A detection device, a battery module and an energy storage system
Patent Information
- Application Number
- CN202522551723.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-01
- Publication Date
- 2026-10-09
- Estimated Expiration
- 2035-12-01
AI Technical Summary
[0002]目前储能液系统在储能行业被广泛应用，为了保证电池在适宜的温度下运行，以充分发挥电池的性能，通常采用浸没式液冷方式对壳体内的电池进行冷却，然而，随着时间的推移，冷却液可能因漏液或挥发导致液位降低，进而对电芯散热与电性能稳定造成不良影响
[0015]本实用新型实施例的有益效果是：区别于现有技术的情况，本实用新型实施例的检测装置包括壳体、导电支撑杆、浮块、导电组件和检测组件，壳体设置有滑动腔和第一开口，第一开口与滑动腔连通，导电支撑杆设置于滑动腔，并且导电支撑杆可沿第一方向滑动，导电支撑杆包括沿第一方向依次连接的第一部分和第二部分,第二部分远离第一部分的一端从滑动腔的一端伸出，沿第二方向，第二部分的截面的面积小于第一部分的截面的面积，第一方向与第二方向垂直，浮块与第二部分伸出于滑动腔的一端，导电组件包括两个导电件，检测组件分别与两个导电件连接，两个导电件间隔设置于壳体，两个导电件至少部分伸入所述滑动腔，具体的，当浮块位于第一位置时，沿第二方向，两个导电件与第一部分对齐，两个导电件均抵接于第一部分，检测组件检测到两个导电件处于导通状态，当浮块向滑动腔的另一端滑动至第二位置时，沿第二方向，两个导电件与第二部分对齐，两个导电件至少一个与导电支撑杆分离，检测组件检测到两个导电件处于断开状态，反而言之，通过检测到两个导电件的通断，可以确定电池模块内冷却液的液位状态，非常方便。
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Figure CN224839079U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of energy storage technology, and in particular to a detection device, a battery module, and an energy storage system. Background Technology
[0002] Currently, energy storage fluid systems are widely used in the energy storage industry. In order to ensure that the battery operates at a suitable temperature and fully utilize its performance, immersion liquid cooling is usually used to cool the battery inside the casing. However, over time, the coolant may leak or evaporate, causing the liquid level to drop, which in turn has an adverse effect on the heat dissipation of the battery cells and the stability of electrical performance.
[0003] In the process of developing this utility model, the inventors discovered that: currently, energy storage fluid systems lack dedicated coolant detection devices. Usually, a window is opened in the casing, and workers determine whether the coolant is insufficient by observation, which is very troublesome. Utility Model Content
[0004] The main technical problem solved by this utility model embodiment is to provide a detection device, a battery module, and an energy storage system that can be used to detect the liquid level of the battery module coolant without the need for manual observation of the coolant status, which is very convenient.
[0005] To solve the above-mentioned technical problems, the present invention provides a detection device comprising a housing, a conductive support rod, a float, a conductive component, and a detection component. The housing has a sliding cavity and a first opening, the first opening communicating with the sliding cavity. The conductive support rod is disposed in the sliding cavity and is slidable along a first direction. The support rod includes a first part and a second part connected sequentially along the first direction. The end of the second part away from the first part extends from one end of the sliding cavity. Along the second direction, the cross-sectional area of the second part is smaller than that of the first part. The first direction is perpendicular to the second direction. The float extends from the second part... At one end of the sliding cavity, the conductive component includes two conductive elements, which are spaced apart from each other in the housing. At least part of the two conductive elements extend into the sliding cavity. When the float is in the first position, along the second direction, the two conductive elements are aligned with the first part and both conductive elements abut against the first part, and the two conductive elements are in a conductive state. When the float slides to the other end of the sliding cavity to the second position, along the second direction, the two conductive elements are aligned with the second part, at least one of the two conductive elements is separated from the conductive support rod, and the two conductive elements are in a disconnected state. The detection component is connected to the two conductive elements respectively, and the detection component is used to detect whether the two conductive elements are in a disconnected or conductive state.
[0006] Optionally, the housing is provided with two mounting holes, which are spaced apart along a first direction, and a conductive element is mounted in one mounting hole.
[0007] Optionally, the conductive component includes a conductive shell, a conductive needle, and an elastic element. The conductive shell is provided with a mounting cavity and a through-hole. The through-hole connects to the mounting cavity. One end of the elastic element is fixed to the bottom of the mounting cavity, and the other end of the elastic element is connected to one end of the conductive needle. The other end of the conductive needle extends out from the through-hole and is used to abut against the first part.
[0008] Optionally, a limiting portion extends from the sidewall of one end of the conductive needle, which abuts against the inner wall of the mounting cavity on the opening side to limit the maximum outward stroke of the conductive needle.
[0009] Optionally, the limiting part is arranged around the conductive needle.
[0010] Optionally, the outer wall of the housing is provided with a first groove, the first opening is located at the bottom of the first groove, and the detection device also includes a first linear bearing, the first linear bearing is fixed in the first groove, and the first linear bearing is sleeved on the second part.
[0011] Optionally, the housing is also provided with a second opening, which communicates with the sliding cavity. The support rod includes a third part, and the third part, the first part, and the second part are connected in sequence along the first direction. The third part extends out from the second opening.
[0012] Optionally, the outer wall of the housing is provided with a second groove, the second opening is located at the bottom of the second groove, and the detection device also includes a second linear bearing, which is fixed to the second groove and fitted with the third part.
[0013] To solve the above-mentioned technical problems, another technical solution adopted by this utility model is: to provide a battery module, characterized in that it includes a battery shell, a plurality of battery cells, an insulating coolant and the above-mentioned detection device, wherein the insulating coolant and the plurality of battery cells are both disposed inside the battery shell, the plurality of battery cells are at least partially immersed in the insulating coolant, and the detection device is disposed in the shell, the detection device being used to detect the liquid level of the insulating coolant.
[0014] To solve the above-mentioned technical problems, another technical solution adopted by this utility model is to provide an energy storage system, including the above-mentioned battery module.
[0015] The beneficial effects of this utility model embodiment are as follows: Unlike the prior art, the detection device of this utility model embodiment includes a housing, a conductive support rod, a float, a conductive component, and a detection component. The housing is provided with a sliding cavity and a first opening, the first opening communicating with the sliding cavity. The conductive support rod is disposed in the sliding cavity and can slide along a first direction. The conductive support rod includes a first part and a second part connected sequentially along the first direction. The end of the second part away from the first part extends from one end of the sliding cavity. Along the second direction, the cross-sectional area of the second part is smaller than the cross-sectional area of the first part. The first direction is perpendicular to the second direction. The float and the second part extend out from one end of the sliding cavity. The conductive component includes two conductive... The electrical components and the detection assembly are respectively connected to two conductive components. The two conductive components are spaced apart in the housing and at least partially extend into the sliding cavity. Specifically, when the float is in the first position, along the second direction, the two conductive components are aligned with the first part and both conductive components abut against the first part. The detection assembly detects that the two conductive components are in a conductive state. When the float slides to the other end of the sliding cavity to the second position, along the second direction, the two conductive components are aligned with the second part, and at least one of the two conductive components is separated from the conductive support rod. The detection assembly detects that the two conductive components are in a disconnected state. Conversely, by detecting the continuity of the two conductive components, the liquid level of the coolant in the battery module can be determined, which is very convenient. Attached Figure Description
[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the drawings without creative effort.
[0017] Figure 1 This is a perspective view of the detection device according to an embodiment of the present invention; Figure 2 This is an exploded view of the detection device according to an embodiment of the present invention; Figure 3 This is a bottom view of the housing according to an embodiment of the present utility model; Figure 4 This is a top view of the housing according to an embodiment of the present utility model. Detailed Implementation
[0018] To facilitate understanding of this utility model, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as being "connected" to another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this specification are for illustrative purposes only.
[0019] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.
[0020] Please see Figure 2 The detection device includes a housing 1, a conductive support rod 2, a float 3, a conductive component 4, a detection component (not shown), a first linear bearing 5, and a second linear bearing 6. The conductive support rod 4 is disposed on the housing 1 and can slide along a first direction. One end of the conductive support rod 4 extends from one end of the housing 1. The float 3 is disposed on one end of the conductive support rod 2. The conductive component 4 is disposed on the housing 1 and extends at least partially into the housing 1. When the float 3 is in the first position, the conductive component 4 abuts against the conductive support rod 2 and is in a conductive state. When the float 3 pushes the conductive support rod 2 to slide to the other end of the housing 1 to the second position, the conductive component 4 separates from the conductive support rod 2 and is in a disconnected state. The detection component is connected to the conductive component 4 and is used to detect whether the conductive component 4 is in a disconnected or conductive state. In addition, the first linear bearing 5 and the second linear bearing 6 are fixed to the housing 1, and the first linear bearing 5 and the second linear bearing 6 are sleeved on the conductive support rod 2. The first linear bearing 5 and the second linear bearing 6 are used to reduce the friction system of the conductive support rod 2 sliding relative to the housing 1, which is beneficial to the sliding of the conductive support rod 2. The first linear bearing 5 and the second linear bearing 6 are also used to restrict the conductive support rod 2 to slide only in the first direction.
[0021] For housing 1 mentioned above, please refer to... Figure 3 and Figure 4 The housing 1 is provided with a sliding cavity 11, a first opening 12 and a second opening 13. The first opening 12 is located at one end of the sliding cavity 11 and the second opening 13 is located at the other end of the sliding cavity 11. Both the first opening 12 and the second opening 13 are connected to the sliding cavity 11. The direction from the first opening 12 to the second opening 13 is the first direction.
[0022] The side wall of the housing 1 is provided with two mounting holes 14, which are spaced apart along the first direction. The two mounting holes 14 are used to install the conductive component 4.
[0023] In some embodiments, the outer wall of the housing 1 is provided with a first groove 15 and a second groove 16, a first opening 12 is located at the bottom of the first groove 15, a second opening 13 is located at the bottom of the second groove 16, a first linear bearing 5 is fixed to the first groove 15, and a second linear bearing 6 is fixed to the second groove 16.
[0024] For the conductive support rod 2 mentioned above, please refer to... Figure 2 The conductive support rod 2 includes a second part 22, a first part 21, and a third part 23 connected sequentially along a first direction. The end of the second part 22 away from the first part 21 is fitted into a first linear bearing 5, and the end of the second part 22 away from the first part 21 extends out from a first opening 12. The end of the third part 23 away from the first part 21 is fitted into a second linear bearing 6, and the end of the third part 23 away from the first part 21 extends out from a second opening 13. Along a second direction, the cross-sectional area of the second part 22 is smaller than the cross-sectional area of the first part 21. The first direction is perpendicular to the second direction. The float 3 is connected to the end of the second part 22 that extends out of the sliding cavity 11.
[0025] The conductive component 4 described above includes two conductive elements 41. One conductive element 41 is mounted in a mounting hole 14, such that the two conductive elements 41 are spaced apart from each other in the housing 1. At least partially, both conductive elements 41 extend into the sliding cavity 11. When the float 3 is in the first position, along the second direction, the two conductive elements 41 are aligned with the first portion 21, and both conductive elements 41 abut against the first portion 21, indicating that the two conductive elements 41 are in a conductive state. When the float 3 slides to the other end of the sliding cavity 11 to the second position, along the second direction, the two conductive elements 41 are aligned with the second portion 22, and at least one of the two conductive elements 41 is separated from the conductive support rod 2, indicating that the two conductive elements 41 are in a disconnected state.
[0026] In some embodiments, the conductive element 41 includes a conductive shell 411, a conductive needle 412, and an elastic element 413. The conductive shell 411 is provided with a mounting cavity (not shown) and a through-hole 4111. The through-hole 4111 communicates with the mounting cavity. One end of the elastic element 413 is fixed to the bottom of the mounting cavity, and the other end of the elastic element 413 is connected to one end of the conductive needle 412. The other end of the conductive needle 412 extends out from the through-hole 4111. When the conductive element 41 is installed in the mounting hole 14, the other end of the conductive needle 412 extends into the sliding cavity 11, and the other end of the conductive needle 412 is used to abut against the first part 21.
[0027] Specifically, when the liquid level is high, the float 3 is at a high position due to buoyancy. The float 3 drives the conductive support rod 2 upward, and the conductive element 41 in the sliding cavity 11 aligns with the first part 21 of the conductive support rod 2. At this time, both conductive needles 412 abut against the first part 21 under the action of the elastic element 413, forming an electrical connection through the conductive support rod 2. The detection component outputs a normal liquid level signal. When the liquid level drops, the float 3 drives the conductive support rod 2 to slide along the first direction towards the other end of the sliding cavity 11. When the float 3 reaches the second position, the conductive element 41 aligns with the second part 22 of the conductive support rod 2, at least one conductive needle 412 separates from the second part 22, the electrical connection between the two conductive elements 41 is broken, and the detection component outputs a low liquid level signal. In short, the liquid level can be detected by the signal output by the detection component.
[0028] It is worth noting that in some embodiments, the detection component includes a detection power supply, a current-limiting resistor, and a current detection unit. The current-limiting resistor is connected to the positive terminal of the detection power supply and a conductive component, respectively. The negative terminal of the detection power supply is connected to another conductive component. The current detection unit is connected to the connection between the negative terminal of the detection power supply and the other conductive component. The current detection unit is used to determine whether the two conductive components are in an open or closed state by detecting whether there is current flowing through the connection between the negative terminal of the detection power supply and the other conductive component.
[0029] Furthermore, a limiting portion 4121 extends from the sidewall of one end of the conductive needle 412. The limiting portion 4121 abuts against the inner wall of the mounting cavity on the opening side to limit the maximum outward stroke of the conductive needle 412. In some embodiments, the limiting portion 4121 is disposed around the conductive needle 412. When the elastic member 413 pushes the conductive needle 412, the limiting portion 4121 can abut against the edge of the opening 4111 of the mounting cavity to prevent the conductive needle 412 from dislodging from the opening 4111.
[0030] It is understood that in some embodiments, the mounting hole 14 may not be provided, and the two conductive elements 41 may be directly disposed at intervals along the first direction on the inner wall of the housing 1.
[0031] In this embodiment of the invention, the detection device includes a housing 1, a conductive support rod 2, a float 3, a conductive assembly 4, and a detection assembly. The housing 1 is provided with a sliding cavity 11 and a first opening 12, the first opening 12 communicating with the sliding cavity 11. The conductive support rod 2 is disposed in the sliding cavity 11 and is slidable along a first direction. The conductive support rod 2 includes a first part 21 and a second part 22 connected sequentially along the first direction. The end of the second part 22 away from the first part 21 extends from one end of the sliding cavity 11. Along the second direction, the cross-sectional area of the second part 22 is smaller than the cross-sectional area of the first part 21. The first direction is perpendicular to the second direction. The float 3 and the second part 22 extend out from one end of the sliding cavity 11. The conductive assembly 4 includes two conductive elements 41. The detection assembly respectively... The device is connected to two conductive elements 41, which are spaced apart on the housing 1. At least part of the two conductive elements 41 extend into the sliding cavity 11. Specifically, when the float 3 is in the first position, the two conductive elements 41 are aligned with the first part 21 along the second direction, and both conductive elements 41 abut against the first part 21. The detection component detects that the two conductive elements 41 are in a conductive state. When the float 3 slides to the other end of the sliding cavity 11 to the second position, the two conductive elements 41 are aligned with the second part 22 along the second direction, and at least one of the two conductive elements 41 is separated from the conductive support rod 2. The detection component detects that the two conductive elements 41 are in a disconnected state. Conversely, by detecting the continuity of the two conductive elements 41, the liquid level of the coolant in the battery module can be determined, which is very convenient.
[0032] This utility model also provides a battery module embodiment. The battery module includes a battery casing, several battery cells, insulating coolant, and the aforementioned detection device. The insulating coolant and several battery cells are both disposed inside the battery casing. At least some of the several battery cells are immersed in the insulating coolant. The detection device is disposed in the casing and is used to detect the liquid level of the insulating coolant. For the structure and function of the detection device, please refer to the above embodiment, which will not be repeated here.
[0033] In some embodiments, the battery module may further include a controller and a communication module. The controller is connected to the detection device and the communication module respectively. When the detection device outputs a low liquid level signal, the controller sends an alarm signal to the communication device of the external staff, such as a mobile phone or tablet computer, so that the external staff can add insulating coolant to the battery module in a timely manner.
[0034] This utility model also provides an embodiment of an energy storage system, which includes the battery module described above. The structure and function of the battery module can be found in the above embodiment, and will not be described in detail here.
[0035] It should be noted that while the preferred embodiments of this utility model are provided in the specification and accompanying drawings, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are not intended to impose additional limitations on the content of this utility model; their purpose is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Furthermore, the above-described technical features can be combined with each other to form various embodiments not listed above, all of which are considered to be within the scope of this utility model specification. Moreover, those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.
Claims
1. A detection device, characterized in that, include: The housing has a sliding cavity and a first opening, the first opening being in communication with the sliding cavity; A conductive support rod is disposed in the sliding cavity, and the conductive support rod can slide along a first direction. The conductive support rod includes a first part and a second part connected in sequence along the first direction. The end of the second part away from the first part extends out from the first opening. Along the second direction, the cross-sectional area of the second part is smaller than the cross-sectional area of the first part. The first direction is perpendicular to the second direction. A float, wherein the float is connected to one end of the second portion that extends out of the sliding cavity; A conductive component includes two conductive elements, each of which extends at least partially into the sliding cavity. When the float is in a first position, the two conductive elements are aligned with the first portion along a second direction, and both conductive elements abut against the first portion, indicating that the two conductive elements are in a conductive state. When the float slides to the other end of the sliding cavity to a second position, the two conductive elements are aligned with the second portion along the second direction, and at least one of the two conductive elements is separated from the conductive support rod, indicating that the two conductive elements are in a disconnected state. A detection component is connected to the two conductive components respectively, and the detection component is used to detect whether the two conductive components are in an open or closed state.
2. The detection device according to claim 1, characterized in that, The housing is provided with two mounting holes, which are spaced apart along a first direction, and one of the conductive components is mounted in one mounting hole.
3. The detection device according to claim 2, characterized in that, The conductive component includes a conductive shell, a conductive needle, and an elastic element. The conductive shell is provided with a mounting cavity and a through-hole. The through-hole communicates with the mounting cavity. One end of the elastic element is fixed to the bottom of the mounting cavity, and the other end of the elastic element is connected to one end of the conductive needle. The other end of the conductive needle extends out from the through-hole and is used to abut against the first part.
4. The detection device according to claim 3, characterized in that, A limiting portion extends from the sidewall of one end of the conductive needle. The limiting portion abuts against the inner wall of the mounting cavity on the opening side to limit the maximum outward stroke of the conductive needle.
5. The detection device according to claim 4, characterized in that, The limiting portion is arranged around the conductive needle.
6. The detection device according to claim 1, characterized in that, The outer wall of the shell is provided with a first groove, and the first opening is located at the bottom of the first groove; The detection device further includes a first linear bearing, which is fixed to the first groove and sleeved on the second part.
7. The detection device according to claim 1, characterized in that, The housing is also provided with a second opening, which communicates with the sliding cavity; The support rod includes a third part, and the third part, the first part, and the second part are connected sequentially along the first direction, with the third part extending out from the second opening.
8. The detection device according to claim 7, characterized in that, The outer wall of the housing is provided with a second groove, and the second opening is located at the bottom of the second groove; The detection device further includes a second linear bearing, which is fixed to the second groove and sleeved on the third part.
9. A battery module, characterized in that, The device includes a battery casing, a plurality of battery cells, an insulating coolant, and a detection device as described in any one of claims 1-8. The insulating coolant and the plurality of battery cells are disposed within the battery casing, and the plurality of battery cells are at least partially immersed in the insulating coolant. The detection device is disposed within the casing and is used to detect the level of the insulating coolant.
10. An energy storage system, characterized in that, Includes the battery module as described in claim 9.