Battery thermal management system and battery pack

Abstract

This application provides a battery thermal management system and a battery pack. The battery thermal management system includes a first plate; a second plate, spaced apart from the first plate along a first direction to form an accommodating space for housing a battery cell; the first direction is the thickness direction of the first plate; and a circulation channel disposed at the first and second plates for transporting a heat exchange medium. The first and second plates can simultaneously exchange heat with the battery cell on both sides, improving the efficiency of heat dissipation or heating of the battery cell. Compared to current solutions that only dissipate heat from the bottom of the battery cell, the solution of this application, where the first and second plates cooperate to dissipate heat from both sides of the battery cell, results in a more uniform temperature distribution within the battery cell, improving its consistency and thus extending its lifespan.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a battery thermal management system and battery pack. Background Technology

[0002] Battery thermal management is a core aspect of ensuring battery performance and safety. Current battery thermal management technologies primarily focus on dissipating the heat generated during battery operation, with common cooling methods including air cooling and liquid cooling.

[0003] As battery energy density increases and charge / discharge rates rise, existing air-cooling or liquid-cooling methods have limited heat dissipation effects, easily leading to uneven battery temperature distribution, affecting battery consistency and consequently battery lifespan. Utility Model Content

[0004] This application provides a battery thermal management system and battery pack. The first plate and the second plate can exchange heat with the battery cell on both sides at the same time, which can improve the efficiency of heat dissipation or heating treatment of the battery cell, and make the temperature of the battery cell more uniform, improve the consistency of the battery cell, and thus improve the service life of the battery cell.

[0005] In a first aspect, embodiments of this application provide a battery thermal management system, including...

[0006] First plate;

[0007] The second plate is spaced apart from the first plate along the first direction, so that an accommodating space is formed between the first plate and the second plate, the accommodating space being used to accommodate a single battery cell; the first direction is the thickness direction of the first plate.

[0008] A circulation channel is provided at the first plate and the second plate, and the circulation channel is used to transport the heat exchange medium.

[0009] In one possible implementation, the first plate has a first mating surface facing the second plate; the second plate has a second mating surface facing the first plate.

[0010] When the battery cell is housed in the accommodating space, both the first bonding surface and the second bonding surface are bonded to the outer wall of the battery cell by thermally conductive adhesive.

[0011] In one possible implementation, the circulation channel includes a first channel disposed within the first plate body;

[0012] The first plate is provided with a first liquid inlet pipe and a first liquid outlet pipe, both of which are connected to the first flow channel.

[0013] In one possible implementation, the first flow channel includes a first flow channel section and a second flow channel section;

[0014] The number of first flow channel segments is multiple; the multiple first flow channel segments extend along the second direction and are arranged at intervals along the third direction; the multiple first flow channel segments are all connected to the second flow channel segments; the first direction, the second direction and the third direction are perpendicular to each other;

[0015] A portion of the first flow channel sections are connected to the first inlet pipe, and another portion of the first flow channel sections are connected to the first outlet pipe.

[0016] In one possible implementation, a plurality of heat-conducting pillars are provided on the inner sidewall of the first flow channel, and the heat-conducting pillars extend along the first direction.

[0017] In one possible implementation, an opening is provided at the first plate body, the opening extends through the first plate body along the first direction, and the opening is located between two adjacent first flow channel segments.

[0018] In one possible implementation, the circulation channel includes a second channel disposed within the second plate body;

[0019] The second plate is provided with a second inlet pipe and a second outlet pipe, both of which are connected to the second flow channel.

[0020] In one possible implementation, the second flow channel includes a plurality of third flow channel segments extending along the second direction; the plurality of third flow channel segments are spaced apart along the third direction, and two adjacent third flow channel segments are interconnected.

[0021] One or more baffles are provided in the second flow channel, and the baffles extend in a direction perpendicular to the second direction.

[0022] In one possible implementation, a first manifold and a second manifold are also included;

[0023] The first manifold is connected to the first inlet pipe and the second inlet pipe via a first three-way valve; the second manifold is connected to the first outlet pipe and the second outlet pipe via a second three-way valve.

[0024] Secondly, embodiments of this application provide a battery pack, including,

[0025] Battery cell;

[0026] Such as the battery thermal management system mentioned above;

[0027] The battery cell is housed between the first plate and the second plate of the battery thermal management system.

[0028] This application provides a battery thermal management system and battery pack. Since the first plate and the second plate are located on both sides of the battery cell along the first direction, the first plate and the second plate can exchange heat with the battery cell on both sides simultaneously, which can improve the efficiency of heat dissipation or heating of the battery cell. Compared with the current solution that only dissipates heat from the bottom of the battery cell, the solution of dissipating heat from both sides of the battery cell by the cooperation of the first plate and the second plate in this application can make the temperature of the battery cell more uniform, improve the consistency of the battery cell, and thus improve the service life of the battery cell. Attached Figure Description

[0029] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0030] Figure 1 This is a first schematic diagram showing a battery cell housed between a first plate and a second plate, provided for some embodiments of this application.

[0031] Figure 2 This is a second schematic diagram showing a battery cell housed between a first plate and a second plate, provided for some embodiments of this application.

[0032] Figure 3 A schematic diagram of a battery thermal management system provided in some embodiments of this application;

[0033] Figure 4 A cross-sectional view of the first plate body provided in some embodiments of this application;

[0034] Figure 5 This is a cross-sectional view of the second plate provided in some embodiments of this application.

[0035] Figure label:

[0036] 100. First plate; 110. First mating surface; 120. First inlet pipe; 130. First outlet pipe; 140. Opening;

[0037] 200, Second plate; 210, Second mating surface; 220, Second inlet pipe; 230, Second outlet pipe;

[0038] 300, battery cell; 310, terminal post;

[0039] 400, First flow channel; 410, First flow channel section; 420, Second flow channel section; 430, Heat-conducting column;

[0040] 500, Second flow channel; 510, Third flow channel section; 511, Baffle plate;

[0041] 600. First manifold;

[0042] 700, Second manifold.

[0043] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0044] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0045] Battery thermal management typically employs cooling methods such as air cooling and liquid cooling. However, with the increase in battery energy density and charge / discharge rate, the heat dissipation effect of existing air cooling or liquid cooling methods is limited, easily leading to uneven temperature distribution within the battery, affecting battery consistency and consequently, battery lifespan.

[0046] This application provides a battery thermal management system and battery pack. Since the first plate and the second plate are located on both sides of the battery cell along a first direction, the first plate and the second plate can exchange heat with the battery cell on both sides simultaneously, which can improve the efficiency of heat dissipation or heating of the battery cell. Compared with the current solution that only dissipates heat from the bottom of the battery cell, the solution of dissipating heat from both sides of the battery cell by the cooperation of the first plate and the second plate in this application embodiment can make the temperature of the battery cell more uniform, improve the consistency of the battery cell, and thus improve the service life of the battery cell.

[0047] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0048] Firstly, see [the following] Figure 1 As shown, this application provides a battery thermal management system, including a first plate 100 and a second plate 200; the first plate 100 and the second plate 200 are spaced apart along a first direction X, wherein the first direction X is the thickness direction of the first plate 100 and the second plate 200, so that an accommodating space can be formed between the first plate 100 and the second plate 200.

[0049] Furthermore, the battery thermal management system in this embodiment also includes a supply system; a circulation channel is provided at both the first plate 100 and the second plate 200, and the circulation channel can be connected to the supply system, so that the supply system can supply heat exchange medium to the circulation channel, and the circulation channel can transport the heat exchange medium.

[0050] It should be noted that the heat exchange medium in the embodiments of this application can be either gas or liquid, and there is no particular limitation thereto. For example, since liquid cooling is usually used to dissipate heat from the battery, the heat exchange medium in the embodiments of this application is liquid, thereby better achieving heat dissipation of the battery.

[0051] In the embodiments of this application, see Figure 1 and Figure 2 As shown, the accommodating space between the first plate 100 and the second plate 200 can accommodate a single battery cell 300, and depending on the specifications of the battery pack, one or more single battery cells 300 can be accommodated in the accommodating space, without any particular limitation.

[0052] For example, when the battery cell 300 is placed in the accommodating space and the heat exchange medium is supplied to the circulation channel through the supply system, the heat exchange medium will first exchange heat with the first plate 100 and the second plate 200 during the process of transporting the heat exchange medium in the circulation channel, so as to regulate the temperature of the first plate 100 and the second plate 200. Then, the first plate 100 and the second plate 200 can exchange heat with the battery cell 300 respectively, thereby regulating the temperature of the battery cell 300.

[0053] Understandably, when the temperature of the heat exchange medium supplied by the supply system to the circulating channel is low, the heat exchange medium can lower the temperature of the first plate 100 and the second plate 200 by exchanging heat with them. Consequently, the lower-temperature first plate 100 and the second plate 200 can then exchange heat with the battery cells 300, achieving heat dissipation for the battery cells 300. Conversely, when the temperature of the heat exchange medium supplied by the supply system to the circulating channel is high, the heat exchange medium can raise the temperature of the first plate 100 and the second plate 200 by exchanging heat with them. Consequently, the higher-temperature first plate 100 and the second plate 200 can then exchange heat with the battery cells 300, achieving temperature increase for the battery cells 300. In this embodiment, the battery cell 300 can be subjected to heat dissipation or heating treatment depending on the temperature of the heat exchange medium transported in the circulating channel, thereby enabling the battery cell 300 to meet the requirements of use under different ambient temperatures and improving the stability and safety of the battery cell 300.

[0054] In the embodiments of this application, see Figure 1 and Figure 2 As shown, along the first direction X, since the first plate 100 and the second plate 200 are located on both sides of the battery cell 300, the first plate 100 and the second plate 200 can simultaneously exchange heat with the battery cell 300 on both sides, which can better improve the working efficiency of heat dissipation or heating treatment of the battery cell 300. Compared with the current solution that only dissipates heat from the bottom of the battery cell 300, the solution of the first plate 100 and the second plate 200 cooperating to dissipate heat from both sides of the battery cell 300 in this embodiment can make the temperature of the battery cell 300 more uniform, improve the consistency of the battery cell 300, and thus improve the service life of the battery cell 300.

[0055] It is worth mentioning that, since the battery cell 300 is located in the accommodating space between the first plate 100 and the second plate 200, the first plate 100 and the second plate 200 can limit the battery cell 300 along the first direction X, thereby improving the positional stability of the battery cell 300 in the first direction X, and thus better improving the stability and safety of the battery cell 300 in use.

[0056] In some implementations, see Figure 3 As shown, along the first direction X, the first plate 100 has a first contact surface 110 facing the second plate 200. When the battery cell 300 is placed between the first plate 100 and the second plate 200, the first plate 100 can be tightly attached to the outer wall of the battery cell 300 through the first contact surface 110.

[0057] In this embodiment, since the first bonding surface 110 is in close contact with the outer wall of the battery cell 300, the first plate 100 is in direct contact with the battery cell 300, which can improve the heat exchange efficiency between the first plate 100 and the battery cell 300 and improve the effect of heat dissipation or heating treatment of the battery cell 300.

[0058] Furthermore, in the embodiments of this application, see... Figure 1 and Figure 2 As shown, along the first direction X, the second plate 200 has a second contact surface 210 facing the first plate 100. When the battery cell 300 is placed between the first plate 100 and the second plate 200, the second plate 200 can be tightly attached to the outer wall of the battery cell 300 through the second contact surface 210.

[0059] In this embodiment, since the second bonding surface 210 is in close contact with the outer wall of the battery cell 300, the second plate 200 is in direct contact with the battery cell 300, which can improve the heat exchange efficiency between the second plate 200 and the battery cell 300, and improve the effect of heat dissipation or heating treatment of the battery cell 300.

[0060] It is worth mentioning that, in this embodiment of the application, along the first direction X, since the first plate 100 and the second plate 200 are in direct contact with the battery cell 300 on both sides, the first plate 100 and the second plate 200 can clamp the battery cell 300, thereby better limiting the battery cell 300 in the first direction X, avoiding positional displacement or shaking of the battery cell 300, and improving the stability and safety of the battery cell 300 in use.

[0061] Furthermore, at least one of the first bonding surface 110 and the second bonding surface 210 is bonded to the outer wall of the battery cell 300 by thermally conductive adhesive. For example, in the embodiments of this application, the first bonding surface 110 and the second bonding surface 210 are both bonded to the two outer walls of the battery cell 300 along the first direction X by thermally conductive adhesive, so that the first bonding surface 110 and the second bonding surface 210 can form a thermal coupling interface with the battery cell 300 through the thermally conductive adhesive, thereby improving the heat exchange efficiency between the first plate 100 and the second plate 200 and the battery cell 300.

[0062] In some implementations, see Figure 4 As shown, the circulating flow channel includes a first flow channel 400, wherein the first flow channel 400 is disposed within the first plate 100 and is connected to the supply system, so that the supply system can supply heat exchange medium to the first flow channel 400.

[0063] In this embodiment, the heat exchange medium can be transported in the first flow channel 400, and during this process, the heat exchange medium can continuously exchange heat with the first plate 100, thereby achieving the effect of regulating the temperature of the first plate 100.

[0064] Furthermore, in the embodiments of this application, see... Figure 1 , Figure 2 and Figure 3 As shown, a first liquid inlet pipe 120 and a first liquid outlet pipe 130 are provided at the first plate 100, and both the first liquid inlet pipe 120 and the first liquid outlet pipe 130 are connected to the first flow channel 400.

[0065] In this embodiment of the application, the first flow channel 400 is connected to the supply system through the first liquid inlet pipe 120 and the first liquid outlet pipe 130. For example, the supply system can supply heat exchange medium to the first flow channel 400 through the first liquid inlet pipe 120, and after the heat exchange medium is transported in the first flow channel 400 and exchanges heat with the first plate 100, the first liquid outlet pipe 130 can discharge the heat exchange medium in the first flow channel 400.

[0066] In some implementations, see Figure 4 As shown, the first flow channel 400 includes multiple first flow channel segments 410, each extending along the second direction Y and spaced apart along the third direction Z. In this embodiment, the second direction Y is perpendicular to the first direction X, and the third direction Z is perpendicular to both the first direction X and the second direction Y; that is, the first direction X, the second direction Y, and the third direction Z are perpendicular to each other.

[0067] Further, see Figure 4 As shown, the first flow channel 400 also includes a second flow channel section 420, wherein multiple first flow channel sections 410 are connected to the second flow channel section 420, so that multiple first flow channel sections 410 can be interconnected through the second flow channel section 420.

[0068] In this embodiment, the heat exchange medium supplied by the supply system to the first flow channel 400 can be transported in multiple first flow channel sections 410 and second flow channel sections 420. Since the multiple first flow channel sections 410 extend along the second direction Y and are arranged at intervals along the third direction Z, the first flow channel sections 410 cover the entire first plate 100. This allows the heat exchange medium entering the first flow channel 400 to fully contact the first plate 100, improving the heat exchange efficiency between the heat exchange medium and the first plate 100, and thus improving the effect of the heat exchange medium in regulating the temperature of the first plate 100.

[0069] For example, in the embodiments of this application, see Figure 4As shown, there are six first flow channel sections 410 and one second flow channel section 420. The six first flow channel sections 410 are connected to the second flow channel section 420 at the same end along the second direction Y, thereby realizing the connection of the six first flow channel sections 410.

[0070] Furthermore, in the embodiments of this application, see... Figure 4 As shown, a portion of the first flow channel sections 410 are connected to the first inlet pipe 120, and another portion of the first flow channel sections 410 are connected to the first outlet pipe 130. When the supply system supplies heat exchange medium into the first flow channel 400 through the first inlet pipe 120, the heat exchange medium is first transported in a portion of the first flow channel sections 410, then enters the other portion of the first flow channel sections 410 through the second flow channel section 420, and finally is discharged through the first outlet pipe 130.

[0071] For example, see Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown in this embodiment, along the second direction Y, the first inlet pipe 120 and the first outlet pipe 130 are located at the same end of the first flow channel section 410, and the first inlet pipe 120 and the second flow channel section 420 are respectively located at the two ends of the first flow channel section 410 along the second direction Y, and the first outlet pipe 130 and the second flow channel section 420 are respectively located at the two ends of the first flow channel section 410 along the second direction Y. Three of the first flow channel sections 410 are connected to the first inlet pipe 120, and the other three are connected to the first outlet pipe 130. When the supply system supplies heat exchange medium to the first flow channel 400 through the first inlet pipe 120, the heat exchange medium first enters the three first flow channel sections 410 and is transported, then enters the other three first flow channel sections 410 through the second flow channel section 420, and finally is discharged through the first outlet pipe 130.

[0072] It is worth mentioning that the first liquid inlet pipe 120 and the first liquid outlet pipe 130 are located at the two ends of the first flow channel section 410 along the second direction Y, respectively, so that after the heat exchange medium enters the first flow channel 400, the heat exchange medium can better cover the first plate 100, thereby improving the heat exchange efficiency between the heat exchange medium and the first plate 100.

[0073] In this embodiment of the application, by setting multiple first flow channel sections 410 and second flow channel sections 420, the flow path of the heat exchange medium in the first flow channel 400 can be extended more effectively, so that the heat exchange medium can fully contact the first plate 100, and correspondingly, the heat exchange time between the heat exchange medium and the first plate 100 can be extended, thereby improving the heat exchange efficiency between the heat exchange medium and the first plate 100 and improving the effect of the heat exchange medium in regulating the temperature of the first plate 100.

[0074] In some embodiments, see Figure 4 As shown, a plurality of heat-conducting columns 430 are provided on the inner sidewall of the first flow channel 400, and the plurality of heat-conducting columns 430 extend along the first direction X. When the heat exchange medium flows in the first flow channel 400, the plurality of heat-conducting columns 430 can penetrate into the interior of the heat exchange medium. That is to say, by providing the heat-conducting columns 430, the contact area between the first plate 100 and the heat exchange medium can be increased, thereby improving the heat exchange efficiency between the first plate 100 and the heat exchange medium.

[0075] For example, in this embodiment of the application, a plurality of heat-conducting pillars 430 are evenly distributed in the first flow channel section 410 and the second flow channel section 420, wherein the plurality of heat-conducting pillars 430 in the first flow channel section 410 are arranged at intervals along the second direction Y, and the plurality of heat-conducting pillars 430 in the second flow channel section 420 are arranged at intervals along the third direction Z.

[0076] It is worth mentioning that the multiple heat-conducting columns 430 set in the first flow channel 400 can also play a role in turbulence of the heat exchange medium, improve the flow of the heat exchange medium in the first flow channel 400, and thus improve the heat exchange efficiency between the first plate 100 and the heat exchange medium.

[0077] In this embodiment, the heat-conducting pillar 430 is integrally formed by stamping the first plate 100, thereby enabling the heat-conducting pillar 430 to be integrally formed with the first plate 100, which improves the structural stability of the first plate 100 in the first direction X, the second direction Y, and the third direction Z.

[0078] In some implementations, see Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, an opening 140 is provided on the first plate 100, wherein the opening 140 penetrates the first plate 100 along the first direction X, so that the other side of the first plate 100 can be viewed from one side of the first plate 100 through the opening 140.

[0079] For example, in the embodiments of this application, see Figure 1 and Figure 2As shown, the battery cell 300 is housed in the space between the first plate 100 and the second plate 200. Workers can view the battery cell 300 through the opening 140 on the first plate 100, and thus visually assess the position and status of the battery cell 300, improving the safety of the battery cell 300. Of course, installation or maintenance tools can also be used to install or maintain the battery cell 300 through the opening 140, making the work more flexible and convenient.

[0080] Furthermore, in this embodiment, the opening 140 is located between two adjacent first flow channel segments 410. Since the multiple first flow channel segments 410 extend along the second direction Y, each first flow channel segment 410 has a length corresponding to the first plate 100. The multiple first flow channel segments 410 are arranged at intervals along the third direction Z, thus pre-reserving space between adjacent first flow channel segments 410 for setting the opening 140. This allows the first flow channel 400 to better cover the first plate 100 while also satisfying the requirement for the opening 140. This enables the first plate 100 to not only perform heat dissipation or heating treatment on the battery cell 300 but also provide convenient operation for staff through the opening 140.

[0081] For example, in this embodiment of the application, the number of openings 140 is set to three, and the three openings 140 are arranged at intervals along the third direction Z.

[0082] In some implementations, see Figure 5 As shown, the circulating flow channel includes a second flow channel 500, wherein the second flow channel 500 is disposed within the second plate 200 and is connected to the supply system, so that the supply system can supply heat exchange medium to the second flow channel 500.

[0083] In this embodiment, the heat exchange medium can be transported in the second flow channel 500, and during this process, the heat exchange medium can continuously exchange heat with the second plate 200, thereby achieving the effect of regulating the temperature of the second plate 200.

[0084] Furthermore, in the embodiments of this application, see... Figure 1 , Figure 2 and Figure 3 As shown, a second inlet pipe 220 and a second outlet pipe 230 are provided at the second plate 200, and both the second inlet pipe 220 and the second outlet pipe 230 are connected to the second flow channel 500.

[0085] In this embodiment of the application, the second flow channel 500 is connected to the supply system through the second inlet pipe 220 and the second outlet pipe 230. For example, the supply system can supply heat exchange medium to the second flow channel 500 through the second inlet pipe 220, and after the heat exchange medium is transported in the second flow channel 500 and exchanges heat with the second plate 200, the second outlet pipe 230 can discharge the heat exchange medium in the second flow channel 500.

[0086] In some implementations, see Figure 5 As shown, the second flow channel 500 includes a plurality of third flow channel segments 510, wherein the plurality of third flow channel segments 510 extend along the second direction Y, and the plurality of third flow channel segments 510 are arranged at intervals along the third direction Z, and adjacent third flow channel segments 510 are interconnected.

[0087] When the supply system supplies heat exchange medium to the second flow channel 500 through the second inlet pipe 220, the heat exchange medium first enters one of the third flow channel sections 510, and then sequentially enters the adjacent third flow channel sections 510 along the third direction Z. Finally, it is discharged through the second outlet pipe 230. During this process, since multiple third flow channel sections 510 extend along the second direction Y and are arranged at intervals along the third direction Z, the third flow channel sections 510 can cover the entire second plate 200. This allows the heat exchange medium entering the second flow channel 500 to fully contact the second plate 200, improving the heat exchange efficiency between the heat exchange medium and the second plate 200, and thus improving the effect of the heat exchange medium in regulating the temperature of the second plate 200.

[0088] Furthermore, in the embodiments of this application, see... Figure 5 As shown, along the third direction Z, the two outermost third flow channel sections 510 are connected to the second inlet pipe 220 and the second outlet pipe 230, respectively. When the supply system supplies heat exchange medium into the second flow channel 500 through the second inlet pipe 220, the heat exchange medium can flow sequentially through each third flow channel section 510 along the third direction Z, and finally be discharged through the second outlet pipe 230.

[0089] For example, in the embodiments of this application, see Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, the second inlet pipe 220 and the second outlet pipe 230 are located at the same end of the third flow channel section 510, thereby enabling the heat exchange medium supplied by the supply system to the second flow channel 500 to fill the entire number of the third flow channel sections 510, so that the heat exchange medium can fully contact the second plate 200.

[0090] In this embodiment, by setting multiple third flow channel sections 510, the flow path of the heat exchange medium in the second flow channel 500 can be extended more effectively, so that the heat exchange medium can fully contact the second plate 200, and correspondingly, the heat exchange time between the heat exchange medium and the second plate 200 can be extended, thereby improving the heat exchange efficiency between the heat exchange medium and the second plate 200 and improving the effect of the heat exchange medium in regulating the temperature of the second plate 200.

[0091] In some implementations, see Figure 5 As shown, a baffle 511 is provided in the third flow channel section 510, and the baffle 511 extends along the second direction Y.

[0092] Understandably, the baffle 511 can divide the space of the third flow channel section 510. When the heat exchange medium flows in the third flow channel section 510, under the action of the baffle 511, the heat exchange medium can be separated into two streams. Since the baffle 511 extends into the interior of the heat exchange medium, it can increase the contact area between the heat exchange medium and the second plate 200, thereby improving the heat exchange efficiency between the heat exchange medium and the second plate 200.

[0093] It should be noted that the number of baffles 511 can be one or more. For example, in this embodiment of the application, the number of baffles 511 is set to multiple, and multiple baffles 511 are provided in each third flow channel section 510. When the heat exchange medium flows in the third flow channel section 510, the multiple baffles 511 can separate the heat exchange medium into multiple streams, thereby increasing the contact area between the heat exchange medium and the second plate 200.

[0094] Furthermore, in this embodiment of the application, multiple baffles 511 are arranged at intervals in the third direction Z, such that the multiple baffles 511 in each third flow channel section 510 are arranged at intervals in the third direction Z, thereby realizing the division of the heat exchange medium into multiple streams.

[0095] It is worth mentioning that when the heat exchange medium flows in the third flow channel section 510, the heat exchange medium will first collide with the end of the baffle 511 and then be divided into multiple streams by the baffle 511. During this process, the baffle 511 can play a turbulent role on the heat exchange medium, improve the flow of the heat exchange medium in the second flow channel 500, and thus improve the heat exchange efficiency between the second plate 200 and the heat exchange medium.

[0096] In some implementations, see Figure 1 , Figure 2 and Figure 3As shown, the first inlet pipe 120 and the second inlet pipe 220 are both disposed on the first mating surface 110 and connected to the first flow channel 400, and the second inlet pipe 220 and the second outlet pipe 230 are both disposed on the second mating surface 210 and connected to the second flow channel 500.

[0097] In some implementations, see Figure 1 , Figure 2 and Figure 3 As shown, the battery thermal management system also includes a first manifold 600 and a second manifold 700, wherein the first manifold 600 is connected to the first liquid inlet pipe 120 and the second liquid inlet pipe 220, and the second manifold 700 is connected to the first liquid outlet pipe 130 and the second liquid outlet pipe 230.

[0098] In this embodiment, the first inlet pipe 120 and the second inlet pipe 220 are connected to the supply system through the first manifold 600, so that the supply system can supply heat exchange medium to the first inlet pipe 120 and the second inlet pipe 220 respectively through the first manifold 600. Then, the first inlet pipe 120 and the second inlet pipe 220 respectively transport the heat exchange medium to the first flow channel 400 and the second flow channel 500, while the first outlet pipe 130 and the second outlet pipe 230 can respectively export the heat exchange medium in the first flow channel 400 and the second flow channel 500 to the second manifold 700.

[0099] Furthermore, in this embodiment, the first manifold 600 is connected to the first inlet pipe 120 and the second inlet pipe 220 via a first three-way valve, so that the flow rate of the heat exchange medium delivered to the first inlet pipe 120 and the second inlet pipe 220 can be controlled by adjusting the first three-way valve, thereby better realizing the adjustment of the flow rate of the heat exchange medium in the first flow channel 400 and the second flow channel 500.

[0100] Furthermore, in this embodiment, the second manifold 700 is connected to the first outlet pipe 130 and the second outlet pipe 230 via a second three-way valve, so that the flow rate of the heat exchange medium delivered to the second manifold 700 through the first outlet pipe 130 and the second outlet pipe 230 can be controlled by adjusting the second three-way valve, thereby better realizing the adjustment of the flow rate of the heat exchange medium in the first flow channel 400 and the second flow channel 500.

[0101] In some embodiments, a first pressure sensor is provided in the first flow channel 400 and a second pressure sensor is provided in the second flow channel 500. The first pressure sensor is used to monitor the hydraulic pressure of the heat exchange medium in the first flow channel 400 in real time, and the second pressure sensor is used to monitor the hydraulic pressure of the heat exchange medium in the second flow channel 500 in real time.

[0102] It is understood that by setting up the first pressure sensor and the second pressure sensor, intelligent monitoring of the hydraulic pressure of the heat exchange medium in the first flow channel 400 and the second flow channel 500 can be better realized. Furthermore, through the monitoring feedback of the first pressure sensor and the second pressure sensor, it is possible to detect in a timely manner whether there is a leak in the first flow channel 400 and the second flow channel 500, thereby improving the safety of the battery thermal management system of this application embodiment.

[0103] It is worth mentioning that by using the first pressure sensor and the second pressure sensor to monitor the first flow channel 400 and the second flow channel 500 in real time, the flow balance of the heat exchange medium in the first flow channel 400 and the second flow channel 500 can be better achieved.

[0104] For example, the data monitored by the first pressure sensor and the second pressure sensor are compared. When the hydraulic data monitored by the first pressure sensor is lower than the hydraulic data monitored by the second pressure sensor, it indicates that the flow rate of the heat exchange medium in the first flow channel 400 is less than the flow rate of the heat exchange medium in the second flow channel 500. At this time, at least one of the first three-way valve and the second three-way valve can be adjusted to make the flow rate of the heat exchange medium in the first flow channel 400 and the flow rate of the heat exchange medium in the second flow channel 500 approximately equal. This makes the temperature of the first plate 100 and the temperature of the second plate 200 approximately equal, so that the first plate 100 and the second plate 200 have similar heat exchange capabilities for the battery cell 300, thereby improving the temperature uniformity of the battery cell 300 and improving the consistency of the battery cell 300. Similarly, when the hydraulic data monitored by the first pressure sensor is higher than the hydraulic data monitored by the second pressure sensor, it indicates that the flow rate of the heat exchange medium in the first flow channel 400 is greater than the flow rate of the heat exchange medium in the second flow channel 500. At this time, at least one of the first three-way valve and the second three-way valve can be adjusted to make the flow rate of the heat exchange medium in the first flow channel 400 and the flow rate of the heat exchange medium in the second flow channel 500 approximately equal. This makes the temperature of the first plate 100 and the temperature of the second plate 200 approximately equal, so that the first plate 100 and the second plate 200 have similar heat exchange capabilities for the battery cell 300, thereby improving the temperature uniformity of the battery cell 300 and improving the consistency of the battery cell 300.

[0105] Secondly, this application provides a battery pack that includes the aforementioned battery thermal management system, thus possessing the corresponding technical effects and advantages.

[0106] Further, see Figure 1 and Figure 2 As shown, the battery pack in this embodiment of the application also includes battery cells 300, and the number of battery cells 300 can be one or more, which is not particularly limited.

[0107] In the embodiments of this application, see Figure 1 and Figure 2 As shown, the battery cell 300 is housed between the first plate 100 and the second plate 200 of the battery thermal management system, and the terminal post 310 of the battery cell 300 is located on the side wall of the battery cell 300 along the third direction Z.

[0108] Finally, it should be noted that other embodiments of this utility model will readily occur to those skilled in the art upon consideration of the specification and practice of the utility model disclosed herein. This utility model is intended to cover any variations, uses, or adaptations of this utility model that follow the general principles of this utility model and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this utility model is limited only by the appended claims.

Claims

1. A battery thermal management system, characterized by: include, First plate (100); The second plate (200) is spaced apart from the first plate (100) along a first direction, such that an accommodating space is formed between the first plate (100) and the second plate (200), the accommodating space being used to accommodate a battery cell (300); the first direction is the thickness direction of the first plate (100); A circulation channel is provided at the first plate (100) and the second plate (200), and the circulation channel is used to transport the heat exchange medium.

2. The battery thermal management system according to claim 1, characterized in that: The first plate (100) has a first mating surface (110) facing the second plate (200); the second plate (200) has a second mating surface (210) facing the first plate (100). When the battery cell (300) is housed in the accommodating space, the first bonding surface (110) and the second bonding surface (210) are both bonded to the outer wall of the battery cell (300) by thermally conductive adhesive.

3. The battery thermal management system of claim 1, wherein: The circulation channel includes a first channel (400), which is disposed within the first plate (100); The first plate (100) is provided with a first inlet pipe (120) and a first outlet pipe (130), both of which are connected to the first flow channel (400).

4. The battery thermal management system of claim 3, wherein: The first flow channel (400) includes a first flow channel section (410) and a second flow channel section (420); The number of the first flow channel segments (410) is multiple; the multiple first flow channel segments (410) extend along the second direction and are arranged at intervals along the third direction; the multiple first flow channel segments (410) are all connected to the second flow channel segments (420); the first direction, the second direction and the third direction are perpendicular to each other; A portion of the first flow channel section (410) is connected to the first inlet pipe (120), and another portion of the first flow channel section (410) is connected to the first outlet pipe (130).

5. The battery thermal management system of claim 3, wherein: A plurality of heat-conducting columns (430) are provided on the inner sidewall of the first flow channel (400), and the heat-conducting columns (430) extend along the first direction.

6. The battery thermal management system of claim 4, wherein: An opening (140) is provided at the first plate (100), the opening (140) penetrates the first plate (100) along the first direction, and the opening (140) is located between two adjacent first flow channel sections (410).

7. The battery thermal management system of claim 4 or 6, wherein: The circulation channel includes a second channel (500), which is disposed within the second plate (200); The second plate (200) is provided with a second inlet pipe (220) and a second outlet pipe (230), both of which are connected to the second flow channel (500).

8. The battery thermal management system of claim 7, wherein: The second flow channel (500) includes a plurality of third flow channel segments (510) extending along the second direction; the plurality of third flow channel segments (510) are spaced apart along the third direction, and two adjacent third flow channel segments (510) are interconnected; One or more baffles (511) are provided in the second flow channel (500), and the baffles (511) extend in a direction perpendicular to the second direction.

9. The battery thermal management system of claim 7, wherein: It also includes a first manifold (600) and a second manifold (700); The first manifold (600) is connected to the first inlet pipe (120) and the second inlet pipe (220) through the first three-way valve; the second manifold (700) is connected to the first outlet pipe (130) and the second outlet pipe (230) through the second three-way valve.

10. A battery pack, characterized by: include, Battery cell (300); The battery thermal management system as described in any one of claims 1-9; The battery cell (300) is housed between the first plate (100) and the second plate (200) of the battery thermal management system.

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