CN219959137U - Battery liquid cooling assembly and battery pack - Google Patents

Abstract

The utility model relates to a battery liquid cooling assembly and a battery pack, wherein the battery liquid cooling assembly comprises a main body, mounting beams and fixing pieces, the main body comprises a liquid cooling part and a supporting part, the liquid cooling part and the supporting part are connected at an included angle to form a mounting position for mounting a battery core, a liquid cooling runner is arranged in the liquid cooling part, the mounting beams are arranged at the opposite ends of the supporting part, at least one fixing piece is arranged corresponding to each mounting beam, one side surface of the supporting part, which is connected with the liquid cooling part, is a first side surface, the fixing pieces comprise a first fixing part and a second fixing part which are mutually connected, the first fixing part is connected with the first side surface, the second fixing part protrudes out of the periphery of the first side surface, and the second fixing part is connected with the mounting beams. The supporting part of this battery liquid cooling subassembly sets up in one side of installation roof beam to fix supporting part and installation roof beam through the mounting, so that the height of installation roof beam and the thickness of supporting part can not add up, reduced the installation space of battery liquid cooling subassembly in the battery box, thereby increased the energy density of battery package.

Description

Battery liquid cooling assembly and battery pack

Technical Field

The utility model relates to the technical field of batteries, in particular to a battery liquid cooling assembly and a battery pack.

Background

The battery pack can generate heat in the process of charging or discharging, so that a liquid cooling structure is required to be arranged in the battery pack to cool and dissipate heat of each battery, so that the battery pack is maintained at a proper temperature. At present, the liquid cooling structure is usually including liquid cooling board and the backup pad that is the contained angle and connect, and the electric core setting is in the both sides of liquid cooling board to dispel the heat to the battery through the liquid cooling board, the supporting part is used for supporting the electric core that is located both sides. During installation, the liquid cooling structure is arranged in the battery box, an installation beam is arranged in the battery box in order to prevent the battery box from being damaged, the supporting plate is overlapped on the installation beam, and then the supporting plate is locked on the installation beam through a screw. The prior art has the following technical defects: when the supporting plate is stacked on the mounting beam, the height of the mounting beam and the thickness of the supporting plate are accumulated, the space occupied by the liquid cooling structure in the battery box is increased, the use space of the battery cell in the battery box is reduced, and the energy density of the battery pack is further reduced.

Disclosure of Invention

One object of an embodiment of the utility model is to: the battery liquid cooling assembly is simple in structure and capable of reducing occupied installation space.

Another object of an embodiment of the utility model is to: provided is a battery pack having a simple structure and high energy density.

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

in a first aspect, a battery liquid cooling assembly is provided, which comprises a main body, an installation beam and a fixing piece, the main body comprises a liquid cooling part and a supporting part, the liquid cooling part is connected with the supporting part to form an installation position for installing an electric core in an included angle mode, a liquid cooling flow channel is arranged in the liquid cooling part, the opposite ends of the supporting part are respectively provided with the installation beam, at least one fixing piece is arranged corresponding to each installation beam, the supporting part is connected with one side face of the liquid cooling part to form a first side face, the fixing piece comprises a first fixing part and a second fixing part which are connected with each other, the first fixing part is connected with the first side face, and the second fixing part protrudes out of the periphery of the first side face, and the second fixing part is connected with the installation beam.

As a preferable scheme of the battery liquid cooling assembly, the second fixing part is provided with a step surface towards one side surface of the mounting beam, the distance between the step surface and the first side surface is L1, the distance between one side surface of the first fixing part towards the first side surface and the first side surface is L2, L1 is more than L2, and the step surface is abutted to the mounting beam.

As a preferred scheme of battery liquid cooling subassembly, still include locking piece, second fixed part is provided with first fixed orifices, the installation roof beam corresponds first fixed orifices is provided with the second fixed orifices, locking piece passes first fixed orifices with the second fixed orifices is in order to lock the mounting on the roof beam, wherein, at least part first fixed orifices is waist type hole.

As a preferable scheme of the battery liquid cooling assembly, at least part of the second fixing part is clamped with the mounting beam.

As a preferred scheme of battery liquid cooling subassembly, at least part the second fixed part runs through and sets up the third fixed orifices, the third fixed orifices is including first hole and the second hole of mutual intercommunication, the size of first hole is greater than the size of second hole, the installation roof beam corresponds the third fixed orifices is provided with the locating part, the locating part is kept away from the one end of installation roof beam is provided with first spacing portion, first spacing portion with form the draw-in groove between the installation roof beam, the locating part can pass first hole, just the pore wall card in the draw-in groove is established to the pore wall card in the second hole.

As a preferable scheme of the battery liquid cooling assembly, a reinforcing beam is arranged on one side surface of the supporting part opposite to the first side surface in a protruding mode.

As a preferable scheme of the battery liquid cooling assembly, an adhesive layer is arranged on one side surface, far away from the supporting part, of the reinforcing beam, and the adhesive layer is used for being adhered with the battery box.

As a preferred scheme of battery liquid cooling subassembly, the stiffening beam keeps away from a side of supporting part is concave to be equipped with the injecting glue groove, the adhesive layer part sets up in the injecting glue groove.

As a preferable mode of the battery liquid cooling assembly, the first fixing portion is welded with the supporting portion.

As a preferable scheme of the battery liquid cooling assembly, an insulating layer is sprayed on the surface of the main body.

As a preferred scheme of battery liquid cooling subassembly, the mounting still includes connecting portion and second spacing portion, the second spacing portion with first fixed part interval sets up, connecting portion connect the second spacing portion with first fixed part forms the spacing groove, supporting part sets up in the spacing groove.

As a preferable mode of the battery liquid cooling assembly, the supporting part is provided with a second side surface which is opposite to the first side surface;

the first side surface is welded with the first fixing part; and/or the number of the groups of groups,

the second side face is welded with the second limiting part.

As a preferred scheme of battery liquid cooling subassembly, the second side is provided with the reinforcement, the spacing portion of second is provided with the welding groove, the welding groove runs through the spacing portion of second is kept away from the terminal surface of second fixed part, the reinforcement part sets up in the welding groove, just the cell wall of welding groove with the reinforcement welding.

As a preferable mode of the battery liquid cooling assembly, a heat insulating member is arranged between the second fixing part and the mounting beam.

In a second aspect, a battery pack is provided, including a battery cell, a battery box and the above-mentioned battery liquid cooling assembly, the battery liquid cooling assembly is disposed in the battery box, and the battery cell is disposed on an installation position of the battery liquid cooling assembly.

The embodiment of the utility model has the beneficial effects that: this battery liquid cooling subassembly is through being provided with the mounting in the backup pad to the second fixed part protrusion of mounting is in the periphery of supporting part, so that form the step position between the lateral wall of second fixed part and supporting part, and the installation roof beam sets up in the step position, and will the second fixed part deviates from a side butt of liquid cooling portion is in on the installation roof beam, in order to realize the installation of supporting part on the installation roof beam, at this moment, the installation department is located one side of installation roof beam, therefore the height of installation roof beam can not be accumulated with the thickness of supporting part, has reduced the installation space of battery liquid cooling subassembly in the battery box, thereby has increased the installation space of electric core in the battery box, and then has increased the energy density of battery package.

Drawings

The utility model is described in further detail below with reference to the drawings and examples.

Fig. 1 is a schematic view of a first view angle of a battery liquid cooling assembly according to an embodiment of the utility model.

Fig. 2 is a schematic structural diagram of a second view angle of a battery liquid cooling assembly according to an embodiment of the utility model.

Fig. 3 is a cross-sectional view of a battery liquid cooling assembly according to an embodiment of the utility model.

Fig. 4 is a schematic structural view of a fixing member according to an embodiment of the present utility model.

Fig. 5 is a schematic structural view of a fixing member according to another embodiment of the present utility model.

Fig. 6 is a schematic view illustrating the fitting of the fixing member, the limiting member and the mounting beam according to another embodiment of the present utility model.

Fig. 7 is a schematic view of a battery liquid cooling assembly according to another embodiment of the utility model.

Fig. 8 is a partial enlarged view at a of fig. 7.

Fig. 9 is a schematic diagram illustrating a battery liquid cooling assembly according to another embodiment of the utility model.

FIG. 10 is a schematic structural view of a fastener according to another embodiment of the present utility model

Fig. 11 is a schematic structural view of a battery pack according to an embodiment of the present utility model.

In the figure:

1. a main body; 11. a liquid cooling section; 111. a liquid cooling runner; 12. a support part; 121. a first side; 122. a stiffening beam; 1221. a glue injection groove; 123. a second side; 13. a mounting position; 2. mounting a beam; 21. a second fixing hole; 3. a fixing member; 31. a first fixing portion; 32. a second fixing portion; 321. a step surface; 322. a first fixing hole; 323. a third fixing hole; 3231. a first hole; 3232. a second hole; 33. a connection part; 34. a second limit part; 341. a welding groove; 35. a limit groove; 4. a locking piece; 5. a limiting piece; 51. a first limit part; 52. a limit column; 6. an adhesive layer; 7. a split flow; 8. a battery cell; 9. a heat insulating member; 10. a reinforcement.

Detailed Description

In order to make the technical problems solved by the present utility model, the technical solutions adopted and the technical effects achieved more clear, the technical solutions of the embodiments of the present utility model will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model.

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.

The battery pack can generate heat in the process of charging or discharging, so that a liquid cooling structure is required to be arranged in the battery pack to cool and dissipate heat of each battery, so that the battery pack is maintained at a proper temperature. At present, the liquid cooling structure is usually including being liquid cooling board and the backup pad that the contained angle is connected, and the battery setting is in the both sides of liquid cooling board to dispel the heat to the battery through the liquid cooling board, the supporting part is used for supporting the battery that is located both sides. During installation, the liquid cooling structure is arranged in the battery box, an installation beam is arranged in the battery box in order to prevent the battery box from being damaged, the supporting plate is overlapped on the installation beam, and then the supporting plate is locked on the installation beam through a screw. The prior art has the following technical defects: when the supporting plate is stacked on the mounting beam, the height of the mounting beam and the thickness of the supporting plate are accumulated, the space occupied by the liquid cooling structure in the battery box is increased, the use space of the battery cell in the battery box is reduced, and the energy density of the battery pack is further reduced.

In order to solve the technical drawbacks described above, as shown in fig. 1 and 2, the present utility model provides a battery liquid cooling assembly, which includes a main body 1, an installation beam 2 and a fixing member 3, wherein the main body 1 includes a liquid cooling portion 11 and a supporting portion 12, the liquid cooling portion 11 and the supporting portion 12 are connected at an included angle to form an installation position 13 for installing a battery core 8, a liquid cooling flow channel 111 is provided in the liquid cooling portion 11 for circulating cooling liquid so as to radiate heat of the battery core 8, the installation beams 2 are provided at opposite ends of the supporting portion 12, at least one fixing member 3 is provided corresponding to each installation beam 2, one side surface of the supporting portion 12 connected with the liquid cooling portion 11 is a first side surface 121, the fixing member 3 includes a first fixing portion 31 and a second fixing portion 32 which are connected with each other, the first fixing portion 31 is connected with the first side surface 121, the second fixing portion 32 protrudes from the periphery of the first side surface 121, and the second fixing portion 32 is connected with the installation beam 2. This battery liquid cooling subassembly is through being provided with mounting 3 in the backup pad to the second fixed part 32 protrusion of mounting 3 is in the periphery of the first side 121 of supporting part 12, so that form the step position between the lateral wall of second fixed part 32 and supporting part 12, installation roof beam 2 sets up in the step position, and be connected second fixed part 32 with installation roof beam 2, in order to realize the installation of main part 1 on installation roof beam 2, at this moment, the supporting part 12 of main part 1 is located one side of installation roof beam 2, consequently the height of installation roof beam 2 can not be accumulated with the thickness of supporting part 12, has reduced the installation space of battery liquid cooling subassembly in the battery box, thereby increased the installation space of electric core 8 in the battery box, and then increased the energy density of battery package.

In order to prevent the battery box from being damaged or broken down when the liquid cooling structure is mounted in the battery box, it is not generally necessary to directly lock the liquid cooling structure to the side wall of the battery box, and therefore, it is necessary to install the mounting beam 2 in the battery box and lock the liquid cooling structure to the mounting beam 2.

In this embodiment, the liquid cooling portion 11 is disposed perpendicular to the supporting portion 12, and the liquid cooling portion 11 is located in the middle of the supporting portion 12, so that the liquid cooling portion 11 divides the space of the first side 121 of the supporting portion 12 into two mounting positions 13, in other words, the two mounting positions 13 are located on two sides of the liquid cooling portion 11, and the two mounting positions 13 can be used for mounting the battery cells 8, so that the main body 1 can cool and cool two groups of battery cells 8 at the same time, and the cooling efficiency is high.

Specifically, as shown in fig. 1 and 6, the second fixing portion 32 is provided with a step surface 321 facing one side of the mounting beam 2, the distance between the step surface 321 and the first side 121 is L1, the distance between one side of the first fixing portion 31 facing the first side 121 and the first side 121 is L2, L1 > L2, so that the thickness of the second fixing portion 32 is thinner than that of the first fixing portion 31, the step surface 321 abuts against the mounting beam 2, and the depth of a step formed between the step surface 321 and the end surface of the supporting portion 12 is greater, which increases the overlap ratio between the mounting beam 2 and the supporting portion 12 along the height direction of the battery, and further reduces the mounting space of the battery liquid cooling assembly.

When the first fixing portion 31 is attached to the first side 121, the distance L2 between one side of the first fixing portion 31 facing the first side 121 and the first side 121 is zero.

Alternatively, the first fixing portion 31 is welded to the support portion 12, that is, the fixing member 3 is welded to the support portion 12, improving the connection stability of the fixing member 3 and the support portion 12, and thus the connection stability between the main body 1 and the mounting beam 2.

In other embodiments, the first fixing portion 31 is detachably connected to the supporting portion 12, so as to facilitate the assembly and disassembly of the fixing member 3, for example, a threaded connection, a clamping connection, a fastening connection, etc.

In this embodiment, as shown in fig. 2 and 4, the second fixing portion 32 is provided with a first fixing hole 322, the mounting beam 2 is provided with a second fixing hole 21 corresponding to the first fixing hole 322, and the locking member 4 passes through the first fixing hole 322 and the second fixing hole 21 to lock the fixing member 3 to the mounting beam 2. The locking piece 4 is a screw, the screw is matched with the first fixing hole 322 and the second fixing hole 21 to realize the threaded locking of the supporting part 12 and the mounting beam 2, the threaded connection stability is good, and the dismounting efficiency is high. At least a portion of the first fixing holes 322 are waist-shaped holes, and the waist-shaped holes have a certain length, in other words, the waist-shaped holes have a certain adjusting space, and when the fixing device is installed, the positions of the screws in the waist-shaped holes are adjusted, so that assembly or manufacturing errors of the structures such as the fixing piece 3 and the supporting portion 12 are counteracted, and the situation that the screws interfere with the second fixing holes 21 to cause incapability of installation is avoided. Specifically, a rivet nut is disposed in the second fixing hole 21, and a threaded end of the screw passes through the first fixing hole 322 to be engaged with the rivet screw. In another embodiment, the second fixing hole 21 is a threaded hole, so that the screw passes through the first fixing hole 322 to directly screw-fit with the second fixing hole 21. Of course, in some embodiments, the locking member 4 may also be a mating structure of a bolt and a nut.

Preferably, the step surface 321 is provided with a countersunk groove, and the first fixing hole 322 penetrates through the bottom of the countersunk groove, and the step part of the rivet nut is arranged in the countersunk groove.

In some embodiments, as shown in fig. 1, four fixing members 3 are provided, and two fixing members 3 are respectively disposed at opposite ends of the supporting portion 12, where the opposite ends may be opposite ends of the supporting portion 12 arranged along the length direction, or opposite ends of the supporting portion 12 arranged along the width direction. Through setting up four mounting 3 and being connected with the installation roof beam 2, improved the stability of main part 1, the first fixed orifices 322 on four mounting 3 are waist type hole, consequently all can adjust at the equal position of four mounting 3 of installation. In still other embodiments, only a portion of the first fastening holes 322 may be provided with a waist-shaped hole, for example, one, two, or three of the four first fastening holes 322 may be provided with a waist-shaped hole. In other embodiments, the fixing elements 3 may also be provided in two, three, five or another number.

In another embodiment, the fixing member 3 may be provided only at one end of the supporting portion 12, the fixing member 3 is screwed to the mounting beam 2, and the supporting portion 12 may support the battery using its own rigidity characteristics.

In still another embodiment, as shown in fig. 5 and 6, at least part of the second fixing portion 32 is clamped with the mounting beam 2, so that the dismounting efficiency of the clamped connection mode is high, and the dismounting efficiency of the fixing member 3 and the mounting member can be improved. Specifically, the fixing member 3 at one of the opposite ends of the support portion 12 is engaged with the mounting beam 2, and the fixing member 3 at the other end is screwed with the mounting beam 2. In other embodiments, the fixing members 3 at two ends of the supporting portion 12 are clamped with the mounting beam 2.

Specifically, as shown in fig. 5 and 6, at least a part of the second fixing portion 32 penetrates through a third fixing hole 323, wherein the third fixing hole 323 is a gourd hole, the third fixing hole 323 includes a first hole 3231 and a second hole 3232 which are communicated with each other, the size of the first hole 3231 is larger than that of the second hole 3232, the mounting beam 2 is provided with a limiting piece 5 corresponding to the third fixing hole 323, one end, far away from the mounting beam 2, of the limiting piece 5 is provided with a first limiting portion 51, a clamping groove is formed between the first limiting portion 51 and the mounting beam 2, the limiting piece 5 can penetrate through the first hole 3231, and the hole wall of the second hole 3232 is clamped in the clamping groove. During installation, the limiting piece 5 is inserted into the third fixing hole 323 from the position of the first hole 3231, the limiting piece 5 is pushed into the second hole 3232 after being inserted into the first hole 3231, and the hole wall of the second hole 3232 is clamped in the groove, so that the main body 1 is in the jurisdiction of five dimensions, the main body 1 is pre-fixed on the mounting beam 2, an auxiliary tool is not needed in the dismounting process, and the dismounting efficiency is high. In this embodiment, the fixing piece 3 at one end of the supporting portion 12 is provided with the third fixing hole 323, the fixing piece 3 at the other end is provided with the first fixing hole 322, during installation, one end of the main body 1 is clamped with the limiting piece 5 through the fixing piece 3, and then the other end is fixed through the screw locking, so that the installation efficiency is improved, and the stability of the main body 1 on the installation beam 2 is also improved.

Optionally, the limiting member 5 includes a limiting post 52 and a first limiting portion 51, the limiting post 52 is disposed on the mounting beam 2, the first limiting portion 51 is disposed at an end of the limiting post 52 away from the mounting beam 2, wherein a size of the first limiting portion 51 is larger than a size of the limiting post 52, and a size of the first limiting portion 51 is smaller than a size of the first hole 3231 and larger than a size of the second hole 3232, so that the first limiting portion 51 can pass through the first hole 3231, and when the limiting post 52 is inserted into the second hole 3232, the first limiting portion 51 can limit the fixing member 3, and prevent the fixing member 3 from being separated from the limiting member 5 from an axial direction of the limiting post 52.

Preferably, the limiting member 5 may be a screw, wherein the limiting post 52 is a stud of the screw, the first limiting portion 51 is a nut of the screw, and the screw is a standard member, which has low manufacturing cost.

As shown in fig. 2 and 3, in order to increase the strength of the supporting portion 12, a side surface of the supporting portion 12 opposite to the first side surface 121 protrudes to form a reinforcing beam 122, specifically, two reinforcing beams 122 are disposed on the supporting portion 12 at intervals, and the two reinforcing beams 122 are disposed in parallel, and after the main body 1 is installed in the battery box, the reinforcing beam 122 abuts against the bottom of the battery box, so as to prevent the middle of the main body 1 from being suspended in the battery box. In other embodiments, one reinforcing beam 122, three reinforcing beams 122, or other numbers of reinforcing beams 122 may be provided on the support. When more than two reinforcing beams 122 are provided, all the reinforcing beams 122 may be staggered or may be arranged in parallel.

Optionally, the reinforcing beam 122 is provided with an adhesive layer 6, and the adhesive layer 6 is used for being adhered to the battery box body, so as to prevent the main body 1 from sliding in the battery box, and improve the stability of the battery pack using the battery liquid cooling assembly.

Optionally, a side of the reinforcement beam 122 facing away from the support portion 12 is concavely provided with a glue injection groove 1221, and the adhesive layer 6 is partially disposed in the glue injection groove 1221. On the one hand, the glue injection groove 1221 arranged on the supporting part 12 facilitates the injection of the adhesive glue into the adhesive layer 6, and improves the efficiency of arranging the adhesive layer 6 on the reinforcing beam 122; on the other hand, the provision of a part of the adhesive layer 6 in the glue injection groove 1221 can increase the contact area between the reinforcing beam 122 and the adhesive layer 6, thereby improving the stability between the adhesive layer 6 and the reinforcing beam 122 and preventing the adhesive layer 6 from falling off from the reinforcing beam 122.

Preferably, the reinforcing beam 122 is integrally formed with the support portion 12, and the integrally formed structure has high strength and is not easy to damage.

During installation, a plurality of electric cores 8 can be installed on the installation position 13, and in order to prevent short circuit from occurring between the electric cores 8, an insulating layer is arranged on the outer surface of the main body 1, so that insulation is formed between the main body 1 and the electric cores 8, and electric conductors between the electric cores 8 of the main body 1 are avoided. In the embodiment, an insulating layer is arranged on the surface of the main body 1 in a spraying mode, so that the process is simple, and the processing cost is low.

In this embodiment, as shown in fig. 1, the split bodies 7 are disposed at two opposite ends of the liquid cooling portion 11, a split cavity communicated with the liquid cooling flow channel 111 is disposed in the split bodies 7, a liquid inlet connector or a liquid outlet connector is disposed on a side wall of the split bodies 7, the liquid inlet connector and the liquid outlet connector are both communicated with the split cavity, the liquid inlet connector box is used for inputting cooling liquid, the split cavity is used for inputting the cooling liquid into the liquid cooling flow channel 111, the cooling liquid exchanges heat with the electric core 8 in the flowing process of the liquid cooling flow channel 111, so that the electric core 8 is cooled, then the cooling liquid flows into the split cavity at the other end from the liquid cooling flow channel 111, and the cooling liquid is discharged from the liquid outlet connector.

In an embodiment, the supporting portion 12 and the liquid cooling portion 11 are integrally formed, so that the integrally formed structure has high strength, is not easy to deform, and has a good bearing effect on the battery cell 8. After the support 12 and the liquid cooling portion 11 are integrally manufactured, the liquid cooling portion 11 is provided with a liquid cooling flow passage 111 penetrating in the longitudinal direction, and the liquid cooling portion 11 is provided with a split body 7 at both ends thereof to seal the liquid cooling flow passage 111, thereby forming a flow passage for circulating the cooling liquid.

Alternatively, the supporting portion 12 and the liquid cooling portion 11 are formed by extrusion of an aluminum plate, so that the liquid cooling portion 11 is a liquid cooling plate, the supporting portion 12 is a supporting plate, and the aluminum material is light in weight, so that the overall weight of the battery liquid cooling assembly can be reduced.

In yet another embodiment, as shown in fig. 8 and 9, the fixing member 3 further includes a connecting portion 33 and a second limiting portion 34, the second limiting portion 34 is spaced from the first fixing portion 31, the connecting portion 33 connects the second limiting portion 34 and the first fixing portion 31 to form a limiting groove 35, and the supporting portion 12 is partially disposed in the limiting groove 35, so as to increase the connecting area between the supporting portion 12 and the fixing member 3. In use of the battery pack, the second limiting portion 34 is generally located below the supporting portion 12, so that the main body 1 is supported by the second limiting portion 34, and stability of the whole battery liquid cooling assembly is improved.

Alternatively, as shown in fig. 8, the first side 121 is welded to the first fixing portion 31, the second side 123 is welded to the second limiting portion 34, and stability between the supporting portion 12 and the fixing member 3 is further improved by welding both sides of the supporting portion 12 to the fixing member 3. In the welding process, the supporting part 12 is inserted into the limiting groove 35, so that the supporting part 12 and the fixing part 3 are pre-fixed, and the fixing part 3 and the supporting part 12 are welded conveniently. In other embodiments, only the first side 121 may be welded to the first fixing portion 31, or the second side 123 may be welded to the second limiting portion 34.

Specifically, as shown in fig. 9 and 10, the second side 123 is provided with the reinforcing member 10, the second limiting portion 34 is provided with the welding groove 341, the welding groove 341 penetrates through one end surface of the second limiting portion 34 away from the second fixing portion 32, and the groove wall of the welding groove 341 is welded with the reinforcing member 10. Providing the stiffener 10 on the second side 123 can increase the strength of the support 12 and increase the load carrying capacity of the support 12. During welding, the wall of the welding groove 341 can limit the position of the reinforcing member 10, so as to prevent the support portion 12 from being deviated. And the connection stability between the fixing member 3 and the supporting portion 12 can be further improved after the reinforcement member 10 is welded to the wall of the welding groove 341.

Specifically, as shown in fig. 9, the stiffener 10 is a stiffener plate, the stiffener plate is integrally formed with the liquid cooling portion 11, the support portion 12 is provided with a relief hole penetrating the first side surface 121 and the second side surface 123, the liquid cooling portion 11 is inserted into the relief hole from the second side surface 123 and protrudes from the first side surface 121, and the stiffener plate is connected to the second side surface 123, so that the stiffener plate can strengthen the support portion 12.

Preferably, as shown in fig. 9, a heat insulator 9 is provided between the second fixing portion 32 and the mounting beam 2 to prevent the liquid cooling portion 11 from exchanging heat with the mounting beam 2 through the fixing member 3.

Preferably, the step surface 321 is concavely provided with a mounting groove, the heat insulating member 9 is a heat insulating plate, and the heat insulating plate is arranged in the mounting groove so as to store the heat insulating plate through the mounting groove, thereby avoiding the increase of the height of the battery pack due to the arrangement of the heat insulating plate. Specifically, the heat insulating member 9 is provided with a fourth fixing hole corresponding to each of the first fixing holes 322 so that the locking member 4 can sequentially pass through the first fixing holes 322, the fourth fixing holes and the second fixing holes 21 to fix the fixing member 3, the heat insulating member 9 and the mounting beam 2.

The utility model also provides a battery pack, as shown in fig. 11, which comprises a battery core 8, a battery box and the battery liquid cooling assembly of any embodiment, wherein the battery liquid cooling assembly is arranged in the battery box, and the battery core 8 is arranged on an installation position 13 of the battery liquid cooling assembly. This battery liquid cooling subassembly is through setting up main part 1 in one side of installation roof beam 2, and fixes main part 1 on installation roof beam 2 through mounting 3, therefore the height of installation roof beam 2 can not add up with the thickness of the supporting part 12 of main part 1, has reduced the installation space of battery liquid cooling subassembly in the battery box to increased the installation space of electric core 8 in the battery box, and then increased the energy density of the battery package that uses this battery liquid cooling subassembly.

Optionally, a heat-conducting glue is arranged between the battery cell 8 and the liquid cooling part 11, and a heat-conducting glue is arranged between the battery cell 8 and the supporting plate, so that the heat transfer efficiency of the battery cell 8 is increased by arranging the heat-conducting glue, and the heat dissipation efficiency is improved.

Specifically, structural adhesive is arranged between the battery cell 8 and the main body 1, so that the battery cell 8 and the main body 1 can be adhered through the structural adhesive, the stability of the battery cell 8 is improved, and the battery cell 8 is prevented from accidentally sliding.

In the description herein, it should be understood that the terms "upper," "lower," and the like are used for convenience in description and simplicity of operation only, and are not necessarily indicative or implying any particular orientation, configuration or operation of such apparatus or elements herein, and therefore should not be construed as limiting the present utility model.

In the description of the present specification, reference to the term "an embodiment" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in the foregoing embodiments, and that the embodiments described in the foregoing embodiments may be combined appropriately to form other embodiments that will be understood by those skilled in the art.

The technical principle of the present utility model is described above in connection with the specific embodiments. The description is made for the purpose of illustrating the general principles of the utility model and should not be taken in any way as limiting the scope of the utility model. Other embodiments of the utility model will be apparent to those skilled in the art from consideration of this specification without undue burden.

Claims (15)

1. The utility model provides a battery liquid cooling subassembly, its characterized in that, includes main part, installation roof beam and mounting, the main part includes liquid cooling portion and supporting part, liquid cooling portion with the supporting part is the contained angle and connects the installation position that forms to be used for installing the electric core, be provided with the liquid cooling runner in the liquid cooling portion, the opposite both ends of supporting part all are provided with the installation roof beam corresponds every the installation roof beam sets up at least one the mounting, the supporting part is connected a side of liquid cooling portion is first side, the mounting includes interconnect's first fixed part and second fixed part, first fixed part with first side is connected, the second fixed part protrusion in the periphery of first side, the second fixed part with the installation roof beam is connected.

2. The battery liquid cooling assembly according to claim 1, wherein a step surface is provided on a side surface of the second fixing portion facing the mounting beam, a distance between the step surface and the first side surface is L1, a distance between a side surface of the first fixing portion facing the first side surface and the first side surface is L2, L1 > L2, and the step surface abuts against the mounting beam.

3. The battery liquid cooling assembly of claim 1, further comprising a locking member, wherein the second fixing portion is provided with a first fixing hole, the mounting beam is provided with a second fixing hole corresponding to the first fixing hole, and the locking member passes through the first fixing hole and the second fixing hole to lock the fixing member to the mounting beam, wherein at least part of the first fixing hole is a waist-shaped hole.

4. The battery liquid cooling assembly of claim 1, wherein at least a portion of the second securing portion is snap-fit with the mounting beam.

5. The battery liquid cooling assembly according to claim 4, wherein at least part of the second fixing portion is provided with a third fixing hole in a penetrating manner, the third fixing hole comprises a first hole and a second hole which are communicated with each other, the size of the first hole is larger than that of the second hole, the mounting beam is provided with a limiting piece corresponding to the third fixing hole, one end, away from the mounting beam, of the limiting piece is provided with a first limiting portion, a clamping groove is formed between the first limiting portion and the mounting beam, the limiting piece can penetrate through the first hole, and the hole wall of the second hole is clamped in the clamping groove.

6. The battery liquid cooling assembly of any one of claims 1-5 wherein the support has a second side disposed opposite the first side, the second side being convexly provided with a stiffening beam.

7. The battery liquid cooling assembly of claim 6, wherein a side of the stiffening beam remote from the support is provided with an adhesive layer for adhering to a battery compartment.

8. The battery liquid cooling assembly of claim 7, wherein a side of the stiffening beam remote from the support portion is recessed with a glue injection slot, and the adhesive layer portion is disposed in the glue injection slot.

9. The battery liquid cooling assembly of any one of claims 1-5 wherein the first securing portion is welded to the support portion.

10. The battery liquid cooling assembly of any one of claims 1-5 wherein the surface of the body is sprayed with an insulating layer.

11. The battery liquid cooling assembly of any one of claims 1-5, wherein the fixture further comprises a connecting portion and a second limiting portion, the second limiting portion is spaced apart from the first fixing portion, the connecting portion connects the second limiting portion and the first fixing portion to form a limiting groove, and the supporting portion is partially disposed in the limiting groove.

12. The battery liquid cooling assembly of claim 11, wherein the support portion has a second side disposed opposite the first side;

the first side surface is welded with the first fixing part; and/or the number of the groups of groups,

the second side face is welded with the second limiting part.

13. The battery liquid cooling assembly of claim 12, wherein the second side is provided with a reinforcement, the second limiting portion is provided with a welding groove, the welding groove penetrates through an end face of the second limiting portion away from the second fixing portion, the reinforcement is partially disposed in the welding groove, and a groove wall of the welding groove is welded with the reinforcement.

14. The battery liquid cooling assembly of any one of claims 1-5 wherein a thermal insulator is disposed between the second securing portion and the mounting beam.

15. A battery pack comprising a battery cell and a battery box, and further comprising the battery liquid cooling assembly of any one of claims 1-14, wherein the battery liquid cooling assembly is disposed in the battery box, and the battery cell is disposed on an installation site of the battery liquid cooling assembly.