CN217426879U - Battery package water-cooling structure and battery package - Google Patents

Abstract

The present application relates to the technical field of battery packs, and in particular, to a battery pack water cooling structure and a battery pack. The water-cooling structure of the battery pack includes a cell module and a first cold plate. The top of the cell module in the first direction is arranged with a connection row. The temperature of the first cold plate is controlled at the opposite position of the connection row, so that the first cold plate avoids the connection row through the avoidance part, and the first cold plate does not interfere with the connection row. Therefore, by arranging the avoidance part on the first cold plate to avoid interference with the connection row at the top of the cell module, the first cold plate can be installed on the top of the cell module, so that the first cold plate can be installed on the top of the cell module. The top of the module controls the temperature of the cell module, thereby improving the temperature control effect to a certain extent, and can quickly and stably adjust the cell temperature to a suitable operating temperature.

Description

Battery pack water cooling structure and battery pack

technical field

The present application relates to the technical field of battery packs, and in particular, to a battery pack water cooling structure and a battery pack.

Background technique

The battery pack is usually provided with a cold plate to ensure that the battery pack can work in a suitable temperature range, and can dissipate heat and cool the cells in the cell module at high temperatures, and can cool the cells in the cell module at low temperatures. Keep warm. Since the top of the cell module is usually provided with components such as connection rows, the cold plate is generally arranged at the bottom of the cell module to avoid interference with the connection row; however, in electric equipment such as electric vehicles, the bottom of the cell module is usually unable to Do sufficient heat preservation, so that when the temperature is low, especially in winter, the cold plate cannot quickly heat up the battery to reach the rechargeable temperature.

Utility model content

The purpose of the present invention is to provide a battery pack water cooling structure and a battery pack, so that the cold plate can be arranged on the top of the battery cell to improve the temperature control effect.

The utility model provides a water cooling structure for a battery pack, comprising a battery core module and a first cold plate;

The first cold plate is installed on one side of the cell module in the first direction, the side of the cell module facing the first cold plate is provided with a connecting row, and the first cold plate is connected to the first cold plate. Avoidance parts are formed at the opposite positions of the connection rows to avoid the connection rows.

Further, the avoidance portion is an avoidance protrusion, and the avoidance protrusion is protruded from the plate surface of the first cold plate toward the side away from the connection row;

The connection row is accommodated in the avoidance protrusion, and there is a predetermined gap between the top wall of the avoidance protrusion and the connection row.

Further, the gap between the top wall of the avoidance protrusion and the connecting row is greater than 1 mm.

Further, the number of the connection rows is multiple, the number of the avoidance parts is also multiple, and the multiple avoidance parts are in one-to-one correspondence with the multiple connection rows.

Further, the battery pack water cooling structure further includes a second cold plate;

The second cold plate and the first cold plate are relatively spaced apart along the first direction, and the cell module is located between the first cold plate and the second cold plate.

Further, a casing is provided around the periphery of the cell module;

The first cold plate and the second cold plate are respectively connected to both ends of the casing in the first direction, so as to close the openings of the casing at both ends in the first direction.

Further, the first cold plate and the second cold plate are respectively connected to the casing by fasteners, and a sealant is provided between the end surfaces of the first cold plate and the casing in contact, and the A sealant is arranged between the second cold plate and the end face of the casing that is intended to be in contact.

Further, an insulating layer is formed on the surfaces of the first cold plate and the second cold plate by spraying.

Further, both the first cold plate and the second cold plate are aluminum profile cold plates.

The utility model also provides a battery pack, which includes the battery pack water cooling structure described in any one of the above.

Compared with the prior art, the beneficial effects of the present utility model are:

The battery pack water-cooling structure provided by the utility model includes a cell module and a first cold plate, the two sides of the cell module in the first direction are the top and bottom ends of the cell module respectively, and the top of the cell module is arranged with a connection row. The first cold plate is installed on the top of the cell module, so as to control the temperature of the cell module through the first cold plate, cool down the cell module when the temperature is high, and heat up the cell module when the temperature is low, so as to power on The core module can be maintained at a suitable operating temperature. The first cold plate is provided with an escape portion. When the first cold plate is installed at a predetermined position on the top of the cell module, the escape portion on the first cold plate is opposite to the connection row at the top of the cell module, so that the first cold plate is opposite to the connection row at the top of the cell module. The cold plate avoids the connection row through the avoidance part, so that the first cold plate does not interfere with the connection row.

Therefore, by setting the avoidance part on the first cold plate to avoid interference with the connection row at the top of the cell module, the first cold plate can be installed on the top of the cell module, so that the first cold plate can be installed on the top of the cell module. The top of the module controls the temperature of the cell module, thereby improving the temperature control effect to a certain extent, and can quickly and stably adjust the cell temperature to a suitable operating temperature.

The utility model also provides a battery pack, including the battery pack water cooling structure, so the battery pack also has the beneficial effect of the battery pack water cooling structure.

Description of drawings

In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the specific embodiments or the prior art. Obviously, the following descriptions The accompanying drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

1 is a schematic structural diagram of a battery pack water cooling structure from a first perspective provided by an embodiment of the present invention;

2 is a schematic structural diagram of a battery pack water-cooling structure from a second perspective provided by an embodiment of the present invention;

3 is a schematic cross-sectional structural diagram of an avoidance protrusion of a water cooling structure for a battery pack provided by an embodiment of the present invention;

FIG. 4 is an enlarged view of part A in FIG. 1 .

Reference number:

1-First cold plate, 11- Avoidance protrusion, 2-Second cold plate, 3-Cell module, 31-Connecting row, 4-Housing, a-First direction.

Detailed ways

The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are a part of the embodiments of the present invention, not all of the embodiments.

The components of the embodiments of the invention generally described and shown in the drawings herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention.

Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner" and "outer" The orientation or positional relationship indicated by etc. is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, with a specific orientation. Therefore, it should not be construed as a limitation on the present invention. Furthermore, the terms "first", "second", and "third" are used for descriptive purposes only and should not be construed to indicate or imply relative importance.

In the description of the present invention, it should be noted that, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection or a connectable connection. Detachable connection, or integral connection; may be mechanical connection or electrical connection; may be direct connection, or indirect connection through an intermediate medium, or internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

The following describes the battery pack water cooling structure and the battery pack according to some embodiments of the present application with reference to FIGS. 1 to 4 .

The present application provides a water-cooling structure for a battery pack. As shown in FIGS. 1 to 4 , the water-cooling structure for a battery pack includes a cell module 3 and a first cold plate 1 . The two sides of the cell module 3 in the first direction a are respectively The top and bottom ends of the cell module 3, in the battery pack, the cell module 3 includes a plurality of cell groups, each cell group includes a plurality of cells arranged side by side, and multiple cells in the same cell group. The individual cells are connected in series through the bus bar, and the adjacent cell groups are connected in series through the connection bar 31 , and the connection bar 31 is arranged at the top of the battery cell module 3 . The first cold plate 1 is installed on the top of the cell module 3, so as to control the temperature of the cell module 3 through the first cold plate 1, cool down the cell module 3 when the temperature is high, and cool the cell module 3 when the temperature is low. The temperature is raised so that the battery cell module 3 can be maintained at a suitable temperature for use. The first cold plate 1 is provided with an escape portion. When the first cold plate 1 is installed at a predetermined position at the top of the cell module 3 , the escape portion on the first cold plate 1 is connected to the connection row 31 at the top of the cell module 3 . On the contrary, the first cold plate 1 avoids the connection row 31 through the escape portion, so that the first cold plate 1 does not interfere with the connection row 31 .

Therefore, by arranging an escape portion on the first cold plate 1 to avoid interference with the connection row 31 at the top of the cell module 3, the first cold plate 1 can be installed on the top of the cell module 3, so that the first cold plate 1 can pass through the first cold plate 1. The cold plate 1 controls the temperature of the cell module 3 at the top of the cell module 3, thereby improving the temperature control effect to a certain extent, and can quickly and stably adjust the cell temperature to a suitable operating temperature.

In an embodiment of the present application, preferably, as shown in FIG. 1 , the top of the cell module 3 is generally provided with a plurality of connection rows 31 ; correspondingly, the first cold plate 1 is provided with a plurality of avoidance part, and the plurality of avoidance parts correspond to the plurality of connection rows 31 one-to-one.

When the first cold plate 1 is installed on the top of the cell module 3 , the plurality of avoidance parts are respectively located above the corresponding connection row 31 to avoid the connection row 31 ; so that the first cold plate 1 can It is installed on the top of the cell module 3 without interfering with the plurality of connection rows 31 on the top of the cell module 3 , so as to better control the temperature of the cell module 3 .

In an embodiment of the present application, preferably, as shown in FIG. 3 , the avoidance portion is the avoidance protrusion 11 formed on the first cold plate 1 . For the first cold plate 1 placed on the top of the cell module 3 , The bulge direction of the avoidance protrusion 11 is that the plate face of the first cold plate 1 protrudes toward the side away from the top end of the cell module 3 , so that the first cold plate 1 forms an avoidance at the position opposite to the connection row 31 . space, the avoidance space is adapted to the connection row 31, so that the connection row 31 can extend into the avoidance space inside the avoidance protrusion 11, and there is a space between the top wall of the avoidance protrusion 11 and the upper surface of the connection row 31. A predetermined gap is formed, so that the first cold plate 1 can avoid the connection row 31 through the avoidance protrusion 11 and be installed on the top end of the cell module 3 .

In an embodiment of the present application, preferably, the gap between the top wall of the avoidance protrusion 11 and the upper surface of the connection row 31 is not less than 1 mm, so that the first cold plate 1 can be connected to the first cold plate 1 through the avoidance protrusion 11 The row 31 is avoided so as not to interfere with the connection row 31 , and at the same time, the temperature control effect of the first cold plate 1 on the cell module 3 can be ensured.

In an embodiment of the present application, preferably, as shown in FIG. 2 , the water cooling structure of the battery pack further includes a second cold plate 2 , and the second cold plate 2 faces the first cold plate 1 along the first direction a The cell modules 3 are arranged at intervals, and the cell modules 3 are installed between the first cold plate 1 and the second cold plate 2, that is, the first cold plate 1 is arranged at the top of the cell module 3 and is connected to the connection row at the top of the cell module 3 through the avoidance part. 31 to avoid, the second cold plate 2 is arranged at the bottom end of the cell module 3, so as to control the temperature of the cell module 3 through the first cold plate 1 and the second cold plate 2 at the same time, so as to improve the power consumption to a certain extent. The temperature control rate of the core module 3 enables the temperature of the battery core module 3 to be rapidly raised or lowered to a suitable temperature for use.

In an embodiment of the present application, preferably, as shown in FIG. 1 , the outer side of the cell module 3 is provided with a housing 4 , the housing 4 is formed with an accommodating space for accommodating the cell module 3 , and the housing 4 Both ends of the first direction a are open, that is, the ends of the casing 4 opposite to the top and bottom ends of the cell module 3 are open. When the first cold plate 1 is installed on the top of the cell module 3 , the upper end face of the casing 4 faces the first cold plate 1 , and the edge of the first cold plate 1 can be placed on the upper end face of the casing 4 . and connected with the shell 4; when the second cold plate 2 is installed on the bottom end of the cell module 3, the lower end face of the shell 4 faces the second cold plate 2, and the edge of the second cold plate 2 can The lower end faces of the bodies 4 abut and connect together. Therefore, an encapsulation shell of the cell module 3 is formed by the shell 4 and the first cold plate 1 and the second cold plate 2 located at both ends of the first direction a of the shell 4, and the shell 4 serves as the circumferential side wall of the encapsulation shell. , the first cold plate 1 is used as the top plate of the encapsulation shell, and the second cold plate 2 is used as the bottom plate of the encapsulation shell to form the package of the cell module 3. At the same time, the first cold plate 1 and the second cold plate as the top plate and the bottom plate The board 2 controls the temperature of the cell module 3, so that the temperature of the cell module 3 can be quickly adjusted to a suitable operating temperature.

In an embodiment of the present application, preferably, the first cold plate 1 and the upper end surface of the casing 4 are connected by fasteners, so that the first cold plate 1 can be stably installed above the casing 4 to use It is used as the top plate of the encapsulation shell of the cell module 3; similarly, the second cold plate 2 is connected with the lower end surface of the casing 4 by fasteners, so that the second cold plate 2 can be stably installed under the casing 4, It can be used as the bottom plate of the packaging shell of the cell module 3 . Therefore, the first cold plate 1 and the second cold plate 2 can not only control the temperature of the cell module 3 , but also protect the cell module 3 .

Preferably, the first cold plate 1 and the second cold plate 2 can be fastened to the end faces of both ends of the casing 4 through FDS riveting process, respectively.

Preferably, a layer of sealant is filled between the first cold plate 1 and the upper end surface of the casing 4, so as to seal the connection between the first cold plate 1 and the casing 4; similarly, the second cold plate 2 and the casing A layer of sealant is also filled between the lower end faces of the body 4 to seal the connection between the second cold plate 2 and the casing 4, so that the first cold plate 1, the second cold plate 2 and the casing 4 are effectively formed. The encapsulation shell for encapsulating the cell module 3 is a sealed shell, so as to effectively protect the cell module 3 located inside.

In an embodiment of the present application, preferably, both the first cold plate 1 and the second cold plate 2 are made of aluminum profiles with greater hardness, so that the first cold plate 1 and the second cold plate 2 have stronger strength, so as to be able to effectively protect the cell module 3.

In an embodiment of the present application, preferably, the surfaces of the first cold plate 1 and the second cold plate 2 are both sprayed with a layer of insulating material, so as to form a layer on the surfaces of the first cold plate 1 and the second cold plate 2 Insulation.

The present application also provides a battery pack, including the battery pack water-cooling structure of any of the above embodiments.

In this embodiment, the battery pack includes a battery pack water-cooling structure, so the battery pack has all the beneficial effects of the battery pack water-cooling structure, which will not be repeated here.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, but not to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that : it can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements to some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the various embodiments of the present utility model Scope of technical solutions.

Claims (10)

1. A water cooling structure for a battery pack, characterized in that it comprises a cell module and a first cold plate; The first cold plate is installed on one side of the cell module in the first direction, the side of the cell module facing the first cold plate is provided with a connecting row, and the first cold plate is connected to the first cold plate. Avoidance parts are formed at the opposite positions of the connection rows to avoid the connection rows. 2 . The battery pack water cooling structure according to claim 1 , wherein the avoidance portion is an avoidance protrusion, and the avoidance protrusion is directed from the plate surface of the first cold plate to a side away from the connection row. 3 . side bulge; The connection row is accommodated in the avoidance protrusion, and there is a predetermined gap between the top wall of the avoidance protrusion and the connection row. 3 . The battery pack water cooling structure according to claim 2 , wherein the gap between the top wall of the avoidance protrusion and the connection row is greater than 1 mm. 4 . 4 . The battery pack water-cooling structure according to claim 1 , wherein the number of the connecting rows is multiple, the number of the escape parts is also multiple, and the multiple escape parts are connected with the multiple places. 5 . The connection rows are in one-to-one correspondence. 5. The battery pack water cooling structure according to claim 1, wherein the battery pack water cooling structure further comprises a second cold plate; The second cold plate and the first cold plate are relatively spaced apart along the first direction, and the cell module is located between the first cold plate and the second cold plate. 6 . The water cooling structure for a battery pack according to claim 5 , wherein a casing is provided around the periphery of the cell module; 7 . The first cold plate and the second cold plate are respectively connected to both ends of the casing in the first direction, so as to close the openings of the casing at both ends in the first direction. 7 . The battery pack water cooling structure according to claim 6 , wherein the first cold plate and the second cold plate are respectively connected to the casing by fasteners, and the first cold plate is connected to the casing. 8 . A sealant is arranged between the end faces of the shells that are in contact with each other, and a sealant is arranged between the second cold plate and the end faces of the shell that are intended to be in contact. 8 . The battery pack water cooling structure according to claim 5 , wherein an insulating layer is formed on the surfaces of the first cold plate and the second cold plate by spraying. 9 . 9 . The battery pack water cooling structure according to claim 5 , wherein the first cold plate and the second cold plate are aluminum profile cold plates. 10 . 10. A battery pack, comprising the battery pack water cooling structure according to any one of claims 1 to 9.

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