CN216354437U

CN216354437U - Heating device, battery and electric device

Info

Publication number: CN216354437U
Application number: CN202122622276.1U
Authority: CN
Inventors: 李兴星; 陈智明; 黄小腾
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: WO2023071056A1

Abstract

The application relates to a heating device, a battery and an electric device. Heating device includes heat-conducting member and heating member, and the heat-conducting member is used for installing in the box of battery, and the heat-conducting member has the chamber that holds that is used for holding heat-conducting medium, and the lateral wall that holds the chamber is flexible material, and at least part of heating member stretches into and holds the intracavity to can contact with heat-conducting medium. When the heating element stretches into the accommodating cavity and is in contact with the heat-conducting medium, the heat generated by the heating element can be transferred to the accommodating cavity through the heat-conducting medium and transferred to the outside through the heat-conducting element. Because the lateral wall that holds the chamber is flexible material, when the inside battery monomer ageing deformation swell of battery, the heat-conducting piece that has the flexibility and hold the chamber also along with battery monomer deformation and deformation, heat-conducting piece and battery monomer keep good effectual heat transfer area for the heating-carrying member passes through the heat-conducting piece and transmits the heat to battery monomer, guarantees that battery monomer's temperature and chemical activity are in normal working range, satisfies the user to the power consumption demand of battery.

Description

Heating device, battery and electric device

Technical Field

The application relates to the technical field of batteries, in particular to a heating device, a battery and an electric device.

Background

The battery is the main energy storage device of electric automobile, and in the cold environment of weather, the chemical activity of battery is lower, and the vehicle uses the battery to reduce as the performance of power source's system or equipment, and the ambient temperature that needs to guarantee the battery can be in normal use range, makes the chemical activity of battery be in normal condition, is favorable to promoting battery life and vehicle performance. Among the prior art, set up heating device in the battery outside, utilize heating device to transmit the heat to the battery, keep the required operating temperature of battery and chemical activity, when the laminating performance of heating device and battery was relatively poor, lead to heating device to the heating effect of battery relatively poor, can't heat the battery to normal temperature within range.

SUMMERY OF THE UTILITY MODEL

The application provides a heating device, battery and electric installation, and the heat-conducting part of heating device and battery contact adopts the flexibility design, and when the ageing deformation of battery, the heat-conducting part can be along with battery deformation and deformation, keeps the heat transfer interface effective.

The first aspect of the present application provides a heating device, and heating device includes heat-conducting member and heating member, and heat-conducting member is used for installing in the box of battery, and heat-conducting member has the chamber that holds that is used for holding heat-conducting medium, and the lateral wall that holds the chamber is flexible material, and at least part of heating member stretches into and holds the intracavity to can contact with heat-conducting medium. When the heating element at least partially extends into the accommodating cavity and is in contact with the heat-conducting medium, the heat generated by the heating element can be transferred to the accommodating cavity through the heat-conducting medium and transferred to the outside through the heat-conducting element. Because the lateral wall that holds the chamber is flexible material, when the ageing deformation swell of battery monomer inside the battery, the heat-conducting piece that has the flexibility and hold the chamber also deforms along with battery monomer deformation, heat-conducting piece and battery monomer keep good effectual heat transfer area for the heating-carrying member passes through the heat-conducting piece and transmits the heat to battery monomer, guarantee that battery monomer's temperature is in normal operating temperature, battery monomer's chemical activity is in normal operating condition, thereby satisfy the user demand for the power consumption of battery.

In one possible embodiment, the receiving chamber comprises a first interior chamber and a second interior chamber which are connected to each other, the first interior chamber being located below the second interior chamber, and at least part of the heating element extending into the first interior chamber. Because the produced heat of heating member can make the density of the heat-conducting medium of near region reduce and flow upwards, when the at least part of heating member stretched into the first inner chamber that is located the below of second inner chamber, the heat can be conducted to the top of second inner chamber from bottom to top, after heat-conducting medium had passed heat to battery monomer, the heat-conducting medium that the temperature of heat-conducting medium reduced and density increase, heat-conducting medium can flow downwards and be close to the heating member, acquire the energy again, thereby form good heat transfer circulation, make and hold the chamber and all have sufficient heat from bottom to top, to battery monomer transmission, guarantee that battery monomer's temperature is in normal range, guarantee that battery monomer's chemical activity is in normal operating condition, satisfy the user to the power consumption demand of battery.

In one possible design, the first interior chamber is a linear structure and the heating element extends through the first interior chamber. The first inner cavity is of a linear structure, correspondingly, the heating element is of a linear structure, and the heating element heats the heat-conducting medium in the vicinity of the first inner cavity.

In one possible design, the second inner cavity comprises a plurality of sub-cavities arranged at intervals, and each sub-cavity is communicated with the first inner cavity. Because the second inner chamber includes that a plurality of intervals set up and the minute chamber that link up with first inner chamber for the heat of first inner chamber can be through dividing the chamber and transmitting uniformly, makes heat-conducting piece can be to battery monomer transmission heat uniformly, makes battery monomer can improve the temperature uniformly, guarantees that the inside chemical activity of battery monomer can be in normal operating condition uniformly, thereby satisfies the user to the power consumption demand of battery. When each minute chamber sets up along heating device length direction interval, each minute chamber can directly link up with first inner chamber promptly, then promotes the circulation of heat-conducting medium at first inner chamber and minute chamber between, further promotes the efficiency to battery monomer heat transfer.

In a possible design, the second inner cavity is of a broken line type structure or an S-shaped structure, and the area of the heat conducting piece is fully utilized, so that the heat transfer area and the heat transfer efficiency of the second inner cavity to the single battery are increased, the temperature and the chemical activity of the single battery are improved, and the power consumption requirement of a user on the battery is met.

In one possible design, the heat conducting member includes an installation portion and a heat conducting portion, the heat conducting portion is provided with an accommodation cavity, and the heat conducting portion is made of a flexible material. The heat conduction part is connected with other structures such as the battery monomer of battery through the installation department for the heat conduction part can contact with the battery monomer steadily, because the heat conduction part is flexible material, but has deformability, consequently under the condition of the ageing deformation of battery monomer, the heat conduction part also can be along with the deformation of battery monomer, keep effectual heat transfer area, make the free temperature of battery can be in normal operating range, make the free chemical activity of battery be in normal operating condition, satisfy the power consumption needs of user to the battery.

In one possible design, the mounting portion is made of a rigid material and is provided with a first connecting hole for mounting the heat-conducting member in the box body. Because the installation department is the rigidity material for heat-conducting piece can prevent heat-conducting piece and battery monomer inter motion through the stable being connected of first connecting hole and box, reduces the risk of heat-conducting portion wearing and tearing, improves heat-conducting piece's life.

In one possible design, the heat conducting member and/or the heat conducting medium is/are insulators, which can reduce the risk of the heating member leaking electricity to break down the heating device and the battery cell.

In one possible design, the heating member includes a heating portion and electrical connection ends, the heating portion is located in the accommodating cavity, and the electrical connection ends are located at two ends of the heat-conducting member. Divide into the heating member and be used for transmitting current's electric connection end and the heating portion that produces heat for heating portion can obtain outside electric energy from the heat-conducting member, and make heating portion only utilize the electric energy to produce heat holding the intracavity, both prevented the electric leakage accident, make the heat again can hold the intracavity and transmit to battery monomer through heat-conducting medium fast, reduce heat loss.

In one possible design, the heating device further includes a temperature sensor disposed on an outer surface of the heat-conducting member. Through measuring the temperature of heat-conducting medium, can adjust the heating power of heating member according to the temperature that records, prevent that the heat-conducting medium is overheated to make and hold the intracavity internal pressure and surpass the intensity limit who holds the chamber, reduce the risk that the heat-conducting medium revealed from holding the chamber, improve heating device's life.

In a second aspect of the present application, a battery is provided, where the battery includes a battery cell and a heating device, and the heating device is the heating device in the above description, and the effect is as described above.

In a possible design, the battery further comprises a box body, the single batteries are located in the box body, the battery further comprises a mounting plate located in the box body, the mounting plate is located on the outer side of each single battery, a heating device is arranged between every two adjacent single batteries and connected with the shells of the single batteries, and/or a heating device is arranged between the mounting plate and the single battery located on the outermost side and connected with the mounting plate and the shells of the single batteries located on the outermost side. Through this installation setting, when the ageing deformation of battery monomer, the heating device who has the flexibility also can be along with battery monomer deformation and deformation, and heating device and battery monomer keep effectual heat transfer area, make the free temperature of battery be in normal working range to promote the free chemical activity of battery and be in normal condition, satisfy user's power consumption needs.

The third aspect of the present application provides an electric device, which includes the battery in the above-mentioned content, and the effects are as described above.

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

Drawings

FIG. 1 is a schematic structural view of an electric heating plate in the prior art;

FIG. 2 is a schematic structural diagram of a powered device provided herein in some embodiments;

fig. 3 is a schematic structural view of a battery provided herein in some embodiments;

FIG. 4 is a schematic view of the battery of FIG. 3 with a first portion of the case removed;

FIG. 5 is a schematic layout view of the heating apparatus and the mounting plate of FIG. 4;

FIG. 6 is a partial enlarged view of portion A of FIG. 4;

FIG. 7 is a schematic structural view of a heating device provided herein in one embodiment;

FIG. 8 is a schematic view of the structure of FIG. 7 from another perspective;

FIG. 9 is a side view of FIG. 8;

fig. 10 is a sectional view taken in the direction B of fig. 8;

fig. 11 is a partially enlarged view of a portion C in fig. 10.

Reference numerals:

1000-a vehicle;

100-electric heating pieces;

101-a heating element;

102-a cable;

200-a battery;

21-battery cell;

22-a housing;

221-a second connection hole;

23-a box body;

231 — first part;

232-a second portion;

24-a mounting plate;

241-a third connection hole;

300-a controller;

400-a motor;

1-a heating device;

11-a thermally conductive member;

111-a mounting portion;

1111-a first connection hole;

112-a heat conducting portion;

113-a containment chamber;

1131 — a first lumen;

1132 — a second lumen;

12-a heating element;

121-a heating part;

122-electrical connection terminals;

13-heat conducting medium.

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

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are 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.

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 in the description of the application in the present application 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. The terms "first," "second," and the like in the description and claims of this application or in the above-described drawings are used for distinguishing between different elements and not for describing a particular sequential or chronological order.

Reference in the specification 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 specification. 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 present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "attached" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

The term "and/or" in this application is only one kind of association relationship describing the associated object, and means that there may be three kinds of relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" in this application generally indicates that the former and latter related objects are in an "or" relationship.

The "plurality" in the present application means two or more (including two), and similarly, "plural" means two or more (including two) and "plural" means two or more (including two).

From the development of market situation, the application of the power battery as a main energy storage device is more and more extensive, and the power battery is not only applied to energy storage power supply systems of hydraulic power, firepower, wind power, solar power stations and the like, but also widely applied to electric vehicles such as electric bicycles, electric motorcycles, electric automobiles and the like, and a plurality of fields such as military equipment, aerospace and the like, and along with the continuous expansion of the application field of the power battery, the performance requirement of the power battery is also continuously improved.

The inventor notices that in cold weather, the battery temperature is not in the normal working range, the chemical activity of the battery is low, the discharge performance and the service life of the battery are limited, the performance of a system or equipment which runs by the battery in a vehicle is greatly reduced, and the use requirement of a user is difficult to meet. In order to solve the problem of low chemical activity of the battery in a cold environment, the applicant has studied and found that an electric heating sheet 100 as shown in fig. 1 may be provided inside the battery, and a heating element 101 may be attached to the battery by using a glue. The electric heating sheet 100 is composed of a heating body 101 and a cable 102, wherein at least part of the cable 102 extends into the heating body 101, and after the cable 102 transmits current to the heating body 101, the heating body 101 generates heat and transmits the heat to the battery, so that the battery keeps normal working temperature, the chemical activity of the battery is improved, and the use performance required by a user on a vehicle is met. However, as the battery ages, deformation problems such as swelling or sinking can occur, the heating element 101 is limited by the structural strength of the heating element, cannot follow the deformation of the battery, and is degummed, so that the heat transfer interface fails, the normal working temperature of the battery is difficult to maintain in a cold environment, the chemical activity of the battery is low, the discharge performance of the battery is limited, and the vehicle performance is limited.

Based on the consideration, in order to solve the problem of failure of the heat transfer interface, the inventor conducts deep research, and designs a heating device which adopts a flexible design, specifically, the contact part of the heating device and the battery is made of flexible materials, namely, the heat transfer part of the heating device is made of flexible materials.

The heating device disclosed in the embodiment of the application can be used in electric devices such as vehicles, ships or aircrafts, but not limited to. The power supply system or the equipment which are provided with the heating device, the battery and the like disclosed by the application and form the electric device can be used, so that the chemical activity of the energy storage devices such as the battery is favorably improved, and the working performance and the service life of the energy storage devices such as the battery are improved.

The application provides an electric device using a battery as a power supply, which can 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 will be described by taking an electric device as an example of the vehicle 1000.

Referring to fig. 2, fig. 2 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 200 is provided inside the vehicle 1000, and the battery 200 may be provided at the bottom or the head or the tail of the vehicle 1000. The battery 200 may be used for power supply of the vehicle 1000, for example, the battery 200 may serve as an operation power source of the vehicle 1000. The vehicle 1000 may further include a controller 300 and a motor 400, the controller 300 being configured to control the battery 200 to power the motor 400, for example, for start-up, navigation, and operational power requirements while traveling of the vehicle 1000.

In some embodiments of the present application, the battery 200 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. 2-4, a structure of a battery 200 according to some embodiments of the present disclosure is schematically illustrated. The battery 200 includes a case 23, a battery cell 21, and the heating device 1, the battery cell 21 being accommodated in the case 23, and the heating device 1 being mounted in the case 23. The case 23 is used to provide a receiving space for the battery cells 21, and the case 23 may have various structures. In some embodiments, the case 23 may include a first portion 231 and a second portion 232, the first portion 231 and the second portion 232 cover each other, and the first portion 231 and the second portion 232 together define a receiving space for receiving the battery cell 21. The first part 231 may be a hollow structure with an open end, the second part 232 may be a plate-shaped structure, and the first part 231 covers the open side of the second part 232, so that the first part 231 and the second part 232 define an accommodating space together; the first and

second portions

231 and 232 may be hollow structures with one side open, and the open side of the first portion 231 may cover the open side of the second portion 232. Of course, the box 23 formed by the first part 231 and the second part 232 can be in various shapes, such as a cylinder, a rectangular parallelepiped, and the like.

In the battery 200, the number of the battery cells 21 may be plural, and the plural battery cells 21 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 plural battery cells 21. The plurality of battery monomers 21 can be directly connected in series or in parallel or in series-parallel, and the whole formed by the plurality of battery monomers 21 is accommodated in the box body 23; of course, the battery 200 may also be a battery module formed by connecting a plurality of battery cells 21 in series, in parallel, or in series-parallel, and a plurality of battery modules are connected in series, in parallel, or in series-parallel to form a whole and accommodated in the case 23.

The battery cell 21 may include a lithium ion secondary battery, a lithium ion primary battery, a lithium sulfur battery, a sodium lithium ion battery, a sodium ion battery, a magnesium ion battery, or the like, which is not limited in the embodiments of the present application. The battery cell 21 may be a cylinder, a flat body, a rectangular parallelepiped, or other shapes, which is not limited in the embodiments of the present application. The battery cells 21 are generally divided into three types in an encapsulated manner: the battery pack comprises a cylindrical battery cell 21, a square battery cell 21 and a soft package battery cell 21, which are not limited in the embodiment of the present application.

The battery cell 21 includes an electrode assembly composed of a positive electrode tab, a negative electrode tab, and a separator, and an electrolyte. The battery cell 21 mainly operates by movement of metal ions between the positive electrode tab and the negative electrode tab. The positive plate comprises a positive current collector and a positive active substance layer, wherein the positive active substance layer is coated on the surface of the positive current collector, the current collector which is not coated with the positive active substance layer protrudes out of the current collector which is coated with the positive active substance layer, and the current collector which is not coated with the positive active substance layer is used as a positive electrode lug. Taking a lithium ion battery as an example, the material of the positive electrode current collector may be aluminum, and the positive electrode active material may be lithium cobaltate, lithium iron phosphate, ternary lithium, lithium manganate, or the like. The negative pole piece includes negative current collector and negative pole active substance layer, and the negative pole active substance layer coats in the surface of negative current collector, and the mass flow body protrusion in the mass flow body of coating the negative pole active substance layer of uncoated negative pole active substance layer, the mass flow body of uncoated negative pole active substance layer is as negative pole utmost point ear. The material of the negative electrode current collector may be copper, and the negative electrode active material may be carbon, silicon, or the like. In order to ensure that the fuse is not fused when a large current is passed, the number of the positive electrode tabs is multiple and the positive electrode tabs are stacked together, and the number of the negative electrode tabs is multiple and the negative electrode tabs are stacked together. The material of the diaphragm can be PP or PE, etc. In addition, the electrode assembly may have a winding structure or a lamination structure, and the embodiment of the present application is not limited thereto.

The battery 200 further comprises a heating device 1, the heating device 1 can be one or more, the heating device 1 can be installed on the outer wall of the battery monomer 21 and used for transmitting heat to the battery monomer 21, the temperature of the battery monomer 21 is within a normal working range, the chemical activity of the battery monomer 21 is improved, the power demand of a user on the battery 200 is met, and the power utilization device provided with the battery 200 can work normally.

The heating device 1 may be mounted by connecting members such as rivets, threads, or snaps, but is not limited thereto.

Referring to fig. 5 to 9, an embodiment of the present application provides a heating device 1, where the heating device 1 includes a heat conducting member 11 and a heating member 12, the heat conducting member 11 is configured to be mounted in a case 23 of a battery 200, the heat conducting member 11 has a receiving cavity 113 configured to receive a heat conducting medium 13, a side wall of the receiving cavity 113 is made of a flexible material, and at least a portion of the heating member 12 extends into the receiving cavity 113 and is capable of contacting the heat conducting medium 13.

In the present embodiment, the heating member 12 and the heat-conducting member 11 are members for generating heat and conducting heat, respectively, in the heating apparatus 1, wherein the heat-conducting member 11 is mounted on and in contact with the battery cell 21; the accommodating cavity 113 serves as a closed cavity of the heat conducting member 11, the accommodating cavity 113 is used for accommodating a medium capable of conducting heat, namely the heat conducting medium 13, the heat conducting medium 13 can be a medium with high heat conducting performance, such as gas, liquid, aerosol or elastic solid, the heat conducting medium 13 can deform or flow, and when the accommodating cavity 113 of the flexible side wall deforms, a space for the heat conducting medium 13 to deform or flow is provided, and the heat conducting medium 13 can deform or flow. In the embodiment of the present application, the heat transfer medium 13 is described as a liquid.

When the heating members 12 at least partially protrude into the accommodating chamber 113 and are in contact with the heat transfer medium 13, the heat generated by the heating members 12 may be transferred to the accommodating chamber 113 through the heat transfer medium 13 and transferred to the outside through the heat transfer member 11. Because the lateral wall that holds chamber 113 is flexible material, when the ageing deformation swell of the inside battery monomer 21 of battery 200, the heat-conducting piece 11 that has the flexibility and hold chamber 113 also deforms along with the deformation of battery monomer 21, heat-conducting piece 11 and battery monomer 21 keep good effectual heat transfer area, make heating member 12 pass through heat-conducting piece 11 and transmit the heat to battery monomer 21, guarantee that battery monomer 21's temperature is in normal operating temperature, battery monomer 21's chemical activity is in normal operating condition, thereby satisfy the user to battery 200's power demand.

Referring to fig. 9-10, the accommodating cavity 113 includes a first inner cavity 1131 and a second inner cavity 1132 which are communicated with each other, the first inner cavity 1131 and the second inner cavity 1132 are communicated, the first inner cavity 1131 is located below the second inner cavity 1132, and at least a portion of the heating element 12 extends into the first inner cavity 1131.

In this embodiment, the accommodating cavity 113 is divided into two mutually-penetrating portions, i.e., a first inner cavity 1131 and a second inner cavity 1132, which both accommodate the heat transfer medium 13 therein.

Because the heat produced by the heating element 12 can reduce the density of the heat-conducting medium 13 in the nearby area and flow upwards, when at least part of the heating element 12 extends into the first inner cavity 1131 located below the second inner cavity 1132, the heat can be conducted to the top end of the second inner cavity 1132 from bottom to top, after the heat is transferred to the battery monomer 21 by the heat-conducting medium 13, the temperature of the heat-conducting medium 13 is reduced and the density is increased, the heat-conducting medium 13 can flow downwards and approach to the heating element 12 to obtain energy again, so that a good heat transfer cycle is formed, the accommodating cavity 113 has enough heat from bottom to top and transfers to the battery monomer 21, the temperature of the battery monomer 21 is ensured to be within a normal range, the chemical activity of the battery monomer 21 is ensured to be in a normal working state, and the power demand of a user on the battery 200 is met.

Referring to fig. 9-10, the first interior cavity 1131 is a straight structure, and the heating element 12 extends through the first interior cavity 1131.

In this embodiment, the first inner cavity 1131 is a linear structure, that is, the first inner cavity 1131 is disposed along the length direction of the heating device 1, and the heating element 12 penetrates through the first inner cavity 1131, that is, the heating element 12 extends into the first inner cavity 1131 from one end of the heating device 1, contacts with the heat conducting medium 13, extends to the other end of the heating device 1 along the first inner cavity 1131, and extends out of the first inner cavity 1131.

Since the first internal cavity 1131 has a linear structure, and accordingly, the heating member 12 has a linear structure, the heating member 12 heats the heat transfer medium 13 in the vicinity area in the first internal cavity 1131, which has the advantage of being simple and easy to manufacture.

Referring to fig. 9-10, the second inner cavity 1132 includes a plurality of spaced sub-cavities, each of which is communicated with the first inner cavity 1131.

In this embodiment, the second inner cavity 1132 includes a plurality of separated cavities arranged at intervals, that is, the second inner cavity 1132 is divided into a plurality of parts for accommodating the heat conducting medium 13, and the separated cavities may be arranged at intervals along the length direction or at intervals along the height direction of the heating apparatus 1, and are communicated with the first inner cavity 1131.

Because the second inner cavity 1132 includes that a plurality of intervals set up and the branch chamber that link up with first inner cavity 1131 for the heat of first inner cavity 1131 can be through dividing the chamber and transmitting uniformly, makes heat-conducting piece 11 can transmit the heat to battery monomer 21 uniformly, makes battery monomer 21 can improve the temperature uniformly, guarantees that the inside chemical activity of battery monomer 21 can be in normal operating condition uniformly, thereby satisfies the user to battery 200's power consumption demand. When the sub-chambers are arranged at intervals along the length direction of the heating device 1, that is, the sub-chambers can be directly communicated with the first inner chamber 1131, the flow circulation of the heat-conducting medium 13 between the first inner chamber 1131 and the sub-chambers is promoted, and the efficiency of transferring heat to the battery cells 21 is further improved.

In another embodiment (not shown), the second inner cavity 1132 may also have a zigzag structure or an S-shaped structure.

In this embodiment, the second inner cavity 1132 includes a plurality of adjacent through segments, and when the second inner cavity 1132 is in a zigzag structure, the segments are perpendicular to each other in a straight structure, and when the second inner cavity 1132 is in an S-shaped structure, each two segments in a straight structure are connected to each other by a curved segment.

Second inner chamber 1132 is broken line type structure or S type structure, aims at make full use of the area of heat-conducting piece 11, increases second inner chamber 1132 to the area and the heat transfer efficiency of battery monomer 21 heat transfer to promote battery monomer 21 'S temperature and chemical activity, satisfy the user to battery 200' S power consumption demand.

In the above embodiment, referring to fig. 5 and 9, the heat conducting member 11 includes the mounting portion 111 and the heat conducting portion 112, the heat conducting portion 112 is provided with the accommodating cavity 113, and the heat conducting portion 112 is made of a flexible material.

In the present embodiment, the mounting portion 111 is a portion of the heat conductor 11 for connecting to another structure such as the battery cell 21 of the battery 200, and the heat conducting portion 112 is a portion of the heat conductor 11 for contacting the battery cell 21 and transferring heat, that is, transferring heat of the heat transfer medium 13 in the housing cavity 113 to the battery cell 21.

The heat conducting member 11 is connected with other structures such as the battery cell 21 of the battery 200 through the mounting portion 111, so that the heat conducting portion 112 can be stably contacted with the battery cell 21, and the heat conducting portion 112 is made of a flexible material and has deformability, so that under the condition of aging deformation of the battery cell 21, the heat conducting portion 112 can also deform along with the deformation of the battery cell 21, and an effective heat transfer area is maintained, so that the temperature of the battery cell 21 can be in a normal working range, the chemical activity of the battery cell 21 is in a normal working state, and the power consumption requirement of a user on the battery 200 is met.

Specifically, referring to fig. 5, 9 and 10, the mounting portion 111 is made of a rigid material and is provided with a first connection hole 1111, and the first connection hole 1111 is used for mounting the heat conducting member 11 in the box 23.

In this embodiment, the mounting portion 111 is located around the heat conducting portion 112, and the first connection holes 1111 are circular holes symmetrically disposed on the mounting portion 111 and are used for being connected to the battery cells 21 in the case 23.

Because installation department 111 is the rigidity material for heat-conducting member 11 can be through the stable connection of first connecting hole 1111 and box 23, prevents heat-conducting member 11 and battery monomer 21 inter motion, reduces the risk of heat conduction portion 112 wearing and tearing, improves heat-conducting member 11's life.

In the above embodiments, referring to fig. 9-10, the heat conducting member 11 and/or the heat conducting medium 13 are insulators.

In this embodiment, the heat conducting member 11 and/or the heat conducting medium 13 are made of a material poor in conducting current, i.e. an insulator, wherein the heat conducting member 11 may be made of a high molecular polymer, and the heat conducting medium 13 may be a liquid such as silicone oil, fluorinated liquid, and the like.

Since the heat-conducting member 11 and/or the heat-conducting medium 13 are insulators, the risk of the heating member 12 leaking electricity to break down the heating device 1 and the battery cells 21 can be reduced.

Referring to fig. 10, the heating member 12 includes a heating portion 121 and an electrical connection end 122, the heating portion 121 is located in the accommodating cavity 113, and the electrical connection end 122 is located at two ends of the heat conducting member 11.

In this embodiment, the mounting portion 111 is used as a boundary, the portion of the heating member 12 outside the heat-conducting member 11 is used as the electrical connection end 122, and the portion of the heating member 12 inside the heat-conducting member 11 is used as the heating portion 121. The electrical connection 122 is connected to a device that provides electrical power to deliver electrical current to the heating element 12 to cause the heating element 12 to generate heat. The electrical connection end 122 may be an electrical connection port or a combination of an electrical connection port and a cable. The heating member 12 is in contact with the heat transfer medium 13 inside the accommodating chamber 113, and transfers heat to the heat transfer medium 13. In addition, the mounting portion 111 provides a corresponding sealing interface for the heating member 12 to protrude from the outside of the heat-conducting member 11 into the accommodating chamber 113, preventing the heat-conducting medium 13 from leaking.

Divide heating member 12 into the electric connecting end 122 that is used for transmitting electric current and the heating portion 121 that produces heat for heating portion 121 can obtain external electric energy from heat-conducting member 11, and make heating portion 121 utilize the electric energy to produce heat only in holding chamber 113, both prevent the electric leakage accident, make the heat can be in holding chamber 113 and pass through heat-conducting medium 13 and transmit to battery monomer 21 fast again, reduce heat loss.

In one embodiment, the heating device 1 may further include a temperature sensor (not shown) disposed on an outer surface of the heat-conducting member 11.

In this embodiment, the temperature sensor may be mounted on the outer surface of the heat conducting member 11 by means of adhesion or connection, and the temperature of the heat conducting medium 13 may be indirectly measured by measuring the temperature of the outer surface of the heat conducting member 11, or the temperature of the heat conducting medium 13 may be directly measured by extending the measuring probe of the temperature sensor into the accommodating cavity 113 of the heat conducting member 11.

Through measuring the temperature of heat-conducting medium 13, can adjust the heating power of heating member 12 according to the temperature that records, prevent that heat-conducting medium 13 from overheated making and holding the intensity limit that chamber 113 internal pressure exceeded and hold chamber 113, reduce heat-conducting medium 13 from holding the risk that chamber 113 revealed, improve heating device 1's life.

Referring to fig. 3 to 4, the battery 200 includes a battery cell 21 and the heating device 1 in the above embodiment, and related technical effects are described with reference to the above embodiment and are not described herein again.

Specifically, as shown in fig. 3 to fig. 6, the battery 200 further includes a box 23, the battery cells 21 are located in the box 23, the battery 200 further includes a mounting plate 24 located in the box 23, the mounting plate 24 is located at an outer side of each battery cell 21, the heating device 1 is located between adjacent battery cells 21, the heating device 1 is connected to the housing 22 of the battery cell 21, and/or the heating device 1 is located between the mounting plate 24 and the outermost battery cell 21, and the heating device 1 is connected to the mounting plate 24 and the outermost housing 22 of the outermost battery cell 21.

In this embodiment, the battery 200 includes a plurality of battery cells 21 arranged at intervals along the second direction Y, and the heating device 1 is arranged between every two battery cells 21. The case 22 is disposed outside the battery cell 21, the case 22 has a second connection hole 221, the second connection hole 221 can be connected to the first connection hole 1111 of the mounting portion 111 of the heating device 1 by a rivet connection or a detachable connection, and the heating device 1 is mounted on the sidewall of the battery cell 21. The distance between the battery cells 21 is smaller than the thickness of the heating device 1 in a natural state, so that the heating device 1 can be tightly attached to the battery cells 21 on the two sides. In addition, for the heating device 1 mounted on the side wall of the battery cell 21 close to the box body 23, the mounting plate 24 is arranged on the side of the heating device 1 close to the box body 23, the mounting plate 24 is provided with a third connecting hole 241, and the first connecting hole 1111, the second connecting hole 221 and the third connecting hole 241 are connected together in a rivet connection or detachable connection mode, so that the heating device 1 on the outermost two sides of the battery 200 can be tightly attached to the battery cells 21 on the outermost two sides.

Through the installation setting, when the ageing deformation of battery monomer 21, have flexible heating device 1 and also can be along with battery monomer 21 deformation and deformation, heating device 1 keeps effectual heat transfer area with battery monomer 21, makes battery monomer 21's temperature be in normal operating range to promote battery monomer 21's chemical activity and be in normal condition, satisfy user's power consumption needs.

The present application also provides an electric device including the battery 200 in the above embodiment. The powered device may be any of the aforementioned devices or systems that employ the battery 200.

In one embodiment, referring to fig. 6, the heating device 1 is mounted to the side wall of the battery cell 21, and specifically, the first connection hole 1111 of the mounting portion 111 of the heat conducting member 11 is connected to the second connection hole 221 of the housing 22 of the battery cell 21 by rivets, so that the heat conducting portion 112 of the heat conducting member 11 contacts the side wall of the battery cell 21. Because heat conduction portion 112 is made by flexible material, heat conduction portion 112 can be along with battery monomer 21 ageing deformation and deformation, and heat conduction portion 112 and battery monomer 21 keep effectual heat transfer interface, reduce heat loss's risk, make battery monomer 21 also can keep normal operating temperature in cold environment, make battery monomer 21's chemical activity be in normal condition, satisfy the user demand to battery 200.

Specifically, as shown in fig. 10 to 11, an accommodating cavity 113 is disposed inside the heat conducting portion 112 and is used for accommodating a heat conducting medium 13 with insulating properties, such as silicon oil or fluorinated liquid, and the heat conducting medium 13 is used for uniformly distributing heat of the heating member 12 on the heat conducting portion 112, so that the heat is more uniformly transferred to the battery cells 21, and thus the temperature and chemical activity of the battery cells 21 in a cold environment can be uniformly increased, and the use requirement of the user on the battery 200 is met.

More specifically, as shown in fig. 11, the accommodating cavity 113 is divided into a first inner cavity 1131 and a second inner cavity 1132 from bottom to top along the height direction, the heating element 12 penetrates through the first inner cavity 1131 to contact with the heat conducting medium 13, under the heating action of the heating element 12, the temperature of the liquid heat conducting medium 13 rises and the density thereof decreases, the liquid heat conducting medium 13 flows upwards to the top end of the second inner cavity 1132 and transfers heat to the battery unit 21, and then the temperature of the heat conducting medium 13 decreases and the density thereof decreases, and the liquid heat conducting medium flows back to the first inner cavity 1131 from the second inner cavity 1132 again and is heated by the heating element 12, so that a heat transfer cycle from the heating element 12 to the battery unit 21 is formed.

Referring to fig. 4 to 5, in order to effectively utilize the heat transfer area of the heat conducting portion 112 and make the heat conducting portion 112 fully contact with the battery cells 21, a heating device 1 is disposed between two adjacent battery cells 21, and the width between two adjacent battery cells 21 is smaller than the thickness of the heating device 1; for the heating device 1 near the box 23, the mounting plate 24 is additionally arranged, so that the flexible heat conducting part 112 always keeps a sufficient heat transfer area with the battery monomer 21 under the condition that the battery monomer 21 is not deformed or deformed, the temperature and the chemical activity of the battery monomer 21 can be improved in a cold environment, and the electricity utilization requirement of the battery 200 by a user is met.

In addition, the heat conducting member 11 and the heat conducting medium 13 are made of insulating materials, so that the risk that the battery unit 21 is punctured by the heating member 12 under the condition of electrifying can be reduced.

Moreover, the temperature sensor (not shown in the figure) on the outer surface of the heat conducting member 11 is used for detecting the temperature of the heat conducting medium 13, adjusting the heating power of the heating member 12 in time, controlling the temperature of the heat conducting medium 13, preventing the pressure inside the accommodating cavity 113 from being too large and exceeding the strength limit of the accommodating cavity 113, reducing the leakage risk of the heat conducting medium 13 from the accommodating cavity 113, and prolonging the service life of the heating device 1.

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 heating device, characterized in that the heating device (1) comprises:

the heat conducting piece (11) is arranged in a box body (23) of the battery (200), the heat conducting piece (11) is provided with a containing cavity (113) used for containing a heat conducting medium (13), and the side wall of the containing cavity (113) is made of flexible materials;

a heating element (12), wherein at least part of the heating element (12) extends into the accommodating cavity (113) and can be in contact with the heat-conducting medium (13).

2. The heating device according to claim 1, wherein the receiving chamber (113) comprises a first inner chamber (1131) and a second inner chamber (1132) which are in communication;

the first inner cavity (1131) is located below the second inner cavity (1132), and at least a portion of the heating element (12) extends into the first inner cavity (1131).

3. The heating device of claim 2, wherein the first interior cavity (1131) is a straight structure and the heating element (12) extends through the first interior cavity (1131).

4. The heating device of claim 2, wherein the second inner chamber (1132) includes a plurality of spaced apart sub-chambers, each of the sub-chambers being in communication with the first inner chamber (1131).

5. The heating device of claim 2, wherein the second inner cavity (1132) has a polygonal line-shaped structure or an S-shaped structure.

6. The heating device according to any one of claims 1 to 5, wherein the heat-conducting member (11) includes a mounting portion (111) and a heat-conducting portion (112), the heat-conducting portion (112) being provided with the accommodating chamber (113);

the heat conducting part (112) is made of flexible materials.

7. A heating device according to claim 6, characterized in that the mounting portion (111) is of rigid material and is provided with a first connection hole (1111) for mounting the heat-conducting member (11) in the tank (23).

8. A heating device according to any one of claims 1-5, characterized in that the heat conducting member (11) and/or the heat conducting medium (13) is/are an insulator.

9. The heating device according to any one of claims 1 to 5, wherein the heating member (12) includes a heating portion (121) and electrical connection terminals (122), the heating portion (121) is located in the accommodating chamber (113), and the electrical connection terminals (122) are located at both ends of the heat conductive member (11).

10. A heating device according to any one of claims 1-5, characterized in that the heating device (1) further comprises a temperature sensor arranged on an outer surface of the heat-conducting member (11).

11. A battery, characterized in that the battery (200) comprises a battery cell (21) and a heating device (1) according to any one of claims 1 to 10.

12. The battery (200) of claim 11, wherein the battery further comprises a case (23), the battery cell (21) being located within the case (23);

the battery (200) further comprises a mounting plate (24) positioned in the box body (23), and the mounting plate (24) is positioned outside each battery unit (21);

the heating device (1) is arranged between the adjacent battery cells (21), the heating device (1) is connected with the shell (22) of the battery cells (21), and/or the heating device (1) is arranged between the mounting plate (24) and the battery cells (21) positioned at the outermost side, and the heating device (1) is connected with the mounting plate (24) and the shell (22) of the battery cells (21) positioned at the outermost side.

13. An electric consumer, characterized in that it comprises a battery (200) according to claim 11 or 12.