Battery module shell and battery module
By incorporating a coolant delivery structure and a baffle structure within the battery module housing, the problem of uneven heat dissipation on the motherboard in liquid-cooled battery modules is resolved, resulting in more uniform temperature reduction and more efficient heat dissipation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG YUNCHUANG ZHIDA TECHNOLOGY CO LTD
- Filing Date
- 2025-04-16
- Publication Date
- 2026-05-08
AI Technical Summary
In liquid-cooled battery modules, there is an uneven heat dissipation problem on the motherboard, with the side closer to the sandwich panel cooling down faster and the side farther away from the sandwich panel cooling down slower.
Design a battery module housing with a coolant delivery structure and a baffle structure. The coolant flows from the second side to the first side of the battery module, with the outlet located on the second side. The baffle structure blocks the gap between the third and fourth sides, ensuring that the coolant flows through the battery module to the maximum extent and carries away heat.
It improves the heat dissipation of the battery module, achieves a more uniform temperature reduction, and enhances heat dissipation efficiency.
Smart Images
Figure CN224217532U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of liquid-cooled battery technology, specifically to a battery module housing and a battery module. Background Technology
[0002] Most liquid-cooled power modules utilize a sandwich panel for heat dissipation, with cooling pipes arranged within it to lower the panel's temperature. The sandwich panel is typically positioned to one side of the motherboard, using its low temperature to further reduce the motherboard's temperature. However, this approach results in uneven heat dissipation on the motherboard side of the battery module, where the temperature decreases faster than on the side further away from the sandwich panel. Utility Model Content
[0003] This utility model aims to solve one of the technical problems in related technologies to a certain extent. Therefore, this utility model provides a battery module housing and a battery module.
[0004] To achieve the above objectives, the present invention adopts the following technical solution: a battery module housing, comprising a housing, wherein a cavity for accommodating the battery module is provided inside the housing; the cavity includes a first side and a second side disposed opposite to each other, and a third side and a fourth side disposed opposite to each other; the first side of the cavity is provided with a liquid inlet and a liquid outlet, and further includes a coolant delivery structure and a baffle structure disposed in the cavity;
[0005] The coolant delivery structure has an inlet end communicating with the inlet port and an outlet end for discharging coolant into the chamber; the outlet end of the coolant delivery structure is located on the second side of the chamber, so that the coolant in the chamber flows from the second side of the chamber to the first side.
[0006] The baffle structures are respectively disposed on the third and fourth sides of the cavity, and the baffle structures are used to block the gaps between the battery module and the third and fourth sides of the cavity, respectively.
[0007] The application of this application has the following beneficial effects: A coolant delivery structure is provided, with the outlet of the coolant delivery structure and the outlet of the chamber located on the second and first sides of the chamber, respectively, so that the coolant flows from the second side of the chamber to the first side, passing through the motherboard of the battery module and then exiting the chamber; simultaneously, a baffle mechanism is provided to block the gaps between the battery module and the third and fourth sides of the chamber, respectively, allowing the coolant to flow through the battery module to the maximum extent, carrying away the heat of the battery module and improving the heat dissipation effect.
[0008] Optionally, the coolant delivery structure includes an inlet pipe and multiple outlet pipes. The first end of the inlet pipe forms the inlet end of the coolant delivery structure and is connected to the inlet port of the chamber. The second end of the inlet pipe is connected to the multiple outlet pipes respectively. The multiple outlet pipes are arranged at intervals along the height direction of the chamber, and each outlet pipe is provided with multiple outlet holes arranged at intervals along its length direction. The outlet holes form the outlet end of the coolant delivery structure.
[0009] Optionally, the inlet pipe includes a first pipe wall disposed on the inner wall of the first side of the chamber and a second pipe wall disposed on the inner wall of the fourth side of the chamber. The first pipe wall extends from the inlet to the fourth side of the chamber, and the second pipe wall extends from the first side of the chamber to the second side. The first pipe wall and the second pipe wall form an inlet flow channel with the inner wall of the chamber, and the inlet flow channel communicates with the inlet.
[0010] The outlet pipe includes a third pipe wall connected to the inner wall of the second side of the chamber, the third pipe wall extending from the fourth side of the chamber to the third side; the third pipe wall and the inner wall of the chamber form an outlet channel, the outlet channel is connected to the inlet channel, and the outlet hole is connected to the outlet channel and the chamber respectively.
[0011] Optionally, the baffle structure includes a first baffle disposed on the inner wall of the third side of the chamber and two second baffles disposed on the inner wall of the fourth side of the chamber. The two second baffles are respectively disposed on both sides of the second tube wall along the height direction of the chamber, and the second baffles extend along the length direction of the second tube wall.
[0012] Optionally, both the first baffle and the second baffle include a protrusion that protrudes away from the inner wall of the cavity and a connecting portion disposed on both sides of the protrusion. The connecting portion is fitted and connected to the inner wall of the cavity. The protrusion is provided with a plurality of hollow holes, which are used to balance the pressure on both sides of the protrusion.
[0013] Optionally, a fastening structure is also included, which is disposed at the bottom of the chamber and is used to detachably install the battery module in the chamber.
[0014] Optionally, the fastening structure includes multiple nut mounting posts, multiple fastening screws, and multiple buffer pads. The nut mounting posts are located at the bottom of the cavity and have threaded holes. The buffer pads are located on the nut mounting posts and have through holes corresponding to the threaded holes. Each fastening screw is used to pass through the through holes on the buffer pads one by one from the battery module when the battery module is installed in the inner cavity, and to be threadedly connected to the threaded holes of the nut mounting posts one by one.
[0015] Optionally, the housing includes a lower housing and a cover plate, the cover plate being sealed to the lower housing and together forming the cavity.
[0016] Optionally, the cover plate has a flat plate structure, and the lower housing includes a bottom plate and four side walls arranged around the bottom plate. The bottom plate, the four side walls, and the cover plate together form the chamber. The four side walls include a first side wall and a second side wall arranged opposite each other along the length direction of the bottom plate, and a third side wall and a fourth side wall arranged opposite each other along the width direction of the bottom plate. The liquid inlet and the liquid outlet are both located on the outer side of the first side wall, and the liquid outlet of the coolant delivery structure is located on the inner side of the second side wall. The baffle structure is located on the inner side of the third side wall and the fourth side wall.
[0017] A second aspect of this utility model provides a battery module, including a battery module housing as provided in the first aspect of this utility model and a battery module disposed inside the battery module housing.
[0018] These features and advantages of this utility model will be disclosed in detail in the following specific embodiments and accompanying drawings. The preferred embodiments or means of this utility model will be shown in detail in conjunction with the accompanying drawings, but are not intended to limit the technical solutions of this utility model. In addition, each of these features, elements and components appearing in the following text and drawings is multiple and is labeled with different symbols or numbers for convenience, but all represent parts with the same or similar structure or function. Attached Figure Description
[0019] The present invention will be further described below with reference to the accompanying drawings:
[0020] Figure 1 This is a schematic diagram of the internal structure of this utility model (excluding the top plate and side plates).
[0021] Figure 2 This is a perspective view of the present invention.
[0022] Figure 3 This is a schematic diagram of the structure of the first blocking part and the second blocking part in this utility model.
[0023] Figure 4 This is a schematic diagram of the coolant channel in this utility model.
[0024] Figure 5 This is a schematic diagram of the structure of the battery cell assembly of this utility model (top plate removed).
[0025] Figure 6 This is a schematic diagram of the internal structure of the battery pack of this utility model.
[0026] Figure 7 for Figure 6 A magnified view of a portion of point A in the middle.
[0027] Among them, 10 is the chamber; 11 is the liquid inlet; 12 is the liquid outlet; 13 is the lower housing; 14 is the cover plate; 21 is the liquid inlet pipe; 211 is the first pipe wall; 212 is the second pipe wall; 22 is the liquid outlet pipe; 221 is the liquid outlet hole; 31 is the first baffle; 311 is the connecting part; 312 is the protrusion; 3121 is the hollow hole; 32 is the second baffle; 41 is the nut mounting post; 42 is the buffer pad; 43 is the fastening screw; and 50 is the battery module. Detailed Implementation
[0028] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described are intended to explain this utility model and should not be construed as limiting it.
[0029] The terms "an embodiment," "example," or "trademark" used in this specification refer to a particular feature, structure, or characteristic described in connection with the embodiment itself that may be included in at least one embodiment disclosed in this patent. The phrase "in an embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment.
[0030] like Figures 1-7 As shown, the first aspect of this utility model provides a battery module housing, including a housing, and a chamber 10 for accommodating the battery module is provided inside the housing; the chamber 10 includes a first side and a second side arranged opposite to each other, as well as a third side and a fourth side arranged opposite to each other; the first side of the chamber is provided with a liquid inlet 11 and a liquid outlet 12, and also includes a coolant delivery structure 20 and a baffle structure disposed in the chamber 10.
[0031] The coolant delivery structure 20 has an inlet end communicating with the inlet port 11 and an outlet end for discharging coolant into the chamber, the coolant being submerged in the battery module 50; the outlet end of the coolant delivery structure 20 is located on the second side of the chamber 10, such that the coolant in the chamber 10 flows from the second side of the chamber to the first side.
[0032] The baffle structures are respectively provided on the third and fourth sides of the chamber 10. The baffle structures are used to block the gap between the battery module and the third and fourth sides of the chamber 10 when the battery module 50 is installed in the chamber 10.
[0033] In this embodiment, the outlet end of the coolant delivery structure and the outlet of the chamber are located on the second and first sides of the chamber, respectively, so that the coolant flows from the second side of the chamber to the first side, passing through the motherboard of the battery module and then out of the chamber. At the same time, the baffle mechanism can block the gaps between the battery module and the third and fourth sides of the chamber, respectively, so that the coolant flows through the battery module to the maximum extent, carrying away the heat of the battery module and improving the heat dissipation effect.
[0034] In some embodiments, the coolant delivery structure includes an inlet pipe 21 and a plurality of outlet pipes 22. The first end of the inlet pipe 21 is formed as the inlet end of the coolant delivery structure 20 and is connected to the inlet port 11 of the chamber 10. The second end of the inlet pipe 21 is connected to the plurality of outlet pipes 22 respectively. The plurality of outlet pipes 22 are arranged at intervals along the height direction of the chamber 10, and each outlet pipe 22 is provided with a plurality of outlet holes 221 arranged at intervals along its length direction. The outlet holes 221 are formed as the outlet end of the coolant delivery structure 20.
[0035] In some embodiments, the inlet pipe 21 includes a first pipe wall 211 disposed on the inner wall of the first side of the chamber 10 and a second pipe wall 212 disposed on the inner wall of the fourth side of the chamber 10. The first pipe wall 211 extends from the inlet 11 toward the fourth side of the chamber 10, and the second pipe wall 212 extends from the first side of the chamber 10 toward the second side. The first pipe wall 211 and the second pipe wall 212 form an inlet flow channel with the inner wall of the chamber 10, and the inlet flow channel communicates with the inlet 11.
[0036] The outlet pipe 22 includes a third pipe wall connected to the second inner wall of the chamber 10. The third pipe wall extends from the fourth side of the chamber to the third side. The third pipe wall and the inner wall of the chamber form an outlet flow channel. The outlet flow channel is connected to the inlet flow channel, and the outlet hole 221 is connected to the outlet flow channel and the chamber 10 respectively.
[0037] In some embodiments, the baffle structure includes a first baffle 31 disposed on the inner wall of the third side of the chamber 10 and two second baffles 32 disposed on the inner wall of the fourth side of the chamber 10. The two second baffles 32 are respectively disposed on both sides of the second tube wall 212 along the height direction of the chamber 10, and the second baffles 32 extend along the length direction of the second tube wall 212.
[0038] In some embodiments, the first baffle 31 and the second baffle 32 both include a protrusion 312 protruding away from the inner wall of the chamber 10 and a connecting portion 311 disposed on both sides of the protrusion 312. The connecting portion 311 is in close contact with the inner wall of the chamber 10. Since the coolant will exert pressure on the protrusion 312, the baffle structure is easily damaged over time. Multiple hollow holes 3121 are provided on the protrusion 312. The coolant will flow from the high-pressure side to the low-pressure side through the hollow holes 3121 under pressure. The hollow holes 3121 are used to balance the pressure on both sides of the protrusion 312. In this embodiment, the shape of the hollow holes 3121 is not particularly limited. The shape of the hollow holes 3121 can be a long hole, a round hole, or a square hole. Multiple hollow holes 3121 are arranged in a matrix on the protrusion 312.
[0039] In some embodiments, a fastening structure is also included, disposed at the bottom of the chamber, for removably mounting the battery module within the chamber 10.
[0040] Specifically, such as Figure 6 and Figure 7 As shown, the fastening structure includes multiple nut mounting posts 41, multiple fastening screws 43, and multiple buffer pads 42. The nut mounting posts 41 are located at the bottom of the chamber 10 and have threaded holes. The buffer pads 42 are located on the nut mounting posts 41 and have through holes corresponding to the threaded holes. Each fastening screw 43 is used to pass through the through holes on the buffer pads 42 one by one from the battery module when it is installed in the chamber 10, and is threadedly connected to the threaded holes of the nut mounting posts 41 one by one. The buffer pads 42 can be polyurethane gaskets. The function of the polyurethane gaskets is to prevent deformation caused by pressure generated when the chamber is filled with coolant, which could affect the mainboard in the battery module.
[0041] In some embodiments, the housing includes a lower housing 13 and a cover plate 14, the cover plate 14 being sealed to the lower housing 13 and together forming a chamber 10.
[0042] In some embodiments, the cover plate 14 is a flat plate structure, and the lower housing 13 includes a bottom plate and four side walls arranged around the bottom plate. The bottom plate, the four side walls and the cover plate together form a chamber 10. The four side walls include a first side wall and a second side wall arranged opposite to each other along the length direction of the bottom plate, and a third side wall and a fourth side wall arranged opposite to each other along the width direction of the bottom plate. The liquid inlet 11 and the liquid outlet 12 are both arranged on the outer side of the first side wall, and the liquid outlet end of the coolant delivery structure 20 is arranged on the inner side of the second side wall. The baffle structure is arranged on the inner side of the third side wall and the fourth side wall.
[0043] A second aspect of this utility model provides a battery module, including a battery module housing as provided in the first aspect of this utility model and a battery module 50 disposed inside the battery module housing.
[0044] The above are merely specific embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Those skilled in the art should understand that this utility model includes, but is not limited to, the contents described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of this utility model will be included within the scope of the claims.
Claims
1. A battery module housing, comprising a housing, wherein a cavity (10) for accommodating a battery module is provided within the housing; the cavity (10) includes a first side and a second side disposed opposite to each other, and a third side and a fourth side disposed opposite to each other; the first side of the cavity is provided with an inlet (11) and an outlet (12), characterized in that, It also includes a coolant delivery structure (20) and a baffle structure disposed in the chamber (10); The coolant delivery structure (20) has an inlet end communicating with the inlet port (11) and an outlet end for discharging coolant into the chamber; the outlet end of the coolant delivery structure (20) is located on the second side of the chamber (10), so that the coolant in the chamber (10) flows from the second side of the chamber to the first side. The baffle structures are respectively disposed on the third and fourth sides of the cavity (10). The baffle structures are used to block the gap between the battery module and the third and fourth sides of the cavity (10) when the battery module is installed in the cavity (10).
2. The battery module housing according to claim 1, characterized in that, The coolant delivery structure includes an inlet pipe (21) and multiple outlet pipes (22). The first end of the inlet pipe (21) is formed as the inlet end of the coolant delivery structure (20). The first end of the inlet pipe (21) is connected to the inlet port (11) of the chamber (10). The second end of the inlet pipe (21) is connected to multiple outlet pipes (22). The multiple outlet pipes (22) are arranged at intervals along the height direction of the chamber (10), and each outlet pipe (22) is provided with multiple outlet holes (221) arranged at intervals along its length direction. The outlet holes (221) are formed as the outlet end of the coolant delivery structure (20).
3. The battery module housing according to claim 2, characterized in that, The inlet pipe (21) includes a first pipe wall (211) disposed on the inner wall of the first side of the chamber (10) and a second pipe wall (212) disposed on the inner wall of the fourth side of the chamber (10). The first pipe wall (211) extends from the inlet (11) toward the fourth side of the chamber (10), and the second pipe wall (212) extends from the first side of the chamber (10) toward the second side. The first pipe wall (211) and the second pipe wall (212) form an inlet channel with the inner wall of the chamber (10), and the inlet channel communicates with the inlet (11). The outlet pipe (22) includes a third pipe wall connected to the inner wall of the second side of the chamber (10), the third pipe wall extending from the fourth side of the chamber to the third side; the third pipe wall and the inner wall of the chamber form an outlet flow channel, the outlet flow channel is connected to the inlet flow channel, and the outlet hole (221) is connected to the outlet flow channel and the chamber (10) respectively.
4. The battery module housing according to claim 3, characterized in that, The baffle structure includes a first baffle (31) disposed on the inner wall of the third side of the chamber (10) and two second baffles (32) disposed on the inner wall of the fourth side of the chamber (10). The two second baffles (32) are respectively disposed on both sides of the second tube wall (212) along the height direction of the chamber (10), and the second baffles (32) extend along the length direction of the second tube wall (212).
5. The battery module housing according to claim 4, characterized in that, Both the first baffle (31) and the second baffle (32) include a protrusion (312) protruding away from the inner wall of the chamber (10) and a connecting portion (311) disposed on both sides of the protrusion (312). The connecting portion is fitted and connected to the inner wall of the chamber. The protrusion (312) is provided with a plurality of hollow holes. The hollow holes (3121) are used to balance the pressure on both sides of the protrusion (312).
6. The battery module housing according to claim 1, characterized in that, It also includes a fastening structure disposed at the bottom of the chamber, the fastening structure being used to detachably install the battery module within the chamber (10).
7. The battery module housing according to claim 6, characterized in that, The fastening structure includes multiple nut mounting posts (41), multiple fastening screws (43), and multiple buffer pads (42). The nut mounting posts (41) are located at the bottom of the chamber (10) and have threaded holes. The buffer pads (42) are located on the nut mounting posts (41) and have through holes corresponding to the threaded holes. Each fastening screw (43) is used to pass through the through holes on the buffer pads (42) one by one from the battery module when the battery module is installed in the chamber (10) and to be threadedly connected to the threaded holes of the nut mounting posts (41) one by one.
8. The battery module housing according to any one of claims 1-7, characterized in that, The housing includes a lower housing (13) and a cover plate (14), the cover plate (14) being sealed to the lower housing (13) and together forming the chamber (10).
9. The battery module housing according to claim 8, characterized in that, The cover plate (14) is a flat plate structure. The lower box (13) includes a bottom plate and four side walls arranged around the bottom plate. The bottom plate, the four side walls and the cover plate together form the chamber (10). The four side walls include a first side wall and a second side wall arranged opposite to each other along the length direction of the bottom plate, and a third side wall and a fourth side wall arranged opposite to each other along the width direction of the bottom plate. The liquid inlet (11) and the liquid outlet (12) are both arranged on the outside of the first side wall. The liquid outlet of the coolant delivery structure (20) is arranged on the inside of the second side wall. The baffle structure is arranged on the inside of the third side wall and the fourth side wall.
10. A battery module, characterized in that, Includes the battery module housing as described in any one of claims 1-9 and the battery module (50) housed inside the battery module housing.