Battery system heat dissipation device with self-adaptive precise regulation and control function

Abstract

A battery system heat dissipation device with a self-adaptive precise regulation and control function comprises a plurality of heat dissipation modules, each heat dissipation module comprises a plurality of heat dissipation plates, a connecting mechanism and a water conveying plate, and the heat dissipation plates are arranged on the side walls of a plurality of battery blocks respectively; a water inlet pipe, a plurality of water outlet pipes and a plurality of heat dissipation flow channels are mounted at the bottom of each heat dissipation plate; a plurality of self-adaptive heat dissipation units are mounted on the heat dissipation plate so as to realize self-adaptive adjustment of the flow of a plurality of heat dissipation flow channels; the connecting mechanism is used for connecting the plurality of heat dissipation plates and fixing the battery block; the water conveying plate is provided with a plurality of water inlet holes and a plurality of water outlet holes which are connected with a water inlet pipe and a plurality of water outlet pipes on the heat dissipation plate respectively. According to the utility model, self-adaptive adjustment can be carried out according to the surface temperature of the new energy battery, the heat dissipation effect of the area with high temperature is stronger, the temperature of each battery in the battery PACK can be balanced, the temperature consistency of each battery monomer during working is ensured, the use performance of the whole battery system is improved, and the service life of the battery is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of battery heat dissipation equipment, and in particular to a battery system heat dissipation device with adaptive and precise regulation. Background Art

[0002] Battery systems are widely used in different industries such as new energy vehicles, home energy storage, and commercial energy storage. The battery systems used in these different application scenarios are grouped by connecting different numbers of battery cells in series and parallel to form battery PACKs before they can be promoted and used. During the grouping and use of battery PACKs, due to the different use environments, the layout of each battery cell, and the degradation rate, there are obvious temperature differences between each battery cell during actual use, and even obvious temperature differences between the left and right sides of the same single cell. Temperature has a great impact on battery performance. Excessive temperature or large temperature difference affects battery output performance, causes system failures, and even disasters. At this stage, the battery cooling method adopts overall cooling, and it is carried out outside the battery pack. This heat dissipation method not only has poor heat dissipation effect, but also cannot accurately dissipate heat for each cell and different parts of the cell, which easily leads to uneven heat dissipation and affects the efficient operation of the battery. Utility Model Content

[0003] The utility model provides a battery system heat dissipation device with adaptive and precise regulation to solve the technical problems mentioned in the background technology.

[0004] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0005] The utility model provides a battery system heat dissipation device with adaptive and precise control, including a plurality of heat dissipation modules, each of which includes:

[0006] Multiple heat sinks are arranged on the side walls of multiple battery blocks respectively; a water inlet pipe, multiple water outlet pipes and multiple heat dissipation channels connecting the water inlet pipe and the multiple water outlet pipes are installed at the bottom of each heat sink; multiple adaptive heat dissipation units are installed on each heat sink, so that the heat sink can adaptively adjust the opening diameter of the water inlet pipe according to the different temperatures of the nearest battery block and the left and right sides, thereby realizing adaptive adjustment of the flow of multiple heat dissipation channels and accurately controlling the temperature of the left and right sides of each battery block;

[0007] A connecting mechanism, used for connecting a plurality of heat sinks;

[0008] The water delivery plate is provided with a plurality of water inlet holes and a plurality of water outlet holes, which are respectively connected with the water inlet pipe and a plurality of water outlet pipes on each heat dissipation plate.

[0009] Furthermore, the heat dissipation device also includes a battery series connection member installed on the top of the multiple battery blocks and used to connect the multiple battery blocks in series.

[0010] Furthermore, the number of the adaptive heat dissipation units and the water outlet pipes in each heat dissipation plate is set to two, and the two adaptive heat dissipation units are symmetrically arranged around the water inlet pipe, and the delivery amount of the coolant on the left and right sides of the battery block can be adjusted respectively. Each adaptive heat dissipation unit includes:

[0011] The piston cylinder is installed at the bottom of the heat sink; the inner side close to the water inlet pipe is filled with phase change material;

[0012] The first connecting member has a middle portion that is rotatably connected to the heat sink; and has long holes on the top and bottom;

[0013] A piston rod, one end of which is slidably and sealingly connected in the inner hole of the piston cylinder, and the other end of which is overlapped in the long hole at the top of the first connecting member;

[0014] The first gear is rotated to connect the bottom of the heat sink;

[0015] A water valve is rotatably connected to the top of the water inlet pipe, and an outer side surface is provided with a toothed portion meshing with the first gear;

[0016] One end of the second connecting member is overlapped in the long hole at the bottom of the first connecting member, and the other end is transmission-connected to the first gear through a gear rack mechanism.

[0017] Furthermore, the number of heat dissipation channels on each heat dissipation plate is four, that is, the left and right sides of the water inlet pipe are connected to the corresponding water outlet pipe through two heat dissipation channels.

[0018] Furthermore, the phase change material filled in the piston cylinder is stearic acid;

[0019] Furthermore, the battery block includes a new energy battery and a battery casing mounted outside the new energy battery. The battery block is a square battery.

[0020] Furthermore, the connecting mechanism comprises:

[0021] Two connecting rods pass through two sides of the plurality of heat sinks arranged in an array;

[0022] A plurality of hexagonal nuts are divided into two groups and are respectively threadedly connected to the two connecting rods. The plurality of hexagonal nuts are used to fix a plurality of heat sinks on the two connecting rods.

[0023] Furthermore, the connecting mechanism further comprises:

[0024] A plurality of spring washers are arranged between the plurality of hexagonal nuts and the plurality of heat sinks, so that the plurality of hexagonal nuts respectively fix the plurality of heat sinks on the two connecting rods through the plurality of spring washers.

[0025] Furthermore, the number of the heat dissipation modules is more than two, and the more than two heat dissipation modules are connected in series and / or in parallel.

[0026] On the other hand, the present invention also provides a temperature control method for a battery system heat dissipation device, which uses the battery system heat dissipation device described above to dissipate heat for multiple battery blocks, specifically comprising the following steps:

[0027] S1. First, coolant is continuously delivered to the water delivery plate. At this moment, the water inlet pipe is completely blocked by the water valves on the left and right sides, and the water inlet pipe is in a closed state;

[0028] S2. During the use of multiple battery blocks, the local temperature gradually increases;

[0029] S3. The phase change material filled in the piston cylinder changes with temperature and pushes the first connecting member to rotate through the piston rod, and the first connecting member pushes the second connecting member to slide laterally. During this process, the second connecting member will push the left water valve and / or the right water valve to rotate through the gear rack mechanism and the first gear. During the rotation of the water valve, the opening diameter of the water inlet pipe leading to the two water outlet pipes will be adaptively adjusted;

[0030] S4. The coolant continues to flow into the corresponding heat dissipation channel through the water inlet pipe with adjusted opening diameter, dissipates heat on the surface of the battery block, and is finally discharged through the corresponding water outlet pipe.

[0031] Beneficial effects of the utility model:

[0032] The utility model can realize accurate regulation of the surface temperature of each battery block in the battery system. On the one hand, the temperature difference between the left and right sides of a single battery block can be accurately adjusted through multiple heat dissipation plates. On the other hand, the water delivery plate can also cool the bottom surface of the battery block. In addition, the top surface of each battery block in the battery system is exposed to the air, and air cooling can be fully utilized to cool the top surface of each battery block, which is most practical for large-capacity square battery blocks.

[0033] Among them, when multiple heat sinks adjust the temperature difference on the left and right sides of a single battery block, the heat dissipation effect in the area with high temperature is stronger, making the heat dissipation of the new energy battery more uniform and increasing the service life of the new energy battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0035] Figure 2 It is an enlarged view of the three-dimensional structural schematic diagram of a single heat dissipation module in the utility model;

[0036] Figure 3 for Figure 2 A partial enlarged schematic diagram of the A part;

[0037] Figure 4 for Figure 2 A partial enlarged schematic diagram of the B part;

[0038] Figure 5 It is an enlarged diagram of the front structural schematic diagram of the heat dissipation plate in the utility model;

[0039] Figure 6 It is an enlarged view of the front cross-sectional view of the heat dissipation plate in the present utility model;

[0040] Figure 7 for Figure 6 A partial enlarged schematic diagram of the middle C part;

[0041] Figure 8 It is an enlarged view of the schematic diagram of the three-dimensional structure of the battery block in the utility model;

[0042] Fig. 9 It is an enlarged view of the three-dimensional structural schematic diagram of the battery shell in the utility model.

[0043] Description of reference numerals:

[0044] 1. heat dissipation module; 11. heat dissipation plate; 111. water inlet pipe; 112. water outlet pipe; 113. heat dissipation channel; 114. piston cylinder; 115. first connecting member; 116. piston rod; 117. first gear; 118. water valve; 1181. toothed portion; 119. second connecting member; 12. connecting mechanism; 121. connecting rod; 122. hexagonal nut; 123. spring washer; 13. water delivery plate;

[0045] 2. Battery block; 21. New energy battery; 22. Battery casing;

[0046] 3. Battery series components. DETAILED DESCRIPTION

[0047] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the relevant drawings. The drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many other different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0048] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0049] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0050] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying 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 one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0051] 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.

[0052] It should also be noted that, in the embodiments of the present application, the same figure mark is used to represent the same component or the same part. For the same parts in the embodiments of the present application, the figure may only mark one of the parts or components as an example. It should be understood that the figure mark also applies to other identical parts or components.

[0053] Reference Figure 1 , Figure 2 and Figure 5 The embodiment of the present application provides a battery system heat dissipation device with adaptive and precise control, including a plurality of heat dissipation modules 1, each heat dissipation module 1 including:

[0054] Multiple heat sinks 11 are arranged on the side walls of multiple battery blocks 2 respectively; a water inlet pipe 111, multiple water outlet pipes 112 and multiple heat dissipation channels 113 connecting the water inlet pipe 111 and the multiple water outlet pipes 112 are installed at the bottom of each heat sink 11; multiple adaptive heat dissipation units are installed on each heat sink 11, so that the heat sink 11 can adaptively adjust the opening diameter of the water inlet pipe 111 according to the temperature of the nearest battery block 2, thereby realizing adaptive adjustment of the flow of multiple heat dissipation channels 113;

[0055] A connecting mechanism 12, used for connecting a plurality of heat sinks 11;

[0056] The water delivery plate 13 is provided with a plurality of water inlet holes 131 and a plurality of water outlet holes 132 , which are respectively connected to the water inlet pipe 111 and the plurality of water outlet pipes 112 on each heat dissipation plate 11 .

[0057] In some embodiments, reference Figure 2 and Figure 3 The heat dissipation device also includes a battery series connection member 3 installed on the top of the multiple battery blocks 2 and used to connect the multiple battery blocks 2 in series.

[0058] In some embodiments, the number of the adaptive heat dissipation units and the water outlet pipe 112 in each heat dissipation plate 11 is set to two, and the two adaptive heat dissipation units are arranged symmetrically around the water inlet pipe 111 (the L direction in the figure is the left side, and the R direction is the right side), and each adaptive heat dissipation unit includes:

[0059] The piston cylinder 114 is installed at the bottom of the heat sink 11; the inner side close to the water inlet pipe 111 is filled with phase change material;

[0060] The first connecting member 115 is rotatably connected to the heat sink 11 in the middle, and has long holes at the top and bottom;

[0061] The piston rod 116 has one end slidably and sealingly connected in the inner hole of the piston cylinder 114, and the other end overlaps in the long hole at the top of the first connecting member 115;

[0062] The first gear 117 is rotatably connected to the bottom of the heat sink 11;

[0063] The water valve 118 is rotatably connected to the top of the water inlet pipe 111, and the outer side thereof is provided with a toothed portion 1181 meshing with the first gear 117;

[0064] One end of the second connecting member 119 is overlapped in the long hole at the bottom of the first connecting member 115, and the other end is transmission-connected to the first gear 117 through a gear rack mechanism.

[0065] In some embodiments, reference Figure 6 , the number of heat dissipation channels 113 on each heat dissipation plate 11 is multiple. In this embodiment, preferably, the number of heat dissipation channels 113 on each heat dissipation plate 11 is four, that is, the left and right sides of the water inlet pipe 111 are connected to the corresponding water outlet pipe 112 through two heat dissipation channels 113. This design allows the heat dissipation device to connect different numbers of heat dissipation channels 113 for cooling according to different temperatures; at the same time, this design can also increase the contact area between the heat dissipation plate 1 and the battery block 2, thereby improving the heat dissipation effect.

[0066] For ease of understanding, four heat dissipation channels 113 are taken as an example below. First, the two heat dissipation channels 113 on the left are defined as the first channel and the second channel from left to right, and the two heat dissipation channels 113 on the right are defined as the third channel and the fourth channel from left to right; wherein the first channel and the second channel are connected to the water outlet pipe 112 on the left, and the third channel and the fourth channel are connected to the water outlet pipe 112 on the right. Secondly, it is defined that when the temperature reaches a degree, the second channel and the third channel are both connected to the water inlet pipe 111, and when the temperature reaches b degree, the first channel, the second channel, the third channel and the fourth channel are all connected to the water inlet pipe 111. Therefore, when the temperature is below a degree, the water inlet pipe 111 is in a closed state, and when a-b (excluding b degrees), only the second channel and the third channel are both connected to the water inlet pipe 111.

[0067] In some embodiments, the phase change material filled in the piston cylinder 114 is stearic acid (SA); stearic acid easily shrinks when heated and expands when cooled, and stearic acid changes with temperature, thereby driving the piston rod 116 to move;

[0068] In some embodiments, reference Figure 8 and Fig. 9 The battery block 2 includes a new energy battery 21 and a battery housing 22 mounted outside the new energy battery 21. When any new energy battery 21 in the battery pack has a problem, the new energy battery 21 can be quickly replaced, which can improve the replacement efficiency of the new energy battery 21.

[0069] In particular, different new energy vehicles can be adapted by adding or reducing battery blocks 2.

[0070] In some embodiments, reference Figure 2 and Figure 4 , the connecting mechanism 12 comprises:

[0071] Two connecting rods 121 pass through two sides of the plurality of heat sinks 11 arranged in an array;

[0072] The multiple hexagonal nuts 122 are divided into two groups and are respectively threadedly connected to the two connecting rods 121 . The multiple hexagonal nuts 122 are used to fix the multiple heat sinks 11 on the two connecting rods 121 .

[0073] In some embodiments, the connecting mechanism 12 further includes:

[0074] The plurality of spring washers 123 are disposed between the plurality of hexagonal nuts 122 and the plurality of heat sinks 11 , so that the plurality of hexagonal nuts 122 fix the plurality of heat sinks 11 on the two connecting rods 121 through the plurality of spring washers 123 .

[0075] In some embodiments, the number of the heat dissipation modules 1 is multiple. In this embodiment, the number of the heat dissipation modules 1 is more than two, and the more than two heat dissipation modules 1 are connected in series and / or in parallel. Preferably, the number of the heat dissipation modules 1 in this embodiment is three; specifically, the connection method (series and / or parallel) of the three heat dissipation modules 1 is adjusted according to actual needs to improve the scope of application of the utility model.

[0076] On the other hand, the present invention also provides a temperature control method for a battery system heat dissipation device, which uses the battery system heat dissipation device described above to dissipate heat for a plurality of battery blocks 2, specifically comprising the following steps:

[0077] S1, firstly, coolant is continuously delivered to the water delivery plate 13. At this moment, the water inlet pipe 111 is completely blocked by the water valves 118 on the left and right sides, and the water inlet pipe 111 is in a closed state;

[0078] S2. During the use of the plurality of battery blocks 2, the local temperature gradually increases;

[0079] S3, the phase change material filled in the piston cylinder 114 changes with the temperature, and pushes the first connecting member 115 to rotate through the piston rod 116, and the first connecting member 115 pushes the second connecting member 119 to slide horizontally. During this process, the second connecting member 119 will push the left water valve 118 and / or the right water valve 118 to rotate through the gear rack mechanism and the first gear 117. During the rotation of the water valve 118, the opening diameter of the water inlet pipe 111 leading to the two water outlet pipes 112 will be adaptively adjusted;

[0080] S4. The coolant continues to flow into the corresponding heat dissipation channel 113 through the water inlet pipe 111 with an adjusted opening diameter, dissipates heat on the surface of the battery block 2, and is finally discharged through the corresponding water outlet pipe 112.

[0081] The utility model can realize accurate regulation of the surface temperature of each battery block 2 in a battery system (composed of multiple battery blocks 2 connected in series and / or in parallel). On the one hand, the temperature difference between the left and right sides of a single battery block 2 can be accurately adjusted through multiple heat dissipation plates 11. On the other hand, the water delivery plate 13 can also cool the bottom surface of the battery block 2. In addition, the top surface of each battery block 2 in the battery system is exposed to the air, and air cooling can be fully utilized to cool the top surface of each battery block 2. This is most practical for large-capacity square battery blocks.

[0082] Among them, when the multiple heat dissipation plates 11 adjust the temperature difference between the left and right sides of a single battery block 2, the heat dissipation effect in the area with high temperature is stronger, so that the heat dissipation of the new energy battery 21 is more uniform, and the service life of the new energy battery 21 is improved.

[0083] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field can easily think of changes or replacements within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. In addition, the technical solutions between the various implementations of the utility model can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope of the utility model. Therefore, the protection scope of the utility model shall be based on the protection scope of the claims.

Claims

1. A battery system heat dissipation device with adaptive and precise control, characterized in that: It comprises a plurality of heat dissipation modules (1), each heat dissipation module (1) comprising: A plurality of heat dissipation plates (11) are arranged on the side walls of a plurality of battery blocks (2) respectively; a water inlet pipe (111), a plurality of water outlet pipes (112) and a plurality of heat dissipation channels (113) connecting the water inlet pipe (111) and the plurality of water outlet pipes (112) are installed at the bottom of each heat dissipation plate (11); a plurality of adaptive heat dissipation units are installed on each heat dissipation plate (11) so that the heat dissipation plate (11) can adaptively adjust the opening diameter of the water inlet pipe (111) according to the temperature of the nearest battery block (2), thereby realizing adaptive regulation of the flow of the plurality of heat dissipation channels (113); A connecting mechanism (12) for connecting a plurality of heat sinks (11); The water delivery plate (13) is provided with a plurality of water inlet holes (131) and a plurality of water outlet holes (132), which are respectively connected to the water inlet pipe (111) and the plurality of water outlet pipes (112) on each heat dissipation plate (11).

2. The battery system heat dissipation device according to claim 1, characterized in that: It also includes a battery series connection member (3) which is installed on the top of the multiple battery blocks (2) and is used to connect the multiple battery blocks (2) in series.

3. The battery system heat dissipation device according to claim 1, characterized in that: The number of the adaptive heat dissipation units and the water outlet pipe (112) in each heat dissipation plate (11) is set to two, and the two adaptive heat dissipation units are symmetrically arranged around the water inlet pipe (111), and each adaptive heat dissipation unit comprises: The piston cylinder (114) is installed at the bottom of the heat sink (11); a phase change material is filled on one side of the interior close to the water inlet pipe (111); The first connecting member (115) is rotatably connected to the heat dissipation plate (11) in the middle, and has long holes at the top and bottom; A piston rod (116), one end of which is slidably and sealingly connected in the inner hole of the piston cylinder (114), and the other end of which is overlapped in the long hole at the top of the first connecting member (115); A first gear (117) is rotatably connected to the bottom of the heat sink (11); A water valve (118) is rotatably connected to the top of the water inlet pipe (111), and an outer side surface is provided with a toothed portion (1181) meshing with the first gear (117); One end of the second connecting member (119) is overlapped in the long hole at the bottom of the first connecting member (115), and the other end is transmission-connected to the first gear (117) through a gear rack mechanism.

4. The battery system heat dissipation device according to claim 3, characterized in that: The number of heat dissipation channels (113) on each heat dissipation plate (11) is four, that is, the left and right sides of the water inlet pipe (111) are connected to the corresponding water outlet pipe (112) through two heat dissipation channels (113).

5. The battery system heat dissipation device according to claim 1, characterized in that: The battery block (2) comprises a new energy battery (21) and a battery casing (22) mounted on the outside of the new energy battery (21).

6. The battery system heat dissipation device according to claim 1, characterized in that: The connecting mechanism (12) comprises: Two connecting rods (121) respectively pass through two sides of the plurality of heat sinks (11) arranged in an array; A plurality of hexagonal nuts (122) are divided into two groups and are respectively threadedly connected to the two connecting rods (121). The plurality of hexagonal nuts (122) are used to fix the plurality of heat sinks (11) to the two connecting rods (121).

7. The battery system heat dissipation device according to claim 6, characterized in that: The connecting mechanism (12) further comprises: A plurality of spring washers (123) are arranged between the plurality of hexagonal nuts (122) and the plurality of heat sinks (11), so that the plurality of hexagonal nuts (122) respectively fix the plurality of heat sinks (11) on the two connecting rods (121) through the plurality of spring washers (123).

8. The battery system heat dissipation device according to claim 1, characterized in that: The number of the heat dissipation modules (1) is more than two, and the more than two heat dissipation modules (1) are connected in series and / or in parallel.

Images