Electrochemical energy storage box and vehicle

Abstract

The utility model relates to the technical field of electrochemical energy storage, in particular to an electrochemical energy storage box and a vehicle. The utility model provides an electrochemical energy storage box. The electrochemical energy storage box comprises an air conditioner, an air duct assembly and a plurality of battery clusters, the air conditioner has a first air outlet; the air duct assembly comprises a main air duct and a plurality of branch air ducts, the main air duct communicates with the first air outlet, the branch air ducts are arranged at intervals and communicate with the main air duct, and a plurality of second air outlets are formed in the side face of each branch air duct in the vertical direction at intervals; each battery cluster is arranged corresponding to at least one branch air duct; wherein each battery cluster comprises a mounting frame and a plurality of lithium battery packs, the mounting frame is provided with a plurality of mounting cavities, at least one lithium battery pack is mounted in each mounting cavity, and each mounting cavity is at least communicated with one second air outlet. According to the electrochemical energy storage box and the vehicle provided by the invention, the technical problem that the service life, the efficiency and the safety of the whole battery cluster are influenced due to non-uniform temperature of each lithium battery in the prior art is solved to a certain extent.

Description

Technical Field

[0001] The utility model relates to the technical field of electrochemical energy storage, in particular to an electrochemical energy storage box and a vehicle. Background Art

[0002] Electrochemical energy storage boxes generally use lithium batteries as energy storage equipment. Lithium batteries release a lot of heat during operation. In order to ensure high energy storage efficiency and safety of lithium batteries, the temperature inside the box needs to be kept constant. The method of using air conditioning and air ducts to cool lithium batteries is called air cooling.

[0003] In the prior art, the air outlet of the air duct is located at the top of the battery cluster. Cold air blows downward from the top, which can easily cause the temperature of the lithium batteries near the air outlet to be low. The lithium batteries at the bottom are not easy to drop in temperature because they are far away from the air outlet. This may cause the temperature of the lithium batteries near the top to be low and the temperature of the lithium batteries near the bottom to be high, resulting in uneven temperatures of the lithium batteries, affecting the life, efficiency and safety of the entire battery cluster. Utility Model Content

[0004] The present application provides an electrochemical energy storage box and a vehicle, which to a certain extent solve the technical problem in the prior art that the temperature of each lithium battery is uneven, affecting the life, efficiency and safety of the entire battery cluster.

[0005] In a first aspect, an embodiment of the present application provides an electrochemical energy storage box, comprising

[0006] An air conditioner having a first air outlet;

[0007] An air duct assembly, comprising a main air duct and a plurality of branch air ducts, wherein the main air duct is connected to the first air outlet, a plurality of branch air ducts are arranged at intervals and connected to the main air duct, and a plurality of second air outlets are arranged at intervals on the side surface of each branch air duct along the vertical direction;

[0008] A plurality of battery clusters, each of which is arranged corresponding to at least one of the branch air ducts;

[0009] Each of the battery clusters includes a mounting frame and a plurality of lithium battery packs, the mounting frame has a plurality of mounting cavities, each of the mounting cavities is equipped with at least one lithium battery pack, and each of the mounting cavities is connected to at least one of the second air outlets.

[0010] In some embodiments, there are two air duct components, and the two air duct components are respectively arranged on both sides of the air conditioner.

[0011] In some embodiments, in the two air duct assemblies, the two main air ducts are arranged side by side and horizontally.

[0012] In some embodiments, the first air outlet is disposed at the top of the air conditioner, the main air duct is disposed at the top of the air conditioner, and a plurality of branch air ducts are located below the main air duct.

[0013] In some embodiments, a plurality of the branch air ducts are disposed on the side of the main air duct.

[0014] In some embodiments, a plurality of branch air ducts are arranged at equal intervals, and a plurality of second air outlets are arranged at equal intervals on the sides of the branch air ducts.

[0015] In some embodiments, the main air duct includes a connected main straight line segment and a first curved transition segment, wherein the first curved transition segment is connected to the first air outlet; the branch air duct includes a connected branch straight line segment and a second curved transition segment, wherein the second curved transition segment is connected to the main air duct.

[0016] In some embodiments, the electrochemical energy storage box further includes thermal insulation and sound insulation cotton, and the thermal insulation and sound insulation cotton is arranged on the inner walls of the main air duct and the branch air duct.

[0017] In some embodiments, the electrochemical energy storage box further includes a box body, and the air conditioner, the air duct assembly and the battery cluster are disposed in the box body.

[0018] In a second aspect, an embodiment of the present application provides a vehicle comprising the electrochemical energy storage box described above.

[0019] The beneficial effects of this application are as follows:

[0020] The present application provides an electrochemical energy storage box and a vehicle, in which the cold air generated by the air conditioner enters the main air duct through the first air outlet, and then enters the various branch air ducts through the main air duct. Since each battery cluster is arranged corresponding to at least one branch air duct, a plurality of second air outlets are arranged at intervals along the vertical direction on the side of each branch air duct, at least one lithium battery pack is installed in each installation cavity, and each installation cavity is connected to at least one second air outlet, so that each lithium battery pack is arranged corresponding to at least one second air outlet, that is, lithium battery packs located at different heights can be cooled by the cold air blown out by at least one second air outlet, thereby improving the temperature uniformity of the plurality of lithium battery packs and ensuring the life, efficiency and safety of the entire battery cluster. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model.

[0022] Figure 1 A schematic diagram of the structure of the electrochemical energy storage box provided in an embodiment of the present application.

[0023] Figure 2 for Figure 1 Schematic diagram of the internal local structure.

[0024] Figure 3 for Figure 2 Schematic diagram of the structure of the middle air duct assembly.

[0025] Description of reference numerals:

[0026] 1-electrochemical energy storage box, 100-air conditioner, 110-first air outlet, 200-air duct assembly, 210-main air duct, 211-main straight section, 212-first arc-shaped transition section, 220-branch air duct, 221-branch straight section, 222-second arc-shaped transition section, 223-second air outlet, 300-battery cluster, 310-mounting frame, 311-mounting cavity, 400-box. DETAILED DESCRIPTION

[0027] 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 of 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.

[0028] It should be noted that all directional indications in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0029] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In addition, in the present utility model, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0031] The present application provides an electrochemical energy storage box, which solves the technical problem in the prior art that the temperature of each lithium battery is uneven, affecting the life, efficiency and safety of the entire battery cluster. Figure 1-Figure 3 The electrochemical energy storage box 1 includes an air conditioner 100 , an air duct assembly 200 and a plurality of battery clusters 300 .

[0032] The air conditioner 100 is used to generate cold air. The air conditioner 100 has a first air outlet 110, and the cold air can be blown out from the first air outlet 110. The air duct assembly 200 includes a main air duct 210 and a plurality of branch air ducts 220. The main air duct 210 is connected to the first air outlet 110, and the plurality of branch air ducts 220 are arranged at intervals and connected to the main air duct 210, that is, the cold air can enter the main air duct 210 from the first air outlet 110, and then enter each branch air duct 220 from the main air duct 210. A plurality of second air outlets 223 are arranged at intervals along the vertical direction on the side of each branch air duct 220, that is, the cold air in the branch air duct 220 can be blown out from each second air outlet 223.

[0033] Each battery cluster 300 is arranged corresponding to at least one branch air duct 220. Each battery cluster 300 includes a mounting frame 310 and a plurality of lithium battery packs. The mounting frame 310 has a plurality of mounting cavities 311. Each mounting cavity 311 is installed with at least one lithium battery pack. Each mounting cavity 311 is connected with at least one second air outlet 223, that is, each lithium battery pack is arranged corresponding to at least one second air outlet 223. In other words, each lithium battery pack is cooled by cold air blown out by at least one second air outlet 223, thereby improving the temperature uniformity of the lithium battery pack and ensuring the life, efficiency and safety of the entire battery cluster 300.

[0034] In some embodiments, the material of the air duct assembly 200 is preferably an aluminum alloy plate with a thickness less than or equal to 2 mm or a galvanized plate with a thickness less than or equal to 2 mm.

[0035] In some embodiments, in order to simplify the overall structure of the electrochemical energy storage box 1, each battery cluster 300 can be arranged in a one-to-one correspondence with the branch air duct 220, each installation cavity 311 can only install one lithium battery pack, and each installation cavity 311 is connected to a second air outlet 223, so that each lithium battery pack corresponds to a second air outlet 223 to achieve cooling.

[0036] Of course, in other embodiments, each battery cluster 300 may also be arranged corresponding to two or more branch air ducts 220, each installation cavity 311 may also install two or more lithium battery packs, and each installation cavity 311 is connected to two or more second air outlets 223, so that each lithium battery pack corresponds to two or more second air outlets 223, and there is no limitation on this.

[0037] In some embodiments, the length of the air duct assembly 200 is determined by the number of battery clusters 300. Since there are a large number of battery clusters 300, the air duct assembly 200 has a certain length, and it takes a certain time for the air conditioner 100 to deliver air to a specific location through the air duct assembly 200. The farther away from the air conditioner 100, the longer the air delivery time. As a result, in the same time period, the battery cluster 300 farther away from the air conditioner 100 will have a poor cooling effect, thereby causing a large temperature difference between each battery cluster 300, affecting the temperature uniformity of the battery cluster 300. In order to improve this situation to a certain extent, in the prior art, air conditioners 100 are provided at both ends of the air duct assembly 200 to avoid the situation where one end of the air duct assembly 200 has an excellent cooling effect and the other end has an extremely poor cooling effect. However, since the air conditioner 100 is relatively expensive, two air conditioners 100 are provided for one air duct assembly 200, which will make the overall cost of the electrochemical energy storage box 1 relatively high.

[0038] Therefore, in order to reduce the number of air conditioners 100, the embodiment of the present application has two air duct assemblies 200, and the two air duct assemblies 200 are arranged on both sides of the air conditioner 100, which is equivalent to separating the air duct assembly 200 in the prior art through the air conditioner 100, and dividing it into two to form two air duct assemblies 200 with shorter lengths, that is, when the overall length formed by the two air duct assemblies 200 remains unchanged, the air conditioner 100 is located in the middle of the two air duct assemblies 200, and cold air can be delivered to the air duct assemblies 200 on both sides at the same time. Since the length of the air duct assembly 200 after being divided into two is shorter, the difference in cooling effect between the two ends is reduced, so that the number of air conditioners 100 is reduced in extreme cases where a huge temperature difference between the battery cluster 300 at one end and the other end of the air duct assembly 200 can be avoided, and the overall cost of the electrochemical energy storage box 1 is greatly saved.

[0039] In some embodiments, in order to make the overall structure formed by the air conditioner 100 and the air duct assembly 200 more regular and occupy less space for easy installation, the two main air ducts 210 in the two air duct assemblies 200 are arranged side by side and horizontally.

[0040] That is, the two main air ducts 210 and the air conditioner 100 together form a horizontal straight structure, so that the overall structure formed by the air conditioner 100 and the air duct assembly 200 occupies a smaller space, and the branch air duct 220 can be arranged perpendicular to the main air duct 210, that is, the branch air duct 220 is arranged vertically, further improving the regularity of the overall structure formed by the air conditioner 100 and the air duct assembly 200, so as to facilitate cooperation with the battery cluster 300.

[0041] In some embodiments, in order to facilitate the installation of the air duct assembly 200, the first air outlet 110 is arranged at the top of the air conditioner 100, the main air duct 210 is arranged at the top of the air conditioner 100, and multiple branch air ducts 220 are located below the main air duct 210, that is, the cold air is transported from top to bottom in the branch air duct 220.

[0042] Of course, the end of the main air duct 210 away from the first air outlet 110 and the bottom of each branch air duct 220 need to be sealed to prevent air leakage, thereby ensuring that each second air outlet 223 has sufficient wind speed to blow cold air to the corresponding lithium battery pack, so that each lithium battery pack is evenly cooled.

[0043] In some embodiments, in order to leave installation space for the battery cluster 300 and reduce the space occupied by the overall structure formed by the air conditioner 100, the air duct assembly 200 and the battery cluster 300, a plurality of branch air ducts 220 are arranged on the side of the main air duct 210. That is, an installation space is formed between the plurality of branch air ducts 220 and the main air duct 210, and the battery cluster 300 can be placed in the installation space, so that the battery cluster 300 and the air duct assembly 200 are more closely matched, and the space occupied by the overall structure formed by the air conditioner 100, the air duct assembly 200 and the battery cluster 300 is also reduced.

[0044] In some embodiments, since the arrangement of each mounting frame 310 is relatively regular and the layer heights of each mounting cavity 311 in each mounting frame 310 are also the same, in order to make the battery cluster 300 and the branch air duct 220 accurately correspond, the second air outlet 223 and the mounting cavity 311 can accurately correspond, so that the cold air blown out of the second air outlet 223 can be accurately blown onto the lithium battery pack, multiple branch air ducts 220 are arranged at equal intervals, and multiple second air outlets 223 are arranged at equal intervals on the side of the branch air duct 220.

[0045] In some embodiments, the main air duct 210 includes a connected main straight line segment 211 and a first curved transition segment 212, and the first curved transition segment 212 is connected to the first air outlet 110; the branch air duct 220 includes a connected branch straight line segment 221 and a second curved transition segment 222, and the second curved transition segment 222 is connected to the main air duct 210.

[0046] The main straight section 211 and the branch straight section 221 are the main air supply parts, and the first arc transition section 212 and the second arc transition section 222 are the connecting parts, that is, the arc transition between the main air duct 210 and the first air outlet 110, and the arc transition between the branch air duct 220 and the main air duct 210. In other words, the overall structure of the air duct assembly 200 is composed of a straight line structure and an arc structure, without corners, so that the resistance is small and will not have a significant impact on the wind speed, so as to ensure the cooling effect.

[0047] In some embodiments, the electrochemical energy storage box 1 further includes heat-insulating and sound-proofing cotton, which is disposed on the inner walls of the main air duct 210 and the branch air duct 220. The heat-insulating and sound-proofing cotton can not only insulate heat and sound, but also prevent condensation water, thereby preventing the occurrence of water ingress and short circuit of the lithium battery. Specifically, the heat-insulating and sound-proofing cotton can be pasted to the inner walls of the main air duct 210 and the branch air duct 220.

[0048] In some embodiments, the electrochemical energy storage box 1 further includes a box body 400, and the air conditioner 100, the air duct assembly 200 and the battery cluster 300 are disposed in the box body 400. The box body 400 is the basic structure of the electrochemical energy storage box 1, and can provide an installation foundation and protection for the air conditioner 100, the air duct assembly 200 and the battery cluster 300.

[0049] The air conditioner 100 , the air duct assembly 200 and the plurality of battery clusters 300 may together form a battery device. Each box 400 may be provided with two battery devices, and the two battery devices are arranged opposite to each other.

[0050] In an electrochemical energy storage box 1 provided in the present application, the cold air generated by the air conditioner 100 enters the main air duct 210 through the first air outlet 110, and then enters each branch air duct 220 through the main air duct 210. Since each battery cluster 300 is arranged corresponding to at least one branch air duct 220, a plurality of second air outlets 223 are arranged at intervals along the vertical direction on the side of each branch air duct 220, and each installation cavity 311 is installed with at least one lithium battery pack, and each installation cavity 311 is connected with at least one second air outlet 223, so that each lithium battery pack is arranged corresponding to at least one second air outlet 223, that is, lithium battery packs at different heights can also be cooled by the cold air blown out by at least one second air outlet 223, thereby improving the temperature uniformity of the plurality of lithium battery packs and ensuring the life, efficiency and safety of the entire battery cluster 300.

[0051] Based on the same utility model concept, the embodiment of the present application also provides a vehicle, including the above-mentioned electrochemical energy storage box 1. The beneficial effects of the vehicle are the same as those of the electrochemical energy storage box 1, which will not be repeated here.

[0052] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present invention.

[0053] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. An electrochemical energy storage box, characterized in that: include An air conditioner having a first air outlet; An air duct assembly, comprising a main air duct and a plurality of branch air ducts, wherein the main air duct is connected to the first air outlet, a plurality of branch air ducts are arranged at intervals and connected to the main air duct, and a plurality of second air outlets are arranged at intervals on the side surface of each branch air duct along the vertical direction; A plurality of battery clusters, each of which is arranged corresponding to at least one of the branch air ducts; Each of the battery clusters includes a mounting frame and a plurality of lithium battery packs, the mounting frame has a plurality of mounting cavities, each of the mounting cavities is equipped with at least one lithium battery pack, and each of the mounting cavities is connected to at least one of the second air outlets.

2. The electrochemical energy storage box according to claim 1, characterized in that: There are two air duct components, and the two air duct components are respectively arranged on both sides of the air conditioner.

3. The electrochemical energy storage box according to claim 2, characterized in that: In the two air duct assemblies, the two main air ducts are arranged side by side and horizontally.

4. The electrochemical energy storage box according to claim 1, characterized in that: The first air outlet is arranged at the top of the air conditioner, the main air duct is arranged at the top of the air conditioner, and a plurality of branch air ducts are located below the main air duct.

5. The electrochemical energy storage box according to claim 1, characterized in that: The plurality of branch air ducts are arranged on the side of the main air duct.

6. The electrochemical energy storage box according to claim 1, characterized in that: The plurality of branch air ducts are arranged at equal intervals, and the plurality of second air outlets are arranged at equal intervals on the side surfaces of the branch air ducts.

7. The electrochemical energy storage box according to claim 1, characterized in that: The main air duct includes a connected main straight section and a first arc-shaped transition section, wherein the first arc-shaped transition section is connected to the first air outlet; the branch air duct includes a connected branch straight section and a second arc-shaped transition section, wherein the second arc-shaped transition section is connected to the main air duct.

8. The electrochemical energy storage box according to claim 1, characterized in that: The electrochemical energy storage box also includes thermal insulation and sound insulation cotton, which is arranged on the inner walls of the main air duct and the branch air duct.

9. The electrochemical energy storage box according to claim 1, characterized in that: The electrochemical energy storage box also includes a box body, and the air conditioner, the air duct assembly and the battery cluster are arranged in the box body.

10. A vehicle, characterized in that: Comprising the electrochemical energy storage box as described in any one of claims 1-9.

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