CN117996262A - Battery module assembly, battery pack and vehicle - Google Patents

Abstract

The embodiment of the invention provides a battery module assembly, a battery pack and a vehicle. The battery module assembly comprises a battery module, a tab and a first liquid cooling plate. The battery module comprises a plurality of electric cores which are arranged along a first direction, the number of the tabs is multiple, and each tab is connected to the pole of two adjacent electric cores to form a tab row; the first liquid cooling plate extends along the first direction, and the first liquid cooling plate is attached to the bar sheet row along a second direction perpendicular to the first direction. Therefore, the battery module assembly according to the embodiment of the invention has the advantage of improving the quick charge capability and the heat dissipation capability at the pole.

Description

Battery module assembly, battery pack and vehicle

Technical Field

The invention relates to the technical field of batteries, in particular to a battery module assembly, a battery pack with the battery module assembly and a vehicle.

Background

The power battery can generate heat in the charging process, and the larger the current passing through the battery core is, the larger the heat generation amount is, and the higher the corresponding risk of thermal runaway is. Especially for high power fast-charging power batteries. Currently, in order to shorten the charging time of a power battery, the fast charge current of the battery has been set to 600A or more at the highest, especially near the pole where charge and discharge play a key role. In the related art, the current power battery still adopts a mode that a liquid cooling plate is arranged at the bottom or the side part to control the temperature of the quick charging battery, but the mode has the problem that the heat dissipation effect at the top of the battery core is limited, so that the quick charging capacity of the battery module is poor.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems in the related art to some extent. To this end, an embodiment of the present invention proposes a battery module assembly. The battery module assembly has the advantage of improving the heat dissipation capacity of the pole.

The embodiment of the invention also provides a battery pack.

The embodiment of the invention also provides a vehicle.

The battery module comprises a plurality of electric cores which are arranged along a first direction, the number of the tabs is multiple, and each tab is connected to the pole of two adjacent electric cores to form a tab row; the first liquid cooling plate extends along the first direction, and the first liquid cooling plate is attached to the bar sheet row along a second direction perpendicular to the first direction.

According to the battery module assembly provided by the embodiment of the invention, the first liquid cooling plate is arranged on the tab connected to the pole, so that heat generated on the pole can be directly and timely and rapidly dissipated through the first liquid cooling plate, the integral cooling capacity of the liquid cooling assembly to the battery module is further improved, the risk of thermal runaway of the battery core due to overhigh local temperature caused by accumulation of heat near the pole is prevented, the battery module assembly is suitable for a quick-charging battery, and the quick-charging capacity and the use safety of the battery module are further improved.

Therefore, the battery module assembly of the embodiment of the invention has the advantages of improving the heat dissipation capacity at the pole, the quick charge capacity of the battery module and the use safety.

In some embodiments, the first liquid cooling plate includes a continuous liquid cooling portion attached to the blade row and a bridging edge that is attached to a shoulder of the battery cell.

In some embodiments, the tabs are welded, screwed, riveted, or glued to the poles of the battery module.

In some embodiments, a ratio between a length L1 of the pole and a length L3 of the battery module is 0.1 to 0.4 in a third direction perpendicular to the first direction and the second direction.

In some embodiments, a ratio between the width L2 of the pole and the width L4 of the battery module is 0.1 to 0.99 in the first direction.

In some embodiments, the ratio of the length of the tab to the length L1 of the post in a third direction perpendicular to the first and second directions is 0.1-5.

In some embodiments, the ratio of the length of the liquid cooling portion to the length of the tab is 0.1-2 in a third direction perpendicular to the first and second directions.

In some embodiments, the battery module assembly further includes a second liquid cooling plate, the second liquid cooling plate is configured to be disposed on the battery module, and the second liquid cooling plate is disposed opposite to the first liquid cooling plate.

In some embodiments, a first cooling flow channel is provided in the first liquid cooling plate, a second cooling flow channel is provided in the second liquid cooling plate, and each of the first cooling flow channel and the second cooling flow channel has a cooling medium for cooling the battery module.

In some embodiments, the battery module assembly further comprises a liquid inlet pipe and a liquid outlet pipe, wherein the liquid inlet pipe, the first liquid cooling plate, the liquid outlet pipe and the second liquid cooling plate are sequentially communicated.

In some embodiments, the second liquid cooling plate is provided with a heat exchange panel and a flow channel panel which are oppositely arranged along the first direction, the heat exchange panel and the flow channel panel form the second cooling flow channel, the attaching area of the heat exchange panel and the battery module is S1, the area of one side, connected with the heat exchange panel, of the battery module is S2, and the ratio of S1 to S2 is 0.1-1.

In some embodiments, in the first direction, the heat exchange panel has a thickness D1, and the second cooling flow passage has a dimension H1, 0.02.ltoreq.D1/H1.ltoreq.5; the thickness of the flow passage panel is D2, and the size of the second cooling flow passage is H1, D2/H1 is more than or equal to 0.02 and less than or equal to 5;

In some embodiments, in the first direction, a thickness of a side of the first liquid cooling plate connected with the bar is D3, and a size of the second cooling flow channel is H2, and D3/H2 is more than or equal to 0.02 and less than or equal to 2.

In some embodiments, the battery module assembly further comprises a thermally conductive layer between the first liquid cooling plate and the tabs.

The battery pack according to the embodiment of the invention includes a case and the battery module assembly according to any one of the above-described embodiments disposed in the case.

The vehicle of the embodiment of the invention includes the battery pack according to the above.

Drawings

Fig. 1 is a perspective view of a battery pack according to an embodiment of the present invention.

Fig. 2 is a perspective view of the first and second liquid cooling plates according to an embodiment of the present invention.

Fig. 3 is a perspective view of a first liquid cooling plate according to an embodiment of the present invention.

Fig. 4 is a perspective view of a second liquid cooling plate according to an embodiment of the present invention.

Fig. 5 is a front view of a battery module assembly according to an embodiment of the present invention.

Fig. 6 is a perspective view of a battery module assembly according to an embodiment of the present invention.

Fig. 7 is a front view of a battery module assembly according to another embodiment of the present invention.

Fig. 8 is a perspective view of a battery module assembly according to another embodiment of the present invention.

Fig. 9 is a perspective view of a battery module according to an embodiment of the present invention.

Fig. 10 is a perspective view illustrating the battery module and the tab according to the embodiment of the present invention.

Fig. 11 is a perspective view of another battery module according to an embodiment of the present invention.

Fig. 12 is a cross-sectional view of a second liquid cooling plate according to an embodiment of the present invention.

Fig. 13 is a cross-sectional view of a first liquid cooling plate according to an embodiment of the present invention.

Fig. 14 is a perspective view of a cell according to an embodiment of the present invention.

Reference numerals:

a battery pack 1000;

a battery module assembly 100; a housing 200;

a battery module 1; a cell 11; a pole 111; a shoulder 112;

a wafer 2;

a first liquid cooling plate 3; a liquid cooling section 31; a first cooling flow passage 311; a heat radiation surface 312;

Overlap edge 32;

a second liquid cooling plate 4; a second cooling flow passage 41; a heat exchange panel 42; a flow channel panel 43;

a liquid inlet pipe 51; a liquid outlet pipe 52.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.

The battery module assembly 100, the battery pack 1000, and the vehicle according to the embodiment of the invention are described below with reference to fig. 1 to 13.

The battery module assembly 100 of the embodiment of the invention includes a battery module 1, a tab 2, and a first liquid cooling plate 3.

The battery module 1 includes a plurality of battery cells 11 arranged in a first direction (e.g., left-right direction as shown in fig. 1), and the tabs 2 have a plurality, each of the tabs 2 being connected to the posts 111 of two adjacent battery cells 11 to form a tab row; the first liquid cooling plate 3 extends in a first direction, and the first liquid cooling plate 3 is attached to the bar in a second direction (for example, up-down direction shown in fig. 1) perpendicular to the first direction.

According to the battery module assembly 100 provided by the embodiment of the invention, the first liquid cooling plate 3 is arranged on the tab 2 connected to the pole 111, so that heat generated on the pole 111 can be directly and timely and rapidly dissipated through the first liquid cooling plate 3, the overall cooling capacity of the liquid cooling assembly to the battery module 1 is further improved, the battery cell temperature is prevented from being too high due to accumulation of heat at the pole 111, the charging current is limited, and the battery module assembly is suitable for a fast-charging battery, and further the fast-charging capacity and the use safety of the battery module 1 are improved.

Therefore, the battery module assembly 100 of the embodiment of the invention has the advantage of improving the heat dissipation capability and the fast charge capability at the pole 111.

Specifically, the tabs 2 may connect two adjacent cells 11 in the battery module 1 in series and/or in parallel. The pole 111 sets up at the top of electric core 11, and the bar piece 2 is connected on pole 111, and first liquid cooling board 3 sets up the upper surface at the bar piece 2.

As shown in fig. 7 to 8, the first liquid cooling plate 3 includes a liquid cooling portion 31 and a joint edge 32 connected, the liquid cooling portion 31 is attached to the bar, and the joint edge 32 is attached to the shoulder 112 of the cell 11.

According to the battery module assembly 100 of the embodiment of the invention, the first liquid cooling plate 3 is divided into the liquid cooling part 31 and the joint edge 32 which are connected, the liquid cooling part 31 is attached to the tab row, the joint edge 32 is attached to the shoulder 112 of the battery cell 11, and the joint edge 32 can radiate heat not only to the shoulder 112 of the battery cell 11, but also to the shoulder 112 of the battery cell 11 through the liquid cooling part 31, thereby being beneficial to reducing or even eliminating the temperature difference between the shoulder 112 of the battery cell 11 and the pole 111 (the joint edge 32 has the effect of uniform heating), and reducing the overall cooling capacity of the battery module 1. Thus, the battery module assembly 100 further improves the heat dissipation capability of the battery module 1.

Specifically, the battery module 1 includes a plurality of cells 11 arranged in the second direction, each cell 11 having a shoulder 112. When both the positive and negative electrode posts of the battery cell 11 are disposed on the top surface of the battery cell 11, and the positive and negative electrode posts are disposed near the middle of the battery cell 11, the shoulder portions 112 may be formed on both sides of the battery cell 11 in the third direction (for example, the front-rear direction shown in fig. 1), as shown in fig. 11. The positive and negative poles are disposed near the edge of the cell 11, and the shoulder 112 is formed between the explosion-proof valve and the positive pole of the cell 11 and between the explosion-proof valve and the negative pole of the cell 11. When the positive pole and the negative pole of the battery cell 11 are oppositely arranged at the top and the bottom of the battery cell 11. For example, the positive electrode posts are disposed in a central region of the top surface of the battery cell 11, and the shoulder 112 may be formed on both sides of the positive electrode posts of the battery cell 11 in the third direction, for example, the blade battery cell 11.

The tabs 2 may be welded, screwed, riveted, or adhered to the poles 111 of the battery module 1 by conductive adhesive. Thus, the battery module assembly 100 of the embodiment of the invention has the advantage of high connection convenience. For example, the tabs 2 connecting the battery cells to each other may be connected to the poles 111 of the battery cells 11 by a process such as riveting or laser welding, thereby realizing high-voltage series connection or parallel connection of the entire battery module 1.

Alternatively, the copper alloy bar 2 or the aluminum alloy bar 2 may be adopted as the bar 2, and the bar 2 is provided with a viewing hole. Further, the tab 2 may be formed by stamping, machining or casting.

Optionally, the tab 2 is connected with the first liquid cooling plate 3 through various heat conducting mediums such as heat conducting structural adhesive, heat conducting pads, heat conducting gel, heat conducting silicone grease, structural adhesive and the like.

Alternatively, the posts may be square and circular. The positive electrode post and the negative electrode post may be disposed on the same side of the battery module 1, or may be disposed opposite to each other.

In a third direction (for example, the front-rear direction shown in fig. 1, the third direction shown in fig. 6) perpendicular to the first and second directions, the ratio between the length L1 of the tab 111 and the length L3 of the battery module 1 is 0.1 to 0.4. Therefore, the problem that the ratio is too large (exceeding 0.40), the top surface of the battery cell 11 has insufficient area to accommodate the necessary electrical safety distance between the positive pole and the negative pole of the battery cell 11, and the safety is poor is avoided; and avoid the ratio too little, can lead to the area ratio that the top surface of electric core 11 and first liquid cooling board 3 laminate is little, and then lead to the top of electric core 11 at the poor problem of heat exchange efficiency. Therefore, the battery module assembly 100 has the advantages of good cooling effect and high structural strength.

Specifically, the positive electrode posts and the negative electrode posts of the battery cell 11 are both disposed on the same side of the battery cell 11, and may be 2 or more positive electrode posts+2 or more negative electrode posts.

In the first direction, as shown in fig. 14, the ratio between the width L2 of the tab 111 and the width L4 of the battery module 1 is 0.1 to 0.99. Therefore, the problem of poor cooling effect caused by too small ratio of the width L2 of the pole 111 to the width L4 of the battery module 1 is avoided, and the problem of mounting interference of the first liquid cooling plate 3 caused by too large ratio of the width L2 of the pole 111 to the width L4 of the battery module 1 is also avoided. Therefore, the battery module assembly 100 has the advantages of good cooling effect and high installation convenience.

In a third direction perpendicular to the first and second directions, the ratio of the length of the tab 2 to the length L1 of the post 111 is 0.1-5. Thus, the problem of mounting interference of the tabs 2 due to the fact that the ratio of the length of the tabs 2 to the length L1 of the pole 111 is too large is avoided; and the problem that the ratio is too small, so that the ratio of the joint surface of the tab 2 and the pole 111 is small, and the electric connection or the heat exchange efficiency of the battery core 11 is poor is avoided. Therefore, the battery module assembly 100 has the advantages of good cooling effect and high installation convenience.

The ratio of the length of the tab 2 to the length L1 of the post 111 is 1.5-5. That is, the length of the tab 2 is greater than the length of the post 111. Further, the tab 2 comprises a connecting lap portion, which overlaps the two poles 111 of the adjacent two cells 11, and an extension portion, which extends to the shoulder 112 of the cell 11.

In a third direction perpendicular to the first direction and the second direction, the ratio of the length of the liquid cooling portion 31 to the length of the patch 2 is 0.1 to 2. Thus, the problem of poor cooling effect caused by too small ratio of the length of the liquid cooling portion 31 to the length of the tab 2 is avoided. The advantage that the ratio of the length of the liquid cooling part 31 to the length of the bar sheet 2 is too large, so that the contact area of the liquid cooling part 31 and the bar sheet 2 is small, and the material waste at the liquid cooling part 31 is avoided. Further, the ratio of the length of the liquid cooling portion 31 to the length of the tabs 2 may be 1 so that the battery module assembly 100 achieves superior effects in terms of both cooling efficiency and manufacturing cost.

As shown in fig. 1 to 6, the battery module assembly 100 according to the embodiment of the invention further includes a second liquid cooling plate 4, where the second liquid cooling plate 4 is configured to be disposed on the battery module 1, and the second liquid cooling plate 4 is disposed opposite to the first liquid cooling plate 3. It is understood that the second liquid cooling plates 4 are disposed at both sides of the battery module 1 opposite to the first liquid cooling plates 3 in the up-down direction shown in fig. 1.

In the battery module assembly 100 according to the embodiment of the invention, the second liquid cooling plate 4 is provided on the side of the battery module 1 opposite to the first liquid cooling plate 3, so that the other side of the battery module 1 can be cooled. Thus, the battery module assembly 100 further improves the heat dissipation effect and the heat dissipation uniformity of the battery module 1.

As shown in fig. 12 and 13, a first cooling flow passage 311 is provided in the first liquid cooling plate 3, a second cooling flow passage 41 is provided in the second liquid cooling plate 4, and each of the first cooling flow passage 311 and the second cooling flow passage 41 has a cooling medium for cooling the battery module 1.

In the battery module assembly 100 according to the embodiment of the invention, the first cooling flow channel 311 is arranged in the first liquid cooling plate 3, and the second cooling flow channel 41 is arranged in the second liquid cooling plate 4, so that the flow path of the cooling medium is controlled, the flowing time of the cooling medium in the liquid cooling plates (the first liquid cooling plate 3 and the second liquid cooling plate 4) is prolonged, and the cooling effect of the liquid cooling plates is improved. Thus, the battery module assembly 100 improves the heat dissipation effect on the battery module 1.

Alternatively, the first liquid cooling plate 3 and the second liquid cooling plate 4 may be in the form of harmonica tubes, or may be press-brazed.

Further, as shown in fig. 1 to 4, the battery module assembly 100 according to the embodiment of the present invention further includes a first confluence member and a second confluence member, each of the first cooling flow path 311 and the second cooling flow path 41 includes a plurality of sub-paths extending in the second direction, the first confluence member is correspondingly disposed at both ends of the first liquid cooling plate 3 in the extending direction, and the second confluence member is correspondingly disposed at both ends of the second liquid cooling plate 4 in the extending direction.

According to the battery module assembly 100 of the embodiment of the invention, the first cooling flow channel 311 and the second cooling flow channel 41 respectively comprise a plurality of sub-channels extending along the second direction, so that the area covered by the cooling flow channels when flowing in the liquid cooling plate is enlarged, and the cooling effect of the liquid cooling plate on the battery module 1 is better improved. And can assemble through the cooling medium in the subchannel that first conflux piece and the second conflux piece that set up, need not all set up connecting tube to every subchannel, and then promoted the convenience of connection and laying.

As shown in fig. 1 to 4, the battery module assembly 100 according to the embodiment of the invention further includes a liquid inlet pipe 51 and a liquid outlet pipe 52, where the liquid inlet pipe 51, the first liquid cooling plate 3, the liquid outlet pipe 52 and the second liquid cooling plate 4 are sequentially connected.

According to the battery module assembly 100 provided by the embodiment of the invention, the first liquid cooling plate 3 and the second liquid cooling plate 4 are communicated through the liquid inlet pipe 51 and the liquid outlet pipe 52, so that circulation of internal cooling medium is realized, and further, the uniformity and the control convenience of cooling the battery module 1 are improved.

Alternatively, the number of the first liquid cooling plates 3 may be plural, and the first liquid cooling plates 3 may be connected in parallel or in series and then be communicated with the second liquid cooling plates 4. Further, the second liquid cooling plate 4 may be a plate structure with a liquid cavity, and the plate structure has a liquid outlet and a liquid inlet. The battery module 1 can have a plurality of battery cell rows that are the row setting, and every battery cell row can have two shoulders 112, all corresponds on every shoulder 112 to be equipped with first liquid cooling board 3, and a plurality of first liquid cooling boards 3 can be established ties or form one after parallelly connected and communicate with the second liquid cooling board 4 again.

As shown in fig. 12, the second liquid cooling plate 4 has a heat exchange panel 42 and a flow channel panel 43 which are disposed opposite to each other along the first direction, the heat exchange panel 42 and the flow channel panel 43 form a second cooling flow channel 41, the bonding area of the heat exchange panel 42 and the battery module 1 is S1, the area of the connection side of the battery module 1 and the heat exchange panel 42 is S2, and the ratio of S1 to S2 is 0.1-1. Therefore, the problem of poor cooling effect caused by small heat exchange area of the second liquid cooling plate 4 can be avoided, and the problem that the heat exchange panel 42 occupies the inner space of the battery pack 1000 excessively is also avoided.

As shown in fig. 12, in the first direction, the heat exchange panel 42 has a thickness D1, and the second cooling flow passage 41 has a size H1, 0.02.ltoreq.d1/h1.ltoreq.5; the thickness of the flow channel panel 43 is D2, and the size of the second cooling flow channel 41 is H1, and D2/H1 is more than or equal to 0.02 and less than or equal to 5. Therefore, the battery module assembly 100 not only avoids the problem of poor cooling effect caused by the fact that the heat exchange panel 42 and/or the flow channel panel 43 have excessive thickness and occupy the space of the second cooling flow channel 41, but also avoids the problem of weak structural strength caused by the fact that the heat exchange panel 42 and/or the flow channel panel 43 have too small thickness. Therefore, the battery module assembly 100 has the advantages of good cooling effect and high structural strength.

Alternatively, the heat exchange panel 42 may be a flat plate, and the flow channel panel 43 may be a corrugated structure plate. The heat exchange panel 42 and the flow channel panel 43 may be manufactured by stamping, brazing, and inflation to form the second liquid cooling plate 4, and the second liquid cooling plate 4 may be a harmonica pipe or an aluminum profile pipe.

Optionally, in order to ensure the connection strength between the second liquid cooling plate 4 and the battery module 1, the cooling effect between the second liquid cooling plate 4 and the battery module 1 is further improved, and heat conduction between the second liquid cooling plate 4 and the battery module 1 can be increased by various heat exchange mediums such as a heat conducting pad, a heat conducting adhesive, a structural adhesive, a double faced adhesive tape and the like.

In the first direction, the thickness of the side (heat radiation surface 312) of the first liquid cooling plate 3 connected to the tab 2 is D3, and the size of the first cooling flow passage 311 is H2, 0.02D 3/H2. Therefore, the battery module assembly 100 not only avoids the problem of poor cooling effect caused by the overlarge thickness of the first liquid cooling plate 3 occupying the space of the second cooling flow channel 41, but also avoids the problem of weak structural strength caused by the overlarge thickness of the first liquid cooling plate 3. Therefore, the battery module assembly 100 has the advantages of good cooling effect and high structural strength.

The battery pack 1000 of the embodiment of the present invention includes a heat conductive layer disposed between the first liquid cooling plate 3 and the tabs 2. Thus, the battery pack 1000 can further improve heat transfer efficiency between the tabs 2 and the first liquid cooling plate 3.

Further, the heat conducting layer can be a heat conducting pad, a heat conducting adhesive, a structural adhesive or a double sided adhesive.

The battery pack 1000 of the embodiment of the present invention may include the case 200 and the battery module assembly 100 according to any one of the above-described items disposed within the case 200.

Therefore, the battery pack 1000 of the embodiment of the invention has the advantages of good quick charge capability and improved heat dissipation capability.

The vehicle of the embodiment of the invention includes the battery pack 1000 according to any one of the above.

Therefore, the vehicle provided by the embodiment of the invention has the advantages of good quick charging capability and improved heat dissipation capability.

In the description of the present invention, it should 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", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

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

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular 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, schematic representations of the above terms are not necessarily directed 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, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.

Claims (10)

1. A battery module assembly, comprising:

The battery module comprises a plurality of electric cores which are arranged along a first direction;

The plurality of the tabs are connected to the poles of two adjacent electric cores to form a tab row;

A first liquid cooling plate extending along the first direction and attached to the array of tabs along a second direction perpendicular to the first direction.

2. The battery module assembly of claim 1, wherein the first liquid cooling plate comprises a liquid cooling portion and a bridging edge connected, the liquid cooling portion being attached to the tab row, the bridging edge being attached to a shoulder of the cell;

And/or the tabs are welded, screwed, riveted or bonded on the poles of the battery module by conductive adhesive.

3. The battery module assembly according to claim 2, wherein a ratio between a length L1 of the tab and a length L3 of the battery module in a third direction perpendicular to the first and second directions is 0.1 to 0.4;

and/or, in the first direction, a ratio between a width L2 of the pole and a width L4 of the battery module is 0.1 to 0.99;

And/or, in a third direction perpendicular to the first direction and the second direction, the ratio of the length of the tab to the length L1 of the pole is 0.1-5;

And/or, in a third direction perpendicular to the first direction and the second direction, the ratio of the length L5 of the liquid cooling part to the length L6 of the tab is 0.1-2.

4. The battery module assembly of claim 1, further comprising a second liquid cooling plate configured to be disposed on the battery module, and the second liquid cooling plate is disposed opposite the first liquid cooling plate.

5. The battery module assembly of claim 4, wherein a first cooling flow passage is provided in the first liquid cooling plate, a second cooling flow passage is provided in the second liquid cooling plate, and each of the first cooling flow passage and the second cooling flow passage has a cooling medium for cooling the battery module.

6. The battery module assembly of claim 5, further comprising a liquid inlet tube and a liquid outlet tube, wherein the liquid inlet tube, the first liquid cooling plate, the liquid outlet tube, and the second liquid cooling plate are in communication in sequence.

7. The battery module assembly according to claim 5, wherein the second liquid cooling plate is provided with a heat exchange panel and a flow passage panel which are oppositely arranged along the first direction, the heat exchange panel and the flow passage panel form the second cooling flow passage, the attaching area of the heat exchange panel and the battery module is S1, the area of the connecting side of the battery module and the heat exchange panel is S2, and the ratio of S1 to S2 is 0.1-1;

And/or, in the first direction, the thickness of the heat exchange panel is D1, and the size of the second cooling flow passage is H1, and D1/H1 is more than or equal to 0.02 and less than or equal to 5; the thickness of the flow passage panel is D2, and the size of the second cooling flow passage is H1, D2/H1 is more than or equal to 0.02 and less than or equal to 5;

And/or in the first direction, the thickness of one side, connected with the tabs, of the first liquid cooling plate is D3, and the size of the second cooling flow passage is H2, and D3/H2 is more than or equal to 0.02 and less than or equal to 2.

8. The battery module assembly according to claim 1, wherein,

The heat conducting layer is arranged between the first liquid cooling plate and the tabs.

9. A battery pack comprising a case and the battery module assembly according to any one of claims 1 to 8 disposed within the case.

10. A vehicle comprising the battery pack according to claim 9.