WO2023280284A1

WO2023280284A1 - Power battery assembly and vehicle

Info

Publication number: WO2023280284A1
Application number: PCT/CN2022/104452
Authority: WO
Inventors: 王志强; 张国炜; 汪志超; 刘安龙; 韩海滨; 徐鹏; 林艺垚
Original assignee: 广州小鹏汽车科技有限公司
Priority date: 2021-07-08
Filing date: 2022-07-07
Publication date: 2023-01-12
Also published as: CN113471609A

Abstract

A power battery assembly and a vehicle. The power battery assembly (100) comprises a plurality of battery modules (10) arranged in parallel. Each battery module (10) comprises a battery cell (11) and a cooling device (12). The cooling device (12) comprises a cooling plate (120). The cooling plate (120) comprises an upper plate (121) and a lower plate (122). The upper plate (121) covers the lower plate (122), the upper plate (121) and the lower plate (122) jointly form a cooling flow channel (123), and the battery cell (11) is provided on the upper plate (121).

Description

Power battery assembly and vehicle

Cross References to Related Applications

This application claims the priority of the Chinese patent application number "202110771976.9" filed by Guangzhou Xiaopeng Automobile Technology Co., Ltd. on July 8, 2021, with the application name "Power Battery Assembly and Vehicle".

technical field

This application relates to the field of new energy vehicles, in particular to a power battery assembly and a vehicle.

Background technique

Due to the continuous advancement of the theme of green environmental protection, the use of new energy vehicles is increasing year by year. The power battery assembly is an important part of electric vehicles. At present, many power battery assemblies use cooling plates integrated in the lower box. And this kind of scheme often adopts no module technology (CELL TO PACK, CTP). In the solution where the cooling plate is integrated into the lower box, the power battery assembly and the cooling plate are usually bonded with thermally conductive structural adhesive to increase the strength of the fixed structure. However, this solution also makes it difficult to disassemble the power battery assembly, which will cause damage to the entire cooling plate when a problem occurs in the power battery assembly, thereby increasing maintenance costs.

application content

In order to solve the problem that the entire cooling plate will be damaged when the power battery assembly fails and disassembled, thereby increasing the maintenance cost, the embodiment of the present application provides a power battery assembly, which realizes that when the power battery assembly fails, It only needs to replace a battery module in the power battery assembly to reduce maintenance costs.

The power battery assembly provided in the embodiment of the present application includes a plurality of battery modules arranged side by side, each of the battery modules includes a battery cell and a cooling device, the cooling device includes a cooling plate, and the cooling plate includes an upper A plate and a lower plate, the upper plate is covered on the lower plate, the upper plate and the lower plate together form a cooling channel, and the electric core is arranged on the upper plate.

In some embodiments, the cooling channel includes a plurality of parallel sub-channels.

In some embodiments, the lower plate includes a plurality of connected grooves, and the upper plate covers the grooves to form the cooling channel.

In some embodiments, the lower plate includes an outlet and an inlet, the number of the outlet and the inlet is at least two, the inlet corresponds to the outlet one by one, and the outlet and the inlet are spaced apart Set on the lower plate, the outlet and the inlet communicate with the groove.

In some embodiments, the cooling device includes a first water pipe joint and a second water pipe joint arranged at intervals, the first water pipe joint penetrates the upper plate and communicates with the inlet, and the second water pipe joint The joint passes through the upper plate and communicates with the outlet.

In some embodiments, the battery module includes an end plate and a side plate connected to the end plate, the end plate and the side plate surround the battery core, the end plate and the side plate To be connected with the cooling device, the water pipe joint is passed through the end plate.

In some embodiments, the upper plate and/or the lower plate are formed with joint ears, and the cooling plate is fixedly connected to the end plate through the joint ears.

In some embodiments, the upper plate and/or the lower plate include a body, the joint ear portion is connected to an edge of the body, and a depression is formed at the joint between the joint ear portion and the body.

In some embodiments, the glue-limiting frame is fixed between the battery core and the upper plate, and the glue-limiting frame surrounds the glue.

An embodiment of the present application provides a vehicle, the vehicle includes a vehicle body and the power battery assembly of any of the above-mentioned embodiments, and the power battery assembly is installed on the vehicle body.

In this way, a power battery assembly is formed by assembling a plurality of battery modules. When a battery module of the power battery assembly fails, the battery module can be directly replaced to reduce maintenance costs. In addition, the cooling device in the power battery assembly can cool a single battery cell, so that each cooling device in the power battery assembly does not interfere with each other, and the cooling efficiency of the power battery assembly is improved.

Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.

Description of drawings

The above and/or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, wherein:

Fig. 1 is a schematic plan view of a power battery assembly according to an embodiment of the present application;

2 is a partial schematic diagram of a battery module according to an embodiment of the present application;

Fig. 3 is a partial structural schematic diagram of a power battery assembly according to an embodiment of the present application;

Fig. 4 is another schematic diagram of the partial structure of the power battery assembly according to the embodiment of the present application;

Fig. 5 is a schematic structural view of the lower plate of the embodiment of the present application;

Fig. 6 is a partial schematic diagram of the lower plate of the embodiment of the present application;

FIG. 7 is a schematic plan view of a vehicle according to an embodiment of the present application.

Description of main component symbols:

Power battery assembly 100, battery module 10, battery cell 11, cooling device 12, cooling plate 120, upper plate 121, through hole 1211, lower plate 122, groove 1221, cooling channel 123, sub-channel 1231, inlet 124, outlet 125, first water pipe joint 126, second water pipe joint 127, joint ear 128, depression 1281, body 129, end plate 131, side plate 132, glue 14, glue limit frame 30, reinforcing rib 31, vehicle 200, body 40.

detailed description

Embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary, and are intended to explain the present application, and should not be construed as limiting the present application.

The following disclosure provides many different implementations or examples for implementing different structures of the present application. To simplify the disclosure of the present application, components and arrangements of specific examples are described below. Of course, they are examples only and are not intended to limit the application. Furthermore, the present application may repeat reference numerals and/or reference letters in various instances, such repetition is for simplicity and clarity and does not in itself indicate a relationship between the various embodiments and/or arrangements discussed. In addition, various specific process and material examples are provided herein, but one of ordinary skill in the art may recognize the use of other processes and/or the use of other materials.

Referring to Fig. 1-Fig. 4, the embodiment of the present application provides a power battery assembly 100, the power battery assembly 100 includes a plurality of battery modules 10 arranged side by side, each battery module 10 includes a battery cell 11 and a cooling The device 12, the cooling device 12 includes a cooling plate 120, the cooling plate 120 includes an upper plate 121 and a lower plate 122, the upper plate 121 is covered on the lower plate 122, the upper plate 121 and the lower plate 122 together form a cooling channel 123, and the battery cell 11 set on the upper plate 121.

In this way, the power battery assembly 100 is formed by assembling a plurality of battery modules 10 . When a certain battery module 10 of the power battery assembly 100 fails, the battery module 10 can be directly replaced to reduce maintenance costs. In addition, the cooling device 12 in the power battery assembly 100 can cool a single cell 11 , so that the cooling devices 12 in the power battery assembly 100 do not interfere with each other, and the cooling efficiency of the power battery assembly 100 is improved.

Specifically, the battery cell 11 may be a lead-acid storage battery, a nickel-hydrogen storage battery or a lithium battery or the like. Preferably, the batteries 11 mostly use lithium batteries, because lithium batteries have the advantages of light weight, many charge and discharge cycles, high temperature applicability, and environmental protection. The battery cell 11 may be in the shape of a cuboid or a cylinder, and the shape of the battery cell 11 is not limited here. The battery cell 11 can be fixedly installed on the side of the upper board 121 away from the lower board 122 .

After working for a period of time, the battery cell 11 will become hot and hot. Long-term and high temperature heating will lead to a decrease in the charging efficiency of the battery cell 11, a decrease in battery capacity, and a shortened service life. Therefore, it is necessary to use a cooling device 12 to The battery cell 11 dissipates heat. The battery cell 11 and the cooling plate 120 are attached together, and the cooling plate 120 is filled with a cooling medium. When the battery cell 11 needs to dissipate heat, the battery cell 11 can exchange heat with the cooling medium through the cooling plate 120 to cool the battery cell 11. Purpose.

The upper plate 121 and the lower plate 122 of the cooling plate 120 are made of the same material, which can be a metal material or a non-metallic material with good thermal conductivity, and the specific material is not limited. The upper plate 121 and the lower plate 122 may be formed by stamping. Preferably, the upper plate 121 and the lower plate 122 can be made of aluminum, which can reduce the weight of the cooling plate 120. The boundaries of the upper plate 121 and the lower plate 122 are the same so that they can be fixedly connected by welding to ensure that when the cooling medium is injected into the cooling channel 123, the cooling medium will not leak, thereby ensuring the heat dissipation effect of the cooling device 12.

Wherein, the upper plate 121 and the lower plate 122 can be rectangular, circular, or other irregular shapes, and the shapes of the upper plate 121 and the lower plate 122 are not limited here. Preferably, the upper plate 121 and the lower plate 122 are rectangular, which facilitates the assembly of multiple battery modules 10 and makes the structure of the power battery assembly 100 more compact.

Compared with the power battery assembly of the moduleless technology (CELL TO PACK, CTP) that integrates the cooling plate into the lower box, in the case of the same size of the power battery assembly, the embodiment of the present application consists of many The size of the cooling plate 120 of the power battery assembly 100 assembled with each battery module 10 is smaller, so that the development cycle of the cooling plate 120 can be reduced, thereby reducing the production cost. Since the size of the cooling plate 120 is relatively small, it can ensure the flatness of the cooling plate 120 during the processing, so that the bonding effect between the cooling plate 120 and the electric core 11 is better, so that the cooling plate 120 has a better effect on the electric core 11. The cooling effect is better.

Referring to FIG. 5 , in some embodiments, the cooling channel 123 includes a plurality of parallel sub-channels 1231 . In this way, the plurality of sub-channels 1231 in parallel can improve the cooling utilization rate of the cooling medium, increase the contact area between the sub-channels 1231 and the cooling medium in a limited space, and further increase heat dissipation efficiency.

Specifically, each sub-channel 1231 can be in a U-shaped curved shape, and multiple sub-channels 1231 connected in parallel can also reduce the temperature difference between the cells 11 . At the same time, the interaction between adjacent sub-runners 1231 can be accelerated to improve heat dissipation efficiency. For example, when some of the sub-channels 1231 are blocked or dried up, the cooling medium will flow to the remaining connected sub-channels 1231 , which greatly improves the heat dissipation performance of the cooling plate 120 .

Please refer to FIG. 3 and FIG. 5 , in some embodiments, the lower plate 122 includes a plurality of connected grooves 1221 , and the upper plate 121 covers the grooves 1221 to form the cooling channel 123 . In this way, when the upper plate 121 is covered on the lower plate 122, the upper plate 121 and the groove 1221 can jointly form a hollow cooling channel 123 so that the cooling medium can circulate therein, thereby taking away the heat of the battery cell 11 to achieve the purpose of heat dissipation .

Specifically, the upper plate 121 is used as a cover plate to cover the lower plate 122, and the groove 1221 on the lower plate 122 can be formed by stamping. The cooling channel 123 is used for the circulation of the cooling medium, so that the flowing cooling medium can take away part of the heat of the electric core 11 . Wherein, the cooling medium may be a liquid medium or a gas medium, which is not limited in this embodiment of the present application. For example, in one example, the cooling medium may be water.

5, in some embodiments, the lower plate 122 includes an inlet 124 and an outlet 125, the number of the outlet 125 and the inlet 124 is at least two, the inlet 124 corresponds to the outlet 125, and the outlet 125 and the inlet 124 are separated. Set on the lower plate 122 , the outlet 125 and the inlet 124 communicate with the groove 1221 . In this way, the configuration of the inlet 124 and the outlet 125 facilitates the injection and outflow of the cooling medium, so as to flow in the groove 1221 to dissipate heat from the battery cell 11 .

Specifically, the cooling medium enters the groove 1221 through the inlet 124 , the cooling medium flows in the groove 1221 to dissipate heat from the battery cell 11 , and finally the cooling medium flows out from the outlet 125 . In one example, when the lower plate 122 has a regular shape, the outlet 125 and the inlet 124 may be symmetrical along the geometric central axis of the lower plate 122 and arranged at intervals on the same side. Wherein, the number of outlets 125 and inlets 124 can be increased according to heat dissipation requirements, and the same group of inlets 124 and outlets 125 are all arranged on the same side. In one example, the outlet 125 and the inlet 124 may also be disposed on different sides of the lower plate 122 . With the increase of the number of inlets 124 and outlets 125 , the flow speed of the cooling medium in the groove 1221 is faster, so that the cooling device 12 can dissipate heat from the battery cell 11 faster.

Referring to FIG. 3 and FIG. 4 , in some embodiments, the cooling device 12 includes a first water pipe joint 126 and a second water pipe joint 127 arranged at intervals, the first water pipe joint 126 passes through the upper plate 121 and communicates with the inlet 124 , the second water pipe joint 127 passes through the upper plate 121 and communicates with the outlet 125 .

In this way, the cooling medium can be injected into the cooling channel 123 of the cooling plate 120 through the first water pipe joint 126 to dissipate heat from the battery cell 11, and the heated cooling medium can flow out from the second water pipe joint 127, thereby completing the cooling of the battery cell 11. Heat dissipation.

Specifically, a through hole 1211 can be provided on the upper plate 121, so that the first water pipe joint 126 and the second water pipe joint 127 can be communicated with the inlet 124 and the outlet 125 on the lower plate 122 through the through hole 1211, thereby facilitating the flow from the outside to the water pipe. A cooling medium is passed into the cooling device 12 and the cooling medium flows out to the outside. The first water pipe joint 126 and the second water pipe joint 127 can be made of zinc alloy, can also be made of stainless steel, and can also be made of plastic material. Limit. Preferably, the first water pipe joint 126 and the second water pipe joint 127 are nylon plastic water pipe joints, so that the weight can be reduced and the lightweight design of the power battery assembly 100 can be realized. In addition, the nylon plastic water pipe joint has good shape and is convenient layout. It can be understood that when the number of inlets 124 and outlets 125 on the lower plate 122 increases, the number of through holes 1211, first water pipe joints 126 and second water pipe joints 127 also increases correspondingly, and it is necessary to ensure that each inlet 124 and outlet 125 Correspondingly communicate with the first water pipe joint 126 and the second water pipe joint 127 respectively.

Please refer to FIG. 1 and FIG. 2 together. In some embodiments, the battery module 10 includes an end plate 131 and a side plate 132 , and the side plate 132 is connected to the end plate 131 . The end plate 131 and the side plate 132 surround the battery cell 11 , and the end plate 131 and the side plate 132 are connected to the cooling device 12 , and the first water pipe joint 126 and the second water pipe joint 127 pass through the end plate 131 . In this way, the end plate 131 and the side plate 132 can be arranged around the battery cell 11 to protect the battery cell 11, and at the same time, the first water pipe joint 126 and the second water pipe joint 127 can be penetrated in the end plate 131 to avoid damage caused by external forces. Collision damage.

Specifically, the end plate 131 and the side plate 132 can be made of aluminum, and the end plate 131 and the side plate 132 can be fixed together by welding, or can be integrally formed. The end plate 131 and the side plate 132 can be rectangular plates or other shapes. The end plate 131 , the side plate 132 and the cooling device 12 can be fixed together by welding, or can be fastened by screwing. In one embodiment, the cooling plate 120 is fixed on the end plate 131 and the side plate 132 , and the battery cells 11 are fixed on the end plate 131 and the side plate 132 and connected to the cooling plate 120 , thereby forming a battery module 10 . The end plate 131 and the side plate 132 can serve as the frame of the battery module 10 . In one example, the first water pipe joint 126 and the second water pipe joint 127 can be designed independently of the end plate, that is to say, after the end plate 131 and the side plate 132 are connected to the cooling device 12, the first water pipe joint 126 The second water pipe joint 127 is inserted into the through hole 1211 of the end plate 131 and the upper plate 121 , and communicates with the inlet 124 and the outlet 125 of the lower plate 122 .

In another example, the first water pipe joint 126 and the second water pipe joint 127 can be fixedly disposed in the end plate 131 , so that the loss of the first water pipe joint 126 and the second water pipe joint 127 can be avoided. In this case, the installation method of the end plate 131 and the cooling device 12 is to first insert the first water pipe joint 126 and the second water pipe joint 127 into the through hole 1211 of the upper plate 121, and then tighten the end plate 131 and the cooling device 12. Fixed connection.

Referring to FIGS. 2 and 3 , in some embodiments, the upper plate 121 and/or the lower plate 122 are formed with joint ears 128 , and the cooling plate 120 is fixedly connected to the end plate 131 through the joint ears 128 . In this way, the joint ear portion 128 of the cooling plate 120 can be fixedly connected to the end plate 131 by self-piercing riveting technology.

Specifically, only the upper plate 121 may be formed with joint ears 128 , or only the lower plate 122 may be formed with joint ears 128 , or both the upper plate 121 and the lower plate 122 may have joint ears 128 . Wherein, the number of the joint ears 128 may be multiple, and the multiple joint ears 128 are arranged at intervals along the circumferential direction of the upper plate 121 and/or the lower plate 122 .

Self-piercing riveting technology (Self-Piercing Riveting, SPR) is a cold connection technology used to connect two or more plates. After the special rivet penetrates the top sheet, under the action of the riveting die, the hollow structure at the tail of the rivet expands and penetrates without piercing the bottom sheet, thus forming a firm riveting point.

Furthermore, a driving device such as a hydraulic cylinder or a servo motor can be used to provide power to directly press the rivet into the joint ear 128 and the end plate 131, and the joint ear 128 and the end plate 131 will be formed together with the rivet under the pressure of the rivet. Plastically deformed and filled in the riveting die after forming, thereby forming a stable connection between the joint ear 128 and the end plate 131 . The strength of the riveting point of this connection method is high, the two are not easy to separate, and there is no need to open holes in advance, and it can also protect the coating layer of the cooling plate 120 and the end plate 131 . In addition, no dust, sparks or scraps are generated during the riveting process.

Please refer to FIG. 2 , FIG. 5 and FIG. 6 , in some embodiments, the upper board 121 and/or the lower board 122 includes a body 129 , the joint ear 128 is connected to the edge of the body 129 , and the joint ear 128 is connected to the body 129 A recess 1281 is formed at the joint. In this way, the recess 1281 can absorb the stress generated when the upper plate 121 and/or the lower plate 122 are riveted with the end plate 131 , reducing the possibility of the cooling plate 120 being damaged due to excessive force after riveting.

Specifically, in the process of self-piercing riveting connection between the joint ear 128 and the end plate 131, a driving device is required to provide power to directly press the rivet into the joint ear 128 and the end plate 131, and the rivet is pressed into the joint ear 128. The stress may cause the cooling plate 120 to be damaged due to excessive force, so the recess 1281 provided at the junction of the joint ear 128 and the body 129 can absorb the stress and prevent the cooling plate 120 from breaking, wherein the recess 1281 is away from the end plate 131 creates a depression downwards.

Please refer to FIG. 2 and FIG. 4 , in some embodiments, the battery cell 11 is bonded on the upper plate 121 by glue 14 . In this way, the battery cell 11 can be firmly connected with the upper plate 121 and not easy to fall off, thereby ensuring the cooling effect of the cooling plate 120 on the battery cell 11 .

Specifically, the adhesive connection method is easy to operate, and the selection of high-viscosity glue 14 can make the connection between the battery core 11 and the cooling plate 120 more firm. Preferably, the glue 14 can be bonded with a thermally conductive structural adhesive. The structural bonding strength of the thermally conductive structural adhesive can replace the connection method of fasteners to reduce the mass of the power battery assembly 100 and also has an insulating effect. The surface of the upper plate 121 is smooth and flat, so as to be bonded to the battery cell 11 .

Please refer to FIG. 2 to FIG. 4 , in some embodiments, the power battery assembly 100 includes a glue-limiting frame 30 , the glue-limiting frame 30 is fixed between the battery cell 11 and the upper plate 121 , and the glue-limiting frame 30 surrounds the glue 14 . In this way, the glue limiting frame 30 can prevent the overflow of the glue 14 from affecting the performance and appearance of the battery module 10 .

Specifically, the glue limiting frame 30 may be made of acrylic material, or aluminum material. The glue limiting frame 30 and the cooling plate 120 can be fixedly connected by brazing. The boundary of the glue limiting frame 30 is the same as that of the upper plate 121. The glue limiting frame 30 is a hollow structure. In order to further increase the structural strength and load capacity of the glue limiting frame 30, a reinforcing rib 31 is arranged inside the glue limiting frame 30. The glue limiting frame 30 can be roughly in the shape of a Japanese font. The structural strength and load capacity of the rubber limiting frame 30 can be effectively increased by the ribs 31 . After the glue limiting frame 30 is fixed to the cooling plate 120 , glue 14 is placed in the hollow structure of the glue limiting frame 30 to bond the battery cell 11 to the upper plate 121 .

Please refer to FIG. 7 , a vehicle 200 provided in an embodiment of the present application. The vehicle 200 includes a vehicle body 40 and a power battery assembly 100 in any of the above-mentioned embodiments. The power battery assembly 100 is installed on the vehicle body 40 . The vehicle 200 may be a hybrid vehicle or an electric vehicle, which is not specifically limited. In this way, the power battery assembly 100 can supply power to the vehicle body 40 , and the cooling device 12 of the power battery assembly 100 can dissipate heat from the battery so as to improve the service life of the vehicle 200 . In addition, when a battery module 10 of the power battery assembly 100 fails, the battery module 10 can be directly replaced to reduce maintenance costs and improve user satisfaction.

In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial", The orientation or positional relationship indicated by "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the application and simplifying the description, rather than indicating or implying the referred device or element Must be in a particular orientation, constructed, and operate in a particular orientation, and thus should not be construed as limiting of the application.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present application, "plurality" means two or more, unless otherwise specifically defined.

In this application, terms such as "installation", "connection", "connection" and "fixation" should be interpreted in a broad sense, for example, it can be a fixed connection or a detachable connection, unless otherwise clearly specified and limited. , or integrated; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application according to specific situations.

In the present application, unless otherwise clearly specified and limited, a first feature being "on" or "under" a second feature may mean that the first and second features are in direct contact, or that the first and second features are indirect through an intermediary. touch. Moreover, "above", "above" and "above" the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "beneath" and "beneath" the first feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is less horizontally than the second feature.

In the description of this specification, descriptions with reference to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" mean that specific features described in connection with the embodiment or example , structure, material or characteristic is included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without conflicting with each other.

Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limitations on the present application, and those skilled in the art can make the above-mentioned The embodiments are subject to changes, modifications, substitutions and variations.

Claims

A power battery assembly, characterized in that the power battery assembly includes a plurality of battery modules arranged side by side, each of the battery modules includes a battery cell and a cooling device, and the cooling device includes a cooling plate, so The cooling plate includes an upper plate and a lower plate, the upper plate is covered on the lower plate, the upper plate and the lower plate jointly form a cooling flow channel, and the electric core is arranged on the upper plate.
The power battery assembly according to claim 1, wherein the cooling channel comprises a plurality of sub-channels connected in parallel.
The power battery assembly according to claim 1 or 2, wherein the lower plate includes a plurality of interconnected grooves, and the upper plate covers the grooves to form the cooling channel.
The power battery assembly according to claim 3, wherein the lower plate includes an outlet and an inlet, the number of the outlet and the inlet is at least two, and the inlet corresponds to the outlet one by one , the outlet and the inlet are spaced apart on the lower plate, and the outlet and the inlet communicate with the groove.
The power battery assembly according to claim 4, wherein the cooling device includes a first water pipe joint and a second water pipe joint arranged at intervals, and the first water pipe joint passes through the upper plate and is connected to the The inlet is connected, and the second water pipe joint is pierced through the upper plate and communicated with the outlet.
The power battery assembly according to claim 5, wherein the battery module includes an end plate and a side plate connected to the end plate, the end plate and the side plate surround the battery core, The end plate and the side plate are connected to the cooling device, and the water pipe joint is passed through the end plate.
The power battery assembly according to claim 6, wherein the upper plate and/or the lower plate are formed with joint ears, and the cooling plate is fixedly connected to the end plate through the joint ears .
The power battery assembly according to claim 7, wherein the upper plate and/or the lower plate comprise a body, the joint ear is connected to the edge of the body, and the joint ear is connected to the A depression is formed at the connecting part of the body.
The power battery assembly according to any one of claims 1-8, characterized in that, the power battery assembly includes a glue-limiting frame, and the glue-limiting frame is fixed between the battery cell and the upper plate In between, the glue-limiting frame surrounds the glue.
A vehicle, characterized in that the vehicle comprises:

body;

The power battery assembly according to any one of claims 1-9, wherein the power battery assembly is installed on the vehicle body.