Side face liquid cooling energy storage battery pack structure

Abstract

The utility model relates to the technical field of liquid-cooled energy storage battery packs, in particular to a side liquid-cooled energy storage battery pack structure, which comprises a first liquid-cooled part, a second liquid-cooled part and a plurality of liquid-cooled plates, the first liquid-cooled part, the second liquid-cooled part and the liquid-cooled plates are all hollow structures, the plurality of liquid-cooled plates are arranged in parallel at intervals, and battery cells are arranged between adjacent liquid-cooled plates. One end of each liquid cooling plate is connected with the first liquid cooling part, the other end of each liquid cooling plate is connected with the second liquid cooling part, and the first liquid cooling part, the multiple liquid cooling plates and the second liquid cooling part are internally communicated and form an I-shaped structure; the first liquid cooling part and the second liquid cooling part are in close contact with the side surface of the battery cell, so that the battery cell can be cooled in a larger area, the middle-upper area of the battery cell can be effectively cooled, the cooling efficiency of the liquid cooling system can be greatly improved, and the first liquid cooling part, the liquid cooling plate and the second liquid cooling part are internally communicated and form an I-shaped structure; the structural rigidity of the energy storage battery pack box body can be increased, so that the anti-seismic reliability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid-cooled energy storage battery packs, in particular to a side liquid-cooled energy storage battery pack structure. Background Art

[0002] At present, liquid cooling is mainly adopted for the thermal management of new energy vehicles. The liquid cooling method mainly designs a liquid cooling plate at the bottom of the battery cell for heat dissipation from the bottom of the battery cell. The disadvantages of heat dissipation from the bottom of the battery cell are obvious. This cooling solution only dissipates heat locally at the bottom of the battery cell, and the liquid cooling area is small. Since the size of the battery cell structure in the height direction is large, it is difficult for this cooling solution to effectively dissipate heat from the middle and upper regions of the battery cell, which limits the cooling efficiency. In addition, for the battery pack with this bottom heat dissipation structure, due to the lack of transverse or longitudinal stiffening rib structures, the structural stiffness of its lower box body is weak, and it is inevitable to vibrate during the driving of the vehicle, resulting in a short service life of the battery pack. The patent document with the application number 201921419254.1 discloses a new type of integrated liquid-cooled battery tray, which discloses a closed frame, a bottom plate, a plurality of fixed beams and heat insulation cotton; the bottom plate is connected to the bottom of the frame, and a liquid cooling channel is arranged on the bottom plate. The battery tray in this solution can only dissipate heat locally at the bottom of the battery cell and lacks transverse or longitudinal stiffening rib structures, resulting in low cooling efficiency. Content of the Utility Model

[0003] In order to solve the above technical problems existing in the prior art, the utility model provides a side liquid-cooled energy storage battery pack structure.

[0004] In order to achieve the above object, the utility model provides a side liquid-cooled energy storage battery pack structure, including: a first liquid cooling part, a second liquid cooling part and a plurality of liquid cooling plates. The first liquid cooling part, the second liquid cooling part and the liquid cooling plates are all of hollow structures. The plurality of liquid cooling plates are arranged in parallel at intervals, and battery cells are arranged between adjacent liquid cooling plates. One end of the liquid cooling plate is connected to the first liquid cooling part, and the other end of the liquid cooling plate is connected to the second liquid cooling part. The first liquid cooling part, the plurality of liquid cooling plates and the second liquid cooling part are internally connected and form an I-shaped structure. At the same time, the side liquid cooling part and the liquid cooling plate are integrated. The first liquid cooling part and the second liquid cooling part are in close contact with the sides of the battery cells, so as to be able to dissipate heat from a larger area of the battery cells, effectively dissipate heat from the middle and upper regions of the battery cells, and can greatly improve the cooling efficiency of the liquid cooling system. The design that the first liquid cooling part, the plurality of liquid cooling plates and the second liquid cooling part are internally connected and form an I-shaped structure can increase the structural stiffness of the energy storage battery pack box body, thereby improving its seismic reliability. In addition, the liquid cooling plate has the function of a stiffening rib and can effectively improve the structural stiffness of the battery pack box body structure.

[0005] As an alternative embodiment, in the side liquid-cooled energy storage battery pack structure provided by the present utility model, a liquid injection hole is provided on the first liquid-cooled part. The liquid-cooled plate is hermetically connected to the first liquid-cooled part. A plurality of first grooves matching the liquid-cooled plate are provided on the first liquid-cooled part. The liquid-cooled plate is hermetically clamped in the first grooves. A coolant outlet is provided in the first grooves. The coolant outlet in the first grooves is communicated with the coolant inlet of the liquid-cooled plate. By providing the first grooves, it is convenient to install the liquid-cooled plate, which plays a fixing role and realizes positioning at the same time. The liquid-cooled plate is hermetically connected to the first liquid-cooled part to ensure the sealing effect.

[0006] As an alternative embodiment, in the side liquid-cooled energy storage battery pack structure provided by the present utility model, a liquid outlet hole is provided on the second liquid-cooled part. The liquid-cooled plate is hermetically connected to the second liquid-cooled part. A plurality of second grooves matching the liquid-cooled plate are provided on the second liquid-cooled part. The liquid-cooled plate is hermetically clamped in the second grooves. A coolant inlet is provided in the second grooves. The coolant inlet in the second grooves is communicated with the coolant outlet of the liquid-cooled plate. By providing the second grooves, it is convenient to install the liquid-cooled plate, which plays a fixing role and realizes positioning at the same time. The liquid-cooled plate is hermetically connected to the second liquid-cooled part to ensure the sealing effect. By providing a liquid injection hole on the first liquid-cooled part and a liquid outlet hole on the second liquid-cooled part, it is convenient for the coolant to flow successively in the first liquid-cooled part, the liquid-cooled plate and the second liquid-cooled part, which can greatly improve the cooling efficiency of the liquid-cooled system;

[0007] As an alternative embodiment, in the side liquid-cooled energy storage battery pack structure provided by the present utility model, the side liquid-cooled energy storage battery pack structure further includes a fence. The fence is respectively connected to the first liquid-cooled part and the second liquid-cooled part. The fence, the first liquid-cooled part and the second liquid-cooled part are connected to form a receiving cavity, and the liquid-cooled plate is provided in the receiving cavity. By providing the fence, the side liquid-cooled energy storage battery pack structure is a square structure, which is convenient for installation.

[0008] As an alternative embodiment, in the side liquid-cooled energy storage battery pack structure provided by the present utility model, the liquid-cooled plate is respectively welded to the first liquid-cooled part and the second liquid-cooled part to form an integral structure, and the liquid-cooled plate, the first liquid-cooled part and the second liquid-cooled part are internally communicated. The liquid-cooled plate is respectively welded to the first liquid-cooled part and the second liquid-cooled part and is internally communicated to form an integral structure to ensure the sealing of the connection and have a better use effect.

[0009] As an alternative embodiment, in the side liquid-cooled energy storage battery pack structure provided by the present utility model, a thermal conductive adhesive is coated on the area where the liquid-cooled plate contacts the battery cell to reduce the contact thermal resistance, thereby increasing the thermal conductivity efficiency and further improving the heat dissipation efficiency.

[0010] Compared with the prior art, the beneficial effects of the technical solution of the present utility model are as follows: The side liquid-cooled energy storage battery pack structure provided by the present utility model, by setting a first liquid-cooling part, a second liquid-cooling part and a plurality of liquid-cooling plates, the first liquid-cooling part, the second liquid-cooling part and the liquid-cooling plates are all of hollow structures, the plurality of liquid-cooling plates are arranged side by side at intervals, the adjacent liquid-cooling plates are used to arrange battery cells, one end of the liquid-cooling plate is connected to the first liquid-cooling part, the other end of the liquid-cooling plate is connected to the second liquid-cooling part, the first liquid-cooling part, the plurality of liquid-cooling plates and the second liquid-cooling part are internally connected and form an I-shaped structure; at the same time, the side liquid-cooling part and the liquid-cooling plates are integrated, the first liquid-cooling part and the second liquid-cooling part are in close contact with the sides of the battery cells, so that the battery cells can be cooled in a larger area, effectively cooling the upper and middle regions of the battery cells, and the cooling efficiency of the liquid-cooling system can be greatly improved. The design that the first liquid-cooling part, the plurality of liquid-cooling plates and the second liquid-cooling part are internally connected and form an I-shaped structure can increase the structural stiffness of the energy storage battery pack box body, thereby improving its seismic reliability. In addition, the liquid-cooling plates have the function of strengthening ribs and can effectively improve the structural stiffness of the battery pack box body structure. Brief Description of the Drawings

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the structures shown in these drawings.

[0012] Figure 1 It is a structural schematic diagram of the side liquid-cooled energy storage battery pack structure provided by the present utility model;

[0013] Figure 2 It is a structural schematic diagram of the first liquid-cooling part provided by the present utility model;

[0014] Figure 3 It is a structural schematic diagram of the liquid-cooling plate provided by the present utility model.

[0015]

Description of the Reference Numerals

[0016] 1. First liquid-cooling part; 11. Liquid injection hole; 12. First groove; 2. Second liquid-cooling part; 21. Liquid outlet hole; 3. Liquid-cooling plate; 4. Battery cell; 5. Enclosure. Detailed Embodiment

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0018] It should be noted that all directional indications in the embodiments of the present invention, such as first, second, up, down, left, right, front, back... are only used to explain the relative positional relationship and movement conditions between components in a specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indications will also change accordingly.

[0019] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions conflicts with each other or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0020] The present invention provides a side liquid-cooled energy storage battery pack structure, as Figures 1 - 3 shown, which includes a first liquid-cooling part 1, a second liquid-cooling part 2, and a plurality of liquid-cooling plates 3. The first liquid-cooling part 1, the second liquid-cooling part 2, and the liquid-cooling plates 3 are all hollow structures. The plurality of liquid-cooling plates 3 are arranged side by side at intervals. The adjacent liquid-cooling plates 3 are used to arrange battery cells 4. One end of the liquid-cooling plate 3 is connected to the first liquid-cooling part 1, and the other end of the liquid-cooling plate 3 is connected to the second liquid-cooling part 2. The first liquid-cooling part 1, the plurality of liquid-cooling plates 3, and the second liquid-cooling part 2 are internally connected and form an I-shaped structure. At the same time, the side liquid-cooling part is integrated with the liquid-cooling plate 3. The first liquid-cooling part 1 and the second liquid-cooling part 2 are in close contact with the sides of the battery cells 4, so as to be able to dissipate heat from the battery cells 4 in a larger area, effectively dissipate heat from the upper and middle regions of the battery cells 4, and can greatly improve the cooling efficiency of the liquid-cooling system. The design that the first liquid-cooling part 1, the plurality of liquid-cooling plates 3, and the second liquid-cooling part 2 are internally connected and form an I-shaped structure can increase the structural stiffness of the energy storage battery pack box body, thereby improving its seismic reliability. In addition, the liquid-cooling plate 3 has the function of a reinforcing rib and can effectively improve the structural stiffness of the battery pack box body structure.

[0021] As Figure 2As shown, in the side liquid-cooled energy storage battery pack structure provided by the present utility model, a liquid injection hole 11 is provided on the first liquid-cooled part 1. The liquid-cooled plate 3 is hermetically connected to the first liquid-cooled part 1. A plurality of first grooves 12 matching the liquid-cooled plate 3 are provided on the first liquid-cooled part 1. The liquid-cooled plate 3 is hermetically clamped in the first grooves 12. A coolant outlet is provided in the first grooves 12. The coolant outlet in the first grooves 12 is communicated with the coolant inlet of the liquid-cooled plate 3. By providing the first grooves 12, it is convenient to install the liquid-cooled plate 3, which plays a fixing role and realizes positioning at the same time. The liquid-cooled plate 3 is hermetically connected to the first liquid-cooled part 1 to ensure the sealing effect.

[0022] As Figure 1 shown, in the side liquid-cooled energy storage battery pack structure provided by the present utility model, a liquid outlet hole 21 is provided on the second liquid-cooled part 2. The liquid-cooled plate 3 is hermetically connected to the second liquid-cooled part 2. A plurality of second grooves matching the liquid-cooled plate 3 are provided on the second liquid-cooled part 2. The liquid-cooled plate 3 is hermetically clamped in the second grooves. A coolant inlet is provided in the second grooves. The coolant inlet in the second grooves is communicated with the coolant outlet of the liquid-cooled plate 3. By providing the second grooves, it is convenient to install the liquid-cooled plate 3, which plays a fixing role and realizes positioning at the same time. The liquid-cooled plate 3 is hermetically connected to the second liquid-cooled part 2 to ensure the sealing effect. By providing the liquid injection hole 11 on the first liquid-cooled part 1 and the liquid outlet hole 21 on the second liquid-cooled part 2, it is convenient for the coolant to flow through the first liquid-cooled part 1, the liquid-cooled plate 3 and the second liquid-cooled part 2 in sequence, which can greatly improve the cooling efficiency of the liquid-cooled system. The structures of the first liquid-cooled part 1 and the second liquid-cooled part 2 are the same.

[0023] Further, in the side liquid-cooled energy storage battery pack structure provided by the present utility model, the side liquid-cooled energy storage battery pack structure further includes a fence 5. The fence 5 is respectively connected to the first liquid-cooled part 1 and the second liquid-cooled part 2. The fence 5, the first liquid-cooled part 1 and the second liquid-cooled part 2 are connected to form a receiving cavity, and the liquid-cooled plate 3 is provided in the receiving cavity. By providing the fence 5, the side liquid-cooled energy storage battery pack structure is a square structure, which is convenient for installation.

[0024] In addition, in the side liquid-cooled energy storage battery pack structure provided by the present utility model, the liquid-cooled plate 3 is respectively welded to the first liquid-cooled part 1 and the second liquid-cooled part 2 to form an integral structure. The liquid-cooled plate 3, the first liquid-cooled part 1 and the second liquid-cooled part 2 are internally communicated. The liquid-cooled plate 3 is respectively welded to the first liquid-cooled part 1 and the second liquid-cooled part 2 and is internally communicated to form an integral structure to ensure the sealing of the connection and has a better use effect.

[0025] Furthermore, in the side liquid-cooled energy storage battery pack structure provided by the present utility model, a heat-conducting adhesive is coated on the area where the liquid-cooled plate 3 contacts the battery cell 4 to reduce the contact thermal resistance, thereby increasing the heat conduction efficiency and further improving the heat dissipation efficiency.

[0026] It should be understood that the above description of the specific embodiments of the present utility model is only for explaining the technical route and features of the present utility model, and its purpose is to enable those skilled in the art to understand the content of the present utility model and implement it accordingly. However, the present utility model is not limited to the above specific embodiments. Any changes or modifications made within the scope of the claims of the present utility model should be covered by the protection scope of the present utility model.

Claims

1. A side liquid-cooled energy storage battery pack structure, characterized in that, It includes a first liquid cooling part (1), a second liquid cooling part (2) and a plurality of liquid cooling plates (3). The first liquid cooling part (1), the second liquid cooling part (2) and the liquid cooling plates (3) are all of hollow structures. The plurality of liquid cooling plates (3) are arranged in parallel at intervals. Between adjacent liquid cooling plates (3) are used to arrange battery cells (4). One end of the liquid cooling plate (3) is connected to the first liquid cooling part (1), and the other end of the liquid cooling plate (3) is connected to the second liquid cooling part (2). The inside of the first liquid cooling part (1), the plurality of liquid cooling plates (3) and the second liquid cooling part (2) is communicated and forms an I-shaped structure.

2. The side liquid-cooled energy storage battery pack structure according to claim 1, wherein A liquid injection hole (11) is provided on the first liquid cooling part (1). The liquid cooling plate (3) is hermetically connected to the first liquid cooling part (1). A plurality of first grooves (12) matching the liquid cooling plate (3) are provided on the first liquid cooling part (1). The liquid cooling plate (3) is hermetically clamped in the first grooves (12). A coolant outlet is provided in the first grooves (12). The coolant outlet in the first grooves (12) is communicated with the coolant inlet of the liquid cooling plate (3).

3. The side liquid-cooled energy storage battery pack structure according to claim 1, characterized in that, A liquid outlet hole (21) is provided on the second liquid cooling part (2). The liquid cooling plate (3) is hermetically connected to the second liquid cooling part (2). A plurality of second grooves matching the liquid cooling plate (3) are provided on the second liquid cooling part (2). The liquid cooling plate (3) is hermetically clamped in the second grooves. A coolant inlet is provided in the second grooves. The coolant inlet in the second grooves is communicated with the coolant outlet of the liquid cooling plate (3).

4. The side liquid-cooled energy storage battery pack structure according to claim 1, characterized in that, The side liquid-cooled energy storage battery pack structure further includes a fence (5). The fence (5) is respectively connected to the first liquid cooling part (1) and the second liquid cooling part (2). The fence (5), the first liquid cooling part (1) and the second liquid cooling part (2) are connected to form a containing cavity, and the liquid cooling plate (3) is provided in the containing cavity.

5. The side liquid-cooled energy storage battery pack structure according to claim 1, wherein The liquid cooling plate (3) is respectively welded to the first liquid cooling part (1) and the second liquid cooling part (2) to form an integral structure. The inside of the liquid cooling plate (3), the first liquid cooling part (1) and the second liquid cooling part (2) is communicated.

6. The side liquid-cooled energy storage battery pack structure according to claim 1, wherein, A heat-conducting adhesive is coated on the area where the liquid cooling plate (3) contacts the battery cell (4).

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