CN219959144U - Battery module and battery box - Google Patents

Abstract

The utility model relates to the technical field of batteries, and discloses a battery module and a battery box. The battery box includes box and battery module, the battery module includes a plurality of electric cores, a plurality of liquid cooling board and two supporting component, a plurality of electric cores are arranged along first direction and are two at least rows of electric core rows, electric core row extends along the second direction and includes a plurality of electric core, be provided with the liquid cooling board between two adjacent electric core rows, be provided with the liquid cooling passageway in the liquid cooling board, be provided with the chamber that converges in the supporting component, the chamber that converges passes through liquid port and outside intercommunication, every liquid cooling board supports respectively on two supporting component along the both ends of second direction, and the both ends of liquid cooling passageway are linked together with the chamber that converges of corresponding end respectively. According to the battery module and the battery box, the liquid cooling plate can fully contact with the battery core for heat exchange, the heat dissipation efficiency is high, the supporting component can support the liquid cooling plate and can converge channels in a plurality of liquid cooling plates, and the battery module is simple in structure and easy to assemble.

Description

Battery module and battery box

Technical Field

The utility model relates to the technical field of batteries, in particular to a battery module and a battery box.

Background

The square battery box is used as a power source and widely applied to the field of vehicles such as automobiles, ships and the like. The battery box is generally provided with a box body, electric cores and liquid cooling plates which are arranged in an array mode, and the electric cores and the liquid cooling plates are all installed in the box body. In the related art, the liquid cooling plates are respectively arranged at the top and the bottom of the battery cell, so that the battery cell is cooled. However, in the arrangement mode, on one hand, the liquid cooling plate cannot sufficiently contact with the battery cell for heat exchange, and the heat dissipation efficiency of the battery box is low; on the other hand, the supporting structure of the liquid cooling plate and the water inlet and outlet part at the end part of the liquid cooling plate have complex structures, so that the assembly efficiency of the battery box is low, and the manufacturing cost of the battery box is high.

Therefore, there is a need for a battery module and a battery case to solve the above-mentioned problems.

Disclosure of Invention

The utility model aims to provide a battery module and a battery box, wherein a liquid cooling plate can fully contact with a battery core for heat exchange, the heat dissipation efficiency is high, a support assembly can support the liquid cooling plate and can converge channels in a plurality of liquid cooling plates, and the battery module is simple in structure and easy to assemble.

To achieve the purpose, the utility model adopts the following technical scheme:

a battery module, comprising:

the battery cells are arranged into at least two rows of battery cell rows along a first direction, and the battery cell rows extend along a second direction;

the liquid cooling plates are arranged between two adjacent rows of the battery cell rows, and liquid cooling channels are arranged in the liquid cooling plates;

the liquid cooling device comprises two support assemblies, wherein a converging cavity is arranged in each support assembly, the converging cavity is communicated with the outside through a liquid passing port, each liquid cooling plate is supported on the two support assemblies respectively at two ends of the second direction, and two ends of the liquid cooling channel are communicated with the converging cavity at the corresponding end respectively.

As an alternative scheme, the supporting component includes lower supporting seat and last supporting seat, go up the supporting seat lock in lower supporting seat is in order to form converging chamber and a plurality of installation slot, the installation slot is located the supporting component orientation the one side of liquid cooling board, and with converging the chamber and be linked together, every the tip of liquid cooling board corresponds the grafting in one the installation slot.

As an alternative, the support assembly further includes:

the first sealing piece comprises a first sealing part and a second sealing part, the first sealing part is clamped between the upper supporting seat and the lower supporting seat and is annularly arranged in the converging cavity, and the second sealing part is clamped between the side wall of the mounting slot and the side wall of the liquid cooling plate; and/or

The second sealing piece is clamped between the side wall of the mounting slot and the side wall of the liquid cooling plate.

As an alternative scheme, the side of the lower supporting seat facing the upper supporting seat is provided with a first half cavity and a plurality of first half grooves, the side of the upper supporting seat facing the lower supporting seat is provided with a second half cavity and a plurality of second half grooves, the first half cavity and the second half cavity form the converging cavity, and each second half groove corresponds to one first half groove to form one mounting slot.

As an alternative, the supporting component is formed with a stop end surface, the stop end surface is perpendicular to the second direction, and the end surface of the battery cell row perpendicular to the second direction abuts against the stop end surface of the supporting component at the corresponding end.

As an alternative, the liquid cooling plate includes:

the main body part is arranged between two adjacent rows of the battery cell rows;

the two bearing parts are connected to the lower end of the main body part and extend to the two sides of the main body part respectively, so that the two adjacent battery cell rows are in a 'structure' with the main body part, and the adjacent battery cell rows are respectively supported on the corresponding bearing parts.

As an alternative, the two ends of the main body along the second direction are respectively protruded out of the bearing part to respectively form inserting ends, and the inserting ends are respectively protruded out of the two ends of the battery cell row along the second direction and are respectively inserted into the supporting components at the corresponding ends.

As an alternative scheme, a heat conducting glue layer is arranged between the main body part and the electric cores at two sides of the main body part, and the main body part and the electric cores are connected in an adhesive mode through the heat conducting glue layer.

As an alternative scheme, the battery module further includes two opposite side plates, the side plates are perpendicular to the first direction, at least two rows of the battery cells are arranged between the two side plates in a clamped mode, and two ends of the side plates along the second direction are respectively supported on the two supporting components.

As an alternative, the side plate includes:

the body part is adhered to the battery cell row;

and the bearing plate is connected to the lower end of the body part, extends towards one side close to the battery cell row along the first direction, and is used for bearing the battery cell row.

As an alternative, the side plate further includes:

the mounting parts are respectively arranged at two ends of the body part and are connected with the supporting components at the corresponding ends; and/or

And the connecting convex part is arranged on one side of the body part, which is away from the battery cell row, and is configured to be connected with a box body of the battery box.

As an alternative scheme, the electric core is square electric core, the electric core has a group of biggest sides that set up relatively and area is biggest, biggest side with corresponding the laminating of liquid cooling board is set up.

A battery box comprises a box body and a battery module, wherein the battery module is arranged in the box body.

As an alternative, a glue layer is filled between the bottom of the battery module and the bottom of the case.

The utility model has the beneficial effects that:

according to the battery module, the liquid cooling plates are arranged between two adjacent rows of battery core rows, so that the liquid cooling plates can fully contact with each battery core for heat exchange, and the heat dissipation efficiency is improved; the two supporting components cooperate to support the plurality of liquid cooling plates, and the converging cavity in the supporting components can converge liquid cooling channels in the multi-dry liquid cooling plates, so that one liquid passing port is used as a liquid inlet, the other liquid passing port is used as a liquid outlet to realize the supply of cooling liquid in the plurality of liquid cooling plates, and the battery module is simple in structure, convenient to assemble and capable of reducing the manufacturing cost of the battery module.

According to the battery box, the battery module is arranged, so that the heat dissipation efficiency is high, the structure is simple, and the cost is low.

Drawings

Fig. 1 is a schematic structural view of a battery box according to an embodiment of the present utility model;

fig. 2 is an exploded view of a battery case according to an embodiment of the present utility model;

fig. 3 is an exploded view of a part of the structure of a battery module according to an embodiment of the present utility model;

fig. 4 is a schematic structural diagram of a battery cell row and a liquid cooling plate according to an embodiment of the present utility model;

FIG. 5 is a left side view of a battery cell array and a liquid cooling plate according to an embodiment of the present utility model;

fig. 6 is a partial schematic structure of a battery module according to an embodiment of the present utility model;

FIG. 7 is an exploded view of a support assembly provided in accordance with an embodiment of the present utility model;

fig. 8 is a schematic view illustrating an exploded structure of a battery module according to an embodiment of the present utility model;

fig. 9 is a schematic cross-sectional view of a battery box according to an embodiment of the present utility model.

In the figure:

10. a battery module;

1. a cell row; 11. a battery cell; 111. maximum side;

2. a liquid cooling plate; 21. a main body portion; 211. a liquid cooling channel; 212. a plug end; 22. a support part;

3. a support assembly; 31. a lower support base; 311. a first half-groove; 312. a first half cavity; 313. a first stop surface; 314. a first mounting hole; 315. a sixth mounting hole; 32. an upper support base; 321. a second half-groove; 322. a second stop surface; 324. a second mounting hole; 325. a fourth mounting hole; 326. a fifth mounting hole; 33. a confluence chamber; 34. installing a slot; 35. a first seal; 351. a first sealing part; 352. a second sealing part; 36. a second seal; 37. a stop end surface; 38. a liquid passing port;

4. a heat conducting adhesive layer;

5. a side plate; 51. a body portion; 52. a mounting part; 521. a third mounting hole; 53. a connection protrusion; 531. a seventh mounting hole; 54. a bearing plate;

20. a case; 201. a boss; 202. a threaded hole;

30. and a glue layer.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

The present embodiment provides a battery module and a battery box, as shown in fig. 1, the battery box includes a battery module 10 and a box 20, and the battery module 10 is installed in the box 20. In this embodiment, the upper end of the case 20 is opened, and the battery module 10 can be placed in the case 20 from the opening. The battery case further includes a cover (not shown) that can close the opening of the case 20. In the present embodiment, a case 20 of a battery case is described as an example in which one battery module 10 is accommodated. It is understood that in other embodiments, two or more battery modules 10 may be accommodated in the case 20. For convenience of description, the first direction, the second direction and the third direction are defined as three directions perpendicular to each other in space, wherein in fig. 2, the X direction indicates the first direction, the Y direction indicates the second direction, and the Z direction indicates the third direction. In this embodiment, the first direction and the second direction are both directions in a horizontal plane, and the Z direction is a vertical direction.

As shown in fig. 2 to 4, the battery module 10 includes a plurality of battery cells 11, a plurality of liquid cooling plates 2, and two support members 3. The plurality of battery cells 11 are arranged in at least two rows of battery cell rows 1 along a first direction (i.e., X direction), the battery cell rows 1 extend along a second direction (i.e., Y direction), and each row of battery cell rows 1 includes a plurality of battery cells 11. A liquid cooling plate 2 is arranged between two adjacent rows of battery cell rows 1, and a liquid cooling channel 211 is arranged in the liquid cooling plate 2. The two supporting components 3 are respectively arranged at two ends of the plurality of battery cells 11 along the second direction, a confluence cavity 33 is arranged in the supporting component 3, a liquid passing port 38 is further arranged on the supporting component 3, one end of the liquid passing port 38 is communicated with the corresponding confluence cavity 33, and the other end of the liquid passing port is communicated with the outside of the supporting component 3. Two ends of each liquid cooling plate 2 along the second direction are respectively supported on the two support assemblies 3, and two ends of the liquid cooling channel 211 are respectively communicated with the converging cavities 33 on the two support assemblies 3. Therefore, for the battery module 10, the liquid passing port 38 of the first support assembly 3, the converging cavity 33 of the first support assembly 3, the liquid cooling channel 211 of the liquid cooling plate 2, the converging cavity 33 of the second support assembly 3 and the liquid passing port 38 of the second support assembly 3 are sequentially communicated, so that a continuous liquid passing channel is formed, and cooling liquid is introduced into the liquid passing channel to cool the battery cell 11.

That is, in the battery module 10 of the present embodiment, the liquid cooling plates 2 are disposed between two adjacent rows of the battery cell rows 1, so that the liquid cooling plates 2 can fully contact with each battery cell 11 for heat exchange, thereby improving the heat dissipation efficiency; the two supporting components 3 cooperate to support the plurality of liquid cooling plates 2, and meanwhile, the converging cavity 33 in the supporting component 3 can converge the liquid cooling channels 211 in the plurality of dry liquid cooling plates 2, so that one liquid passing port 38 is used as a liquid inlet, the other liquid passing port 38 is used as a liquid outlet to realize the supply of cooling liquid in the plurality of liquid cooling plates 2, the structure is simple, the assembly is convenient, and the manufacturing cost of the battery module 10 can be reduced.

In this embodiment, the plurality of electric cores 11 are arranged in four rows of electric core rows 1 along the first direction, each row of electric core rows 1 includes four electric cores 11, and correspondingly, the liquid cooling plates 2 have three and are respectively disposed between two adjacent rows of electric core rows 1. In other embodiments, the number of the battery cell rows 1, the number of the battery cells 11 included in each battery cell row 1, and the total number of the battery cells 11 included in the battery module 10 may be adjusted according to actual needs.

As shown in fig. 3 and 4, the battery cell 11 is a square battery cell, so the battery cell 11 has three sets of opposite sides, and the largest side 111 of the three sets of sides is defined as the largest side 111, and in this embodiment, the largest side 111 of the square battery cell is attached to the liquid cooling plate 2. Therefore, each cell 11 can have a surface as large as possible to perform contact heat exchange with the liquid cooling plate 2, thereby improving the heat dissipation efficiency of the battery module 10.

Preferably, as shown in fig. 5, the battery cells 11 and the liquid cooling plates 2 are connected through the heat conducting adhesive layer 4, on one hand, a plurality of battery cells 11 and a plurality of liquid cooling plates 2 can be fixed into a structural member, so that the operation is more convenient when the structural member is connected with the supporting component 3. On the other hand, the connection mode of the heat conducting adhesive layer 4 can also ensure good heat exchange effect between the battery cell 11 and the liquid cooling plate 2. It is understood that the heat conductive adhesive layer 4 may be any of the prior art, and is not specifically limited herein.

In this embodiment, as shown in fig. 4 and 5, the liquid cooling plate 2 includes a main body 21 and two support portions 22, wherein the main body 21 is disposed between two rows of the battery cell rows 1. The main body 21 is attached to the largest side 111 of the cell 11. The two supporting portions 22 are connected to the lower end of the main body portion 21, the two supporting portions 22 extend to two sides of the main body portion 21 along the first direction, the main body portion 21 and the two supporting portions 22 are configured to be of a 'two-pin' structure, and the adjacent cell rows 1 are respectively supported on the two supporting portions 22 of the liquid cooling plate 2. At this time, the bonding of heat conduction glue film 4 to liquid cooling board 2 and electric core 11 surface, the bearing of bearing portion 22 to electric core 11 lower surface, combined action makes the structure of the structure that electric core 11 and liquid cooling board 2 constitute firm, when carrying this structure to another station from a station through the manipulator, this structure is difficult for taking place to sink along length direction's intermediate position (being difficult for the arc in the middle of the structure promptly), guarantee the shape precision of structure, and then guarantee the position precision of the utmost point post on each electric core 11, ensure the welding precision of follow-up utmost point post and other parts.

Preferably, the liquid cooling plate 2 is formed by extrusion. The extrusion process not only can directly form the 'web' -shaped shape of the liquid cooling plate 2, but also can directly form the liquid cooling channel 211 in the liquid cooling plate 2, and has the advantages of convenient forming and low manufacturing cost. In this embodiment, a plurality of liquid cooling passages 211 are formed in each liquid cooling plate 2, and the plurality of liquid cooling passages 211 are provided in the main body portion 21. The liquid cooling channel 211 is not arranged in the bearing part 22, so that the structural strength of the bearing part 22 is ensured, and the structural strength of a structural member consisting of the battery cell 11 and the liquid cooling plate 2 is further ensured. Specifically, the plurality of liquid cooling channels 211 are arranged in parallel and are arranged along the third direction (i.e., the Z direction), so that uniform heat exchange can be ensured at each position of the battery cell 11 along the Z direction. Both end openings of the liquid cooling passage 211 are provided on end surfaces of both ends of the main body portion 21 in the second direction.

Preferably, as shown in fig. 4 and 6, two ends of the main body portion 21 along the second direction respectively protrude from the supporting portion 22 to respectively form inserting ends 212, and the inserting ends 212 protrude from two ends of the battery cell row 1 along the second direction and are respectively inserted into the supporting assemblies 3 at the corresponding ends, so that two ends of the liquid cooling plate 2 are respectively supported on the corresponding supporting assemblies 3, and openings at two ends of the liquid cooling channel 211 are respectively ensured to extend into the supporting assemblies 3, and then are communicated with the confluence cavity 33 in the supporting assemblies 3.

Preferably, as shown in fig. 3 and 7, the support assembly 3 includes a lower support seat 31 and an upper support seat 32, the upper support seat 32 is buckled on the lower support seat 31 to form a confluence cavity 33 and a plurality of mounting slots 34, the mounting slots 34 are located at one side of the support assembly 3 facing the liquid cooling plates 2, the plurality of mounting slots 34 are all communicated with the confluence cavity 33, and the end part of each liquid cooling plate 2 is correspondingly spliced with one mounting slot 34. That is, the insertion end 212 of each liquid cooling plate 2 is inserted into one of the mounting slots 34, so that the liquid cooling channels 211 can be communicated with the confluence cavity 33 through the mounting slots 34. Through setting up supporting component 3 as upper supporting seat 32 and lower supporting seat 31 of lock about, be convenient for realize converging the processing of chamber 33 and installation slot 34 to the manufacturing degree of difficulty of supporting component 3 is reduced.

In the prior art, the cooling liquid is supplied into the liquid cooling plates, and the structure is generally that a water inlet pipe and a water outlet pipe are welded at two ends of each liquid cooling plate respectively. In the utility model, the two ends of the liquid cooling plate 2 are respectively inserted into the corresponding mounting slots 34, so that the communication between the liquid cooling channel 211 and the converging cavities 33 at the two ends can be realized, the connection structure is reliable, the problems of looseness and liquid leakage are not easy to occur, and the subsequent maintenance and overhaul are convenient. In addition, the scheme of a plurality of inlet tubes and outlet pipes among the prior art can also lead to the whole that liquid cooling board and pipe fitting are constituteed to appear interfering, connection structure is loaded down with trivial details scheduling problem when assembling with the end plate, and the assembly degree of difficulty is big. According to the utility model, by arranging the support assembly 3, when the battery module is assembled, the two ends of the liquid cooling plates 2 along the second direction can be pre-fixed by the aid of the two lower support seats 31, then the two upper support seats 32 are respectively buckled on the lower support seats 31 along the third direction, so that the problem of structural interference cannot occur in the whole assembly process, and after the positions of the upper support seats 31 and the lower support seats 32 are locked, the communication and fixation of the liquid cooling plates 2 and the support assembly 3 can be realized, and the assembly difficulty and the assembly workload are greatly reduced.

In this embodiment, as shown in fig. 3, a first mounting hole 314 is provided on the lower support seat 31, and a second mounting hole 324 is provided on the upper support seat 32 correspondingly, and the first fastener sequentially penetrates through the second mounting hole 324 and the first mounting hole 314 from top to bottom to connect the upper support seat 32 with the lower support seat 31. Wherein the first fastener may be a bolt and the second mounting hole 324 is a threaded hole. The mode of connecting the upper support seat 32 and the lower support seat 31 through the bolts is convenient to install, assemble, disassemble and overhaul.

As shown in fig. 6 and 7, a first half cavity 312 and a plurality of first half grooves 311 are disposed on a side of the lower support seat 31 facing the upper support seat 32, a second half cavity and a plurality of second half grooves 321 are disposed on a side of the upper support seat 32 facing the lower support seat 31, and when the upper support seat 32 is fastened to the lower support seat 31, the first half cavity 312 and the second half cavity are fastened to form a converging cavity 33, and each second half groove 321 is fastened to one first half groove 311 to form one mounting slot 34. Specifically, the number of first half grooves 311, the number of second half grooves 321, and the number of liquid cooling plates 2 are identical. The plurality of first half grooves 311 are arranged at intervals along the first direction, and the plurality of second half grooves 321 are also arranged at intervals along the first direction, so that the liquid cooling plates 2 can be inserted into the mounting slots 34 in a one-to-one correspondence. Preferably, the first half groove 311 extends along the third direction, each position along the third direction is communicated with the first half cavity 312, the second half groove 321 extends along the third direction, each position along the third direction is communicated with the second half cavity, and therefore, when the liquid cooling plate 2 is inserted into the mounting slot 34, the plurality of liquid cooling channels 211 arranged along the third direction can be communicated with the converging cavity 33. Alternatively, as shown in fig. 7, the liquid passing port 38 is disposed on the upper support base 32, and the liquid passing port 38 communicates with the second half chamber, thereby achieving communication with the confluence chamber 33. In other embodiments, the liquid passing port 38 may also be disposed on the lower support seat 31, and the liquid passing port 38 communicates with the first half cavity 312.

Preferably, as shown in fig. 6 and 7, the support assembly 3 is formed with a stop end surface 37, the stop end surface 37 is disposed perpendicular to the second direction, and the end surface of the cell row 1 perpendicular to the second direction abuts against the stop end surface 37 of the support assembly 3 at the corresponding end. When the plugging end 212 of the liquid cooling plate 2 is inserted into the mounting slot 34, the matching of the stop end surface 37 and the end surface of the battery cell 11 can play a role in positioning the battery cell row 1, so that the mounting position precision between the structural member and the supporting component 3 is ensured. In this embodiment, as shown in fig. 7, a first stop surface 313 is disposed on the lower support seat 31, a second stop surface 322 is disposed on the upper support seat 32, and the first stop surface 313 and the second stop surface 322 are disposed coplanar and together form a stop end surface 37. In other embodiments, the stop end surface 37 may also be configured to include only the first stop surface 313, or only the second stop surface 322.

Preferably, the support assembly 3 further comprises a sealing assembly for sealing the communication between the liquid cooling plate 2 and the confluence chamber 33. In this embodiment, the support assembly 3 is configured to include two parts, namely the lower support seat 31 and the upper support seat 32, so that the sealing assembly is conveniently arranged, and the sealing reliability is further ensured.

As shown in fig. 6 and 7, the sealing assembly includes a first sealing member 35, the first sealing member 35 includes a first sealing portion 351 and a second sealing portion 352, the first sealing portion 351 is interposed between the upper support seat 32 and the lower support seat 31, and is disposed around the confluence chamber 33, thereby sealing a gap between the upper support seat 32 and the lower support seat 31, preventing leakage of a cooling liquid from the gap, and improving safety of the battery module 10. The second sealing portion 352 is sandwiched between the side wall of the mounting slot 34 and the side wall of the liquid cooling plate 2, so as to seal the mounting gap between the liquid cooling plate 2 and the mounting slot 34, thereby preventing the leakage of the cooling liquid from the mounting gap, and further improving the safety of the battery module 10. In this embodiment, the first seal member 35 is integrally formed, and in other embodiments, the first seal portion 351 and the second seal portion 352 may be formed as separate members.

To facilitate the processing of the first seal member 35, in the present embodiment, the second seal portion 352 is disposed only between the side wall of the first half groove 311 and the liquid cooling plate 2. In this regard, the battery module 10 of the present embodiment further includes a second seal member 36, and the second seal member 36 is interposed between the side wall of the second half groove 321 and the side wall of the liquid cooling plate 2. The cooperation of the second sealing portion 352 and the second sealing member 36 together achieves sealing of the gap between the mounting slot 34 and the liquid cooling plate 2. It will be appreciated that the cross-sectional shape of the first seal 35 and the second seal 36 may be selected by one skilled in the art based on the actual sealing requirements, and is not specifically limited herein.

Preferably, as shown in fig. 8, the battery module 10 further includes two opposite side plates 5, the side plates 5 are perpendicular to the first direction, at least two rows of the battery cell rows 1 are sandwiched between the two side plates 5, and two ends of the side plates 5 along the second direction are respectively supported on the two support assemblies 3. That is, the two side plates 5 clamp the structural members formed by the plurality of electric cells 11 and the liquid cooling plate 2 at least along the first direction, and are further fixed on the supporting assembly 3, so that the overall structure of the battery module 10 is firm and reliable.

As shown in fig. 8, the side plates 5 include a main body 51 and an installation portion 52, the main body 51 is attached to the cell rows 1 at the corresponding positions, the installation portions 52 are respectively provided at two ends of the main body 51, and the installation portions 52 are connected with the support assemblies 3 at the corresponding ends, so that the two main body 51 can clamp the structural members along the first direction, and simultaneously the structural members, the two support assemblies 3 and the two side plates 5 form a firm whole. In this embodiment, the mounting portion 52 is provided protruding from the side surface of the body portion 51, and the mounting portion 52 is overlapped on the upper surface of the support member 3. The mounting portion 52 is provided with a third mounting hole 521, the support assembly 3 is provided with a fourth mounting hole 325 at a corresponding position, and the second fastening member sequentially penetrates through the third mounting hole 521 and the fourth mounting hole 325 to fix the side plate 5 and the upper support base 32. Optionally, the second fastener is a bolt, the fourth mounting hole 325 is a threaded hole, and the second fastener is screwed to the fourth mounting hole 325. Alternatively, the fourth mounting hole 325 may be provided as a hole penetrating only the upper support base 32, or may be provided as a hole penetrating the upper support base 32 and continuing into the lower support base 31.

Preferably, as shown in fig. 8 and 9, the side plate 5 further includes a support plate 54, and the support plate 54 is connected to the lower end of the body portion 51 and extends toward a side close to the cell row 1 in the first direction, and the cell row 1 is supported on the support plate 54. The structural members formed by the cell rows 1 and the liquid cooling plates 2 can be supported in the third direction through the supporting parts 22, so that the whole battery module 10 has better structural strength. When the battery module 10 is carried from one station to another station by using the manipulator, the sinking and arcing of the middle part of the battery module 10 along the length direction can be avoided, and further, the follow-up accurate matching of the battery module 10 with other parts can be ensured.

In this embodiment, the battery module 10 is fixed inside the case 20 by a fastener, and the connection is reliable, the structure is simple, and the operation is convenient. Specifically, as shown in fig. 8, the side plate 5 further includes a connection protrusion 53, the connection protrusion 53 being provided on a side of the body portion 51 facing away from the cell array 1, the connection protrusion 53 being for connection with the case 20 of the battery case. In the present embodiment, the connection protrusion 53 is provided to extend in the second direction.

As shown in fig. 7, the upper support base 32 is provided with a fifth mounting hole 326, the lower support base 31 is provided with a sixth mounting hole 315, and when the upper support base 32 is fastened to the lower support base 31, the fifth mounting hole 326 and the sixth mounting hole 315 are disposed in a positive opposition. As shown in fig. 8, a plurality of seventh mounting holes 531 are provided on the connection protrusion 53. The battery box further comprises a third fastener and a fourth fastener, wherein the third fastener can lock the supporting component 3 on the box body 20 after penetrating through the fifth mounting hole 326 and the sixth mounting hole 315 in sequence, and the fourth fastener can lock the side plate 5 at the bottom of the box body 20 after penetrating through the seventh mounting hole 531. That is, the entire battery module 10 may be reliably fixed in the case 20 by the third and fourth fasteners.

In this embodiment, as shown in fig. 2 and 9, a ring of boss 201 is provided at the bottom inside the case 20, and the connection protrusion 53 and the support member 3 are respectively supported on the boss 201 when the battery module 10 is placed inside the case 20. The boss 201 is provided with a plurality of screw holes 202, and the plurality of screw holes 202 are provided opposite to the sixth mounting hole 315 or the seventh mounting hole 531, respectively. The third fastener and the fourth fastener may be bolts, the third fastener is connected with the corresponding threaded hole 202 after penetrating the fifth mounting hole 326 and the sixth mounting hole 315, and the fourth fastener is connected with the corresponding threaded hole 202 after penetrating the seventh mounting hole 531.

Preferably, as shown in fig. 9, a glue layer 30 is filled between the bottom of the battery module 10 and the bottom of the box 20, and by setting the glue layer 30, firm connection between the battery module 10 and the box 20 can be ensured, so that the battery module 10 is prevented from moving relative to the box 20, the bottom of the battery module 10 is fully supported, and sinking arcing along the middle of the length direction of the battery module 10 in the use process is avoided.

It is to be understood that the foregoing examples of the utility model are provided for the purpose of illustration only and are not intended to limit the scope of the utility model, which is defined by the claims, since modifications in both the detailed description and the application scope of the utility model will become apparent to those skilled in the art upon consideration of the teachings of the utility model. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (14)

1. The battery module, its characterized in that includes:

the battery cells (11) are arranged into at least two rows of battery cell rows (1) along a first direction, and the battery cell rows (1) extend along a second direction;

the battery cell module comprises a plurality of liquid cooling plates (2), wherein the liquid cooling plates (2) are arranged between two adjacent battery cell rows (1), and a liquid cooling channel (211) is arranged in each liquid cooling plate (2);

two supporting components (3), be provided with in supporting component (3) and converge chamber (33), converge chamber (33) through crossing liquid port (38) and outside intercommunication, every liquid cooling board (2) are followed both ends of second direction support respectively on two supporting component (3), just the both ends of liquid cooling passageway (211) respectively with corresponding end converge chamber (33) and be linked together.

2. The battery module according to claim 1, wherein the supporting component (3) comprises a lower supporting seat (31) and an upper supporting seat (32), the upper supporting seat (32) is buckled on the lower supporting seat (31) to form the converging cavity (33) and a plurality of mounting slots (34), and the mounting slots (34) are positioned on one side, facing the liquid cooling plate (2), of the supporting component (3) and are communicated with the converging cavity (33), and the end part of each liquid cooling plate (2) is correspondingly spliced into one mounting slot (34).

3. The battery module according to claim 2, wherein the support member (3) further comprises:

a first seal member (35) including a first seal portion (351) and a second seal portion (352), wherein the first seal portion (351) is sandwiched between the upper support base (32) and the lower support base (31), and is disposed around the confluence chamber (33), and the second seal portion (352) is sandwiched between the side wall of the mounting slot (34) and the side wall of the liquid cooling plate (2); and/or

And the second sealing piece (36) is clamped between the side wall of the mounting slot (34) and the side wall of the liquid cooling plate (2).

4. The battery module according to claim 2, wherein a first half cavity (312) and a plurality of first half grooves (311) are provided on a side of the lower support base (31) facing the upper support base (32), a second half cavity and a plurality of second half grooves (321) are provided on a side of the upper support base (32) facing the lower support base (31), the first half cavity (312) and the second half cavity constitute the confluence cavity (33), and each of the second half grooves (321) corresponds to one of the first half grooves (311) to constitute one of the mounting slots (34).

5. The battery module according to claim 1, wherein the support member (3) is formed with a stopper end surface (37), the stopper end surface (37) is disposed perpendicularly to the second direction, and an end surface of the cell row (1) perpendicularly to the second direction abuts against the stopper end surface (37) of the support member (3) of the corresponding end.

6. The battery module according to claim 1, wherein the liquid cooling plate (2) includes:

the main body part (21) is arranged between two adjacent rows of the battery cell rows (1);

the two bearing parts (22) are connected to the lower end of the main body part (21) and extend to two sides of the main body part (21) respectively, so that the adjacent battery cell rows (1) are respectively supported on the two bearing parts (22) and are of a 'structure' with the main body part (21).

7. The battery module according to claim 6, wherein two ends of the main body portion (21) along the second direction are respectively protruded from the supporting portion (22) so as to respectively form inserting ends (212), and the inserting ends (212) are respectively protruded from two ends of the battery cell row (1) along the second direction and are respectively inserted into the supporting assemblies (3) at corresponding ends.

8. The battery module according to claim 6, wherein a heat conductive adhesive layer (4) is provided between the main body portion (21) and the battery cells (11) on both sides thereof, and is adhesively connected by the heat conductive adhesive layer (4).

9. The battery module according to any one of claims 1 to 7, further comprising two oppositely disposed side plates (5), the side plates (5) being disposed perpendicular to the first direction, at least two rows of the cell rows (1) being sandwiched between the two side plates (5), both ends of the side plates (5) in the second direction being supported on the two support members (3), respectively.

10. The battery module according to claim 9, wherein the side plate (5) includes:

a body part (51) which is attached to the cell array (1);

and the bearing plates (54) are connected to the lower end of the body part (51), extend towards one side close to the cell rows (1) along the first direction, and respectively bear two adjacent cell rows (1) on the two bearing plates (54).

11. The battery module according to claim 10, wherein the side plate (5) further includes:

mounting parts (52), wherein the mounting parts (52) are respectively arranged at two ends of the body part (51), and the mounting parts (52) are connected with the supporting components (3) at the corresponding ends; and/or

And a connection protrusion (53), wherein the connection protrusion (53) is arranged on one side of the body part (51) facing away from the battery cell row (1), and the connection protrusion (53) is configured to be connected with a box body (20) of a battery box.

12. The battery module according to any one of claims 1 to 7, wherein the electric core (11) is a square electric core, the electric core (11) is provided with a group of largest side surfaces (111) which are oppositely arranged and have the largest area, and the largest side surfaces (111) are attached to the corresponding liquid cooling plates (2).

13. A battery compartment characterized by comprising a compartment (20) and a battery module according to any one of claims 1-12, said battery module being arranged in said compartment (20).

14. The battery compartment as claimed in claim 13, characterized in that a glue layer (30) is filled between the bottom of the battery module and the bottom of the compartment (20).