CN211980720U

CN211980720U - Battery module, battery pack and vehicle

Info

Publication number: CN211980720U
Application number: CN202020942916.XU
Authority: CN
Inventors: 王珏; 张海建; 王稳; 陈森; 高顺航; 孙新乐
Original assignee: Svolt Energy Technology Co Ltd
Current assignee: Svolt Energy Technology Co Ltd
Priority date: 2020-05-28
Filing date: 2020-05-28
Publication date: 2020-11-20
Anticipated expiration: 2030-05-28

Abstract

The utility model discloses a battery module, battery package and vehicle, the battery module includes: first module and second module, liquid cooling plate, first module includes: a plurality of first electric cores that pile up in proper order, the second module includes: the electrode posts of the first battery cells and the electrode posts of the second battery cells are positioned at one ends deviating from each other; the liquid cooling plate is arranged between the first module and the second module. Therefore, on one hand, the liquid cooling plate is arranged between the first module and the second module, so that the quantity of the liquid cooling plates in the battery module can be reduced on the premise of meeting the cooling requirement of the battery module, the space occupation of the battery core in the battery module is improved, and the energy density of the battery module is improved; on the other hand, make the utmost point post of first module and the utmost point post of second module deviate from each other to make two utmost point posts all separate with the liquid cooling inter-plate, can improve battery module's safety in utilization and job stabilization nature.

Description

Battery module, battery pack and vehicle

Technical Field

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

Background

In the related technology, with the vigorous popularization of the new energy field in China, the electric vehicle has become the mainstream trend in the future, the key of the design of the electric vehicle is that the three-electricity technology comprises a battery, a motor and an electric control, wherein a battery pack is used as a power supply component which is the most core of the whole vehicle, and the key indexes of the whole vehicle, such as the driving range, the cost, the service life, the safety and the like, are determined. With the trend of increasing the energy density, the size of the module is particularly significant, and how to further increase the volumetric energy efficiency is also a major issue.

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 utility model is to provide a battery module, battery module's energy density is higher, the safety in utilization is higher, the radiating effect is better.

The utility model further provides a battery package, the battery package adopts above-mentioned battery module.

The utility model also provides a vehicle, the vehicle adopts above-mentioned battery package.

According to the utility model discloses battery module of first aspect embodiment includes: first module and second module, liquid cooling plate, first module includes: a plurality of first electric cores that pile up in proper order, the second module includes: the electrode posts of the first battery cells and the electrode posts of the second battery cells are positioned at one ends deviating from each other; the liquid cooling plate is arranged between the first module and the second module.

According to the battery module of the embodiment of the utility model, on one hand, by arranging the liquid cooling plate between the first module and the second module and cooling the first module and the second module simultaneously, on the premise of meeting the cooling requirement of the battery module, the quantity of the liquid cooling plates inside the battery module can be reduced to improve the space occupation of the battery cell in the battery module, thereby improving the energy density of the battery module; on the other hand, make the utmost point post of first module and the utmost point post of second module deviate from each other to make two utmost point posts all separate with the liquid cooling inter-plate, can improve battery module's safety in utilization and job stabilization nature.

According to some embodiments of the invention, the first module comprises: two first end plates spaced apart in a stacking direction and a first middle end plate disposed between the two first end plates, a plurality of the first cells being disposed between each of the first end plates and the first middle end plate; the second module includes: two second end plates spaced apart in the stacking direction and a second middle end plate disposed between the two second end plates, a plurality of the second cells being disposed between each of the second end plates and the second middle end plate; wherein first middle part end plate with second middle part end plate, be located homonymy one end first end plate with the second end plate all is fixed through the connecting plate.

In some embodiments, the connection plate comprises: the first connecting plate is connected with the first end plate and the second end plate at one end of the same side, and the second connecting plate is connected with the first middle end plate and the second middle end plate; the homonymy first end plate with all be provided with on the second end plate and hold the first counter bore of first connecting plate, first middle part end plate with all be provided with on the second middle part end plate and hold the second counter bore of second connecting plate.

Further, the first connection plate includes: a first upper connecting plate and a first lower connecting plate, the first counterbore comprising: the first upper counter bore and the first lower counter bore are arranged on the upper side and the lower side of the first end plate and the second end plate which are arranged on the same side, the first upper connecting plate extends into the first upper counter bore of the first end plate and the first upper counter bore of the second end plate which are arranged on the same side and is fixedly connected with the first end plate and the second end plate which are arranged on the same side, and the first lower connecting plate extends into the first lower counter bore of the first end plate and the first lower counter bore of the second end plate which are arranged on the same side and is fixedly connected with the first end plate and the second end plate which are arranged on the same side; the second connecting plate includes: second upper junction plate and second lower junction plate, the second counter bore includes: the setting is in counter bore and counter bore under the second on the upside and the downside second of first middle part end plate with second middle part end plate, the second upper junction plate stretches into first middle part end plate with second middle part end plate in the counter bore and with first middle part end plate with second middle part end plate fixed connection, the connecting plate stretches into under the second first middle part end plate with the second middle part end plate in the second counter bore and with first middle part end plate with second middle part end plate fixed connection.

According to some embodiments of the invention, the first module further comprises: first busbar, it is a plurality of the utmost point post of first electric core is connected through first busbar electricity, the second module still includes: and the polar columns of the plurality of second battery cells are electrically connected through the second busbar.

Furthermore, one side, far away from the first connecting plate, of the first end plate is provided with a first avoidance part, one side, far away from the first connecting plate, of the second end plate is provided with a second avoidance part, a first high-pressure output part is arranged in the first avoidance part, and a second high-pressure output part is arranged in the second avoidance part.

Further, the first end plate and the first battery cell are fixed through a first side plate located above the first module, a second side plate located below the first module, and a first outer cover located outside the first bus bar, and the second end plate and the second battery cell are fixed through a third side plate located above the second module, a fourth side plate located below the second module, and a second outer cover located outside the second bus bar.

According to the utility model discloses battery package of second aspect embodiment includes: a battery module; a housing, the housing comprising: go up casing and lower casing, go up the casing with accommodation space is injectd to the casing down, the battery module is a plurality of, and is a plurality of the battery module piles up in proper order in the casing.

Further, first end plate, second end plate, first middle part end plate, the second middle part end plate of battery module all pass through the fastener and lower casing fixed, adjacent two the first middle part end plate and the second middle part end plate of battery module pass through the third connecting plate fixedly.

According to the utility model discloses vehicle of third aspect embodiment includes: the battery pack described in the above embodiments.

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

Drawings

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

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

fig. 2 is another schematic view of a battery module according to an embodiment of the present invention;

fig. 3 is a schematic view of a first module of the battery modules according to an embodiment of the present invention;

fig. 4 is a schematic view of a battery pack according to an embodiment of the present invention;

fig. 5 is another schematic view of a battery pack according to an embodiment of the present invention (upper case not shown);

fig. 6 is a schematic cross-sectional view of line a-a of fig. 5.

Reference numerals:

the battery pack 1000 is provided with a battery pack,

the assembly of the battery module 100, the case 200,

a first module 10, a first battery cell 11, a first end plate 12, a first avoiding part 121, a first middle end plate 13, a first side plate 14, a second side plate 15, a first outer cover 16, a first bus bar 17,

a second module 20, a second battery cell 21, a second end plate 22, a second avoiding part 221, a second middle end plate 23, a third side plate 24, a fourth side plate 25, a second outer cover 26,

a liquid cooling plate 30, a first connecting plate 41, a second connecting plate 42, a third connecting plate 43,

an upper case 210 and a lower case 220.

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.

The battery module 100, the battery pack 1000, and the vehicle according to the embodiment of the present invention are described below with reference to fig. 1 to 6.

As shown in fig. 1 and 2, a battery module 100 according to an embodiment of the first aspect of the present invention includes: a first module 10 and a second module 20, a liquid cooling plate 30.

Wherein, the first module 10 includes: a plurality of first electric cores 11 that stack gradually, second module 20 includes: a plurality of second cells 21 stacked in sequence, wherein the terminal of the first cell 11 and the terminal of the second cell 21 are both located at ends away from each other; the liquid cooling plate 30 is disposed between the first module 10 and the second module 20.

Specifically, be provided with liquid cooling plate 30 between first module 10 and the second module 20, liquid cooling plate 30 can dispel the heat to a plurality of first electric cores 11 of first module 10 and a plurality of second electric cores 21 of second module 20 simultaneously, and the utmost point post of first electric core 11 and the utmost point post of second electric core 21 all set up the one end that deviates from each other simultaneously to make the utmost point post of first electric core 11, the utmost point post of second electric core 21 all spaced apart with liquid cooling plate 30.

According to the embodiment of the present invention, on one hand, by arranging the liquid cooling plate 30 between the first module 10 and the second module 20 and cooling the first module 10 and the second module 20 at the same time, the number of the liquid cooling plates 30 inside the battery module 100 can be reduced on the premise of satisfying the cooling requirement of the battery module 100, so as to improve the space occupation of the battery core in the battery module 100, thereby improving the energy density of the battery module 100; on the other hand, the pole of the first module 10 and the pole of the second module 20 are deviated from each other, so that the two poles are spaced apart from the liquid cooling plate 30, and the use safety and the working stability of the battery module 100 can be improved.

According to some embodiments of the present invention, the first module 10 comprises: two first end plates 12 spaced apart in the stacking direction and a first middle end plate 13 disposed between the two first end plates 12, a plurality of first cells 11 being disposed between each first end plate 12 and the first middle end plate 13; the second module 20 includes: two second end plates 22 spaced apart in the stacking direction and a second middle end plate 23 disposed between the two second end plates 22, a plurality of second cells 21 being disposed between each second end plate 22 and the second middle end plate 23; wherein the first middle end plate 13 and the second middle end plate 23, and the first end plate 12 and the second end plate 22 at the same side end are fixed by connecting plates.

As shown in fig. 5 and 6, in some embodiments, the connection plate includes: a first connecting plate 41 connecting the first end plate 12 and the second end plate 22 at the same side end and a second connecting plate 42 connecting the first middle end plate 13 and the second middle end plate 23; the first end plate 12 and the second end plate 22 on the same side are both provided with a first counter bore for accommodating the first connecting plate 41, and the first middle end plate 13 and the second middle end plate 23 are both provided with a second counter bore for accommodating the second connecting plate 42.

Specifically, a first counter bore of the first end plate 12 located at one end of the same side is communicated with a first counter bore on the second end plate 22, the first connecting plate 41 extends into the first counter bore, N connecting holes are formed in the first connecting plate 41, N/2 connecting holes are opposite to fixing holes in the first end plate 12 and are fixed through fasteners, and in addition, N/2 connecting holes are opposite to fixing holes in the second end plate 22 and are fixed through fasteners.

Similarly, the second counter bores on the first middle end plate 13 and the second middle end plate 23 are communicated, the second connecting plate 42 extends into the second counter bores, the second connecting plate 42 is also provided with N connecting holes, wherein N/2 connecting holes are opposite to the fixing holes on the first middle end plate 13 and are fixed through fasteners, and in addition, N/2 connecting holes are opposite to the fixing holes on the second middle end plate 23 and are fixed through fasteners.

Like this, under the prerequisite that improves the joint strength between first module 10 and the second module 20, make first connecting plate 41 stretch into in the first counter sink, in second connecting plate 42 stretches into the second counter sink, can avoid the head of the fastener on first connecting plate 41 and the fastener on second connecting plate 42 to bulge battery module 100's upper surface, can reduce battery module 100 effectively and occupy in the space of direction of height.

As shown in fig. 2 and 6, the first connection plate 41 includes: first upper junction plate and first lower junction plate, first counter bore includes: the first upper counter bore and the first lower counter bore are arranged at the upper side and the lower side of the first end plate 12 and the second end plate 22 at the same side, the first upper connecting plate extends into the first upper counter bore of the first end plate 12 and the second end plate 22 at the same side and is fixedly connected with the first end plate 12 and the second end plate 22 at the same side, and the first lower connecting plate extends into the first lower counter bore of the first end plate 12 and the second end plate 22 at the same side and is fixedly connected with the first end plate 12 and the second end plate 22 at the same side;

the second connecting plate 42 includes: second upper junction plate and second lower junction plate, the second counter bore includes: the setting is in counter bore and counter bore under the upside and the downside second of first middle part end plate 13 and second middle part end plate 23, and the second upper junction plate stretches into in the counter bore and with first middle part end plate 13 and second middle part end plate 23 fixed connection on the second of first middle part end plate 13 and second middle part end plate 23, and the second is down the connecting plate stretch into in the counter bore and with first middle part end plate 13 and second middle part end plate 23 fixed connection under the second of first middle part end plate and second middle part end plate.

Thus, the first end plate 12 and the second end plate 22 are fixed above and below by the first upper connecting plate and the first lower connecting plate, respectively; the first middle end plate 13 and the second middle end plate 23 are fixed above and below through the second upper connecting plate and the second lower connecting plate, so that the connection between the first module 10 and the second module 20 is firmer and more reliable, and the structural strength of the battery module 100 is improved.

As shown in fig. 3, according to some embodiments of the present invention, the first module 10 further includes: first busbar 17, the utmost point post of a plurality of first electric cores 11 is connected through first busbar 17 electricity, and second module 20 still includes: and a second bus bar through which the poles of the plurality of second cells 21 are electrically connected.

A first avoiding portion 121 is arranged on one side, away from the first connecting plate 41, of the first end plate 12, a second avoiding portion 221 is arranged on one side, away from the first connecting plate 41, of the second end plate 22, a first high-pressure output member is arranged in the first avoiding portion 121, and a second high-pressure output member is arranged in the second avoiding portion 221.

Therefore, on one hand, the first avoidance part 121 is arranged on the first end plate 12, and the second avoidance part 221 is arranged on the second end plate 22, so that the arrangement of the first high-voltage output member on the first module 10 and the arrangement of the second high-voltage output member on the second module 20 are simpler and more convenient; on the other hand, the first and second high voltage outputs are spaced apart from the liquid cooling plate 30, so as to further improve the safety of the battery module 100.

In the specific embodiment shown in fig. 3, the first end plate 12 and the first battery cell 11 are fixed by the first side plate 14 located above the first module 10, the second side plate 15 located below the first module 10, and the first outer cover 16 located outside the first bus bar 17, and the second end plate 22 and the second battery cell 21 are fixed by the third side plate 24 located above the second module 20, the fourth side plate 25 located below the second module 20, and the second outer cover 26 located outside the second bus bar.

In this way, the first side plate 14, the second side plate 15 and the first outer cover 16 make the structural strength of the first module 10 higher, and the fixing of the plurality of first battery cells 11 is more stable; make the structural strength of second module 20 higher through third curb plate 24, fourth curb plate 25 and second enclosing cover 26, a plurality of second batteries 21's fixed is more stable to make the holistic structural strength of battery module 100 higher.

Here, it should be noted that fig. 3 shows a schematic diagram of the first module 10 being disassembled, and the structure of the second module 20 is the same as that of the first module 10, which is not described herein again.

As shown in fig. 4, a battery pack 1000 according to an embodiment of the present invention includes: a battery module 100; a housing 200, the housing 200 comprising: the upper case 210 and the lower case 220, the upper case 210 and the lower case 220 defining a receiving space, the battery module 100 being in plurality, and the plurality of battery modules 100 being sequentially stacked in the case 200.

According to the utility model discloses battery package 1000 adopts above-mentioned battery module 100, makes battery package 1000's structure more reasonable, need not to set up the structure roof beam in the battery package 1000, has increased battery package 1000's inner space, can hold more battery modules 100, makes battery package 1000's energy density higher.

As shown in fig. 5 and 6, the first end plate 12, the second end plate 22, the first middle end plate 13, and the second middle end plate 23 of the battery module 100 are fixed to the lower case 220 by fasteners, and the first middle end plate 13 and the second middle end plate 23 of two adjacent battery modules 100 are fixed by the third connecting plate 43. Thus, the battery module 100 is more stably and reliably fixed to the lower case 220.

It is understood that the first end plate 12, the second end plate 22, the first middle end plate 13, and the second middle end plate 23 are fixed to the lower case 220 by long bolts, and the connection plates are fixed to the corresponding end plates by short bolts.

According to the utility model discloses vehicle of third aspect embodiment includes: the battery pack 1000 in the above embodiment.

According to the utility model discloses vehicle adopts above-mentioned battery package 1000, and the technological effect that has is unanimous with above-mentioned battery package 1000, no longer gives unnecessary details here.

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", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and 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.

In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features.

In the description of the present invention, "a plurality" means two or more.

In the description of the present invention, the first feature "on" or "under" the second feature may include the first and second features being in direct contact, and may also include the first and second features being in contact with each other not directly but through another feature therebetween.

In the description of the invention, the first feature being "on", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature.

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

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

Claims

1. A battery module (100), comprising:

a first module (10) and a second module (20), the first module (10) comprising: a plurality of first electric cores (11) that stack gradually, second module (20) includes: a plurality of second cells (21) stacked in sequence, the poles of the first cells (11) and the poles of the second cells (21) being located at ends facing away from each other;

a liquid-cooled plate (30), the liquid-cooled plate (30) being disposed between the first module (10) and the second module (20).

2. The battery module (100) according to claim 1,

the first module (10) comprises: two first end plates (12) spaced apart in the stacking direction and a first middle end plate (13) arranged between the two first end plates (12), a plurality of the first cells (11) being arranged between each of the first end plates (12) and the first middle end plate (13);

the second module (20) comprises: two second end plates (22) spaced apart in the stacking direction and a second middle end plate (23) disposed between the two second end plates (22), a plurality of the second cells (21) being disposed between each of the second end plates (22) and the second middle end plate (23); wherein

The first middle end plate (13) and the second middle end plate (23) are positioned at one end of the same side, and the first end plate (12) and the second end plate (22) are fixed through connecting plates.

3. The battery module (100) according to claim 2, wherein the connection plate comprises: a first connecting plate (41) connecting the first end plate (12) and the second end plate (22) at one end of the same side, and a second connecting plate (42) connecting the first middle end plate (13) and the second middle end plate (23);

the first end plate (12) of homonymy with all be provided with on second end plate (22) and hold the first counter bore of first connecting plate (41), first middle part end plate (13) with all be provided with on second middle part end plate (23) and hold the second counter bore of second connecting plate (42).

4. The battery module (100) according to claim 3,

the first connection plate (41) includes: a first upper connecting plate and a first lower connecting plate, the first counterbore comprising: the first upper counter bore and the first lower counter bore are arranged at the upper side and the lower side of the first end plate (12) and the second end plate (22) at the same side, the first upper connecting plate extends into the first upper counter bore of the first end plate (12) and the second end plate (22) at the same side and is fixedly connected with the first end plate (12) and the second end plate (22) at the same side, and the first lower connecting plate extends into the first lower counter bore of the first end plate (12) and the second end plate (22) at the same side and is fixedly connected with the first end plate (12) and the second end plate (22) at the same side;

the second connecting plate (42) comprises: second upper junction plate and second lower junction plate, the second counter bore includes: set up first middle part end plate (13) with counter bore and counter bore under second on upside and the downside second of second middle part end plate (23), the second upper junction plate stretch into first middle part end plate (13) with second middle part end plate (23) in the counter bore and with first middle part end plate (13) with second middle part end plate (23) fixed connection, the second lower junction plate stretch into first middle part end plate (13) with second middle part end plate (23) in the second counter bore and with first middle part end plate (13) with second middle part end plate (23) fixed connection.

5. The battery module (100) according to claim 3, wherein the first module (10) further comprises: a first busbar (17), the poles of a plurality of said first cells (11) being electrically connected by the first busbar (17), said second module (20) further comprising: and the poles of the plurality of second battery cells (21) are electrically connected through the second bus bar.

6. The battery module (100) according to claim 5, wherein a first escape portion (121) is provided on a side of the first end plate (12) away from the first connecting plate (41), a second escape portion (221) is provided on a side of the second end plate (22) away from the first connecting plate (41), a first high-voltage output member is provided in the first escape portion (121), and a second high-voltage output member is provided in the second escape portion (221).

7. The battery module (100) according to claim 5, wherein the first end plate (12) and the first battery cell (11) are fixed by a first side plate (14) located above the first module (10), a second side plate (15) located below the first module (10), and a first outer cover (16) located outside the first bus bar (17), and the second end plate (22) and the second battery cell (21) are fixed by a third side plate (24) located above the second module (20), a fourth side plate (25) located below the second module (20), and a second outer cover (26) located outside the second bus bar.

8. A battery pack (1000), comprising:

the battery module (100) according to any one of claims 1 to 7;

a housing (200), the housing (200) comprising: the battery pack comprises an upper shell (210) and a lower shell (220), wherein the upper shell (210) and the lower shell (220) define a containing space, the battery modules (100) are multiple, and the battery modules (100) are sequentially stacked in the shell (200).

9. The battery pack (1000) according to claim 8, wherein the first end plate (12), the second end plate (22), the first middle end plate (13), and the second middle end plate (23) of the battery module (100) are fixed to the lower case (220) by fasteners, and the first middle end plate (13) and the second middle end plate (23) of two adjacent battery modules (100) are fixed by a third connecting plate (43).

10. A vehicle, characterized by comprising: the battery pack (1000) of any of claims 8-9.