Liquid cooling plate and battery pack

Abstract

The utility model discloses a liquid cooling plate and battery pack, including processor, a plurality of electrical core and be located the liquid cooling plate of each electrical core bottom, liquid cooling plate includes a plurality of flow zone, each flow zone is equipped with the liquid inlet branch pipe that communicates with the flow zone liquid inlet and the liquid outlet branch pipe that communicates with the flow zone liquid outlet, each valve is located on the liquid inlet branch pipe, and the valve is located on the liquid outlet branch pipe. The number of the temperature monitoring assemblies is the same as that of the flow areas, each temperature monitoring assembly is located at the top of the liquid cooling plate and corresponds to one flow area, and each temperature monitoring assembly detects the temperature outside one battery cell corresponding to the flow area and transmits the temperature to the processor; and the processor controls the flow of the valve corresponding to the flow area according to the temperature so as to adjust the cell temperature corresponding to the flow area. The battery cell temperature of each flow area is monitored through the temperature monitoring assembly, and when the battery cell temperature of a certain flow area is relatively high, the opening degree of the valve is increased through the processor, so that the temperature distribution of the battery cells is uniform and consistent, and damage caused by over-high temperature of individual battery cells is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of battery liquid cooling plates, in particular to a liquid cooling plate and a battery pack. Background Art

[0002] During the battery charging and discharging process, heat is generated, causing the battery cell temperature to rise, and a liquid cooling plate is needed to cool the battery. The current liquid cooling plate is provided with a liquid inlet and a liquid outlet. After the coolant enters the liquid cooling plate from the liquid inlet, it is freely distributed through the internally designed flow channel, and then converges to the liquid outlet to flow out. Due to the lack of effective flow control means for the coolant, the flow rate of the coolant in the liquid cooling plate mainly depends on the resistance of the flow channel, and the flow rate cannot be controlled according to the temperature of the battery cell, resulting in excessive temperature of individual battery cells causing damage, which in turn affects the overall operation of the battery pack. Utility Model Content

[0003] In order to overcome the deficiencies of the prior art, the purpose of the utility model is to realize a liquid cooling plate and a battery pack which can automatically adjust the flow rate of the coolant according to the temperature of the battery core.

[0004] The purpose of the utility model is achieved by the following technical solutions:

[0005] A battery pack comprises a processor, a plurality of battery cells and a liquid cooling plate located at the bottom of each of the battery cells, the liquid cooling plate comprising a plurality of flow zones, each of the flow zones being provided with a liquid inlet branch pipe connected to a liquid inlet of the flow zone and a liquid outlet branch pipe connected to a liquid outlet of the flow zone, the liquid cooling plate further comprising a plurality of temperature monitoring components and a plurality of valves, each of the valves being located on a liquid inlet branch pipe, the number of the temperature monitoring components being the same as the number of the flow zones, each of the temperature monitoring components being communicatively connected to the processor, each of the temperature monitoring components being located at the top of the liquid cooling plate and corresponding to a flow zone, each of the temperature monitoring components detecting the temperatures outside the plurality of battery cells corresponding to the flow zone and transmitting the temperatures to the processor, the processor controlling the flow of the valve corresponding to the flow zone according to the temperatures to adjust the temperature of the battery cells corresponding to the flow zone.

[0006] Preferably, the number of the flow zones is four.

[0007] Preferably, the flow area is provided with an upper baffle, a lower baffle and a plurality of guide bars, the guide bars are arranged in parallel inside the flow area, and the guide bars are sequentially connected to the lower baffle and the upper baffle at intervals.

[0008] Preferably, the liquid inlet branch pipe is located at one side of the flow area, and the liquid cooling plate further comprises a liquid inlet through pipe, and each of the liquid inlet branch pipes is respectively connected to the liquid inlet through pipe.

[0009] Preferably, the liquid inlet branches are arranged in parallel.

[0010] Preferably, the liquid inlet branch pipe is distributed in parallel with the liquid outlet branch pipe.

[0011] Preferably, the liquid outlet branch pipe is located at the other side of the flow area, and the liquid cooling plate further comprises a liquid outlet through pipe, and each of the liquid outlet branch pipes is respectively connected to the liquid outlet through pipe.

[0012] Preferably, the liquid outlet pipe is distributed in parallel with the liquid inlet pipe.

[0013] Preferably, the valve is an electronic expansion valve.

[0014] A liquid cooling plate, the liquid cooling plate includes multiple flow zones, each of the flow zones is provided with a liquid inlet branch pipe connected to the liquid inlet of the flow zone and a liquid outlet branch pipe connected to the liquid outlet of the flow zone, the liquid cooling plate also includes multiple temperature monitoring components and multiple valves, each of the valves is located on the liquid inlet branch pipe, the number of each temperature monitoring component corresponds to the number of the valves, each of the temperature monitoring components is communicatively connected to a processor, and the flow control of the valve is realized by the processor.

[0015] Compared with the existing technology, the liquid cooling plate and battery pack of the utility model have the following advantages:

[0016] The liquid cooling plate and battery pack of the present application monitor the temperature of the battery cells in each flow zone through a temperature monitoring component. When the temperature of the battery cells in a certain flow zone is high, the valve opening is increased by the processor, and the temperature distribution of the battery cells is uniform and consistent through reasonable adjustment of the valves at the liquid inlet of each flow zone, and the temperature range is within a reasonable range of 25 to 30°C. Consistent battery cell temperature can avoid damage caused by excessive temperature of individual battery cells, thereby affecting the overall operation of the battery pack. In addition, through the reasonable distribution of flow between each flow zone, excessive cooling of individual battery cells can also be avoided, which brings unnecessary energy waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the liquid cooling plate of this application;

[0018] Figure 2 for Figure 1 Schematic diagram of the flow channel in the flow area.

[0019] In the figure: 100, liquid cooling plate; 101, flow zone; 1011, guide strip; 1012, upper baffle; 1013, lower baffle; 102, liquid inlet branch pipe; 103, liquid inlet passage; 104, liquid outlet branch pipe; 105, liquid outlet passage; 106, valve. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may be another intermediate component through which it is fixed. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be another intermediate component at the same time. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be another intermediate component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0023] Figure 1 , Figure 2 It is a liquid cooling plate of the utility model. The liquid cooling plate 100 includes multiple flow zones 101. Each flow zone 101 is provided with a liquid inlet branch 102 connected to the liquid inlet of the flow zone 101 and a liquid outlet branch 104 connected to the liquid outlet of the flow zone 101. The liquid cooling plate 100 also includes a temperature monitoring component (not shown in the figure) and multiple valves 106. Each valve 106 is located on the liquid inlet branch 102. Each temperature monitoring component is located at the top of the liquid cooling plate 100 and corresponds to a flow zone 101. Each temperature monitoring component detects the temperature of the outside of multiple battery cells corresponding to the flow zone 101 and transmits the temperature to the processor. The processor controls the flow rate of the valve 106 corresponding to the flow zone 101 according to the temperature to adjust the temperature of the battery cell corresponding to the flow zone 101.

[0024] Specifically, the number of flow zones 101 is four.

[0025] The flow area 101 is provided with an upper baffle 1012, a lower baffle 1013 and a plurality of guide bars 1011, which are arranged in parallel inside the flow area 101, and the guide bars 1011 are sequentially connected with the lower baffle 1013 and the upper baffle 1012 at intervals. A flow channel is formed between the upper baffle 1012, the lower baffle 1013 and the plurality of guide bars 1011, and the flow channel is a folded series structure, and the two ends of the flow channel are respectively connected with the liquid inlet of the flow area 101 and the liquid outlet of the flow area 101.

[0026] Specifically, the number of temperature control components corresponds to the number of flow zones 101 and valves 106 one by one.

[0027] The liquid inlet branch pipe 102 is located at one side of the flow area 101 , and each liquid inlet branch pipe 102 is communicated with a liquid inlet through pipe 103 .

[0028] Specifically, the number of the liquid inlet branch pipes 102 is four.

[0029] Specifically, the liquid inlet branches 102 are arranged in parallel.

[0030] Specifically, the liquid inlet branch pipe 102 and the liquid outlet branch pipe 104 are arranged in parallel.

[0031] Specifically, the valve 106 is located on the liquid inlet branch pipe 102 .

[0032] Specifically, the liquid outlet branch pipe 104 is located at the other side of the flow area 101 , and each liquid outlet branch pipe 104 is communicated with the liquid outlet through pipe 105 .

[0033] Specifically, each liquid outlet branch pipe 104 is connected to each flow area 101 .

[0034] Specifically, the valve 106 is an electronic expansion valve.

[0035] The present application also includes a battery pack (not shown in the figure), the battery pack includes a processor and a liquid cooling plate 100, the liquid cooling plate 100 is provided with a plurality of flow zones 101, each flow zone 101 is provided with a liquid inlet branch 102 connected to the liquid inlet of the flow zone 101 and a liquid outlet branch 104 connected to the liquid outlet of the flow zone 101, the liquid cooling plate 100 also includes a temperature monitoring component and a plurality of valves 106, each valve 106 is located on the liquid inlet branch 102, and the temperature monitoring component realizes the opening and closing of the valve 106 through the processor.

[0036] The battery pack further includes a battery cell (not shown in the figure), and the liquid cooling plate 100 is located at the bottom of the battery cell. In other embodiments, the liquid cooling plate 100 is located at the top of the battery cell.

[0037] When the liquid cooling plate and battery pack in the present application are in use, the liquid cooling plate 100 is divided into a plurality of flow zones 101. After the coolant enters from the liquid inlet pipe 103, it is diverted to each liquid inlet branch pipe 102. A valve 106 is provided on the liquid inlet branch pipe 102 of each flow zone 101 to control the flow of the coolant entering each flow zone 101. The coolant moves in an S shape in the flow zone 101 under the guidance of the guide bar 1011, and finally flows out through the liquid outlet branch pipe 104. The temperature of the battery cells in each flow zone 101 is monitored by the temperature monitoring component. When the temperature of the battery cells in a certain flow zone 101 is high, the opening of the valve 106 is increased by the processor. At this time, the flow of the coolant in the flow zone 101 increases, which can enhance the cooling effect of the flow zone 101 and reduce the temperature of the battery cells. The liquid cooling plate and battery pack of the present application monitor the temperature of the battery cells in each flow zone 101 through a temperature monitoring component. When the temperature of the battery cells in a certain flow zone 101 is high, the processor increases the opening of the valve 106, and the reasonable adjustment of the valve 106 at the liquid inlet of each flow zone 101 makes the temperature distribution of the battery cells uniform and consistent, and the temperature range is within a reasonable range of 25 to 30°C. Consistent battery cell temperature can avoid damage caused by excessive temperature of individual battery cells, thereby affecting the overall operation of the battery pack. In addition, through the reasonable distribution of flow between the flow zones 101, excessive cooling of individual battery cells can also be avoided, which brings unnecessary energy waste.

[0038] The above embodiments only express several implementation methods of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, without departing from the concept of the utility model, several modifications and improvements can be made, which are equivalent modifications and improvements made to the above embodiments based on the essential technology of the utility model, and all of them belong to the protection scope of the utility model.

Claims

1. A battery pack, comprising a processor, a plurality of battery cells and a liquid cooling plate located at the bottom of each of the battery cells, wherein the liquid cooling plate comprises a plurality of flow zones, each of the flow zones is provided with a liquid inlet branch pipe connected to a liquid inlet of the flow zone and a liquid outlet branch pipe connected to a liquid outlet of the flow zone, characterized in that: The liquid cooling plate also includes multiple temperature monitoring components and multiple valves, each of the valves is located on one of the liquid inlet branches, the number of the temperature monitoring components is the same as the number of the flow zones, each of the temperature monitoring components is communicatively connected to the processor, each of the temperature monitoring components is located on the top of the liquid cooling plate and corresponds to one of the flow zones, each of the temperature monitoring components detects the temperatures outside the multiple battery cells corresponding to the flow zone and transmits the temperatures to the processor, and the processor controls the flow rate of the valve corresponding to the flow zone according to the temperature to adjust the temperature of the battery cells corresponding to the flow zone.

2. The battery pack according to claim 1, characterized in that: The number of the flow zones is four.

3. The battery pack according to claim 1, characterized in that: The flow area is provided with an upper baffle, a lower baffle and a plurality of guide bars, the guide bars are arranged in parallel inside the flow area, and the guide bars are sequentially connected with the lower baffle and the upper baffle at intervals.

4. The battery pack according to claim 1, characterized in that: The liquid inlet branch pipe is located at one side of the flow area, and the liquid cooling plate also includes a liquid inlet through pipe, and each of the liquid inlet branch pipes is respectively connected to the liquid inlet through pipe.

5. The battery pack according to claim 4, characterized in that: The liquid inlet branches are arranged in parallel.

6. The battery pack according to claim 1, characterized in that: The liquid inlet branch pipe is distributed in parallel with the liquid outlet branch pipe.

7. The battery pack according to claim 4, characterized in that: The liquid outlet branch pipe is located at the other side of the flow area, and the liquid cooling plate further comprises a liquid outlet through pipe, and each of the liquid outlet branch pipes is respectively connected to the liquid outlet through pipe.

8. The battery pack according to claim 7, characterized in that: The liquid outlet pipe is distributed in parallel with the liquid inlet pipe.

9. The battery pack according to claim 1, characterized in that: The valve is an electronic expansion valve.

10. A liquid cooling plate, characterized in that: The liquid cooling plate includes a plurality of flow zones, each of which is provided with a liquid inlet branch pipe connected to a liquid inlet of the flow zone and a liquid outlet branch pipe connected to a liquid outlet of the flow zone. The liquid cooling plate also includes a plurality of temperature monitoring components and a plurality of valves, each of which is located on the liquid inlet branch pipe. The number of each of the temperature monitoring components corresponds to the number of the valves one by one, and each of the temperature monitoring components is communicatively connected to a processor, and flow control of the valve is realized by the processor.

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