High and low temperature test box for lithium battery module

Abstract

The utility model provides a high and low temperature test box for a lithium battery module. The high and low temperature test box for the lithium battery module comprises a box body, a box door, a sealing strip and a limiting assembly, wherein the box door is hinged to the box body, and a closed space can be defined by the box door and the box body; the sealing strip is detachably arranged on the edge, not hinged to the box body, of the box door. The limiting assembly is detachably arranged on the box door and the sealing strip in a penetrating mode so as to limit the box door and the sealing strip. The utility model has the advantages that the sealing strip is easy to replace, and the sealing performance and the safety are good.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery testing equipment technology, and in particular to a high and low temperature test chamber for lithium battery modules. Background Technology

[0002] A high and low temperature test chamber is a testing device used to simulate the working state of lithium batteries under adverse temperature conditions. It aims to test the impact of different temperature conditions on the battery's endurance and charge-discharge cycle count. A high and low temperature test chamber typically includes a temperature control system, a circulating air system, and a heating / cooling system to achieve the circulation and maintenance of high and low temperature environments within the chamber. When conducting high and low temperature tests on lithium battery modules, the power is first turned on, and the lithium battery modules are placed inside the chamber at certain intervals. Then, the temperature is set as required and maintained for a period of time. Afterward, the power is turned off, and the lithium battery modules are allowed to cool naturally for a period of time before being removed. The changes on the sample surface are then observed and recorded.

[0003] Because the temperature of a high and low temperature test chamber fluctuates frequently, the sealing strips used to seal the edges of the chamber are prone to aging and even brittle fracture. Aged sealing strips cannot guarantee the airtightness of the internal space of the test chamber, which will affect the accuracy of the test. Therefore, the sealing strips need to be replaced regularly. However, the sealing strips of commonly available high and low temperature test chambers are usually fixed by adhesive bonding, making the replacement process complex and time-consuming. Utility Model Content

[0004] In view of this, the present invention aims to propose a high and low temperature test chamber for lithium battery modules, which can more conveniently replace the sealing strip, solve the problem of complicated replacement of sealing strips in the prior art, and make the high and low temperature test chamber have better sealing performance and safety.

[0005] In order to achieve the above-mentioned purpose, the technical solution of the utility model is achieved as follows:

[0006] This utility model discloses a high and low temperature test chamber for lithium battery modules, including a chamber body;

[0007] The door is hinged to the box body and can form a sealed space with the box body;

[0008] A sealing strip is detachably installed on the edge of the cabinet door that is not hinged to the cabinet body;

[0009] A limiting component is detachably mounted on the door and the sealing strip to limit the movement of the door and the sealing strip.

[0010] Furthermore, the limiting component includes a sleeve;

[0011] The locking block is slidably disposed on the inner wall of the sleeve, and the sliding direction is perpendicular to the axial direction of the sleeve;

[0012] A pin is slidably disposed on the sleeve, and the sliding direction is parallel to the axial direction of the sleeve;

[0013] The pin has a clearance groove, and the door has a limit groove. After the pin slides relative to the sleeve, it presses the locking block located in the clearance groove into the limit groove to achieve locking.

[0014] Furthermore, a return spring is provided in the limiting groove. When the locking block enters the limiting groove, the return spring is in a compressed state.

[0015] Furthermore, the locking blocks are configured to be a plurality of evenly distributed along the circumference of the sleeve, and the limiting grooves are configured to correspond one-to-one with the locking blocks.

[0016] Furthermore, an installation groove is provided on the edge of the door that is not hinged to the box body, and the sealing strip is engaged in the installation groove.

[0017] Furthermore, a locking assembly is provided inside the cabinet door;

[0018] The locking assembly includes a insert plate that is slidably mounted on the door.

[0019] A locking spring, one end of which is connected to the cabinet door and the other end of which abuts against the insert plate, causing the insert plate to have a tendency to slide away from the cabinet door;

[0020] The traction component has one end connected to the insert plate and the other end extending to the outside of the box door.

[0021] Furthermore, the locking components are configured in two sets, and are symmetrically distributed about the geometric center of the door.

[0022] Furthermore, a locking rod is slidably provided on the outer side of the cabinet door;

[0023] The locking rods are configured as two sets that are parallel to each other vertically.

[0024] Furthermore, a control panel is provided on one side of the enclosure, and a pressure sensor is provided on the top of the enclosure, the pressure sensor being electrically connected to the control panel.

[0025] Furthermore, a pressure relief valve is provided on the top of the enclosure, and the two ends of the pressure relief valve are respectively connected to the sealed space enclosed by the enclosure and the door and the outside.

[0026] Compared with the prior art, this utility model has the following advantages:

[0027] The lithium battery module high and low temperature test chamber of this utility model, through the cooperation of the chamber door and the chamber body, can form a sealed space for high and low temperature testing of lithium battery modules. The sealing strip installed on the chamber door can improve the sealing performance between the chamber door and the chamber body. The sealing strip, which is fixed to the chamber door by the limiting component, can be removed from the chamber door by disassembling the limiting component. Compared with the adhesive sealing strip in existing test chambers, its disassembly and assembly process is more convenient. When the sealing strip hardens or even breaks brittlely due to frequent changes in ambient temperature, it can be replaced in time, reducing the impact of sealing strip aging on the sealing performance at the joint between the chamber door and the chamber body. This solves the problem of complicated replacement of sealing strips in the prior art, giving the high and low temperature test chamber better sealing performance and safety.

[0028] Furthermore, by configuring the limiting component as a combination of a sleeve, a locking block, and a pin, the pin, which slides on the sleeve, can drive the locking block from the clearance groove into the limiting groove on the door during relative sliding with the sleeve. This fixes the relative position of the limiting component and the door, thereby locking the sealing strip. Conversely, the sealing strip can be removed from the door, simplifying the replacement process.

[0029] By setting a return spring in the limiting groove, when the limiting groove and the clearance groove are aligned, the locking block can enter the clearance groove under the elastic force of the return spring, thus making it easier to unlock the limiting component and the door.

[0030] By setting multiple locking blocks on the limiting component to be evenly distributed around the sleeve, the stability of the limiting component and the door after locking can be increased, and the possibility of misalignment and sliding between the limiting component and the door in the locked state can be reduced.

[0031] By creating an installation groove on the door and securing the sealing strip within it, the structural stability of the sealing strip is increased, preventing misalignment during door opening and closing and ensuring a tight seal at the door-to-body joint. The installation groove also limits and guides the sealing strip during installation, reducing the difficulty of installation and replacement.

[0032] Secondly, by setting a locking structure consisting of a plate, a locking spring, and a traction component on the door, the door can be locked. When the lithium battery module experiences thermal runaway or even explosion during high and low temperature tests, the locking assembly can prevent the door from being impacted by the explosion, which helps improve personnel safety. The overall structure is simple, reliable, and easy to operate.

[0033] By setting the number of locking components to two sets, the chamber door can be locked from both the top and bottom, thereby further improving the safety of the high and low temperature test chamber for lithium battery modules.

[0034] By installing a locking bar on the outside of the chamber door, the load-bearing capacity of the chamber door after it is locked can be further improved, avoiding deformation and cracking of the chamber door due to the impact caused by thermal runaway or explosion of the lithium battery module, which is conducive to improving the safety of the high and low temperature test chamber for lithium battery modules.

[0035] Furthermore, by installing a control panel and pressure sensors on the chamber, personnel can easily monitor the internal pressure and operate accordingly, thus improving the ease of use and safety of the lithium battery module high and low temperature test chamber.

[0036] By installing a pressure relief valve on the top of the chamber, personnel can easily reduce the gas pressure inside the chamber, thus improving the safety of high and low temperature test operations. Attached Figure Description

[0037] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0038] Figure 1 This is a schematic diagram of the high and low temperature test chamber for the lithium battery module in this embodiment of the present invention;

[0039] Figure 2 This is a schematic diagram of the high and low temperature test chamber for the lithium battery module in the open state in an embodiment of this utility model;

[0040] Figure 3 for Figure 2 A partial enlarged view of point A in the middle;

[0041] Figure 4 This is a schematic diagram of the limiting component in an embodiment of the present utility model;

[0042] Figure 5 This is a cross-sectional structural diagram of the limiting component and the box door in an embodiment of this utility model;

[0043] Figure 6 for Figure 2 A magnified view of a section at point B in the middle.

[0044] Explanation of reference numerals in the attached figures:

[0045] 1. Box body;

[0046] 2. Box door;

[0047] 201. Limiting groove; 202. Mounting groove; 203. Return spring;

[0048] 3. Sealing strip;

[0049] 4. Limiting components;

[0050] 401. Sleeve; 402. Locking block; 403. Pin; 404. Relief groove;

[0051] 5. Locking assembly;

[0052] 501. Insert plate; 502. Locking spring; 503. Traction component;

[0053] 6. Locking rod; 7. Control panel; 8. Pressure sensor; 9. Pressure relief valve. Detailed Implementation

[0054] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without creative effort.

[0055] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" appear, indicating orientation or positional relationship, they are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, if terms such as "first" or "second" appear, they are also used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0056] Taking the high and low temperature test chamber for lithium battery modules described in this utility model as an example, the directional terms used in the embodiments, such as "up," "down," "left," "right," "front," and "back," are defined based on the vertical direction (also known as the height direction or the Z-direction of the test chamber), the horizontal direction (also known as the width direction or the Y-direction of the test chamber), and the front and back direction (also known as the length direction or the X-direction of the test chamber). "Inner" and "outer" are defined based on the outline of the corresponding components. For example, "inner" and "outer" are defined based on the outline of the test chamber, with the side of the test chamber outline closer to the middle of the test chamber being "inner," and the opposite being "outer."

[0057] Furthermore, in the description of this utility model, unless otherwise explicitly defined, the terms "installation," "connection," "joining," and "connector" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model in light of the specific circumstances.

[0058] The following will refer to the appendix. Figure 1 To the attached Figure 6 The present invention will be described in detail with reference to the embodiments.

[0059] This embodiment relates to a high and low temperature test chamber for lithium battery modules. It uses a detachable limiting component to fix the sealing strip, achieving quick disassembly and easy replacement of the sealing strip. The high and low temperature test chamber for lithium battery modules in this embodiment has better sealing performance, which is beneficial to improving the accuracy of test results; it also has higher safety, effectively reducing the hazards caused by unexpected situations such as thermal runaway and explosion of lithium batteries during high and low temperature tests.

[0060] In terms of overall structure, refer to Figure 1 and Figure 2 The lithium battery module high and low temperature test chamber of this embodiment includes a chamber body 1, a door 2, a sealing strip 3, and a limiting component 4. The chamber body 1 is equipped with a heating device, a cooling device, a temperature control device, and a ventilation device, possessing various basic functions for conducting high and low temperature tests on lithium battery modules. The door 2 is hinged and rotatably mounted on the chamber body 1, forming a sealed space for high and low temperature testing of the lithium battery modules. The sealing strip 3 is detachably mounted on the edge of the door 2 that is not hinged to the chamber body 1, increasing the sealing performance between the door 2 and the chamber body 1. The limiting component 4 is detachably inserted through the door 2 and the sealing strip 3 to limit and fix the door 2 and the sealing strip 3.

[0061] As described above, the cooperation between the door 2 and the chamber body 1 forms a sealed space for high and low temperature testing of lithium battery modules. The sealing strip 3 installed on the door 2 improves the sealing performance between the door 2 and the chamber body 1. The sealing strip 3, fixed to the door 2 by the limiting component 4, can be removed from the door 2 by disassembling the limiting component 4. Compared with the adhesive sealing strip 3 in existing test chambers, its disassembly and assembly process is more convenient. When the sealing strip 3 hardens or even breaks brittlely due to frequent changes in ambient temperature, it can be replaced in time, reducing the impact of sealing strip 3 aging on the sealing performance at the joint between the door 2 and the chamber body 1. This solves the problem of complicated replacement of sealing strips in existing technologies, giving the high and low temperature test chamber better sealing performance and safety.

[0062] Based on the above design concept, specifically, in this embodiment, referring to Figure 2 , Figure 3 and Figure 4 The limiting component 4 includes a sleeve 401, a locking block 402, and a pin 403. The pin 403 is slidably disposed on the sleeve 401 along an axis parallel to the sleeve 401, and has a clearance groove 404. The locking block 402 is slidably disposed on the inner wall of the sleeve 401 along a direction perpendicular to the sleeve 401. The locking block 402 can slide into the clearance groove 404 on the pin 403. A limiting groove 201 is provided on the door 2. When the pin 403 and the sleeve 401 slide relative to each other, the locking block 402, driven by the pin 403, slides from the clearance groove 404 and enters the limiting groove 201, thereby fixing the relative position of the door 2 and the limiting component 4. When the pin 403 slides in the opposite direction to the sleeve 401 until the limiting groove 201 and the relief groove 404 are aligned, the locking block 402 can slide back into the relief groove 404 from the limiting groove 201, thereby releasing the relative position of the door 2 and the limiting assembly 4.

[0063] By configuring the limiting component 4 as a combination of sleeve 401, locking block 402, and pin 403, the pin 403, which is slidably mounted on sleeve 401, can drive the locking block 402 from the clearance groove 404 into the limiting groove 201 on the door 2 during relative sliding with sleeve 401. This fixes the relative position of the limiting component 4 and the door 2, thereby locking the sealing strip 3. Conversely, the sealing strip 3 can be removed from the door 2, simplifying the replacement process of the sealing strip 3.

[0064] Reference Figure 4 To improve the convenience of the limiting component 4, a return spring 203 is provided in the limiting groove 201 in this embodiment. The return spring 203 is set perpendicular to the limiting groove 201. One end of the return spring 203 is fixedly set to the door 2, and the other end abuts against the locking block 402. When the locking block 402 enters the limiting groove 201, the return spring 203 is compressed.

[0065] By setting a reset spring 203 in the limiting groove 201, when the limiting groove 201 and the clearance groove 404 are aligned, the locking block 402 can enter the clearance groove 404 under the elastic force of the reset spring 203, thus making it easier to unlock the limiting component 4 and the door 2.

[0066] Reference Figure 3 and Figure 4To improve the structural stability of the limiting component 4, in this embodiment, the number of locking blocks 402 is set to multiple. The multiple locking blocks 402 are evenly distributed along the circumference of the sleeve 401. The number of limiting grooves 201 is also set to multiple, with each limiting groove 201 corresponding to a locking block 402.

[0067] By setting multiple locking blocks 402 on the limiting component 4 to be evenly distributed around the sleeve 401, the stability of the limiting component 4 and the door 2 after locking can be increased, and the possibility of misalignment and sliding between the limiting component 4 and the door 2 in the locked state can be reduced.

[0068] Reference Figure 2 and Figure 3 To improve the stability of the sealing strip 3, in this embodiment, rectangular mounting grooves 202 are provided on the edges of the three sides of the door 2 that are not hinged to the body 1. The dimensions of the mounting grooves 202 are the same as the dimensions of the sealing strip 3. The sealing strip 3 is snapped into the mounting grooves 202.

[0069] By creating an installation groove 202 on the door 2 and engaging the sealing strip 3 within it, the structural stability of the sealing strip 3 is increased, preventing misalignment during the opening and closing of the door 2 and ensuring the seal between the door 2 and the body 1. The installation groove 202 also limits and guides the sealing strip 3 during installation, reducing the difficulty of installation and replacement.

[0070] Reference Figure 2 and Figure 6 A locking assembly 5 is installed inside the door 2. The locking assembly 5 includes a plate 501, a locking spring 502, and a traction member 503. The plate 501 is slidably disposed on the inner side of the door 2 along a vertical direction. One end of the locking spring 502 is fixedly connected to the door 2, and the other end abuts against the plate 501, causing the plate 501 to slide away from the door 2 due to its elasticity. One end of the traction member 503 is connected to the plate 501, and the other end extends to the outer side of the door 2. A slot is provided on the body 1 at a position corresponding to the plate 501. When the plate 501 is inserted into the slot under the elastic force of the locking spring 502, the door 2 and the body 1 are locked. When the plate 501 overcomes the spring force and slides out of the slot under the traction of the traction member 503, the door 2 and the body 1 are unlocked.

[0071] By installing a locking structure consisting of a plate 501, a locking spring 502, and a traction component 503 on the door 2, the door 2 can be locked. When the lithium battery module experiences thermal runaway or even explosion during high and low temperature tests, the locking assembly 5 can prevent the door 2 from being impacted by the explosion, thus improving personnel safety. The overall structure is simple, reliable, and easy to operate.

[0072] Reference Figure 2 and Figure 6 To further enhance security, the number of locking components 5 is set to two sets. The two sets of locking components 5 are symmetrically distributed about the geometric center of the door 2.

[0073] By setting the number of locking components 5 to two sets, the door 2 can be locked from both the top and bottom, thereby achieving the goal of further improving the safety of the high and low temperature test chamber for lithium battery modules.

[0074] Reference Figure 1 A locking lever 6 is slidably installed on the outer side of the door 2. There are two sets of locking levers 6. The two sets of locking levers 6 are distributed parallel to each other vertically. The locking levers 6 are slidably installed on the door 2 in the horizontal direction. A lock head is provided at the corresponding position on the body 1 to limit the locking lever 6. When the locking lever 6 slides into the lock head, the door 2 and the body 1 are locked.

[0075] By installing a locking rod 6 on the outside of the door 2, the load-bearing capacity of the door 2 after it is locked can be further improved, and the door 2 can be prevented from deforming and cracking due to the impact caused by thermal runaway or explosion of the lithium battery module. This is beneficial to improving the safety of the high and low temperature test chamber for lithium battery modules.

[0076] Reference Figure 1 and Figure 2 A control panel 7 is located on one side of the enclosure 1. The control panel 7 includes a touch screen and has a built-in control circuit for controlling the enclosure 1. A pressure sensor 8 is also located on the top of the enclosure 1. The pressure sensor 8 is electrically connected to the control panel 7 and can convert the pressure signal inside the enclosure 1 into an electrical signal and transmit it to the control panel 7 for display on the touch screen.

[0077] By installing a control panel 7 and a pressure sensor 8 on the chamber 1, personnel can easily monitor the pressure inside the chamber 1 and operate it according to the actual situation, thus improving the ease of use and safety of the lithium battery module high and low temperature test chamber.

[0078] Reference Figure 1 and Figure 2 The top of the housing 1 is equipped with a pressure relief valve 9, the two ends of which are connected to the sealed space enclosed by the housing 1 and the door 2, and to the outside. When the air pressure inside the housing 1 is too high, the pressure relief valve 9 can be used to release the pressure and reduce the gas pressure inside the housing 1.

[0079] By installing a pressure relief valve 9 on the top of chamber 1, personnel can easily reduce the gas pressure inside chamber 1, thus improving the safety of high and low temperature test operations.

[0080] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A high and low temperature test chamber for lithium battery modules, characterized in that: Including the enclosure; The door is hinged to the box body and can form a sealed space with the box body; A sealing strip is detachably installed on the edge of the cabinet door that is not hinged to the cabinet body; A limiting component is detachably mounted on the door and the sealing strip to limit the movement of the door and the sealing strip.

2. The high and low temperature test chamber for lithium battery modules according to claim 1, characterized in that: The limiting component includes a sleeve; The locking block is slidably disposed on the inner wall of the sleeve, and the sliding direction is perpendicular to the axial direction of the sleeve; A pin is slidably disposed on the sleeve, and the sliding direction is parallel to the axial direction of the sleeve; The pin has a clearance groove, and the door has a limit groove. After the pin slides relative to the sleeve, it presses the locking block located in the clearance groove into the limit groove to achieve locking.

3. The high and low temperature test chamber for lithium battery modules according to claim 2, characterized in that: A reset spring is provided in the limiting groove. When the locking block enters the limiting groove, the reset spring is in a compressed state.

4. The high and low temperature test chamber for lithium battery modules according to claim 3, characterized in that: The locking blocks are configured as a plurality of blocks evenly distributed along the circumference of the sleeve, and the limiting grooves are configured as a plurality of blocks corresponding one-to-one with the locking blocks.

5. The high and low temperature test chamber for lithium battery modules according to claim 1, characterized in that: The door is provided with an installation groove on the edge that is not hinged to the box body, and the sealing strip is snapped into the installation groove.

6. The high and low temperature test chamber for lithium battery modules according to claim 1, characterized in that: The cabinet door is equipped with a locking mechanism; The locking assembly includes a insert plate that is slidably mounted on the door. A locking spring, one end of which is connected to the cabinet door and the other end of which abuts against the insert plate, causing the insert plate to have a tendency to slide away from the cabinet door; The traction component has one end connected to the insert plate and the other end extending to the outside of the box door.

7. The high and low temperature test chamber for lithium battery modules according to claim 6, characterized in that: The locking components are configured in two sets and are symmetrically distributed about the geometric center of the door.

8. The high and low temperature test chamber for lithium battery modules according to claim 1, characterized in that: A locking bar is slidably provided on the outside of the box door; The locking rods are configured as two sets that are parallel to each other vertically.

9. The high and low temperature test chamber for lithium battery modules according to claim 1, characterized in that: A control panel is provided on one side of the enclosure, and a pressure sensor is provided on the top of the enclosure. The pressure sensor is electrically connected to the control panel.

10. The high and low temperature test chamber for lithium battery modules according to claim 1, characterized in that: The top of the enclosure is equipped with a pressure relief valve, and the two ends of the pressure relief valve are respectively connected to the sealed space enclosed by the enclosure and the door and the outside.

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