Battery box compatible with top-bottom liquid cooling form and track battery pack

Abstract

The utility model relates to the technical field of batteries, in particular to a battery box compatible with a top-bottom liquid cooling form, which comprises a box body for placing a battery cell, the top and the bottom of the box body are arranged in a penetrating manner; wherein the top and the bottom of the box body are respectively provided with a cover plate and a bottom plate, the cover plate and the bottom plate are both detachably connected with the box body, and the cover plate and / or the bottom plate are arranged to be liquid cooling plates. During actual use, a customer can replace the cover plate and / or the bottom plate with another liquid cooling plate according to the actual liquid cooling requirement of a product, so that the actual heat dissipation requirement of the product is met, the workload of customized development is reduced, the production time and the manpower and material resource cost are effectively reduced, the product meets the high-standard performance requirement in the field of rail transit, and the production cost is reduced. And the existing structure of the product can be used as the basis according to different requirements of customers.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a battery box and a track battery pack compatible with top-bottom liquid cooling forms. Background Technique

[0002] The temperature sensitivity window of power batteries has become increasingly obvious, resulting in serious impacts on the performance, safety and cycle life of power batteries. The safety of battery packs has received more and more attention. The existing cooling methods for power batteries mainly include liquid cooling and air cooling under natural convection. Air cooling under natural convection is greatly affected by the ambient temperature, and its heat dissipation effect is worse than that of liquid cooling. The normal operation of the cooling system is an important measure to ensure the safety of the battery pack efficiently. Therefore, liquid cooling of power battery packs is an inevitable development trend.

[0003] For a power storage battery pack with a top-bottom double-sided liquid cooling form, its box body and the bottom liquid cooling plate are usually integrally designed, and the top liquid cooling plate needs to be designed separately, which is equivalent to the upper cover of the battery pack. For example, a liquid-cooled power battery pack for electric vehicles disclosed in Chinese Patent Publication No. "CN108461681B" mainly includes a liquid cooling plate, a box body, and a BMS device installed in the middle of the liquid cooling plate.

[0004] However, for the power storage battery pack adopting the above design, its structural compatibility is poor, the product is not easy to be derived, and it is usually applied to the automotive field, which does not meet the requirements of the rail transit industry for high safety and high reliability of power storage battery packs. Content of the Utility Model

[0005] The purpose of the utility model is to solve the disadvantages in the prior art, such as poor structural compatibility, difficulty in product derivation, and usually being applied to the automotive field, and to propose a battery box and a track battery pack compatible with top-bottom liquid cooling forms.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] Design a battery box compatible with top-bottom liquid cooling forms, including:

[0008] A box body for placing battery cells;

[0009] A through setting is arranged between the top and the bottom of the box body;

[0010] Wherein, a cover plate and a bottom plate are respectively arranged at the top and the bottom of the box body, both the cover plate and the bottom plate are detachably connected to the box body, and the cover plate and / or the bottom plate are set as liquid cooling plates.

[0011] Further, the box body includes a surrounding frame body, and upper connecting edges are arranged at the top edge and / or the bottom edge of the surrounding frame body;

[0012] The two upper connecting edges of the top edge and the bottom edge are horizontally arranged and extend towards the outer side of the surrounding frame body.

[0013] Furthermore, it further includes side connecting edges which are arranged on the outer side of the surrounding frame body and are parallel to one side surface of the surrounding frame body;

[0014] The side connecting edges are located between the two upper connecting edges of the top edge and the bottom edge.

[0015] Furthermore, mounting hooks are arranged on both side surfaces of the box body, and at least two mounting hooks are arranged on each side surface.

[0016] Furthermore, a ground wire interface is also arranged on the outer side of the box body.

[0017] Furthermore, a plurality of holes are opened on the side surface of the box body, and the plurality of holes are used for installing components.

[0018] Furthermore, an adaptation edge extends on the outer sides of the cover plate and the bottom plate, the adaptation edge is used for fitting the upper connecting edge, and the adaptation edge and the upper connecting edge are connected by fasteners.

[0019] Furthermore, the thicknesses of the box body, the cover plate and the bottom plate are not less than two millimeters.

[0020] Furthermore, insulating coatings are sprayed on the surfaces of the box body, the cover plate and the bottom plate.

[0021] In addition, the present utility model also proposes a track battery pack, including:

[0022] a battery cell and the battery box as described above;

[0023] The battery cell is placed inside the box body, and components electrically connected to the battery cell are also installed on the outer side of the box body.

[0024] For the battery box and the track battery pack compatible with the top-bottom liquid cooling form proposed by the present utility model, the beneficial effects are as follows: in the present utility model, the bottom plate and the box body adopt a split design, each is independently designed, not integrated as a whole. During actual use, customers can replace the cover plate and / or the bottom plate with another liquid cooling plate according to the actual liquid cooling requirements of the product to achieve the actual heat dissipation requirements of the product, reducing the workload of customized development. In this way, the production time, labor and material costs are effectively reduced. Secondly, the product meets the high-standard performance requirements in the rail transit field. Based on the existing structure of the product, standardized and serialized products can be gradually derived according to different customer requirements in the future. Description of the Drawings

[0025] Figure 1Schematic structural diagram of the present utility model;

[0026] Figure 2 Stereogram of the present utility model;

[0027] Figure 3 Schematic structural diagram of the liquid cooling plate of the present utility model.

[0028] In the figure: 1, box body; 10, battery cell; 11, surrounding frame body; 12, upper connecting edge; 13, side connecting edge; 14, mounting hook; 15, ground wire interface; 16, hole position; 2, cover plate; 21, adapting edge; 3, bottom plate; 4, components. Specific implementation manner

[0029] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0030] Referring to Figures 1-3 One embodiment of the present utility model discloses a battery box compatible with top and bottom liquid cooling forms. Specifically, the battery box includes a box body 1 for placing battery cells 10;

[0031] A through setting is provided between the top and the bottom of the box body 1;

[0032] Among them, a cover plate 2 and a bottom plate 3 are respectively arranged at the top and the bottom of the box body 1. Both the cover plate 2 and the bottom plate 3 are detachably connected to the box body 1. In this embodiment, the detachable connection method can be carried out by fasteners such as bolts. The cover plate 2 and / or the bottom plate 3 are set as liquid cooling plates.

[0033] Referring to Figure 3 , specifically, the structure of the liquid cooling plate is the prior art. It realizes the flow guidance of the coolant through the serpentine flow channels arranged inside and cooperates with two joints. Those skilled in the art can master this part of the structure without technical obstacles and will not be elaborated here.

[0034] That is, in this embodiment, the bottom plate 3 and the box body 1 are designed in a split manner, independently designed, not integrated. During actual use, customers can replace the cover plate 2 with another liquid cooling plate according to the product's top and bottom liquid cooling requirements to achieve double-sided liquid cooling at the top and bottom of the product, reducing the workload of customized development, thus effectively reducing the production time, labor and material costs.

[0035] In some embodiments, the box body 1 in the present utility model includes a surrounding frame body 11, and an upper connecting edge 12 is arranged at the top edge and / or the bottom edge of the surrounding frame body 11;

[0036] The two upper connecting edges 12 of the top edge and the bottom edge are horizontally arranged and extend towards the outer side surface of the surrounding frame body 11. It should be noted that in this embodiment, the upper connecting edge 12 is perpendicular to the side edge of the surrounding frame body 11, and the upper connecting edge 12 is located on the side edge of the surrounding frame body 11.

[0037] Furthermore, in this embodiment, there is also a side connecting edge 13, which is arranged outside the surrounding frame body 11 and is parallel to one side surface of the surrounding frame body 11;

[0038] The side connecting edge 13 is located between the two upper connecting edges 12 of the top edge and the bottom edge, and an installation hole is also provided on the side connecting edge 13, the purpose of which is to install and fix the entire box body 1.

[0039] In some embodiments, installation hooks 14 are provided on both side surfaces of the box body 1 of the present utility model, and at least two installation hooks 14 are provided on each side surface.

[0040] In addition, a ground wire interface 15 is provided on the outer side of the box body 1. The provided ground wire interface 15 is intended to provide equipment grounding to ensure the safety during the use of the equipment. By grounding the equipment, damage caused by static electricity or other electrical faults can be prevented, and at the same time, the safety of the user and the equipment is protected. Preferably, the ground wire interface 15 in this embodiment adopts a terminal structure.

[0041] Furthermore, in this embodiment, a plurality of holes 16 are also provided on the side surface of the box body 1. The plurality of holes 16 are used for installing components 4. A plurality of holes 16 are provided, which are respectively used to adapt to the above-mentioned various components. In addition, the size and position of the holes 16 can be flexibly adjusted according to different customer requirements, and based on the existing structure of this product, standardized and serialized products will be gradually derived subsequently.

[0042] On the basis of the above embodiment, an adaptation edge 21 also extends on the outer sides of the cover plate 2 and the bottom plate 3. The adaptation edge 21 is used to fit the upper connecting edge 12, and the adaptation edge 21 and the upper connecting edge 12 are connected by fasteners. The fasteners are set as bolts, and the bolts are circumferentially distributed along the outer side of the adaptation edge 21 to achieve a firm connection. Of course, in other embodiments, the fasteners can also adopt bonding or clamping methods.

[0043] It should be noted that in this embodiment, the thicknesses of the box body 1, the cover plate 2, and the bottom plate 3 are not less than two millimeters. Such plate members are used to process the corresponding box body 1, cover plate 2, and bottom plate 3 to ensure that the product can meet the performance requirements at the track level. In addition, the surfaces of the box body 1, cover plate 2, and bottom plate 3 are all sprayed with an insulating coating, such as polyethylene, polyvinyl chloride, epoxy resin, etc., to improve the overall electrical protection performance.

[0044] In addition, a track battery pack is also proposed in the present utility model, including:

[0045] the battery cells 10 and the above-mentioned battery box;

[0046] The battery cells 10 are placed inside the box body 1, and components 4 electrically connected to the battery cells 10 are also installed outside the box body 1.

[0047] The above is only the preferred specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, makes equivalent substitutions or changes, and should be covered within the protection scope of the present utility model.

Claims

1. A battery box compatible with top and bottom liquid cooling, characterized in that: include: A box (1) for accommodating a battery cell (10); The box body (1) is provided between the top and the bottom; A cover plate (2) and a bottom plate (3) are respectively arranged at the top and bottom of the box body (1); the cover plate (2) and the bottom plate (3) are both detachably connected to the box body (1); and the cover plate (2) and / or the bottom plate (3) are configured as liquid cooling plates.

2. A battery box compatible with top and bottom liquid cooling according to claim 1, characterized in that: The box body (1) comprises a surrounding frame (11), and an upper connecting edge (12) is provided on the top edge and / or the bottom edge of the surrounding frame (11); The two upper connecting edges (12) of the top edge and the bottom edge are arranged horizontally and extend toward the outer side surface of the surrounding frame (11).

3. A battery box compatible with top and bottom liquid cooling according to claim 2, characterized in that: It also includes a side connecting edge (13), wherein the side connecting edge (13) is arranged on the outside of the surrounding frame (11) and is parallel to a side surface of the surrounding frame (11); The side connecting edge (13) is located between the two upper connecting edges (12) of the top edge and the bottom edge.

4. A battery box compatible with top and bottom liquid cooling according to claim 1, characterized in that: Mounting hooks (14) are arranged on both side surfaces of the box body (1), and at least two mounting hooks (14) are arranged on each side surface.

5. The battery box compatible with top and bottom liquid cooling according to claim 1, characterized in that: A ground wire interface (15) is also provided on the outer side of the box body (1).

6. A battery box compatible with top and bottom liquid cooling according to claim 1, characterized in that: A plurality of holes (16) are also provided on the side of the box body (1), and the plurality of holes (16) are used for installing components (4).

7. A battery box compatible with top and bottom liquid cooling according to claim 2, characterized in that: An adapting edge (21) is further extended from the outer sides of the cover plate (2) and the bottom plate (3), and the adapting edge (21) is used to fit the upper connecting edge (12). The adapting edge (21) and the upper connecting edge (12) are connected via fasteners.

8. A battery box compatible with top and bottom liquid cooling according to claim 7, characterized in that: The thickness of the box body (1), the cover plate (2) and the bottom plate (3) is not less than two millimeters.

9. The battery box compatible with top and bottom liquid cooling according to claim 1, characterized in that: The surfaces of the box body (1), the cover plate (2) and the bottom plate (3) are all sprayed with an insulating coating.

10. A track battery pack, characterized in that: include: A battery cell (10) and a battery box as claimed in any one of claims 1 to 9; The battery core (10) is placed inside the box (1), and components (4) electrically connected to the battery core (10) are also installed on the outside of the box (1).

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