CN217848099U - Temperature equalizing plate, power battery and new energy automobile - Google Patents

Abstract

The embodiment of the utility model provides a temperature-uniforming plate, power battery and new energy automobile relates to the power battery field. This temperature-uniforming plate includes plate body and heater strip, and the plate body includes main part board and sets up the first extension board and the second extension board at main part board both ends respectively. The main body plate is used for being matched and arranged between two adjacent electric core groups, the first extension plate is used for extending one end boundary of the two adjacent electric core groups, and the second extension plate is used for extending the other end boundary of the two adjacent electric core groups. The plate body is provided with the mounting groove, and the mounting groove is including offering in proper order the first mounting groove of first extension board, offering in the main mounting groove of main part board and offering in the second mounting groove of second extension board. The heater strip includes first heating section, main heating section and the second heating section that connects gradually. Through such structure setting, be favorable to realizing the samming of electric core group to improve its life.

Description

Temperature equalizing plate, power battery and new energy automobile

Technical Field

The utility model relates to a power battery field particularly, relates to a temperature-uniforming plate, power battery and new energy automobile.

Background

The power battery of the new energy automobile generally comprises a plurality of electric core groups, and currently, for the new energy automobile, in order to improve the endurance of the automobile in winter or other low-temperature environments, the power battery needs to be preheated to meet the automobile using requirements in winter. In the prior art, there are some solutions, such as placing a heating device in the electric core group to achieve preheating.

However, in the prior art, due to the design defects of the heating device, the temperature difference exists between the middle position and the end position of the electric core group, and the service life of the electric core group is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a samming board, power battery and new energy automobile, its samming that can realize the electric core group improves its life.

The embodiment of the utility model discloses a can realize like this:

an embodiment of the utility model provides a temperature-uniforming plate, it includes:

the plate body comprises a main body plate, and a first extension plate and a second extension plate which are respectively arranged at two ends of the main body plate, wherein the main body plate is arranged between two adjacent electric core groups in a matched manner, the first extension plate is used for extending one end boundary of the two adjacent electric core groups, and the second extension plate is used for extending the other end boundary of the two adjacent electric core groups; the plate body is provided with mounting grooves, and the mounting grooves comprise a first mounting groove, a main mounting groove and a second mounting groove, wherein the first mounting groove is sequentially formed in the first extension plate, the main mounting groove is formed in the main body plate, and the second mounting groove is formed in the second extension plate; and

the heater strip, the heater strip is including the first heating section, main heating section and the second heating section that connect gradually, first heating section inlays to be located in the first mounting groove, main heating section inlays to be located in the main mounting groove, the second heating section inlays to be located in the second mounting groove.

Optionally, the mounting grooves are distributed on both sides of the plate body; and/or each side of the plate body is uniformly distributed with a plurality of mounting grooves.

Optionally, the temperature equalization plate further comprises a first connection assembly, wherein the first connection assembly comprises a first wiring piece and a first wire; the first wiring piece is arranged in the first mounting groove, one end of the first wiring piece is connected with the first heating section, and the other end of the first wiring piece is connected with one end of the first lead; and/or the presence of a gas in the gas,

the temperature equalization plate further comprises a second connecting assembly, and the second connecting assembly comprises a second wiring piece and a second lead; the second wiring piece is arranged in the second mounting groove, one end of the second wiring piece is connected with the second heating section, and the other end of the second wiring piece is connected with one end of the second wire.

Optionally, the mounting grooves extend along the length direction of the plate body, and a plurality of mounting grooves distributed on each side of the plate body are distributed at intervals along the width direction of the plate body;

the mounting grooves distributed on one side of the plate body and the mounting grooves distributed on the other side of the plate body are distributed in a staggered manner; the number of the heating wires is multiple, and the heating wires are arranged in the mounting grooves in a one-to-one correspondence manner; along the width direction of the plate body, all the heating wires are connected in series in sequence.

Optionally, the temperature equalization plate further comprises a wiring assembly, wherein the wiring assembly comprises a plug-in terminal and a first connecting wire and a second connecting wire connected to the plug-in terminal;

along the series connection direction, the first connecting line is connected with the first heater strip in all heater strips, and the second connecting line is connected with the tail heater strip in all heater strips.

Optionally, along the width direction of the plate body, a first avoidance gap is defined by one end of the first extension plate and the same end of the plate body; a second avoidance notch is defined by one end of the second extension plate and the same end of the plate body;

the first avoidance notch and the second avoidance notch are used for avoiding the corresponding module end plates respectively.

Optionally, the mounting groove is filled with heat-conducting glue.

Optionally, the heating power of the first heating section is greater than the heating power of the main heating section; and/or the heating power of the second heating section is larger than that of the main heating section.

The embodiment of the utility model also provides a power battery, which comprises at least two electric core groups, at least two module end plates and at least one mentioned temperature-equalizing plate;

the main body plate of the temperature-equalizing plate is arranged between two adjacent electric core groups in a matching manner, the first extension plate of the temperature-equalizing plate extends out of the boundary of one end of each of the two adjacent electric core groups, and the second extension plate of the temperature-equalizing plate extends out of the boundary of the other end of each of the two adjacent electric core groups; the at least two module end plates are arranged and fixed around the at least two electric core groups in a surrounding manner; the module end plate corresponding to the first extension plate is provided with a first avoidance hole for avoiding the first extension plate, and the first avoidance hole is in clearance fit with the first extension plate; and the module end plate corresponding to the second extension plate is provided with a second avoiding hole for avoiding the second extension plate, and the second avoiding hole is in clearance fit with the second extension plate.

The embodiment of the utility model provides a new energy automobile is still provided, it includes the above-mentioned power battery who mentions.

The utility model discloses temperature-uniforming plate, power battery and new energy automobile's beneficial effect includes, for example:

this temperature-uniforming plate includes plate body and heater strip, the plate body includes the main part board and sets up respectively the first extension board and the second extension board at main part board both ends. The main body plate is used for being matched and arranged between two adjacent electric core groups, the first extension plate is used for extending two adjacent end boundaries of the electric core groups, and the second extension plate is used for extending two adjacent other end boundaries of the electric core groups. The plate body is provided with the mounting groove, the mounting groove including set gradually first mounting groove of first extension board, set up in the main part board the main mounting groove and set up in the second mounting groove of second extension board. The heater strip is including the first heating section, main heating section and the second heating section that connect gradually, first heating section inlays to be located in the first mounting groove, main heating section inlays to be located in the main mounting groove, the second heating section inlays to be located in the second mounting groove. Through such structure setting, make the main heating section that is located on the main part board can heat the intermediate position of electric core group, the first heating section that is located on the first extension board can heat near the one end boundary of electric core group, the second heating section that is located on the second extension board can heat near the other end boundary of electric core group, because the heat dissipation of both ends boundary department of electric core group is very fast, extend the tip boundary of electric core group through first heating section and second heating section, thereby reach certain balance with the heat dissipation, be favorable to realizing the samming of electric core group, thereby improve its life.

The power battery comprises the temperature-equalizing plate and has all functions of the temperature-equalizing plate.

The new energy automobile comprises the power battery, and the new energy automobile has all functions of the power battery.

Drawings

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

Fig. 1 is an assembly view of a power battery provided in the present embodiment;

fig. 2 is an exploded view of the power battery provided in the present embodiment;

FIG. 3 is an assembly view of the vapor chamber provided in the present embodiment;

fig. 4 is an exploded view of the vapor chamber provided in this embodiment.

Icon: 1000-a power cell; 100-a temperature-equalizing plate; 10-a plate body; 11-a first extension plate; 12-a body plate; 13-a second extension plate; 14-mounting grooves; 141-a first mounting groove; 142-a main mounting groove; 143-a second mounting groove; 15-limiting plate; 16-a second lightening hole; 20-heating wires; 21-a first heating section; 22-a primary heating section; 23-a second heating section; 30-a first connection assembly; 31-a first wiring piece; 32-a first wire; 40-a second connection assembly; 41-a second wiring piece; 42-a second wire; 50-a wiring assembly; 51-card terminals; 52-first connection line; 53-second connecting line; 61-a first avoidance gap; 62-a second avoidance gap; 200-an electric core group; 300-module end plate; 310-a first avoidance hole; 320-a second avoidance hole; 330-first lightening holes.

Detailed Description

To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the attached drawings in the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are part of the embodiments of the present invention, rather than all embodiments. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that, if the directions or positional relationships indicated by the terms "up", "down", "inside", "outside", etc. appear based on the directions or positional relationships shown in the drawings, or the directions or positional relationships that the products of the present invention are usually placed when used, it is only for convenience of describing the present invention and simplifying the description, but not for indicating or implying that the indicated device or element must have a specific direction, be constructed and operated in a specific direction, and therefore, should not be construed as limiting the present invention.

Furthermore, the appearances of the terms "first," "second," and the like, if any, are only used to distinguish one description from another and are not to be construed as indicating or implying relative importance.

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

As described in the background, the power battery of a new energy vehicle generally includes a plurality of battery packs, and at present, for the new energy vehicle, in order to improve the endurance of the vehicle in winter or other low temperature environments, the power battery needs to be preheated to meet the vehicle demand in winter. In the prior art, there are some solutions, such as placing a heating device in the electric core group to achieve preheating.

However, in the prior art, due to the design defects of the heating device, the temperature difference exists between the middle position and the end position of the electric core group, and the service life of the electric core group is reduced.

In view of the above, referring to fig. 1 to fig. 4, the present embodiment provides a temperature equalizing plate 100, a power battery 1000 and a new energy vehicle (not shown), which can effectively improve the above mentioned technical problems, and can realize temperature equalization of the electric core assembly 200 and prolong the service life thereof. The new energy automobile (not shown) includes a power battery 1000, which has all the functions of the power battery 1000. Other structures of the new energy automobile can refer to the mature technology in the prior art, and therefore, the details are not described herein.

Referring to fig. 1 and 2, the front, back, left, right, top and bottom directions shown in the drawings are relative positions that can be clearly known to those skilled in the art when the power battery 1000 is placed conventionally.

Referring to fig. 1 and 2, the power battery 1000 will be described in detail.

The power battery 1000 includes at least two battery packs 200, at least two module end plates 300, and at least one of the above-mentioned thermal equalization plates 100.

Wherein, a plurality of electric core groups 200 interval are arranged, and a plurality of module end plates 300 enclose to establish and fix around a plurality of electric core groups 200, and temperature-uniforming plate 100 is the device that can generate heat, can realize preheating of electric core group 200 through generating heat. The middle position of the temperature-equalizing plate 100 is distributed between two adjacent electric core groups 200, and the heating is realized at the middle position. The front end of the temperature equalizing plate 100 extends out of one end boundary of two adjacent electric core groups 200, and meanwhile, the corresponding module end plate 300 is provided with a first avoiding hole 310 so as to avoid the first avoiding hole. The rear end of the temperature-uniforming plate 100 extends out of the other end boundary of the two adjacent electric core groups 200, and meanwhile, the corresponding module end plate 300 is provided with a second avoiding hole 320 so as to avoid the second avoiding hole.

In combination with the above structure, for two adjacent electric core packs 200, the heat dissipation effect at the end position is more significant than that at the middle position, that is, the heat dissipation effect is more significant because the end position is close to the module end plate 300, or the end position is in contact with the module end plate 300. In view of this, in this embodiment, the heat generating device extends out of the end boundary of the electric core assembly 200, so that the part of the structure can heat the electric core assembly and achieve a certain balance with heat dissipation, thereby achieving the temperature equalization of the whole electric core assembly 200.

In this embodiment, the top height of the temperature-uniforming plate 100 may be higher than the top height of the electric core assembly 200, or the two are aligned, and the bottom height of the temperature-uniforming plate 100 is higher than the bottom height of the electric core assembly 200, that is, the bottom of the temperature-uniforming plate 100 and the bottom of the electric core assembly 200 have a certain height difference. Of course, the bottom of the temperature equalizing plate 100 can be flush with the bottom of the electric core assembly 200 according to actual requirements.

Referring to fig. 3 and 4, the plate body 10 of the temperature-uniforming plate 100 includes a first extension plate 11, a main body plate 12, and a second extension plate 13, which are connected in this order. Thereby, in particular:

the main body plate 12 of the temperature-uniforming plate 100 is cooperatively arranged between two adjacent electric core groups 200, the first extension plate 11 of the temperature-uniforming plate 100 extends out of the boundary of one end of two adjacent electric core groups 200, and the second extension plate 13 of the temperature-uniforming plate 100 extends out of the boundary of the other end of two adjacent electric core groups 200; at least two module end plates 300 are arranged around and fixed on at least two electric core groups 200; a first avoidance hole 310 for avoiding the first extension plate 11 is formed in the module end plate 300 corresponding to the first extension plate 11, and the first avoidance hole 310 is in clearance fit with the first extension plate 11; the module end plate 300 corresponding to the second extension plate 13 is provided with a second avoidance hole 320 for avoiding the second extension plate 13, and the second avoidance hole 320 is in clearance fit with the second extension plate 13.

Heat loss can be further prevented by the clearance fit of the first escape hole 310 and the first extension plate 11, and the clearance fit of the second escape hole 320 and the second extension plate 13.

In a specific example, the number of the electric core groups 200 is two, and the number of the temperature-uniforming plates 100 is one. Meanwhile, the number of the module end plates 300 is four, and they are distributed in the front-rear and left-right directions. Specifically, the module end plate 300 located at the front has a first avoidance hole 310, and the module end plate 300 located at the rear has a second avoidance hole 320. For weight reduction, the module end plates 300 on the left and right sides are each provided with three first weight-reducing holes 330, respectively. One electric core pack 200 includes nine battery cells.

Of course, the specific embodiment is set according to the requirement, for example, the number of the electric core sets 200 is three or more, and the number of the temperature-uniforming plates 100 may be one, two or more. The number of the module end plates 300 may be more or less, and the number and shape of the module end plates 300 are determined mainly according to the assembled shape of the electric core pack 200 and the temperature-uniforming plate 100. Also, the number of the first lightening holes 330 may be less or more than three, and the module end plate 300 positioned at the front and rear may also be provided with lightening holes. The number of the battery cells of the single electric core group 200 can exceed nine or be lower than nine for different power batteries 1000. Accordingly, there is no limitation to the various numbers mentioned above.

The above-mentioned thermal insulation plate 100 can also be called a side heating type thermal insulation plate 100 because it mainly heats the position between two adjacent electric core sets 200, that is, mainly heats the side surfaces of the electric core sets 200.

Meanwhile, the power battery 1000 is a cuboid, and the electric core group 200, the temperature-uniforming plate 100 and the module end plate 300 are also cuboids, but it is a matter of course that the shape is other geometric structures when the specific implementation is not excluded, and the following description will be given by taking the case that the temperature-uniforming plate 100 is a cuboid as an example, so that those skilled in the art can easily understand the description.

Referring to fig. 3 and 4 in combination with fig. 1 and 2, the vapor chamber 100 includes a plate body 10 and a heater wire 20.

The plate body 10 comprises a main body plate 12, and a first extension plate 11 and a second extension plate 13 which are respectively arranged at two ends of the main body plate 12, wherein the main body plate 12 is used for being arranged between two adjacent electric core groups 200 in a matching manner, the first extension plate 11 is used for extending one end boundary of the two adjacent electric core groups 200, and the second extension plate 13 is used for extending the other end boundary of the two adjacent electric core groups 200; the plate body 10 is provided with a mounting groove 14, and the mounting groove 14 includes a first mounting groove 141 opened in the first extension plate 11, a main mounting groove 142 opened in the main body plate 12, and a second mounting groove 143 opened in the second extension plate 13 in this order.

The heating wire 20 comprises a first heating section 21, a main heating section 22 and a second heating section 23 which are sequentially connected, the first heating section 21 is embedded in the first installation groove 141, the main heating section 22 is embedded in the main installation groove 142, and the second heating section 23 is embedded in the second installation groove 143.

Through such structural setting, make the main heating section 22 that is located on main body board 12 can heat the intermediate position of electric core group 200, the first heating section 21 that is located on first extension board 11 can heat near the one end boundary of electric core group 200, the second heating section 23 that is located on second extension board 13 can heat near the other end boundary of electric core group 200, because the heat dissipation of the both ends boundary department of electric core group 200 is very fast, extend the tip boundary of electric core group 200 through first heating section 21 and second heating section 23, thereby reach certain balance with the heat dissipation core, be favorable to realizing the samming of electric core group 200, thereby improve its life.

The plate body 10 may be an extruded aluminum profile plate, and the installation groove 14 may be formed on one side wall surface of the plate body 10 when the aluminum profile is extruded. Meanwhile, the material, shape, etc. of the heater wire 20 may be set correspondingly according to the requirement. Meanwhile, the heating wire 20 may be a single wire or a multi-wire winding.

Generally, different numbers of mounting slots 14 can be designed according to the heating power requirement and the power density limit of the heating wire 20. For example, in the present embodiment, the mounting grooves 14 are distributed on both sides of the plate body 10; and/or, a plurality of mounting grooves 14 are distributed on each side of the plate body 10.

Meanwhile, in order to ensure effective heat transfer and avoid dry burning of the heating wires 20, in the present embodiment, all the mounting grooves 14 are filled with heat-conducting glue. Of course, it is not excluded that some of the mounting grooves 14 are not filled with the thermal conductive glue during the specific implementation.

In order to facilitate the installation of the heating wire 20, in the present embodiment, the temperature-uniforming plate 100 further includes a first connection member 30, and the first connection member 30 includes a first wire connection member 31 and a first wire 32; the first wire member 31 is disposed in the first mounting groove 141, one end of the first wire member 31 is connected to the first heating section 21, and the other end of the first wire member 31 is connected to one end of the first wire 32. The connection of one end of the heating wire 20 to the first wire 32 may be facilitated by the first wire connector 31, and at the same time, the electrical connection to another heating wire 20 may be achieved by the first wire 32, or the electrical connection to a power source may be achieved by the first wire 32.

Meanwhile, the vapor chamber 100 further includes a second connecting assembly 40, and the second connecting assembly 40 includes a second wiring member 41 and a second conductive line 42; the second wire member 41 is disposed in the second mounting groove 143, one end of the second wire member 41 is connected to the second heating section 23, and the other end of the second wire member 41 is connected to one end of the second conductive wire 42. The connection of the other end of the heating wire 20 to the second wire 42 can be facilitated by the second wire connection 41, while the electrical connection to the further heating wire 20 can be achieved by the second wire 42, or the electrical connection to the power supply can be achieved by the second wire 42.

By the folded back arrangement of the first wire 32 and the second wire 42, dry burning of the heating wire 20 can be avoided.

Referring to fig. 3 and 4, in the present embodiment, the mounting grooves 14 extend along the length direction of the plate body 10, and the mounting grooves 14 distributed on each side of the plate body 10 are distributed at intervals along the width direction of the plate body 10.

Wherein, the plurality of mounting grooves 14 distributed on one side of the plate body 10 and the plurality of mounting grooves 14 distributed on the other side of the plate body 10 are distributed in a staggered manner; the number of the heating wires 20 is multiple, and the heating wires 20 are arranged in the mounting grooves 14 in a one-to-one correspondence manner; all the heating wires 20 are connected in series in sequence along the width direction of the plate body 10.

By this design, it is possible to achieve energization of all the heating wires 20 with fewer wire harnesses. Meanwhile, in order to facilitate power connection, in this embodiment, the temperature-uniforming plate 100 further includes a wiring assembly 50, and the wiring assembly 50 includes a plug-in terminal 51, and a first connection line 52 and a second connection line 53 connected to the plug-in terminal 51. In the series direction, the first connecting line 52 is connected to the leading heater filament 20 of all the heater filaments 20, and the second connecting line 53 is connected to the trailing heater filament 20 of all the heater filaments 20.

The plug-in terminal 51 can be used for being connected with a main heating wire harness, so that electrification is achieved, the plug-in terminal 51 can be connected with electricity in a plug-in mode, and the plug-in terminal is convenient to install and detach.

Referring to fig. 2, since the first extension plate 11 and the second extension plate 13 are both protruded with respect to the end of the electric core pack 200, the module end plate 300 may interfere therewith. To solve this problem, referring to fig. 4, in the present embodiment, along the width direction of the plate body 10, one end of the first extension plate 11 and the same end of the plate body 10 define a first avoidance gap 61; one end of the second extension plate 13 defines a second relief notch 62 with the same end of the plate body 10. The first avoidance notch 61 and the second avoidance notch 62 are used for respectively avoiding the corresponding module end plate 300. Through setting up first dodge breach 61 and second dodge breach 62, can make things convenient for the assembly of electric core group 200, samming board 100 and module end plate 300.

Meanwhile, the extension lengths of the first extension plate 11 and the second extension plate 13 may be set according to actual conditions, and since the first avoidance hole 310 and the second avoidance hole 320 are provided, the overall installation is not affected by properly increasing the lengths.

Referring to fig. 3 and 4, in order to facilitate installation of the temperature equalizing plate 100, the plate body 10 further includes a limiting plate 15, the limiting plate 15 is disposed on top of the main body plate 12 and extends along a length direction of the main body plate 12, and has a thickness greater than that of the main body plate 12, such that when the main body plate 12 is disposed between two adjacent electric core groups 200, the limiting plate 15 simultaneously abuts against top walls of two adjacent electric core groups 200, thereby allowing the first extending plate 11, the main body plate 12 and the second extending plate 13 to be hung between two adjacent electric core groups 200.

Meanwhile, for reducing the weight, the plate body 10 is provided with a plurality of second lightening holes 16, the second lightening holes 16 penetrate through the plate body 10 along the length direction of the plate body 10, and the second lightening holes 16 can be formed in the plate body 10 when profile extrusion is carried out, for example. Specifically, after penetrating through one end of the first extension plate 11, a part of the second lightening hole 16 penetrates through the first extension plate 11, the main plate body 10 and the second extension plate 13 in sequence, and penetrates through an end of the second extension plate 13. A part of the second lightening holes 16 penetrate in the direction from one end to the other end of the limiting plate 15.

In some situations, the heat dissipation of the end of the electric core assembly 200 is too large, and in order to increase the heat supply of the end, the heating power at the two ends of the heating wire 20 can be increased, for example, such that: the heating power of the first heating section 21 is larger than that of the main heating section 22; and/or the heating power of the second heating section 23 is larger than that of the main heating section 22.

By the formula: p = I2R, it is found that the power P increases as the current I is equal and the resistance R increases in the series circuit. Therefore, it is sufficient that the resistances of the first heating section 21 and the second heating section 23 are greater than the resistance of the main heating section 22.

In the present embodiment, the first and second wire members 31 and 41 are zero-power segments, i.e., resistance is zero, but it is understood that in some embodiments, for example, high-resistance materials are substituted for the first and second wire members 31 and 41 mentioned above, and high-power ends can be realized.

According to the temperature equalization plate 100 provided by the embodiment, the operation principle of the temperature equalization plate 100 is as follows:

the optimum working temperature range of the power battery 1000, such as a lithium battery, is between 20 and 35 ℃, and the temperature difference is usually controlled within 5 ℃ to maintain the cycle life. The contact area between the end part of the electric core set 200 and the module end plate 300 is larger, and the heat dissipation amount of the end part of the electric core set 200 is larger than that of the middle position, so that the heat dissipation difference of different positions of the electric core set 200 is caused, and the temperature difference is formed. To solve this problem, in this embodiment, the temperature-equalizing plate 100 is disposed between two adjacent electric core assemblies 200, and the temperature-equalizing plate 100 is a device capable of generating heat, wherein the middle position is used for heating the middle position of the electric core assemblies 200, and the two ends of the temperature-equalizing plate extend out of the end boundaries of the electric core assemblies 200, so as to heat the electric core assemblies, and achieve a certain balance with the heat dissipation, so as to equalize the temperature difference and prolong the cycle life.

To sum up, the embodiment of the utility model provides a temperature-uniforming plate 100, power battery 1000 and new energy automobile, this temperature-uniforming plate 100 include plate body 10 and heater strip 20, and plate body 10 includes main part board 12 and sets up respectively at the first extension board 11 and the second extension board 13 at main part board 12 both ends. The main body plate 12 is adapted to be disposed between two adjacent electric core groups 200, the first extension plate 11 is adapted to extend from one end boundary of the two adjacent electric core groups 200, and the second extension plate 13 is adapted to extend from the other end boundary of the two adjacent electric core groups 200. The plate body 10 is provided with a mounting groove 14, and the mounting groove 14 includes a first mounting groove 141 opened in the first extension plate 11, a main mounting groove 142 opened in the main body plate 12, and a second mounting groove 143 opened in the second extension plate 13 in this order. The heating wire 20 comprises a first heating section 21, a main heating section 22 and a second heating section 23 which are sequentially connected, the first heating section 21 is embedded in the first installation groove 141, the main heating section 22 is embedded in the main installation groove 142, and the second heating section 23 is embedded in the second installation groove 143. Through such structural setting, make the main heating section 22 that is located on main body board 12 can heat the intermediate position of electric core group 200, the first heating section 21 that is located on first extension board 11 can heat near the one end boundary of electric core group 200, the second heating section 23 that is located on second extension board 13 can heat near the other end boundary of electric core group 200, because the heat dissipation of the both ends boundary department of electric core group 200 is very fast, extend the tip boundary of electric core group 200 through first heating section 21 and second heating section 23, thereby reach certain balance with the heat dissipation core, be favorable to realizing the samming of electric core group 200, thereby improve its life.

The power battery 1000 includes the temperature-uniforming plate 100, which has all functions of the temperature-uniforming plate 100.

The new energy automobile comprises the power battery 1000, and the new energy automobile has all functions of the power battery 1000.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. A vapor chamber, comprising:

the plate body comprises a main body plate, and a first extension plate and a second extension plate which are respectively arranged at two ends of the main body plate, wherein the main body plate is arranged between two adjacent electric core groups in a matched manner, the first extension plate is used for extending one end boundary of the two adjacent electric core groups, and the second extension plate is used for extending the other end boundary of the two adjacent electric core groups; the plate body is provided with mounting grooves, and the mounting grooves comprise a first mounting groove, a main mounting groove and a second mounting groove, wherein the first mounting groove is sequentially formed in the first extension plate, the main mounting groove is formed in the main body plate, and the second mounting groove is formed in the second extension plate; and

the heater strip, the heater strip is including the first heating section, main heating section and the second heating section that connect gradually, the first heating section inlays to be located in the first mounting groove, the main heating section inlays to be located in the main mounting groove, the second heating section inlays to be located in the second mounting groove.

2. The temperature-equalizing plate of claim 1, wherein the mounting grooves are distributed on both sides of the plate body; and/or each side of the plate body is uniformly distributed with a plurality of mounting grooves.

3. The temperature equalization plate of claim 2, further comprising a first connection assembly, the first connection assembly comprising a first wire connection piece and a first wire; the first wiring piece is arranged in the first mounting groove, one end of the first wiring piece is connected with the first heating section, and the other end of the first wiring piece is connected with one end of the first lead; and/or the presence of a gas in the gas,

the temperature equalizing plate further comprises a second connecting assembly, and the second connecting assembly comprises a second wiring piece and a second lead; the second wiring piece is arranged in the second mounting groove, one end of the second wiring piece is connected with the second heating section, and the other end of the second wiring piece is connected with one end of the second wire.

4. The temperature-uniforming plate according to claim 2, wherein the mounting grooves extend along a length direction of the plate body, and a plurality of mounting grooves distributed on each side of the plate body are distributed at intervals along a width direction of the plate body;

the mounting grooves distributed on one side of the plate body and the mounting grooves distributed on the other side of the plate body are distributed in a staggered manner; the heating wires are arranged in the mounting grooves in a one-to-one correspondence manner; along the width direction of the plate body, all the heating wires are connected in series in sequence.

5. The temperature equalization plate of claim 4, further comprising a wiring assembly comprising a plug-in terminal and first and second connection lines connected to the plug-in terminal;

along the series connection direction, the first connecting line is connected with the first heater strip in all heater strips, and the second connecting line is connected with the tail heater strip in all heater strips.

6. The temperature equalization plate of any one of claims 1-5, wherein one end of the first extension plate and the same end of the plate body define a first relief notch along the width of the plate body; a second avoidance notch is defined by one end of the second extension plate and the same end of the plate body;

the first avoidance notch and the second avoidance notch are used for avoiding the corresponding module end plates respectively.

7. The temperature-equalizing plate of any one of claims 1 to 5, wherein the mounting grooves are filled with a thermally conductive adhesive.

8. The temperature-equalizing plate of any one of claims 1-5, wherein the heating power of the first heating section is greater than the heating power of the main heating section; and/or the heating power of the second heating section is larger than that of the main heating section.

9. A power battery, comprising at least two battery packs, at least two module end plates and at least one temperature-equalizing plate according to any one of claims 1 to 8;

the main body plate of the temperature-equalizing plate is arranged between two adjacent electric core groups in a matching manner, the first extension plate of the temperature-equalizing plate extends out of the boundary of one end of each of the two adjacent electric core groups, and the second extension plate of the temperature-equalizing plate extends out of the boundary of the other end of each of the two adjacent electric core groups; the at least two module end plates are arranged and fixed around the at least two electric core groups in a surrounding manner; the module end plate corresponding to the first extension plate is provided with a first avoidance hole for avoiding the first extension plate, and the first avoidance hole is in clearance fit with the first extension plate; and the module end plate corresponding to the second extension plate is provided with a second avoiding hole for avoiding the second extension plate, and the second avoiding hole is in clearance fit with the second extension plate.

10. A new energy automobile, characterized by comprising the power battery of claim 9.

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