CN216354439U

CN216354439U - Heating device, battery and electric equipment

Info

Publication number: CN216354439U
Application number: CN202122637500.4U
Authority: CN
Inventors: 李兴星; 何润泳; 黄小腾; 陈智明
Original assignee: Contemporary Amperex Technology Co Ltd
Current assignee: Contemporary Amperex Technology Co Ltd
Priority date: 2021-10-29
Filing date: 2021-10-29
Publication date: 2022-04-19
Anticipated expiration: 2031-10-29
Also published as: WO2023071099A1

Abstract

The application provides a heating device, battery and consumer, heating device includes: the heat conduction pipe is provided with at least one end which is opened to form a port; a heater wire disposed within the heat conductive tube, both ends of the heater wire protruding from the port; an insulation shield mounted to the port for isolating the heater wire from the port. This application sets up insulating protection spare at the tip of heat pipe and keeps apart heater wire and port, on the one hand, can avoid the port of heat pipe because of burr, cutting edge of a knife or a sword limit that probably exist unusual fish tail heater wire, cause the problem of heater wire insulation inefficacy, on the other hand, can avoid the port of heat pipe to produce the problem that the shearing force made the heater wire produce the damage because of deformation to the heater wire to effectively protect the insulating nature of heater wire.

Description

Heating device, battery and electric equipment

Technical Field

The utility model relates to the technical field of battery heating, in particular to a heating device, a battery and electric equipment.

Background

Energy conservation and emission reduction are the key points of sustainable development of the automobile industry, and electric vehicles become important components of the sustainable development of the automobile industry due to the advantages of energy conservation and environmental protection. For electric vehicles, battery technology is an important factor in its development.

The temperature has an important influence on the performance of the battery, the energy of the battery cannot be fully released in a low-temperature environment, and potential safety hazards exist during charging. In order to ensure that the battery can normally work in a low-temperature environment, the battery is generally required to be heated to reach a normal working temperature range. However, the prior art battery heating device is prone to insulation failure, which affects the safety performance of the heating device.

SUMMERY OF THE UTILITY MODEL

The application provides a heating device, battery and consumer, effectively solves the easy insulating problem of losing efficacy of heating device, improves heating device's security performance.

In a first aspect, the present application provides a heating device for heating a battery cell, including: the heat conduction pipe is provided with at least one end which is opened to form a port; a heater wire disposed within the heat conductive tube, both ends of the heater wire protruding from the port; an insulation shield mounted to the port for isolating the heater wire from the port.

According to the technical scheme of the embodiment of the application, the heating wire is arranged in the heat conduction pipe, the heating wire heats the heat conduction pipe, and the heat conduction pipe heats to provide heat for the single battery, so that the function of heating the single battery is achieved; the end part of the heat conduction pipe is provided with the insulation protection part for isolating the heating wire and the port, and the design enables the wire body of the heating wire to be isolated from the port of the heat conduction pipe, so that on one hand, the problem that the port of the heat conduction pipe is damaged due to possible abnormal burrs, sharp edges and the like to cause insulation failure of the heating wire can be avoided; on the other hand, the problem that the port of the heat pipe damages the heating wire due to the shearing force generated on the heating wire by deformation can be avoided, and therefore the insulativity of the heating wire is effectively protected.

In some embodiments, the heat conductive pipe comprises: a tube body which is a flat tube and includes top and bottom walls opposed to each other in a thickness direction thereof and two side walls opposed to each other in a width direction thereof; the plurality of partition walls are arranged in the tube body, each partition wall is respectively connected with the inner surface of the top wall and the inner surface of the bottom wall, and the plurality of partition walls are arranged at intervals along the width direction of the tube body so as to divide the inner cavity of the tube body into a plurality of cavities which are parallel.

According to the technical scheme, the plurality of partition walls are arranged in the tube body of the heat conduction tube, on one hand, the plurality of partition walls have a supporting effect on the tube cavity of the heat conduction tube, the deformation resistance of the heat conduction tube is effectively enhanced, and the heat conduction tube is prevented from forming strong extrusion on the heating wire in the tube cavity due to excessive deformation, so that the insulation protection performance of the heating wire is further improved; on the other hand, a plurality of cavity that parallel are separated into with the lumen of heat pipe to a plurality of partition walls, can play limiting displacement to the position of heater wire in the heat pipe, be convenient for simple, convenient with the even distribution of heater wire in the lumen of heat pipe, improve the equilibrium that the heat pipe heaied up.

In some embodiments, the insulation guard has a plurality of openings in one-to-one correspondence with the plurality of cavities.

In some embodiments, the insulation shield comprises: a body located outside the tube, the body having a first surface facing the port; the bosses are arranged on the first surface in a protruding mode and are inserted into the corresponding cavities respectively, the openings are arranged corresponding to the bosses, and each opening penetrates through the corresponding boss and the body.

Among the above-mentioned technical scheme, set up on the body with a plurality of bosss of a plurality of die cavity one-to-ones, a plurality of die cavities are inserted to a plurality of boss one-to-ones, can form insulating protection to the opening face of every die cavity, simple structure and the installation of being convenient for, the practicality is strong.

In some embodiments, the boss is an interference fit with the cavity. On one hand, the boss is correspondingly inserted into the cavity, so that the whole insulation protection part can be connected to the heat conduction pipe, other connecting structures are not needed, the structure of the whole heating device is effectively simplified, the assembly convenience of the heating device is improved, and the material cost is saved; on the other hand, each boss is in interference fit with each cavity, so that the bosses can play a certain supporting role for the opening ends of the cavities, and the deformation resistance of the ports of the heat conduction pipes is further enhanced.

In some embodiments, the heating wire includes a plurality of main body segments and a plurality of connecting segments, the main body segments are correspondingly disposed in the cavities, each connecting segment is disposed at the port and is used for connecting two adjacent main body segments in the cavities, and two ends of the heating wire are respectively connected to two main body segments in two outermost cavities in the width direction of the tube.

In the technical scheme, the main body section of the heating wire is uniformly laid in the inner cavity of the heat conduction pipe along the width direction of the heat conduction pipe, so that the heating rate of the whole heat conduction pipe is effectively improved; and a plurality of main body sections of the heating wire are limited in the heat conduction pipe through the partition wall, so that the distribution uniformity of the heating wire in the heat conduction pipe is effectively ensured, the temperature rise uniformity of the whole heat conduction pipe is ensured, and the stability of the heating performance of the heating device is improved.

In some embodiments, one end of the heat pipe is open to form the port, the other end of the heat pipe is closed, and each of the body segments extends circuitously in the corresponding cavity.

In the technical scheme, one end of the heat conduction pipe is closed, on one hand, only the end, provided with the port, of the heat conduction pipe is required to be provided with the insulation protection part, and compared with a structure that the two ends of the heat conduction pipe are provided with the insulation protection parts, the material cost of the insulation protection part can be effectively saved; on the other hand, the port is only formed at one end of the heat conduction pipe, and then two ends of the heating wire extend out from the same end of the heat conduction pipe, so that the installation of the heating wire and the arrangement of the connecting piece and the safety protection structure are more convenient compared with the structure of wires outgoing from two ends of the heat conduction pipe, and the structural compactness of the integral heating device is improved.

In a second aspect, the present application provides a battery comprising: a box body; the battery units are arranged in the box body and are arranged in a plurality of rows; in the heating device in the above embodiment, the heating device is disposed between two adjacent rows of the battery cells to heat the battery cells.

In some embodiments, the battery cell is cylindrical, and the heat pipe is corrugated to match the shape of the battery cell. The heat conduction pipe is wavy, and a wave trough of the heat conduction pipe directly forms a limiting groove matched with the shape of the single battery, so that on one hand, the contact area of the heat conduction pipe and the single battery is effectively increased, and the heating efficiency of the heat conduction pipe on the single battery is improved; on the other hand, the wavy heat conduction pipes play a certain copying limiting role on the single batteries, so that the positioning stability of each single battery in the battery is further improved; simultaneously, its surface space is utilized to the maximize to wavy heat pipe to heat a plurality of battery monomer as far as possible in certain space, thereby effectively improve whole battery structure's compactness.

In a third aspect, the present application provides a powered device, comprising the battery in the above embodiments, the battery being configured to provide electrical energy.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic illustration of a vehicle according to some embodiments of the present application;

fig. 2 is an exploded view of a battery provided in accordance with some embodiments of the present application;

fig. 3 is a schematic diagram of the overall structure of a battery provided in some embodiments of the present application;

FIG. 4 is an exploded view of a heating device according to some embodiments of the present application;

FIG. 5 is an exploded view of a heating device according to further embodiments of the present application;

fig. 6 is a sectional view of the heat conductive pipe shown in fig. 5;

fig. 7 is a schematic structural view of an insulation shield according to some embodiments of the present application;

fig. 8 is a schematic view of an insulation guard coupled to a heat pipe according to some embodiments of the present application;

FIG. 9 is a schematic structural view of a heater wire in some embodiments provided by some embodiments of the present application;

FIG. 10 is a schematic structural view of a heater wire according to some embodiments of the present application in still other embodiments;

FIG. 11 is a front view of the end of the heat pipe of FIG. 10 with the insulation shield;

fig. 12 is an exploded view of a heating device according to further embodiments of the present application.

Icon: 1000-a vehicle; 100-a battery; 200-a controller; 300-a motor; 10-a box body; 11-a first part; 12-a second part; 13-a third portion; 20-a battery cell; 30-a heating device; 31-a heat pipe; 311-a tube body; 3111-a top wall; 3112-a bottom wall; 3113-sidewalls; 312-port; 313-a partition wall; 314-a mold cavity; 32-a heating wire; 321-an end portion; 322-a connecting segment; 323-body section; 33-an insulating guard; 331-opening; 332-a body; 333-boss; 334-first surface.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. 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 invention.

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are merely used to more clearly illustrate the technical solutions of the present application, and therefore are only examples, and the protection scope of the present application is not limited thereby.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "including" and "having," and any variations thereof, in the description and claims of this application and the description of the above figures are intended to cover non-exclusive inclusions.

In the description of the embodiments of the present application, the technical terms "first", "second", and the like are used only for distinguishing different objects, and are not to be construed as indicating or implying relative importance or implicitly indicating the number, specific order, or primary-secondary relationship of the technical features indicated. In the description of the embodiments of the present application, "a plurality" means two or more unless specifically defined otherwise.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

In the description of the embodiments of the present application, the term "and/or" is only one kind of association relationship describing an associated object, and means that three relationships may exist, for example, a and/or B, and 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.

In the description of the embodiments of the present application, the term "plurality" refers to two or more (including two), and similarly, "plural sets" refers to two or more (including two), and "plural pieces" refers to two or more (including two).

In the description of the embodiments of the present application, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the directions or positional relationships indicated in the drawings, and are only for convenience of description of the embodiments of the present application and for simplicity of description, but do not indicate or imply that the referred device or element must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the embodiments of the present application.

In the description of the embodiments of the present application, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are used in a broad sense, and for example, may be fixedly connected, detachably connected, or integrated; mechanical connection or electrical connection is also possible; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the embodiments of the present application can be understood by those of ordinary skill in the art according to specific situations.

At present, the application of the power battery is more and more extensive from the development of market situation. The power battery is not only applied to energy storage power supply systems such as hydraulic power, firepower, wind power and solar power stations, but also widely applied to electric vehicles such as electric bicycles, electric motorcycles, electric automobiles and the like, and multiple fields such as military equipment and aerospace and the like, the application environment of the power battery is not lack of special conditions such as high temperature, low temperature and the like, the temperature has important influence on the performance of the battery, the energy of the battery cannot be fully released in the low-temperature environment, and potential safety hazards exist during charging. In order to ensure that the battery can normally work in a low-temperature environment, the battery is generally required to be heated to reach a normal working temperature range.

The applicant has noticed that the conventional heating device of the battery cell using the heating wire as the heating medium is prone to insulation failure during the use process, and the problem seriously affects the service life of the heating device and the use safety performance of the whole battery. The applicant researches and discovers that insulation failure of the heating device is mostly caused by damage to the insulation protection of the heating wire, and insulation failure points of the heating wire are frequently generated at the position of the heating wire corresponding to the port of the heat conduction pipe. On one hand, the heat conducting pipe is generally made of a metal pipe body with good heat conducting performance in order to ensure the heat conducting performance of the heat conducting pipe, burrs, sharp edges and other problems are easily left on a port of the heat conducting pipe after early cutting, two ends of the heating wire pass through the ports, and the burrs left on the port are easy to scratch an insulating protective layer on the surface of the heating wire, so that the heating wire is subjected to insulation failure; and if the heat pipe is seriously deformed along with the accumulation of stress, a port of the heat pipe can form certain shearing force on the heating wire passing through the port, so that an insulation protective layer on the surface of a wire body of the heating wire is damaged to cause the insulation failure of the heating wire.

In order to solve the problem that the port of the heat pipe of the heating device is easy to damage the insulation protection layer of the heating wire, so that the insulation of the heating wire fails, the inventor designs the heating device through research, wherein the port of the heat pipe is provided with an insulation protection part to isolate the heating wire from the port of the heat pipe, so that the port of the heat pipe is prevented from contacting with the wire body of the heating wire.

That is to say, no matter in the heater wire installation or in the heating device use, direct contact heater wire such as burr, the cutting edge of a knife or a sword limit of port has been stopped to the insulating protection layer of avoiding sharp-pointed protrusion that the port of heat pipe exists to fish tail heater wire, plays the guard action to the insulating protectiveness of heater wire, effectively alleviates the easy insulating problem of losing efficacy of whole heating device.

Moreover, even if the heat pipe, particularly the port of the heat pipe deforms, the insulating protection part isolates and supports the port of the heat pipe, and the port of the metal heat pipe is prevented from directly generating shearing force on the heating wire; in addition, even if the insulation protection layer of the heating wire at the port of the heat conduction pipe is damaged, the heating wire cannot be in direct contact with the port of the heat conduction pipe due to the isolation of the insulation protection piece, and the insulation protection property between the heating wire and the port of the heat conduction pipe is still ensured by the insulation protection piece.

The heating device 30 disclosed in the embodiment of the present application may be used for heating the battery cell 20, the battery 100 with the heating device 30 disclosed in the embodiment of the present application may be used in electric equipment such as a vehicle 1000, a ship, an aircraft, or the like, but not limited thereto, and the battery 100 with the heating device 30 disclosed in the embodiment of the present application may be used to form a power supply system of the electric equipment, so that the heating device 30 may heat and raise the temperature of the battery 100 operating in a low temperature environment, so that the battery cell 20 reaches the temperature in the operating region to supply power normally.

The embodiment of the present application provides an electric device using a battery 100 as a power source, and the electric device may be, but is not limited to, a mobile phone, a tablet, a notebook computer, an electric toy, an electric tool, a battery car, an electric automobile, a ship, a spacecraft, and the like. The electric toy may include a stationary or mobile electric toy, such as a game machine, an electric car toy, an electric ship toy, an electric airplane toy, and the like, and the spacecraft may include an airplane, a rocket, a space shuttle, a spacecraft, and the like.

For convenience of description, the following embodiments take an example in which a power consuming apparatus according to an embodiment of the present application is a vehicle 1000.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a vehicle 1000 according to some embodiments of the present disclosure. The vehicle 1000 may be a fuel automobile, a gas automobile, or a new energy automobile, and the new energy automobile may be a pure electric automobile, a hybrid electric automobile, or a range-extended automobile, etc. The battery 100 is provided inside the vehicle 1000, and the battery 100 may be provided at the bottom or the head or the tail of the vehicle 1000. The battery 100 may be used for power supply of the vehicle 1000, for example, the battery 100 may serve as an operation power source of the vehicle 1000. The vehicle 1000 may further include a controller 200 and a motor 300, the controller 200 being configured to control the battery 100 to supply power to the motor 300, for example, for starting, navigation, and operational power requirements while the vehicle 1000 is traveling.

In some embodiments of the present application, the battery 100 may be used not only as an operating power source of the vehicle 1000, but also as a driving power source of the vehicle 1000, instead of or in part of fuel or natural gas, to provide driving power for the vehicle 1000.

Referring to fig. 2 and 3, fig. 2 is an exploded view of a battery 100 according to some embodiments of the present disclosure, and fig. 3 is a schematic view of an overall structure of the battery 100 according to some embodiments of the present disclosure. The battery 100 includes a case 10, a battery cell 20, and a heating device 30, and the battery cell 20 is accommodated in the case 10. The case 10 is used to provide a receiving space for the battery cells 20, and the case 10 may have various structures. In some embodiments, the case 10 may include a first portion 11, a second portion 12, and a third portion 13 connecting the first portion 11 and the second portion 12, the first portion 11 and the second portion 12 being disposed opposite to each other, and the first portion 11, the second portion 12, and the third portion 13 together defining a receiving space for receiving the battery cell 20. The first and

second portions

11, 12 may be oppositely disposed plate-like structures, and the third portion 13 connects the first and

second portions

11, 12. Of course, the case 10 formed by the first, second and

third portions

11, 12 and 13 may have various shapes, such as a cylinder, a rectangular parallelepiped, and the like.

In the battery 100, the number of the battery cells 20 may be multiple, and the multiple battery cells 20 may be connected in series or in parallel or in series-parallel, where in series-parallel refers to both series connection and parallel connection among the multiple battery cells 20. The plurality of battery cells 20 can be directly connected in series or in parallel or in series-parallel, and the whole formed by the plurality of battery cells 20 is accommodated in the box body 10; of course, the battery 100 may also be formed by connecting a plurality of battery cells 20 in series, in parallel, or in series-parallel to form a battery module, and then connecting a plurality of battery modules in series, in parallel, or in series-parallel to form a whole, and accommodating the whole in the case 10. The battery 100 may further include other structures, for example, the battery 100 may further include a bus member for achieving electrical connection between the plurality of battery cells 20.

Each battery cell 20 may be a secondary battery or a primary battery; but is not limited to, a lithium sulfur battery, a sodium ion battery, or a magnesium ion battery. The battery cell 20 may be cylindrical, flat, rectangular parallelepiped, or other shape.

The heating device 30 is disposed between two adjacent rows of the battery cells 20 to heat the plurality of battery cells 20, so as to ensure that the battery cells 20 can normally supply power in a low-temperature environment.

Referring to fig. 4, according to some embodiments of the present application, fig. 4 is an exploded view of a heating device 30 according to some embodiments of the present application. The present application provides a heating device 30 for heating a battery cell 20, including: a heat transfer pipe 31, at least one end of the heat transfer pipe 31 being open to form a port 312; a heater wire 32 provided in the heat pipe 31, both ends 321 of the heater wire 32 protruding from the port 312; and an insulation shield 33 disposed at the port 312 for isolating the heater wire 32 from the port 312.

The heat conducting pipe 31 is a pipe for transferring heat to the battery cell 20, the heat conducting pipe 31 has two ends, at least one end of the heat conducting pipe 31 is open to form a port 312, so that the heating wire 32 can be conveniently arranged in the heat conducting pipe 31 through the port 312, and the two ends 321 of the heating wire 32 can conveniently extend out of the port 312 of the heat conducting pipe 31 to be connected with a power supply for supplying electric energy to the heating wire 32.

The shape of the heat conductive pipe 31 may be determined according to the shape and size of the battery cells 20 and the arrangement order of the plurality of battery cells 20. The heat pipe 31 can be made of a metal material (such as aluminum alloy) with a certain strength and a high heat conductivity, so that the heat pipe 31 has a good heat conductivity and reduces heat loss, and in addition, the metal heat pipe 31 has a certain strength and a high deformation resistance and is clamped between the plurality of battery cells 20 and not easy to deform.

The heating wire 32 may be a bendable wire body with a certain flexibility and capable of converting electric energy into heat energy, and it can be understood that the heating wire 32 should include a resistance wire and a wire body insulating layer wrapped on the outer circumferential surface of the resistance wire, and the wire body insulating layer may be an insulating tube made of an insulating material (such as rubber) or an insulating coating applied on the outer circumferential surface of the resistance wire. The heater wire 32 is provided in the heat transfer pipe 31, both ends 321 of the heater wire 32 are used to connect a power supply for supplying power to the heater wire, and the heater wire 32 generates heat after being supplied with power to heat the heat transfer pipe 31, thereby heating the heat transfer pipe 31.

The insulation protection member 33 is disposed at the port 312 of the heat pipe 31 to isolate the port 312 of the heat pipe 31 from the heater wire 32, the insulation protection member 33 should be made of an insulation material, the insulation protection member 33 can be a separate component made of plastic, acrylic, etc. mounted at the port 312 of the heat pipe 31, the insulation protection member 33 is connected to the port 312 of the heat pipe 31, and the heater wire 32 is isolated from the port 312 of the heat pipe 31.

Of course, the insulation protector 33 may be an insulation film covering the port 312 of the heat pipe 31, or may be an insulation paste poured into the port 312 of the heat pipe 31, and the insulation paste may be an epoxy resin paste, an epoxy polyester paste, or the like.

The heating wire 32 is arranged in the cavity of the heat pipe 31 to heat the battery cell 20, the structure is simple and easy to assemble, the material cost, the heating rate is high, and the practicability is strong, the insulating protection piece 33 is arranged at the end 321 of the heat pipe 31 to isolate the heating wire 32 from the port 312 of the heat pipe 31, the design avoids the contact between the wire body of the heating wire 32 and the port 312 of the heat pipe 31, on one hand, the problem that the wire body of the heating wire 32 is scratched due to possible abnormalities such as burrs, sharp edges and the like at the port 312 of the heat pipe 31 to cause insulation failure of the heating wire can be avoided, on the other hand, the battery cell 20 gives a certain pressure to the heat pipe 31, the heat pipe 31 has a larger deformation hidden danger along with the prolonging of the service time, and certain shearing force can be generated on the heating wire 32 after the port 312 of the heat pipe 31 deforms, the insulating protection piece 33 is arranged at the port 312 of the heat pipe 31 to isolate the port 312 from the heating wire 32, the heat pipe 31 is prevented from being directly damaged to the heating wire 32 due to deformation, so that the insulation between the heat pipe 31 and the heating wire 32 is effectively protected.

Alternatively, referring to fig. 5 and fig. 6, fig. 5 is a schematic structural diagram of a heating device 30 according to still other embodiments of the present application, and fig. 6 is a cross-sectional view of a heat pipe 31 shown in fig. 5 of the present application, where the heat pipe 31 includes: a tube body 311, the tube body 311 may be a flat tube, and includes a top wall 3111 and a bottom wall 3112 opposite to each other in a thickness direction thereof and two side walls 3113 opposite to each other in a width direction thereof; and a plurality of partition walls 313 disposed in the tube body 311, each partition wall 313 being connected to an inner surface of the top wall 3111 and an inner surface of the bottom wall 3112, respectively, the plurality of partition walls 313 being disposed at intervals in a width direction of the tube body 311 to partition an inner cavity of the tube body 311 into a plurality of cavities 314 arranged in parallel.

The "top and bottom walls 3112 of the tube body 311" generally refer to two side walls of the battery cell 20 corresponding to both sides of the heat conductive pipe 31. When the body 311 sets up between a plurality of battery monomer 20 of battery 100, a plurality of battery monomer 20 often can produce certain pressure to roof 3111 and/or diapire 3112 of body 311, in this application, set up a plurality of partition walls 313 in the body 311 to separate into a plurality of parallel die cavities 314 with the inner chamber of body 311, partition wall 313 can produce the supporting role to the inner chamber of flat pipe, increases the intensity of flat pipe.

Wherein, the partition wall 313 can be the plane structure also can be the curved surface structure, and the partition wall 313 can be parallel with the thickness direction of flat pipe also can become certain contained angle with the thickness direction of flat pipe, and the partition wall 313 can also be fixed in the inner chamber of body 311 through modes such as welding with body 311 integrated into one piece.

Alternatively, the heat conducting pipe 31 may be a pipe body 311 similar to a harmonica pipe, and as shown in fig. 6, the cross section of the pipe body 311 may be rectangular, and the partition wall 313 is parallel to the thickness direction of the pipe body 311 to divide the inner cavity of the pipe body 311 into a plurality of cavities 314 which are parallel and have rectangular cross sections.

The plurality of partition walls 313 are arranged in the tube body 311 of the heat conduction tube 31, so that the deformation resistance of the heat conduction tube 31 can be effectively enhanced, the heat conduction tube 31 is prevented from forming strong extrusion on the heating wire 32 in the tube cavity due to excessive deformation, and the insulation protection performance of the heating wire 32 is further improved; meanwhile, the partition wall 313 limits the position of the heating wire 32 in the heat pipe 31, so that the heating wire 32 can be uniformly limited in each cavity 314, and the temperature rise balance of the heat pipe 31 can be improved.

In some embodiments, with continued reference to fig. 5, the insulation guard 33 has a plurality of openings 331, and the plurality of openings 331 correspond to the plurality of cavities 314 one by one.

The plurality of partition walls 313 divide the inner cavity of the tube body 311 into a plurality of cavities 314, and the insulation guard 33 has a plurality of openings 331 corresponding to the cavities 314 one by one, i.e., the plurality of openings 331 communicate with the plurality of cavities 314 one by one.

The insulation shield has a plurality of openings 331 in communication with the cavity 314, and effectively isolates the end of each partition wall 313 facing the port 312 of the tubular body 311 from the heater wire 32 to provide an overall insulation shield for the port 312 of the thermally conductive tube 31.

In some embodiments, with continuing reference to fig. 5 and with further reference to fig. 7 and 8, fig. 7 is a schematic structural diagram of an insulation protection member 33 according to some embodiments of the present disclosure, and fig. 8 is a schematic structural diagram of the insulation protection member 33 according to some embodiments of the present disclosure connected to the heat conducting pipe 31, where the insulation protection member 33 may include: a body 332, the body 332 being located outside the tube 311, the body 332 having a first surface 334 facing the port 312; and a plurality of bosses 333 protrudingly provided on the first surface 334 and respectively inserted into the corresponding cavities 314, wherein openings 331 are provided corresponding to the bosses 333, and each opening 331 penetrates the corresponding boss 333 and the body 332.

The body 332 is provided with a plurality of bosses 333 which can be inserted into a plurality of cavities 314 one by one, each opening 331 penetrates through the bosses 333 and the body 332 to be communicated with the corresponding cavity 314, when the heating wire 32 enters and exits each cavity 314, the wire body of the heating wire 32 enters the cavity 314 through the opening 331 of the insulation protection member 33 without contacting with the tube body 311 and the end 321 of the partition wall 313, and the body 332 and the bosses 333 work together to isolate the heating wire 32 from the port 312 of the heat conduction tube 31.

The body 332 and the boss 333 may be made of plastic, silica gel, acrylic, or the like. The first surface 334 of the body 332 faces the port 312, and the first surface 334 may abut against the port 312 or may have a gap with the port 312. Insulation shield 33 may be secured to port 312 by an insulating glue or other insulating connection, such as an insulating glue disposed between first surface 334 and port 312 or between an outer surface of boss 333 and an inner surface of cavity 314, to secure insulation shield 33 to port 312 of the catheter. The cross-sectional shape of the boss 333 may be a shape that matches the cross-section of the cavity 314, and may also be circular or other shapes.

The structure of the insulation shield enables the wire body of the heating wire 32 to enter the cavity 314 through the opening 331 on the boss 333 when the heating wire 32 enters and exits each cavity 314, and the wire body does not contact the pipe body 311 and the end 321 of the partition wall 313, so that the whole structure is simple, the installation is convenient, and the port 312 of the heat conducting pipe 31 provided with the partition walls 313 is insulated and isolated completely.

Optionally, in some embodiments, the boss 333 is an interference fit with the cavity 314.

Boss 333 and cavity 314 are connected in an interference fit manner, so that after boss 333 is inserted into cavity 314, insulation guard 33 can be fastened on heat conducting pipe 31.

On one hand, the interference fit mode enables the connection between the insulation protection part 33 and the heat conduction pipe 31 to be free from installing other insulation connecting parts, so that the structure of the integral heating device 30 is effectively simplified, the assembly convenience of the heating device 30 is improved, and the material cost is saved; on the other hand, each boss 333 is in interference fit with each cavity 314, so that the boss 333 plays a certain supporting role for the opening 331 end of the cavity 314, and further enhances the deformation resistance of the port 312 of the heat conductive pipe 31.

Referring to fig. 5 again and with further reference to fig. 9 according to some embodiments of the present application, fig. 9 is a schematic structural view of the heating wire 32 provided in some embodiments of the present application, a middle portion of the heating wire 32 includes a plurality of body segments 323 and a plurality of connecting segments 322, the plurality of body segments 323 are correspondingly disposed in the plurality of cavities 314, each connecting segment 322 is disposed at the port 312 and is used for connecting the body segments 323 in two adjacent cavities 314, and two end portions 321 of the heating wire 32 are respectively connected to the two body segments 323 in the two cavities 314 outermost in the width direction of the tube body 311.

The plurality of main line segments of the heating wire 32 are correspondingly arranged in the plurality of cavities 314, each main line segment can directly extend to two ends of the heat conducting pipe 31 in the corresponding cavity 314 along the length direction of the heat conducting pipe 31, or can be arranged in the cavity 314 in a winding manner, and the main line segments arranged in the cavity 314 in the winding manner can enable the plurality of strands of the heating wire 32 to be included in each cavity 314, so that the efficiency of the whole heat conducting pipe 31 is effectively increased.

The connecting section 322 is disposed at the port 312 to connect the body sections 323 in the two adjacent cavities 314, the insulating shield 33 is disposed at the port 312, and then two ends of the connecting section 322 pass through the two adjacent openings 331 to connect with the body sections 323 in the two adjacent cavities 314, and the insulating shield 33 separates the port 312 of the heat conductive pipe 31 and the connecting section 322 of the heating wire 32.

Both ends 321 of the heater wire 32 are connected to the two body segments 323 in the two cavities 314 outermost in the width direction of the pipe body 311, and both ends 321 of the heater wire 32 may protrude through the same port 312 of the heat pipe 31 or may protrude from both ends of the heat pipe 31.

Due to the design, the whole heating wire 32 can be distributed in the plurality of cavities 314 of the heat conducting pipe 31 along the width direction of the heat conducting pipe 31, so that the heating rate of the whole heat conducting pipe 31 is effectively increased; and the plurality of body sections 323 of the heating wire 32 are limited in the heat pipe 31 by the partition wall 313, so that the distribution uniformity of the heating wire 32 in the heat pipe 31 is effectively ensured, the temperature rise uniformity of the whole heat pipe 31 is improved, and the stability of the heating performance of the heating device 30 is improved.

Alternatively, with continued reference to fig. 9, both ends of the heat conducting pipe 31 are opened to form ports 312, both ports 312 are provided with insulation shields 33, and the body section 323 in each cavity 314 extends directly along the length direction of the cavity 314 to the ports 312 at both ends of the heat conducting pipe 31, and then is connected end to end in sequence through the connecting sections 322.

When the heating wire 32 is arranged on the heat conductive pipe 31, one end of the heating wire 32 may be guided to penetrate into one cavity 314 outermost in the width direction of the pipe body 311, and then each cavity 314 may be sequentially and reciprocally penetrated until penetrating out from the other cavity 314 outermost in the width direction of the pipe body 311. Each cavity 314 contains a bundle of wire bodies of heater wires 32.

Alternatively, referring to fig. 10 and 11, fig. 10 is a schematic structural view of a heating wire 32 provided in some embodiments of the present application in still other embodiments, and fig. 11 is a front view of an end of the heat conducting pipe 31 shown in fig. 10, where the end is provided with an insulating protection member 33; one end of the heat conductive pipe 31 is open to form the port 312, the other end of the heat conductive pipe 31 is closed, and each body segment 323 extends circuitously in the corresponding cavity 314.

The heat pipe 31 is open at one end to form a closed end of the port 312, i.e. the heating wire 32 does not penetrate through the closed end of the heat pipe 31, and the insulating protection member 33 is only required to be disposed at one end of the heat pipe 31 for the purpose of this application.

Wherein each main line segment may be looped one or more times within a corresponding cavity 314, optionally, as shown in figure 10, wherein each main line segment is looped once within a cavity 314 such that two bundles of heater wire 32 are contained within each cavity 314.

One end of the heat pipe 31 is closed, on one hand, only the end of the heat pipe 31 where the port 312 is disposed needs to be provided with the insulation protection member 33, and compared with the structure in which the insulation protection members 33 are disposed at both ends of the heat pipe 31, the material cost of the insulation protection member 33 can be effectively saved; on the other hand, at least two heating wire 32 bodies are contained in each cavity 314, so that the heating efficiency is effectively improved; meanwhile, the two ends 321 of the heating wire 32 extend out from the same end of the heat pipe 31, which is more convenient for the arrangement of the power supply and other connecting components of the heating wire 32 and improves the structural compactness of the whole heating device 30 compared with the structure of the two ends of the heat pipe 31.

According to some embodiments of the present application, there is also provided a battery 100 including the heating device 30 of the above embodiments, further including: a case 10; a plurality of battery cells 20 arranged in a plurality of rows in the case 10; the heating device 30 is disposed between two adjacent rows of the battery cells 20 to heat the battery cells 20.

The case 10 may be any one of the cases 10, and the battery cell 20 may be any one of the battery cells 20. The shape of the outer surface of the heat pipe 31 of the heating device 30 may be changed according to the shape of the battery cell 20, for example, if the battery cell 20 is a rectangular parallelepiped, the heat pipe 31 may be a straight pipe whose outer surface has a plane parallel to the outer surface of the battery cell 20, and the outer surface of the heat pipe 31 contacts the outer surface of the battery cell 20, so as to effectively increase the contact area, and of course, the outer surface of the heat pipe 31 may not be completely matched and attached to the outer surface of the battery cell 20, as long as heat can be provided for the battery cells 20 on two adjacent sides of the heat pipe 31.

In some embodiments, referring again to fig. 3 and with further reference to fig. 12, fig. 12 is an exploded view of a heating device 30 according to other embodiments of the present disclosure, in which the battery cells 20 are cylindrical and the heat pipes 31 are wavy to match the shape of the battery cells 20.

The surface of the heat conducting pipe 31 is wavy, that is, the surface of the heat conducting pipe 31 adjacent to the battery cell 20 has a plurality of arc-shaped grooves matching with the shape of the cylindrical battery cell 20, and the plurality of battery cells 20 on both sides of the heat conducting pipe 31 can be mutually dislocated and limited in the limiting grooves of the heat conducting pipe 31, it can be understood that the axis of the arc-shaped groove is parallel to the axis of the cylindrical battery cell 20.

The position of the heat conduction pipe 31 corresponding to the battery cell 20 may be near one end of the cylindrical battery cell 20 or corresponding to the middle position of the cylindrical battery cell 20.

Optionally, the heat conduction pipe 31 corresponds to a middle position of the cylindrical battery cell 20, and as a preferred embodiment, the width of the heat conduction pipe 31 extending along the axial direction of the cylindrical battery cell is greater than one half of the length of the cylindrical battery cell 20, so as to ensure that a sufficient heating area is provided for the battery cell 20, and the heating efficiency of the battery 100 is effectively ensured.

Of course, it can be understood that if the width of a single heat conduction pipe 31 is not enough to provide a sufficient heating area for the battery cells 20, a plurality of heat conduction pipes 31 may be arranged side by side between two adjacent rows of battery cells 20, and adjacent two heat conduction pipes 31 may abut against each other or have a certain gap.

On one hand, the wavy heat conduction pipe 31 effectively increases the contact area between the heat conduction pipe 31 and the battery cell 20, so that the heating efficiency of the heat conduction pipe 31 on the battery cell 20 is improved; on the other hand, the wavy heat conduction pipes 31 play a certain copying limiting role on the battery cells 20, so that the positioning stability of each battery cell 20 in the battery 100 is further improved; meanwhile, the corrugated heat pipe 31 maximizes the utilization of the surface space thereof to heat the plurality of battery cells 20 as much as possible in a certain space, thereby effectively improving the compactness of the overall battery 100 structure.

Alternatively, the battery cell 20 may be adhered to the heat conducting pipe 31 by an insulating adhesive, so as to fix the position of the heat conducting pipe 31 on the battery cell 20 and simultaneously perform an insulating protection function between the battery cell 20 and the heat conducting pipe 31.

In a third aspect, the present application provides an electric device, comprising the battery 100 in the above embodiments, wherein the battery 100 is used for providing electric energy.

The powered device may be any of the aforementioned devices that employ battery 100.

According to some embodiments of the present application, referring to fig. 4 to 12, the present application provides a heating device 30, which includes a heat conducting pipe 31, a heating wire 32 and an insulation protection member 33, wherein one end of the heat conducting pipe 31 is closed, and the other end is opened to form a port 312, the heat conducting pipe 31 includes a pipe body 311 and five partition walls 313, the pipe body 311 is a corrugated flat pipe, the five partition walls 313 are arranged in the pipe body 311 at intervals along the width direction of the pipe body 311 to divide the inner cavity of the pipe body 311 into six parallel cavities 314. The insulation protection member 33 comprises a body 332 and six bosses 333 which are protrudingly arranged on the body 332, each boss 333 is correspondingly inserted into one cavity 314, and the bosses 333 are provided with openings 331 communicated with the cavities 314; the heating wire 32 includes six body segments 323 and five connecting segments 322 in the middle thereof, the six body segments 323 detour in the corresponding cavities 314, the five connecting segments 322 are disposed at the ports 312 and are used to connect the body segments 323 in the two adjacent cavities 314, and both ends of the heating wire 32 protrude through the two outermost cavities 314 of the tube body 311.

In implementation, a flat harmonica tube can be used as the heat conducting pipe 31, the insulation shield is inserted into the harmonica tube, each boss 333 of the insulation shield 33 corresponds to one cavity 314 of the harmonica tube, then the main body section 323 of the heating wire 32 can be sequentially pulled into each cavity 314 of the harmonica tube through barbs or other similar tools, so that two heating wire 32 bodies are included in each cavity 314, and after the heating wires 32 are arranged, the heat conducting pipe 31 is bent to form a wave shape on the heat conducting pipe 31.

It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A heating device for heating a battery cell, comprising:

the heat conduction pipe is provided with at least one end which is opened to form a port;

a heater wire disposed within the heat conductive tube, both ends of the heater wire protruding from the port;

an insulation shield mounted to the port for isolating the heater wire from the port.

2. The heating device according to claim 1, wherein the heat conductive pipe comprises:

a tube body which is a flat tube and includes top and bottom walls opposed to each other in a thickness direction thereof and two side walls opposed to each other in a width direction thereof;

the plurality of partition walls are arranged in the tube body, each partition wall is respectively connected with the inner surface of the top wall and the inner surface of the bottom wall, and the plurality of partition walls are arranged at intervals along the width direction of the tube body so as to divide the inner cavity of the tube body into a plurality of cavities which are parallel.

3. The heating apparatus of claim 2, wherein the insulation shield has a plurality of openings, and wherein the plurality of openings correspond one-to-one with the plurality of cavities.

4. The heating device of claim 3, wherein the insulation shield comprises:

a body located outside the tube, the body having a first surface facing the port;

the bosses are arranged on the first surface in a protruding mode and are inserted into the corresponding cavities respectively, the openings are arranged corresponding to the bosses, and each opening penetrates through the corresponding boss and the body.

5. The heating device of claim 4, wherein the boss is an interference fit with the cavity.

6. The heating apparatus as claimed in any one of claims 2 to 5, wherein the heating wire includes a plurality of main body segments and a plurality of connecting segments, the main body segments are correspondingly disposed in the cavities, each connecting segment is disposed at the port and is used for connecting the main body segments in two adjacent cavities, and two ends of the heating wire are respectively connected to the two main body segments in the two outermost cavities in the width direction of the tube.

7. The heating device of claim 6, wherein one end of said heat pipe is open to form said port, the other end of said heat pipe is closed, and each of said body segments extends circuitously within a corresponding one of said cavities.

8. A battery, comprising:

a box body;

the battery units are arranged in the box body and are arranged in a plurality of rows;

the heating device according to any one of claims 1 to 7, wherein the heating device is arranged between two adjacent rows of the battery cells to heat the battery cells.

9. The battery of claim 8, wherein the battery cell is cylindrical and the heat pipe is corrugated to match the shape of the battery cell.

10. An electrical consumer, comprising a battery according to claim 8 or 9, for providing electrical energy.