Battery heat exchange device, battery module assembly and battery

Abstract

The utility model provides a battery heat exchange device, which belongs to the technical field of battery heat dissipation and is used for dissipating heat of a battery module, the battery module comprises a plurality of battery cells which are overlapped in sequence, and the battery heat exchange device comprises two liquid cooling plates which are respectively arranged on two sides of the battery module; each heat exchange plate is arranged between a pair of adjacent battery cells, the two ends of each heat exchange plate are attached to the two liquid cooling plates respectively, flow channels are formed in the heat exchange plates, refrigerant media are arranged in the flow channels and used for transmitting heat of the battery cells to the liquid cooling plates, and the liquid cooling plates can absorb the heat of the battery cells in a large area and transmit the heat to the liquid cooling plates; the heat conduction capability of the liquid cooling plate is effectively improved, the thermal safety performance of the battery is effectively improved, and the liquid cooling plate is suitable for heat dissipation of the high-power battery.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery heat dissipation, and more specifically, relates to a battery heat exchange device, a battery module assembly and a battery. Background Art

[0002] Batteries are the power source or storage medium for new energy vehicles, energy storage power stations, new energy applications, etc. High-power batteries are becoming more and more widely used, and the requirements for battery heat dissipation capabilities are also becoming higher and higher.

[0003] At present, for high-power batteries, since the battery cells generate a lot of heat during operation, the existing heat dissipation devices have insufficient heat dissipation capacity and cannot quickly cool the batteries, thereby reducing the thermal safety performance of the battery system. Utility Model Content

[0004] The purpose of the utility model is to provide a battery heat exchange device, a battery module assembly and a battery in response to the deficiencies in the existing technology, so as to solve the problem that the existing heat dissipation device proposed in the above background technology has insufficient heat dissipation capacity for high-power batteries, cannot quickly cool the batteries, and reduces the thermal safety performance of the battery system.

[0005] In order to achieve the above object, the utility model provides a battery heat exchange device for dissipating heat from a battery module, wherein the battery module comprises a plurality of battery cells stacked in sequence. The battery heat exchange device comprises:

[0006] Two liquid cooling plates, the two liquid cooling plates are respectively arranged on both sides of the battery module;

[0007] A plurality of heat exchange plates are provided, each of which is arranged between a pair of adjacent two battery cells, and both ends of the heat exchange plate are respectively attached to the two liquid cooling plates, a flow channel is provided in the heat exchange plate, a coolant medium is provided in the flow channel, and the coolant medium is used to transfer the heat of the battery cell to the liquid cooling plate.

[0008] Preferably, the cold medium is a phase change medium.

[0009] Preferably, the heat exchange plate is a copper plate.

[0010] Preferably, the heat exchange plate is an aluminum plate.

[0011] Preferably, the two liquid cooling plates are respectively attached to two ends of the battery core.

[0012] Preferably, the two liquid cooling plates are connected in series or in parallel, and are both connected to the liquid supply system.

[0013] A battery module assembly includes a battery heat exchange device.

[0014] Preferably, the battery module assembly further comprises two end plates, and the two end plates are respectively arranged at the two ends of the battery module.

[0015] Preferably, the battery module assembly further comprises two insulating plates, and an insulating plate is arranged between the end plate at each end and the battery module.

[0016] A battery includes a battery module assembly.

[0017] The utility model provides a battery heat exchange device, a battery module assembly and a battery, and its beneficial effects are: the battery heat exchange device is provided with a heat exchange plate between every two adjacent battery cells of the battery module, and the two ends of the heat exchange plate are respectively attached to two liquid cooling plates, a flow channel is provided in the heat exchange plate, and a coolant medium is provided in the flow channel. The coolant medium can absorb the heat of the battery cells over a large area and transfer it to the liquid cooling plate, thereby effectively improving the thermal conductivity of the liquid cooling plate and effectively improving the thermal safety performance of the battery.

[0018] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present invention.

[0020] Figure 1 A three-dimensional structural diagram of a battery heat exchange device, a battery module assembly and a battery according to an embodiment of the utility model is shown;

[0021] Figure 2 An exploded structural diagram of a battery heat exchange device, a battery module assembly and a battery according to an embodiment of the utility model is shown.

[0022] Description of reference numerals:

[0023] 1. Battery cell; 2. Liquid cooling plate; 3. Heat exchange plate; 4. End plate; 5. Insulation plate. DETAILED DESCRIPTION

[0024] The preferred embodiments of the present invention will be described in more detail below. Although the preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0025] like Figure 1 and Figure 2 As shown, the utility model provides a battery heat exchange device for dissipating heat from a battery module, wherein the battery module comprises a plurality of battery cells 1 stacked in sequence. The battery heat exchange device comprises:

[0026] Two liquid cooling plates 2, the two liquid cooling plates 2 are respectively arranged on both sides of the battery module;

[0027] A plurality of heat exchange plates 3 are provided, each of which is arranged between a pair of adjacent battery cells 1. Both ends of the heat exchange plate 3 are respectively attached to two liquid cooling plates 2. A flow channel is provided in the heat exchange plate 3. A refrigerant medium is provided in the flow channel. The refrigerant medium is used to transfer the heat of the battery cell 1 to the liquid cooling plate 2.

[0028] Specifically, in order to solve the problem that the existing heat dissipation device has insufficient heat dissipation capacity for high-power batteries, cannot quickly cool the batteries, and reduces the thermal safety performance of the battery system, the utility model provides a battery heat exchange device, the heat exchange plate 3 of the battery heat exchange device is pressed by a heat pipe, and the heat pipe has an excellent thermal conductivity coefficient. The battery heat exchange device arranges a heat exchange plate 3 between every two adjacent battery cells 1 of the battery module, and the two ends of the heat exchange plate 3 are respectively attached to two liquid cooling plates 2. A flow channel is provided in the heat exchange plate 3, and a coolant medium is provided in the flow channel. The coolant medium can absorb the heat of the battery cells over a large area and transfer it to the liquid cooling plate 2, thereby effectively improving the thermal conductivity of the liquid cooling plate 2 and effectively improving the thermal safety performance of the battery.

[0029] Preferably, the cooling medium is a phase change medium.

[0030] Specifically, each heat exchange plate 3 is arranged between a pair of adjacent battery cells 1. The heat exchange plate 3 formed by pressing the heat pipe has excellent thermal conductivity. The phase change medium can be a gas-liquid phase change medium. The specific heat dissipation process is that when the temperature of the battery cell 1 does not rise, the phase change medium in the heat exchange plate 3 is liquid. When the heat generated by the battery cell 1 is relatively large, the phase change medium will absorb the heat and convert it into a gaseous state. At this time, the phase change medium in the gaseous state will flow along the flow channel and be able to approach the two liquid cooling plates 2. The liquid cooling medium in the liquid cooling plate 2 will exchange heat with the phase change medium in the gaseous state, and the phase change medium in the gaseous state will be converted into a liquid state. Then, the phase change of the phase change medium in the heat exchange plate 3 can quickly transfer the heat to the liquid cooling plate 2 to achieve heat dissipation of the battery module.

[0031] Preferably, the heat exchange plate 3 is a copper plate or an aluminum plate.

[0032] Specifically, the heat exchange plate 3 is made of copper or aluminum, has good ductility, and can effectively absorb the swelling and deformation that occurs during the use of the battery.

[0033] Preferably, the two liquid cooling plates 2 are respectively attached to two ends of the battery cell 1 .

[0034] Specifically, a heat exchange plate 3 is arranged between every two adjacent battery cells 1 of the battery module. The heat exchange plate 3 can absorb the heat of the battery cells 1 over a large area and transfer it to the liquid cooling plate 2. At the same time, the ends of the battery cells 1 are also in contact with the liquid cooling plate 2 for heat dissipation, which effectively improves the thermal safety performance of the battery.

[0035] Preferably, the two liquid cooling plates 2 are connected in series or in parallel, and are both connected to the liquid supply system.

[0036] A battery module assembly includes a battery heat exchange device.

[0037] Preferably, the battery module assembly further includes two end plates 4, which are respectively arranged at two ends of the battery module.

[0038] Preferably, the battery module assembly further includes two insulating plates 5, with one insulating plate 5 being disposed between the end plate 4 at each end and the battery module.

[0039] A battery includes a battery module assembly.

[0040] In summary, when the battery heat exchange device provided by the utility model is applied to a battery module, a heat exchange plate 3 is arranged between every two adjacent battery cells 1 of the battery module, and the two ends of the heat exchange plate 3 are respectively attached to the two liquid cooling plates 1, and the two ends of the battery cell 1 are also respectively attached to the two liquid cooling plates 2. The heat exchange plate 3 formed by pressing the heat pipe has an excellent thermal conductivity coefficient, and the phase change of the phase change medium in the heat exchange plate 3 can quickly transfer heat to the liquid cooling plate 2, thereby effectively improving the thermal conductivity of the liquid cooling plate 2, and effectively improving the thermal safety performance of the battery, which is suitable for heat dissipation of high-power batteries.

[0041] The various embodiments of the utility model have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A battery heat exchange device, used for dissipating heat from a battery module, wherein the battery module comprises a plurality of battery cells stacked in sequence, characterized in that: The battery heat exchange device comprises: Two liquid cooling plates, the two liquid cooling plates are respectively arranged on both sides of the battery module; A plurality of heat exchange plates are provided, each of which is arranged between a pair of adjacent two battery cells, and both ends of the heat exchange plate are respectively attached to the two liquid cooling plates, a flow channel is provided in the heat exchange plate, a coolant medium is provided in the flow channel, and the coolant medium is used to transfer the heat of the battery cell to the liquid cooling plate.

2. A battery heat exchange device according to claim 1, characterized in that: The cold medium is a phase change medium.

3. A battery heat exchange device according to claim 1, characterized in that: The heat exchange plate is a copper plate.

4. A battery heat exchange device according to claim 1, characterized in that: The heat exchange plate is an aluminum plate.

5. The battery heat exchange device according to claim 1, characterized in that: The two liquid cooling plates are respectively attached to the two ends of the battery core.

6. A battery heat exchange device according to claim 1, characterized in that: The two liquid cooling plates are connected in series or in parallel, and are both connected to the liquid supply system.

7. A battery module assembly, characterized in that: It comprises a battery heat exchange device according to any one of claims 1-6.

8. A battery module assembly according to claim 7, characterized in that: The battery module assembly also includes two end plates, and the two end plates are respectively arranged at the two ends of the battery module.

9. A battery module assembly according to claim 8, characterized in that: The battery module assembly also includes two insulating plates, with an insulating plate disposed between the end plate at each end and the battery module.

10. A battery, characterized in that: Comprising a battery module assembly according to any one of claims 1-9.

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