A secure mountable pulse resistor

Abstract

The utility model belongs to new energy automobile battery technical field, concretely relates to a kind of firmly installed pulse resistor, including the pulse resistor of cylindrical shape, still additionally be provided with the recessed groove-shaped mounting shell, the mounting point position for the pulse resistor fixation is provided in the slot cavity of mounting shell, the pulse resistor is connected with base by mounting shell.This utility model is connected with base by the mounting shell of additional realization pulse resistor, so that mounting shell and the combination of cylindrical pulse resistor have high pulse energy and excellent anti-vibration performance.

Description

Technical Field

[0001] This utility model belongs to the field of new energy vehicle battery technology, specifically relating to a pulse resistor that can be securely installed. Background Technology

[0002] In the field of new energy vehicles, the battery system, as a core component, directly affects the vehicle's power output, range, and safety. The pulse resistor, as a key component in the battery management system, undertakes important functions such as current regulation, voltage sampling, and overload protection.

[0003] Currently, mainstream pulse resistors on the market are divided into two types: cylindrical and block-shaped, which differ significantly in performance and installation methods. Cylindrical pulse resistors have the advantage of high pulse energy tolerance. They are typically fixed by clamping both ends with two sets of bolts; however, these bolts can loosen over long-term use, resulting in a less secure fixation and poorer vibration resistance. Block-shaped pulse resistors, while allowing for lower impact energy, exhibit good stability in vibration environments due to their planar structure and direct bolt connection to the base. Because new energy vehicle batteries generate strong vibrations during operation, the vibration resistance requirements for pulse resistors are high, thus block-shaped pulse resistors are typically chosen.

[0004] However, with market development and increasing customer demands for battery performance, block pulse resistors are struggling to meet the technological requirements of new energy vehicles moving towards higher energy density and higher power output. For example, under conditions such as fast charging and rapid acceleration, block pulse resistors may suffer overload damage due to insufficient pulse energy, leading to the failure of battery system protection functions.

[0005] Therefore, how to overcome the technical bottleneck of installation stability while retaining the high pulse energy advantage of cylindrical pulse resistors has become a key issue that urgently needs to be addressed in the field of new energy batteries. Utility Model Content

[0006] To address the problems existing in the prior art, this utility model provides a pulse resistor that can be securely installed. By means of an added mounting housing, a secure connection between the pulse resistor and the base is achieved, so that the combination of the mounting housing and the cylindrical pulse resistor has both high pulse energy and excellent vibration resistance.

[0007] The specific technical solution adopted in this utility model is as follows:

[0008] A securely mounted pulse resistor includes a cylindrical pulse resistor and a grooved mounting housing. The groove of the mounting housing has mounting points for fixing the pulse resistor, and the pulse resistor is connected to a base by means of the mounting housing.

[0009] A fixing seat is provided in the groove cavity of the mounting housing. The fixing seat includes multiple C-shaped clamps. The closed side of the clamps is fixedly connected to the bottom of the groove of the mounting housing, and the open side of the clamps forms the mounting point of the mounting housing and engages with the pulse resistor.

[0010] The pulse resistor has annular limiting protrusions at both ends. The first-stage clamping plate and the last-stage clamping plate of the fixing base clamp the pulse resistor and abut against the limiting protrusions at both ends of the pulse resistor. The limiting protrusions prevent the pulse resistor from moving in the horizontal direction.

[0011] The sidewall of the clamp plate with the opening side is provided with raised friction textures. The direction of the friction textures is parallel to the axial direction of the pulse resistor. The friction textures prevent the pulse resistor from moving in the vertical direction.

[0012] The mounting housing has multiple sets of fixing seats inside its cavity, and multiple pulse resistors can be fixedly installed inside the mounting housing by means of these multiple sets of fixing seats.

[0013] The mounting housing is also provided with a cover plate, which is located on the opening side of the mounting housing and is detachably connected to the mounting housing. The cover plate is provided with multiple through holes for the pins of the pulse resistor to pass through.

[0014] The top of the mounting housing is provided with an upwardly protruding mounting part, and both sides of the mounting part are provided with male buckles protruding in the horizontal direction. Both sides of the cover plate are provided with mounting grooves that mate with the mounting part. The inner wall of the mounting groove is provided with female buckles that mate with the male buckles. The cover plate and the mounting housing are detachably engaged by means of the male buckles and female buckles.

[0015] The bottom of the mounting housing is provided with a skirt, and the skirt is provided with mounting holes for bolts to pass through. The mounting housing is detachably bolted to the base by means of bolts.

[0016] The beneficial effects of this utility model are:

[0017] 1. This utility model adds a mounting housing, which achieves a firm connection between the pulse resistor and the base. Compared with the traditional mounting method of cylindrical pulse resistors, the mounting housing in this utility model changes the cylindrical pulse resistor from "point fixing" to "surface fixing". The mounting housing provides a larger clamping area for the cylindrical pulse resistor, improving the clamping firmness of the pulse resistor. While retaining the advantage of the high pulse energy tolerance of the cylindrical pulse resistor, the mounting housing achieves a stable installation similar to a block-shaped pulse resistor, significantly improving the vibration resistance of the pulse resistor. This makes the combination of the mounting housing and the cylindrical pulse resistor have both high pulse energy and excellent vibration resistance.

[0018] 2. The C-shaped clamp in this utility model can hold the pulse resistor. Since the clamp is made of ABS plastic, it has a certain plasticity. With a large force, the pulse resistor can be pressed into the C-shaped groove of the clamp to complete the installation. After installation, since the width of the opening side of the clamp is smaller than the diameter of the pulse resistor, the pulse resistor is difficult to detach along the opening side of the clamp, thus forming a firm clamping connection. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a top view of the structure of this utility model;

[0021] Figure 3 for Figure 2 A cross-sectional view along the AA direction;

[0022] Figure 4 for Figure 2 A cross-sectional structural diagram showing the installation of the housing and the base in the BB direction.

[0023] Figure 5 This is a schematic diagram of the cover plate.

[0024] Figure 6 This is a schematic diagram of the structure in which the cover plate mates with the mounting housing;

[0025] In the attached diagram, 1 is the pulse resistor, 2 is the mounting housing, 3 is the base, 4 is the clamping plate, 5 is the limiting protrusion, 6 is the friction texture, 7 is the cover plate, 8 is the male snap, 9 is the female snap, 10 is the skirt, 11 is the mounting hole, and 12 is the pin. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0027] Specific embodiments, such as Figure 1 As shown, this utility model provides a pulse resistor 1 that can be securely installed, including a cylindrical pulse resistor 1 and a grooved mounting housing 2. The groove of the mounting housing 2 is provided with mounting points for fixing the pulse resistor 1. The pulse resistor 1 is connected to the base 3 by means of the mounting housing 2.

[0028] With market development and increasing customer demands for battery performance, block-shaped pulse resistors (1) are struggling to meet the technological requirements of new energy vehicles moving towards higher energy density and higher power output. For example, under conditions such as fast charging and rapid acceleration, block-shaped pulse resistors (1) may suffer overload damage due to insufficient pulse energy, leading to the failure of battery system protection functions. Therefore, how to overcome the technical bottleneck of installation stability while retaining the high pulse energy advantage of cylindrical pulse resistors (1) has become a critical issue that urgently needs to be addressed in the new energy battery field.

[0029] Therefore, this invention adds a mounting housing 2, which connects the pulse resistor 1 to the base 3 through mounting points. Since the mounting housing 2 and base 3 are firmly fixed with bolts, and the mounting points of the mounting housing 2 form a snap-fit ​​connection with the pulse resistor 1, the pulse resistor 1 can be firmly installed on the base 3 by means of the restraint of the mounting housing 2 when the battery vibrates. Compared with the traditional installation method of the cylindrical pulse resistor 1, the mounting housing 2 in this invention changes the cylindrical pulse resistor 1 from "point fixing" to "surface fixing". The mounting housing 2 provides a larger clamping area for the cylindrical pulse resistor 1, improving the clamping firmness of the pulse resistor 1. While retaining the advantage of the high pulse energy tolerance of the cylindrical pulse resistor 1, the mounting housing 2 achieves a stable installation similar to a block-shaped pulse resistor 1, significantly improving the vibration resistance of the pulse resistor 1. This combination of the mounting housing 2 and the cylindrical pulse resistor 1 possesses both high pulse energy and excellent vibration resistance.

[0030] like Figure 1-4 As shown, a fixing seat is provided in the groove cavity of the mounting housing 2. The fixing seat includes a plurality of C-shaped clamping plates 4. The closed side of the clamping plate 4 is fixedly connected to the bottom of the groove of the mounting housing 2, and the open side of the clamping plate 4 forms the mounting point of the mounting housing 2 and engages with the pulse resistor 1.

[0031] Firstly, the C-shaped clamping plate 4 can hold the pulse resistor 1. Since the clamping plate 4 is made of ABS plastic, it has a certain degree of plasticity, allowing for the application of considerable force to press the pulse resistor 1 into the C-shaped groove of the clamping plate 4 for installation. After installation, because the width of the opening side of the clamping plate 4 is smaller than the diameter of the pulse resistor 1, ... Figure 3 As shown, the pulse resistor 1 is difficult to detach along the open side of the clamping plate 4, thus forming a firm clamping connection; secondly, the closed side of the clamping plate 4 is fixed to the bottom of the groove, forming a rigid support structure, so that the clamping plate 4 can maintain the clamping force even under high frequency vibration, ensuring its clamping firmness during long-term use.

[0032] like Figure 1-2As shown, the pulse resistor 1 has annular limiting protrusions 5 at both ends. The first-stage clamping plate 4 and the last-stage clamping plate 4 of the fixing base clamp the pulse resistor 1 and abut against the limiting protrusions 5 at both ends of the pulse resistor 1. The limiting protrusions 5 prevent the pulse resistor 1 from moving in the horizontal direction.

[0033] Clamping the pulse resistor 1 solely with the clamping plate 4 could lead to slippage along its axial direction. Therefore, a limiting protrusion 5 is also provided on the pulse resistor 1. The limiting protrusion 5 forms a physical barrier with the clamping plate 4. When the pulse resistor 1 is subjected to vibration and tends to displace axially, the limiting protrusion 5 is blocked by the clamping plate 4. Figure 2 As shown, this prevents the resistor from coming out of the opening side of the clamping plate 4 and ensures that the fixed position is always stable; secondly, the limiting protrusion 5 can be used as an installation reference to quickly determine the axial position of the resistor 1 in the housing and avoid misalignment during installation.

[0034] like Figure 1-2 As shown, the side wall of the opening side of the clamping plate 4 is provided with raised friction texture 6. The direction of the friction texture 6 is parallel to the axial direction of the pulse resistor 1. The friction texture 6 hinders the pulse resistor 1 from moving in the vertical direction.

[0035] The pulse resistor 1 may vibrate excessively in the vertical direction (i.e., perpendicular to the axis) and detach from its mounting point. Therefore, friction grooves 6 are provided to enhance friction and constrain the pulse resistor 1. The friction grooves 6 increase the friction between the clamping plate 4 and the surface of the pulse resistor 1. When the pulse resistor 1 tends to move in the vertical direction, the engagement of the friction grooves 6 with the surface of the resistor 1 can effectively prevent its vibration, thus forming a vertical limit.

[0036] like Figure 2-3 As shown, multiple sets of fixing seats are provided in the groove cavity of the mounting housing 2, and multiple pulse resistors 1 can be fixedly installed in the mounting housing 2 by means of the multiple sets of fixing seats.

[0037] Currently, the pulse resistor 1 used in batteries in the new energy field typically requires an allowable impulse energy of 400J. However, a single pulse resistor 1 cannot meet this requirement. Therefore, multiple pulse resistors 1 need to be connected in series or parallel to achieve the 400J allowable impulse energy. Taking a pulse resistor 1 with a single resistance energy of 200J as an example, two pulse resistors 1 need to be installed in the mounting housing 2. Therefore, the cavity of the mounting housing 2 is provided with multiple sets of mounting brackets for installing multiple pulse resistors 1.

[0038] like Figure 5-6 As shown, the mounting housing 2 is also provided with a cover plate 7. The cover plate 7 is located on the opening side of the mounting housing 2 and is detachably connected to the mounting housing 2. The cover plate 7 is provided with a plurality of through holes for the pins 12 of the pulse resistor 1 to pass through.

[0039] Firstly, cover plate 7 can close the opening of housing 2, such as Figure 6 As shown, this allows the cavity of the mounting housing 2 to form a sealed protective cavity to prevent dust, avoid the influence of the external environment on the performance of the pulse resistor 1, and extend its service life, which is especially suitable for the complex working environment of automotive batteries; secondly, the removable cover 7 allows the pulse resistor 1 to be inspected or replaced without disassembling the entire mounting housing 2, which facilitates maintenance.

[0040] like Figure 1 and Figure 5 As shown, the top of the mounting housing 2 is provided with an upwardly protruding mounting part, and the two sides of the mounting part are provided with male buckles 8 protruding in the horizontal direction. The two sides of the cover plate 7 are provided with mounting grooves that mate with the mounting part. The inner wall of the mounting groove is provided with female buckles 9 that mate with the male buckles 8. The cover plate 7 forms a detachable snap-fit ​​engagement with the mounting housing 2 by means of the male buckles 8 and female buckles 9.

[0041] Traditional bolted connections for the cover plate 7 are inefficient to install and remove, and the bolts are prone to loosening under vibration. Therefore, this utility model adopts a snap-fit ​​connection method. Utilizing the plasticity of the ABS plastic material of the mounting housing 2, when the cover plate 7 is pressed, the male snap 8 undergoes slight elastic deformation under the pressure. After the male snap 8 is fully engaged with the female snap 9, it returns to its original shape and forms a concave-convex fit. The installation and removal of the cover plate 7 can be completed without the need for screwdrivers or other tools. In addition, when vibration occurs, the gap between the male snap 8 and the female snap 9 will be automatically filled due to the slight deformation of the material, avoiding the problem of the cover plate 7 and the mounting housing 2 becoming loose due to vibration. Compared with bolted connections, this method is more suitable for the vibration scenarios of car batteries.

[0042] like Figure 1 and Figure 4 As shown, the bottom of the mounting housing 2 is provided with a skirt 10, and the skirt 10 is provided with mounting holes 11 for bolts to pass through. The mounting housing 2 is connected to the base 3 by means of bolts to form a detachable bolted connection.

[0043] The skirt 10 not only provides fixing points for bolts, but also increases the contact area between the bottom of the mounting housing 2 and the base 3.

Claims

1. A securely mountable pulse resistor, comprising a cylindrical pulse resistor (1), characterized in that, A grooved mounting housing (2) is also provided. The groove of the mounting housing (2) is provided with mounting points for fixing the pulse resistor (1). The pulse resistor (1) is connected to the base (3) by means of the mounting housing (2). A fixing seat is provided in the groove of the mounting housing (2). The fixing seat includes multiple C-shaped clamps (4). The closed side of the clamps (4) is fixedly connected to the bottom of the groove of the mounting housing (2). The open side of the clamps (4) forms the mounting points of the mounting housing (2) and engages with the pulse resistor (1).

2. A pulse resistor that can be securely installed according to claim 1, characterized in that, The pulse resistor (1) has ring-shaped limiting protrusions (5) at both ends. The first-stage clamping plate (4) and the last-stage clamping plate (4) of the fixing base respectively clamp the pulse resistor (1) and abut against the limiting protrusions (5) at both ends of the pulse resistor (1). The limiting protrusions (5) prevent the pulse resistor (1) from moving in the horizontal direction.

3. A pulse resistor that can be securely installed according to claim 1, characterized in that, The sidewall of the clamp (4) with the opening side is provided with raised friction texture (6). The direction of the friction texture (6) is parallel to the axial direction of the pulse resistor (1). The friction texture (6) hinders the pulse resistor (1) from moving in the vertical direction.

4. A pulse resistor that can be securely installed according to claim 1, characterized in that, Multiple sets of fixing seats are provided in the cavity of the mounting housing (2), and multiple pulse resistors (1) can be fixedly installed in the mounting housing (2) by means of the multiple sets of fixing seats.

5. A pulse resistor that can be securely installed according to claim 1, characterized in that, The mounting housing (2) is also provided with a cover plate (7), which is located on the opening side of the mounting housing (2) and forms a detachable connection with the mounting housing (2). The cover plate (7) is provided with multiple through holes through which the pins (12) of the pulse resistor (1) pass.

6. A securely mountable pulse resistor according to claim 5, characterized in that, The top of the mounting housing (2) is provided with an upwardly protruding mounting part, and the two sides of the mounting part are provided with male buckles (8) protruding in the horizontal direction. The two sides of the cover plate (7) are provided with mounting grooves that mate with the mounting part. The inner wall of the mounting groove is provided with female buckles (9) that mate with the male buckles (8). The cover plate (7) forms a detachable snap-fit ​​engagement with the mounting housing (2) by means of the male buckles (8) and female buckles (9).

7. A securely mountable pulse resistor according to claim 1, characterized in that, The bottom of the mounting housing (2) is provided with a skirt (10), and the skirt (10) is provided with mounting holes (11) for bolts to pass through. The mounting housing (2) is connected to the base (3) by means of bolts to form a detachable bolted connection.

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