CN214706053U - Heating device, battery module and vehicle - Google Patents

Abstract

The utility model discloses a heating device, battery module and vehicle, heating device includes: the magnetic field generator is suitable for being connected with an alternating power supply and comprises a plurality of first sections and connecting sections, and the adjacent first sections are connected through the connecting sections; the heating body comprises a plurality of heating bodies, the heating bodies and the first sections are arranged in a one-to-one correspondence mode, a containing cavity is arranged in each heating body, the extending direction of the containing cavity is the same as the extending direction of the first sections, at least one part of each first section is located in the containing cavity to enable the heating body to wrap at least one part of the first sections, and the inductive magnetic field acts on the heating bodies to enable the heating bodies to heat. Therefore, the magnetic field generator is matched with the heating body, the heating device is simple in structure, does not need to occupy a large amount of space, is high in safety and high in heat conduction efficiency, meanwhile, the structure that the heating body is located in the magnetic field can be increased, the heating efficiency of the heating body can be improved, and the heating efficiency of the heating device can be improved.

Description

Heating device, battery module and vehicle

Technical Field

The utility model belongs to the technical field of the heating and specifically relates to a heating device, battery module and vehicle are related to.

Background

In the technology of a power battery system of a related electric automobile, in order to improve the low-temperature performance of the battery system, ensure that the battery can be quickly charged in cold seasons, reduce the charging waiting time and the like, a heating device is generally arranged in a battery pack. The existing heating devices are generally classified into two types, one type is heating by using a refrigerant, such as a common liquid cooling and liquid heating structure or a direct cooling and direct heating structure; another type is resistive heating, such as the common heating PTC or heating film, etc.

When the refrigerant is adopted for heating, the liquid cooling plate and the pipeline need good sealing performance, on one hand, the cost is increased, on the other hand, a large amount of space is occupied, and once the refrigerant is leaked, potential safety hazards can be caused.

When the resistance is used for heating, the heating mode has low heat transfer efficiency, the resistance wire is easy to generate high-temperature oxidation in the heating process, and the service life is short.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the present invention is to provide a heating device, which does not occupy a large amount of space, and has high safety and high heat conduction efficiency.

The utility model discloses still provide a battery module who has above-mentioned heating device.

The utility model discloses provide a vehicle with above-mentioned battery module again.

According to the utility model discloses a heating device includes: the magnetic field generator comprises a magnetic field generator, a power supply and a power supply, wherein the magnetic field generator is suitable for being connected with an alternating power supply, the alternating power supply is suitable for supplying alternating current to the magnetic field generator so that the magnetic field generator generates an inductive magnetic field, the magnetic field generator comprises a plurality of first sections and connecting sections, the plurality of first sections are arranged at intervals, and the adjacent first sections are connected through the connecting sections to form the magnetic field generator; a plurality of heat-generating bodies, it is a plurality of the heat-generating body with a plurality of first sections one-to-one sets up, every be equipped with in the heat-generating body and hold the chamber, hold the extending direction in chamber with first section extending direction is the same, every at least some of first section is located hold the intracavity so that the heat-generating body parcel at least some of first section, the inductive magnetic field is used for make on the heat-generating body generates heat.

According to the utility model discloses a heating device through heat-generating body and magnetic field generator cooperation, can make heating device simple structure, need not to occupy a large amount of spaces to heating device security is high, and heat conduction efficiency is higher, simultaneously, also can increase the structure that the heat-generating body is located the magnetic field, can improve the efficiency of generating heat of heat-generating body, thereby can improve heating device's heating efficiency.

In some embodiments of the present invention, each of the first segments is formed as a straight segment, and each of the connecting segments is formed as a bent segment.

In some embodiments of the present invention, the magnetic field generator is wrapped with an insulating layer, and the heating element wraps the insulating layer.

In some embodiments of the present invention, each of the first segments is electrically connected to the corresponding second metal connecting end of the connecting segment through a first metal connecting end, so that the connected first segments are electrically connected to the connecting segment.

In some embodiments of the present invention, the magnetic field generator further includes a first insulating layer, and the first insulating layer is wrapped at a joint of each of the first metal connecting end and the corresponding second metal connecting end.

In some embodiments of the present invention, the first metal connecting end is provided with a first thinning portion, and the second metal connecting end is provided with a second thinning portion, and the first thinning portion and the second thinning portion are electrically connected and fitted.

In some embodiments of the present invention, the first metal connecting end and the second metal connecting end are fixedly connected by a fixing connector.

In some embodiments of the present invention, the magnetic field generators are arranged on the same plane.

In some embodiments of the present invention, each of the heat generating bodies includes a first metal plate and a covering plate, the first metal plate is formed in a flat plate shape, the covering plate covers the first metal plate, the first metal plate and the covering plate define therebetween the accommodating cavity adapted to the first section, and the first section is placed in the accommodating cavity.

In some embodiments of the present invention, each of the heat generating bodies is a hollow metal tube adapted to the first section so as to define the accommodating chamber.

In some embodiments of the present invention, the thickness of the heating element ranges from 0.2mm to 0.5 mm.

In some embodiments of the present invention, the heating device further comprises a temperature-equalizing fixing plate, and the temperature-equalizing fixing plate is fixed on the heating element.

According to the utility model discloses a battery module includes: a box body; the battery cell is arranged in the box body; the heating device is arranged on the battery cell to heat the battery cell, and the heating device is the heating device.

According to the utility model discloses a battery module, through adopting magnetic field generator and heat-generating body, utilize the electromagnetic induction law, the magnetic field of the change that the magnetic field generator produced can produce induced-current in the heat-generating body in to the joule heat effect that utilizes induced-current generates heat, the heat-generating body that generates heat can heat electric core, compare with the refrigerant heating and the resistance heating of correlation technique, simple structure not only need not to occupy a large amount of spaces, and the security is high moreover, and heat conduction efficiency is higher. Simultaneously because at least a part of every straightway is located and holds the intracavity, consequently can increase the structure that the heat-generating body is located the magnetic field, further improve the efficiency of generating heat of heat-generating body, can improve heating device's heating efficiency, can reduce the battery module in the waiting time that charges in cold season, be favorable to quick charge.

In some embodiments of the present invention, the heating device is disposed at the top and/or bottom of the battery cell.

In some embodiments of the present invention, the electric core is multiple, and the heating device is disposed between the electric cores.

According to the utility model discloses a vehicle, including foretell battery module.

According to the utility model discloses the vehicle, through setting up foretell battery module, through adopting magnetic field generator and heat-generating body, utilize the electromagnetic induction law, the magnetic field of the change that the magnetic field generator produced can produce induced-current in the heat-generating body, and the joule heat effect that utilizes induced-current generates heat, the heat-generating body that generates heat can heat electric core, compare with the refrigerant heating and the resistance heating of correlation technique, simple structure not only, need not to occupy a large amount of spaces, and the security is high moreover, and heat conduction efficiency is higher. Simultaneously because at least a part of every straightway is located and holds the intracavity, consequently can increase the structure that the heat-generating body is located the magnetic field, further improve the efficiency of generating heat of heat-generating body, can improve heating device's heating efficiency, can reduce the battery module in the waiting time that charges in cold season, be favorable to quick charge.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic view of a heating device according to an embodiment of the present invention;

fig. 2 is an exploded view of a heating device according to an embodiment of the present invention;

FIG. 3 is an enlarged view at A in FIG. 2;

fig. 4 is an assembly view of a heating element, a magnetic field generator, and a connecting member of a heating apparatus according to an embodiment of the present invention;

fig. 5 is a schematic view of an eddy current magnetic field of a heating device according to an embodiment of the present invention;

fig. 6 is a schematic view of the assembly of the first metal plate, the cover plate and the magnetic field generator of the heating device according to an embodiment of the present invention;

fig. 7 is a schematic diagram of a battery module according to an embodiment of the present invention.

Reference numerals:

a heating device 100;

a heating element 10; a housing chamber 11; a first metal plate 12; a cover plate 13;

a magnetic field generator 20; a first section 21; a connecting section 22; a first metal connection terminal 23; a second metal connection end 24; the first thinning portion 25; the second thinned portion 26;

a second insulating layer 30;

a temperature equalizing fixing plate 40; vortex current a;

a first insulating layer 60; a fixed connector 70;

a battery module 200;

a case 201; and (3) an electric core 202.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

A heating device 100 according to an embodiment of the present invention is described below with reference to fig. 1 to 7. The heating device 100 may be used to heat the battery core 202 of a vehicle, where the vehicle may be a new energy vehicle such as an electric vehicle or an oil-electric hybrid electric vehicle. It is of course understood that the heating device 100 of the embodiment of the present invention may be applied to heating any object to be heated that needs to be heated.

As shown in fig. 1 to 7, a heating apparatus 100 according to an embodiment of the present invention includes: a magnetic field generator 20 and a plurality of heating elements 10. The magnetic field generator 20 is adapted to be connected to an alternating power supply adapted to supply an alternating current to the magnetic field generator to cause the magnetic field generator 20 to generate an inductive magnetic field, the magnetic field generator 20 comprising a plurality of first segments 21 and a connecting segment 22, the plurality of first segments 21 being arranged at intervals, adjacent first segments 21 being connected by the connecting segment 22 to form the magnetic field generator 20. The plurality of heating bodies 10 are arranged in one-to-one correspondence with the plurality of first sections 21, the accommodating cavity 11 is arranged in each heating body 10, the extending direction of the accommodating cavity 11 is the same as the extending direction of the first sections 21, at least one part of each first section 21 is positioned in the accommodating cavity 11 so that the heating body 10 wraps at least one part of the structure of the first sections 21, and the inductive magnetic field acts on the heating body 10 to enable the heating body 10 to heat.

The magnetic field generator 20 is constructed in a split structure, and further, a plurality of first segments 21 may be arranged in parallel or adjacent straight segments 21 may be vertically formed in a zigzag structure. Further, the plurality of first segments 21 are spaced apart in the front-rear direction in fig. 2, and both ends of each first segment 21 of a part of the first segments 21 are connected to its adjacent first segment 21 by the connecting segments 22, so that the structure of the heating apparatus 100 can be simplified. It is understood that, as shown in fig. 2, when the magnetic field generator 20 includes a plurality of first segments 21 arranged in parallel, current flows in opposite directions may pass between adjacent first segments 21.

In some specific examples of the present invention, the intervals of the plurality of first segments 21 are the same, so that the heat generation uniformity of different positions of the heat generating body 10 is improved.

Specifically, one end of the magnetic field generator 20 is connected to the positive electrode of the alternating power source, and the other end of the magnetic field generator 20 is connected to the negative electrode of the alternating power source. All be equipped with in every heat-generating body 10 and hold chamber 11, a plurality of heat-generating bodies 10 and a plurality of first section 21 one-to-one setting, at least partly be located and hold chamber 11 in order to make heat-generating body 10 parcel first section 21 of every first section 21, it should be noted that, a heat-generating body 10 parcel is in a first section 21 outside, so can guarantee to hold chamber 11 and first section 21 structural shape roughly the same, can guarantee that first section 21 can install in holding chamber 11.

The heating device 100 of the present invention utilizes the law of electromagnetic induction and the eddy current heating effect. According to the magnetic effect of the current, when an alternating current, for example, a high-frequency alternating current, is supplied from an alternating power supply to the magnetic field generator 20, a changing magnetic field is generated in the space around the magnetic field generator 20, and the larger the current flowing through the magnetic field generator 20, the stronger the magnetic field intensity generated. According to the right-handed screw rule (also called ampere rule), the magnetic field generated by the magnetic field generator 20, for example, the first segment 21, is distributed concentrically, and the magnetic field is distributed around the first segment 21. According to the law of electromagnetic induction, the magnitude and direction of the magnetic field generated by the magnetic field generator 20 change as the magnitude and direction of the current in the magnetic field generator 20 change. According to the law of electromagnetic induction, the changing magnetic field will generate an induced current in the heating body 10 located therein, and the heating body 10 generates heat using the joule heat effect of the induced current.

As described above, since the alternating current is supplied to the magnetic field generator 20, the changing magnetic field generated by the magnetic field generator 20 induces the current in the heating element 10, and generates heat by the joule heat effect of the induced current, that is, the heating element 10 generates heat, and when the heating apparatus 100 is applied to the battery module 200, the heating element 10 that generates heat can heat the battery cell 202. In some examples of the present invention, the heating element 10 is a metal member, for example, the heating element 10 may be made of iron, so that the magnetic permeability of the heating element 10 is high, the induced magnetic field may be better, the eddy current may be formed, and the heat conduction rate may be higher.

It should be noted that, because at least a part of structure with every first section 21 is located and holds the chamber 11 so that the heat-generating body 10 wraps up first section 21, consequently the heat-generating body 10 can be located the magnetic field that the magnetic field generator 20 produced, compare with directly placing the magnetic field generator 20 on a flat board, according to the utility model discloses the part that is located the magnetic field of heat-generating body 10 of heating device 100 is more to can increase the heating efficiency of heat-generating body 10, and then can promote the temperature rise rate of heat-generating body 10 when heating, make heat exchange efficiency promote by a wide margin, and, heat-generating body 10 can evenly generate heat under the effect of inductive magnetic field.

The inventor directly places a wire on the surface of the metal plate after bending to detect the heat generation rate of the metal plate (for convenience of description, referred to as a contrast test in the following), and the inventor finds the magnetic field generator 20 with the same length through a plurality of tests, and the heat generation rate detected by the contrast test is lower than that of the heating body 10 of the heating device 100 according to the embodiment of the present invention.

According to the utility model discloses heating device 100, through adopting magnetic field generator 20 and heat-generating body 10, utilize the law of electromagnetic induction, the magnetic field of the change that magnetic field generator 20 produced can produce induced-current on heat-generating body 10, and the joule heat effect that utilizes induced-current generates heat, heat-generating body 10 that generates heat can treat the heat-generating body and heat, compare with the refrigerant heating and the resistance heating of correlation technique, simple structure not only need not to occupy a large amount of spaces, and the security is high moreover, and heat conduction efficiency is higher. Meanwhile, at least a part of the structure of each first section 21 is positioned in the accommodating cavity 11 so that the heating element 10 wraps the first section 21, so that the structure of the heating element 10 in the magnetic field can be increased, the heating efficiency of the heating element 10 is further improved, and the heating efficiency of the heating device 100 can be improved.

Thus, the magnetic field generator 20 and the heat generating body 10 are engaged with each other, so that the heating device 100 can be configured to be simple without occupying a large space, the heating device 100 can be highly safe, the heat conduction efficiency is high, and the structure in which the heat generating body 10 is located in the magnetic field can be increased, thereby improving the heat generating efficiency of the heat generating body 10 and the heating efficiency of the heating device 100.

Further, each first segment 21 is formed as a straight segment 21, and each connecting segment 22 is formed as a bent segment 22. Adjacent straight segments 21 are connected by a bent segment 22 to form a meandering magnetic field generator 20. It is understood that the more straight line segments 21 of the magnetic field generator 20, i.e., the more times the magnetic field generator 20 is bent, the larger the heat generation rate of the heat generating body 10, i.e., the larger the heating power of the heating apparatus 100. When the heating device 100 according to the embodiment of the present invention is applied to the battery module 200 to heat the battery cell 202, the setting number of the straight line segments 21, the distance between the adjacent straight line segments 21, etc. (i.e. the density of the magnetic field generator 20) can be adjusted according to the distribution of the battery cell 202, so as to control the heating effect of the heating device 100.

In some embodiments of the present invention, each first segment 21 is electrically connected to the second metal connecting end 24 of the corresponding connecting segment 22 through the first metal connecting end 23, so that the first segment 21 and the connecting segment 22 that are connected to each other can be electrically connected, and the whole magnetic field generator 20 can be supplied with current, thereby ensuring the working performance of the magnetic field generator 20.

In some embodiments of the present invention, as shown in fig. 2, the magnetic field generator 20 may further include: the first insulating layer 60 wraps the joint of each first metal connecting end 23 and the corresponding second metal connecting end 24, the first insulating layer 60 can play a role in protection, electric leakage at the joint of the first metal connecting end 23 and the second metal connecting end 24 can be avoided, and therefore the use safety of the heating device 100 can be guaranteed.

In some embodiments of the present invention, as shown in fig. 2 and fig. 3, the first metal connecting end 23 may be provided with a first thinning portion 25, the second metal connecting end 24 may be provided with a second thinning portion 26, the first thinning portion 25 and the second thinning portion 26 are electrically connected and matched, so as to facilitate the connection of the first metal connecting end 23 and the second metal connecting end 24, the assembling efficiency of the first metal connecting end 23 and the second metal connecting end 24 can be improved, and the thickness of the joint of the first metal connecting end 23 and the second metal connecting end 24 can be prevented from being increased, so that the thickness of the magnetic field generator 20 can be more uniform.

In some embodiments of the present invention, as shown in fig. 2 and 4, the first metal connecting end 23 and the second metal connecting end 24 can be fixedly connected by a fixing connector 70, the fixing connector 70 penetrates through the first insulating layer 60 to fixedly connect the first metal connecting end 23 and the second metal connecting end 24, and the fixing connector 70 can be set as a rivet, the first metal connecting end 23 and the second metal connecting end 24 can be tightly mounted together by the rivet, the first metal connecting end 23 and the second metal connecting end 24 can be prevented from being separated, so that the mounting reliability of the first metal connecting end 23 and the second metal connecting end 24 can be improved.

In some embodiments of the present invention, the magnetic field generator 20 is wrapped with an insulating layer, the insulating layer is the second insulating layer 30, and the heating element 10 wraps the insulating layer (i.e., the second insulating layer 30). Wherein, first section 21 and linkage segment 22 all can set up to female arranging, first section 21 outside parcel has second insulating layer 30, heat-generating body 10 can set up to deformable metalwork, heat-generating body 10 parcel is on second insulating layer 30, second insulating layer 30 can set up to thin mica sheet, second insulating layer 30 also can set up to the material that plays the same effect with thin mica sheet, can prevent through setting up second insulating layer 30 that magnetic field from taking place body 20 electric leakage to heat-generating body 10 on, thereby can promote heating device 100's safety in utilization.

In some embodiments of the present invention, the magnetic field generating bodies 20 are arranged on the same plane, and it can also be understood that the plurality of first sections 21 and the plurality of connecting sections 22 of the magnetic field generating bodies 20 are arranged to form a plane, so that the structure of the magnetic field generating bodies 20 is more smooth, and the heating body 10 can be conveniently wrapped around the magnetic field generating bodies 20.

In some embodiments of the present invention, in the length extending direction of the heating element 10, the first insulating layer 60 is located outside the heating element 10, so that the first insulating layer 60 can be prevented from being disposed between the heating element 10 and the linear section 21, and the first insulating layer 60 can be prevented from being scratched by the heating element 10, thereby preventing the first metal connecting end 23 and/or the second metal connecting end 24 from being exposed.

In some embodiments of the present invention, the end of the first insulating layer 60 and the end of the heating element 10 are contacted with each other, so that the first insulating layer 60 and the heating element 10 can be tightly attached to each other, and the first metal connecting end 23 can be further prevented from being exposed, thereby further preventing the first metal connecting end 23 from leaking electricity.

In some embodiments of the present invention, the outer peripheral wall of the first insulating layer 60 is flush with the outer peripheral wall of the heating element 10, so that the magnetic field generator 20 and the heating element 10 can be more smoothly assembled, and the heating device 100 can be easily mounted on the object to be heated.

According to an embodiment of the present invention, as shown in fig. 6, each of the heating elements 10 may include a first metal plate 12 and a covering plate 13, the first metal plate 12 is formed into a plate-like structure, it should be explained that each of the heating elements 10 includes a first metal plate 12, the first metal plates 12 are formed into a plate-like structure, and a portion of one plate-like structure corresponding to the covering plate 13 is the first metal plate 12 thereof. The cover plate 13 covers the first metal plate 12, and the first metal plate 12 and the cover plate 13 define a receiving cavity 11 therebetween, which is adapted to the first section 21, and the first section 21 is placed in the receiving cavity 11. The first section 21 of the magnetic field generator 20 is placed on the first metal plate 12, the cover plate 13 covers the first section 21 and is connected with the first metal plate 12, the extending direction of the cover plate 13 is the same as the extending direction of the first section 21, wherein the longitudinal section of the cover plate 13 can be semi-circular arc, quadrangle or triangle, the arrangement can simplify the structure of the heating element 10, facilitate the assembly of the heating element 10 and the magnetic field generator 20, and make the structure of the heating element 10 suitable.

According to another embodiment of the present invention, as shown in fig. 4, each heating element 10 can be configured as a hollow metal tube adapted to the first section 21, and the metal tube can define the accommodating cavity 11. In the prior art, the heating body is arranged above or below the magnetic field generating body in parallel, so that most of energy contained in the magnetic lines of force is lost in the air, and only a small part of energy is gathered in the heating body to generate joule heat. In this application, the heating element 10 is a hollow metal tube, the heating element 10 is wrapped outside the first section 21, that is, the metal tube is arranged around the first section 21 for a circle, the first section 21 penetrates through the heating element 10, so that magnetic lines of force of the magnetic field generated by the first section 21 for a circle can be cut by the heating element 10, and most of the magnetic lines of force radiated to the heating element 10 penetrate through the heating element 10, therefore, the heating element 10 can absorb energy radiated in most of the magnetic lines of force, namely, the function of shielding the energy radiated by the magnetic field generator 20 is achieved, and the energy radiated by the magnetic field generator is converted into joule heat, so that the heating efficiency of the heating element 10 can be further improved, and the heating efficiency of the heating device 100 can be further improved.

Further, the heating element 10 should be disposed as close to the first stage 21 as possible, that is, the distance between the heating element 10 and the first stage 21 should be minimized, so that the leakage flux between the heating element 10 and the magnetic field generator 20 can be reduced, and the loss of magnetic energy in the air can be reduced.

Further, the heating element 10 may be made of iron or a metal sheet with high magnetic permeability, so that the heating element 10 can better induce a magnetic field to form a vortex current, and the heating element 10 can have a high heat conduction rate.

In the utility model discloses a further embodiment, the longitudinal section of tubular metal resonator can set up to circular or square or oval or flat shape, specifically, the tubular metal resonator can wrap up first section 21 can. The heating body 10 can also be set as an iron foil, the first section 21 is wrapped by the iron foil, the manufacturing cost of the iron foil is lower, the use is convenient, and the heating body can be adapted to the length of the first section 21 to wrap the first section 21.

In a further embodiment of the present invention, the thickness of the heat generating body 10 has a value range of 0.2mm to 0.5mm, wherein, when the heat generating body 10 is a metal member, for example: when the heating element 10 is made of iron, the thickness of the heating element 10 affects the heating efficiency of the heating element 10, and the thickness of the heating element 10 is too thin or too thick, so that the heating efficiency of the heating element 10 can be ensured by setting the thickness value range of the heating element 10 to 0.2mm-0.5 mm.

In a further embodiment of the present invention, as shown in fig. 1 and 2, the heating device 100 may further include a temperature-equalizing fixing plate 40, the temperature-equalizing fixing plate 40 is fixed on the heating element 10, the temperature-equalizing fixing plate 40 may be configured as a flat plate structure, one surface of the temperature-equalizing fixing plate 40 contacts with the heating element 10, and the other surface of the temperature-equalizing fixing plate 40 contacts with the heated object. Wherein when the heating apparatus 100 is used to heat an object such as the electric core 202, the temperature uniforming fixing plate 40 is brought into contact with the object to be heated, whereby the heat generated by the heating body 10 can be uniformly dispersed to the object to be heated. Specifically, the temperature-equalizing fixing plate 40 may be attached to the heating body 10 by means of adhesion or the like. Specifically, the temperature-equalizing fixing plate 40 may be a metal plate with good thermal conductivity, and preferably, the temperature-equalizing fixing plate 40 is made of an aluminum thin plate with good thermal conductivity and light weight.

Further, when a high-voltage alternating current is supplied to the magnetic field generator 20, an electromagnetic field is generated around the current, and the electromagnetic field generates electromagnetic impedance in the heating element 10, thereby generating a vortex current a, and generating heat around the countless minute vortex currents a.

It should be noted that, by sleeving the heating element 10 on the outer side of the straight line segment 21, the heating element 10 may form a shielding layer, and the heating element 10 may shield electromagnetic interference of the straight line segment 21 to components in the battery module 200.

As shown in fig. 7, the battery module 200 according to the embodiment of the present invention includes: the battery comprises a box 201, a battery cell 202 and the heating device 100, wherein the battery cell 202 is arranged in the box 201. Heating device 100 is provided on electric core 202 to heat electric core 202, and heating device 100 is according to the above-mentioned embodiment of the present invention.

According to the utility model discloses battery module 200, through adopting magnetic field generator 20 and heat-generating body 10, utilize the law of electromagnetic induction, the magnetic field of the change that magnetic field generator 20 produced can produce induced-current in heat-generating body 10 on, and the joule heat effect that utilizes induced-current generates heat, the heat-generating body 10 that generates heat can heat electric core 202, compare with the refrigerant heating and the resistance heating of correlation technique, simple structure not only, need not to occupy a large amount of spaces, and the security is high moreover, heat conduction efficiency is higher. Meanwhile, at least a part of the structure of each first section 21 is located in the accommodating cavity 11 so that the heating element 10 wraps the first section 21, so that the structure of the heating element 10 in the magnetic field can be increased, the heating efficiency of the heating element 10 is further improved, the heating efficiency of the heating device 100 can be improved, the charging waiting time of the battery module 200 in cold seasons can be reduced, and quick charging is facilitated.

In some embodiments of the present invention, the heating device 100 is disposed on the top and/or bottom of the battery cell 202, the bottom of the box 201 is open, and the heating device 100 is disposed on the bottom of the box 201 to open the bottom of the box 201, so as to increase the space utilization rate of the battery module 200. It is of course understood that the heating device 100 may be disposed elsewhere, for example, may be disposed in the box 201 and below the battery cell 202, or may be disposed above the battery cell 202, and the heating device 100 may be disposed at a corresponding position according to the overall heating requirement of the battery cell 202.

In some embodiments of the present invention, the battery cells 202 are multiple, and the heating device 100 is disposed between the adjacent battery cells 202, so as to ensure that all of the battery cells 202 can be heated.

The utility model discloses an in some embodiments, battery module 200 only adopts heating device 100 to realize the eddy current heating to electric core 202, because the thermal insulation performance at battery module 200 middle part is better, and the temperature decline rate at battery module 200 middle part is compared battery module 200 slower all around, consequently for balanced battery module 200 holistic heating temperature, can make battery module 200 set up all around the density that magnetic field generator 20's that sets up density is greater than the density that the middle part of battery module 200 set up.

In other embodiments of the utility model, battery module 200 adopts the self-heating mode to heat, and use heating device 100's vortex heating as auxiliary heating, because battery module 200 is concentrated at the battery port from the mode heating efficiency of heating, the efficiency of generating heat concentrates at the both ends of battery module 200 promptly, the self-heating inefficiency of the middle part of battery module 200, then under this kind of condition, can make the density of the magnetic field generator 20 at battery module 200 middle part be greater than battery module 200 density all around, with the holistic heating temperature of balanced battery module 200.

In other embodiments of the utility model, the samming fixed plate 40 can bond on electric core 202 through heat conduction structure glue, and electric core 202 and heating device 100 are born to box 201, because heating device 100 is close the flat structure, can arrange in the below of electric core 202, perhaps heating device 100 can be integrated with box 201, become the bottom plate of box 201 to increase battery module 200's volume utilization ratio.

According to the utility model discloses the vehicle, include according to the utility model discloses the battery module 200 of above-mentioned embodiment.

According to the utility model discloses vehicle, through setting up foretell battery module 200, through adopting magnetic field generator 20 and heat-generating body 10, utilize the law of electromagnetic induction, the magnetic field of the change that magnetic field generator 20 produced can produce induced-current in heat-generating body 10, and utilize the joule heat effect of induced-current to generate heat, the heat-generating body 10 that generates heat can heat electric core 202, compare with the refrigerant heating and the resistance heating of correlation technique, simple structure not only, need not to occupy a large amount of spaces, and the security is high, heat conduction efficiency is higher. Meanwhile, at least a part of the structure of each first section 21 is located in the accommodating cavity 11 so that the heating element 10 wraps the first section 21, so that the structure of the heating element 10 in the magnetic field can be increased, the heating efficiency of the heating element 10 is further improved, the heating efficiency of the heating device 100 can be improved, the charging waiting time of the battery module 200 in cold seasons can be reduced, and quick charging is facilitated.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (16)

1. A heating device, comprising:

the magnetic field generator comprises a magnetic field generator, a power supply and a power supply, wherein the magnetic field generator is suitable for being connected with an alternating power supply, the alternating power supply is suitable for supplying alternating current to the magnetic field generator so that the magnetic field generator generates an inductive magnetic field, the magnetic field generator comprises a plurality of first sections and connecting sections, the plurality of first sections are arranged at intervals, and the adjacent first sections are connected through the connecting sections to form the magnetic field generator;

a plurality of heat-generating bodies, it is a plurality of the heat-generating body with a plurality of first sections one-to-one sets up, every be equipped with in the heat-generating body and hold the chamber, hold the extending direction in chamber with first section extending direction is the same, every at least some of first section is located hold the intracavity so that the heat-generating body parcel at least some of first section, the inductive magnetic field is used for make on the heat-generating body generates heat.

2. The heating device of claim 1, wherein each of the first segments is formed as a straight segment and each of the connecting segments is formed as a bent segment.

3. The heating device of claim 1, wherein the magnetic field generator is externally wrapped with an insulating layer, and the heating element is wrapped with the insulating layer.

4. The heating apparatus as claimed in claim 1, wherein each of the first segments is electrically connected to the second metal connecting end of the corresponding connecting segment through a first metal connecting end, so that the connected first segment and the connecting segment are electrically connected.

5. The heating device as claimed in claim 4, wherein the magnetic field generator further comprises a first insulating layer, and a junction of each of the first metal connection terminals and the corresponding second metal connection terminal is wrapped with the first insulating layer.

6. The heating device as claimed in claim 5, wherein the first metal connecting end is provided with a first thinned portion, the second metal connecting end is provided with a second thinned portion, and the first thinned portion and the second thinned portion are electrically coupled.

7. The heating device of claim 4, wherein the first metal connecting end and the second metal connecting end are fixedly connected by a fixed connection.

8. The heating device according to claim 1, wherein the magnetic field generators are arranged on the same plane.

9. The heating apparatus as claimed in claim 1, wherein each of the heat-generating bodies includes a first metal plate formed in a flat plate shape and a cover plate that covers the first metal plate, and the first metal plate and the cover plate define therebetween the accommodation chamber that is fitted with the first section, the first section being placed in the accommodation chamber.

10. The heating device of claim 1, wherein each of the heat-generating bodies is a hollow metal tube fitted with the first segment to define the receiving chamber.

11. The heating device according to claim 1, wherein a thickness of the heating body ranges from 0.2mm to 0.5 mm.

12. The heating apparatus according to any one of claims 1 to 11, further comprising a temperature-uniforming fixing plate fixed to the heating body.

13. A battery module, comprising:

a box body;

the battery cell is arranged in the box body;

a heating device provided on a battery cell to heat the battery cell, the heating device being according to any one of claims 1-12.

14. The battery module according to claim 13, wherein the heating device is provided at the top and/or bottom of the cell.

15. The battery module of claim 13, wherein the cells are multiple, and the heating device is disposed between the cells.

16. A vehicle characterized by comprising the battery module according to any one of claims 13 to 15.

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