fig. 1 to 5, the battery pack in the present embodiment also includes a battery case, a battery module, a water-cooling plate 200, and a lead wire, which are included in the conventional battery pack. The battery module, the water cooling plate 200 and the wires are all accommodated in the battery box, the water cooling plate 200 is in heat conduction contact with the battery module to absorb heat of the battery module, and the wires are connected with the battery module to lead out electric energy outwards. The copper wire of the wire includes a copper core 101 and an insulating layer covering the core and in close contact with the core, and for convenience of describing the detailed structure of the wire and distinguishing the insulating layer from an external insulating layer, the insulating layer is referred to as an inner insulating layer 102. Since the battery box and the battery module do not relate to the invention of the present application, and the battery box and the battery module are not shown in the drawings for clarity of the drawings.

The key improvement of this embodiment is that the wire is a water-cooled wire 100 with a water-cooled structure, and the water supply end of the water-cooled wire 100 is the water-cooled plate 200. Specifically, the water-cooling lead 100 further includes an outer insulating layer 103 disposed around the inner insulating layer 102, the outer insulating layer 103 and the inner insulating layer 102 are separated by a gap so as to form a water-cooling channel 104 for flowing cooling water therebetween, and the outer insulating layer 103 is integrally fixed with a water inlet joint 105 and a water outlet joint 106 (i.e., the water inlet joint 105, the water outlet joint 106 and the outer insulating layer 103 are an integral structure) communicating with the water-cooling channel. The water inlet joint 105 and the water outlet joint 106 communicate with the water-cooling flow passage in the water-cooling plate 200 to obtain the cooling water from the water-cooling plate 200 and to return the cooling water back to the water-cooling plate 200.

During operation, a part of the cooling water flowing to the water cooling plate 200 flows into the water cooling channel 104 of the water cooling lead 100 through the water inlet joint 105, and the cooling water in the water cooling channel 104 absorbs heat of the lead, especially the core 101, and then flows back to the inside of the water cooling plate 200 through the water outlet joint 106.

The water inlet joint 105 and the water outlet joint 106 are respectively arranged at two ends of the length of the water-cooling lead so as to increase the flowing stroke of cooling water in the water-cooling lead and optimize the heat absorption effect.

The two ends of the length of the wire core 101 are respectively connected with an electrical terminal 107 to facilitate the electrical connection of the wire with external electricity. In practical applications, the electrical terminals 107 generate a large amount of heat, and no cooling water flows through the portion, so in this embodiment, the phase change heat absorbing material 108 sealed between the inner insulating layer 102 and the outer insulating layer 103 is disposed at the electrical terminals 107 at both ends, and the heat of the electrical terminals 107 is absorbed by the phase change heat absorbing material 108. Since the phase change heat absorbing material 108 is hermetically sealed between the inner insulating layer 102 and the outer insulating layer 103, even if the phase change heat absorbing material 108 absorbs a large amount of heat and is liquefied by phase change, the liquid phase change heat absorbing material 108 does not flow out and separate from the lead.

The inner insulating layer 102 and the outer insulating layer 103 are hermetically connected at both end portions of the length of the core 101, thereby preventing the cooling water in the liquid cooling flow passage 104 from overflowing.

The above embodiments are only for illustrating the technical concepts and features of the present application, and the purpose of the embodiments is to enable people to understand the content of the present application and implement the present application, and not to limit the protection scope of the present application. All equivalent changes and modifications made according to the spirit of the main technical scheme of the application are covered in the protection scope of the application.

Claims (9)

1. A water-cooled wire (100) comprising:

a core (101) of electrically conductive material, and

an inner insulating layer (102) covering the wire core;

it is characterized by also comprising:

an outer insulating layer (103) sleeved on the periphery of the inner insulating layer (102),

a water-cooling flow channel (104) formed between the outer insulation layer (103) and the inner insulation layer (102),

and the water inlet joint (105) and the water outlet joint (106) are fixedly connected with the outer insulating layer (103) and are communicated with the water-cooling flow channel.

2. The water-cooled wire according to claim 1, wherein the water inlet joint (105) and the water outlet joint (106) are respectively arranged at both ends of the length of the water-cooled wire.

3. The water-cooled wire according to claim 1, wherein the inner insulating layer (102) is in close contact with the wire core (101).

4. The water-cooled lead wire as claimed in claim 1, wherein two ends of the length of the wire core (101) are respectively connected with one terminal (107).

5. The water-cooled lead wire according to claim 4, characterized in that a phase change heat absorption material (108) encapsulated between the inner insulating layer (102) and the outer insulating layer (103) is arranged at the electric terminal (107).

6. The water-cooled wire according to claim 1, wherein the water inlet joint (105) and the water outlet joint (106) are both integrally connected with the outer insulating layer (103).

7. The water-cooled wire according to claim 1, wherein the wire core (101) is copper.

8. The water-cooled conductor as claimed in claim 1, characterized in that the inner insulation layer (102) and the outer insulation layer (103) are sealingly connected at both ends of the length of the core (101).

9. A battery pack, comprising:

a battery case, and

the battery module, the lead and the water cooling plate (200) are accommodated in the battery box;

the water cooling plate (200) is in heat conduction connection with the battery module;

the water-cooling lead wire is characterized in that the lead wire is the water-cooling lead wire according to any one of claims 1 to 8, and the water inlet joint (105) and the water outlet joint (106) are communicated with a water-cooling flow passage in the water-cooling plate (200).

Images