CN218975575U - Heat exchange structure and battery pack - Google Patents

Abstract

The embodiment of the application provides a heat exchange structure and a battery pack, wherein the heat exchange structure comprises a frame and a partition board, and an inlet runner and an outlet runner communicated with the inlet runner are arranged in the frame; at least one end of the partition plate is communicated with the corresponding frame of the inlet flow channel, the partition plate divides the accommodating cavity enclosed by the frame into a plurality of cavities, and the cavities are used for accommodating the electric cores of the batteries; the partition plate is internally provided with a partition plate flow passage communicated with the inlet flow passage, and the heat exchange working medium flows into the partition plate flow passage from the inlet flow passage and flows out from the outlet flow passage from the inlet flow passage. The embodiment of the application provides a heat exchange structure carries out heat transfer to the electric core of baffle both sides through setting up the baffle runner in the baffle, has improved heat exchange structure's heat exchange efficiency.

Description

Heat exchange structure and battery pack

technical field

The utility model belongs to the technical field of heat exchange, in particular, the utility model relates to a heat exchange structure and a battery pack.

Background technique

The battery cells in the battery pack will generate a lot of heat during charging and discharging, which will cause the temperature of the battery cells to rise, and the high temperature will cause internal damage to the battery cells. Therefore, it is necessary to cool the cells to achieve stable work. state.

In the prior art, a liquid cooling plate is usually used to cool down and dissipate heat from the battery cells of the battery pack, but the current liquid cooling plate has a limited contact area with the battery cells, resulting in a decrease in the cooling efficiency of the liquid cooling plate and affecting the performance of the battery pack. Safe to use.

Utility model content

One purpose of the utility model is to provide a new technical solution for a heat exchange structure and a battery pack, which can solve the problem of low heat exchange efficiency of the existing heat exchange structure.

According to the first aspect of the present utility model, a heat exchange structure is provided, comprising:

A frame, the frame is provided with an inlet flow channel and an outlet flow channel communicating with the inlet flow channel;

A partition, at least one end of the partition communicates with the frame corresponding to the inlet channel, and the partition divides the accommodating chamber surrounded by the frame into a plurality of cavities, and the cavities are used to accommodate The cell of the battery; the separator has a separator flow channel in communication with the inlet flow channel. After the heat exchange working medium flows into the separator flow channel from the inlet flow channel, it passes through the inlet flow channel After the passage, it flows out from the outlet channel.

Optionally, a baffle is provided in the partition flow channel, and one end of the baffle is connected to the inlet flow channel, when the heat exchange working medium flows into the heat exchange structure, the baffle The flow direction of the heat exchange working medium on both sides of the flow plate is opposite.

Optionally, the baffle is a U-shaped baffle, and both ends of the U-shaped baffle communicate with the frame corresponding to the inlet flow channel, so that both the inlet end and the outlet end of the baffle flow channel are connected to the The inlet channel is connected;

After the heat exchange working medium flows into the partition flow channel through the inlet end of the partition flow channel from the inlet flow channel, flows into the inlet flow channel through the outlet end of the partition plate flow channel, and then flows from The outlet channel flows out.

Optionally, the frame includes a first side panel and a second side panel oppositely arranged;

The first side plate is provided with an inlet flow channel communicating with the partition flow channel, the second side plate is provided with the outlet flow channel, and one end of the partition plate is connected to the first side plate The other end of the baffle is connected to the second side plate; a baffle gap is formed between the end of the baffle far away from the inlet channel and the second side plate.

Optionally, the frame includes a first end plate and a second end plate oppositely disposed, the first end plate is provided with the inlet channel, and the second end plate is provided with the outlet channel ;

The first end plate, the first side plate, the second end plate and the second side plate are sequentially connected, so that the inlet flow channel, the partition flow channel and the outlet flow channel Form a circulation flow channel.

Optionally, a first interface and a second interface are also included, and the first interface and the second interface are both arranged on the first end plate;

The heat exchange working medium flows into the inlet channel in the first end plate from the first port, and flows out from the second port through the outlet channel in the second side plate.

Optionally, a first buffer cavity is formed on a side of the first end plate close to the first interface, and the first buffer cavity communicates with the first interface and the inlet channel in the first end plate ;

A second buffer cavity is formed on a side of the second side plate close to the second interface, and the second buffer cavity communicates with the outlet channel in the second side plate and the second interface.

Optionally, a plurality of baffles are included, and a plurality of baffles are arranged at intervals in the accommodating cavity, and the flow channels of the baffles in the plurality of baffles are connected to the inlet flow channels in the first side plate. Road connected;

During the process of the heat exchange working medium flowing from the first interface to the second interface, the heat exchange working medium flows between the inlet flow channel in the first side plate and the separator flow channel .

Optionally, one end of the baffle plate close to the baffle gap is provided with an edge portion, and the edge portion is bent toward the flow channel on one side of the baffle plate.

According to the second aspect of the present invention, there is provided a battery pack, including the battery cell and the heat exchange structure described in the first aspect;

The electric core is assembled in the cavity.

A technical effect of the present utility model is:

An embodiment of the present application provides a heat exchange structure, the heat exchange structure includes a frame and a partition, the frame is provided with an inlet flow channel and an outlet flow channel communicating with the inlet flow channel; the partition plate At least one end communicates with the frame corresponding to the inlet flow channel, and the partition plate divides the accommodating cavity surrounded by the frame into a plurality of cavities, and the cavities are used to accommodate the cells of the battery; There is a baffle flow channel in the plate that communicates with the inlet flow channel. After the heat exchange working medium flows into the baffle flow channel from the inlet flow channel, it flows from the outlet flow channel after passing through the inlet flow channel. flow out. In the heat exchange structure provided in the embodiments of the present application, the separator flow channels are provided in the separator to exchange heat for the cells on both sides of the separator, thereby improving the heat exchange efficiency of the heat exchange structure.

Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principle of the invention.

Fig. 1 is a perspective view of a heat exchange structure provided by an embodiment of the present invention;

Fig. 2 is a cross-sectional view of a heat exchange structure provided by an embodiment of the present invention along the direction of the partition;

Fig. 3 is a cross-sectional view of a heat exchange structure provided by an embodiment of the present invention along the direction of the first end plate;

Fig. 4 is a cross-sectional view of a heat exchange structure provided by an embodiment of the present invention along a direction perpendicular to the partition;

Figure 5 is a partially enlarged view of Figure 4;

Fig. 6 is a cross-sectional view of a heat exchange structure provided by an embodiment of the present invention along the direction of the second side plate;

Fig. 7 is a schematic diagram of the first flow channel and the separator flow channel in a heat exchange structure provided by an embodiment of the present invention;

Fig. 8 is a schematic diagram of the flow direction of the heat exchange working medium in the first flow channel and the separator flow channel in a heat exchange structure provided by an embodiment of the present invention;

FIG. 9 is a partially enlarged view of FIG. 8 .

Among them: 1. frame; 11. inlet flow channel; 12. cavity; 13. first side plate; 14. second side plate; 141. second buffer cavity; 15. first end plate; 151. first buffer Cavity; 16, second end plate; 17, outlet channel; 2, partition; 21, partition channel; 3, baffle; 31, edge; 32, baffle gap; 4, first interface; 5. The second interface.

Detailed ways

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangements of components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

The following description of at least one exemplary embodiment is merely illustrative in nature, and in no way serves as any limitation of the invention and its application or use.

Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods and devices should be considered part of the description.

In all examples shown and discussed herein, any specific values should be construed as exemplary only, and not as limitations. Therefore, other instances of the exemplary embodiment may have different values.

It should be noted that like numerals and letters denote like items in the following figures, therefore, once an item is defined in one figure, it does not require further discussion in subsequent figures.

Referring to Figures 1 to 5, the embodiment of the present application provides a heat exchange structure, the heat exchange structure includes:

A frame 1 and a partition 2, the frame 1 is provided with an inlet channel 11 and an outlet channel 17 communicating with the inlet channel.

Referring to Fig. 4 and Fig. 5, at least one end of the partition communicates with the frame corresponding to the inlet channel, and the partition divides the accommodating cavity surrounded by the frame 1 into a plurality of cavities 12, so that The cavity 12 is used to accommodate the cells of the battery; so that when the cells are arranged in the cavity 12, the frame 1 and the separator 2 can jointly exchange heat with the cells.

The separator 2 has a separator flow channel 21 in communication with the inlet flow channel 11. After the heat exchange working medium flows into the separator flow channel from the inlet channel, it passes through the inlet channel out of the outlet channel.

Specifically, when the temperature of the battery core in the cavity 12 is high, the inlet flow channel 11 and the separator flow channel 21 can pass through the heat exchange working medium with a relatively low temperature, so that the heat exchange working medium can pass through the heat exchange working medium. The battery core is cooled; and when the temperature of the battery core in the cavity 12 is low, a heat exchange working medium with a higher temperature can be introduced into the inlet flow channel 11 and the separator flow channel 21 to pass through the heat exchange process. The working fluid heats the battery core to ensure that the temperature of the battery core is at an appropriate operating temperature.

After the heat exchange working medium flows into the partition flow channel from the inlet flow channel, and flows out from the outlet flow channel after passing through the inlet flow channel, the partition plate 2 can pass through the partition plate The heat exchange working medium flowing in the flow channel exchanges heat with the cells on both sides of the separator 2, and the inlet flow channel 11 and the outlet flow channel 17 in the frame 1 communicate with the separator in the separator 2 The channel 21 cooperates to improve the heat exchange efficiency of the heat exchange structure.

In addition, the heat exchange working medium in the inlet flow channel 11 and the separator flow channel 21 may be a liquid-phase cooling medium such as water or ethylene glycol, or a gas-phase refrigerant such as CO ₂ or ammonia.

Optionally, a baffle 3 is provided in the partition channel 21, and one end of the baffle 3 is connected to the inlet channel 11, when the heat exchange working fluid flows into the heat exchange structure , the flow direction of the heat exchange working medium on both sides of the baffle plate 3 is opposite.

Referring to Fig. 8 and Fig. 9, the baffle 3 extends from the inlet channel 11 of the frame 1 to the partition channel 21 in the partition 2, so that the heat exchange in the inlet channel 11 When the working fluid flows into the separator flow channel 21 , the flow direction of the heat-exchanging working medium on both sides of the baffle plate 3 is opposite.

Specifically, the heat exchange working medium in the inlet flow channel 11 first flows into the flow channel on one side of the baffle 3, and then the heat exchange working medium is reversed at the end of the baffle 3, so that the heat exchange working medium flows from the deflector to The flow direction is opposite when the flow channel on one side of the flow plate 3 flows into the other side flow channel of the baffle plate 3, so that two parts of the heat exchange working fluid with opposite flow directions can be provided in one partition 2 to pass through the baffle plate 3 The heat-exchanging working medium on both sides performs main heat exchange on the cells on both sides of the separator 2, and with the cooperation of the frame 1 and the separator 2, it can ensure that each The heat exchange surface can perform effective heat exchange, and the heat exchange working medium realizes a closed communication flow around the battery core, which improves the heat exchange efficiency of the heat exchange structure and ensures the stable operation and safe use of the battery core .

Optionally, the baffle 2 is a U-shaped baffle, and both ends of the U-shaped baffle communicate with the frame corresponding to the inlet flow channel, so that the inlet end and the outlet end of the baffle flow channel 21 are all in communication with the inlet channel;

After the heat exchange working medium flows into the partition flow channel through the inlet end of the partition flow channel 21 from the inlet flow channel, it flows to the inlet flow channel through the outlet end of the partition flow channel 21 Then flow out from the outlet channel.

Specifically, when the heat exchange working medium flows from the inlet channel through the inlet end of the separator channel 21 into the separator channel, part of the heat exchange working medium in the inlet channel passes through the The inlet end of the baffle flow channel 21 flows into the baffle flow channel, while the rest of the heat exchange working fluid still flows along the inlet flow channel; The inlet end of the partition flow channel 21 flows into the partition flow channel, and then all flows through the outlet end of the partition flow channel 21 to the inlet channel, and finally flows out from the outlet channel.

In the U-shaped baffle, the flow direction of the heat exchange working medium in the first half near the inlet end and the second half near the outlet end are opposite, so that two parts of the heat exchange working medium with opposite flow directions can be provided in one U-shaped baffle, Heat exchange is performed on the cells on both sides of the U-shaped separator with the heat-exchanging working medium passing through the U-shaped separator in opposite directions.

Optionally, referring to FIG. 2 and FIG. 3 , the frame 1 includes a first side plate 13 and a second side plate 14 oppositely arranged;

The first side plate 13 is provided with an inlet flow channel 11 communicating with the partition flow channel 21, the second side plate 14 is provided with the outlet flow channel 17, and one end of the partition plate 2 is connected to the The first side plate 13 communicates, and the other end of the partition plate 2 is connected to the second side plate 14; the end of the baffle plate 3 away from the inlet channel 11 is connected to the second side plate 14 A baffle gap 32 is formed therebetween.

Specifically, the inlet flow channel 11 in the first side plate 13 communicates with the partition flow channel 21, and the outlet flow channel 17 in the second side plate 14 can be separated from the partition flow channel 21. Open, the heat exchange working medium in the first side plate 13 can first flow into the partition flow channel 21 on the side of the baffle plate 3, and then the heat exchange working medium flows in the baffle gap 32 Reverse, so that the heat exchange working medium flows into the partition flow channel 21 on the other side of the baffle plate 3, so that the heat exchange working medium passing through the two sides of the baffle plate 3 respectively The cells on the side perform heat exchange.

In addition, in the case where one partition 2 is provided in the heat exchange structure, a plurality of partition flow channels 21 are provided in one partition 2, and one baffle plate 3 is correspondingly provided in each partition flow channel 21, and the plurality of A plurality of baffles 3 can uniformly extend from the first side plate 13 into the partition 2 to ensure the regularity and consistency of the flow of the heat-exchanging working medium in the plurality of partition channels 21 of the partition 2 .

In the case where a plurality of partitions 2 are set in the heat exchange structure, a plurality of partition flow channels 21 may be provided in each of the plurality of partition plates 2, and a baffle plate is correspondingly arranged in each partition flow channel 21. 3. The plurality of baffles 3 in the plurality of partitions 2 can uniformly extend from the first side plate 13 into the partition 2, so as to ensure that the flow passages 21 of the plurality of partitions 2 are exchanged. Regularity and consistency of thermal fluid flow.

Optionally, referring to FIG. 3 , the frame 1 includes a first end plate 15 and a second end plate 16 oppositely arranged, the inlet flow channel 11 is arranged in the first end plate 15 , and the second end plate 15 The outlet channel 17 is arranged in the plate 16;

The first end plate 15, the first side plate 13, the second end plate 16 and the second side plate 14 are sequentially connected, so that the inlet channel 11, the separator channel 21 A circulation flow path is formed with the outlet flow path 17, which improves the heat exchange efficiency of the heat exchange structure.

Specifically, in one embodiment, the first end plate 15, the first side plate 13, the second end plate 16 and the second side plate 14 may form a square ring structure, and When the flat separator 2 is arranged in the frame 1, a plurality of square cavities 12 can be divided in the frame 1, so as to fix the square cells through the square cavities.

In another embodiment, the first end plate 15, the first side plate 13, the second end plate 16 and the second side plate 14 may form a circular ring structure, and When the arc-shaped separator 2 is arranged in the frame 1, a plurality of circular cavities 12 can be divided in the frame 1, so as to fix the cylindrical cells through the circular cavities.

Optionally, referring to Fig. 1 to Fig. 3, the heat exchange structure further includes a first interface 4 and a second interface 5, both of which are arranged on the first end plate 15 on;

The heat exchange medium flows from the first port 4 into the inlet channel 11 in the first end plate 15 , and flows from the second port 5 through the outlet channel 17 in the second side plate 14 . flow out.

Specifically, since the first end plate 15, the first side plate 13, the second end plate 16, and the second side plate 14 form a ring, when the heat exchange working medium moves from the first A port 4 flows into the

After the inlet channel 11 in the first end plate 15, it can then flow through the inlet channel 11 in the first side plate 13, the outlet channel 17 in the second end plate 16 and the The outlet channels 17 in the two side plates 14 make the heat exchange structure form a closed-loop heat exchange system, improving the heat exchange efficiency and structural integrity of the heat exchange structure.

Optionally, referring to FIG. 3 , a first buffer cavity 151 is formed on a side of the first end plate 15 close to the first interface 4 , and the first buffer cavity 151 communicates with the first interface 4 and the The inlet channel 11 in the first O end plate 15;

Referring to FIG. 6 , a second buffer cavity 141 is formed on the side of the second side plate 14 close to the second interface 5 , and the second buffer cavity 141 communicates with the outlet channel 17 in the second side plate 14 and the second interface 5 .

Specifically, during the process of the heat exchange working medium flowing from the first interface 4 into the inlet channel 11 of the middle 5 of the first end plate 15, since the first end plate 15 is arranged side by side with multiple Inlet channel 11, in order to avoid vortex when the heat exchange working medium flows into multiple inlet channels 11 from one first interface 4, the inlet flow in the first interface 4 and the first end plate 15 can be A first buffer chamber 151 is formed between the channels 11, and the flow area of the first buffer chamber 151 is larger than that of a single inlet.

The flow area of the mouth flow channel 11 is such that the heat exchange working medium flows into the first buffer chamber 151 after flowing in from the first interface 4, and then flows into the first buffer chamber 151 from the first buffer chamber 151. In the inlet channel 11 in the first end plate 15, the eddy loss of the heat exchange working medium in the inlet channel 11 can be significantly reduced.

Specifically, during the process of the heat exchange working medium flowing out from the second interface 5 through the outlet channel 17 in the second side plate 14, since the second side plate 14 is arranged side by side with multiple Outlet 5 flow passage 17, in order to prevent the heat exchange working medium from flowing from multiple outlet flow passages 17 to a second interface 5

When a vortex occurs, a second buffer cavity 141 can be formed between the second interface 5 and the outlet channel 17 in the second side plate 14, and the flow area of the second buffer cavity 141 is larger than that of a single outlet. The flow area of the flow channel 17 is such that the heat exchange working medium flows into the second buffer cavity 141 after flowing out of the outlet flow channel 17 in the second side plate 14, and then flows from the second buffer cavity The cavity 141 flows into the second interface 5 , which can significantly reduce the eddy current loss of the heat exchange working medium at the second interface 5 .

Optionally, the heat exchange structure includes a plurality of baffles 2, and a plurality of baffles 2 are arranged at intervals in the accommodating cavity, and the baffle flow channels 21 in the plurality of baffles 2 are all connected to the The inlet channel 11 in the first side plate 13 is communicated;

During the process of the heat exchange working medium flowing from the first port 4 to the second port 5, the inlet channel 11 of the heat exchange working medium in the first side plate 13 and the partition plate Flow channel 21 flows at intervals.

Specifically, during the process of the heat exchange working medium flowing from the first interface 4 to the second interface 5, the heat exchange working medium flows through the first end plate 15 sequentially in the frame 1 , the first side plate 13, the second end plate 16 and the second side plate 14; When the baffle plate 3 extends from the first side plate 13 to the partition plate 2, the heat exchange working medium will flow into the first side plate 13 at intervals. The separator flow channel 21 in the separator 2, that is, the heat exchange working medium can flow at intervals between the inlet flow channel 11 and the separator flow channel 21, so as to reach the surrounding surface of the battery core. for efficient heat transfer.

Optionally, referring to FIG. 8 and FIG. 9 , the end of the baffle 3 close to the baffle gap 32 is provided with an edge portion 31 , and the edge portion 31 bends toward the flow channel on the side of the baffle 3 . The edge portion 31 is configured to buffer the reversing of the heat exchange working medium in the partition flow channel 21 .

Specifically, the edge portion 31 can be bent toward the side of the partition plate 2 where the heat exchange working medium flows in, that is, the side of the partition plate 2 where the heat exchange working medium flows in can be restricted by the edge portion 31 The flow rate of the heat exchange working medium is avoided, and the flow direction disorder caused by the decrease of the flow velocity is avoided when the heat exchange working medium is reversed at the end of the baffle plate 3, so as to ensure the stability of the flow of the heat exchange working medium in the partition plate 2.

Optionally, referring to FIG. 8 , the heat exchange working medium on both sides of the baffle 3 is respectively close to the two adjacent cavities 12 .

Specifically, the flow direction of the heat exchange working medium is opposite when it flows into the other side flow channel of the baffle plate 3 from one side flow channel of the baffle plate 3, so that two parts of the flow direction of the opposite exchange can be provided in one separator 2. When the heat exchange working medium on both sides of the baffle plate 3 is close to the two adjacent cavities 12, the heat exchange working medium on both sides of the baffle plate 3 can respectively The battery cells on both sides of the separator 2 perform heat exchange to ensure the heat exchange uniformity of the heat exchange structure for multiple battery cells.

Optionally, referring to FIG. 2 and FIG. 5 , in the height direction of the heat exchange structure, a plurality of inlet flow channels 11 are arranged side by side in the frame 1 , and a plurality of the separator flow channels 21 are arranged The partitions 2 are arranged side by side.

Specifically, the height direction of the heat exchange structure may be the height direction marked in FIG. All extend along the horizontal direction in the frame 1, so as to reduce the influence of the weight of the heat-exchanging working medium itself in the inlet flow channel 11 on the flow rate of the heat-exchanging working medium, and ensure the heat exchange in a plurality of the inlet flow channels 11. The stability of working fluid flow.

Referring to Fig. 5, a plurality of the partition flow channels 21 are arranged side by side in the partition 2, that is, a plurality of the partition flow channels 21 extend horizontally in the partition 2, so as to reduce the The influence of the weight of the heat-exchanging working medium in the separator flow channels 21 on the flow rate of the heat-exchanging working medium ensures the stability of the flow of the heat-exchanging working medium in the multiple separator flow channels 21 .

In addition, the heat exchange structure includes a bottom plate, the bottom plate closes the bottom of each cavity 12, and a flow channel is arranged in the bottom plate to pass the heat exchange working medium in the bottom plate to the bottom surface of the electric core. Perform heat exchange.

In another embodiment, the inner wall of the inlet flow channel 11 may be provided with protruding parts such as deflectors, baffles or protrusions to increase the mixing effect of the heat exchange working medium in the inlet flow channel 11, Improve the heat exchange efficiency of the heat exchange working medium and the battery in the inlet flow channel 11; similarly, protruding parts such as deflectors, separators or protrusions can also be provided on the inner wall of the separator flow channel 21, In order to increase the mixing effect of the heat-exchanging working medium in the partition flow channel 21, the heat exchange efficiency between the heat-exchanging working medium and the battery core in the partition plate flow channel 21 is improved.

The embodiment of the present application also provides a battery pack, the battery pack includes battery cells and the heat exchange structure;

The cells are assembled in the cavity 12 .

Although some specific embodiments of the present invention have been described in detail through examples, those skilled in the art should understand that the above examples are only for illustration, rather than limiting the scope of the present invention. It should be understood by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the invention is defined by the appended claims.

Claims (10)

1. A heat exchange structure, characterized in that, comprising: A frame (1), the frame (1) is provided with an inlet flow channel (11) and an outlet flow channel (17) communicating with the inlet flow channel; A partition (2), at least one end of the partition communicates with the frame corresponding to the inlet channel, and the partition divides the accommodating chamber surrounded by the frame (1) into a plurality of cavities (12 ), the cavity (12) is used to accommodate the electric core of the battery; the separator flow channel (21) communicated with the inlet flow channel (11) is arranged in the separator plate (2), and the heat exchange working medium is from After the inlet channel flows into the separator channel, it passes through the inlet channel and then flows out from the outlet channel. 2. The heat exchange structure according to claim 1, characterized in that, a baffle (3) is provided in the partition channel (21), and one end of the baffle (3) is connected to the The inlet channel (11), when the heat exchange working medium flows into the heat exchange structure, the flow direction of the heat exchange working medium on both sides of the baffle plate (3) is opposite. 3. The heat exchange structure according to claim 1, characterized in that the partition (2) is a U-shaped partition, and both ends of the U-shaped partition communicate with the frame corresponding to the inlet channel , so that both the inlet end and the outlet end of the partition flow channel (21) communicate with the inlet flow channel; After the heat exchange working medium flows into the partition flow channel through the inlet end of the partition flow channel (21) from the inlet flow channel, it flows to the partition flow channel (21) through the outlet end of the The inlet channel flows out from the outlet channel. 4. The heat exchange structure according to claim 2, characterized in that, the frame (1) comprises a first side plate (13) and a second side plate (14) oppositely arranged; The first side plate (13) is provided with an inlet channel (11) communicating with the partition channel (21), and the second side plate (14) is provided with the outlet channel (17 ), one end of the partition (2) communicates with the first side plate (13), and the other end of the partition (2) is connected with the second side plate (14); the baffle (3) A baffle gap (32) is formed between an end away from the inlet channel (11) and the second side plate (14). 5. The heat exchange structure according to claim 4, characterized in that, the frame (1) comprises a first end plate (15) and a second end plate (16) oppositely arranged, and the first end plate ( 15) is provided with the inlet channel (11), and the second end plate (16) is provided with the outlet channel (17); The first end plate (15), the first side plate (13), the second end plate (16) and the second side plate (14) are sequentially connected so that the inlet channel ( 11), the separator flow channel (21) and the outlet flow channel (17) form a circulation flow channel. 6. The heat exchange structure according to claim 5, further comprising a first interface (4) and a second interface (5), the first interface (4) and the second interface (5) are all arranged on the first end plate (15); The heat exchange working medium flows into the inlet channel (11) in the first end plate (15) from the first interface (4), and passes through the outlet channel in the second side plate (14) (17) flows out from the second interface (5). 7. The heat exchange structure according to claim 6, characterized in that, a first buffer cavity (151) is formed on the side of the first end plate (15) close to the first interface (4), and the The first buffer chamber (151) communicates with the first interface (4) and the inlet channel (11) in the first end plate (15); A second buffer cavity (141) is formed on the side of the second side plate (14) close to the second interface (5), and the second buffer cavity (141) communicates with the second side plate (14) The outlet channel (17) in and the second interface (5). 8. The heat exchange structure according to claim 6, characterized in that it comprises a plurality of baffles (2), the plurality of baffles (2) are arranged at intervals in the accommodating cavity, and the plurality of baffles The partition flow channels (21) in the plate (2) are all communicated with the inlet flow channels (11) in the first side plate (13); During the process of the heat exchange working medium flowing from the first interface (4) to the second interface (5), the inlet channel of the heat exchange working medium in the first side plate (13) (11) and the partition flow channel (21) are spaced to flow. 9. The heat exchange structure according to claim 4, characterized in that, one end of the baffle plate (3) close to the baffle gap (32) is provided with an edge portion (31), and the edge portion (31 ) is bent toward the flow channel on one side of the baffle plate (3). 10. A battery pack, characterized in that it comprises a battery cell and the heat exchange structure according to any one of claims 1-9; The electric core is assembled in the cavity (12).

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