Detachable liquid-cooled battery pack

Abstract

The utility model relates to the technical field of liquid-cooled battery packs, and discloses a detachable liquid-cooled battery pack which comprises a box body, a first heat dissipation groove is formed in the box body, a liquid inlet pipe is arranged in the box body, a liquid outlet pipe is arranged in the box body, and a heat conduction plate is arranged in the box body. A cooling mechanism is arranged between the liquid inlet pipe and the liquid outlet pipe, and a positioning mechanism is arranged at the bottom of the heat conduction plate. Through the design of the four liquid cooling pipes, the problems that the serpentine pipe is long, the temperature of cooling liquid is high when the serpentine pipe reaches the tail end, the battery in the tail end area of the serpentine pipe cannot be cooled, the temperature of the battery in the box body is likely to be different in the cooling process, and the consistency of the temperature of the battery is affected are solved. According to the invention, the spiral twisted sheet rotates, so that the cooling liquid is disturbed, the cooling liquid is close to a full turbulence state, and the cooling liquid is rapidly dispersed after absorbing heat.

Description

Technical Field

[0001] This utility model relates to the field of liquid-cooled battery pack technology, specifically a detachable liquid-cooled battery pack. Background Technology

[0002] A battery pack is a charging and discharging device that converts chemical energy into electrical energy. A battery pack includes battery modules, which are composed of multiple individual cells. During charging and discharging, batteries generate heat, causing the surface temperature of the batteries to rise. If the battery pack cannot dissipate heat in time, its performance will deteriorate, and it may even affect the lifespan of the battery pack.

[0003] According to the description in the patent application (authorization announcement number: CN 214797629 U), "This utility model discloses a liquid-cooled battery pack, including a chassis and a battery module. The battery module is disposed inside the chassis, which has a swirling groove. A liquid-cooling pipe is disposed in the groove, and the liquid-cooling pipe is attached to the battery module. The connectors at both ends of the liquid-cooling pipe are connected to an external power pump. This utility model improves space utilization and reduces the volume of the battery pack."

[0004] Regarding the aforementioned patent content, the following issues exist:

[0005] This utility model improves space utilization and reduces battery pack volume by setting a rotating groove on the bottom plate of the battery pack chassis to house the liquid cooling pipe. However, in actual use, the temperature of the cooling medium gradually rises during the cooling process, and the cooling effect gradually weakens. This can easily cause temperature differences among the batteries inside the battery pack during the cooling process, thus affecting the consistency of battery temperature and consequently affecting battery performance and lifespan. Therefore, it is necessary to develop a detachable liquid-cooled battery pack to solve the above problems. Summary of the Invention

[0006] The purpose of this invention is to provide a detachable liquid-cooled battery pack to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solutions:

[0008] A detachable liquid-cooled battery pack includes a housing with a heat dissipation groove inside, an inlet pipe inside the housing, an outlet pipe inside the housing, a heat-conducting plate inside the housing, a cooling mechanism between the inlet pipe and the outlet pipe, and a positioning mechanism at the bottom of the heat-conducting plate for facilitating the positioning and installation of the liquid-cooling pipe.

[0009] Preferably, the cooling mechanism includes an installation tube, which is located at one end of the inlet pipe and outlet pipe near the positioning mechanism. An installation ring is provided on the outside of the installation tube, and two bolts are threaded inside the installation ring. A fixing bracket is fixedly installed inside the installation tube, and a rotating shaft is rotatably installed inside the fixing bracket. An impeller is fixedly installed on the outside of the rotating shaft on the left side. A liquid cooling pipe is fixedly installed between the two installation tubes. A spiral twisting vane is provided inside the rotating shaft. The rotation of the spiral twisting vane causes disturbance in the coolant, making the coolant close to a fully turbulent state.

[0010] Preferably, the spiral twisting blade is disposed inside the two rotating shafts, and the outside of the liquid cooling pipe is in contact with the bottom of the heat-conducting plate for heat exchange.

[0011] Preferably, the mounting ring is disposed outside the inlet pipe or outlet pipe.

[0012] Preferably, the positioning mechanism includes two rectangular blocks, both of which are fixedly installed on the bottom of the heat-conducting plate. A positioning rod is provided between the two rectangular blocks. A heat dissipation groove is provided inside the positioning rod. Two springs are fixedly installed inside the positioning rod. A positioning block is fixedly installed at the end of each spring away from the positioning rod. A control plate is fixedly installed at the bottom of the positioning block. Pulling the control plate can cause the positioning block to detach from the rectangular block.

[0013] Preferably, the control board is slidably installed inside the positioning rod, the positioning block is slidably installed inside the positioning rod, and the positioning block is inserted into the rectangular block to complete the installation of the positioning rod.

[0014] Preferably, the positioning rod is located outside the liquid cooling pipe to support the liquid cooling pipe, making the installation of the liquid cooling pipe more stable.

[0015] Compared with the prior art, this utility model provides a detachable liquid-cooled battery pack, which has the following advantages:

[0016] 1. This detachable liquid-cooled battery pack avoids the problem of the long serpentine tubes causing the coolant temperature to be too high at the end, making it impossible to cool the battery at the end of the serpentine tube. This can easily lead to temperature differences among the batteries inside the pack during the cooling process, affecting the consistency of battery temperature and consequently impacting battery performance and lifespan.

[0017] 2. Based on this, the present invention uses the rotation of the spiral twisting blade to cause disturbance in the coolant, making the coolant close to a fully turbulent state. This allows the coolant to quickly disperse after absorbing heat, resulting in a rapid decrease in the temperature of the coolant near the heat-conducting plate. This avoids the problem of slow heat diffusion and high temperature near the outlet pipe, which leads to poor cooling effect. Furthermore, the battery and the liquid cooling pipe are not in direct contact, so if the liquid cooling pipe is damaged and leaks, it will not flow to the battery and cause a short circuit, resulting in good sealing performance.

[0018] 3. Based on this, the present invention allows the liquid cooling pipe to be disassembled and replaced by pulling the control plate to move the positioning block away from the rectangular block, and then by turning the bolt to disassemble it from the mounting ring. This makes it convenient and quick to replace any damaged liquid cooling pipe. The positioning rod supports the liquid cooling pipe, making the installation of the liquid cooling pipe more stable. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the appearance and structure of this utility model.

[0021] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0022] Figure 3 This is a schematic diagram of the heat-conducting plate and its connected mechanism of the present invention.

[0023] Figure 4 This is a cross-sectional structural diagram of the cooling mechanism of this utility model.

[0024] Figure 5 This is a schematic diagram of the installation pipe and its connected mechanism of the present invention.

[0025] Figure 6 This is an exploded view of the positioning mechanism of this utility model.

[0026] In the diagram: 1. Housing; 2. Heat dissipation trough one; 3. Liquid inlet pipe; 4. Liquid outlet pipe; 5. Heat conduction plate; 6. Cooling mechanism; 61. Mounting pipe; 62. Mounting ring; 63. Bolt; 64. Fixing bracket; 65. Rotating shaft; 66. Impeller; 67. Liquid cooling pipe; 68. Spiral twisting vane; 7. Positioning mechanism; 71. Rectangular block; 72. Positioning rod; 73. Heat dissipation trough two; 74. Spring; 75. Positioning block; 76. Control board. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. Example 1

[0029] Please see Figure 1-5 This utility model provides a technical solution: a detachable liquid-cooled battery pack, including a housing 1, a heat dissipation groove 2 inside the housing 1, an inlet pipe 3 inside the housing 1, an outlet pipe 4 inside the housing 1, a heat-conducting plate 5 inside the housing 1, a cooling mechanism 6 between the inlet pipe 3 and the outlet pipe 4, and a positioning mechanism 7 at the bottom of the heat-conducting plate 5 to facilitate the positioning and installation of the liquid-cooled pipe 67.

[0030] Furthermore, the cooling mechanism 6 includes an installation pipe 61, which is located at one end of the liquid inlet pipe 3 and the liquid outlet pipe 4 near the positioning mechanism 7. An installation ring 62 is provided on the outside of the installation pipe 61, and two bolts 63 are installed in the internal thread of the installation ring 62. A fixing bracket 64 is fixedly installed inside the installation pipe 61, and a rotating shaft 65 is rotatably installed inside the fixing bracket 64. An impeller 66 is fixedly installed on the outside of the left rotating shaft 65. A liquid cooling pipe 67 is fixedly installed between the two installation pipes 61. A spiral twisting vane 68 is provided inside the rotating shaft 65. The rotation of the spiral twisting vane 68 causes the coolant to be disturbed, making the coolant close to a fully turbulent state.

[0031] Furthermore, the spiral twisted blades 68 are disposed inside the two rotating shafts 65, and the outside of the liquid cooling pipe 67 contacts the bottom of the heat-conducting plate 5 for heat exchange.

[0032] Furthermore, the mounting ring 62 is disposed outside the inlet pipe 3 or the outlet pipe 4. Example 2

[0033] Please see Figure 6Furthermore, in conjunction with Embodiment 1, the positioning mechanism 7 includes two rectangular blocks 71, both of which are fixedly installed at the bottom of the heat-conducting plate 5. A positioning rod 72 is provided between the two rectangular blocks 71. A heat dissipation groove 73 is provided inside the positioning rod 72. Two springs 74 are fixedly installed inside the positioning rod 72. A positioning block 75 is fixedly installed at the end of each spring 74 away from the positioning rod 72. A control plate 76 is fixedly installed at the bottom of the positioning block 75. Pulling the control plate 76 can cause the positioning block 75 to detach from the rectangular block 71.

[0034] Furthermore, the control board 76 is slidably installed inside the positioning rod 72, the positioning block 75 is slidably installed inside the positioning rod 72, and the positioning block 75 is inserted into the rectangular block 71 to complete the installation of the positioning rod 72.

[0035] Furthermore, the positioning rod 72 is set on the outside of the liquid cooling pipe 67 to support the liquid cooling pipe 67, making the installation of the liquid cooling pipe 67 more stable.

[0036] In actual operation, when this device is used, the heat generated by the battery inside the housing 1 is conducted to the outside of the liquid cooling pipe 67 under the heat conduction plate 5. Then, the coolant enters the four mounting pipes 61 through the inlet pipe 3. The design of the four liquid cooling pipes 67 avoids the problem that if the serpentine tube is too long, the coolant temperature will be too high at the end, making it impossible to cool the battery at the end of the serpentine tube. This would easily cause temperature differences in the batteries inside the housing 1 during the cooling process, thus affecting the uniformity of battery temperature and consequently affecting battery performance and lifespan. The coolant then enters the interior of the liquid cooling pipe 67, and the flow of coolant drives the impeller 66 to rotate, causing the shaft 65 to rotate inside the fixed frame 64, thereby driving the spiral twisting vane 68 to rotate. This causes the coolant to turbulent, making the coolant close to a fully turbulent state, so that the coolant inside the liquid cooling pipe 67 is in an active state, absorbing heat. After collection, the coolant is quickly dispersed, causing the coolant near the heat-conducting plate 5 to drop rapidly, preventing slow heat dissipation. The coolant near the contact point of the outlet pipe 4 does not diffuse in time, resulting in a higher temperature and poor cooling effect. Furthermore, the battery and liquid cooling pipe 67 are not in direct contact, so if the liquid cooling pipe 67 is damaged and leaks, it will not flow to the battery and cause a short circuit, ensuring good sealing. When the liquid cooling pipe 67 is damaged and needs replacement, pulling the control plate 76 causes the positioning block 75 to disengage from the rectangular block 71. At this time, the spring 74 is compressed, initially in a stretched state, disengaging the positioning rod 72 from the liquid cooling pipe 67. Then, the bolt 63 is tightened to disengage from the mounting ring 62, allowing the liquid cooling pipe 67 to be disassembled and replaced. This allows for quick and easy replacement of any damaged liquid cooling pipe 67. The positioning rod 72 supports the liquid cooling pipe 67, making its installation more stable.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A detachable liquid-cooled battery pack, comprising a housing (1), characterized in that: The box (1) has a heat dissipation groove (2) inside, an inlet pipe (3) inside, an outlet pipe (4) inside, a heat-conducting plate (5) inside, a cooling mechanism (6) between the inlet pipe (3) and the outlet pipe (4), and a positioning mechanism (7) at the bottom of the heat-conducting plate (5).

2. The detachable liquid-cooled battery pack according to claim 1, characterized in that: The cooling mechanism (6) includes an installation tube (61), which is located at one end of the liquid inlet pipe (3) and the liquid outlet pipe (4) near the positioning mechanism (7). An installation ring (62) is provided on the outside of the installation tube (61), and two bolts (63) are installed in the internal thread of the installation ring (62). A fixing bracket (64) is fixedly installed inside the installation tube (61), and a rotating shaft (65) is rotatably installed inside the fixing bracket (64). An impeller (66) is fixedly installed on the outside of the left rotating shaft (65). A liquid cooling pipe (67) is fixedly installed between the two installation tubes (61), and a spiral twisting blade (68) is provided inside the rotating shaft (65).

3. A detachable liquid-cooled battery pack according to claim 2, characterized in that: The spiral twisted blade (68) is disposed inside the two rotating shafts (65), and the outside of the liquid cooling pipe (67) is in contact with the bottom of the heat-conducting plate (5).

4. A detachable liquid-cooled battery pack according to claim 2, characterized in that: The mounting ring (62) is located outside the inlet pipe (3) or outlet pipe (4).

5. A detachable liquid-cooled battery pack according to claim 1, characterized in that: The positioning mechanism (7) includes two rectangular blocks (71), both of which are fixedly installed at the bottom of the heat-conducting plate (5). A positioning rod (72) is provided between the two rectangular blocks (71). A heat dissipation groove (73) is provided inside the positioning rod (72). Two springs (74) are fixedly installed inside the positioning rod (72). A positioning block (75) is fixedly installed at the end of each of the two springs (74) away from the positioning rod (72). A control plate (76) is fixedly installed at the bottom of the positioning block (75).

6. A detachable liquid-cooled battery pack according to claim 5, characterized in that: The control panel (76) is slidably mounted inside the positioning rod (72), the positioning block (75) is slidably mounted inside the positioning rod (72), and the positioning block (75) is inserted into the rectangular block (71).

7. A detachable liquid-cooled battery pack according to claim 5, characterized in that: The positioning rod (72) is located outside the liquid cooling pipe (67).

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