CN217788541U - Battery pack and vehicle with same - Google Patents

Abstract

The utility model discloses a battery package and have its vehicle, battery package includes: the battery pack comprises a shell, a battery pack and a battery pack, wherein the shell comprises a battery tray and a sealing cover, the sealing cover is matched with the battery tray to limit a containing space, the shell is provided with a fixing part, and the fixing part is suitable for being fixed to a vehicle body; multirow battery cell group, multirow battery cell group establish in accommodation space, every row battery cell group includes at least one battery cell, and arbitrary two adjacent rows of battery cell groups are equipped with cooling plate or first heat insulating part, and in multirow battery cell group direction of arranging, cooling plate and first heat insulating part are arranged in turn, are equipped with the flow channel that is used for circulating heat transfer medium in the cooling plate, and the cooling plate is connected with corresponding battery cell group heat conduction. According to the utility model discloses a battery package can dispel the heat or block heat transfer to two adjacent battery packs, avoids taking place because single battery is overheated and lead to whole battery package to take place unusual condition, strengthens the operational reliability of 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 power consuming device in the vehicle. The conventional battery pack is composed of a plurality of battery modules, in the related art, a liquid cooling plate is arranged between two battery modules to cool and radiate the battery modules, however, under the condition that the cooling and radiating effects of the liquid cooling plate are poor, the overheating of a single battery module can affect the adjacent battery modules, so that the battery is overheated, and the potential safety hazard exists in the battery pack.

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, the utility model discloses an aim at provides a battery package. According to the utility model discloses a battery package can dispel the heat or block heat transfer to two adjacent battery cell groups, avoids taking place because single battery cell is overheated and lead to whole battery package to take place unusual circumstances, strengthens the operational reliability of 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; multirow monomer group battery, multirow monomer group battery is established in the accommodation space, every row monomer group battery includes at least one monomer battery, arbitrary adjacent two rows monomer group battery is equipped with cooling plate or first heat insulating part in multirow monomer group battery direction of arranging, the cooling plate with first heat insulating part arranges in turn, be equipped with the flow channel who is used for circulating heat transfer medium in the cooling plate, the cooling plate with corresponding monomer group battery heat conduction is connected.

According to the utility model discloses a battery package sets up the heat of cooling plate or first heat insulating part in order to separate adjacent monomer group battery in two adjacent rows of monomer group battery departments, and wherein the cooling plate can be to monomer group battery heat dissipation treatment, and the heat transfer of adjacent monomer group battery can be blocked to first heat insulating part to avoid leading to whole battery to take place unusually because single monomer battery is overheated under the poor condition of cooling plate cooling effect, strengthen the operational reliability of battery package.

According to the utility model discloses a some embodiments, the cooling plate with corresponding between the group of cells first heat insulating part and corresponding all be equipped with the insulating part between the group of cells.

According to some embodiments of the invention, the cooling plate and correspondingly be equipped with the second heat insulating part between the cell group.

According to the utility model discloses a some embodiments, every the battery cell is equipped with a plurality of lateral walls, including the heat transfer lateral wall of two relative settings in a plurality of lateral walls, the area of heat transfer lateral wall is greater than the area of the all the other lateral walls of battery cell, the cooling plate with the heat transfer lateral wall sets up relatively and heat conduction is connected, first heat insulating part and corresponding the heat transfer lateral wall sets up relatively.

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, the bottom wall of the first heat insulation piece and the battery cell are arranged in parallel and level, the cooling plate, the first heat insulation piece and the battery cell are all glued to the bottom wall of the accommodating space.

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

According to some embodiments of the present invention, the thickness L1 of the cooling plate has a value range of 6mm or more and L1 or less and 8mm or less; 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 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.

According to some embodiments of the present invention, the opposite side walls of the cooling plate are provided with recessed grooves, and a portion of the unit cells located at both sides of the cooling plate are respectively accommodated in the corresponding recessed grooves.

According to some embodiments of the utility model, be equipped with the fretwork district on the cooling plate, the fretwork district with battery cell is just to setting up, be equipped with the third heat insulating part in the fretwork district.

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

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

According to the utility model discloses a vehicle includes: the battery pack of 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, the security performance of battery package is good.

To sum up, the utility model discloses a battery package sets up cooling plate or first heat insulating part in two rows of adjacent battery cell groups department, can separate the heat of adjacent battery cell groups to first heat insulating part piles up in proper order with battery cell groups and makes first heat insulating part can block the heat transfer of two adjacent battery cell groups, thereby avoids leading to whole battery to take place unusually because single battery cell is overheated under the poor condition of cooling plate cooling effect, strengthens the operational reliability of battery package.

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 top view of a cell stack according to an embodiment of the present invention.

Fig. 2 is a schematic view of an installation position of a heat insulator according to an 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 circle a in fig. 3.

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

Fig. 6 is a schematic diagram of a position of a hollow-out area 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 cell 101; a cooling plate 110; a hollowed-out region 111; a cooling connection 112; a first thermal insulator 121; a second thermal shield 122; an insulating member 130.

Detailed Description

Reference will now be made in detail to the 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 functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for 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 to simplify 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 implicitly indicating 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 specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; 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 skilled 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. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating 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 power consuming device in the vehicle. Conventional battery package comprises a plurality of battery module, and in the correlation technique, set up liquid cold plate between two battery module in order to dispel the heat to battery module cooling, nevertheless under the poor condition of liquid cold plate cooling radiating effect, adjacent battery module can be influenced to single battery module is overheated to lead to the battery to be overheated, such battery package has the potential safety hazard.

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 a containing 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, any two adjacent rows of single battery packs 100 are provided with cooling plates 110 or first heat insulation pieces 121, the cooling plates 110 and the first heat insulation pieces 121 are alternately arranged in the arrangement direction of the multiple rows of single battery packs 100, flow channels for circulating heat exchange media are arranged in the cooling plates 110, and the cooling plates 110 are in heat conduction connection with the corresponding single battery packs 100.

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 in an array, and a cooling plate 110 is arranged at the rows or columns of single battery packs 100 to cool and dissipate heat of the single batteries 101. In some embodiments, 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 first thermal insulator 121 is disposed between the third unit cell 101 and the fourth unit cell 101, in such an arrangement, which are sequentially stacked. Both the cooling plate 110 and the first heat insulating part 121 have certain buffering performance, the single battery 101 generates heat in the charging and discharging processes, the cooling plate 110 can cool and dissipate the single battery 101, the first heat insulating part 121 blocks heat transfer between two adjacent rows of single battery packs 100, if one single battery 101 has a tendency of overheating bulge, a certain buffering effect can be provided when the battery expands by arranging the cooling plate 110 or the first heat insulating part 121 between the single batteries 101, meanwhile, the first heat insulating part 121 can prevent the single battery 101 of the overheating bulge from transferring heat to the single battery 101 adjacent to one side, and the normal work of the whole battery pack is prevented from being influenced by overheating of the single battery 101.

It should be noted that, the heat conduction connection between the cooling plate 110 and the single battery pack 100 means that the cooling plate 110 is directly or indirectly fixed on the single battery pack 100, so that the cooling plate 110 and the single battery pack 100 are kept relatively static, and meanwhile, heat exchange is provided between the cooling plate 110 and the single battery pack 100, so that the cooling plate 110 is directly contacted with the single battery pack 100 to directly transfer the heat of the single battery 101 to the cooling plate 110, or the cooling plate 110 is indirectly matched with the single battery pack 100 through a heat conduction member (such as a heat conduction glue, etc.) to transfer the heat of the single battery 101 to the cooling plate 110 through the heat conduction member, thereby ensuring that the heat of the single battery 101 is timely taken away by a heat exchange medium.

According to the utility model discloses a battery package sets up cooling plate 110 or first heat insulating part 121 in order to separate adjacent monomer battery group 100's heat in two adjacent rows of monomer battery group 100 departments, wherein cooling plate 110 can be to monomer battery group 100 heat dissipation treatment, and first heat insulating part 121 can block adjacent monomer battery group 100's heat transfer to avoid leading to whole battery to take place unusually because single battery 101 is overheated under the poor condition of cooling plate 110 cooling effect, strengthen the operational reliability of battery package.

According to some embodiments of the present invention, as shown in fig. 1, 2, and 4, an insulating member 130 is disposed between the cooling plate 110 and the corresponding cell group 100, and between the first heat insulating member 121 and the corresponding cell group 100. Specifically, the insulation members 130 attached to both sides of the first thermal insulation member 121 can prevent battery leakage under the condition of thermal insulation, and in some embodiments, the insulation members 130 on both sides of the first thermal insulation member 121 are wrapped away from the first thermal insulation member 121 towards the single battery 101; the insulating member 130 is attached between the cooling plate 110 and the corresponding unit battery pack 100 to achieve insulation, preventing leakage of the battery. In some embodiments, the insulating member 130 may be a coating or a covering film, and is disposed on the cooling plate 110, and the insulating member 130 is also attached to two sides of the first heat insulating member 121, as shown in fig. 2, so that heat exchange between adjacent single batteries 101 can be performed through the cooling plate 110, and thermal runaway stability between adjacent single batteries 101 can be ensured.

According to some embodiments of the present invention, as shown in fig. 5, a second heat insulator 122 is provided between the cooling plate 110 and the corresponding unit battery pack 100. Specifically, the second thermal insulation member 122 is stacked between the cooling plate 110 and the corresponding unit battery pack 100 to achieve a better buffering effect.

According to the utility model discloses a some embodiments, every battery cell 101 is equipped with a plurality of lateral walls, including the heat transfer lateral wall of two relative settings in a plurality of lateral walls, and the area of heat transfer lateral wall is greater than the area of all the other lateral walls of battery cell 101, and the cooling plate 110 sets up and heat conduction is connected with the heat transfer lateral wall relatively, and first heat insulating part 121 sets up with corresponding heat transfer lateral wall relatively. Specifically, if the battery cell 101 has the risk trend of expansion bulge, the region that takes place to warp in the battery cell 101 is probably located the heat transfer lateral wall, through be equipped with cooling plate 110 between arbitrary two rows of battery cell 100, the heat conducts to cooling plate 110 through the heat transfer lateral wall, the flow channel that has circulation heat transfer medium in the cooling plate 110, heat transfer medium can take away the produced heat of battery cell 101 when flowing in flow channel, with dispel the heat to multirow battery cell 100 in the accommodation space, and then reduce the temperature in the accommodation space, guarantee that multirow battery cell 100 can stably work in the accommodation space. The area of the heat exchange side wall of the single battery 101 is larger than the area of the other side walls of the single battery 101, so that the heat exchange efficiency between the single battery 101 and the cooling plate 110 can be improved, and the single battery 101 can be rapidly cooled. The cooling plate 110 and the first heat insulating member 121 are disposed opposite to the corresponding heat exchange sidewalls to provide a buffering function when the heat exchange sidewalls are expanded and deformed, thereby preventing the battery from being excessively deformed.

It should be noted that, the cooling plate 110 is connected to the heat exchange sidewall in a heat conducting manner, which means that the cooling plate 110 is directly or indirectly fixed to the heat exchange sidewall, so that the cooling plate 110 and the heat exchange sidewall are kept relatively stationary, and meanwhile, heat exchange is performed between the cooling plate 110 and the heat exchange sidewall, so that the cooling plate 110 is directly contacted with the heat exchange sidewall to directly transfer the heat of the battery cell 101 to the cooling plate 110, or the cooling plate 110 is indirectly matched with the heat exchange sidewall through a heat conducting member (such as a heat conducting glue, etc.) to transfer the heat of the battery cell 101 to the cooling plate 110 through the heat conducting member, thereby ensuring the heat exchange area between the cooling plate 110 and the battery cell 101, and facilitating to ensure that the heat of the battery cell 101 is taken away in time by the heat exchange medium.

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. The positive negative pole orientation of every battery cell 101 or set up to be convenient for carry out operations such as wiring, maintenance or change to battery cell 101 deviating from sealed lid, when needs maintain or change one or more in multirow battery cell 101, with sealed lid take off 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. Specifically, in some embodiments, the cooling plate 110 is fixed to the corresponding 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, the bottom wall of the first heat insulator 121 and the single cell 101 are arranged flush, and the cooling plate 110, the first heat insulator 121 and the single cell 101 are all glued to the bottom wall of the accommodating space. Specifically, the cooling plate 110, the first thermal insulator 121, and the bottom end of the unit cell 101 are fixed by gluing to the bottom wall of the receiving space to achieve 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 the heat transfer lateral wall's heat conduction and connect, can strengthen the inside structural stability of battery package and the heat transfer effect of cooling plate 110 and heat transfer lateral wall.

According to some embodiments of the present invention, the thickness L1 of the cooling plate 110 has a value range of 6mm or more and L1 or less and 8mm or less; 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 less than 8mm, and the thickness L2 of the heat-conducting glue is not less 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, 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.

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 adjacently disposed, 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. 6, a hollow-out area 111 is disposed on the cooling plate 110, the hollow-out area 111 is opposite to the single battery 101, and a third thermal insulation member (not shown) is disposed in the hollow-out 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 third heat insulation member is filled in the hollow-out region 111, and the hollow-out region 111 corresponds to a large-area middle area of the single battery 101, so that occurrence of a situation that the cooling plate 110 extrudes the battery when the battery expands can be effectively reduced.

In some embodiments, the first thermal insulation member 121, the second thermal insulation member 122, and the third thermal insulation member may be made of aerogel, which has a better buffering effect.

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 extends to be directly opposite to the top of the unit cell 101, thereby enhancing the heat exchange effect of the cooling plate 110 on 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 the range of 3mm ≦ A ≦ 15mm.

In some embodiments of the present invention, the battery pack includes a battery tray, a sealing cover forming a receiving space with the battery tray, and a plurality of rows of unit battery packs 100 disposed in the receiving space, wherein the plurality of rows of unit battery packs 100 are arranged in an array, and a cooling plate 110 or a first heat insulating member 121 is disposed at the unit battery packs 100 arranged in a row or a column.

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, the cooling plate 110 can be arranged along the length direction of the single battery 101 in an extending manner, so that the single battery 101 has certain rigid supporting force, the structural strength between the single battery 101 and the single battery 101 is further improved, and the purpose of ensuring the rigid strength of the battery tray to a certain extent even if the single battery packs 100 are placed in the battery tray without a cross beam is realized. 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 first thermal insulator 121 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 or a film, and is disposed on the cooling plate 110, and the insulating member 130 is also attached to two sides of the first heat insulating member 121, 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.

As shown in fig. 2, the insulating members 130 are attached to both sides of the first heat insulating member 121, and preferably, the insulating members 130 located at both sides of the first heat insulating member 121 are wrapped away from the first heat insulating member 121 toward the unit cell 101; 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 yet other embodiments, as shown in fig. 5, both sides of the cooling plate 110 are provided with the insulating member 130 and the second heat insulating member 122, respectively, which are sequentially stacked.

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 second thermal insulation members 122 and the insulation members 130 are stacked and disposed in the recessed grooves, as shown in fig. 5. 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 3mm or more and 15mm or less.

As shown in fig. 6, a hollow-out area 111 is formed on the cooling plate 110, the hollow-out area 111 is disposed along a thickness direction of the cooling plate 110, the third heat insulation member is filled in the hollow-out area 111, the insulation member 130 is attached to a side surface of the cooling plate 110 to close the hollow-out area 111, and the hollow-out area 111 corresponds to a middle area of a maximum surface of the single battery 101, which can effectively reduce a situation that the cooling plate 110 presses the battery when the battery expands, and preferably, an orthographic projection of a heat exchange sidewall of the single battery 101 is located in an attachment plane of the insulation 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: a vehicle body and a battery pack. 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 appearance of battery package expands to the ruptured condition of battery package inclusion when this vehicle uses, and the security performance of battery package is good.

To sum up, the utility model discloses a battery package sets up cooling plate 110 or first heat insulating part 121 in two adjacent rows of battery cell groups 100 department, can separate adjacent battery cell group 100's heat to first heat insulating part 121 stacks gradually with battery cell group 100 and makes first heat insulating part 121 block the heat transfer of two adjacent battery cell groups 100, thereby avoids leading to whole battery to take place unusually because single battery cell 101 is overheated under the poor condition of cooling plate 110 cooling effect, strengthens the operational reliability of battery package.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the 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 (13)

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;

multirow battery cell group (100), multirow battery cell group (100) are established in the accommodation space, every row battery cell group (100) include at least one battery cell (101), arbitrary adjacent two rows battery cell group (100) are equipped with cooling plate (110) or first heat insulating part (121) multirow battery cell group (100) direction of arranging, cooling plate (110) with first heat insulating part (121) arrange in turn, be equipped with the flow channel that is used for circulating heat transfer medium in cooling plate (110), cooling plate (110) and corresponding battery cell group (100) heat conduction are connected.

2. A battery pack according to claim 1, wherein an insulating member (130) is provided between the cooling plate (110) and the corresponding cell group (100), and between the first heat insulating member (121) and the corresponding cell group (100).

3. The battery pack according to claim 1, wherein a second thermal insulator (122) is provided between the cooling plate (110) and the corresponding unit battery pack (100).

4. The battery pack of claim 1, wherein each of the single batteries (101) has a plurality of sidewalls, the plurality of sidewalls includes two oppositely disposed heat exchanging sidewalls, the area of the heat exchanging sidewalls is larger than the area of the remaining sidewalls of the single battery (101), the cooling plate (110) is disposed opposite to the heat exchanging sidewalls and is in heat conduction connection with the heat exchanging sidewalls, and the first heat insulating member (121) is disposed opposite to the corresponding heat exchanging sidewalls.

5. The battery pack according to claim 4, wherein the cooling plate (110) is fixed to the respective unit battery (101); and/or

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

6. A battery pack according to claim 5, wherein the bottom wall of the cooling plate (110), the bottom wall of the first thermal insulator (121) and the battery cell (101) are arranged flush, and the cooling plate (110), the first thermal insulator (121) and the battery cell (101) are glued to the bottom wall of the receiving space.

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

8. The battery pack according to claim 7, wherein the thickness L1 of the cooling plate (110) ranges from 6mm ≦ L1 ≦ 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.

9. The battery pack according to claim 4, 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 unit batteries (101) in each row is parallel to the length direction of the heat exchange side wall.

10. 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.

11. 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 single battery (101), and a third thermal insulation member is disposed in the hollow-out area (111).

12. Battery pack according to any of claims 1-11, characterized in that the bottom wall of the cooling plate (110) is fixed to the bottom wall of the receiving space, the top of the cooling plate (110) extending beyond the top of the battery cell (101).

13. A vehicle, characterized by comprising:

a vehicle body;

a battery pack, according to any one of claims 1 to 12, said fixing portion is fixed to said vehicle body.

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