CN218448107U - Battery device - Google Patents

Abstract

The disclosure relates to the technical field of batteries, in particular to a battery device, which comprises a battery box, a battery pack, a heat exchange plate and a heat exchange medium pipe, wherein the battery box is provided with a frame, and an accommodating space is formed in the frame; the battery pack is arranged in the accommodating space; the heat exchange plate is arranged in the accommodating space, and a medium flow passage is arranged in the heat exchange plate; the heat exchange medium pipe is communicated with a medium flow passage in the heat exchange plate; and a pipeline groove is formed in one surface of the frame opposite to the battery pack, and the heat exchange medium pipe is arranged in the pipeline groove. Through set up the pipe chase on the frame, install the heat transfer medium pipe in the pipe chase, can practice thrift the inside space of battery device to promote battery device's energy density, and the heat transfer medium pipe is installed simple to operate in the pipe chase on the one side that frame and group battery are relative, is favorable to promoting production efficiency.

Description

Battery device

Technical Field

The present disclosure relates to the field of battery technologies, and particularly, to a battery device.

Background

With the development and progress of technology, electric vehicles are increasingly used. In an electric vehicle, a battery device, such as a battery pack, is provided for storing electric energy and supplying energy to the electric vehicle. At present, the battery device has the problem of low energy density.

It is to be noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the present disclosure, and thus may include information that does not constitute prior art known to those of ordinary skill in the art.

Disclosure of Invention

It is an object of the present disclosure to provide a battery device, thereby increasing the energy density of the battery device at least to some extent.

The present disclosure provides a battery device, including:

the battery box is provided with a frame, and an accommodating space is formed in the frame;

the battery pack is arranged in the accommodating space;

the heat exchange plate is arranged in the accommodating space, and a medium flow passage is arranged in the heat exchange plate;

the heat exchange medium pipe is communicated with a medium flow passage in the heat exchange plate;

and one surface of the frame opposite to the battery is provided with a pipeline groove, and the heat exchange medium pipe is arranged in the pipeline groove.

The battery device that this disclosed embodiment provided, through set up the pipe groove on the frame, install the heat transfer medium pipe in the pipe groove, can practice thrift the inside space of battery device to promote battery device's energy density, and the heat transfer medium pipe is installed and is installed convenient to operate in the pipe groove on frame and the relative one side of group battery, be favorable to promoting production efficiency.

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 disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure. It is to be understood that the drawings in the following description are merely exemplary of the disclosure, and that other drawings may be derived from those drawings by one of ordinary skill in the art without the exercise of inventive faculty.

Fig. 1 is a schematic diagram of a battery device provided in an exemplary embodiment of the present disclosure;

FIG. 2 is a partial cross-sectional view of a carrier plate provided in an exemplary embodiment of the present disclosure;

FIG. 3 is a schematic view of an insulation barrier provided by an exemplary embodiment of the present disclosure;

fig. 4 is a schematic view of a heat exchange plate provided in an exemplary embodiment of the present disclosure;

fig. 5 is a schematic diagram of a battery device provided in an exemplary embodiment of the present disclosure;

FIG. 6 is a schematic view of a connector provided in an exemplary embodiment of the present disclosure;

fig. 7 is a schematic view of another heat exchange plate provided in an exemplary embodiment of the present disclosure;

fig. 8 is a schematic view of a battery box provided in an exemplary embodiment of the present disclosure;

fig. 9 is a schematic view of another battery device provided in an exemplary embodiment of the present disclosure;

fig. 10 is a partial cross-sectional view of a battery device provided in an exemplary embodiment of the present disclosure;

fig. 11 is a flowchart of a method for manufacturing a battery device according to an exemplary embodiment of the present disclosure.

Detailed Description

The technical solutions in the exemplary embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the exemplary embodiments of the present disclosure. The example embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the present disclosure, and it is, therefore, to be understood that various modifications and changes may be made to the example embodiments without departing from the scope of the present disclosure.

In the description of the present disclosure, unless explicitly specified or limited otherwise, the terms "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more; the term "and/or" includes any and all combinations of one or more of the associated listed items. In particular, reference to "the" object or "an" object is also intended to mean one of many such objects possible.

The terms "connected," "secured," and the like are to be construed broadly and encompass, for example, a fixed connection, a removable connection, an integral connection, an electrical connection, or a signal connection; "connected" may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present disclosure can be understood by those skilled in the art as the case may be.

Further, in the description of the present disclosure, it is to be understood that the directional words "upper", "lower", "inner", "outer", etc., which are described in the exemplary embodiments of the present disclosure, are described at the angles shown in the drawings, and should not be construed as limiting the exemplary embodiments of the present disclosure. It will also be understood that, in this context, when an element or feature is referred to as being "on", "under", or "inner", "outer" with respect to another element(s), it can be directly on "," under ", or" inner "," outer "with respect to the other element(s), or indirectly on", "under", or "inner", "outer" with respect to the other element(s) via intervening elements.

An exemplary embodiment of the present disclosure provides a battery device, as shown in fig. 1, including: the battery box 10, the battery pack 30, the heat exchange plate 20 and the heat exchange medium pipe 70, wherein the battery box 10 is provided with a frame 11, and an accommodating space is formed in the frame 11; the battery pack 30 is arranged in the accommodating space; the heat exchange plate 20 is arranged in the accommodating space, and a medium flow passage 211 is arranged in the heat exchange plate 20; the heat exchange medium pipe 70 is communicated with the medium flow passage 211 in the heat exchange plate 20; wherein, the side of the frame 11 opposite to the battery pack 30 is provided with a pipe groove 113, and the heat exchange medium pipe 70 is provided in the pipe groove 113.

The battery device provided by the embodiment of the disclosure can save the space inside the battery device by arranging the pipeline groove 113 on the frame 11 and installing the heat exchange medium pipe 70 in the pipeline groove 113, thereby improving the energy density of the battery device, and the heat exchange medium pipe 70 is conveniently installed in the pipeline groove 113 on the opposite surface of the frame 11 and the battery pack 30, which is beneficial to improving the production efficiency.

Further, the battery device provided by the embodiment of the present disclosure may further include a heat insulating member 20, a connector 50, and a buffer insulating layer 60, the spacer 20 being disposed between the frame 11 and the heat exchange plate 20, the connector 50 being disposed at an end of the heat exchange plate 20, the connector 50 being for connecting the heat exchange plate 20 and the frame 11 of the battery case 10. The buffer insulating layer 60 is provided between the stack 30 and the loading plate 12 of the battery case 10, and the buffer insulating layer 60 serves to isolate heat exchange between the bottoms of the stack 30 and the heat exchange plates 20 and the outside and to buffer the impact of the loading plate 12.

The following will explain each part of the battery device provided by the embodiment of the present disclosure in detail:

the battery case 10 includes a loading plate 12 and a frame 11, the frame 11 is coupled to the loading plate 12 to form an accommodating space, and the heat exchange plate 20, the battery pack 30, the heat insulating member 40, the connector 50, and the buffer insulating layer 60 are disposed in the accommodating space. The bearing plate 12 is used for protecting the bottom of the battery device, so that external foreign matters are prevented from striking or rubbing the internal devices of the battery device when the battery device is used, and the bearing plate 12 is also used for sealing the bottom of the battery, so that external impurities such as water vapor and dust are prevented from entering the battery device.

As shown in fig. 2, the bearing plate 12 includes an upper plate 121 and a lower plate 122 disposed opposite to each other, so as to form a cavity between the upper plate 121 and the lower plate 122, and the cavity can be used for energy absorption, i.e. the bearing plate 12 has a hollow structure. The frame 11 is arranged on one side of the upper plate body 121 far away from the lower plate body 122, the upper plate body 121 is provided with a connecting area, the connecting area is used for connecting the frame 11, and the lower plate body 122 is provided with an auxiliary mounting hole 123 at a position opposite to the connecting area. A sealing plug 124 is arranged at the auxiliary mounting hole 123, and the sealing plug 124 is used for sealing the auxiliary mounting hole 123.

The auxiliary holes 123 are used to expose the connection area on the upper plate 121, so as to facilitate the connection between the upper plate 121 and the frame 11. After the upper plate body 121 and the frame 11 are connected, the sealing plug 124 is connected to the auxiliary mounting hole 123, so that the cavity in the bearing plate 12 is sealed, and external impurities are prevented from entering the inside of the bearing plate 12.

In a possible embodiment of the present disclosure, the frame 11 and the loading plate 12 may be connected by a fixing member, and the fixing member is inserted into the connection region and connects the frame 11 and the upper plate 121. For example, the fixing member may be a bolt, the connection region is provided with a connection hole, the frame 11 is provided with a threaded hole, and the bolt is inserted into the connection hole and is matched with the threaded hole in the frame 11. Or the fixing element may also be a rivet or a pin, etc., and the embodiments of the present disclosure are not limited thereto.

At least one circle of connecting holes may be disposed on the upper plate body 121, and the at least one circle of connecting holes is located in a projection area of the frame 11 on the bearing plate 12. Correspondingly, at least one circle of threaded holes are formed in the bottom surface of the frame 11, and the connecting holes correspond to the threaded holes one to one. When connecting the upper plate 121 and the frame 11, the bolts pass through the auxiliary holes 123 of the lower plate 122.

In another possible embodiment of the present disclosure, the frame 11 and the loading plate 12 may be connected by welding. The connecting area is a welding part and is welded on the frame 11. A plurality of connecting areas may be provided on the upper board body 121, for example, at least one circle of connecting areas may be provided on the upper board body 121, and each connecting area is welded to a corresponding area on the side frame 11. The auxiliary mounting hole 123 of the lower plate 122 exposes the connection area for welding. After the welding is completed, the auxiliary fitting hole 123 is closed with a closing plug 124.

The closing plug 124 is clamped with the lower plate 122, and the closing plug 124 comprises: the plugging device comprises a plugging body 202 and a clamping body 201, wherein the plugging body 202 penetrates through an auxiliary mounting hole 123; the clamping body 201 is disposed at one end of the blocking body 202 close to the upper plate 121, the clamping body 201 penetrates the auxiliary mounting hole 123, and the clamping body 201 is clamped on one surface of the lower plate 122 close to the upper plate 121.

The size of the clamping body 201 is larger than that of the auxiliary mounting hole 123, so that the clamping body 201 can be clamped on one surface of the lower plate 122 close to the upper plate 121. For example, the card body 201 may have a first state and a second state, and the size of the card body 201 is larger than the size of the auxiliary installation hole 123 when the card body 201 is in the first state. When the clamping body 201 is in the second state, the clamping body 201 is compressed, and at this time, the size of the clamping body 201 is smaller than that of the auxiliary mounting hole 123, and the clamping body 201 can enter the auxiliary mounting hole 123. For example, the card body 201 may have elasticity.

The area of the auxiliary fitting hole 123 at a first cross section is smaller than the area of the auxiliary fitting hole 123 at a second cross section, the first cross section and the second cross section are parallel, and the first cross section and a face of the lower plate body 122 facing the upper plate body 121 are parallel, the first cross section is located on a side of the second cross section close to the upper plate body 121. For example, the auxiliary mounting hole may be a conical hole, or the auxiliary mounting hole may be a stepped hole.

The area of the occluding body 202 at a first cross section, which is parallel to the second cross section and is located on the side of the second cross section close to the upper plate body 121, is smaller than the area of the occluding body 202 at a second cross section, which is parallel to a face of the lower plate body 122 facing the upper plate body 121. For example, the occluding body 202 may have a conical configuration or the occluding body 202 may have a stepped axis configuration.

Wherein, the structure of the blocking body 202 matches with the structure of the auxiliary installing hole 123, and when the structure of the auxiliary installing hole 123 is a cone structure, the structure of the blocking body 202 is also a cone structure. When the auxiliary hole 123 is a stepped hole, the blocking body 202 has a stepped shaft structure.

In this disclosed embodiment, through setting up the shutoff body 202 to the big little structure in upper end of lower extreme to assisting dress hole 123 to also set up to the big little structure in upper end of lower extreme, can realize assisting dress hole 123 and shutoff body 202 spacing each other, avoid in the use because the problem that the shutoff stopper 124 that external force factors such as vibration lead to probably drops, improved the connection stability of shutoff stopper 124.

It will be appreciated that in the disclosed embodiment, the closure plug 124 is a sealing glue that is attached to the auxiliary mounting aperture 123. Or the sealing plug 124 may include a sealing body 202 and a sealing adhesive layer, the sealing adhesive layer may be disposed on the inner wall of the auxiliary mounting hole 123, and the sealing body 202 is adhered to the auxiliary mounting hole 123 through the sealing adhesive layer to seal the auxiliary mounting hole 123. For example, the blocking glue may be a glass glue.

The lower end of the closing plug 124 is flush with the lower surface of the lower plate body 122, or the distance between the lower end of the closing plug 124 and the upper plate body 121 is smaller than the distance between the lower surface of the lower plate body 122 and the upper plate body 121, the lower end of the closing plug 124 is the end of the closing plug 124 far away from the upper plate body 121, and the lower surface of the lower plate body 122 is the surface of the lower plate body 122 far away from the upper plate body 121.

The lower end of the sealing plug 124 does not protrude from the surface of the lower plate 122 away from the upper plate 121, so that the sealing plug 124 is prevented from occupying the space in the height direction of the battery device, the compactness of the structure of the battery device is improved, and the safety of the battery device can also be improved.

The carrier plate 12 provided by the embodiment of the present disclosure may be a bottom protection plate for protecting the bottom of the battery device. At this time, the weight of the components in the battery device may not be applied to the carrier plate 12, and the components such as the battery pack 30 and the heat exchange plate 20 are attached to the frame 11, and the components are carried by the frame 11.

In practice, the carrier plate 12 can also be used to carry at least some of the components of the battery device. In this case, the supporting plate 12 may be a solid supporting plate 12, and the structures of the battery pack 30 and the heat exchange plate 20 may be connected to the supporting plate 12 by means of adhesion, etc., which is not limited in the embodiment of the present disclosure.

The frame 11 may include an end frame 111 and a side frame 112, and the end frame 111 and the side frame 112 are connected to form the frame 11. By way of example, the border 11 may be a rectangular or approximately rectangular border 11. At this time, the bezel 11 may include two oppositely disposed end frames 111 and two oppositely disposed side frames 112, the side frames 112 and the end frames 111 are vertically disposed, and both ends of each end frame 111 are respectively connected to one side frame 112. For example, the end frame 111 and the side frame 112 may be connected by welding or bolting. The bottom of the end frame 111 and the side frame 112 can be connected to the carrier plate 12.

A plurality of heat exchange plates 20 may be provided in the battery device, and the plurality of heat exchange plates 20 are sequentially arranged in a direction along the length of the side frame 112. A cell stack 30 is disposed between the adjacent heat exchange plates 20, and a plurality of cells are disposed in the cell stack 30 in a stacked arrangement with a stacking direction of the plurality of cells along a length direction of the end frame 111. I.e., the stacking direction of the cells is perpendicular to the arrangement direction of the heat exchange plates 20.

Wherein the first surfaces of the cells at the ends in the cell stacking direction are opposed to the duct grooves 113, and the first surfaces of the cells are perpendicular to the cell stacking direction. For example, the battery may include two oppositely disposed first surfaces and a second surface disposed between the two first surfaces, the first surfaces having an area greater than the area of the second surface. That is, the first surface is the large surface of the battery, which faces the pipe groove 113. The pipe groove 113 can provide an expansion space for the large face of the battery by arranging the large face of the battery and the pipe groove 113 to face each other.

The heat insulating member 40 is provided between the end frame 111 and the heat exchange plate 20, and the heat insulating member 40 serves to insulate between the heat exchange plate 20 and the end frame 111, thereby reducing heat exchange between the heat exchange plate 20 and the end frame 111, improving heat dissipation capability of the heat exchange plate 20 to the battery pack 30, and preventing a problem of non-uniform temperature inside the battery device due to the influence of the end frame 111.

As shown in fig. 3, the heat insulator 40 is provided with an escape groove 41 to form a depression at least on a surface of the heat insulator 40 facing the heat exchange plate 20. The recessed portion can form an air gap between the end frame 111 and the heat exchange plate 20, thereby reducing the amount of heat exchange between the end frame 111 and the heat exchange plate 20 and reducing the weight of the battery device.

The recess formed by the avoiding groove 41 penetrates the heat insulating material 40 in a first direction (longitudinal direction of the side frame 112) perpendicular to the surface of the end frame 111 facing the heat insulating material 40. That is, the escape groove 41 is a through hole penetrating the heat insulator 40. Certainly, in practical applications, the avoiding groove 41 may not penetrate through the heat insulation member 40, for example, the avoiding groove 41 is a blind hole or a groove 511 on the heat insulation member 40, which is not specifically limited in the embodiment of the present disclosure.

The heat insulation member 40 is provided with n avoidance grooves 41, the n avoidance grooves 41 are arranged along the length direction of the end frame 111 at one time, and n is a positive integer greater than or equal to 1. The height of the escape groove 41 is h1, the height of the heat insulator 40 is h2, the height of the heat insulator 40 is the dimension of the heat insulator 40 in the second direction, the height of the escape groove 41 is the dimension of the escape groove 41 in the second direction, and the second direction is the direction perpendicular to the bottom surface of the battery case 10. The total width of the escape groove 41 is W1 (sum of W1 i), the width of the heat shield 40 is W2, the total width of the escape groove 41 is the sum of the widths of the n escape grooves 41, the width of the heat shield 40 is the dimension of the heat shield 40 in the third direction, the width of the escape groove 41 is the dimension of the escape groove 41 in the third direction, and the third direction is the longitudinal direction of the end frame 111.

Wherein h1/h2 is less than or equal to 2/3, and/or W1/W2 is less than or equal to 2/3. For example, h1/h2=1/3, h1/h2=1/2 or h1/h2= 2/3. W1/W2=1/3, W1/W2=1/2, or W1/W2=2/3.

In the embodiment of the present disclosure, the height of the avoiding groove 41 is less than two thirds of the height of the heat insulation element 40, and the total width of the avoiding groove 41 is less than two thirds of the width of the heat insulation element 40, so that the strength of the heat insulation element 40 is ensured, the heat insulation element 40 is prevented from being crushed in the using process, and the stability of the battery device is further improved.

The height of the avoiding groove 41 is smaller than that of the battery, the height of the battery is the size of the battery in the second direction, the height of the avoiding groove 41 is the size of the avoiding groove 41 in the second direction, and the second direction is the direction perpendicular to the bottom surface of the battery box 10. And/or the width of the avoiding groove 41 is greater than the width of the battery, the width of the battery is the dimension of the battery along the third direction, the width of the avoiding groove 41 is the dimension of the avoiding groove 41 along the third direction, and the third direction is the length direction of the end frame 111.

The height of the groove 41 is less than the height of the battery, so that the heat insulation piece 40 can provide supporting force at the upper end and the lower end of the battery, the problem that the heat exchange plate 20 is deformed due to the fact that the heat insulation piece 40 is lost is avoided, the heat exchange plate 20 is ensured to be in close contact with the battery pack 30, and the heat dissipation capacity is improved. The width of the avoiding groove 41 is larger than that of the battery, and the heat dissipation capacity of the battery device can be improved.

There is a first predetermined distance between the top wall of the avoidance groove 41 and the top surface of the thermal insulation member 40 and a second predetermined distance between the bottom wall of the avoidance groove 41 and the bottom surface of the thermal insulation member 40. That is, the top wall of the escape groove 41 is lower than the top surface of the heat insulator 40, the bottom wall of the escape groove 41 is higher than the bottom surface of the heat insulator 40, and the escape groove 41 does not penetrate through the heat insulator 40 in the second direction. Wherein, the first preset distance and the second preset distance can be the same or different.

The top wall of the avoiding groove 41 is lower than the top surface of the heat insulating member 40, and the bottom wall of the avoiding groove 41 is higher than the bottom surface of the heat insulating member 40, so that the parts of the heat exchange plate 20 close to the bottom surface and the top surface are provided with supporting structures, the deformation of the heat exchange plate 20 due to stress is avoided, the heat exchange plate 20 and the battery pack 30 can be ensured to be in close contact with each other, and the heat dissipation performance is ensured.

A glue layer is arranged between the end frame 111 and the heat insulation piece 40; and/or a glue layer is disposed between the battery pack 30 and the thermal insulation member 40. That is, the end frame 111 and the heat insulator 40 are coupled by means of adhesive, and the heat exchange plate 20 and the heat insulator 40 are coupled by means of adhesive.

When the heat insulating member 40 is coupled to the end bell 111 and the heat exchange plate 20 by the coupling paste, the coupling paste overflows due to the flow of the heat insulating member 40 by the compression. In the embodiment of the present disclosure, the heat insulation member 40 is provided with an avoiding groove 41, and the glue layer is at least partially located in the avoiding groove 41. I.e. the avoidance groove 41 can be used to accommodate the overflowing connection glue, thereby avoiding the connection glue from contaminating other components in the battery device.

In the disclosed embodiment, in order to reduce the heat exchange between the heat exchange plate 20 and the end frame 111, the heat insulating member 40 may be made of a heat insulating material, for example, the material of the heat insulating member 40 may be glass fiber, asbestos, rock wool, silicate, aerogel blanket, or vacuum plate.

The heat exchange plate 20 is provided in the receiving space of the battery case 10, and the heat exchange plate 20 may be provided at a side of the battery pack. Of course, in practical applications, the heat exchange plate 20 may also be disposed at the bottom (the side of the battery pack close to the base plate) or the top (the side of the battery pack far from the base plate) of the battery pack 30, which is not particularly limited in the embodiment of the present disclosure.

As shown in fig. 4, the heat exchange plate 20 includes a heat exchange body 21 and a support flange 22, the heat exchange body 21 is disposed at a side portion of the battery pack 30, the support flange 22 is disposed at the heat exchange body 21, and the support flange 22 extends toward a side of the heat exchange body 21 adjacent to the battery pack 30, and the support flange 22 is used for supporting the battery pack 30.

The heat exchanging body 21 is provided therein with a medium flow passage 211, and the medium flow passage 211 is used for conveying the cooling liquid. For example, a plurality of medium flow channels 211 may be provided in parallel with each other in the heat exchange plate 20. The medium flow passage 211 may have a liquid inlet and a liquid outlet, which may be provided at the ends of the heat exchange plate 20. The inlet and outlet may be located at the same end of the heat exchange plate 20, or the inlet and outlet may be located at both ends of the heat exchange plate 20, respectively.

The supporting flange 22 is provided at the bottom edge of the heat exchanging body 21, and the supporting flange 22 extends toward the side of the heat exchanging body 21 close to the battery. The support rim 22 may be arranged perpendicular to the cell-facing surface of the heat exchanger body 21. The stack 30 is placed on the support flange 22, the heat exchange plates 20 are disposed on both sides of the stack 30, the heat exchange plates 20 on both sides of the stack 30 have the support flange 22 extending toward the stack 30, and the support of the stack 30 is achieved by the support flange 22 on both sides of the stack 30.

The battery device provided by the embodiment of the present disclosure includes a plurality of heat exchange plates 20, the plurality of heat exchange plates 20 are sequentially arranged to form a heat exchange plate string, the heat exchange plate 20 positioned at an end of the heat exchange plate string is a first heat exchange plate, a battery pack 30 is disposed on only one side of the first heat exchange plate, so that a support flange 22 is disposed on the first heat exchange plate, a side of the first heat exchange plate away from the battery is opposite to an end frame 111, and a heat insulating member 40 is disposed between the end frame 111 and the first heat exchange plate. The heat exchanger plates 20 located between two first heat exchanger plates in the heat exchanger plate train are second heat exchanger plates which are provided with batteries on both sides, whereby the second heat exchanger plates are provided with support beads 22 on both sides.

The battery pack 30 comprises a plurality of batteries, and the arrangement direction of the batteries is parallel to the heat exchange plate 20, so that each battery in the battery pack 30 is in contact with the heat exchange plate 20, the heat exchange plate 20 can dissipate heat of each battery, and the uniformity of temperature in the battery pack 30 is improved. In order to improve the heat exchange efficiency between the heat exchange plate 20 and the battery, a heat conductive adhesive layer may be disposed between the stack 30 and the heat exchange plate 20.

As shown in fig. 5, a buffer insulation layer 60 is provided between the heat exchange plate 20 and the supporting plate 12 of the battery case 10, the buffer insulation layer 60 having a shock-absorbing region and a heat-insulating region, the shock-absorbing region being opposite to the heat exchange plate 20, and a shock-absorbing plate 61 provided in the shock-absorbing region, the shock-absorbing plate 61 for buffering the impact of the supporting plate 12 on the heat exchange plate 20 and the battery pack 30. The heat preservation district does not have the overlap region with the damping region, and heat preservation district and group battery 30 are relative, and the heat preservation district is provided with heat preservation portion 62, and heat preservation portion 62 is used for keeping warm to group battery 30.

The orthographic projection of the support flange 22 on the buffer insulation layer 60 covers the shock absorption region, and the orthographic projection of the support flange 22 on the buffer insulation layer 60 and the insulation region do not have an overlapping region. That is, the area of the shock absorbing plate 61 is not larger than the area of the support flange 22, and the heat insulating portion 62 and the support flange 22 do not have an overlapping region.

The shock absorbing plate 61 is attached to the bottom surface of the support flange 22. For example, the shock absorbing plate 61 may be adhered to the bottom surface of the support flange 22. In the use of the battery device, for example, when the battery device is applied to an electric vehicle, the loading plate 12 may move due to vibration or impact during the use, so that the loading plate 12 may collide against the battery pack 30, and the impact of the loading plate 12 against the battery pack 30 can be alleviated by providing the shock-absorbing plate 61 on the side of the heat exchange plate 20 facing the loading plate 12, thereby improving the safety of the battery device.

The heat insulating part 62 is attached to the bottom surface of the battery pack 30, for example, the heat insulating part 62 is bonded to the bottom surface of the battery pack 30. The heat exchange between the bottom of the battery pack 30 and the carrier plate 12 and the outside is reduced by the heat insulating portion 62, and the uniformity of the temperature inside the battery device can be improved.

When the heat exchange plate 20 has the support beads 22 at both sides thereof, a shock-absorbing plate 61 is provided at the bottom surface of each support bead 22, and two shock-absorbing plates 61 corresponding to the same heat exchange plate 20 may be of an integral structure. Of course, in practical applications, the two damping plates 61 corresponding to the same heat exchanging plate 20 may also be of a split structure, and the embodiment of the present disclosure is not limited thereto.

In the disclosed embodiment, the heat insulating portion 62 and the shock absorbing plate 61 are of a split structure. The bottom surface of shock attenuation board 61 can be less than the bottom surface of heat preservation portion 62, has so guaranteed that loading board 12 at first contacts shock attenuation board 61 when warping or moving, dissolves the impact of loading board 12 through shock attenuation board 61 to heat preservation portion 62 and shock attenuation board 61 can avoid the impact of loading board 12 to transmit to group battery 30 through shock attenuation board 61 and heat preservation portion 62 for split type structure, promote battery device's security.

The damping plate 61 is a supporting foam plate having a tensile strength of 200Kpa or more at a compression of 10%. The heat preservation part 62 is a heat preservation foam board, and the hardness of the support foam board is different from that of the heat preservation foam board. For example, the stiffness of the support foam board is greater than the stiffness of the insulating foam board.

The length of the supporting flange 22 is a, the length of the damping plate 61 is c, the length of the supporting flange 22 is the distance from one end of the supporting flange 22, which is far away from the heat exchange body 21, to the heat exchange body 21, and the length of the damping plate 61 is the distance from one end of the damping plate 61, which is far away from the heat exchange body 21, to the heat exchange body 21; where 0.5a ≦ c ≦ a, such as c =0.5a, c =0.6a, c =0.7a, c =0.8a, or c = a.

The length of the supporting flange 22 is a, the length of the battery in the battery pack 30 is b, the length of the supporting flange 22 is the distance from one end of the supporting flange 22 far away from the heat exchanging body 21 to the heat exchanging body 21, and the length of the battery is the distance between two surfaces of the battery parallel to the heat exchanging body 21; wherein a is less than or equal to 0.5b. Further, (1/6) b ≦ a ≦ 0.25b, such as a =0.2b, a =0.21b, a =0.22b, or a =0.25 b.

The relationship between the length of the supporting flange 22 and the length of the battery is set to (1/6) b is not less than a and not more than 0.25b, so that the supporting of the supporting flange 22 to the battery can be ensured, and meanwhile, a sufficient space is reserved at the bottom of the battery to be provided with the heat preservation part 62, which is beneficial to improving the heat preservation performance of the bottom of the battery pack 30.

The connectors 50 respectively connect the frame 11 and the heat exchange plate 20 to fix the heat exchange plate 20 to the frame 11. The heat exchange plate 20 is provided at both ends thereof with connectors 50, and the connectors 50 fix the heat exchange plate 20 to the frame 11. The stack 30 is supported by the support beads 22 of the heat exchange plates 20 and the heat exchange plates 20 are fixed to the rim 11 so that the weight of the stack 30 and the heat exchange plates 20 is borne by the rim 11.

As shown in fig. 6, the connector 50 includes: a first connector 51 and a second connector 52, the first connector 51 being connected to the frame 11; the second connector 52 is connected to the first connector 51 and the second connector 52 is connected to the heat exchange plate 20.

The first connecting body 51 and the second connecting body 52 may be a unitary structure, for example, the first connecting body 51 and the second connecting body 52 may be integrally formed by casting or stamping. Of course, in practical applications, the first connecting body 51 and the second connecting body 52 may also be a split structure, for example, the first connecting body 51 and the second connecting body 52 may be connected by welding or bolting to form the connector 50.

The first connector 51 and the second connector 52 are vertically disposed to form a T-shaped connector 50. The first connector 51 is disposed in parallel with the bezel 11, and the second connector 52 is disposed in parallel with the heat shield. Of course, in practical applications, the connector 50 may also be L-shaped or in-line shaped, and the embodiment of the disclosure is not limited thereto.

The second connector 52 is provided with a mounting groove 521 at one end facing the battery pack 30, and the end of the heat exchange plate 20 is inserted into the mounting groove 521. The mounting groove 521 penetrates the second coupling body 52 in a height direction, which is a direction perpendicular to the loading plate 12 of the battery case 10.

Wherein the heat exchange plate 20 and the second connector 52 are welded to form a first welding part and a second welding part, the first welding part is located at the top of the second connector 52, the second welding part is located at the bottom of the second connector 52, one side of the second connector 52 close to the loading plate 12 is a bottom, and one side of the second connector 52 far from the loading plate 12 is a top. That is, the upper and lower surfaces of the notch of the mounting groove 521 are welded to the heat exchange plate 20, respectively, and the upper and lower surfaces of the notch are welded, thereby preventing the devices from interfering with each other, and having the advantages of simple operation and stable welding.

The first connection body 51 and the frame 11 are connected by bolts, and a sealing member is disposed between the first connection body 51 and the frame 11. For example, a seal ring is provided at a portion of the first connecting body 51 where the screw hole is provided. When the connector 50 has a T-shaped structure, threaded holes may be respectively formed in the first connecting body 51 at two sides of the second connecting body 52, that is, the first connecting body 51 is connected to the frame 11 by at least two bolts.

A recess 511 is provided on a side of the connector 50 facing the bezel 11 to form an air gap between the connector 50 and the bezel 11. That is, the side of the first connecting body 51 facing the frame 11 is provided with a groove 511, and the groove 511 forms a gap between the frame 11 and the first connecting body 51, and the gap is filled with air to form an air gap. When the first connection body 51 is provided with two screw holes, the groove 511 may be provided at a position between the two screw holes of the two first connection bodies 51.

By providing an air gap between the first connection body 51 and the frame 11, heat exchange between the frame 11 and the heat exchange plate 20 can be reduced, heat dissipation performance of the battery can be improved, and weight of the battery device can be reduced.

In order to prevent damage to the medium flow path 211 when the connector 50 is coupled to the heat exchange plate 20 in the embodiment of the present disclosure, as shown in fig. 7, the end of the heat exchange plate 20 is provided with the lug 23, the lug 23 is coupled to the connector 50, and the medium flow path 211 is not provided in the lug 23. Wherein, the lug 23 is clamped in the mounting groove 521 of the second connector 52, and the upper and lower edges of the lug 23 and the notch of the mounting groove 521 are welded to form a first welding part and a second welding part.

In the embodiment of the present disclosure, the connector 50 may be connected to a side frame 112, the side frame 112 and the heat exchange plate 20 are vertically disposed, that is, the heat exchange plate 20 is disposed between two side frames 112, and both ends of the heat exchange plate 20 are connected to one side frame 112 through a connector 50, respectively.

As shown in fig. 8, the heat exchange medium pipe 70 communicates with the medium flow passage 211 in the heat exchange plate 20; the frame 11 is provided with a pipeline groove 113, and the heat exchange medium pipe 70 is arranged in the pipeline groove 113. By arranging the heat exchange medium pipe 70 in the pipe groove 113 in the frame 11, the space inside the battery device is saved, which is advantageous for improving the energy density of the battery.

Wherein, a clamping structure is arranged in the pipe groove 113, and the heat exchange medium pipe 70 is clamped in the clamping structure. For example, the clamping structure may be a semicircular clamp, and the heat exchange medium pipe 70 is a circular pipe, and when the heat exchange medium pipe 70 is pressed into the pipe groove 113, the heat exchange medium pipe 70 is clamped to the clamp. A plurality of clamping structures can be arranged in the pipe groove 113, and the clamping structures can be uniformly distributed in the pipe groove 113.

The duct groove 113 may be a rectangular groove or a circular groove provided on the inner wall of the side frame 112. The shape of the clamping structure can be matched with that of the heat exchange medium pipe 70, for example, the clamping structure has a circular bayonet when the heat exchange medium pipe 70 is a circular pipe, or the clamping structure has a rectangular bayonet when the heat exchange medium pipe is a rectangular pipe.

The heat exchange medium pipe 70 may be a multi-sectional pipe, and the heat exchange medium pipe 70 is disposed between two adjacent heat exchange plates 20. A joint portion is provided on the heat exchange plate 70, and the joint portion is connected to the heat exchange medium pipe 70 to input the coolant into the heat exchange plate 20. Illustratively, when the heat exchange plate 20 is provided with a lug, the adapter is provided to the lug.

The heat exchange plate 20 has a liquid outlet and a liquid inlet, which are connected to a heat exchange medium pipe 70, respectively. The battery device comprises a first heat exchange medium pipe and a second heat exchange medium pipe, the first heat exchange medium pipe is communicated with the liquid inlet of the heat exchange plate 20, and the first heat exchange medium pipe is used for providing cooling liquid for the heat exchange plate 20; the second heat exchange medium pipe is communicated with a liquid outlet in the heat exchange plate 20, and the second heat exchange medium pipe is used for outputting cooling liquid in the heat exchange plate 20. Correspondingly, a first pipeline groove and a second pipeline groove are arranged in the frame 11, the first pipeline groove is used for accommodating a first heat exchange medium pipe, and the second pipeline groove is used for accommodating a second heat exchange medium pipe.

Wherein, when the liquid inlet and the liquid outlet are located at the same side of the heat exchange plate 20, a first pipe groove and a second pipe groove are formed on the side frame 112 of the side frame 11. When the liquid inlet and the liquid outlet are provided on both sides of the heat exchange plate 20, the first pipe groove is provided on one side frame 112 and the second pipe groove is provided on the other side frame 112.

As shown in fig. 9 and 10, the stack 30 is provided with an end stop 81 on the side facing the duct tank 113, the end stop 81 at least partially blocking the duct tank 113. That is, the end baffle 81 at least partially covers the duct groove 113, and the duct groove 113 is covered by the end baffle 81, so that the battery pack 30 can be supported, and deformation caused by uneven stress on the end face of the battery due to the duct groove 113 formed in the side frame 112 can be avoided.

In order to ensure the strength of the end baffle 81, the end baffle 81 may be a metal plate, for example, the end baffle 81 is an aluminum plate, a copper plate, or a steel plate. The end baffle 81 is provided with an insulating buffer layer on a side facing the battery pack 30, the insulating buffer layer is connected to the battery pack 30, and the end baffle 81 is connected to the insulating buffer layer. The end baffle 81 and the battery pack 30 are insulated and buffered through the buffer insulating layer 83, and the deformation of the end baffle 81 caused by the deformation of the battery is avoided.

The insulating buffer layer comprises a foam buffer layer 82 and an insulating layer 83, and the foam buffer layer 82 is arranged on one side, facing the battery pack 30, of the end baffle 81; the insulating layer 83 is provided between the foam cushion layer 82 and the battery pack 30, and the insulating layer 83 is connected to the foam cushion layer 82.

The area of the end shield 81 is smaller than the area of the insulating layer 83, and the orthographic projection of the end shield 81 on the insulating layer 83 is located within the insulating layer 83. The area of end baffle 81 is less than the area of insulating layer 83 and can guarantee that even end baffle 81 edge takes place deformation, end baffle 81 can not with group battery 30 direct contact yet, has promoted the security of battery use.

The battery device provided by the embodiment of the present disclosure, by providing the pipe groove 113 on the frame 11, the heat exchange medium pipe 70 is installed in the pipe groove 113, so that the space inside the battery device can be saved, thereby improving the energy density of the battery device, and the heat exchange medium pipe 70 is installed in the pipe groove 113 on the side opposite to the frame 11 and the battery pack 30, which is convenient to install, thereby facilitating the improvement of the production efficiency.

The exemplary embodiments of the present disclosure also provide a method of manufacturing a battery device, which may include the steps of:

step S101, connecting a heat exchange plate and a battery pack, wherein a medium flow channel is arranged in the heat exchange plate;

step S102, connecting a heat exchange medium pipe with a heat exchange plate so as to communicate the heat exchange medium pipe with a medium flow passage;

and S103, installing a frame of the battery box, so that the heat exchange medium pipe is clamped in the pipeline groove in the frame.

According to the manufacturing method of the battery device provided by the embodiment of the disclosure, the pipeline groove 113 is formed in the frame 11, and the heat exchange medium pipe 70 is installed in the pipeline groove 113, so that the space inside the battery device can be saved, the energy density of the battery device is improved, and the heat exchange medium pipe 70 is conveniently installed in the pipeline groove 113 on the opposite surface of the frame 11 and the battery pack 30, which is beneficial to improving the production efficiency.

The steps of the method for manufacturing a battery device provided by the embodiment of the present disclosure will be described in detail below:

in step S101, the heat exchange plate 20 and the stack 30 are connected, and the heat exchange plate 20 may be connected to a side of the stack 30. Of course, in practical applications, the heat exchange plate 20 may be connected to the bottom (the side of the battery pack 30 close to the base plate) or the top (the side of the battery pack 30 far from the base plate) of the battery pack 30, and the embodiment of the disclosure is not limited thereto.

The coupling of the heat exchange plate 20 to the side of the stack 30 may be accomplished as follows: a plurality of heat exchange plates 20 and a plurality of cell stacks 30 are sequentially arranged such that one cell stack 30 is interposed between adjacent two heat exchange plates 20, and the cell stack 30 is supported by the support beads 22 of the heat exchange plates 20. A heat conductive paste may be applied between the battery pack 30 and the heat exchange body 21 to improve heat conductivity.

In step S102, the heat exchange medium pipe 70 and the heat exchange plate 20 are connected to communicate the heat exchange medium pipe 70 with the medium flow passage 211 of the heat exchange plate 20, which may be implemented as follows: the adjacent two heat exchange plates 20 are connected by the heat exchange medium pipe 70, and the heat exchange medium pipe 70 is connected to the mouthpiece portion of the heat exchange plate 20 to transmit the cooling liquid. The interface portion is sealingly connected to the heat exchange medium tube 70.

Before step S103, a method for manufacturing a battery device provided in an embodiment of the present disclosure may further include: the insulating layer 83, the cushion layer 82, and the end baffle 81 are connected to the end face of the cell stack 30 in this order, and the end face of the cell stack 30 is the face of the cell stack opposite to the duct tank 113.

In step S103, the frame 11 of the battery box is installed, so that the heat exchange medium pipe 70 is clamped in the pipe groove 113 in the frame 11, which may be implemented as follows: the side frames 112 are mounted to the ends of the stack 30 such that the heat exchange medium tubes 70 are caught in the pipe grooves 113 in the side frames 112 and the end baffles 81 at least partially block the pipe grooves 113, the side frames 112 being disposed along the arrangement direction of the heat exchange plates 20. The end frame 111 and the side frame 112 are connected, and the end frame 111 and the side frame 112 are vertically arranged, so that the end frame 111 and the side frame 112 form a frame.

After step S103, the method for manufacturing a battery device according to the embodiment of the present disclosure further includes: the heat exchange plate 20 and the side frame 112 are coupled by means of the connector 50.

It should be noted that the manufacturing method of the battery device provided in the embodiment of the present disclosure may be used to manufacture the battery device provided in the embodiment of the present disclosure, and therefore, the battery device manufactured by the manufacturing method provided in the embodiment of the present disclosure has the features of the battery device, which are not repeated herein.

According to the manufacturing method of the battery device provided by the embodiment of the disclosure, the pipeline groove 113 is formed in the frame 11, and the heat exchange medium pipe 70 is installed in the pipeline groove 113, so that the space inside the battery device can be saved, the energy density of the battery device is improved, and the heat exchange medium pipe 70 is installed in the pipeline groove 113 on the opposite surface of the frame 11 and the battery pack 30, so that the installation is convenient, and the production efficiency is improved.

The device provided by the embodiment of the disclosure can be applied to an electric vehicle, and when the battery is used for the electric vehicle, the battery device can be a battery pack which is installed on the electric vehicle and provides energy for the electric vehicle.

In practical applications, the battery pack may be mounted to a frame of an electric vehicle. The battery pack can be fixedly connected with the frame. Or the battery pack can be a modular battery pack which can be detachably connected to the vehicle body, so that the battery pack is convenient to replace.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice in the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

Claims (11)

1. A battery device, characterized in that the battery device comprises

The battery box is provided with a frame, and an accommodating space is formed in the frame;

the battery pack is arranged in the accommodating space;

the heat exchange plate is arranged in the accommodating space and is provided with a medium flow passage;

the heat exchange medium pipe is communicated with a medium flow passage in the heat exchange plate;

and one surface of the frame opposite to the battery pack is provided with a pipeline groove, and the heat exchange medium pipe is arranged in the pipeline groove.

2. The battery device according to claim 1, wherein a clamping structure is provided in the pipe groove, and the heat exchange medium pipe is clamped in the clamping structure.

3. The battery device of claim 1, wherein the battery device further comprises:

the end baffle is connected to one side, facing the pipeline groove, of the battery pack, and at least part of the end baffle is plugged in the pipeline groove.

4. The battery device of claim 3, wherein the side of the end stop facing the battery pack is provided with an insulating buffer layer, the insulating buffer layer being connected to the battery pack, and the end stop being connected to the insulating buffer layer.

5. The battery device of claim 4, wherein the insulating buffer layer comprises:

the foam buffer layer is arranged on one side, facing the battery pack, of the end baffle;

the insulating layer is arranged between the foam buffer layer and the battery pack, and the insulating layer is connected with the foam buffer layer and the battery pack respectively.

6. The battery device of claim 5 wherein the area of the end stop is less than the area of the insulating layer and the orthographic projection of the end stop on the insulating layer is within the insulating layer.

7. The cell device according to claim 1, wherein the cell device comprises a plurality of heat exchange plates, the plurality of heat exchange plates being arranged in series;

the frame has the side frame, the side frame is followed the direction of arranging of heat exchange plate sets up, the pipe duct is located the side frame.

8. The battery device according to claim 1, wherein a cell stack is provided between adjacent ones of said heat exchange plates, said cell stack including a plurality of cells, said plurality of cells being stacked such that first surfaces of the cells at ends in a cell stacking direction are opposed to said duct groove, said first surfaces of the cells being surfaces of the cells which are perpendicular to said cell stacking direction.

9. The battery device of claim 1, wherein the battery device comprises:

the first heat exchange medium pipe is communicated with a medium flow channel in the heat exchange plate and is used for providing cooling liquid for the heat exchange plate;

and the second heat exchange medium pipe is communicated with the medium flow channel in the heat exchange plate and is used for outputting the cooling liquid in the heat exchange plate.

10. The battery device according to claim 9, wherein a first pipe groove for accommodating the first heat exchange medium pipe and a second pipe groove for accommodating the second heat exchange medium pipe are provided in the rim.

11. The battery device of claim 1, wherein the heat exchange plate is provided at a side of the stack.

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