CN212366087U

CN212366087U - Battery package and vehicle

Info

Publication number: CN212366087U
Application number: CN202021063280.8U
Authority: CN
Inventors: 张�杰
Original assignee: Evergrande New Energy Technology Shenzhen Co Ltd
Current assignee: Evergrande New Energy Technology Shenzhen Co Ltd
Priority date: 2020-06-10
Filing date: 2020-06-10
Publication date: 2021-01-15
Anticipated expiration: 2030-06-10

Abstract

The utility model is suitable for a power battery heat dissipation field provides a battery package and vehicle, and this battery package includes bottom plate, frame construction, liquid cooling plate. The frame structure is connected with the bottom plate, and a plurality of accommodating through holes for placing the battery modules are formed in the frame structure. The liquid cooling plate is installed on the surface of the bottom plate facing the frame structure to seal one side of the containing through hole facing the bottom plate, the frame structure comprises a clearance piece with a groove structure, the opening of the groove structure faces the bottom plate, the liquid cooling plate comprises a first joint and a second joint, and the first joint and the second joint penetrate through the specific space and are contained in the groove structure. The utility model provides a battery pack, liquid cooling plate seal one side of installation holding through-hole towards the bottom plate, and the liquid cooling plate exposes the part and the battery module direct contact of holding through-hole, has cancelled the tray structure, and the radiating effect is good to connect the first joint and the second of liquid cooling plate to pass and keep away empty and accept in groove structure, realize doing wet separation.

Description

Battery package and vehicle

Technical Field

The utility model belongs to the technical field of power battery, more specifically say, relate to a battery package and vehicle.

Background

The power battery is a core element of the electric automobile, and the quality and the efficiency of the power battery are directly related and influence the quality and the effect of the electric automobile. The battery pack thermal management system is a core component of the battery system, and has the main function of maintaining the battery system in a proper temperature range in the working process, so that the service performance, the thermal safety and the cycle life of the battery system are ensured.

Current battery package box designs into "sandwich" structure, is about to the water-cooling board setting between box tray and bottom guard plate, and box tray top is arranged in to the module for the module separates completely with liquid cooling system, realizes the purpose of "doing wet separation". The box tray separates water-cooling board and module, can avoid the risk that the coolant liquid leaks to cause completely, but the thermal resistance of module to water-cooling board in this scheme will increase, can influence the radiating effect to a certain extent, and the box tray also makes box self weight increase in addition, influences the energy density of battery package.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the utility model is to provide a battery package and vehicle to solve the current poor technical problem of battery package box radiating effect of wet separating structure futilely.

In order to achieve the above object, the utility model adopts the following technical scheme: provided is a battery pack including:

a base plate;

the frame structure is fixedly connected with the bottom plate, a plurality of accommodating through holes for placing the battery modules are formed in the frame structure, the frame structure comprises a clearance piece with a groove structure, and the opening of the groove structure faces the bottom plate; and

the liquid cooling plate seals one side of the containing through hole, which faces the bottom plate, the part of the liquid cooling plate, which is exposed in the containing through hole, is used for bearing the battery module, the liquid cooling plate comprises a first joint and a second joint, and the first joint and the second joint both penetrate through the clearance piece and are contained in the groove structure.

By adopting the technical scheme, the plurality of containing through holes used for placing the battery module are formed in the frame structure, the liquid cooling plate seals one side of the containing through holes facing the bottom plate, so that the part of the liquid cooling plate exposed in the containing through holes is in direct contact with the battery module, the tray structure is omitted, the heat dissipation effect is good, the first joint and the second joint of the liquid cooling plate penetrate through the clearance piece and are contained in the groove structure, and the dry-wet separation is realized.

Optionally, the frame structure comprises:

the frame is arranged around the bottom plate;

the first beams are arranged at intervals along a first direction and penetrate through the liquid cooling plate; and

and the second beams are arranged at intervals along a second direction forming a preset angle with the first direction and are spliced with the first beams, and the first beams and the second beams form a plurality of accommodating through holes.

Through adopting above-mentioned technical scheme, wear to locate the liquid cooling board with first roof beam, insert the second roof beam afterwards and locate on first roof beam to can be fixed in the liquid cooling board on the bottom plate, make the liquid cooling board become some additional strengthening of box, when increasing box intensity, also restricted the removal of liquid cooling board.

Optionally, the first beam comprises:

the connecting part is fixedly connected with the bottom plate; and

the first inserting part is fixedly connected with the surface of the connecting part, which is far away from the bottom plate, and a plurality of first inserting grooves are formed in the first inserting part along the length direction of the first inserting part;

and the second beam is provided with a plurality of second inserting grooves which are matched and inserted with the first inserting grooves along the width direction.

Through adopting above-mentioned technical scheme, through seting up a plurality of second inserting grooves on the second roof beam, set up first inserting groove on first grafting portion, through cooperation between them to peg graft the second roof beam together with first roof beam, and then regard as a part of box with the liquid cooling board.

Optionally, the liquid cooling plate comprises a heat exchanging part, and the heat exchanging part is provided with a heat exchanging surface used for being in contact with the battery module;

the battery pack further includes:

the at least two third beams are respectively arranged at two sides of the first beam, are close to the frame and are arranged in parallel with the first beam;

the third beam penetrates through the liquid cooling plate and is welded with the liquid cooling plate;

the second beam is pressed against the upper surface of the third beam.

Through adopting above-mentioned technical scheme, support the second roof beam and press in the upper surface of third roof beam to wear to locate the third roof beam on the liquid cooling board, and the welding of third roof beam and liquid cooling board, thereby on with liquid cooling board PMKD, be difficult for droing.

Optionally, the battery pack further includes a heat conducting pad disposed on the liquid cooling plate, and the third beam includes:

the first lower layer plate is arranged close to the bottom plate, and the bottom of the liquid cooling plate is attached to the top surface of the first lower layer plate; and

the first upper plate is arranged on one side, away from the bottom plate, of the first lower plate, the width of the first upper plate is smaller than that of the first lower plate, and the first upper plate penetrates through the liquid cooling plate;

the connecting portion of the first beam includes:

the second lower layer plate is arranged close to the bottom plate, and the bottom of the liquid cooling plate is attached to the top surface of the second lower layer plate; and

the second upper plate is arranged on one side, away from the bottom plate, of the second lower plate, the width of the second upper plate is smaller than that of the second lower plate, and the second upper plate penetrates through the liquid cooling plate;

the top surface of the first lower plate and the top surface of the second lower plate are positioned on the same plane; the upper surface of the heat conduction pad, the top surface of the first upper plate and the top surface of the second upper plate are positioned on the same plane.

Through adopting above-mentioned technical scheme, because first plywood and second plywood have certain thickness down, the bottom of liquid cooling board and the top surface laminating of first plywood down, the air of being convenient for circulates in the bottom of liquid cooling board, the heat conduction of also being convenient for, and the upper surface of heat conduction pad, the top surface of first upper plate and the top surface of second plywood are located the coplanar, so increased the area of contact of battery module and liquid cooling board, increased heat conduction area.

Optionally, the liquid cold plate comprises:

the first layer plate is arranged on the bottom plate; and

the second laminate is arranged on one side of the first laminate, which is far away from the bottom plate, and the first joint and the second joint are led out of the second laminate and penetrate through the clearance piece;

the first layer plate, the second layer plate, the first joint and the second joint are respectively of an integrally formed structure.

Through adopting foretell technical scheme, set up first plywood, second plywood, first joint and second joint respectively into integrated into one piece structure, be integrated as an organic whole with the liquid cooling board, reduced the use of pipeline and quick plug, reduced the complexity of system.

Optionally, the frame includes:

the two first mounting parts are respectively connected with two opposite sides of the bottom plate and are parallel to the first beam, and the first mounting parts are vertically connected with two ends of the second beam; and

the two second mounting parts are respectively connected with two opposite ends of the bottom plate and are parallel to the second beam;

a third mounting part which is connected with the corresponding first mounting part and the second mounting part in an obtuse angle is arranged between the adjacent end parts of the first mounting part and the second mounting part;

the frame structure further includes:

the baffle is arranged on the bottom plate, is close to the second mounting part and is connected with the end part of each first beam;

the two ends of the baffle are connected with the third installation part to form an isolation space with the second installation part and the third installation part which are adjacent to each other in an enclosing way, or

Two ends of the baffle are connected with the first mounting part so as to form an isolation space by being surrounded with the second mounting part, the third mounting part and a part of the first mounting part which are adjacent;

the first joint, the second joint and the clearance piece are all arranged in the isolation space.

Through adopting above-mentioned technical scheme, all set up first joint, second joint and keep away the sky piece in the isolation space. The isolation space realizes dry-wet separation while considering safety.

Optionally, a first notch is formed in the second installation portion corresponding to the isolation space, a second notch is formed in one end, close to the first notch, of the bottom plate, and the space-avoiding piece is connected with the edge of the first notch and the edge of the second notch.

Through adopting above-mentioned technical scheme, keep away the marginal of empty piece connection first breach and the edge of second breach for holistic structure is compacter.

Optionally, each first mounting portion includes a first mounting bar and a second mounting bar that are parallel to each other and connected to each other in the length direction, and the second mounting bar is disposed on one side of the first mounting bar away from the first beam;

the first mounting strip is provided with a first mounting surface facing the bottom plate, the second mounting strip is provided with a second mounting surface perpendicularly intersected with the first mounting surface, the first mounting surface is abutted against the edge of the liquid cooling plate, and the second mounting surface is fixedly connected with the edge of the bottom plate.

Through adopting above-mentioned technical scheme, with the edge of bottom plate and the second installation face fixed connection of second mounting bar, the edge of liquid cooling board and the second installation face butt of first mounting bar, and first installation face intersects perpendicularly with the second installation face to reserve for the certain mounted position of bottom plate and liquid cooling board, avoid taking place to interfere, make holistic structure compacter.

The utility model also provides a vehicle, include:

the battery pack is provided.

By adopting the technical scheme, the battery pack has the advantages that the liquid cooling plate and the box body are integrated, and the battery module is placed on the liquid cooling plate of the battery pack, so that the subsequent installation procedures of the liquid cooling plate and the box body are reduced, and the heat dissipation effect is good.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

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

fig. 2 is a schematic view of an exploded structure of a battery pack according to an embodiment of the present invention;

fig. 3 is a schematic perspective view of a second beam according to a first embodiment of the present invention;

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

FIG. 5 is a fifth schematic sectional view taken along line A-A of FIG. 3;

FIG. 6 is a partially enlarged view of portion A of FIG. 4;

FIG. 7 is a schematic cross-sectional view taken along line B-B of FIG. 4;

FIG. 8 is a partially enlarged view of the portion B in FIG. 6;

FIG. 9 is an enlarged partial view of the portion C of FIG. 6;

fig. 10 is a schematic view of an exploded structure of a battery pack according to an embodiment of the present invention;

fig. 11 is a third schematic view of an exploded structure of a battery pack according to an embodiment of the present invention;

fig. 12 is a schematic top view of a liquid cooling plate according to an embodiment of the present invention;

fig. 13 is a schematic perspective view of a battery pack according to an embodiment of the present invention;

fig. 14 is a schematic cross-sectional structural diagram of a frame according to a second embodiment of the present invention.

Wherein, in the figures, the respective reference numerals:

1-a battery pack; 10-an accommodating through hole; 11-a base plate; 111-a first plate body; 112-a second plate body; 113-a second reinforcing rib; 114-a second gap; 12-a frame structure; 120-an isolated space; 121-frame; 1211 — a first mounting portion; 1212 — a second mounting portion; 1213-third mount; 1214-a first gap; 1215 — a first mounting bar; 1216-a second mounting bar; 1217-first mounting face; 1218-a second mounting surface; 122 — a first beam; 1221-a connecting portion; 1222-a first mating part; 1223-a first plug-in slot; 1224 — a second lower deck; 1225-a second upper layer plate; 123-a second beam; 1230-a second mating groove; 1231-a tube; 1232-a first stiffener; 125-baffle plate; 13-liquid cold plate; 131-a first layer plate; 132-a second ply; 133-a first joint; 134-a second linker; 135-heat exchanging part; 1351-heat exchange surface; 137-flow channel; 1371-an inlet; 1372-an outlet; 138-mounting holes; 14-an elastic pad; 15-a third beam; 151-a first lower layer plate; 152-a first upper plate; 16-a seal gasket; 17-a clearance; 170-groove structure; 2-a heat conducting pad; l1-first direction; l2-second direction.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "fixedly disposed" or "disposed" on another element, it can be directly on the other element or be indirectly connected to the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. The meaning of "plurality" is one, two or more unless specifically limited otherwise.

Referring to fig. 1 and fig. 2 together, a battery pack 1 according to an embodiment of the present invention will now be described. The battery pack 1 is used for placing a battery module to be cooled, and the battery pack 1 comprises a bottom plate 11, a frame structure 12, a liquid cooling plate 13 and a heat conducting pad 2. Wherein, the frame structure 12 is connected with the bottom plate 11, and the frame structure 12 is formed with a plurality of accommodating through holes 10 for accommodating the battery modules. The liquid cooling plate 13 is mounted on the surface of the bottom plate 11 facing the frame structure 12 to close the side of the receiving through hole 10 facing the bottom plate 11. The frame structure 12 includes a clearance member 17 having a groove structure 170, the opening of the groove structure 170 faces the bottom plate 11, the liquid cooling plate 13 includes a first joint 133 and a second joint 134, and the first joint 133 and the second joint 134 both pass through the clearance member 17 and are accommodated in the groove structure 170.

The embodiment of the utility model provides a battery package 1, compared with the prior art, through forming a plurality of holding through holes 10 that are used for placing the battery module on frame construction 12, liquid cooling plate 13 seals one side of holding through hole 10 towards bottom plate 11, make liquid cooling plate 13 expose in the part and the battery module direct contact of holding through hole 10, cancelled the tray structure, the radiating effect is good, and connect first 133 and the second 134 of liquid cooling plate 13 and pass and keep away empty 17 and accept in groove structure 170, realize doing wet separation.

In a specific application, the liquid cooling plate 13 is used for supplying cooling liquid, the cooling liquid consists of water, an antifreeze and an additive, and the cooling liquid can be alcohol type, glycerin type, glycol type and other types according to different antifreeze components. And can be selected according to specific requirements.

In one embodiment of the present invention, with further reference to fig. 1 and 2, the frame structure 12 includes a rim 121, a plurality of first beams 122, and a plurality of second beams 123. Wherein, the frame 121 encloses the periphery of locating bottom plate 11, and a plurality of first roof beams 122 set up along first direction L1 interval, first roof beam 122 and bottom plate 11 fixed connection are equipped with a plurality of gaps on the liquid cooling board 13, and first roof beam 122 wears to locate the gap on the liquid cooling board 13 for liquid cooling board 13 can laminate with bottom plate 11. The plurality of second beams 123 are arranged at intervals along a second direction L2 forming a predetermined angle with the first direction L1, the second beams 123 are inserted into the first beams 122, and the plurality of first beams 122 are inserted into the plurality of second beams 123 to form a plurality of accommodating through holes 10. The first beam 122 fixedly connected with the base plate 11 penetrates through the liquid cooling plate 13, and then the second beam 123 is connected with the first beam 122 in an inserting mode, so that the liquid cooling plate 13 is fixed on the base plate 11, compared with the existing structure for separating the box body from the liquid cooling plate 13, the liquid cooling plate 13 is made to be a part of reinforcing structure of the box body in the embodiment, the strength of the box body is improved, and meanwhile the movement of the liquid cooling plate 13 is limited. Meanwhile, the box body is beneficial to compact structure and light weight design.

In the present embodiment, the first direction L1 is disposed perpendicular to the second direction L2. The first direction L1 refers to a width direction along the bottom plate 11, and the second direction L2 refers to a length direction along the bottom plate 11. Of course, in other embodiments, the first direction L1 refers to a direction along the length of the bottom plate 11, and then the second direction L2 refers to a direction along the width of the bottom plate 11, which can be selected according to specific requirements.

Of course, in other embodiments, the difference from the above embodiments is that the first beam 122 may be disposed on the liquid cooling plate 13, the second beam 123 is inserted into the first beam 122, and the first beam 122 and the second beam 123 are fixed on the frame 121.

In an embodiment of the present invention, referring to fig. 4 and 7 in particular, the frame 121 is a solid structure. Of course, in other embodiments, referring further to fig. 14, the frame 121 is an aluminum profile, that is, the frame 121 is a hollow structure, and a plurality of rib plates are further disposed in the frame 121. The frame 121 is made of a multi-segment structure by welding, so that the frame structure 12 becomes a main load-bearing structure of the battery pack. The bottom plate 11 is fixedly connected with the frame 121 through welding, so that the overall sealing performance and the connection reliability of the battery pack box body are realized.

In an embodiment of the present invention, with further reference to fig. 2, the first beam 122 includes a connecting portion 1221 and a first mating portion 1222. The connecting portion 1221 is fixedly connected to the bottom plate 11, the first inserting portion 1222 is fixedly connected to a surface of the connecting portion 1221 away from the bottom plate 11, a plurality of first inserting grooves 1223 are formed in the first inserting portion 1222 along a length direction of the first inserting portion 1222, a plurality of second inserting grooves 1230 are formed in the second beam 123 along a width direction of the second beam, and the second inserting grooves 1230 are inserted into the first inserting grooves 1223. The second beam 123 is provided with a plurality of second inserting grooves 1230, the first inserting groove 1223 is provided on the first inserting portion 1222, and the second beam 123 and the first beam 122 are inserted together by the cooperation of the two, so that the liquid cooling plate 13 is used as a part of the box body.

In an embodiment of the present invention, further referring to fig. 3 to 6, the second beam 123 is an aluminum profile, and the second beam 123 comprises a tube body 1231 and a first reinforcing rib 1232. The first reinforcing rib 1232 is strip-shaped, and the first reinforcing rib 1232 with a strip-shaped structure is disposed in the tube body 1231 and extends along the length direction of the tube body 1231. The quantity of first strengthening rib 1232 is a plurality of, and a plurality of first strengthening ribs 1232 set up along the direction of height of body 1231 interval in proper order, can guarantee to bear the same effort and act on, and whole box structure is light and handy. Of course, in the present embodiment, the first beam 122 is also a hollow aluminum profile.

In an embodiment of the present invention, further referring to fig. 7 and 9, the bottom plate 11 is a double-layer plate structure, the double-layer plate structure can effectively resist the impact of foreign matters such as sand and stones at the bottom, and the force of the battery module acting on the bottom plate 11 can be transmitted to the frame 121 of the frame structure 12 through the first beam 122 and the bottom plate 11. The bottom plate 11 includes a first plate body 111, a second plate body 112, and a second reinforcing rib 113. The second plate 112 is disposed on one side of the first plate 111 facing the frame 121, and the second stiffener 113 is connected between the first plate 111 and the second plate 112. The second reinforcing ribs 113 are strip-shaped, the second reinforcing ribs 113 extend along the length direction of the first plate body 111 and the second plate body 112, the number of the second reinforcing ribs 113 is multiple, and the plurality of second reinforcing ribs 113 are arranged at intervals along the width direction of the first plate body 111 and the second plate body 112. The second reinforcing rib 113 functions to make the bottom plate 11 strong and light in structure.

Further, referring to fig. 2 and 9, a plurality of elastic pads 14 are disposed between the liquid cooling plate 13 and the second plate 112, at least a portion of the edge of the liquid cooling plate 13 is welded to the bottom plate 11, the plurality of elastic pads 14 are laid on the bottom plate 11, and the elastic pads 14 are compressed by the liquid cooling plate 13 and the bottom plate 11 in the thickness direction thereof. Specifically, the elastic pad 14 is a member having a certain elastic supporting force, such as foam, silicone, or a spring. The elastic pad 14 is located between the liquid cooling plate 13 and the second plate 112, and plays roles of heat preservation and support, and after the liquid cooling plate 13 is placed on the elastic pad 14, the liquid cooling plate 13 is pre-pressed to a preset position through the role of the second beam 123, and the preset position can be flush with the module installation surface on the frame 121.

In an embodiment of the present invention, referring specifically to fig. 7, 8, 10 and 11, the liquid cooling plate 13 includes a heat exchanging portion 135, and the heat exchanging portion 135 has a heat exchanging surface 1351 for contacting the battery module.

The battery pack 1 further includes at least two third beams 15 respectively disposed at two sides of the first beam 122, and the third beams 15 are disposed near the frame 121 and parallel to the first beam 122. The third beam 15 penetrates through the liquid cooling plate 13 and is welded with the liquid cooling plate 13, and the second beam 123 abuts against the upper surface of the third beam 15. Therefore, the liquid cooling plate 13 is fixed on the third beam 15 and is not easy to fall off.

Further, the battery pack 1 further includes a thermal pad 2 disposed on the liquid-cooled plate 13, and the third beam 15 includes a first lower plate 151 and a first upper plate 152. The first lower plate 151 is disposed close to the bottom plate 11, and the bottom of the liquid cooling plate 13 is attached to the top surface of the first lower plate 151. The first upper plate 152 is disposed on a side of the first lower plate 151 away from the bottom plate 11, a width of the first upper plate 152 is smaller than a width of the first lower plate 151, and the first upper plate 152 penetrates through the liquid cooling plate 13.

The connection portion 1221 of the first beam 122 includes a second lower deck 1224 and a second upper deck 1225. The second lower plate 1224 is disposed adjacent to the bottom plate 11, and the bottom of the liquid cooling plate 13 is attached to the top surface of the second lower plate 1224. The second upper plate 1225 is disposed on a side of the second lower plate 1224 facing away from the bottom plate 11, the width of the second upper plate 1225 is smaller than the width of the second lower plate 1224, and the second upper plate 1225 penetrates through the liquid cooling plate 13. The top surface of the first lower plate 151 and the bottom surface of the second lower plate 1224 are located on the same plane, and the first lower plate 151 and the second lower plate 1224 have a certain thickness, so that the bottom of the liquid cooling plate 13 is attached to the top surface of the first lower plate 151, air can conveniently circulate at the bottom of the liquid cooling plate 13, and heat conduction is also facilitated.

Further, in the present embodiment, the upper surface of the thermal pad 2, the top surface of the first upper plate 152 and the top surface of the second lower plate 1224 are located on the same plane, so that the contact area between the battery module and the liquid cooling plate 13 is increased, and the thermal conduction area is increased. The heat conducting pad 2 is a high-performance gap-filling heat conducting material, and is mainly used for a transfer interface between electronic equipment and a heat sink or a product shell. Has good viscosity, flexibility, good compression properties and excellent thermal conductivity. The air between the electronic element and the radiating fin can be completely exhausted when the electronic element is used, so that the contact is full, and the radiating effect is obviously improved.

In an embodiment of the present invention, referring specifically to fig. 2 and 12, the direction of the arrow in fig. 12 is the flow direction of the cooling liquid. The liquid-cooled panel 13 includes a first plate 131 and a second plate 132. The first layer plate 131 is disposed on the bottom plate 11, and a plurality of runners 137 connected in parallel or in series are disposed on the first layer plate 131. The second plate 132 is disposed on a side of the first plate 131 away from the bottom plate 11 and encloses the flow channel 137, the first joint 133 is connected to the first plate 131 and an inlet 1371 of the flow channel 137, and the second joint 134 is connected to the second plate 132 and an outlet 1372 of the flow channel 137. The first joint 133 and the second joint 134 are led out from the second laminate 132 and pass through the clearance 17. The first layer plate 131, the second layer plate 132, the first joint 133 and the second joint 134 are respectively formed into a whole by welding (e.g., furnace brazing), and the liquid-cooled plate 13 is integrated into a whole, thereby reducing the use of pipes and quick plugs. The thickness of the first layer board 131 and the second layer board 132 does not exceed 1.5mm, so that punch forming is facilitated, and the weight is light. The first joint 133 and the second joint 134 are arranged at one end of the liquid cooling plate 13 close to the other second mounting portion 1212, and the first joint 133 and the second joint 134 are arranged on the same side. Of course, in other embodiments, the flow channel 137 may be disposed on the second layer plate 132, which is not limited herein.

In this embodiment, the flow channel 137 is formed on the first layer plate 131 by stamping, and the flow channel 137 is U-shaped or serpentine. Compared with the runner 137 in other shapes, the runner 137 is U-shaped, and processing and manufacturing are facilitated. The flow channel 137 is arranged in a snake shape, the path of the flow channel 137 is increased, the retention time of cooling liquid in the flow channel 137 is further prolonged, the contact area between the battery module and the cooling liquid is indirectly increased, the convection exchange coefficient is improved, and the uniform heat dissipation of the battery module can be realized. The first connector 133 and the second connector 134 are located on the same side of the second layer plate 132, and are respectively an inlet connector and an outlet connector, and are communicated with the flow channel 137 to form a complete cooling loop. The second layer plate 132 has a flat plate structure, which is beneficial to increasing the contact area between the battery module and the second layer plate 132 and enhancing the heat dissipation effect of the liquid cooling plate 13. The specific flow of the cooling liquid is as follows:

the cooling fluid flows through the first connector 133 to the inlet 1371 of the runner 137 and to the outlet 1372 of the runner 137, and then flows out through the second connector 134.

Of course, in other embodiments, the flow channel 137 may be disposed on the second layer plate 132.

In an embodiment of the present invention, referring to fig. 2, 4, 7, 8 and 10, the frame 121 includes two first installation portions 1211 and two second installation portions 1212. The two first installation portions 1211 are respectively disposed on two opposite sides of the bottom plate 11 and are parallel to the first beam 122, the first installation portions 1211 are vertically connected to two ends of the second beam 123, the second installation portions 1212 are respectively connected to two opposite ends of the bottom plate 11 and are parallel to the second beam 123, a third installation portion 1213 connected to the corresponding first installation portion 1211 and the second installation portion 1212 at an obtuse angle is disposed between the adjacent ends of the first installation portion 1211 and the second installation portion 1212, and the periphery of the liquid cooling plate 13 is clamped between the first installation portion 1211, the third installation portion 1213 and one of the second installation portions 1212 of the bottom plate 11 and the frame 121. By clamping the periphery of the liquid cooling plate 13 between the bottom plate 11 and the first mounting portion 1211, the third mounting portion 1213 and one of the second mounting portions 1212 of the frame 121, the liquid cooling plate 13 can be fixed in the frame 121, so that the overall structure is compact.

In this embodiment, referring to fig. 1, 2 and 4, the frame structure 12 further includes a baffle 125, the baffle 125 is disposed on the bottom plate 11, and is close to the second mounting portion 1212 and connected to the end of each first beam 122, two ends of the baffle 125 are connected to the third mounting portion 1213 to form an isolation space 120 by enclosing with the adjacent second mounting portion 1212 and the adjacent third mounting portion 1213, or two ends of the baffle 125 are connected to the first mounting portion 1211 to form an isolation space 120 by enclosing with a part of the adjacent second mounting portion 1212, the adjacent third mounting portion 1213 and the adjacent first mounting portion 1211, and the first joint 133, the second joint 134 and the void-avoiding member 17 are disposed in the isolation space 120. The first joint 133, the second joint 134 and the clearance 17 are disposed in the isolation space 120. While safety is taken into account, the insulation space 120 achieves dry-wet separation.

In an embodiment of the present invention, referring to fig. 12 and 13, a first notch 1214 is opened corresponding to the second installation portion 1212 forming the isolation space 120, a second notch 114 is opened at an end of the bottom plate 11 close to the first notch 1214, and the clearance 17 connects an edge of the first notch 1214 and an edge of the second notch 114. The space-avoiding member 17 is connected to the edge of the first notch 1214 and the edge of the second notch 114, and the structure is compact.

Further, referring to fig. 2, 4, 7, 8 and 10, each of the first mounting portions 1211 includes a first mounting bar 1215 and a second mounting bar 1216 parallel to each other and connected to each other in a length direction, and the second mounting bar 1216 is disposed at a side of the first mounting bar 1215 away from the first beam 122.

The first mounting bar 1215 has a first mounting surface 1217 facing the base plate 11, the second mounting bar 1216 has a second mounting surface 1218 perpendicularly intersecting the first mounting surface 1217, the first mounting surface 1217 abuts an edge of the liquid cooling plate 13, and the second mounting surface 1218 is fixedly connected to the edge of the base plate 11. Therefore, a certain installation position is reserved for the bottom plate 11 and the liquid cooling plate 13, and the whole structure is compact without interference between the bottom plate 11 and the liquid cooling plate 13. The bottom surface of the second mounting strip 1216 is flush with the bottom surface of the bottom plate 11, the first mounting surface 1217 is 3mm to 5mm higher than the bottom surface of the second mounting strip 1216, and in this range, the thicknesses of the bottom plate 11 and the liquid cooling plate 13 are thinner, which is beneficial to punch forming and has lighter weight. Below this range, the strength of the bottom plate 11 is affected, and above this range, the forming is not facilitated.

A gasket 16 is provided between the edge of the liquid-cooled plate 13 and the first mounting surface 1217. The liquid cooling plate 13 is ensured to have good sealing performance with the matching surfaces between the frame 121 and the third beam 15. A plurality of mounting holes 138 are formed at the edge of the liquid cooling plate 13, so that the liquid cooling plate 13 can be conveniently mounted on the frame 121.

The utility model also provides a vehicle, including the battery package 1 in above-mentioned arbitrary embodiment.

This vehicle is through adopting foretell battery package 1, is integrated as an organic whole with liquid cooling board 13 and bottom plate 11, has increased intensity, has reduced the installation process of subsequent liquid cooling board 13 and box, and makes liquid cooling board 13 and battery module direct contact, and heat dispersion is good.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A battery pack, comprising:

a base plate;

the frame structure is fixedly connected with the bottom plate, a plurality of accommodating through holes for accommodating the battery modules are formed in the frame structure, the frame structure comprises a clearance piece with a groove structure, and an opening of the groove structure faces the bottom plate; and

the liquid cooling plate is used for sealing one side, facing the bottom plate, of the containing through hole, the part, exposed in the containing through hole, of the liquid cooling plate is used for bearing the battery module, the liquid cooling plate comprises a first joint and a second joint, and the first joint and the second joint penetrate through the clearance piece and are contained in the groove structure.

2. The battery pack according to claim 1, wherein: the frame structure includes:

the frame is arranged around the bottom plate;

the second beams are arranged at intervals along a second direction which forms a preset angle with the first direction and are spliced with the first beams, and the first beams and the second beams form a plurality of accommodating through holes.

3. The battery pack according to claim 2, wherein: the first beam includes:

the connecting part is fixedly connected with the bottom plate; and

and the second beam is provided with a plurality of second inserting grooves which are matched and inserted with the first inserting grooves along the width direction of the second beam.

4. The battery pack according to claim 3, wherein: the liquid cooling plate comprises a heat exchange part, and the heat exchange part is provided with a heat exchange surface used for being in contact with the battery module;

the battery pack further includes:

the second beam is pressed against the upper surface of the third beam.

5. The battery pack according to claim 4, wherein: the battery package still including set up in heat conduction pad on the liquid cooling plate, the third roof beam includes:

the first lower plate is arranged close to the bottom plate, and the bottom of the liquid cooling plate is attached to the top surface of the first lower plate; and

the connecting portion of the first beam includes:

the second lower plate is arranged close to the bottom plate, and the bottom of the liquid cooling plate is attached to the top surface of the second lower plate; and

6. The battery pack according to any one of claims 2 to 5, wherein: the liquid cooling plate includes:

the first laminate is arranged on the bottom plate; and

the first layer plate is arranged on one side of the first layer plate, which is far away from the bottom plate, and the first joint and the second joint are led out of the first layer plate and penetrate through the clearance piece;

the first laminate, the second laminate, the first joint and the second joint are respectively of an integrally formed structure.

7. The battery pack according to claim 6, wherein: the frame includes:

a third mounting part which is connected with the corresponding first mounting part and the second mounting part in an obtuse angle is arranged between the adjacent ends of the first mounting part and the second mounting part;

the frame structure further includes:

the both ends of baffle with the third installation department is connected, in order with the neighbour second installation department and third installation department enclose to close and form isolation space, or

Two ends of the baffle are connected with the first mounting part so as to form an isolation space by enclosing a part of the second mounting part, the third mounting part and the first mounting part which are adjacent;

8. The battery pack according to claim 7, wherein: a first gap is arranged on the second installation part correspondingly forming the isolation space, and a second gap is arranged at one end of the bottom plate close to the first gap

The clearance piece is connected with the edge of the first notch and the edge of the second notch.

9. The battery pack according to claim 7, wherein: each first mounting part comprises a first mounting strip and a second mounting strip which are parallel to each other and connected with each other in the length direction, and the second mounting strip is arranged on one side, far away from the first beam, of the first mounting strip;

10. A vehicle, characterized in that: the method comprises the following steps:

the battery pack according to any one of claims 1 to 9.