CN213340555U - Battery box and battery package - Google Patents

Abstract

The utility model discloses a battery box and battery package, this battery box include body, bottom plate, feed liquor pipe and drain pipe, are equipped with the cooling bath on the diapire of body, are equipped with inlet channel and liquid outlet channel on the lateral wall of body, and inlet channel and liquid outlet channel communicate with the cooling bath respectively, and the bottom plate lock is in order to seal the cooling bath on the body, and the feed liquor union coupling is on the body and continuous with inlet channel, and the drain pipe is connected on the body and is continuous with liquid outlet channel. The heating and cooling system and the relevant joint of the battery pack are integrated on the battery box body, the assembly structure inside the battery pack is simplified, and the space utilization rate and the assembly efficiency of the battery pack are improved.

Description

Battery box and battery package

Technical Field

The utility model relates to an energy equipment technical field especially relates to a battery box and battery package.

Background

With the development of new energy automobiles, electric automobiles have gradually become the main vehicles for people to ride instead of walk in daily life. The power of the electric automobile is mainly derived from a battery system. When the battery pack generates heat in the use process, the temperature range of the battery pack is between-10 ℃ and 60 ℃, and in order to ensure the effective and safe work of a battery system, a heating and cooling system is added in the battery pack, so that the requirement of the temperature use range is met.

At present, a heating and cooling system of a battery system in the industry is of an independent structure in a battery pack, the connection is complex, and the workload of manual assembly is increased. And the heating and cooling system pipelines, the cold plate installation gap requirements and the like need to be considered independently in the design.

SUMMERY OF THE UTILITY MODEL

A first object of the utility model is to provide a battery box, integrated heating, cooling system and the relevant joint of battery package on this battery box, simplified the inside assembly structure of battery package, promoted the space utilization and the packaging efficiency of battery package.

A second object of the present invention is to provide a battery pack, which has a high space utilization rate and a high assembling efficiency.

For realizing the above technical effect, the technical scheme of the utility model as follows:

the utility model discloses a battery box, include: the cooling device comprises a body, wherein a cooling groove is formed in the bottom wall of the body, a liquid inlet channel and a liquid outlet channel are formed in the side wall of the body, and the liquid inlet channel and the liquid outlet channel are respectively communicated with the cooling groove; the bottom plate is buckled on the body to seal the cooling groove; the liquid inlet pipe is connected to the body and is connected with the liquid inlet channel; the liquid outlet pipe is connected to the body and connected with the liquid outlet channel.

In some embodiments, the bottom wall of the body is further provided with an assembly groove arranged around the cooling groove, the bottom plate is fitted in the assembly groove, and the edge of the bottom plate is connected with the edge of the assembly groove in a welding manner.

In some embodiments, a first rib is arranged in the cooling groove, the first rib extends along the length direction of the body, and the liquid inlet of the liquid inlet channel and the cooling groove and the liquid outlet of the liquid outlet channel and the cooling groove are respectively located at two sides of the first rib.

In some specific embodiments, a second rib is further disposed in the cooling groove, and the second rib is located on a side of the first rib away from the liquid inlet pipe and the liquid outlet pipe.

In some more specific embodiments, the second rib is a U-shaped rib, and one end of the first rib is inserted into the opening of the U-shaped rib.

In some embodiments, the cooling tank is further provided with a plurality of liquid separating bulges, and the liquid separating bulges are distributed in a plurality of rows and a plurality of columns.

In some embodiments, the liquid inlet pipe is located above the liquid outlet pipe, the liquid outlet channel extends along the height direction of the body, and the liquid inlet channel is obliquely arranged in a direction from top to bottom and towards a direction far away from the liquid inlet pipe.

In some embodiments, the bottom wall of the body is provided with a plurality of avoiding holes arranged around the cooling groove.

In some embodiments, a plurality of avoidance slots are provided on the bottom plate.

The utility model discloses still a battery package, including the foretell battery box.

The utility model discloses a battery box, because be equipped with the cooling bath on the diapire of body, and be equipped with inlet channel and liquid outlet channel on the lateral wall to be equipped with the bottom plate that seals the cooling bath, need not to reserve the space of installation cold drawing at box inside, promoted battery box's space utilization. Because the box is provided with the liquid inlet pipe and the liquid outlet pipe, an additional cold plate pipeline connecting structure is reduced, the assembly process of the battery box is simplified, and the production cost of the battery box is improved.

The utility model discloses a battery pack, owing to have in the preamble the battery box, promoted the space utilization and the packaging efficiency of battery pack.

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

Drawings

Fig. 1 is a schematic structural diagram of a battery box according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of the battery case according to the embodiment of the present invention in another direction.

Fig. 3 is an exploded view of the battery case according to the embodiment of the present invention.

Fig. 4 is a schematic structural view of the battery box according to the embodiment of the present invention with the bottom plate removed.

Fig. 5 is a sectional view of a battery case according to an embodiment of the present invention.

Reference numerals:

1. a body; 11. a cooling tank; 12. a liquid inlet channel; 13. a liquid outlet channel; 14. assembling a groove; 15. a first rib; 16. a second rib; 17. liquid separation bulges; 18. avoiding holes;

2. a base plate; 21. an avoidance groove;

3. a liquid inlet pipe; 31. a liquid inlet;

4. a liquid outlet pipe; 42. and a liquid outlet.

Detailed Description

In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the technical solution of the present invention will be further explained by combining the drawings and by means of the specific implementation manner.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, features defined as "first" and "second" may explicitly or implicitly include one or more of the features for distinguishing between descriptive features, non-sequential, non-trivial and non-trivial. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The structure of the battery case according to the embodiment of the present invention is described below with reference to fig. 1 to 5.

As shown in fig. 1-5, the utility model discloses a battery box, this battery box includes body 1, bottom plate 2, feed liquor pipe 3 and drain pipe 4, be equipped with cooling bath 11 on the diapire of body 1, be equipped with inlet channel 12 and drain channel 13 on the lateral wall of body 1, inlet channel 12 and drain channel 13 communicate with cooling bath 11 respectively, 2 locks of bottom plate are in order to seal cooling bath 11 on body 1, feed liquor pipe 3 is connected on body 1 and is continuous with inlet channel 12, drain pipe 4 is connected on body 1 and links to each other with drain channel 13.

It will be understood that the cooling bath 11 is formed directly on the body 1 and the inlet passage 12 and the outlet passage 13 communicating with the cooling bath 11 are formed directly on the side wall of the body 1. That is to say, directly be formed with the liquid temperature control system that is used for cooling or keeps warm electric core in the battery package on the battery box of this embodiment, compare prior art, the water cooling system in the battery package and the mutually independent technical scheme of battery box, the additional connection structure of the battery box of this embodiment is still less, and assembly process is simpler, and space utilization is higher.

Meanwhile, the liquid outlet pipe 4 and the liquid inlet pipe 3 are connected to the body 1, so that the pipeline connecting structure is further reduced, and the assembly process of the battery box is further simplified.

The utility model discloses battery box because be equipped with cooling bath 11 on the diapire of body 1, and be equipped with inlet channel 12 and liquid outlet channel 13 on the lateral wall to be equipped with the bottom plate 2 that seals cooling bath 11, need not to reserve the space of installation cold drawing at the box is inside, promoted battery box's space utilization. Because the liquid inlet pipe 3 and the liquid outlet pipe 4 are arranged on the box body, an additional cold plate pipeline connecting structure is reduced, the assembling process of the battery box body is simplified, and the production cost of the battery box body is improved.

Optionally, feed liquor pipe 3 and drain pipe 4 welded connection are on body 1, can promote feed liquor pipe 3 and drain pipe 4 and body 1's stability of being connected and connection leakproofness like this, avoid the phenomenon of the coolant liquid seepage in the cooling bath 11 to take place.

Optionally, feed liquor pipe 3 and drain pipe 4 and body 1 integrated into one piece compare with the technical scheme of feed liquor pipe 3 and the welding of drain pipe 4 on body 1, feed liquor pipe 3 and drain pipe 4 and body 1 integrated into one piece can save feed liquor pipe 3 and drain pipe 4 and body 1's connection technology to further promote the packaging efficiency of battery box.

In some embodiments, the bottom wall of the body 1 is further provided with a mounting groove 14 surrounding the cooling groove 11, the bottom plate 2 is fitted in the mounting groove 14, and the edge of the bottom plate 2 is welded to the edge of the mounting groove 14. It can be understood that, the bottom plate 2 is fitted in the fitting groove 14, which improves the connection stability and connection sealing performance of the bottom plate 2 and the body 1, and avoids the leakage of the cooling liquid in the cooling groove 11 from the mounting gap between the bottom plate 2 and the body 1. And the edge of the bottom plate 2 is welded with the edge of the assembly groove 14, so that the connection sealing performance and the connection stability of the bottom plate 2 and the body 1 can be further improved.

Advantageously, the edges of the base plate 2 are connected to the edges of the fitting groove 14 by means of friction welding. It can be understood that friction welding has the advantages of good and stable joint quality, high welding efficiency, energy conservation, material conservation, low consumption and the like, adopts the friction welding mode to connect the bottom plate 2 and the body 1, improves the welding quality of the bottom plate 2 and the body 1, reduces the welding energy consumption and improves the welding efficiency. Of course, in other embodiments of the present invention, the bottom plate 2 and the body 1 may be connected by soldering, argon arc welding, or the like. In addition, the bottom plate 2 and the body 1 may be connected by riveting, bonding, etc., and are not limited to the welding of the embodiment.

In some embodiments, as shown in fig. 3-4, a first rib 15 is disposed in the cooling groove 11, the first rib 15 extends along the length direction of the body 1, and the liquid inlet 31 of the liquid inlet channel 12 communicating with the cooling groove 11 and the liquid outlet 42 of the liquid outlet channel 13 communicating with the cooling groove 11 are respectively located at two sides of the first rib 15. It will be appreciated that, since the liquid inlet 31 and the liquid outlet 42 are located on both sides of the first rib 15, the liquid must bypass the first rib 15 after entering the cooling bath 11 through the liquid inlet 31 of the liquid inlet channel 12 to be able to flow from the liquid outlet 42 to the liquid outlet channel 13. That is, the first ribs 15 extend the flow path of the cooling liquid in the cooling groove 11, so that the cooling liquid can better cool the battery cell during use.

Advantageously, the lower surface of the first bead 15 rests on the bottom plate 2. It can be understood that, because the lower surface of the first rib 15 is stopped against the bottom plate 2, no gap exists between the first rib 15 and the bottom plate 2, so that the coolant can be prevented from passing through the first rib 15 from the gap between the first rib 15 and the bottom plate 2, thereby having an adverse effect on the cooling effect of the coolant.

It should be noted that the shape, size and dimension of the first rib 15 can be selected according to actual needs, and various parameters of the first rib 15 are not limited herein.

In some embodiments, as shown in fig. 3-4, a second rib 16 is further disposed in the cooling trough 11, and the second rib 16 is located on a side of the first rib 15 away from the liquid inlet pipe 3 and the liquid outlet pipe 4. It can be understood that the second rib 16 that adds can play the effect of guide coolant liquid from one side of first rib 15 to the opposite side to avoid the coolant liquid to pile up and lead to the inhomogeneous phenomenon of cooling to appear in the electric core of battery box in one side of first rib 15.

Advantageously, the lower surface of the second bead 16 rests on the bottom plate 2. It can be understood that, because the lower surface of the second rib 16 is stopped against the bottom plate 2, no gap is formed between the second rib 16 and the bottom plate 2, so that the coolant can be prevented from passing through the second rib 16 from the gap between the second rib 16 and the bottom plate 2, thereby having an adverse effect on the cooling effect of the coolant.

In some more specific embodiments, as shown in fig. 3-4, the second rib 16 is a U-shaped rib, and one end of the first rib 15 is inserted into an opening of the U-shaped rib. Therefore, the guiding effect of the second ribs 16 on the cooling liquid can be improved, and the battery cell in the battery box can be stably cooled. Of course, in other embodiments of the present invention, the actual shape of the second rib 16 can be arbitrarily selected according to actual needs, and is not limited to the U-shaped rib of this embodiment.

In some embodiments, as shown in fig. 3-4, the cooling tank 11 is further provided with a plurality of liquid separating protrusions 17, and the liquid separating protrusions 17 are distributed in a plurality of rows and a plurality of columns. It can be understood that, the liquid separating protrusion 17 in the cooling tank 11 can make the cooling liquid flow uniformly in the cooling tank 11, so as to improve the cooling effect on the battery cell and avoid the phenomenon of non-uniform cooling.

Advantageously, the lower surface of the dispensing projection 17 rests on the bottom plate 2. It can be understood that, because the lower surface of the liquid separating protrusion 17 is stopped on the bottom plate 2, no gap is formed between the liquid separating protrusion 17 and the bottom plate 2, and thus, the coolant can be prevented from passing through the liquid separating protrusion 17 from the gap between the liquid separating protrusion 17 and the bottom plate 2, and the cooling effect of the coolant can be prevented from being adversely affected.

It should be added that the shape and size of the separating projection 17 of the present embodiment can be selected according to actual needs, and various parameters of the separating projection 17 are not limited herein.

In some embodiments, as shown in fig. 1 and 5, the liquid inlet pipe 3 is located above the liquid outlet pipe 4, the liquid outlet channel 13 extends along the height direction of the body 1, and the liquid inlet channel 12 is inclined in the direction from top to bottom toward the direction away from the liquid inlet pipe 3. It can be understood that feed liquor pipe 3 and drain pipe 4 are located the same edge of the same lateral wall of body 1, have made things convenient for and have received external pipeline to feed liquor pipe 3 and drain pipe 4 on, have simplified the tube coupling, have promoted the packaging efficiency of battery box.

Of course, in other embodiments, the positions of the liquid inlet pipe 3 and the liquid outlet pipe 4 may be set at any position on the side wall of the body 1 according to actual needs, and are not limited to the above description.

In some embodiments, as shown in fig. 2-3, the bottom wall of the body 1 is provided with a plurality of relief holes 18 disposed around the cooling slot 11. It can be understood that, in the actual use process, the additionally arranged avoidance hole 18 can reduce the contact area between the whole battery box body and the supporting surface, so that the heat loss of the cooling liquid in the cooling tank 11 is reduced, and the battery core in the battery box body can be ensured to work at a proper temperature all the time.

It should be noted that the shape and the number of the avoidance holes 18 may be selected according to actual needs, and the specific shape and distribution of the avoidance holes 18 are not limited herein.

In some embodiments, as shown in fig. 2-3, the base plate 2 is provided with a plurality of escape slots 21. It can be understood that, in the actual use process, the additionally-arranged avoidance groove 21 can reduce the contact area between the whole battery box body and the supporting surface, so that the heat loss of the cooling liquid in the cooling groove 11 is reduced, and the battery cell in the battery box body can be ensured to work at a more appropriate temperature all the time.

It should be noted that the shape and the number of the avoiding grooves 21 may be selected according to actual needs, and the specific shape and distribution of the avoiding grooves 21 are not limited herein.

Example (b):

as shown in fig. 1-5, the battery box of this embodiment includes a body 1, a bottom plate 2, a liquid inlet pipe 3 and a liquid outlet pipe 4, a cooling groove 11 and an assembly groove 14 surrounding the cooling groove 11 are disposed on the bottom wall of the body 1, a first rib 15, a second rib 16 and a liquid separating protrusion 17 are disposed in the cooling groove 11, and the first rib 15 extends along the length direction of the body 1. The second rib 16 is located on one side of the first rib 15 away from the liquid inlet pipe 3 and the liquid outlet pipe 4. The second rib 16 is a U-shaped rib, and one end of the first rib 15 is inserted into an opening of the U-shaped rib. The liquid separating bulges 17 are distributed in a plurality of rows and a plurality of columns, and the number of the liquid separating bulges 17 in each row can be 2, 3 or 4.

The side wall of the body 1 is provided with a liquid inlet channel 12 and a liquid outlet channel 13, the liquid inlet channel 12 and the liquid outlet channel 13 are respectively communicated with the cooling groove 11, and a liquid inlet 31 of the liquid inlet channel 12 communicated with the cooling groove 11 and a liquid outlet 42 of the liquid outlet channel 13 communicated with the cooling groove 11 are respectively positioned at two sides of the first convex rib 15. The liquid outlet channel 13 extends along the height direction of the body 1, and the liquid inlet channel 12 is inclined towards the direction far away from the liquid inlet pipe 3 in the direction from top to bottom. The liquid inlet pipe 3 is integrally formed on the body 1 and connected with the liquid inlet channel 12, and the liquid outlet pipe 4 is integrally formed on the body 1 and connected with the liquid outlet channel 13. A plurality of avoidance holes 18 arranged around the cooling groove 11 are arranged on the bottom wall of the body 1, and the avoidance holes 18 are oblong.

The base plate 2 is fitted in the fitting groove 14, and the edge of the base plate 2 is welded to the edge of the fitting groove 14. The upper surface of the bottom plate 2 stops against the lower surfaces of the first ribs 15, the second ribs 16 and the liquid separating bulges 17. The bottom wall of the bottom plate 2 is provided with three avoidance grooves 21 which are arranged at intervals and extend along the length direction of the body 1.

The battery box of this application's advantage as follows:

firstly, the method comprises the following steps: a water cooling system installation space is not required to be reserved in the battery box body, so that the space utilization rate of the battery box body is improved;

secondly, the method comprises the following steps: the liquid outlet pipe 4 and the liquid inlet pipe 3 are integrally formed on the body 1, so that the complex connection among pipelines is simplified, and the assembly efficiency of the battery box body is improved;

thirdly, the method comprises the following steps: the cooling groove 11 is internally provided with the first convex rib 15, the second convex rib 16 and the liquid separating bulge 17, so that the flow path of the cooling liquid in the cooling groove 11 is prolonged, the uniformity of the cooling liquid is improved, and the cooling efficiency of the battery cell is improved;

fourthly: the avoiding hole 18 on the body 1 and the avoiding groove 21 on the bottom plate 2 reduce the contact area between the battery box body and the supporting surface, reduce the heat loss of the cooling liquid in the cooling groove 11, and improve the heat preservation efficiency of the cooling liquid after heat exchange to the battery core.

The utility model also discloses a battery package, battery box including before.

The utility model discloses a battery pack, owing to have in the preamble the battery box, promoted the space utilization and the packaging efficiency of battery pack.

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

The above description is only for the preferred embodiment of the present invention, and for those skilled in the art, there are variations on the detailed description and the application scope according to the idea of the present invention, and the content of the description should not be construed as a limitation to the present invention.

Claims (10)

1. A battery case, comprising:

the cooling device comprises a body (1), wherein a cooling groove (11) is formed in the bottom wall of the body (1), a liquid inlet channel (12) and a liquid outlet channel (13) are formed in the side wall of the body (1), and the liquid inlet channel (12) and the liquid outlet channel (13) are respectively communicated with the cooling groove (11);

a bottom plate (2), wherein the bottom plate (2) is buckled on the body (1) to seal the cooling groove (11);

the liquid inlet pipe (3) is connected to the body (1) and is connected with the liquid inlet channel (12);

the liquid outlet pipe (4) is connected to the body (1) and connected with the liquid outlet channel (13).

2. The battery box body according to claim 1, wherein the bottom wall of the body (1) is further provided with a mounting groove (14) surrounding the cooling groove (11), the bottom plate (2) is fitted in the mounting groove (14), and the edge of the bottom plate (2) is welded with the edge of the mounting groove (14).

3. The battery box body as claimed in claim 1, wherein a first rib (15) is provided in the cooling groove (11), the first rib (15) extends along the length direction of the body (1), and a liquid inlet (31) of the liquid inlet channel (12) communicated with the cooling groove (11) and a liquid outlet (42) of the liquid outlet channel (13) communicated with the cooling groove (11) are respectively located at two sides of the first rib (15).

4. The battery box body according to claim 3, wherein a second rib (16) is further arranged in the cooling groove (11), and the second rib (16) is located on one side of the first rib (15) far away from the liquid inlet pipe (3) and the liquid outlet pipe (4).

5. The battery box body as claimed in claim 4, wherein the second rib (16) is a U-shaped rib, and one end of the first rib (15) is inserted into an opening of the U-shaped rib.

6. The battery box body according to claim 1, wherein a plurality of liquid separating bulges (17) are further arranged in the cooling groove (11), and the liquid separating bulges (17) are distributed in a plurality of rows and a plurality of columns.

7. The battery box body as claimed in claim 1, wherein the liquid inlet pipe (3) is located above the liquid outlet pipe (4), the liquid outlet channel (13) extends along the height direction of the body (1), and the liquid inlet channel (12) is inclined towards the direction away from the liquid inlet pipe (3) in the direction from top to bottom.

8. The battery box body according to claim 1, wherein a plurality of avoiding holes (18) are formed on the bottom wall of the body (1) and surround the cooling groove (11).

9. The battery box according to claim 1, characterized in that the bottom plate (2) is provided with a plurality of escape grooves (21).

10. A battery pack characterized by comprising the battery case according to any one of claims 1 to 9.

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