CN218005017U - Battery pack and vehicle with same - Google Patents

Abstract

The utility model discloses a battery package and have its vehicle, battery package includes: the multi-row single battery pack comprises at least one single battery, each single battery has length, width and thickness, the length of each single battery is larger than or equal to the width of each single battery, and the length of each single battery is larger than the thickness of each single battery; the cooling plates are arranged on any two adjacent rows of monomer battery packs, the length direction of the cooling plates is consistent with that of the monomer batteries, each monomer battery is provided with a plurality of side walls, the side walls comprise two oppositely arranged heat exchange side walls, and the area of each heat exchange side wall is larger than that of the other side walls of the monomer battery; the cooling plate is internally provided with a flowing channel for circulating a heat exchange medium, and the cooling plate is arranged opposite to the heat exchange side wall and is in heat conduction connection with the heat exchange side wall. According to the utility model discloses a cooling plate length direction of battery package is unanimous with battery cell length direction to battery cell large tracts of land heat transfer, the radiating efficiency is high, can realize the quick heat dissipation to the battery package.

Description

Battery pack and vehicle with same

Technical Field

The utility model belongs to the technical field of the battery and specifically relates to a battery package and have its vehicle is related to.

Background

A vehicle is provided with a battery pack to supply power to a powered device in the vehicle. Conventional battery package comprises a plurality of battery module, and in the correlation technique, set up the liquid cooling board between two battery module in order to dispel the heat to battery module cooling, however in this design, the area of contact of liquid cooling board and battery module is limited, and is not ideal to battery module's radiating effect.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the present invention is to provide a battery pack. According to the utility model discloses a cooling plate length direction of battery package is unanimous with battery cell length direction to battery cell large tracts of land heat transfer, the radiating efficiency is high, can realize the quick heat dissipation to the battery package.

The utility model discloses still provide a vehicle that has above-mentioned battery package.

According to the utility model discloses a battery package includes: a case including a battery tray and a sealing cover cooperating with the battery tray to define an accommodation space, the case being provided with a fixing portion adapted to be fixed to a vehicle body; the multiple rows of single battery packs are arranged in the accommodating space at intervals, each row of single battery pack comprises at least one single battery, each single battery has length, width and thickness, the length of each single battery is greater than or equal to the width of each single battery, and the length of each single battery is greater than the thickness of each single battery; the battery pack comprises two rows of single batteries, wherein any two adjacent rows of single batteries are provided with cooling plates, the length direction of the cooling plates is consistent with that of the single batteries, each single battery is provided with a plurality of side walls, the side walls comprise two oppositely arranged heat exchange side walls, and the area of each heat exchange side wall is larger than that of the rest side walls of the single batteries; the cooling plate is internally provided with a flowing channel for circulating a heat exchange medium, and the cooling plate is arranged opposite to the heat exchange side wall and is in heat conduction connection with the heat exchange side wall.

According to the utility model discloses an adjacent two rows of battery packs department is equipped with the cooling plate in the battery package, because the area of battery cell's heat transfer lateral wall is greater than the area of all the other lateral walls of battery cell, with the cooling plate length direction unanimous arrangement of direction of length and battery cell and with heat transfer lateral wall heat conduction connection, can improve the area of contact of battery cell and cooling plate, thereby improve the heat exchange efficiency to battery cell, with dispel the heat fast to the battery package, when the battery cell inflation, battery cell's heat transfer lateral wall takes place to warp, it makes the cooling plate have certain buffer capacity to be equipped with the flow runner that is used for circulating heat transfer medium in the cooling plate, the cooling plate can provide buffer space for the deformation of heat transfer lateral wall simultaneously, avoid the battery to take place unusually.

According to some embodiments of the invention, the cooling plate is fixed to the respective cell; and/or the cooling plate is fixed to a bottom wall of the accommodating space.

According to some embodiments of the invention, the bottom wall of the cooling plate and the battery cell are arranged in parallel and level, the cooling plate and the battery cell are all glued to the bottom wall of the accommodating space.

According to the utility model discloses a some embodiments, the cooling plate with be equipped with the heat conduction between the heat transfer lateral wall and glue.

According to the utility model discloses a some embodiments, the value range of cooling plate thickness L1 does: l1 is more than or equal to 6mm and less than or equal to 8mm; and/or the value range of the thickness L2 of the heat-conducting glue is as follows: l2 is more than or equal to 1mm and less than or equal to 1.4mm.

According to the utility model discloses a some embodiments, the relative lateral wall of cooling plate is equipped with the depressed groove, is located the cooling plate both sides a part of battery cell holds respectively in corresponding in the depressed groove.

According to some embodiments of the invention, the bottom wall of the cooling plate is fixed to the bottom wall of the accommodation space, the top of the cooling plate extending beyond the top of the cell.

According to some embodiments of the utility model, be equipped with the fretwork district on the cooling plate, the fretwork district with the heat transfer lateral wall is just to setting up, be equipped with fire-retardant in the fretwork district.

According to the utility model discloses a some embodiments, the battery package still includes the insulating part, the cooling plate with the corresponding side all be equipped with between the battery cell the insulating part, the insulating part shutoff the fretwork district.

According to some embodiments of the utility model, every row the battery cell group includes a plurality ofly battery cell, every row a plurality ofly battery cell's the direction of arranging is on a parallel with the length direction of heat transfer lateral wall.

A vehicle according to another aspect of the present invention is briefly described below.

According to the utility model discloses a vehicle includes: a vehicle body; a battery pack according to any one of the above embodiments, wherein the fixing portion is fixed to the vehicle body. Because according to the utility model discloses a vehicle is provided with the battery package of above-mentioned embodiment, consequently the difficult condition that expands to the battery package inclusion fracture that appears of battery package when this vehicle uses, and the security performance of battery package is good and the radiating efficiency is high, can realize dispelling the heat fast.

To sum up, the utility model discloses a battery package sets up the cooling plate that has flow channel between adjacent battery module in order to reserve buffer space, thereby avoid the battery module inflation to lead to the unusual condition of battery package to take place, the cooling plate is connected in order to dispel the heat to battery cell with battery cell's heat transfer lateral wall heat conduction, the length direction of cooling plate and battery cell's length direction unanimous arrange in order to realize the heat transfer of battery cell by a large scale, improve the heat exchange efficiency to battery cell, and the cooling plate still is provided with the radiating effect of further reinforcing cooling plate in fretwork district, certain space is dodged in the fretwork district simultaneously, the condition of cooling plate extrusion battery takes place when can effectively reducing the battery inflation.

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

Drawings

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

fig. 1 is a plan view of a unit battery pack according to an embodiment of the present invention.

Fig. 2 is a schematic view of the installation position of the flame retardant member according to the embodiment of the present invention.

Fig. 3 is a schematic view of a cooling plate installation position according to an embodiment of the present invention.

Fig. 4 is an enlarged view of circled a in fig. 3.

Fig. 5 is a schematic view of the installation position of the flame retardant member and the cooling plate according to another embodiment of the present invention.

Fig. 6 is a schematic diagram of the positions of the hollow-out areas according to an embodiment of the present invention.

Fig. 7 is a schematic diagram of a position of a hollow-out area according to another embodiment of the present invention.

Reference numerals are as follows:

a unit battery pack 100; a single battery 101; a cooling plate 110; a hollowed-out region 111; a cooling connection 112; a flame retardant member 120; an insulating member 130.

Detailed Description

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

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly defined otherwise.

In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically connected, electrically connected or can communicate with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

A vehicle is provided with a battery pack to supply power to a powered device in the vehicle. Conventional battery package comprises a plurality of battery module, and in the correlation technique, set up the liquid cooling board between two battery module in order to dispel the heat to battery module cooling, however in this design, the area of contact of liquid cooling board and battery module is limited, and is not ideal to battery module's radiating effect.

A battery pack according to an embodiment of the present invention is described below with reference to fig. 1 to 7.

As shown in fig. 1, the battery pack according to the present invention includes: a housing and a plurality of rows of cell stacks 100. The outer shell comprises a battery tray and a sealing cover, the sealing cover is matched with the battery tray to limit an accommodating space, and the outer shell is provided with a fixing part which is suitable for being fixed to a vehicle body; multiple rows of single battery packs 100 are arranged in the accommodating space, each row of single battery packs 100 comprises at least one single battery 101, each single battery 101 has a length, a width and a thickness, the length of each single battery 101 is greater than or equal to the width of each single battery 101, and the length of each single battery 101 is greater than the thickness of each single battery 101; any two adjacent rows of the single battery packs 100 are provided with cooling plates 110, the length direction of the cooling plates 110 is consistent with the length direction of the single batteries 101, each single battery 101 is provided with a plurality of side walls, the side walls comprise two oppositely arranged heat exchange side walls, and the area of each heat exchange side wall is larger than that of the other side walls of the single battery 101.

A flowing channel for circulating a heat exchange medium is arranged in the cooling plate 110, and the cooling plate 110 is arranged opposite to the heat exchange side wall and is in heat conduction connection with the heat exchange side wall. Specifically, the battery pack comprises a battery tray, a sealing cover forming a containing space with the battery tray, and a plurality of rows of single battery packs 100 arranged in the containing space, wherein the plurality of rows of single battery packs 100 are arranged at intervals in an array, a cooling plate 110 is arranged at the single battery packs 100 in rows or columns to cool and dissipate heat of the single batteries 101, and a flow channel in the cooling plate 110 is used for circulating a heat exchange medium. More specifically, the unit cell 101 can all produce heat in the process of charging and discharging, if the unit cell 101 has the risk tendency of expansion bulge, the region that takes place to warp in the unit cell 101 is located the heat transfer lateral wall on a large scale, through be equipped with cooling plate 110 between arbitrary two rows of unit cell group 100, the heat conducts to cooling plate 110 through the heat transfer lateral wall, the flow channel that circulates heat transfer medium has in the cooling plate 110, heat transfer medium can take away the produced heat of unit cell 101 when flowing in the flow channel, with the multirow unit cell group 100 of the accommodation space dispel the heat, and then reduce the temperature in the accommodation space, guarantee that multirow unit cell group 100 can stable work in the accommodation space. When the battery expands, the heat exchange side wall has an expansion deformation risk, and a flow channel for the heat exchange medium to flow is arranged in the cooling plate 110, so that the cooling plate 110 can play a role in buffering the expanded heat exchange side wall.

It should be noted that, the cooling plate 110 is in heat conduction connection with the heat exchange side wall, which means that the cooling plate 110 is directly or indirectly fixed on the heat exchange side wall, so that the cooling plate 110 and the heat exchange side wall are kept relatively static, and meanwhile, heat exchange is provided between the cooling plate 110 and the heat exchange side wall, so that the cooling plate 110 is in direct contact with the heat exchange side wall to directly transfer heat of the single battery 101 to the cooling plate 110, or the cooling plate 110 is indirectly matched with the heat exchange side wall through a heat conducting member (such as heat conducting glue, etc.) to transfer heat of the single battery 101 to the cooling plate 110 through the heat conducting member, thereby ensuring a heat exchange area between the cooling plate 110 and the single battery 101, and facilitating to ensure that the heat of the single battery 101 is taken away by the heat exchange medium in time.

According to the utility model discloses a two rows of adjacent battery packs 100 departments are equipped with cooling plate 110 in the battery package, because the area of battery cell 101's heat transfer lateral wall is greater than the area of all the other lateral walls of battery cell 101, with cooling plate 110 at length direction and battery cell 101's length direction unanimous arrangement and with heat transfer lateral wall heat conduction connection, can improve battery cell 101 and cooling plate 110's area of contact, thereby improve the heat exchange efficiency to battery cell 101, with dispel the heat fast to the battery package, when battery cell 101 expands, battery cell 101's heat transfer lateral wall takes place to warp, be equipped with the flow runner that is used for circulating heat transfer medium in the cooling plate 110 and make cooling plate 110 have certain buffer capacity, cooling plate 110 can provide buffer space for heat transfer lateral wall's deformation simultaneously, avoid the battery to take place unusually.

In some embodiments, the positive and negative poles of each unit cell 101 are disposed toward or away from the sealing cover, and the plurality of rows of unit cell groups 100 are fixed to the bottom wall of the receiving space. Specifically, positive and negative poles of each battery cell 101 face or deviate from the sealed lid and set up and be convenient for carry out operations such as wiring, maintenance or change to battery cell 101, when needing to maintain or change one or more in multirow battery cell 101, take off sealed lid can, convenient operation.

According to some embodiments of the present invention, as shown in fig. 1, the cooling plates 110 are fixed to the respective unit batteries 101; and/or the cooling plate 110 is fixed to the bottom wall of the receiving space. In some embodiments, the cooling plate 110 is fixed to the respective unit battery 101 to achieve cooling of the unit battery 101; in other embodiments, the cooling plate 110 is fixed to the bottom wall of the receiving space to define the installation site of the unit battery 101; in other embodiments, the cooling plate 110 is fixed to the bottom wall of the receiving space and is fixed with the corresponding unit battery 101 to fix the unit battery 101 in the receiving space.

According to some embodiments of the present invention, the bottom wall of the cooling plate 110 and the single battery 101 are arranged flush, and the cooling plate 110 and the single battery 101 are both glued to the bottom wall of the accommodating space. Specifically, the cooling plate 110 and the bottom end of the unit cell 101 are glued to the bottom wall of the receiving space to achieve the fixation of the unit cell 101.

According to some embodiments of the utility model, be equipped with the heat-conducting glue between cooling plate 110 and the heat transfer lateral wall. Specifically, be equipped with between cooling plate 110 and the heat transfer lateral wall and conduct heat and glue in order to realize cooling plate 110 and heat transfer lateral wall's heat conduction and connect, strengthen the inside structural stability of battery package and the heat transfer effect of cooling plate 110 and heat transfer lateral wall.

According to the utility model discloses a some embodiments, the value range of the thickness L1 of cooling plate 110 does: l1 is more than or equal to 6mm and less than or equal to 8mm; and/or the value range of the thickness L2 of the heat-conducting glue is as follows: l2 is more than or equal to 1mm and less than or equal to 1.4mm. Specifically, the thicknesses of the cooling plate 110 and the heat-conducting glue both affect the heat dissipation efficiency of the single battery 101, in order to ensure that the heat dissipation efficiency of the single battery 101 is good, the thickness L1 of the cooling plate 110 is not more than 8mm, and the thickness L2 of the heat-conducting glue is not more than 1.4mm, and meanwhile, in order to ensure that the cooling plate 110 has good buffering capacity and structural strength, the thickness L1 of the cooling plate 110 is not less than 6mm, and the thickness L2 of the heat-conducting glue is not less than 1mm, so that the thickness range of the cooling plate 110 is not less than 6mm and not more than 8mm, and the thickness range of the heat-conducting glue is not less than 1mm and not more than 1.4mm.

According to some embodiments of the present invention, the opposite side walls of the cooling plate 110 are provided with recessed grooves, and a portion of the single battery 101 located at both sides of the cooling plate 110 is respectively accommodated in the corresponding recessed grooves. Specifically, the cooling plates 110 are disposed between adjacent unit battery packs 100, the opposite sidewalls of the cooling plates 110 each form a recessed groove, the recessed grooves of the cooling plates 110 arranged in sequence are disposed adjacently and two adjacently disposed recessed grooves form a space suitable for installation of the unit battery packs 100. The concave groove formed in the cooling plate 110 not only facilitates installation of the single battery 101, but also reduces the overall size of the battery pack.

According to some embodiments of the present invention, as shown in fig. 4-5, the bottom wall of the cooling plate 110 is fixed to the bottom wall of the accommodating space, and the top of the cooling plate 110 extends beyond the top of the unit cell 101. Specifically, the top of the cooling plate 110 extends beyond the top of the unit cell 101 so that the flow channel may extend to be directly opposite to the top of the unit cell 101, thereby enhancing the heat exchange effect of the cooling plate 110 to the unit cell 101. In some embodiments, as shown in FIG. 4, the distance between the top of the cooling plate 110 and the top of the single battery 101 is A, and A is in a range of 3mm ≦ A ≦ 15mm.

According to the utility model discloses a some embodiments, as shown in fig. 6, be equipped with fretwork area 111 on the cooling plate 110, fretwork area 111 is just to setting up with the heat transfer lateral wall, is equipped with fire-retardant piece 120 in the fretwork area 111. Specifically, the cooling plate 110 is provided with a hollow-out region 111, in some embodiments, the hollow-out region 111 is disposed along a thickness direction of the cooling plate 110, the flame retardant member 120 is filled in the hollow-out region 111, the hollow-out region 111 corresponds to a large-area middle region of the single battery 101, a situation that the cooling plate 110 extrudes the battery when the battery expands can be effectively reduced, the hollow-out region 111 can prevent excessive heat from gathering on the cooling plate 110, and the hollow-out region 111 is disposed to enhance a heat dissipation effect of the cooling plate 110.

According to some embodiments of the present invention, as shown in fig. 1, the battery pack further includes an insulating member 130, the insulating member 130 is disposed between the cooling plate 110 and the corresponding single battery 101, and the hollow area 111 is blocked by the insulating member 130. Specifically, the insulating member 130 is attached to the side of the cooling plate 110 to close the hollow-out region 111, so as to prevent the battery from leaking, and preferably, the orthographic projection of the heat exchange sidewall of the unit battery 101 is located in the attachment surface of the insulating member 130.

In some embodiments, as shown in fig. 7, the plurality of hollow-out areas 111 may be provided, each hollow-out area 111 corresponds to a middle region of a heat exchange sidewall of one single battery 101, a cooling connection portion 112 integrally disposed with the cooling plate 110 is disposed at a connection portion of adjacent single batteries 101, the cooling connection portion 112 can improve the overall strength of the hollow-out cooling plate 110, and the cooling connection portion 112 has a circulation channel communicated with the inside of the cooling plate 110 to enhance a heat dissipation effect of the single batteries 101.

According to some embodiments of the present invention, as shown in fig. 1, each row of the unit battery pack 100 includes a plurality of unit batteries 101, and the arrangement direction of the plurality of unit batteries 101 in each row is parallel to the length direction of the heat exchange sidewall. Specifically, the plurality of single cells 101 are sequentially arranged, and the cooling plate 110 is disposed between every two adjacent rows of single cell stacks 100, each single cell 101 includes a set of heat exchange sidewalls that are disposed oppositely, and the length direction of the heat exchange sidewalls is parallel to the arrangement direction of the single cells 101, so that the cooling plate 110 is disposed opposite to the heat exchange sidewalls of each single cell 101, and the cooling plate 110 cools the heat exchange sidewalls.

The utility model discloses an in some embodiments, the battery package includes the battery tray, form accommodation space's sealed lid with the battery tray, arrange multirow battery cell group 100 in accommodation space, multirow battery cell group 100 is array interval setting, battery cell 101 has length, width and thickness, battery cell 101's length is more than or equal to battery cell 101's width, battery cell 101's length and be greater than battery cell 101's thickness, the length direction of cooling plate 110 is unanimous with battery cell 101's length direction, and the flow runner circulation in the cooling plate 110 has heat transfer medium.

It can be understood that since the cooling plate 110 has a certain rigid supporting capability, the cooling plate 110 is provided on any side of the battery in the height direction, which can improve the structural strength of the unit battery pack 100 in the height direction. The cooling plate 110 can be arranged between the adjacent single battery packs 100, and the cooling plate 110 can extend along the length direction of the single batteries 101, so that the single batteries 101 have certain rigid supporting force, and further the structural strength between the single batteries 101 and the single batteries 101 is improved, and the purpose of ensuring the rigid strength of the battery tray to a certain extent is realized even if the single battery packs 100 are placed in the battery tray without a cross beam. The single battery 101 may be a single battery 101 disposed in the x, y, or z direction of the battery tray, or an included angle between the x and y directions, or a plurality of single batteries 101 stacked in the thickness direction or in the length direction, preferably, a plurality of single batteries 101 are stacked in the length direction, that is, the surface of the largest area of the single battery 101 is exposed, so as to provide the cooling plate 110, achieve the purpose of maximizing the contact area between the single battery 101 and the cooling plate 110, and further improve the heat dissipation efficiency of the single battery pack 100.

As shown in fig. 1, the cooling plate 110 is disposed between the first unit cell 101 and the second unit cell 101, and the flame retardant member 120 is disposed between the third unit cell 101 and the fourth unit cell 101, in such an arrangement, which are sequentially stacked. The insulating member 130 may be a coating layer or a coating film, and is disposed on the cooling plate 110, and the insulating member 130 is also attached to two sides of the flame retardant member 120, as shown in fig. 2, so that heat exchange can be performed between adjacent single batteries 101 through the cooling plate 110, and thermal runaway stability between adjacent single batteries 101 can be ensured. The flame retardant member 120 has a cushioning property, and may be made of a material such as an aerogel cushion.

As shown in fig. 2, the insulating members 130 are attached to both sides of the flame retardant member 120, and preferably, the insulating members 130 on both sides of the flame retardant member 120 are coated toward the unit cells 101 in a manner of facing away from the flame retardant member 120; the bottom ends of the single batteries 101 are fixed by structural adhesive, and the bottom ends of the high-temperature insulators 130 are also fixed by structural adhesive. In other embodiments, as shown in fig. 5, the insulating member 130 and the flame-retardant member 120 are sequentially stacked on both sides of the cooling plate 110.

As shown in fig. 3, the cooling plate 110 is strip-shaped and disposed between the adjacent unit battery packs 100, the side wall of the cooling plate 110 is provided with a recessed groove for receiving the corresponding unit battery 101, and preferably, the opposite side walls of the cooling plate 110 are provided with recessed grooves, so that the flame retardant member 120 and the insulating member 130 are stacked and disposed in the recessed grooves. The area of the forward projection of the concave groove onto the unit cell 101 is the same as the area of the maximum surface of the unit cell 101. As shown in FIG. 4, the distance between the top of the cooling plate 110 and the top of the single battery 101 is A, and the value range of A is 3 mm-15 mm.

As shown in fig. 6, the cooling plate 110 is provided with a hollow-out area 111, the hollow-out area 111 is disposed along the thickness direction of the cooling plate 110, the flame retardant member 120 is filled in the hollow-out area 111, the insulating member 130 is attached to the side surface of the cooling plate 110 to close the hollow-out area 111, and the hollow-out area 111 corresponds to the middle area of the maximum surface of the single battery 101, which can effectively reduce the occurrence of the battery being squeezed by the cooling plate 110 when the battery expands, and preferably, the large-area orthographic projection of the cooling plate 110 is located in the attachment plane of the insulating member 130. As shown in fig. 7, the plurality of hollow-out areas 111 are provided, each hollow-out area 111 corresponds to the largest surface of one single battery 101, a cooling connection portion 112 integrally disposed with the cooling plate 110 is disposed at the connection position of adjacent single batteries 101, and the cooling connection portion 112 can improve the overall strength of the hollow-out cooling plate 110 and has a circulation channel communicated with the inside of the cooling plate 110.

The vehicle according to the present invention is briefly described below.

According to the utility model discloses a vehicle includes: the automobile body and battery package. The battery pack is the battery pack according to any one of the above embodiments, and the fixing portion is fixed to the vehicle body, thereby fixing the battery pack to the vehicle body. Because according to the utility model discloses a vehicle is provided with the battery package of above-mentioned embodiment, consequently the difficult condition that expands to the battery package inclusion fracture that appears of battery package when this vehicle uses, and the security performance of battery package is good and the radiating efficiency is high, can realize dispelling the heat fast.

To sum up, the utility model discloses a battery package sets up the cooling plate 110 that has flow channel between adjacent battery module in order to reserve buffer space, thereby avoid the battery module inflation to lead to the unusual condition of battery package to take place, cooling plate 110 is connected in order to dispel the heat to battery cell 101 with battery cell 101's heat transfer lateral wall heat conduction, length direction with cooling plate 110 and battery cell 101's length direction unanimous arrange in order to realize battery cell 101 large tracts of land heat transfer, improve the heat exchange efficiency to battery cell 101, and cooling plate 110 still is provided with the radiating effect of further reinforcing cooling plate 110 in fretwork district 111, certain space is dodged out in fretwork district 111 simultaneously, cooling plate 110 extrudes the condition of battery and takes place when can effectively reducing the battery inflation.

In the description of the present specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.

While embodiments of the present invention have been shown and described above, variations, modifications, substitutions, and alterations may be made to the above embodiments.

Claims (11)

1. A battery pack, comprising:

a case including a battery tray and a sealing cover cooperating with the battery tray to define an accommodation space, the case being provided with a fixing portion adapted to be fixed to a vehicle body;

the multiple rows of single battery packs (100), the multiple rows of single battery packs (100) are arranged in the accommodating space, each row of single battery packs (100) comprises at least one single battery (101), each single battery (101) has a length, a width and a thickness, the length of each single battery (101) is greater than or equal to the width of each single battery (101), and the length of each single battery (101) is greater than the thickness of each single battery (101);

any two adjacent rows of the unit battery packs (100) are provided with cooling plates (110), the length direction of the cooling plates (110) is consistent with the length direction of the unit batteries (101), each unit battery (101) is provided with a plurality of side walls, the side walls comprise two oppositely arranged heat exchange side walls, and the area of each heat exchange side wall is larger than that of the other side walls of the unit battery (101);

a flowing channel for circulating a heat exchange medium is arranged in the cooling plate (110), and the cooling plate (110) is arranged opposite to the heat exchange side wall and is in heat conduction connection with the heat exchange side wall.

2. The battery pack according to claim 1, wherein the cooling plate (110) is fixed to the corresponding unit battery (101); and/or

The cooling plate (110) is fixed to a bottom wall of the accommodating space.

3. A battery pack according to claim 2, wherein the bottom wall of the cooling plate (110) and the battery cells (101) are arranged flush, and the cooling plate (110) and the battery cells (101) are glued to the bottom wall of the receiving space.

4. The battery pack of claim 1, wherein a thermally conductive adhesive is disposed between the cooling plate (110) and the heat exchanging sidewall.

5. The battery pack according to claim 4, wherein the thickness L1 of the cooling plate (110) has a value in the range of: l1 is more than or equal to 6mm and less than or equal to 8mm; and/or

The value range of the thickness L2 of the heat-conducting glue is as follows: l2 is more than or equal to 1mm and less than or equal to 1.4mm.

6. The battery pack according to claim 1, wherein opposite side walls of the cooling plate (110) are provided with recessed grooves, and a portion of the unit cells (101) located at both sides of the cooling plate (110) are respectively received in the respective recessed grooves.

7. The battery pack according to claim 1, wherein a bottom wall of the cooling plate (110) is fixed to a bottom wall of the receiving space, and a top of the cooling plate (110) extends beyond a top of the unit battery (101).

8. The battery pack according to claim 1, wherein a hollow-out area (111) is formed on the cooling plate (110), the hollow-out area (111) is opposite to the heat exchange side wall, and a flame retardant member (120) is arranged in the hollow-out area (111).

9. The battery pack according to claim 8, further comprising an insulating member (130), wherein the insulating member (130) is disposed between the cooling plate (110) and the corresponding side of the single battery (101), and the insulating member (130) blocks the hollow-out area (111).

10. The battery pack according to any one of claims 1 to 9, wherein each row of the unit battery pack (100) comprises a plurality of the unit batteries (101), and the arrangement direction of the plurality of the unit batteries (101) in each row is parallel to the length direction of the heat exchange side wall.

11. A vehicle, characterized by comprising:

a vehicle body;

a battery pack according to any one of claims 1 to 10, the fixing portion being fixed to the vehicle body.

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